CN107166062B - High pressure integrated form cylinder valve suitable for 70MPa operating pressure - Google Patents
High pressure integrated form cylinder valve suitable for 70MPa operating pressure Download PDFInfo
- Publication number
- CN107166062B CN107166062B CN201710344368.3A CN201710344368A CN107166062B CN 107166062 B CN107166062 B CN 107166062B CN 201710344368 A CN201710344368 A CN 201710344368A CN 107166062 B CN107166062 B CN 107166062B
- Authority
- CN
- China
- Prior art keywords
- valve
- storing cavity
- air inlet
- air
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001681 protective effect Effects 0.000 claims abstract description 20
- 238000011144 upstream manufacturing Methods 0.000 claims description 20
- 230000008676 import Effects 0.000 claims description 15
- 230000033228 biological regulation Effects 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000013589 supplement Substances 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 229910000743 fusible alloy Inorganic materials 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 83
- 238000009434 installation Methods 0.000 description 7
- 239000004113 Sepiolite Substances 0.000 description 6
- 229910052624 sepiolite Inorganic materials 0.000 description 6
- 235000019355 sepiolite Nutrition 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000006247 magnetic powder Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/105—Three-way check or safety valves with two or more closure members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
- F16K17/383—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the valve comprising fusible, softening or meltable elements, e.g. used as link, blocking element, seal, closure plug
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The present invention relates to field of mechanical technique.Suitable for the high pressure integrated form cylinder valve of 70MPa operating pressure, including a valve body, valve body is equipped with one for connecting gas cylinder connecting pin, the total air inlet of gas cylinder, is equipped with an airflow channel in valve body；When valve body is inflated, total air inlet is in the conductive state, along the direction of air-flow from total air inlet to gas cylinder connecting pin successively approach solenoid valve, a shut-off valve, an overcurrent protective valve, filter in airflow channel；When valve body is vented, total air inlet be in closed state, airflow channel it is interior along airflow direction from gas cylinder connecting pin successively approach filter, overcurrent protective valve, shut-off valve, solenoid valve, a pressure reducing valve.The present invention is suitable for 70MPa operating pressure by being integrated with pressure reducing valve, solenoid valve, shut-off valve, overcurrent protective valve, filter in cylinder valve.The present invention, to reach downstream air pressure force request, reduces downstream design difficulty first to depressurizing before this cylinder valve is discharged by being equipped with pressure reducing valve, convenient for high pressure gas.
Description
Technical field
The present invention relates to field of mechanical technique more particularly to cylinder valves.
Background technique
Currently, hydrogen fuel cell Industry Quick Development, for entire industrial chain still during maturation is improved, integrated cylinder valve is whole
One of critical product in a industrial chain.Market is very big to the demand of the product, and almost there are no the confessions of mature product
It answers.
The operating pressure of general cylinder valve is often 35MPa, when the operating pressure of cylinder valve is that cylinder valve works, inside cylinder valve
Air pressure.When the operating pressure of cylinder valve is chosen for 70MPa, the gas in cylinder valve is conveyed to downstream in use, needing under
Trip carries out special design (such as decompression), could use.Existing cylinder valve is given down for the gas directly by cylinder valve conveying
Trip uses, and the operating pressure of cylinder valve is no more than 35MPa, is not easy to guarantee the storage of cylinder valve multicapacity gas, conveying.
Summary of the invention
The object of the present invention is to provide be suitable for 70MPa operating pressure high pressure integrated form cylinder valve, with solve it is above-mentioned extremely
A few technical problem.
Technical problem solved by the invention can be realized using following technical scheme:
Suitable for the high pressure integrated form cylinder valve of 70MPa operating pressure, including a valve body, the valve body is equipped with one for connecting
Connect gas cylinder connecting pin, a total air inlet, the total gas outlet of gas cylinder, which is characterized in that an airflow channel is equipped in the valve body；
When the valve body is inflated, total air inlet is in the conductive state, and total gas outlet is in closed state, the air-flow
Along the direction of air-flow from total air inlet to successively approach solenoid valve, a shut-off valve, the overcurrent protection of gas cylinder connecting pin in channel
Valve, filter；
When the valve body is vented, total air inlet is in closed state, and total gas outlet is in the conductive state, the air-flow
In channel along airflow direction from gas cylinder connecting pin to total gas outlet successively filter, the overcurrent protective valve, institute described in approach
State shut-off valve, the solenoid valve, a pressure reducing valve.
The present invention is suitable for by being integrated with pressure reducing valve, solenoid valve, shut-off valve, overcurrent protective valve, filter in cylinder valve
70MPa operating pressure.The present invention is by being equipped with pressure reducing valve, convenient for high pressure gas first to depressurizing before this cylinder valve is discharged,
To reach downstream air pressure force request, downstream design difficulty is reduced.
The solenoid valve is equipped with first air inlet be connected with total air inlet, and the first storage is equipped in the solenoid valve
Air cavity；
When the solenoid valve is opened, first air inlet is connected with first air storing cavity,
When the solenoid closure, first air inlet is not turned on first air storing cavity.
The present invention is equipped with the first air storing cavity by solenoid valve, convenient for increasing gas-storing capacity in cylinder valve, accelerates transport gas velocity.
A pneumatic operated valve is additionally provided in the valve body, the pneumatic operated valve is equipped with second air inlet be connected with total air inlet
Mouthful, it is equipped with the second air storing cavity be connected with the import of the shut-off valve in the pneumatic operated valve, second air storing cavity and described the
The conducting of one air storing cavity, and first air storing cavity is connected through second air storing cavity with the import of the shut-off valve；
When the pneumatic operated valve is opened, second air inlet is connected with second air storing cavity；
When the pneumatic operated valve is closed, second air inlet is not turned on second air storing cavity.
The present invention passes through the combination of pneumatic operated valve and solenoid valve, improves air-flow stationarity when gas transmission, gas is through solenoid valve
After first air storing cavity is delivered to the second air storing cavity of pneumatic operated valve, it is delivered to shut-off valve.The present invention is by being equipped with first in solenoid valve
Air storing cavity, pneumatic operated valve is interior to be equipped with the second air storing cavity, convenient for increasing gas-storing capacity in cylinder valve, accelerates transport gas velocity.The present invention is logical
It crosses solenoid valve and then realizes the unlatching of pneumatic operated valve.
The solenoid valve includes an electromagnetism valve base, offers first air inlet on the electromagnetism valve base, described
Resisted when being equipped with a closure in solenoid valve the first air inlet valve core of the electromagnetic valve, one for give valve core of the electromagnetic valve resist first into
First spring of the spring force of port, first spring are located in first air storing cavity；
The pneumatic operated valve includes a pneumatic valve seat and pneumatic valve core, offers second air inlet on the pneumatic valve seat
Mouthful, the pneumatic valve core of the second air inlet is resisted when being equipped with a closure in the pneumatic operated valve, one is supported for giving pneumatic valve core
The firmly second spring of the spring force of the second air inlet, the second spring are located in second air storing cavity；
When inflation, total inlet charge, solenoid valve is in off-position, the blowing pressure be greater than the first spring resist first into
The power of port, and be greater than second spring and resist the power of the second air inlet, solenoid valve and pneumatic operated valve are in open state, gas into
Enter to pass sequentially through shut-off valve, overcurrent protective valve, filter, finally enters gas cylinder.
The present invention realizes inflation when power-off by optimizing the structure of solenoid valve.
Third air storing cavity is additionally provided in the pneumatic operated valve, the third air storing cavity and second air storing cavity are located at institute
The two sides in pneumatic operated valve valve core movement direction are stated, the third air storing cavity is not turned on second air storing cavity,
The third air storing cavity is connected with the import of shut-off valve；
When the pneumatic valve core of pneumatic operated valve resists the second air inlet, pneumatic operated valve closure, the second air storing cavity, third air storing cavity
It is not turned on the second air inlet,
When the pneumatic valve core of pneumatic operated valve does not resist the second air inlet, pneumatic operated valve is opened, the second air storing cavity, the third
Air storing cavity is connected with the second air inlet；
The upstream master that the import that one is used for shut-off valve is connected with third air storing cavity, the second air storing cavity is offered in the valve body
Channel, a downstream main channel is also provided in the valve body, and first air inlet and second air inlet pass through downstream master
Channel is connected with total air inlet and pressure reducing valve；
It is equipped with first throttle orifice plate in the pneumatic operated valve, the first throttle orifice plate is equipped with first segment discharge orifice, and described section
Only the import of valve is connected after upstream main channel, the first segment discharge orifice with second air storing cavity；
The electromagnetism valve base is equipped with the second restricting orifice, offers the second throttle orifice on second restricting orifice,
First air storing cavity is connected through second restricting orifice with the downstream main channel；
The aperture of second throttle orifice is greater than the aperture of first segment discharge orifice.
And then the deflation of cylinder valve may be implemented.
When deflation, solenoid valve is in energized state, and solenoid valve is opened, the second air storing cavity, upstream main channel and the first gas storage
By the second throttle orifice, downstream main channel is vented the gas of chamber.Gas in the main channel of upstream is stored up through first segment discharge orifice to second
Make-up gas in air cavity, because the second throttle diameter is bigger than first segment orifice aperture, for the second air storing cavity, upstream is main logical
Is discharged than downstream main channel to the gas supplement of the second air storing cavity by few pressure reduction in the second air storing cavity, the second storage for road
The active force that gas intracavity gas generates pneumatic valve core reduces, and third gas storage intracavity gas is to pneumatic valve core active force and the
Two gas storage intracavity gas are greater than the spring force of second spring to the difference of pneumatic valve core active force, to make pneumatic valve sealing surface
It is opened, air-flow is directly entered downstream main channel from upstream main channel, is finally discharged.
After solenoid valve power-off, electromagnetism valve sealing surface is closed, the second air storing cavity, upstream main channel and the first air storing cavity ring cavity chamber
This gas at 3 of room is no longer let out to downstream, and in a period of time, this gas pressure at 3 will be consistent with the gas pressure in gas cylinder.
It is once again powered up or powers off, the process of above-mentioned deflation will be repeated, be a cycle.
The valve body include a upper end cylindrical, one be in cuboid lower end；
The upper end is connected with the lower end, and the gas cylinder connecting pin is located at the top of the upper end；It is described total
Air inlet and total gas outlet are all located at the lower end.Upper end top is equipped with the channel of gas disengaging gas cylinder.
The filter, the overcurrent protective valve, the shut-off valve, the mistake are successively arranged in the valve body from top to bottom
Filter, the overcurrent protective valve, the shut-off valve three, which are fixedly connected, constitutes a regulation component, offers and is used on the valve body
The through-hole of the fixed regulation component, the centerline axis parallel of the central axis of the through-hole and the upper end；
The pressure reducing valve, the solenoid valve, pneumatic operated valve are equipped in the lower end.
The present invention is fixedly connected by the filter, the overcurrent protective valve, the shut-off valve three and constitutes a pressure regulation
Component is easy to implement the integration installation of three.
The lower end offers one and is used to install the solenoid valve mounting hole of solenoid valve, one for installing the pneumatic of pneumatic operated valve
Valve mounting hole, one are for installing the pressure reducing valve mounting hole of pressure reducing valve；
The central axis upright of the central axis of the solenoid valve mounting hole and the pneumatic operated valve mounting hole；
The centerline axis parallel of the central axis of the solenoid valve mounting hole and the pressure reducing valve mounting hole；
The central axis of the solenoid valve mounting hole, the central axis of the pressure reducing valve mounting hole, pneumatic operated valve installation
The central axis in hole is in the same plane.
The present invention by be equipped with solenoid valve mounting hole, pneumatic operated valve mounting hole, pressure reducing valve mounting hole, be easy to implement solenoid valve,
Pneumatic operated valve, the installation of pressure reducing valve, replacement, the present invention pass through the central axis of solenoid valve mounting hole, the center of pressure reducing valve mounting hole
Axis, the central axis of pneumatic operated valve mounting hole are in the same plane, are easy to implement the integrally-built miniaturization of device, control volume
Product.
One is offered on the valve body for installing the pressure sensor mounting hole of pressure sensor, the pressure sensor
The centerline axis parallel of the central axis of mounting hole and the pneumatic operated valve mounting hole；
And the central axis of the pressure sensor mounting hole, the central axis of the pneumatic operated valve mounting hole, the electromagnetism
The central axis three of valve mounting hole is in the same plane, with the plane for the first plane；
Central axis of first plane perpendicular to the through-hole.
The present invention by solenoid valve, pneumatic operated valve, pressure sensor three installation position, it is empty convenient for reducing whole occupancy
Between, the miniaturization of realization device.
One is offered on the valve body for temperature sensor mounted channel, the central axis in the channel and the through-hole
Line is parallel to each other, and the centerline axis parallel in the channel is in the central axis of the upper end；
The induction end of the temperature sensor externally protrudes out in the upper end.
Convenient for passing through monitors temperature.
The outer wall of the upper end is equipped with the external screw thread for being threadedly coupled gas cylinder.It is easy to implement detachable with gas cylinder
Connection.
One is additionally provided in the valve body for installing the air releasing device mounting hole of air releasing device, the air releasing device includes one
For accommodating fusing point in the channel of 105 DEG C~115 DEG C of fusible alloy, the one end in the channel is connected with the airflow channel,
The other end in the channel is connected with the outer wall of the valve body.
The present invention by be equipped with air releasing device, convenient for when temperature more than meltable gold fusing point after, internal meltable Jin Huirong
Melt outflow, realizes airflow channel and extraneous conducting, and then release to the high pressure hydrogen in cylinder valve, guarantee safety.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention；
Fig. 2 is that the present invention and gas cylinder are in a kind of schematic illustration under connection status；
Fig. 3 is the cross-sectional view that the present invention is equipped at pneumatic operated valve and pressure reducing valve；
Fig. 4 is the cross-sectional view that the present invention is equipped at regulation component；
Fig. 5 is a kind of cross-sectional view of filter of the present invention under exhaust condition.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating that the present invention is further explained.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, suitable for the high pressure integrated form cylinder valve of 70MPa operating pressure, including a valve
Body, valve body are equipped with one for connecting gas cylinder connecting pin, the total air inlet 6, a total 20 (total gas outlet 20 of gas outlet of gas cylinder 13
It is exactly the end of pressure reducing valve 4), valve body is interior to be equipped with an airflow channel；When valve body is inflated, total air inlet 6 is in the conductive state, always goes out
Port 20 is in closed state, along the direction of air-flow from total air inlet to gas cylinder connecting pin successively approach electromagnetism in airflow channel
Valve 5, a shut-off valve 1, an overcurrent protective valve 2, filter 3；When valve body is vented, total air inlet is in closed state, total gas outlet
It is in the conductive state, along airflow direction from successively approach filter, overcurrent protective valve, the cut-off of gas cylinder connecting pin in airflow channel
Valve, solenoid valve 5, a pressure reducing valve 4.The present invention in cylinder valve by being integrated with pressure reducing valve 4, solenoid valve 5, shut-off valve, overcurrent protection
Valve, filter are suitable for 70MPa operating pressure.This cylinder valve is being discharged by being equipped with pressure reducing valve 4, convenient for high pressure gas in the present invention
, to reach downstream air pressure force request, downstream design difficulty first is reduced to depressurizing before.
Solenoid valve 5 is equipped with first air inlet be connected with total air inlet, is equipped with the first air storing cavity in solenoid valve 5；Electromagnetism
When valve 5 is opened, the first air inlet is connected with the first air storing cavity, and when solenoid valve 5 is closed, the first air inlet is not led with the first air storing cavity
It is logical.The present invention is equipped with the first air storing cavity by solenoid valve 5, convenient for increasing gas-storing capacity in cylinder valve, accelerates transport gas velocity.
A pneumatic operated valve 8 is additionally provided in valve body, pneumatic operated valve 8 is equipped with second air inlet 9 be connected with total air inlet, pneumatic operated valve
The second air storing cavity that the import 11 with shut-off valve is connected is equipped in 8, the second air storing cavity is connected with the first air storing cavity, and the first gas storage
Chamber is connected through the import 11 of the second air storing cavity and shut-off valve；When pneumatic operated valve 8 is opened, the second air inlet 9 is connected with the second air storing cavity；
When pneumatic operated valve 8 is closed, the second air inlet 9 is not turned on the second air storing cavity.The present invention passes through the combination of pneumatic operated valve 8 and solenoid valve 5,
Air-flow stationarity when gas transmission is improved, gas can be delivered to the second air storing cavity of pneumatic operated valve 8 through 5 first air storing cavity of solenoid valve
Afterwards, it is delivered to shut-off valve.The present invention is equipped with the second air storing cavity in pneumatic operated valve, is convenient for by being equipped with the first air storing cavity in solenoid valve 5
Increase gas-storing capacity in cylinder valve, accelerates transport gas velocity.
Solenoid valve 5 includes an electromagnetism valve base, and the first air inlet is offered on electromagnetism valve base, is equipped with one in solenoid valve 5
Valve core of the electromagnetic valve, the spring force for resisting first air inlet for giving valve core of the electromagnetic valve of the first air inlet are resisted when closure
First spring, the first spring are located in the first air storing cavity 15；Pneumatic operated valve 8 includes a pneumatic valve seat and pneumatic valve core 10, pneumatically
Offer the second air inlet 9 on valve seat, resisted when being equipped with a closure in pneumatic valve seat the second air inlet 9 pneumatic valve core, one
The second spring for resisting the spring force of the second air inlet 9 for giving pneumatic valve core, second spring are located at the second air storing cavity 14
It is interior；When inflation, total inlet charge, solenoid valve 5 is in off-position, and the blowing pressure is greater than the first spring and resists the first air inlet
Power, and be greater than second spring and resist the power of the second air inlet 9, solenoid valve 5 and pneumatic operated valve 8 are in open state, gas into
Enter to pass sequentially through shut-off valve 1, overcurrent protective valve 2, filter 3, finally enters gas cylinder.The knot that the present invention passes through optimization solenoid valve 5
Structure, and then realize inflation when power-off.
Third air storing cavity is additionally provided in pneumatic operated valve 8, third air storing cavity and the second air storing cavity 14 are located at pneumatic valve core
The two sides of the direction of motion；When the pneumatic valve core 10 of pneumatic operated valve 8 resists the second air inlet, pneumatic operated valve 8 is closed, third air storing cavity
It is not turned on the second air inlet, when the pneumatic valve core of pneumatic operated valve 8 does not resist the second air inlet, pneumatic operated valve 8 is opened, third storage
Air cavity is connected with the second air inlet.The upstream of an import 11 for shut-off valve and the conducting of the second air storing cavity 14 is offered in valve body
Main channel, be also provided in valve body a downstream main channel, the first air inlet and the second air inlet by downstream main channel with always into
Port and pressure reducing valve 4 are connected.First throttle orifice plate is equipped in pneumatic operated valve 8, the first throttle orifice plate is equipped with first segment discharge orifice,
The import 11 of shut-off valve is connected after upstream main channel, first segment discharge orifice with the second air storing cavity 14；Electromagnetism valve base is equipped with the
Two restricting orifices offer the second throttle orifice on second restricting orifice, and the first air storing cavity is through the second restricting orifice and downstream
Main channel conducting；The aperture of second throttle orifice is greater than the aperture of first segment discharge orifice.And then the deflation of cylinder valve may be implemented.It deflates
When, solenoid valve 5 is in energized state, and solenoid valve 5 is opened, and the gas of the second air storing cavity, upstream main channel and the first air storing cavity is logical
Crossing the second throttle orifice, downstream main channel is vented.Gas in the main channel of upstream is supplemented through first segment discharge orifice into the second air storing cavity
Gas, because the second throttle diameter is bigger than first segment orifice aperture, for the second air storing cavity, upstream main channel is stored up to second
The gas supplement of air cavity discharges few pressure reduction in the second air storing cavity, the second gas storage intracavity gas than downstream main channel
The active force that pneumatic valve core generates is reduced, third gas storage intracavity gas is to pneumatic valve core active force and the second air storing cavity 14
Interior gas is greater than the spring force of second spring to the difference of pneumatic valve core active force, so that 8 sealing surface of pneumatic operated valve is made to be opened,
Air-flow is directly entered downstream main channel from upstream main channel, is finally discharged.
Solenoid valve is equipped with an electromagnetism valve air gate, and the first air storing cavity is connected with electromagnetism valve air gate.There are two pneumatic operated valve is set
Gas outlet, respectively the first gas outlet, the second gas outlet, the first gas outlet are connected with the second air storing cavity.Pneumatic valve core resists
When the second air inlet, the second air inlet is not turned on the second gas outlet, when pneumatic valve core does not resist the second air inlet, second into
Port, third air storing cavity, the conducting of the second gas outlet.
After solenoid valve 5 powers off, 5 sealing surface of solenoid valve is closed, the second air storing cavity, upstream main channel and the first air storing cavity ring cavity
This gas at 3 of chamber is no longer let out to downstream, in a period of time, this gas pressure at 3 by with the gas pressure one in gas cylinder
It causes.It is once again powered up or powers off, the process of above-mentioned deflation will be repeated, be a cycle.
Valve body include a upper end cylindrical, one be in cuboid lower end；Upper end is connected with lower end, always
Air inlet is located at the top of upper end；Total air inlet is located at the top of the upper end；Total air inlet, total gas outlet Dou Chu
In lower end.Filter, overcurrent protective valve, shut-off valve 1 are successively arranged in valve body from top to bottom, filter, is cut overcurrent protective valve
Only 1 three of valve, which is fixedly connected, constitutes a regulation component, and the through-hole for fixing regulation component, the center of through-hole are offered on valve body
The centerline axis parallel of axis and upper end；Pressure reducing valve 4, solenoid valve 5, pneumatic operated valve 8 are equipped in lower end.The present invention passes through filtering
Device, overcurrent protective valve, 1 three of shut-off valve, which are fixedly connected, constitutes a regulation component, is easy to implement the integration installation of three.
Lower end offers one and is used to install the solenoid valve mounting hole of solenoid valve 5, one for installing the pneumatic operated valve of pneumatic operated valve 8
Mounting hole, one are for installing the pressure reducing valve mounting hole of pressure reducing valve 4；The central axis of solenoid valve mounting hole and pneumatic operated valve mounting hole
Central axis upright；The central axis of solenoid valve mounting hole and the centerline axis parallel of pressure reducing valve mounting hole；Solenoid valve mounting hole
Central axis, central axis, the central axis of pneumatic operated valve mounting hole of pressure reducing valve mounting hole it is in the same plane.The present invention
By being equipped with solenoid valve mounting hole, pneumatic operated valve mounting hole, pressure reducing valve mounting hole, it is easy to implement solenoid valve 5, pneumatic operated valve 8, pressure reducing valve
4 installation is replaced, and the present invention passes through the central axis of solenoid valve mounting hole, the central axis of pressure reducing valve mounting hole, pneumatic operated valve peace
The central axis for filling hole is in the same plane, is easy to implement the integrally-built miniaturization of device, controls volume.
One is offered on valve body for installing the pressure sensor mounting hole of pressure sensor 7, pressure sensor mounting hole
Central axis and 8 mounting hole of pneumatic operated valve centerline axis parallel；And central axis, the pneumatic operated valve of pressure sensor mounting hole
The central axis of mounting hole, the central axis three of solenoid valve mounting hole are in the same plane, with plane for the first plane；The
Central axis of one plane perpendicular to through-hole.The present invention by solenoid valve 5, pneumatic operated valve 8,7 three of pressure sensor installation side
Position, convenient for reducing whole occupied space, the miniaturization of realization device.
A channel for mounting temperature sensor 17 is offered on valve body, the central axis of channel and through-hole is mutually flat
Row, and the centerline axis parallel in channel is in the central axis of upper end；The induction end of temperature sensor externally protrudes out in upper end.It is convenient for
Pass through monitors temperature.
The outer wall of upper end is equipped with the external screw thread for being threadedly coupled gas cylinder.It is easy to implement and connects with the detachable of gas cylinder
It connects.
One is additionally provided in valve body for installing the air releasing device mounting hole of air releasing device 12, air releasing device 12 is used for including one
Fusing point is accommodated in the channel of 105 DEG C~115 DEG C of fusible alloy, the one end in channel is connected with airflow channel, the other end in channel
It is connected with the outer wall of valve body.The present invention is by being equipped with air releasing device, convenient for after temperature is more than the fusing point of meltable gold, internal is easy
Molten gold can melt outflow, realize airflow channel and extraneous conducting, and then release to the high pressure hydrogen in cylinder valve, guarantee peace
Entirely.
A filter core is equipped in filter, filter core includes the following raw material, active carbon 50%~60%, glass fibre
4%~8%, water-absorbing resin 5%~8%, magnetic powder 3%~7%, sepiolite 8%~15%, diatom ooze 5%~15%, sawdust ash
3%~5%.The present invention has additional sepiolite by optimization traditional filtering filter core, by inside, and sepiolite has micropore, can be real
The absorption of existing pernicious gas is easily filled into the micropore of sepiolite in addition, the present invention is grey by having additional diatom ooze and sawdust,
The clean-up effect that gas passes through sepiolite micropore is improved, in addition, the present invention realizes that the viscosity of particulate matter is inhaled by being equipped with diatom ooze
It is attached, improve the adsorption effect of magnetic powder.After water-absorbing resin realizes water imbibition, the overall viscosity of filter core, and then raising pair are improved
The sticky adsorption effect of impurity.Because the present invention is still able to achieve the effect of gas permeability by optimizing the content of each proportion.
As a kind of effective scheme, it is equipped with a filter core in filter, filter core includes the following raw material, active carbon
60%, glass fibre 5%, water-absorbing resin 5%, magnetic powder 7%, sepiolite 9%, diatom ooze 11%, sawdust ash 3%.The present invention is logical
The content for increasing active carbon is crossed, guarantees the overall air permeability of filter core, by diatom ooze as adhesive, realizes the viscous of raw material
Property it is fixed while, or realize and the viscosity of impurity adsorbed.
Referring to Fig. 5, set in filter there are two filter element, respectively the first filter element, the second filter element, second
Filter element is annular in shape, and the periphery of the first filter element is arranged in.First filter element include the first cylindrical case 31, first
Columned first filter core 36 is installed in cylindrical case 31, one is additionally provided in the first cylindrical case 31 and is equipped with air hole
First locating part 33, the first locating part 33 are fixedly connected with the first cylindrical case 31, and the lower section of the first locating part 33 is equipped with first
The top of filter core 36, the first locating part 33 is equipped with first baffle 34, and first baffle 34 and the first locating part 33 pass through third
Spring is connected, and has gap between first baffle 34 and the inner wall of the first cylindrical case 31；
Second filter element includes the second cylindrical case 32, and the second circular filtering is equipped in the second cylindrical case 32
Filter core 35 is additionally provided with a second circular locating part 38 for being equipped with air hole, the second locating part 38 in second cylindrical case 32
External annulus be fixedly connected with the second cylindrical case 32, the internal ring wall of the second locating part 38 and the first cylindrical case 31 are fixed to be connected
It connecing, the top of the second locating part 38 is equipped with the second filter core 35, and the lower section of the second locating part 38 is equipped with second baffle 37, and second
Baffle 37 is connected with the second locating part 38 by the 4th spring, is had between second baffle 37 and the inner wall of the second cylindrical case 32
Gap；
When inflation, the water conservancy diversion direction of filter is from bottom to up that second baffle 37 offsets with the second locating part 38, second gear
Plate 37 and the second locating part 38 surround the second accommodating chamber of compressed 4th spring of an accommodating, the first locating part 33 and first gear
Plate 34 is separate, and gas when the first 36 pairs of filter core is inflated is filtered；
When gas cylinder is vented, the water conservancy diversion direction of filter is from top to bottom that first baffle 34 offsets with the first locating part 33, the
One baffle 34 and the first locating part 33 surround the first accommodating chamber of the compressed third spring of an accommodating, the second locating part 38 and
Two baffles 37 are separate, and gas when the second 35 pairs of filter core is inflated is filtered.
The present invention realize single filter may be implemented it is bi-directional filtered, prevent for it is bi-directional filtered when, be adsorbed on filtering
The impurity of unit flows to other component by the filter element that blows off.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (8)
1. being suitable for the high pressure integrated form cylinder valve of 70MPa operating pressure, including a valve body, the valve body is equipped with one for connecting
The gas cylinder connecting pin of gas cylinder, a total air inlet, a total gas outlet, which is characterized in that an airflow channel is equipped in the valve body；
When the valve body is inflated, total air inlet is in the conductive state, and total gas outlet is in closed state, the airflow channel
The interior direction along air-flow is from total air inlet to gas cylinder connecting pin successively by way of solenoid valve, a shut-off valve, an overcurrent protective valve, mistake
Filter；
When the valve body is vented, total air inlet is in closed state, and total gas outlet is in the conductive state, the airflow channel
It is interior along airflow direction from gas cylinder connecting pin to total gas outlet successively filter, the overcurrent protective valve, described section described in approach
Only valve, the solenoid valve, a pressure reducing valve；
One is additionally provided in the valve body for installing the air releasing device mounting hole of air releasing device, the air releasing device is used for including one
Fusing point is accommodated in the channel of 105 DEG C~115 DEG C of fusible alloy, the one end in the channel is connected with the airflow channel, described
The other end in channel is connected with the outer wall of the valve body；
The solenoid valve is equipped with first air inlet be connected with total air inlet, is equipped with the first gas storage in the solenoid valve
Chamber, first air storing cavity are connected with the import of the shut-off valve；
When the solenoid valve is opened, first air inlet is connected with first air storing cavity,
When the solenoid closure, first air inlet is not turned on first air storing cavity；
A pneumatic operated valve is additionally provided in the valve body, the pneumatic operated valve is equipped with second air inlet be connected with total air inlet,
The second air storing cavity be connected with the import of the shut-off valve, second air storing cavity and first storage are equipped in the pneumatic operated valve
Air cavity conducting, and first air storing cavity is connected through second air storing cavity with the import of the shut-off valve；
When the pneumatic operated valve is opened, second air inlet is connected with second air storing cavity；
When the pneumatic operated valve is closed, second air inlet is not turned on second air storing cavity.
2. the high pressure integrated form cylinder valve according to claim 1 suitable for 70MPa operating pressure, which is characterized in that described
Solenoid valve includes an electromagnetism valve base, offers first air inlet on the electromagnetism valve base, is equipped in the solenoid valve
One resists the valve core of the electromagnetic valve of the first air inlet, one for giving the spring force that valve core of the electromagnetic valve resists the first air inlet when being closed
The first spring, first spring is located in first air storing cavity；
The pneumatic operated valve includes a pneumatic valve seat and pneumatic valve core, offers second air inlet on the pneumatic valve seat,
The pneumatic valve core of the second air inlet is resisted when being equipped with a closure in the pneumatic valve seat, one is resisted for giving pneumatic valve core
The second spring of the spring force of second air inlet, the second spring are located in second air storing cavity；
When inflation, total inlet charge, solenoid valve is in off-position, and the blowing pressure is greater than the first spring and resists the first air inlet
Power, and be greater than second spring and resist the power of the second air inlet, solenoid valve and pneumatic operated valve are in open state, gas enter according to
It is secondary by shut-off valve, overcurrent protective valve, filter, finally enter gas cylinder.
3. the high pressure integrated form cylinder valve according to claim 1 suitable for 70MPa operating pressure, which is characterized in that described
Third air storing cavity is additionally provided in pneumatic operated valve, the third air storing cavity and second air storing cavity are located at the pneumatic valve core
The two sides of the direction of motion, the third air storing cavity are not turned on second air storing cavity,
The third air storing cavity is connected with the import of shut-off valve；
When the pneumatic valve core of pneumatic operated valve resists the second air inlet, pneumatic operated valve closure, the second air storing cavity, third air storing cavity and the
Two air inlets are not turned on,
When the pneumatic valve core of pneumatic operated valve does not resist the second air inlet, pneumatic operated valve is opened, the second air storing cavity, the third gas storage
Chamber is connected with the second air inlet；
It is main logical that the upstream that the import that one is used for shut-off valve is connected with third air storing cavity, the second air storing cavity is offered in the valve body
It is main logical by downstream to be also provided with a downstream main channel, first air inlet and second air inlet in the valve body for road
Road is connected with total air inlet and pressure reducing valve；
First throttle orifice plate is equipped in the pneumatic operated valve, the first throttle orifice plate is equipped with first segment discharge orifice, the shut-off valve
Import be connected after upstream main channel, the first segment discharge orifice with second air storing cavity；
The electromagnetism valve base is equipped with the second restricting orifice, offers the second throttle orifice on second restricting orifice, described
First air storing cavity is connected through second restricting orifice with the downstream main channel；
The aperture of second throttle orifice is greater than the aperture of first segment discharge orifice.
4. the high pressure integrated form cylinder valve according to claim 3 suitable for 70MPa operating pressure, which is characterized in that deflate
When, solenoid valve is in energized state, and solenoid valve is opened, and the gas of the second air storing cavity, upstream main channel and the first air storing cavity passes through
Downstream main channel is vented second throttle orifice；Gas in the main channel of upstream supplements gas into the second air storing cavity through first segment discharge orifice
Body, because the second throttle diameter is bigger than first segment orifice aperture, for the second air storing cavity, upstream main channel is to the second gas storage
The gas supplement of chamber discharges few pressure reduction in the second air storing cavity, the second gas storage intracavity gas pair than downstream main channel
The active force that pneumatic valve core generates reduces, and third gas storage intracavity gas is to gas in pneumatic valve core active force and the second air storing cavity
Body is greater than the spring force of second spring to the difference of pneumatic valve core active force, so that pneumatic valve sealing surface is made to be opened, air-flow
It is directly entered downstream main channel from upstream main channel, is finally discharged.
5. the high pressure integrated form cylinder valve as claimed in any of claims 1 to 4 suitable for 70MPa operating pressure,
Be characterized in that, the valve body include a upper end cylindrical, one be in cuboid lower end；
The upper end is connected with the lower end, and the gas cylinder connecting pin is located at the top of the upper end；Total air inlet
Mouth is all located at the lower end with total gas outlet；
The filter, the overcurrent protective valve, the shut-off valve, the filtering are successively arranged in the valve body from top to bottom
Device, the overcurrent protective valve, the shut-off valve three, which are fixedly connected, constitutes a regulation component, is offered on the valve body for solid
The through-hole of the fixed regulation component, the centerline axis parallel of the central axis of the through-hole and the upper end；
The pressure reducing valve, the solenoid valve, pneumatic operated valve are equipped in the lower end.
6. the high pressure integrated form cylinder valve according to claim 5 suitable for 70MPa operating pressure, which is characterized in that described
Lower end offer one for install solenoid valve solenoid valve mounting hole, one for install pneumatic operated valve pneumatic operated valve mounting hole, one
For installing the pressure reducing valve mounting hole of pressure reducing valve；
The central axis upright of the central axis of the solenoid valve mounting hole and the pneumatic operated valve mounting hole；
The centerline axis parallel of the central axis of the solenoid valve mounting hole and the pressure reducing valve mounting hole；
The central axis of the solenoid valve mounting hole, the central axis of the pressure reducing valve mounting hole, the pneumatic operated valve mounting hole
Central axis is in the same plane.
7. the high pressure integrated form cylinder valve according to claim 6 suitable for 70MPa operating pressure, which is characterized in that described
One is offered on valve body for installing the pressure sensor mounting hole of pressure sensor, the center of the pressure sensor mounting hole
The centerline axis parallel of axis and the pneumatic operated valve mounting hole；
And the central axis of the pressure sensor mounting hole, the central axis of the pneumatic operated valve mounting hole, the solenoid valve are pacified
The central axis three for filling hole is in the same plane, with the plane for the first plane；
Central axis of first plane perpendicular to the through-hole.
8. the high pressure integrated form cylinder valve according to claim 7 suitable for 70MPa operating pressure, which is characterized in that described
One is offered on valve body for temperature sensor mounted channel, the channel and the central axis of the through-hole are parallel to each other,
And the centerline axis parallel in the channel is in the central axis of the upper end；
The induction end of the temperature sensor externally protrudes out in the upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710344368.3A CN107166062B (en) | 2017-05-16 | 2017-05-16 | High pressure integrated form cylinder valve suitable for 70MPa operating pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710344368.3A CN107166062B (en) | 2017-05-16 | 2017-05-16 | High pressure integrated form cylinder valve suitable for 70MPa operating pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107166062A CN107166062A (en) | 2017-09-15 |
| CN107166062B true CN107166062B (en) | 2019-07-26 |
Family
ID=59815112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710344368.3A Active CN107166062B (en) | 2017-05-16 | 2017-05-16 | High pressure integrated form cylinder valve suitable for 70MPa operating pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107166062B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278395A (en) * | 2018-04-13 | 2018-07-13 | 丹阳市飞轮气体阀门有限公司 | A kind of automobile-used hydrogen solenoid valve of overpressured zones decompression |
| CN109826981A (en) * | 2019-02-28 | 2019-05-31 | 上海华敬氢能科技有限公司 | A Highly Integrated High-Pressure Hydrogen Cylinder Valve |
| CN113048267A (en) * | 2021-03-05 | 2021-06-29 | 西安伯肯氢能科技有限公司 | Gas cylinder valve and gas cylinder group |
| CN114001177B (en) * | 2021-12-24 | 2022-04-01 | 新乡市新华液压机械有限公司 | Pneumatic control one-way damping valve |
| CN114877109B (en) * | 2022-05-17 | 2024-10-22 | 江苏国富氢能技术装备股份有限公司 | High-efficient step-down control device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200999917Y (en) * | 2007-01-29 | 2008-01-02 | 奇瑞汽车有限公司 | Liquefied petroleum gas container combined valve for cars |
| CN202812353U (en) * | 2012-09-13 | 2013-03-20 | 宁波三安制阀有限公司 | Natural gas cylinder valve for vehicle |
| CN202901814U (en) * | 2012-09-06 | 2013-04-24 | 东风汽车公司 | Rapid gas supplying device for natural gas vehicle |
| CN204567279U (en) * | 2015-05-12 | 2015-08-19 | 丹东黄海汽车有限责任公司 | Dual-purpose fuel lorry |
| CN206003892U (en) * | 2016-08-04 | 2017-03-08 | 上海瀚氢动力科技有限公司 | Hydrogen fuel cell combination valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU91384B1 (en) * | 2007-12-12 | 2009-06-15 | Luxembourg Patent Co | Arrangement of a filling and filtration device in a valve body |
| CN204114566U (en) * | 2014-09-26 | 2015-01-21 | 上海舜华新能源系统有限公司 | A kind of integrated cylinder valve for high-pressure gas cylinder |
-
2017
- 2017-05-16 CN CN201710344368.3A patent/CN107166062B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200999917Y (en) * | 2007-01-29 | 2008-01-02 | 奇瑞汽车有限公司 | Liquefied petroleum gas container combined valve for cars |
| CN202901814U (en) * | 2012-09-06 | 2013-04-24 | 东风汽车公司 | Rapid gas supplying device for natural gas vehicle |
| CN202812353U (en) * | 2012-09-13 | 2013-03-20 | 宁波三安制阀有限公司 | Natural gas cylinder valve for vehicle |
| CN204567279U (en) * | 2015-05-12 | 2015-08-19 | 丹东黄海汽车有限责任公司 | Dual-purpose fuel lorry |
| CN206003892U (en) * | 2016-08-04 | 2017-03-08 | 上海瀚氢动力科技有限公司 | Hydrogen fuel cell combination valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107166062A (en) | 2017-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107166062B (en) | High pressure integrated form cylinder valve suitable for 70MPa operating pressure | |
| CN107166164B (en) | Integrated cylinder valve equipped with air releasing device | |
| CN103267152A (en) | Combined cylinder valve | |
| CN108612904A (en) | Combined type air inlet and exhaust valve | |
| CN108662223A (en) | Big flow double-purpose pipeline gas self-closing valve | |
| CN201090810Y (en) | Piping gas ultra-underpressure, tube knockout self-closing stop valve | |
| CN217874381U (en) | Pipeline gas self-closing valve | |
| CN102380150B (en) | Pneumatic gas-controlled breathing machine | |
| CN206816915U (en) | Voltage stabilizing integrated form cylinder valve | |
| CN208634459U (en) | A kind of gas ratio valve | |
| CN208252908U (en) | A kind of pilot-operated type unloading overflow valve | |
| CN201511958U (en) | Air control valve | |
| CN205938148U (en) | Pipeline gas safety protection valve with operating condition instructs and stop device | |
| CN205371733U (en) | Integral ball valve gas self -closing valve | |
| CN206487923U (en) | Lever pressure difference safety regulating valve | |
| CN106764004A (en) | Lever pressure difference safety regulating valve | |
| CN207830584U (en) | A kind of high-purity high pressure oxygen cylinder valve | |
| CN207393980U (en) | A kind of liquefied gas cylinder safety valve | |
| CN202017805U (en) | Mechanical over-pressure/under-pressure protecting device for high pressure explosion-proof electromagnetic valve | |
| CN206385082U (en) | A kind of coke oven heating gas pipeline nitrogen pressure-retaining system | |
| CN205449249U (en) | Plastic refractory automatic measurement device | |
| CN205689852U (en) | A kind of relief valve | |
| CN2610187Y (en) | Gas meter with automatic close valve for overpressure or underpressure | |
| CN2438880Y (en) | Differential pressure selective valve | |
| CN102182848B (en) | Mechanical over-voltage/ low-voltage protective device for high-voltage anti-explosion electromagnetic valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 33 Kerong Road, Xiangzhou District, Zhuhai City, Guangdong Province 519075, China Patentee after: Hanhe Power (Zhuhai) Technology Co.,Ltd. Country or region after: China Address before: 201318 room 704, building 1, No. 1-9, Lane 99, Shenmei Road, Pudong New Area, Shanghai Patentee before: SHANGHAI HANQING POWER TECHNOLOGY CO.,LTD. Country or region before: China |