CN111057819A - Circulating cooling device, heat treatment kiln and cooling method thereof - Google Patents
Circulating cooling device, heat treatment kiln and cooling method thereof Download PDFInfo
- Publication number
- CN111057819A CN111057819A CN201911395554.5A CN201911395554A CN111057819A CN 111057819 A CN111057819 A CN 111057819A CN 201911395554 A CN201911395554 A CN 201911395554A CN 111057819 A CN111057819 A CN 111057819A
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- pipeline
- cooling
- preset value
- cooling device
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 130
- 238000010438 heat treatment Methods 0.000 title claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 69
- 239000000112 cooling gas Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000010992 reflux Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000006872 improvement Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
- C21D11/005—Process control or regulation for heat treatments for cooling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses a circulating cooling device, a heat treatment kiln and a cooling method thereof, wherein the circulating cooling device comprises a cooling heat exchange assembly, an inlet end of the cooling heat exchange assembly is connected with an air inlet pipeline for introducing gas to be cooled into the cooling heat exchange assembly, an outlet end of the cooling heat exchange assembly is connected with an air outlet pipeline for discharging the gas after the cooling heat exchange assembly is cooled, the circulating cooling device also comprises a return pipeline for communicating the air inlet pipeline and the air outlet pipeline, and the return pipeline is provided with a return control valve for controlling the on-off of the return pipeline. The heat treatment kiln comprises a furnace body with a hearth and the circulating cooling device. The cooling method is that in the working process of the circulating cooling device, the on-off of the backflow control valve is automatically controlled according to the inlet air temperature, the outlet air temperature and the hearth temperature so as to improve the temperature of the inlet air and the outlet air. The invention can output cooling gas with lower temperature under the condition that the heat exchange capability of the cooling heat exchange assembly is not changed, and has the advantages of simple and compact structure, low cost, easy improvement and long service life.
Description
Technical Field
The invention relates to the technical field of heat treatment equipment, in particular to a circulating cooling device, a heat treatment kiln with the circulating cooling device and a cooling method of the heat treatment kiln.
Background
In a heat treatment kiln such as a bell jar furnace, the gas discharged from the hearth is circularly cooled by adopting a cooling circulating system and then is sent into the hearth, so that the atmosphere in the hearth can be effectively ensured to meet the process requirement in the cooling process, and the bell jar furnace can also be ensured to accord with the requirements of low carbon and environmental protection.
The traditional cooling circulation system directly leads gas discharged from a hearth into a water-cooling heat exchanger, and the gas after water cooling is sent into the hearth, so that the purpose of recycling is achieved. The following problems exist in the using process:
(1) if the temperature of the gas from the hearth is too high, the temperature after heat dissipation by the heat exchanger is still very high, and the gas with higher temperature is sent into the hearth, so that the cooling rate of the hearth cannot reach the expected target.
(2) The highest temperature that the heat exchanger itself can bear is not high, if the gas temperature that the furnace came out is too high, seriously influences the heat exchanger life-span under the long-time service condition, may lead to the heat exchanger to damage even.
In order to solve the above problems, the heat exchange performance and the high temperature resistance performance of the heat exchanger are improved by replacing the type or specification of the heat exchanger, which requires a great increase in equipment cost.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a circulating cooling device which can output cooling gas with lower temperature under the condition that the heat exchange capacity of a cooling heat exchange assembly is not changed, has simple and compact structure, low cost, easy improvement and long service life, and also correspondingly provides a heat treatment kiln with the circulating cooling device and a cooling method of the heat treatment kiln.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a circulative cooling device, includes cooling heat exchange assembly, cooling heat exchange assembly's entrance point is connected with and is used for waiting that cooling gas lets in cooling heat exchange assembly's air inlet pipeline, cooling heat exchange assembly's exit end is connected with and is used for cooling gas outgoing's behind the heat exchange assembly cooling air outlet pipe way, still includes the intercommunication air inlet pipeline and the return line who gives vent to anger the pipeline, be equipped with the backflow control valve who is used for controlling the return line break-make on the return line.
In the above circulating cooling device, preferably, the cooling heat exchange assembly includes a heat exchange pipeline, the heat exchange pipeline is provided with a heat exchanger and a circulating fan in series, the inlet end of the heat exchange pipeline is connected with the air inlet pipeline, and the outlet end of the heat exchange pipeline is connected with the air outlet pipeline.
In the above-mentioned circulation cooling device, preferably, the heat exchanger and the circulation fan are sequentially arranged in the heat exchange pipeline along a direction from the inlet end to the outlet end of the heat exchange pipeline.
In the above circulating cooling device, preferably, a first sensor for detecting the gas temperature and alarming when the gas temperature exceeds a first threshold value is arranged at the inlet of the heat exchanger.
In the above circulating cooling device, preferably, a second sensor for detecting the gas temperature and alarming when the gas temperature exceeds a second threshold value is arranged at the outlet of the heat exchanger.
In the above circulating cooling device, preferably, the heat exchanger is a water-cooled heat exchanger.
In the above circulating cooling device, preferably, the air inlet pipeline, the air outlet pipeline or the heat exchange pipeline is provided with a circulating control valve for controlling the on-off of the heat exchange pipeline.
A heat treatment kiln comprises a furnace body with a hearth and the circulating cooling device, wherein an air inlet pipeline and an air outlet pipeline of the circulating cooling device are communicated with the hearth.
The cooling method of the heat treatment kiln comprises the following steps:
(S1) closing the reflux control valve and the circulation control valve, and starting the circulating fan to enable the circulating cooling device to start working;
(S2) acquiring the gas temperature at the inlet end of the cooling heat exchange assembly, the gas temperature at the outlet end of the cooling heat exchange assembly and the gas temperature in the hearth in real time by adopting a sensor to obtain that the gas temperature at the inlet end of the cooling heat exchange assembly is T1, the gas temperature at the outlet end of the cooling heat exchange assembly is T2 and the gas temperature in the hearth is T3;
(S3) the computer is adopted to receive the T1, the T2 and the T3 collected by the sensors, compare the T1 with a first preset value, compare the T2 with a second preset value and compare the T3 with a third preset value, and when at least one of the three comparison results of the T1 being greater than the first preset value, the T2 being greater than the second preset value and the T3 being greater than the third preset value is met, the computer controls the pre-configured automatic execution mechanism to automatically open the backflow control valve and the circulation control valve.
In the above cooling method, preferably, in the step (S3), after the circulation fan (7) is started to reach the preset time, if at least one of the three comparison results of T1 > a third preset value, T2 > a fourth preset value and T3 > a sixth preset value is met, the computer controls the circulation fan (7) to increase the rotation speed; wherein, the third preset value is larger than the first preset value, the fourth preset value is larger than the second preset value, and the sixth preset value is larger than the third preset value.
Compared with the prior art, the invention has the advantages that:
the circulating cooling device comprises a circulating cooling assembly, a circulating cooling assembly and a circulating cooling device, wherein the circulating cooling assembly is arranged in the circulating cooling assembly, a gas inlet pipeline and a gas outlet pipeline are arranged on the circulating cooling assembly, the circulating cooling assembly is connected with the gas inlet pipeline and the gas outlet pipeline, and a backflow control valve is arranged on the backflow pipeline. The circulating cooling device only needs to be additionally provided with the return pipeline and the return control valve on the basis of the existing circulating cooling device, does not need to be replaced by a cooling heat exchange assembly with better heat exchange performance and high temperature resistance, and has the advantages of simple and compact structure, low cost and easy improvement.
Drawings
FIG. 1 is a schematic view of the structure of a circulation cooling device.
FIG. 2 is a schematic view of the structure of a heat treatment furnace.
Illustration of the drawings:
1. an air intake line; 2. an air outlet pipeline; 3. a return line; 4. a reflux control valve; 5. a heat exchange line; 6. a heat exchanger; 7. a circulating fan; 8. a circulation control valve; 9. a furnace body.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
Example 1:
as shown in fig. 1, the cooling cycle device of this embodiment includes a cooling heat exchange assembly, an inlet end of the cooling heat exchange assembly is connected with an air inlet pipeline 1 for introducing a gas to be cooled into the cooling heat exchange assembly, an outlet end of the cooling heat exchange assembly is connected with an air outlet pipeline 2 for discharging the gas cooled by the cooling heat exchange assembly, the cooling cycle device further includes a return pipeline 3 for communicating the air inlet pipeline 1 and the air outlet pipeline 2, and a return control valve 4 for controlling the on-off of the return pipeline 3 is arranged on the return pipeline 3. This circulative cooling device cools off heat exchange assembly's air inlet pipeline 1 and goes out and be connected with return line 3 between gas pipeline 2, set up backward flow control valve 4 on return line 3 simultaneously, treat when the cooling gas temperature that lets in air inlet pipeline 1 is too high, accessible backward flow control valve 4 controls return line 3 intercommunication, make the gas after being cooled off heat exchange assembly let in air inlet pipeline 1, mix with the gas of treating in the air inlet pipeline 1, thereby reduce the gas temperature that gets into cooling heat exchange assembly, and further reduce the gas temperature of exporting from gas pipeline 2 output, can avoid gas temperature to exceed cooling heat exchange assembly's the scope of bearing and influence cooling heat exchange assembly's life-span, and make cooling heat exchange assembly can export the cooling gas that the temperature is lower under the unchangeable condition of heat transfer capacity, satisfy the cooling requirement. The circulating cooling device only needs to be additionally provided with the return pipeline 3 and the return control valve 4 on the basis of the existing circulating cooling device, does not need to be replaced by a cooling heat exchange assembly with better heat exchange performance and high temperature resistance, and has the advantages of simple and compact structure, low cost and easy improvement.
In this embodiment, the cooling heat exchange assembly includes heat exchange pipeline 5, and heat exchanger 6 and circulating fan 7 are installed with the series connection on the heat exchange pipeline 5, and the inlet end of heat exchange pipeline 5 links to each other with air inlet pipeline 1, and the exit end of heat exchange pipeline 5 links to each other with air outlet pipeline 2. Preferably, the heat exchanger 6 and the circulating fan 7 are sequentially arranged in the heat exchange pipeline 5 along the direction from the inlet end to the outlet end of the heat exchange pipeline 5, that is, the inlet of the heat exchanger 6 is connected with the air inlet pipeline 1, the outlet of the heat exchanger 6 is connected with the inlet of the circulating fan 7, and the outlet of the circulating fan 7 is connected with the air outlet pipeline 2. Therefore, high-temperature gas is cooled by the heat exchanger 6 and then enters the circulating fan 7, and the influence of the high-temperature gas on the circulating fan 7 can be avoided.
In this embodiment, the inlet of the heat exchanger 6 is provided with a first sensor for detecting the gas temperature and alarming when the gas temperature exceeds a first threshold value, so that the whole circulating cooling device can be monitored conveniently according to the gas temperature at the inlet of the heat exchanger 6.
In this embodiment, the outlet of heat exchanger 6 is equipped with the second sensor that detects gas temperature and report to the police when gas temperature surpasses the second threshold value, is convenient for monitor whole circulative cooling device according to the outlet gas temperature of heat exchanger 6.
In this embodiment, the heat exchanger 6 is a water-cooled heat exchanger.
In this embodiment, the air inlet pipeline 1, the air outlet pipeline 2 or the heat exchange pipeline 5 is provided with a circulation control valve 8 for controlling the on-off of the heat exchange pipeline 5, so as to control the start and stop of the whole circulation cooling device.
Example 2:
as shown in fig. 2, a heat treatment kiln comprises a furnace body 9 with a hearth and a circulating cooling device of the embodiment 1, wherein an air inlet pipeline 1 and an air outlet pipeline 2 of the circulating cooling device are both communicated with the hearth. This heat treatment kiln is owing to adopted the circulative cooling device of this embodiment, and when gaseous high temperature was too high in furnace, 3 intercommunications of accessible backward flow control valve 4 control return line avoided gaseous temperature to exceed cooling heat exchange assembly's the scope of bearing and influence cooling heat exchange assembly's life-span to make cooling heat exchange assembly can export the lower cooling gas of temperature under the unchangeable circumstances of heat transfer capacity, satisfy the refrigerated requirement to furnace, improve furnace cooling rate.
Example 3:
a cooling method of a heat treatment kiln according to embodiment 2, comprising the steps of:
(S1) closing the reflux control valve 4 and the circulation control valve 8, starting the circulating fan 7 to enable the circulating cooling device to start working, enabling the high-temperature gas in the hearth to enter the cooling heat exchange assembly through the air inlet pipeline 1 for cooling, and then entering the hearth through the circulating fan 7 and the air outlet pipeline 2;
(S2) acquiring the gas temperature at the inlet end of the cooling heat exchange assembly, the gas temperature at the outlet end of the cooling heat exchange assembly and the gas temperature in the hearth in real time by adopting a sensor to obtain that the gas temperature at the inlet end of the cooling heat exchange assembly is T1, the gas temperature at the outlet end of the cooling heat exchange assembly is T2 and the gas temperature in the hearth is T3; the gas temperature at the inlet end of the cooling heat exchange assembly is collected through a first sensor, the gas temperature at the outlet end of the cooling heat exchange assembly is collected through a second sensor, and the gas temperature in the hearth is collected through a temperature sensor arranged in the hearth;
(S3) the computer is adopted to receive T1, T2 and T3 collected by the sensors, and the T1 is compared with a first preset value, the T2 is compared with a second preset value, and the T3 is compared with a third preset value, when at least one of the three comparison results of T1 > the first preset value, T2 > the second preset value and T3 > the third preset value is met, the computer controls the pre-configured automatic execution mechanism to automatically open the backflow control valve 4, so that cooled gas enters the air inlet pipeline 1 through the backflow pipeline 3 to meet the cooling requirement of the heat treatment kiln, and influence caused by overhigh gas temperature is avoided. The automatic execution mechanism comprises an electromagnetic driver for controlling the reflux control valve 4, an electromagnetic driver for controlling the circulation control valve 8 and a motor driver for controlling the circulating fan 7, and the electromagnetic drivers and the motor drivers are connected with a computer.
The cooling method adopts a computer to realize the automatic control of the work of the circulating cooling device, does not need manual operation, can reduce the labor intensity and cost of workers, and has the advantages of simple control flow, less required control equipment and timely and reliable regulation and control.
In this embodiment, preferably, in the step (S2), after the circulation fan 7 is started to reach the preset time, if at least one of the three comparison results, i.e., T1 > a third preset value, T2 > a fourth preset value, and T3 > a sixth preset value, is met, the computer controls the circulation fan 7 to increase the rotation speed, so that more cooled gas in the gas outlet pipeline 2 enters the gas inlet pipeline 1; wherein, the third preset value is larger than the first preset value, the fourth preset value is larger than the second preset value, and the sixth preset value is larger than the third preset value. When opening backward flow control valve 4 still can not satisfy the temperature control demand like this, realized that automatic increase circulating fan 7 rotational speed increases the cooling back gas volume that gets into air inlet pipe 1, guarantees that the gas that gets into cooling heat exchange assembly and the gas temperature of cooling heat exchange assembly output are in the settlement scope.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. Modifications and variations that may occur to those skilled in the art without departing from the spirit and scope of the invention are to be considered as within the scope of the invention.
Claims (10)
1. The utility model provides a circulative cooling device, includes cooling heat exchange assembly, cooling heat exchange assembly's entrance point is connected with and is used for treating gas inlet pipeline (1) that cooling heat exchange assembly let in, cooling heat exchange assembly's exit end is connected with and is used for cooling gas exhaust gas outlet pipeline (2) behind the heat exchange assembly cooling, its characterized in that: the air inlet pipeline (1) and the air outlet pipeline (2) are communicated through a return pipeline (3), and a return control valve (4) used for controlling the on-off of the return pipeline (3) is arranged on the return pipeline (3).
2. The circulation cooling device according to claim 1, wherein: the cooling heat exchange assembly comprises a heat exchange pipeline (5), a heat exchanger (6) and a circulating fan (7) are installed on the heat exchange pipeline (5) in a series connection mode, the inlet end of the heat exchange pipeline (5) is connected with the air inlet pipeline (1), and the outlet end of the heat exchange pipeline (5) is connected with the air outlet pipeline (2).
3. The circulation cooling device according to claim 2, wherein: the heat exchanger (6) and the circulating fan (7) are sequentially arranged in the heat exchange pipeline (5) along the direction from the inlet end to the outlet end of the heat exchange pipeline (5).
4. The circulation cooling device according to claim 2, wherein: and a first sensor for detecting the gas temperature and giving an alarm when the gas temperature exceeds a first threshold value is arranged at the inlet of the heat exchanger (6).
5. The circulation cooling device according to claim 2, wherein: and a second sensor for detecting the gas temperature and giving an alarm when the gas temperature exceeds a second threshold value is arranged at an outlet of the heat exchanger (6).
6. The circulation cooling device according to claim 2, wherein: the heat exchanger (6) is a water-cooling heat exchanger.
7. A circulating cooling device according to any one of claims 2 to 6, characterized in that: and a circulation control valve (8) for controlling the on-off of the heat exchange pipeline (5) is arranged on the air inlet pipeline (1), the air outlet pipeline (2) or the heat exchange pipeline (5).
8. A heat treatment kiln comprising a body (9) having a hearth, characterized in that: the circulating cooling device of claim 7, wherein the inlet pipeline (1) and the outlet pipeline (2) of the circulating cooling device are communicated with the hearth.
9. A cooling method of a heat treatment kiln of claim 8, characterized in that: the method comprises the following steps:
(S1) closing the reflux control valve (4) and the circulation control valve (8), and starting the circulating fan (7) to enable the circulating cooling device to start working;
(S2) acquiring the gas temperature at the inlet end of the cooling heat exchange assembly, the gas temperature at the outlet end of the cooling heat exchange assembly and the gas temperature in the hearth in real time by adopting a sensor to obtain that the gas temperature at the inlet end of the cooling heat exchange assembly is T1, the gas temperature at the outlet end of the cooling heat exchange assembly is T2 and the gas temperature in the hearth is T3;
(S3) the computer is adopted to receive the T1, the T2 and the T3 collected by the sensors, compare the T1 with a first preset value, compare the T2 with a second preset value and compare the T3 with a third preset value, and when at least one of the three comparison results of the T1 > the first preset value, the T2 > the second preset value and the T3 > the third preset value is met, the computer controls the pre-prepared automatic execution mechanism to automatically open the backflow control valve (4) and the circulation control valve (8).
10. The cooling method according to claim 9, characterized in that: in the step (S3), after the circulation fan (7) is started for a preset time, if at least one of the three comparison results of T1 > a third preset value, T2 > a fourth preset value and T3 > a sixth preset value is met, the computer controls the circulation fan (7) to increase the rotation speed; wherein, the third preset value is larger than the first preset value, the fourth preset value is larger than the second preset value, and the sixth preset value is larger than the third preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911395554.5A CN111057819A (en) | 2019-12-30 | 2019-12-30 | Circulating cooling device, heat treatment kiln and cooling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911395554.5A CN111057819A (en) | 2019-12-30 | 2019-12-30 | Circulating cooling device, heat treatment kiln and cooling method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111057819A true CN111057819A (en) | 2020-04-24 |
Family
ID=70304615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911395554.5A Pending CN111057819A (en) | 2019-12-30 | 2019-12-30 | Circulating cooling device, heat treatment kiln and cooling method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111057819A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2839936Y (en) * | 2005-11-13 | 2006-11-22 | 苏州汇科机电设备有限公司 | Bell-jar furnace circulating cooling device |
| CN1938510A (en) * | 2004-03-31 | 2007-03-28 | 斯堪尼亚有限公司 | Device for exhaust gas recirculation of a supercharged internal combustion engine |
| CN203479018U (en) * | 2013-08-07 | 2014-03-12 | 湖南和道资源科技有限公司 | Cooling system for circularly cooling high-temperature product through inert gas |
| CN203798174U (en) * | 2014-03-14 | 2014-08-27 | 湖南新天力科技有限公司 | Circulating cooling device for elevator furnace |
| CN104571183A (en) * | 2014-12-02 | 2015-04-29 | 兰州华宇航天技术应用有限责任公司 | Backheating gas mixed circulating refrigeration, heating and temperature adjustment system |
| CN209116746U (en) * | 2018-10-30 | 2019-07-16 | 湖南金炉科技股份有限公司 | Circulating cooling system for atmosphere bell-type furnace |
| CN209416034U (en) * | 2018-12-07 | 2019-09-20 | 湖南金炉科技股份有限公司 | A kind of furnace pressure control device of bell-type furnace |
| CN110335688A (en) * | 2019-06-27 | 2019-10-15 | 山东普瑞普勒能源科技有限公司 | A kind of tandem heat exchanger Spent Radioactive air cooling system |
| CN211620561U (en) * | 2019-12-30 | 2020-10-02 | 湖南金炉科技股份有限公司 | Circulating cooling device and heat treatment kiln |
-
2019
- 2019-12-30 CN CN201911395554.5A patent/CN111057819A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1938510A (en) * | 2004-03-31 | 2007-03-28 | 斯堪尼亚有限公司 | Device for exhaust gas recirculation of a supercharged internal combustion engine |
| CN2839936Y (en) * | 2005-11-13 | 2006-11-22 | 苏州汇科机电设备有限公司 | Bell-jar furnace circulating cooling device |
| CN203479018U (en) * | 2013-08-07 | 2014-03-12 | 湖南和道资源科技有限公司 | Cooling system for circularly cooling high-temperature product through inert gas |
| CN203798174U (en) * | 2014-03-14 | 2014-08-27 | 湖南新天力科技有限公司 | Circulating cooling device for elevator furnace |
| CN104571183A (en) * | 2014-12-02 | 2015-04-29 | 兰州华宇航天技术应用有限责任公司 | Backheating gas mixed circulating refrigeration, heating and temperature adjustment system |
| CN209116746U (en) * | 2018-10-30 | 2019-07-16 | 湖南金炉科技股份有限公司 | Circulating cooling system for atmosphere bell-type furnace |
| CN209416034U (en) * | 2018-12-07 | 2019-09-20 | 湖南金炉科技股份有限公司 | A kind of furnace pressure control device of bell-type furnace |
| CN110335688A (en) * | 2019-06-27 | 2019-10-15 | 山东普瑞普勒能源科技有限公司 | A kind of tandem heat exchanger Spent Radioactive air cooling system |
| CN211620561U (en) * | 2019-12-30 | 2020-10-02 | 湖南金炉科技股份有限公司 | Circulating cooling device and heat treatment kiln |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108054459B (en) | Thermal management system and thermal management method for vehicle battery pack | |
| CN102723535B (en) | Heat control system and method of power battery | |
| CN106762088A (en) | A kind of cooling system for vehicle cooled down for battery and charge air cooler and its method | |
| CN102650476A (en) | Energy-saving water chilling unit and water chilling control method for same | |
| CN111120038B (en) | Engine oil heat exchange system and vehicle | |
| CN201297253Y (en) | Heat recovery system of water-cooled air compressor | |
| CN211620561U (en) | Circulating cooling device and heat treatment kiln | |
| CN210172742U (en) | Reflow soldering equipment with automatic cooling function | |
| CN203335412U (en) | Air compressor combined cooling device | |
| CN207466354U (en) | Vehicle intelligent cooling system and electric vehicle | |
| CN111057819A (en) | Circulating cooling device, heat treatment kiln and cooling method thereof | |
| CN204513833U (en) | A kind of novel hybrid refrigeration device | |
| CN222637421U (en) | Battery compartment constant temperature control system of new energy ship and new energy ship | |
| CN110794888A (en) | A kind of permanent magnet motor self-adaptive regulation heat exchange system and method | |
| CN212535989U (en) | Lubricating oil waste heat recovery system for air compressor | |
| CN104596174A (en) | Cooling circulating device used for mining electrical equipment | |
| CN211116242U (en) | Degassing type cooling system for engineering machinery | |
| CN212274380U (en) | Multi-temperature water tank | |
| CN202028409U (en) | Rapid cooling type graphite decomposing device | |
| CN113027767A (en) | Marine diesel-driven screw type air compressor with high heat dissipation efficiency and machining method thereof | |
| CN217462318U (en) | Temperature control device of engine | |
| CN222143769U (en) | Oxygen-enriched air blast device of steel rolling heating furnace | |
| CN207554656U (en) | Vehicle matches the cooling system and automobile of Retarder | |
| CN111923723A (en) | A cooling system for extended-range electric vehicle and its control method | |
| CN223121967U (en) | Cascade utilization system of annular air cooler |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200424 |