CN87100082A

CN87100082A - Button type fully sealed high-speed opening and closing globe valve

Info

Publication number: CN87100082A
Application number: CN87100082.2A
Authority: CN
Inventors: 胡嘉彬; 张富
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-01-08
Filing date: 1987-01-08
Publication date: 1988-12-21
Also published as: CN1011735B

Abstract

Gas (liquid) basin, in the pipe-line system as the stop valve of start-stop device.

Light turn button (9) gets final product opening/shutting valve, and profile is a pipeline type, plays closure function with scalable corrugated cavity during keying.When switching motion, part is only done the telescopic resilience distortion, does not have wearing and tearing, the existence of no weight.Valve body is hermetically sealed, does not have any leakage, and switching motion is all finished, only 1～2 second, have the characteristics of high-speed opening and closing, and when producing reverse pressure reduction in the pipeline, closed conduct plays the safety protection effect automatically.

This stop valve uses lightly, is able to turn on or off various nominal bore valve with button (9), and high-speed opening and closing does not have wearing and tearing, and is the long lifetime, hermetically sealed, high pressure resistant.The pipeline type outer volume is little, and flow resistance is little, and occupy-place is little, and is easy for installation.

Description

Button type full-sealed high-speed opening and closing stop valve

International classification number F16K type;

gas (liquid) storage tank, and stop valve as opening and closing device in pipeline system.

The stop valve used as the opening and closing device at home and abroad mainly uses a butterfly valve, a ball valve and an old hand wheel to open and close. The sealing filler at the rotating part is easy to wear and generate slow leakage. When flammable and harmful gas (liquid) is in the pipeline, energy is wasted if the flammable and harmful gas (liquid) is in the pipeline, and danger is generated if the flammable and harmful gas (liquid) is in the pipeline. The butterfly valve and the ball valve need to rotate 90 degrees by a large torque. The hand wheel stop valve then needs 5 ~ 6 rings of rotatory hand wheel and just can open and close the valve, and switching speed is slow and hard big, and coal gas gets into the family, and the pipeline is opened and close and is adopted the hand wheel stop valve, opens and close hard to waste time, and coal gas is time spent for a long time not, only seals coal gas with the pneumatic switch of gas range, and manual switch, the joint is many, and the structure is not hard up, and factor such as wearing and tearing and filth make the ubiquitous of leaking slowly in the use, the extravagant energy, hide danger, the security. When accidents happen in the gas (liquid) pipeline which is harmful to explosion, the original various valves cannot meet the requirement of quickly cutting off the gas (liquid) source in a labor-saving way, and the reliability and the safety are lacked.

The button type full-sealed high-speed opening and closing stop valve is light and flexible, the stop valve can be opened and closed by slightly moving the button (9) with a force distance of only one kilogram, and the effect of opening and closing at high speed can be achieved by completing the whole opening and closing movement for 1-2 seconds. In the opening and closing process of the valve, all parts generate elastic deformation without abrasion or strong extrusion, and the valve has the characteristics of high reliability and long service life. The sealing pressure is automatically adjusted along with the gas (liquid) pressure, namely the gas (liquid) pressure is increased, the sealing pressure is automatically increased, and the sealing device has good synchronization effect, so that the sealing is reliable. All the sealing is realized, no leakage exists, the valve body is of a pipeline type, the flow resistance is small, the appearance is small and exquisite, the occupation is small, and the installation is easy.

The stop valve is used for gas (liquid) and is used as an opening and closing device in pipelines with various nominal pipe diameters under various pressure and temperature conditions.

The function principle of the button type full-sealed high-speed opening and closing stop valve is as follows:

-when the valve is opened:

the button (9) is rotated, the convex surface of the inclined plane push ring (10) presses the upper push rod (11), the lower push rod sealing ring (6) and the lower push rod (3). The lower push rod spring (5) is compressed and the starting piston (2) is pushed at the same time, so that a gap is generated between the starting piston and a starting piston sealing ring (23), and at the moment, gas (liquid) in the telescopic corrugated cavity (13) is discharged. The internal pressure is reduced, the pressure of the gas (liquid) at the inlet is greater than the pressure at the position of the blocking ring (8), the blocking ring (8) is pushed open, the gas (liquid) is unblocked, and the valve is opened.

-when closing the valve:

the button (9) is rotated to enable the concave surface of the inclined push ring (10) to face the upper push rod (11), and at the moment, the lower push rod (3), the lower push rod sealing ring (6) and the upper push rod (11) are jacked upwards due to the upward elastic force of the lower push rod spring (5). The starting piston (2) is tightly sealed with the starting piston sealing ring (23). The blocking ring spring (14) pushes the blocking ring (18) forwards, gas (liquid) is injected into the telescopic corrugated cavity (13) from a small hole in the center of the blocking ring (18), and the blocking ring (18) generates pressure which is larger than the pressure of the gas (liquid) at the inlet to close the inlet.

-self-sealing function:

the pipe generates reverse pressure difference due to leakage, rupture and other reasons, namely, the pressure at the inlet is lower than the pressure at the rear end of the valve. At the moment, gas (liquid) pushes away the starting piston (2), enters the telescopic corrugated cavity from the gap of the starting piston seal (23), pushes the conical plug (19), and closes the small hole of the blocking ring (18), so that the pressure in the telescopic corrugated cavity is greater than the pressure of the inlet, the inlet is closed by the blocking ring (18), the automatic closing function is realized, and the button (9) does not play a role in opening and closing at the moment.

Description of the drawings:

1. the rear valve body 2, the starting piston 3, the lower push rod 4, the lower push rod shell 5, the lower push rod spring 6, the lower push rod sealing ring 7, the lower push rod sealing ring fixing ring 8, the inclined plane push ring cover 9, the button 10, the inclined plane push ring 11, the upper push rod 12, the pin shaft 13, the telescopic corrugated cavity 14, the blocking ring spring 15, the front valve body 16, the conical plug snap spring 17, the blocking ring sealing ring 18, the blocking ring 19, the conical plug 20, the conical plug sealing ring 21, the conical plug spring 22, the conical plug sealing ring 23, the starting piston sealing ring 24, the sleeve 25, the valve body sealing ring

Example (b):

when the nominal caliber Dg of the valve is 20, the outer diameter phi is 44mm, and the length is 130 mm.

Claims

1. A stop valve as an opening and closing device in a pipeline system for gas (liquid). It features that the pipeline type or button type switch is equipped with a telescopic corrugated cavity made of metal or high-molecular material for opening and closing, and an automatic closing device for preventing reverse flow when pipeline generates reverse pressure difference.

2. A shut-off valve according to claim 1: the valve is characterized in that the front valve body (15) and the rear valve body (1) are of a pipeline type.

3. A characteristic feature according to claim 1 is that the button (9) has a button switch for opening and closing the valve.

4. A bellows-like chamber (13) according to claim 1, characterized in that it is made of metal or polymer material and is collapsible.

5. A device according to claims 1 and 4, characterized in that it is equipped with a rear sleeve (24), an occlusion ring (18), positioning and guiding means:

6. a device according to claim 1, characterized by a conical plug (19) for automatically closing the conduit when a reverse pressure difference is generated in the conduit and the gas (liquid) flows backwards.

7. According to claims 1 and 2, the integral valve is sealed by a lower push rod sealing ring (6).