CN217539829U

CN217539829U - Automatic cut-off valve for leakage of instrument air source

Info

Publication number: CN217539829U
Application number: CN202221178470.3U
Authority: CN
Inventors: 谢卫红; 朱国良; 朱国财; 朱培贤; 朱培兴; 朱培荣; 朱培斌
Original assignee: Krom (wuxi) Fluid Control Co ltd
Current assignee: Krom (wuxi) Fluid Control Co ltd
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-10-04
Anticipated expiration: 2032-05-13

Abstract

The utility model relates to a gas equipment technical field, concretely relates to automatic cutout valve is leaked to instrument air supply, it includes the valve body, first connector has been seted up at the valve body top, the inside first sealing device that is equipped with of first connector, the valve body is kept away from one side in first connector and has been seted up the second connector, the inside second sealing device that is equipped with of second connector, first connector runs through the inside intercommunication with the second connector of valve body and has constituted the intercommunication pipeline, the valve body both sides are intervention mouth respectively, the meson mouth, connecting channel has been seted up to the valve body outer wall, connecting channel through connection is inside the intercommunication pipeline, pressure alarm is installed in the connecting channel outside, the mainstream pipeline with first connector circulation is seted up at the inboard top of valve body, the mainstream pipeline, first connector, the working flow way is constituteed to the intercommunication pipeline, the side stream pipeline has been seted up to intervention mouth bottom, the side stream pipeline and second connector through connection and constitute the working flow way with the intercommunication pipeline, it is equipped with automatic cutout valve to lie in mainstream pipeline one side.

Description

Automatic cut-off valve for leakage of instrument air source

Technical Field

The utility model relates to a gas equipment field especially relates to an instrument air supply leaks automatic cutout valve.

Background

At present, along with the continuous improvement of urban environment protection requirements, the massive use of clean energy (liquefied petroleum gas, coal gas and natural gas) brings great convenience to the life of people, the massive use of fuel gas is the expression of social progress and urban modernization, the massive use of fuel gas greatly reduces the degree of urban pollution, simultaneously brings great convenience and efficiency to people, but simultaneously causes a plurality of disasters to the society, the damage caused by fuel gas leakage increases day by day, the fuel gas accident has more concealment and abruptness compared with explosion and fire caused by coal-fired accidents, is more difficult to detect and is more dangerous, the damage consequences of the fuel gas accident to people's life and property and the loss caused by social public safety are immeasurable, in recent years, aiming at the problems, a plurality of enterprises provide alarm devices of fuel gas leakage and fire, play a certain early warning role, but the alarm devices in the market have single functions, most of the alarm devices can only give an alarm, and can not further cut off the fuel gas, so that the occurrence of accidents is thoroughly avoided, and hidden dangers are still remained.

At present, chinese patent with publication number CN216112411U discloses a gas trip valve cuts off trigger device, it includes the gas trip valve, gas trip valve top fixed mounting has adjusting valve rod, adjusting valve rod top is inlayed and is installed the gag lever post, gag lever post top fixed mounting has the fixed plate, fixed plate top integrated into one piece has the barrel, the keyway has been seted up on barrel inner wall left side, spacing bolt is installed to barrel outer wall left side screw thread, the mounting ring is all inlayed and installed to the left and right sides of gas trip valve, mounting ring top demountable installation has the support frame.

Although this kind of gas trip valve cuts off trigger device is just reversing through wireless signal receiver remote control slow speed servo motor to drive the just reversing of gag lever post, the gag lever post corotation can let adjusting valve rod forward rotating, can realize the cutting off of gas trip valve, but: the gas cut-off valve cutting-off triggering device is not provided with an alarm device, and meanwhile, a leaking part cannot be cut off in the first time and a maintainer is informed to carry out maintenance work, so that certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model aims to provide an automatic trip valve is leaked to instrument air supply, its advantage that has the utility model discloses possess alarm device, trigger alarm system and carry out automatic cutout work when taking place to leak, the warning informs the maintainer to overhaul work simultaneously.

The above technical object of the present invention can be achieved by the following technical solutions:

the utility model provides an instrument air supply leaks automatic cutout valve, includes the valve body, first connector has been seted up at the valve body top, the inside first sealing device that is equipped with of first connector, the valve body is kept away from and has been seted up the second connector in one side of first connector, the inside second sealing device that is equipped with of second connector, first connector runs through the inside intercommunication of valve body and has constituted the intercommunication pipeline with the second connector, the valve body both sides are intervention mouth, jie's mouth respectively, connecting channel has been seted up to valve body outer wall, connecting channel through connection is inside the intercommunication pipeline, the pressure alarm is installed in the connecting channel outside, the mainstream pipeline with first connector circulation is seted up at the inboard top of valve body, mainstream pipeline, first connector, intercommunication pipeline constitute the working flow way, the intervention mouth bottom has seted up the side-stream pipeline adapter sleeve, side-stream pipeline and second connector through connection and constitute the working flow way with the intercommunication pipeline, it is equipped with automatic cutout valve to lie in mainstream pipeline one side, automatic cutout valve includes spring valve plug, adapter sleeve fixed connection is inside the valve plug gets into the face and links to link to each other with left end face, the pressure relief groove has been seted up with valve plug department, valve seal department constitutes first sealing is installed in the spring seal and is installed in the spring is closed through the balanced spring coefficient of spring and the design with the spring is according to the size of automatic cutout with the design.

By adopting the technical scheme, when the device works normally, the second connecting port is in a closed state, the medium can only enter from the first connecting port at the moment, the medium can pass through the automatic cut-off valve in the process of entering, the main flow pipeline and the communicating pipeline, and finally flows into the medium outlet, once leakage occurs in the medium flowing working process, the pressure alarm can automatically send an alarm to remind workers to detect and maintain when detecting air pressure lower than input air pressure, the workers firstly close the first connecting port in the detecting and maintaining process, at the moment, the valve plug can cause the valve plug to move leftwards according to certain pressure difference and through the elastic coefficient design of the spring until the valve plug contacts with the valve body and seals the main flow pipeline, and meanwhile, the second connecting port can be opened again, the medium can enter the second connecting port through the auxiliary flow pipeline at the moment, and finally enters the medium outlet through the communicating pipeline to perform flowing work, after the detecting and maintaining work is finished, at the moment, the workers close the second connecting port, and open the first connecting port to perform normal flowing work.

Further setting: the first sealing device comprises a first valve cover, a first valve core, a first valve rod and a first handle, the first valve cover is installed inside the first connecting port, the first valve core is installed between the first valve cover and the valve body, the first valve core and the valve body form a second sealing position, the first valve rod is fixedly installed at the top of the first valve core, a first connecting block is fixedly connected to the top of the first valve rod, the first handle is fixedly connected to the top of the first connecting block, a first filler is arranged between the outer side of the first valve rod and the first valve cover, and a first pressing block for pressing the first filler is arranged at the top of the first filler.

Through adopting above-mentioned technical scheme, when medium normally circulates the during operation, the staff does through the case that the first handle of pulling and reciprocates the work, and the medium of circulation this moment can enter into first connecting port through mainstream pipeline, circulates after that and gets into the communicating pipe, and the sealed department of second is constituted with the cooperation of valve body to first case, plays certain sealed effect, guarantees the leakproofness of medium at the circulation in-process, prevents to leak and causes the accident.

Further setting: the second sealing device comprises a second valve cover, a second valve core, a second valve rod and a second handle, the second valve cover is installed inside the second connecting port, the second valve core is installed between the second valve cover and the valve body, the second valve core and the valve body form a third sealing position, the second valve rod is fixedly installed at the bottom of the second valve core, a second connecting block is fixedly connected to the bottom of the second valve rod, the second handle is fixedly connected to the bottom of the second connecting block, a second filler is arranged between the outer side of the second valve core and the second valve cover, and a second pressing block for pressing the second filler is arranged at the bottom of the second filler.

Through adopting above-mentioned technical scheme, when the emergence is leaked, first connector in closed operating condition, the staff can draw the second handle when overhauing the work this moment, and the second valve core on the second handle can draw the work along with the second handle together this moment, and the medium can circulate to the second connector through side-stream pipeline this moment, and the circulation gets into the intercommunication pipeline after that, guarantees the smooth circulation work of medium in the work process of overhauing.

Further setting: the medium outlet is communicated with the communication pipeline.

Through adopting above-mentioned technical scheme, in the middle of the medium circulation working process, no matter be first connector department in the state of opening, still the second connector is in the state of opening, the medium of circulation all can be through the intercommunication pipeline, get into smoothly through the intercommunication pipeline at last and see through the mouth, can both guarantee the smooth circulation of medium, in case when the leakage accident takes place simultaneously, the medium in the intercommunication pipeline can be through interface channel, the medium detection its pressure value and the alarm of sending out of pressure alarm on the interface channel this moment according to the circulation.

To sum up, the utility model discloses following beneficial effect has:

1. the utility model discloses possess alarm device, trigger alarm system and carry out automatic cutout work when the emergence is leaked, the while alarm informs the maintainer to overhaul work, normal during operation, the second connector is in the closed condition, the medium can only get into from first connector this moment, can pass through automatic cutout valve in the middle of the process that the medium got into, mainstream pipeline, the intercommunication pipeline, the export is situated between in last circulation entering, in case the emergence is leaked in medium circulation course of the work, pressure alarm can send out the police dispatch newspaper automatically when detecting the atmospheric pressure that is less than the input and remind the workman to detect the maintenance this moment, the staff closes first connector restriction medium circulation in the maintenance process, valve plug cooperation spring can move according to certain pressure differential left this moment until and seal mainstream pipeline with the valve body contact.

2. The utility model discloses when meetting the circulation and leaking the condition, can also guarantee that the circulation of medium is smooth and easy, in-process workman at the testing and maintenance at first closes first connecting port, valve plug cooperation spring can move left according to certain pressure differential until with the valve body contact and seal mainstream pipeline this moment, draw the second handle after that simultaneously, second valve core on the second handle can draw work along with the second handle together this moment, the medium can flow to the second connector through side-stream pipeline this moment, flow after that and get into the intercommunication pipeline, the smooth circulation work of medium has been guaranteed in the maintenance course of the work.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention:

fig. 1 is a front sectional view of the present invention;

fig. 2 is a side sectional view of the present invention.

In the figure, 1, a valve body; 2. a first connection port; 3. a first sealing device; 4. a second connection port; 5. a second sealing device; 6. a communicating pipe; 7. an inlet port; 8. a medium outlet; 9. a connecting channel; 10. a pressure alarm; 11. a main flow conduit; 12. a secondary flow conduit; 13. an automatic shut-off valve; 14. a spring; 15. a valve plug; 16. connecting sleeves; 17. a pressure relief groove; 18. a first seal; 19. a first valve cover; 20. a first valve spool; 21. a first valve stem; 22. a first handle; 23. a first connection block; 24. a first filler; 25. a first compact block; 26. a second valve cover; 27. a second valve core; 28. a second valve stem; 29. a second handle; 30. a second connecting block; 31. a second filler; 32. a second compact block; 33. a second seal; 34. and a third seal.

Detailed Description

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying drawings in which fig. 1 through 2 are shown. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

Example 1: the utility model provides an instrument air supply leaks automatic cutout valve, as shown in fig. 1, 2, including valve body 1, first connector 2 has been seted up at valve body 1 top, first connector 2 is inside to be equipped with first sealing device 3, first sealing device 3 includes first valve gap 19, first case 20, first valve rod 21, first handle 22, first valve gap 19 is installed inside first connector 2, first case 20 is installed between first valve gap 19 and valve body 1 and first case 20 and valve body 1 constitute second sealed department 33, first valve rod 21 fixed mounting is in first valve gap 20 top, first valve rod 21 top fixedly connected with first connecting block 23, first handle 22 fixed connection is in first connecting block 23 top, be equipped with first filler 24 between the first valve rod 21 outside and first valve gap 19, first filler 24 top is equipped with the first compact heap 25 that compresses tightly first filler 24, when the medium is in normal circulation operating condition, draw first handle 22 to first valve gap 20 on first handle 22 to keep away from first connector 2, the medium can normally circulate through first connector 2 at this moment.

As shown in fig. 1 and 2, a second connection port 4 is formed on one side of the valve body 1, which is far away from the first connection port 2, a second sealing device 5 is arranged inside the second connection port 4, the second sealing device 5 includes a second valve cover 26, a second valve core 27, a second valve rod 28 and a second handle 29, the second valve cover 26 is arranged inside the second connection port 4, the second valve core 27 is arranged between the second valve cover 26 and the valve body 1, and the second valve core 27 and the valve body 1 form a third sealing position 34, the second valve rod 28 is fixedly arranged at the bottom of the second valve core 27, a second connection block 30 is fixedly connected to the bottom of the second valve rod 28, the second handle 29 is fixedly connected to the bottom of the second connection block 30, a second filler 31 is arranged between the outer side of the second valve core 27 and the second valve cover 26, a second compression block 32 for compressing the second filler 31 is arranged at the bottom of the second filler 31, when the first connection port 2 is in a closed state in case, the case of an emergency, the second connection port 29 is pulled up, and the second valve core 29 is far away from the second connection port 4, so as to ensure that a medium can normally circulate.

As shown in fig. 1 and 2, the first connection port 2 penetrates through the inside of the valve body 1 and is communicated with the second connection port 4 to form a communication pipeline 6, the two sides of the valve body 1 are respectively an intervention port 7 and an intervention port 8, the outer wall of the valve body 1 is provided with a connection channel 9, the connection channel 9 is connected inside the communication pipeline 6 in a penetrating manner, a pressure alarm 10 is installed outside the connection channel 9, the top of the inside of the valve body 1 is provided with a main flow pipeline 11 communicated with the first connection port 2, the main flow pipeline 11, the first connection port 2 and the communication pipeline 6 form a working flow channel, the bottom of the intervention port 7 is provided with an auxiliary flow pipeline 12, the auxiliary flow pipeline 12 is connected with the second connection port 4 in a penetrating manner and forms a working flow channel with the communication pipeline 6, an automatic shutoff valve 13 is arranged on one side of the main flow pipeline 11 in the valve body 1, the automatic shutoff valve 13 comprises a spring 14, a valve plug 15 and a connection sleeve 16, the connection sleeve 16 is fixedly connected inside the valve body 1, the entrance surface of the valve plug 15 is connected with the left end surface of the connection sleeve 16, the valve plug 15 is provided with a pressure relief groove 17, the valve plug 15 and the valve plug 15 form a first sealing part 18, the left end surface, the spring 14 is installed on the left end surface of the valve plug 15, and the left end surface, and the valve plug 15 are balanced according to realize the pressure difference.

The utility model discloses an among the embodiment, when normal work, second connector 4 is in the closed condition, the medium can only get into from first connector 2 this moment, can pass through automatic shutoff valve 13 in the middle of the process that the medium got into, mainstream pipeline 11, intercommunication pipeline 6, the last circulation gets into the medium export 8, in case take place to leak in the medium circulation course of work, pressure alarm 10 detects and can send out the warning to remind workman to detect the maintenance when being less than the atmospheric pressure of input, the in-process workman at the detection maintenance at first presses down first handle 22 and cooperates first case 20 on the handle to compress tightly the work downwards, first case 20 lower extreme can form encapsulated situation with first connector 2 this moment, first connector 2 is in the closed condition this moment, spring 14 on the automatic shutoff valve 13 at this moment passes through the design of elasticity coefficient and valve plug 15 realizes the closed condition according to pressure difference size, valve plug 15 can move left according to certain pressure difference until contacting with valve body 1 and sealing mainstream pipeline 11, the workman draws and rises second handle 29 and cooperates second case 27 on the second handle 29 to leave second connector 4 and cooperates this moment, second connector 4 can enter into through second pipeline 12 this moment and normally the circulation of work export 8, this moment, the circulation of work is carried out through second connector this moment, the second connector 8.

The above description is provided for further details of the present invention with reference to the specific embodiments, which should not be construed as limiting the present invention; to the utility model discloses affiliated and relevant technical field's technical staff is based on the utility model discloses under the technical scheme thinking prerequisite, the extension of doing and the replacement of operating method, data all should fall within the utility model discloses within the scope.

Claims

1. The utility model provides an instrument air supply leaks automatic cutout valve, includes valve body (1), its characterized in that: the pressure alarm is characterized in that a first connecting port (2) is formed in the top of the valve body (1), a first sealing device (3) is arranged inside the first connecting port (2), a second connecting port (4) is formed in one side, far away from the first connecting port (2), of the valve body (1), a second sealing device (5) is arranged inside the second connecting port (4), the first connecting port (2) penetrates through the inside of the valve body (1) and is communicated with the second connecting port (4) to form a communicating pipeline (6), the two sides of the valve body (1) are respectively an intervention port (7) and an intervention port (8), a connecting channel (9) is formed in the outer wall of the valve body (1), the connecting channel (9) penetrates through the communicating pipeline (6), a pressure alarm (10) is installed on the outer side of the connecting channel (9), a main flow pipeline (11) communicated with the first connecting port (2) is formed in the top of the inner side of the valve body (1), a working flow channel (11), a first connecting port (2) and a communication pipeline (6) form a working flow channel, a secondary flow pipeline (12) is formed in one side of the second connecting port (4) and is connected with the automatic connecting pipeline (13), automatic trip valve (13) are including spring (14), valve plug (15), adapter sleeve (16) fixed connection is inside valve body (1), valve plug (15) entering face links to each other with adapter sleeve (16) left end face, pressure relief groove (17) have been seted up to valve plug (15) entering face, valve plug (15) constitute first sealed department (18) with valve body (1), the left end face in valve plug (15) is installed in spring (14), spring (14) are realized opening and the automatic balance of closing according to pressure differential size through the design of elastic coefficient and valve plug (15).

2. The automatic cut-off valve for leakage of instrument gas source according to claim 1, characterized in that: the first sealing device (3) comprises a first valve cover (19), a first valve core (20), a first valve rod (21) and a first handle (22), the first valve cover (19) is installed inside the first connecting port (2), the first valve core (20) is installed between the first valve cover (19) and the valve body (1), the first valve core (20) and the valve body (1) form a second sealing position (33), the first valve rod (21) is fixedly installed at the top of the first valve core (20), the top of the first valve rod (21) is fixedly connected with a first connecting block (23), the first handle (22) is fixedly connected to the top of the first connecting block (23), a first filler (24) is arranged between the outer side of the first valve rod (21) and the first valve cover (19), and a first compressing block (25) for compressing the first filler (24) is arranged at the top of the first filler (24).

3. The automatic cut-off valve for leakage of instrument gas source according to claim 1, characterized in that: the second sealing device (5) comprises a second valve cover (26), a second valve core (27), a second valve rod (28) and a second handle (29), the second valve cover (26) is installed inside the second connecting port (4), the second valve core (27) is installed between the second valve cover (26) and the valve body (1), the second valve core (27) and the valve body (1) form a third sealing position (34), the second valve rod (28) is fixedly installed at the bottom of the second valve core (27), the bottom of the second valve rod (28) is fixedly connected with a second connecting block (30), the second handle (29) is fixedly connected to the bottom of the second connecting block (30), a second filler (31) is arranged between the outer side of the second valve core (27) and the second valve cover (26), and a second pressing block (32) for pressing the second filler (31) is arranged at the bottom of the second filler (31).

4. The automatic cut-off valve for leakage of instrument gas source according to claim 1, characterized in that: the medium outlet (8) is communicated with the communication pipeline (6).