CN219570975U

CN219570975U - Multi-airflow-cavity gas shut-off valve

Info

Publication number: CN219570975U
Application number: CN202320509414.1U
Authority: CN
Inventors: 高子鑫; 赵恩云; 李林国
Original assignee: TAIZHOU PANSHI METALIC PRODECT CO LTD
Current assignee: TAIZHOU PANSHI METALIC PRODECT CO LTD
Priority date: 2023-03-09
Filing date: 2023-03-09
Publication date: 2023-08-22
Anticipated expiration: 2033-03-09

Abstract

The utility model provides a multi-airflow-cavity gas shut-off valve, which belongs to the field of gas safety and solves the problem that the existing gas shut-off valve is easy to damage due to overlarge gas pressure.

Description

Multi-airflow-cavity gas shut-off valve

Technical Field

The utility model belongs to the field of gas safety, and relates to a gas valve, in particular to a multi-airflow-cavity gas shut-off valve.

Background

The gas valve is a novel safety matching device for gas pipeline engineering; the valve is used for cutting off, connecting and regulating the gas in the pipeline, and has good control characteristics and closing sealing performance; it is suitable for various gas medium pipelines such as city gas, liquefied petroleum gas, natural gas, oxygen, etc.

The existing gas pressure reducing valve generally adopts a group of springs, as known in patent literature of application number "2015155172. X", patent name "a gas shut-off valve", comprising a valve body with mounting screw on both sides, a valve cover, a valve rod mounted in the valve body, a valve disc and a reset spring, wherein the upper part of the valve body is provided with a valve rod mounting hole, the valve rod is upwards communicated to the outside of the valve body, the periphery of the upper part of the valve rod is provided with windings, a winding matrix, a permanent magnet and a control circuit board through a winding bracket, wherein the inner cavity of the winding matrix is provided with a bushing, a sliding valve is slidingly mounted on the upper part of the bushing and forms clearance fit with the bushing, and the upper part of the valve rod is fixedly mounted at the bottom of the sliding valve; the middle part of the valve rod is sleeved with a guide sleeve, and the guide sleeve is coaxial with the sliding valve and forms clearance fit with the bushing; a cylindrical spring is arranged between the upper part of the guide sleeve and the sliding valve, and the lower part of the guide sleeve extends downwards into the valve body and is in sealing connection with the valve body. The gas shut-off valve has the advantages of simple structure, good sealing effect, difficult damage and long service life, and is suitable for popularization and application.

Above-mentioned many air current chamber gas shut-off valve does not set up diaphragm or other too big protective structure of pressure, and the excessive pressure has the potential safety hazard in the valve, and the structure is non-modular design, and it is complicated to need whole operation of tearing open when detecting the overhauling, does not have instantaneous pressure protective structure, and the excessive gas pressure is instantaneous to strike the valve body and is liable to cause the damage to the valve.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides the multi-airflow-cavity gas shut-off valve with high safety and large pressure bearing range.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a many air current chamber gas trip valve, its characterized in that, this many air current chamber gas trip valve is including having the valve body of inlet end, outlet end, upper junction end and lower link, the external gas trip unit that has of upper junction end of valve body, its lower link external pressure protection unit that has, the valve body in and with be provided with the valve gap between the gas trip unit, the valve body in and be located the valve gap bottom and be equipped with the plunger, the valve body in have a plurality of separating layer, a plurality of separating layer separate a plurality of air current chamber in with the valve body.

In the multi-airflow-cavity gas shut-off valve, the partition layer comprises an inner partition layer and an outer partition layer, an airflow cavity I is arranged between the inner partition layer and the outer partition layer, an airflow cavity II for a plunger to be installed is arranged in the inner partition layer, an airflow hole II communicated with the airflow cavity I is formed in the top end of the plunger, an airflow cavity III is formed between the valve body and the pressure protection unit, an air inlet flow passage is formed in the air inlet end, an airflow hole I communicated with the air inlet end and the airflow cavity III is formed in the valve body, an airflow hole II communicated with the airflow cavity III is further formed in the valve body, and an air outlet flow passage communicated with the airflow cavity II is formed in the air outlet end.

In the multi-airflow-cavity gas shut-off valve, the pressure protection unit comprises a housing, the lower connecting end and the housing between be equipped with the diaphragm unit, the diaphragm unit include the diaphragm that inside cavity set up, and this diaphragm below is equipped with the tray, diaphragm and tray be fixed as an organic wholely with the snap ring, be equipped with the exhaust unit on the housing, the spacer that is equipped with on the exhaust unit, and be equipped with the spring of connecting the diaphragm unit on this spacer, the diaphragm unit on be equipped with the pressure regulating structure of passive regulation gas pressure, the pressure regulating structure be connected with the diaphragm unit through the connecting rod, the pressure regulating structure including locating the sealing member of connecting rod top, and establish the spring holder on this sealing member, the spring holder be connected with the plunger through trapezoidal spring.

In the gas shut-off valve with multiple airflow chambers, the gas shut-off unit comprises a shell, a framework is arranged in the shell, a coil rack is arranged in the framework, a copper coil is arranged on the coil rack, a magnet and a static iron sheet are arranged below the coil rack, a valve core is arranged in the framework and is divided into an upper connecting rod and a lower connecting rod, a handle cover is arranged at the bottom of the upper connecting rod, an elastic blocking ball is arranged on the lower connecting rod, a spring is arranged between the elastic blocking ball and a valve cover, and a protective cover for protecting the handle cover is further arranged on the shell.

In the multi-airflow-cavity gas shut-off valve, the pipe wall of the air inlet end is provided with the overpressure reset unit, the overpressure reset unit comprises a main body fixed on the valve body, an operating rod is arranged in the main body, a key cap is arranged above the operating rod, a spring connected with the main body is arranged in the key cap, and a movable steel ball is arranged in the air inlet end.

In the multi-airflow-cavity fuel gas shut-off valve, the air inlet end is provided with the connecting and fixing unit.

Compared with the prior art, this many air current chamber gas shut-off valve adopts multilayer structure's valve body and modularization unit, the protective layer is connected gas automatic cutout unit, increase the leakproofness with inside gas circuit separation, valve body multilayer ring structure is connected with the strengthening rib, valve body intensity increases, pressure protection unit and gas automatic cutout unit are the modularization unit, pressure protection unit's diaphragm deformation when pressure is too big, the sealing member of diaphragm top also can move down along with the deformation of diaphragm and block up the air vent, change gas flow, the steel ball of excessive pressure reset unit is blown and blocked the sealing washer mouth and prevent that too big atmospheric pressure from causing the harm to the valve body when instantaneous atmospheric pressure is too big, can press the key cap after the atmospheric pressure is stable and reset the jar ball and make the gas circuit communicate again, handle lid on the gas automatic cutout unit can manual operation close the gas circuit.

Drawings

FIG. 1 is a schematic diagram of a semi-planing explosion structure with a split structure of a multi-airflow cavity fuel gas shut-off valve unit.

Fig. 2 is a schematic diagram of a half plane structure of a valve body of the multi-airflow-cavity fuel gas shut-off valve.

Fig. 3 is a schematic top view of the valve body of the multi-airflow-cavity fuel gas shut-off valve.

Fig. 4 is a schematic diagram of a semi-planing structure of the gas automatic shutoff unit of the gas shutoff valve with multiple airflow chambers.

Fig. 5 is a schematic structural view of the valve core of the multi-airflow-cavity fuel gas shut-off valve.

Fig. 6 is a schematic diagram of a half plane structure of the pressure protection unit of the fuel gas shutoff piece.

Fig. 7 is a schematic diagram of a semi-planing structure of the overpressure reset unit of the multi-airflow cavity fuel gas shutoff valve.

In the figure, 1, a connecting and fixing unit; 2. an overvoltage reset unit; 3. a steel ball; 4. a cushion block; 5. a plunger; 6. a valve body; 7. a pressure protection unit; 8. a gas shutoff unit; 9. a protective cover; 10. an elastic guide block; 11. a housing; 12. a copper coil; 13. a magnet; 14. a valve core; 15. a skeleton; 16. a coil former; 17. a power line; 18. a static iron sheet; 19. a valve cover; 20. an upper connecting rod; 21. a lower connecting rod; 22. elastic blocking balls; 23. a handle cover; 24. a spring fixing member; 25. a membrane; 26. a positioning piece; 27. a housing; 28. a positioning sheet; 29. a seal; 30. a connecting rod; 31. a tray; 32. a clasp; 33. an exhaust hole; 34. an exhaust unit; 35. a key cap; 36. an operation lever; 37. a main body; 38. an air inlet end; 39. an intake runner; 40. an airflow cavity III; 41. the first air hole is crossed; 42. a gas outlet flow passage; 43. an outer barrier layer; 44. an airflow cavity I; 45. an airflow cavity II; 46. an inner barrier layer; 47. an air outlet end; 48. a second air passing hole; 49. and air holes III and 50 and an elastic gasket.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1 and 2, the multi-airflow-cavity gas shut-off valve is characterized by comprising a valve body 6 with an air inlet end 38, an air outlet end 47, an upper connecting end and a lower connecting end, wherein the upper connecting end of the valve body 6 is externally connected with a gas shut-off unit 8, the lower connecting end of the valve body 6 is externally connected with a pressure protection unit 7, a valve cover 19 is arranged between the valve body 6 and the gas shut-off unit 8, a plunger 5 is arranged in the valve body 6 and positioned at the bottom of the valve cover 19, a plurality of isolating layers are arranged in the valve body 6, and the valve body 6 is internally isolated by the plurality of isolating layers from a plurality of airflow cavities.

Preferably, the partition layer comprises an inner partition layer 46 and an outer partition layer 43, an air flow cavity I44 is arranged between the inner partition layer 46 and the outer partition layer 43, an air flow cavity II 45 for the plunger 5 to be installed is arranged in the inner partition layer 46, an air passing hole III 49 communicated with the air flow cavity I44 is arranged at the top end of the plunger 5, an air flow cavity III 40 is formed between the valve body 6 and the pressure protection unit 7, an air inlet flow passage 39 is arranged in the air inlet end 38, an air passing hole I41 communicated with the air inlet end 38 and the air flow cavity III 40 is arranged on the valve body 6, an air passing hole II 48 communicated with the air flow cavity III 40 and the air flow cavity II 45 is arranged on the valve body 6, and an air outlet flow passage 42 communicated with the air flow cavity II 45 is arranged in the air outlet end 47.

Preferably, the pressure protection unit 7 includes a housing 27, a diaphragm unit is disposed between the lower connection end and the housing 27, the diaphragm unit includes a diaphragm 25 disposed in a hollow manner, a tray 31 is disposed below the diaphragm 25, the diaphragm 25 and the tray 31 are fixed as a unit with a snap ring 32, an exhaust unit 34 is disposed on the housing 27, a positioning plate 28 disposed on the exhaust unit 34 is disposed, a spring connected with the diaphragm unit is disposed on the positioning plate 28, a pressure regulating structure for passively regulating the gas pressure is disposed on the diaphragm unit, the pressure regulating structure is connected with the diaphragm unit through a connecting rod 30, the pressure regulating structure includes a sealing member 29 disposed above the connecting rod 30, and a spring fixing member 24 is disposed on the sealing member 29, the spring fixing member 24 is provided with a notch for the sealing member 29 to be clamped in, the spring fixing member 24 is connected with the plunger 5 through a trapezoidal spring, when the internal gas pressure is too large, the diaphragm 25 is deformed downward due to the gas pressure, the sealing member 29 above the diaphragm 25 moves downward to block the gas outlet, and the gas pressure inside the valve body 6 is reduced.

Preferably, the gas cutting unit comprises a shell 11, a framework 15 is arranged in the shell 11, a coil rack 16 is arranged in the framework 15, a copper coil 12 is arranged on the coil rack 16, the copper coil 12 is connected with an electric wire, a magnet 13 and a static iron sheet 18 are arranged below the coil rack 16, the static iron sheet 18 is clamped and fixed at the bottom of the shell 11, a valve core 14 is arranged in the framework 15, the valve core 14 is divided into an upper connecting rod 20 and a lower connecting rod 21, a handle cover 23 is arranged at the bottom of the upper connecting rod 20, an elastic blocking ball 22 is arranged on the lower connecting rod 21, a spring is arranged between the elastic blocking ball 22 and a valve cover 19, a protective cover 9 for protecting the handle cover 23 is also arranged on the shell 11, after gas leakage is detected, the gas valve is powered off, the copper coil 12 loses magnetic force, and the spring above the elastic blocking ball 22 releases elastic potential energy to move downwards to block an elastic gasket 50, and a gas path is cut off.

Preferably, the pipe wall of the air inlet end 38 is provided with the overpressure resetting unit 2, the overpressure resetting unit 2 comprises a main body 37 fixed on the valve body 6, an operating rod 36 is arranged in the main body 37, a key cap 35 is arranged above the operating rod 36, a spring connected with the main body 37 is arranged in the key cap 35, a movable steel ball 3 is arranged in the air inlet end 38, after fuel gas enters the valve body 6 too fast, the internal air flow is too large, the steel ball 3 is blown to block the cushion block 4, only the key cap 35 is pressed down, and the steel ball 3 is driven by the operating rod 36 to fall back to the pipeline air path to be reconnected.

Preferably, the air inlet end 38 is provided with a connecting and fixing unit 1, and the fuel gas enters through the connecting and fixing unit 1, sequentially passes through the air inlet end 38, the air inlet runner 39, the air passing hole I41, the air flow cavity I44, the plunger 5, the air outlet runner 42 and is guided out by the air outlet end 47.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although terms of the connection fixing unit 1, the overpressure resetting unit 2, the steel ball 3, the spacer 4, the plunger 5, the valve body 6, the pressure protection unit 7, the gas shut-off unit 8, the protection cover 9, the static iron seat 10, the housing 11, the copper coil 12, the magnet 13, the valve core 14, the bobbin 15, the bobbin 16, the power supply line 17, the static iron piece 18, the valve cover 19, the upper link 20, the lower link 21, the elastic blocking ball 22, the handle cover 23, the spring holder 24, the diaphragm 25, the positioning piece 26, the housing 27, the positioning piece 28, the sealing piece 29, the link 30, the tray 31, the snap ring 32, the exhaust hole 33, the exhaust unit 34, the key cap 35, the operation lever 36, the main body 37, the intake end 38, the intake runner 39, the third air flow chamber 40, the first air vent hole 41, the air vent runner 42, the outer blocking layer 43, the first air flow chamber 44, the second air flow chamber 45, the inner blocking layer 46, the air vent end 47, the second air vent 48, the third air vent 49, the elastic washer 50, etc. are used herein, the other terms are not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims

1. The utility model provides a many air current chamber gas trip valve, its characterized in that, this many air current chamber gas trip valve is including having air inlet end (38), outlet end (47), go up valve body (6) of link and lower link, the external gas trip unit (8) that have of upper link of valve body (6), its lower link external pressure protection unit (7) that have, valve body (6) in and with gas trip unit (8) between be provided with valve gap (19), valve body (6) in and be located valve gap (19) bottom and be equipped with plunger (5), valve body (6) in have a plurality of separating layer, a plurality of separating layer separate a plurality of air current chamber in with valve body (6).

2. The multi-airflow-cavity gas shut-off valve according to claim 1, wherein the partition layer comprises an inner partition layer (46) and an outer partition layer (43), an airflow cavity I (44) is arranged between the inner partition layer (46) and the outer partition layer (43), an airflow cavity II (45) for the plunger (5) to be installed is arranged in the inner partition layer (46), an air passing hole III (49) communicated with the airflow cavity I (44) is arranged at the top end of the plunger (5), an airflow cavity III (40) is formed in the valve body (6) and between the valve body and the pressure protection unit (7), an air inlet flow channel (39) is formed in the air inlet end (38), an air passing hole I (41) for communicating the air inlet end (38) with the airflow cavity III (40) is arranged on the valve body (6), an air passing hole II (48) for enabling the airflow cavity III (40) and the airflow cavity II (45) to be communicated with each other, and an air outlet flow channel (42) communicated with the airflow cavity II (45) is arranged in the air outlet end (47).

3. The multi-airflow-cavity gas shut-off valve according to claim 1, wherein the pressure protection unit (7) comprises a housing (27), a diaphragm (25) unit is arranged between the lower connecting end and the housing (27), the diaphragm (25) unit comprises a diaphragm (25) arranged in a hollow mode, a tray (31) is arranged below the diaphragm (25), the diaphragm (25) and the tray (31) are fixed into a whole by a piece and a clamping ring (32), an exhaust unit (34) is arranged on the housing (27), a positioning piece (28) is arranged on the exhaust unit (34), a spring connected with the diaphragm (25) unit is arranged on the positioning piece (28), a pressure regulating structure for passively regulating the gas pressure is arranged on the diaphragm (25) unit, the pressure regulating structure is connected with the diaphragm (25) unit by a connecting rod (30), the pressure regulating structure comprises a sealing piece (29) arranged above the connecting rod (30), a spring fixing piece (24) is arranged on the sealing piece (29), and the spring fixing piece (24) is connected with the plunger (5) by a trapezoid spring.

4. The multi-airflow-cavity gas shut-off valve according to claim 1, wherein the gas shut-off unit (8) comprises a housing (11), a framework (15) is arranged in the housing (11), a coil rack (16) is arranged in the framework (15), a copper coil (12) is arranged on the coil rack (16), a magnet (13) and a static iron sheet (18) are arranged below the coil rack (16), a valve core (14) is arranged inside the framework (15), the valve core (14) is divided into an upper connecting rod (20) and a lower connecting rod (21), a handle cover (23) is arranged at the bottom of the upper connecting rod (20), an elastic blocking ball (22) is arranged on the lower connecting rod (21), a spring is arranged between the elastic blocking ball (22) and the valve cover (19), and a protective cover (9) for protecting the handle cover (23) is further arranged on the housing (11).

5. The multi-airflow-cavity gas shut-off valve according to claim 1, wherein an overpressure reset unit (2) is arranged on the pipe wall of the air inlet end (38), the overpressure reset unit (2) comprises a main body (37) fixed on the valve body (6), an operating rod (36) is arranged in the main body (37), a key cap (35) is arranged above the operating rod (36), a spring connected with the main body (37) is arranged in the key cap (35), and a movable steel ball (3) is arranged in the air inlet end (38).

6. A multi-airflow-cavity gas shut-off valve according to claim 1, characterized in that the air inlet end (38) is provided with a connecting and fixing unit (1).