Intelligent gas safety valve

Abstract

The intelligent gas safety valve comprises a first valve seat, a second valve seat, a valve body and a driving assembly, the valve body is arranged in a valve cavity and divides the valve cavity into a transition cavity and a gas outlet cavity, the transition cavity communicates with a gas inlet channel, the gas outlet cavity communicates with a gas outlet channel, and the valve body is further provided with a valve port communicating the transition cavity and the gas outlet cavity; the driving assembly comprises a push rod and a diaphragm connected with the push rod, and the diaphragm can be driven by the push rod to move close to or away from one side of the valve port to open and close communication between the transition cavity and the air outlet cavity; wherein the transition cavity is arranged in the first seat body; through the design of the split type seat body, machining of a valve cavity formed after the valve body and the transition cavity are connected is facilitated, the valve body divides the valve cavity after being installed in the valve cavity, fuel gas can be retained in the transition cavity to disperse pressure in the valve cavity after entering from the gas inlet channel, and before entering the gas outlet channel, the fuel gas can be buffered through the gas outlet cavity, so that the service life of the fuel gas is prolonged. The impact of instantaneous opening pressure on the valve seat is reduced, and the service life of the whole safety valve is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of gas valves, and in particular to an intelligent gas safety valve. Background Art

[0002] Gas safety valves provide safety protection in gas systems. When the pressure in the gas pipeline is too high or too low, they can cut off the pipeline's connection to reduce the possibility of accidents. Traditional gas safety valves are essentially mechanical self-closing valves, which open and close by using the gas pressure within the valve body to act on the diaphragm, thereby driving the cam slider structure.

[0003] However, the mechanical self-closing valve has a relatively simple function and cannot meet the needs of modern users. As a result, smart gas valves have appeared on the market. For example, the Chinese invention patent with publication number CN105889616A discloses an "intelligent gas safety monitoring system and monitoring method", which can realize multi-functional detection of pressure, temperature, harmful gases, etc. of the gas pipeline, and realize data exchange with users through Internet of Things technology. However, since electronic components such as circuit boards need to be installed in the valve body, the gas pipeline design in the valve body is relatively compact, and the volume of the valve body's inlet cavity is small. After the valve core closes the pipeline, the accumulation of gas in the inlet cavity can easily cause excessive pressure in the inlet cavity. When the valve core opens, the pressure is released instantly. Long-term use can easily cause wear of the components in the safety valve, reducing its service life. Utility Model Content

[0004] In order to increase the service life of the safety valve, the present application provides an intelligent gas safety valve.

[0005] The intelligent gas safety valve provided in this application adopts the following technical solution:

[0006] An intelligent gas safety valve, comprising:

[0007] a first valve seat, the first valve seat comprising a first seat body and an air intake pipe connected to the first seat body, the air intake pipe having an air intake passage;

[0008] a second valve seat, the second valve seat comprising a second seat body and an air outlet pipe connected to the second seat body, the air outlet pipe having an air outlet passage, the first seat body and the second seat body being connected to form a valve cavity connecting the air inlet passage and the air outlet passage;

[0009] a valve body disposed in the valve cavity and dividing the valve cavity into a transition cavity and an air outlet cavity, wherein the transition cavity is connected to the air inlet channel, and the air outlet cavity is connected to the air outlet channel; and the valve body is further provided with a valve port connecting the transition cavity and the air outlet cavity; and

[0010] A drive assembly is mounted on the first base, the drive assembly including a push rod and a membrane connected to the push rod, the membrane being driven by the push rod to move toward or away from the valve port to open and close the connection between the ferry chamber and the outlet chamber;

[0011] Wherein, the transition cavity is placed in the first seat.

[0012] By adopting the above technical solution, firstly, the split seat body is convenient for processing the shape and volume of the valve cavity after the two are connected, and the valve body separates the valve cavity after being installed in the valve cavity, and the air inlet channel and the air outlet channel are not directly connected. The air inlet channel is connected to the transition cavity, and the air outlet channel is connected to the air outlet cavity, so that there is a certain buffer space during the air inlet and air outlet processes, especially when the valve port of the valve body is blocked and closed by the membrane, the gas enters the transition cavity through the air inlet channel. Since the transition cavity has a certain volume, the retention space of the gas after entering the air inlet end is increased, and the pressure in the valve when the safety valve is closed. At the same time, when the valve port is opened, the gas first enters the air outlet cavity and flows through the air outlet channel, realizing a slow flow effect, reducing the impact of the instantaneous opening pressure on the valve internal components, and improving the service life of the entire safety valve.

[0013] Preferably, the transition cavity is enclosed by the outer surface of the valve body.

[0014] By adopting the above technical solution, the volume of the valve body is reduced, so that the volume of the transition chamber can be further increased, and the surface pressure of the valve body is more uniform when the gas is retained in the transition chamber, thereby improving the service life of the valve body.

[0015] Preferably, the valve body is connected to the second seat body, and a first sealing member is provided between the end surface of the valve body and the second seat body.

[0016] By adopting the above technical solution, the first sealing member improves the sealing between the valve body and the second seat body, and reduces the possibility of conduction between the air outlet cavity and the transition cavity.

[0017] Preferably, the first seat body includes a snap ring extending outward from the end surface, and the second seat body is provided with a groove for the snap ring at the end surface, a second sealing member is provided in the groove, and the end of the snap ring abuts against the second sealing member.

[0018] By adopting the above technical solution, the second sealing member improves the sealing between the first base body and the second base body, so that the interior of the entire base body can be blocked from the outside world.

[0019] Preferably, the first seat body further includes a driving seat, the driving seat has a mounting opening communicating with the transition cavity, and the membrane is clamped in the mounting opening.

[0020] By adopting the above technical solution, the diaphragm is clamped in the installation port after being connected to the push rod, thereby improving the degree of limitation of the diaphragm; secondly, the drive seat is connected to the first seat body and can be processed and produced separately from the first seat body, thereby improving production efficiency.

[0021] Preferably, the membrane includes a plug and a corrugated compensation part connected to the plug, and one end of the push rod is connected to the plug; the drive seat is provided with an annular groove at the outer edge of the mounting port, and the corrugated compensation part includes a convex ring clamped in the annular groove.

[0022] By adopting the above technical solution, the convex ring is clamped in the ring groove, so that the outer edge of the entire membrane is further limited and can also play a sealing effect between the drive seat and the outside world. When the plug is driven by the push rod, the corrugated compensation part undergoes elastic deformation to help reset the plug.

[0023] Preferably, it also includes a pressure ring, which is connected to the installation port, and the pressure ring has a receiving groove and a guide hole connected to the receiving groove. One end of the push rod extends to one side of the receiving groove through the guide hole. The corrugated compensation part also includes a corrugated section, and the corrugated section is placed in the receiving groove. The end of the pressure ring abuts against the convex ring.

[0024] By adopting the above technical solution and installing the pressure ring, firstly, the sliding of the push rod in the guide hole improves the guidance of the plug movement. Secondly, the interference of the pressure ring with the convex ring limits the movement of the convex ring in the ring groove, better ensuring the fixation of the diaphragm to the installation port and improving the opening and closing stability of the entire safety valve.

[0025] Preferably, a third sealing member is provided between the pressure ring and the convex ring.

[0026] By adopting the above technical solution, the third seal serves as the second seal between the drive seat and the outside world to improve the sealing between the membrane and the drive seat and reduce the leakage of gas from the connection between the membrane and the installation port.

[0027] Preferably, one end of the air inlet pipe is connected to a threaded joint, and the threaded joint is rotatably connected to a butt nut.

[0028] By adopting the above technical solution, the butt nut is used as a connector for connecting to an external gas pipeline, which facilitates pipeline connection.

[0029] Preferably, it further comprises a shell, wherein the first valve seat and the second valve seat are both installed in the shell, a display panel is provided on the shell, and a battery module is detachably connected to the shell.

[0030] By adopting the above technical solution, the battery module can provide power for the electronic components in the safety valve, and a detachable structure is used to achieve quick disassembly between the battery module and the shell, which is convenient for overall maintenance operations.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. The split seat body design facilitates the processing of the valve cavity formed after the two are connected. After the valve body is installed in the valve cavity, the valve cavity is divided, so that the gas can be retained in the transition cavity after entering from the air inlet channel to disperse the pressure in the valve cavity. In addition, there is an outlet cavity for buffering before the gas enters the outlet channel, reducing the impact of instantaneous opening pressure on the valve seat and prolonging the service life of the entire safety valve.

[0033] 2. By opening a ring groove in the drive seat for the convex ring of the membrane, the stability of the membrane installation is improved while the sealing effect is achieved. Combined with the setting of the pressure ring and the third sealing member pressing against the convex ring, the installation of the membrane in the installation port is completely limited, and the sealing effect between the drive seat and the outside world is better improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a structural diagram of an intelligent gas safety valve;

[0035] Figure 2 It is a cross-sectional view of the intelligent gas safety valve;

[0036] Figure 3 This is an exploded diagram of the smart gas safety valve from one perspective;

[0037] Figure 4 This is a schematic diagram of the intelligent gas safety valve from another perspective;

[0038] Figure 5 It is a structural diagram of the valve body;

[0039] Figure 6 Schematic diagram of the installation between the battery module and the shell.

[0040] Explanation of Reference Numerals: 1. first valve seat; 11. first seat body; 111. transition chamber; 112. retaining ring; 12. air inlet pipe; 121. air inlet passage; 13. drive seat; 131. mounting port; 2. second valve seat; 21. second seat body; 211. retaining groove; 22. air outlet pipe; 221. air outlet passage; 3. valve body; 31. air outlet chamber; 32. valve port; 4. drive assembly; 41. push rod; 42. membrane; 421. plug; 422. Corrugated section; 423. Convex ring; 5. Threaded joint; 51. Threaded section; 52. Optical axis section; 53. Pressing section; 6. Butt nut; 61. Limiting ring; 7. First sealing member; 8. Second sealing member; 9. Pressing ring; 91. Guide hole; 92. Receiving groove; 10. Third sealing member; 20. Housing; 201. Slide groove; 30. Display panel; 40. Battery; 50. Retaining frame; 501. Mounting groove; 502. Block. DETAILED DESCRIPTION

[0041] The present application is further described in detail by the following Examples.

[0042] It is to be understood that where an element such as a layer, region or substrate is described as being "on" another element, it can be directly on the other element or intervening elements can also be present. Where an element such as a layer, region or substrate is described as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0044] Figure 1 With Figure 2 The structure of an intelligent gas safety valve is shown, which comprises a housing 20 and a first valve seat 1 and a second valve seat 2 installed in the housing 20. The housing 20 is provided with a display panel 30 on one side surface, which is used for displaying the working state of the safety valve.

[0045] In combination Figures 3 to 5 The first valve seat 1 comprises a first seat body 11 and an air inlet pipe 12. In this embodiment, the first seat body 11 and the air inlet pipe 12 are of an integrated structure. The air inlet pipe 12 has an air inlet passage 121. The first seat body 11 is provided with an opening on one side and has a groove with a certain depth. The air inlet passage 121 is in communication with the groove. The second valve seat 2 comprises a second seat body 21 and an air outlet pipe 22. In this embodiment, the second seat body 21 and the air outlet pipe 22 are also of an integrated structure. The air outlet pipe 22 has an air outlet passage 221. The first seat body 11 is connected with the second seat body 21, and the two form a valve cavity in communication with the air inlet passage 121 and the air outlet passage 221.

[0046] The intelligent gas safety valve further includes a valve body 3, which is connected to the second seat 21 via fasteners and is positioned within the valve cavity. The valve body 3 also divides the valve cavity into a transition cavity 111 and an air outlet cavity 31. The transition cavity 111 is positioned within the first seat 11, and the air outlet cavity 31 is formed within the valve body 3. The transition cavity 111 communicates with the air inlet passage 121, and the air outlet cavity 31 communicates with the air outlet passage 221. The valve body 3 further defines a valve port 32 connecting the transition cavity 111 and the air outlet cavity 31. The transition cavity 111 is enclosed on the outer surface of the valve body 3, and the cross-sectional area of ​​the transition cavity 111 is larger than the cross-sectional areas of the air inlet passage 121 and the air outlet passage 221. This allows for rapid diffusion of gas from the air inlet passage 121 into the transition cavity 111, reducing pressure concentration.

[0047] It should be noted that the valve port 32 is staggered with the air inlet channel 121 and the air outlet channel 221 so that the gas flow path is S-shaped to reduce the kinetic energy of the gas and reduce the impact on the valve internal components.

[0048] To improve the sealing performance of the connection between the first valve seat 1 and the second valve seat 2, a first sealing member 7 is provided between the valve body 3 and the second seat body 21. A retaining ring 112 extends outwardly from the end surface of the first seat body 11, and a retaining groove 211 is defined on the end surface of the second seat body 21. The retaining ring 112 engages with the retaining groove 211 to achieve the connection between the first valve seat 1 and the second valve seat 2. A second sealing member 8 is also provided within the retaining groove 211, with the end of the retaining ring 112 contacting the second sealing member 8. These two seals enhance the sealing performance between the two valve seats and the outside world.

[0049] The intelligent gas safety valve also includes a drive assembly 4. A drive seat 13 is integrally mounted on the first seat body 11. The drive seat 13 defines a mounting opening 131 that communicates with the transition chamber 111. The drive assembly 4 is disposed within the mounting opening 131. Furthermore, the drive assembly 4 includes a push rod 41 and a membrane 42 connected to the push rod 41. One end of the push rod 41 extends from the mounting opening 131 toward the valve port 32.

[0050] The membrane 42 includes a plug 421 and a corrugated compensation part connected to the plug 421. One end of the push rod 41 is connected to the plug 421. The plug 421 can be driven by the push rod 41 to move away from or close to one side of the valve port 32, thereby realizing the opening and closing of the valve port 32 and thus realizing the connection between the transition chamber 111 and the air outlet chamber 31.

[0051] An annular groove is also provided in the drive seat 13. The corrugated compensation portion includes a corrugated section 422 and a convex ring 423 connected to the corrugated section 422. The convex ring 423 is clamped in the annular groove to seal the connection between the transition chamber 111 and the outside of the drive seat 13. The corrugated section 422 provides the plug 421 with a certain elastic deformation capacity, so that the plug 421 provides a certain reset force when moving away from the valve port 32. The intelligent gas safety valve also includes a pressure ring 9 and a third sealing member 10. The pressure ring 9 is threadedly connected to the mounting port 131. The pressure ring 9 includes a guide hole 91 provided in the middle position and a receiving groove 92 connected to the guide hole 91. The push rod 41 is slidably connected to the guide hole 91. The corrugated section 422 is placed in the receiving groove 92 to limit the horizontal movement of the corrugated section 422. The third sealing member 10 contacts the protruding ring 423, and the end of the pressure ring 9 contacts the third sealing member 10, thereby further limiting and sealing the protruding ring 423 when installed in the annular groove. In this embodiment, the first sealing member 7, the second sealing member 8, and the third sealing member 10 are all rubber sealing rings.

[0052] The intelligent gas safety valve also includes a threaded joint 5 and a butt nut 6. The threaded joint 5 is threadedly connected to the air inlet pipe 12. The threaded joint 5 includes a threaded section 51, an optical axis section 52 and a pressing section 53 connected in sequence. The butt nut 6 has a limiting ring 61 rotatably connected to the optical axis section 52. The limiting ring 61 contacts the pressing section 53 to limit the axial movement of the butt nut 6. When connecting to an external gas pipeline, it only needs to be connected to the butt nut 6. The pipeline connection can be conveniently achieved by rotating the butt nut 6.

[0053] See Figure 6 The intelligent gas safety valve also includes a battery 40 module. The battery 40 module includes a retaining frame 50 and a plurality of batteries 40 installed on the retaining frame. The battery 40 in this embodiment is a dry battery 40. The retaining frame 50 is provided with a plurality of mounting grooves 501 for the battery 40 to be clamped. The two ends of the retaining frame 50 extend outward to form a clamping block 502. The shell 20 is provided with a slide groove 201 on the inner surface. The clamping block 502 is connected to the slide groove 201, and the battery 40 module and the shell 20 can be disassembled and assembled by sliding.

[0054] In this embodiment, the axial driving mode of the push rod can be an electromagnetic push rod or an electric cylinder push rod.

[0055] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An intelligent gas safety valve, characterized in that: include: A first valve seat (1), the first valve seat (1) comprising a first seat body (11) and an air intake pipe (12) connected to the first seat body (11), the air intake pipe (12) having an air intake passage (121); a second valve seat (2), the second valve seat (2) comprising a second seat body (21) and an air outlet pipe (22) connected to the second seat body (21), the air outlet pipe (22) having an air outlet channel (221), the first seat body (11) and the second seat body (21) being connected to form a valve cavity communicating with the air inlet channel (121) and the air outlet channel (221); A valve body (3) is disposed in the valve cavity and divides the valve cavity to form a transition cavity (111) and an air outlet cavity (31), wherein the transition cavity (111) is connected to the air inlet channel (121), and the air outlet cavity (31) is connected to the air outlet channel (221), and the valve body (3) is further provided with a valve port (32) connecting the transition cavity (111) and the air outlet cavity (31); and A drive assembly (4) is mounted on the first base (11), the drive assembly (4) comprising a push rod (41) and a membrane (42) connected to the push rod (41), the membrane (42) being driven by the push rod (41) to move toward or away from the valve port (32) to open and close the communication between the ferry chamber and the outlet chamber (31); Wherein, the transition cavity (111) is placed in the first seat body (11).

2. The intelligent gas safety valve according to claim 1, characterized in that: The transition chamber (111) is enclosed on the outer surface of the valve body (3).

3. The intelligent gas safety valve according to claim 1, characterized in that: The valve body (3) is connected to the second seat body (21), and a first sealing member (7) is provided between the end surface of the valve body (3) and the second seat body (21).

4. An intelligent gas safety valve according to claim 1 or 3, characterized in that: The first seat (11) includes a snap ring (112) extending outward from an end surface, and the second seat (21) is provided with a snap groove (211) at the end surface for the snap ring (112) to be secured thereto, a second sealing member (8) being provided in the snap groove (211), and an end portion of the snap ring (112) abutting against the second sealing member (8).

5. The intelligent gas safety valve according to claim 1, characterized in that: The first seat body (11) further comprises a driving seat (13), wherein the driving seat (13) has a mounting opening (131) communicating with the transition cavity (111), and the membrane (42) is clamped in the mounting opening (131).

6. The intelligent gas safety valve according to claim 5, characterized in that: The membrane (42) includes a plug (421) and a corrugated compensation portion connected to the plug (421), and one end of the push rod (41) is connected to the plug (421); the drive seat (13) is provided with an annular groove at the outer edge of the mounting opening (131), and the corrugated compensation portion includes a convex ring (423) clamped in the annular groove.

7. The intelligent gas safety valve according to claim 6, characterized in that: The device further comprises a pressure ring (9), the pressure ring (9) being connected to the mounting opening (131), the pressure ring (9) having a receiving groove (92) and a guide hole (91) communicating with the receiving groove (92), one end of the push rod (41) extending toward one side of the receiving groove (92) through the guide hole (91), the corrugated compensation portion further comprising a corrugated section (422), the corrugated section (422) being disposed in the receiving groove (92), and the end of the pressure ring (9) abutting against the convex ring (423).

8. The intelligent gas safety valve according to claim 7, characterized in that: A third sealing member (10) is also provided between the pressure ring (9) and the convex ring (423).

9. The intelligent gas safety valve according to claim 1, characterized in that: One end of the air inlet pipe (12) is connected to a threaded joint (5), and the threaded joint (5) is rotatably connected to a butt nut (6).

10. The intelligent gas safety valve according to claim 1, characterized in that: It also includes a shell (20), wherein the first valve seat (1) and the second valve seat (2) are both installed in the shell (20), a display panel (30) is provided on the shell (20), and a battery (40) module is detachably connected to the shell (20).

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