Gas valve

Abstract

The utility model discloses a gas valve, which comprises a valve body, a gas valve core, a gas valve core, a gas valve core, a gas valve core and a gas valve core, the flow detection device is mounted in the mounting channel and extends to the gas channel, and the flow detection device is provided with a power connection column extending to the outside of the mounting channel; the sealing assembly comprises a sealing piece and a gland, the sealing piece is installed in the installation channel and located on the outer side of the flow detection device, the sealing piece is in interference fit with the inner wall of the installation channel, the gland detachably covers the outer end of the installation channel and is provided with an abutting portion capable of abutting against the outer surface of the sealing piece, and the power connection column penetrates through the sealing piece and the gland. And the power connection column is in interference fit with the sealing element. Therefore, the installation channel can be better sealed, when the flow detection device needs to be maintained or replaced, only the gland and the sealing piece need to be detached from the installation channel one by one, and replacement and maintenance of the flow detection device are more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of valve tools, in particular to a gas valve. Background Art

[0002] Existing gas valves are usually equipped with flow meters to detect the gas flow in the gas passage of the gas valve. The flow meter includes a probe for detecting the gas flow and a display meter for displaying the gas flow. The display meter is installed on the valve body of the gas valve, and the probe extends into the gas passage of the valve body. When the external display meter is damaged or the probe extending into the gas passage is damaged, the entire flow meter usually needs to be removed for repair and replacement. In order to avoid gas leakage and improve the sealing performance of the gas valve, the flow meter and the valve body are generally sealed by gluing. This sealing method makes the disassembly and repair of the flow meter very inconvenient. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a gas valve with good sealing performance and can facilitate the disassembly and maintenance of the flow detection device.

[0004] According to the embodiment of the utility model, the gas valve includes: a valve body, which is provided with a gas channel and an installation channel connected to the gas channel; a flow detection device, which is installed in the installation channel and extends to the gas channel, and the flow detection device is provided with a power connection post extending to the outside of the installation channel; a sealing assembly, including a sealing member and a pressure cover, the sealing member is installed in the installation channel and is located on the outside of the flow detection device, the sealing member is interference fit with the inner wall of the installation channel, the pressure cover is detachably covered on the outer end of the installation channel, the pressure cover has an abutment portion that can abut against the outer surface of the sealing member, the power connection post is penetrated by the sealing member and the pressure cover, and the power connection post is interference fit with the sealing member.

[0005] The gas valve according to the embodiment of the utility model has at least the following beneficial effects:

[0006] By setting an installation channel connected to the gas channel, the flow detection device is installed in the installation channel and extends to the gas channel. The flow detection device is also provided with an electrical connection post extending to the outside of the installation channel, so that the flow detection device can be connected to external power supplies, displays and other electrical components through the electrical connection post, so that the gas flow in the gas channel can be detected. By setting a sealing component, the seal is installed in the installation channel and located on the outside of the flow detection device, so that the flow detection device can be sealed and installed in the installation channel. The pressure cover is detachably covered on the outer end of the installation channel and has an abutment portion that can abut against the outer surface of the seal, thereby reducing the risk of the seal escaping from the outlet of the installation channel, and then the installation channel can be better sealed, reducing the risk of gas leakage from the outlet of the installation channel. When the flow detection device needs to be repaired or replaced, it is only necessary to remove the pressure cover and the seal from the installation channel one by one. The operation is simple, making the replacement and maintenance of the flow detection device more convenient.

[0007] According to some embodiments of the utility model, the pressure cover also includes a cover body, the abutment portion is installed in the installation channel and is located on the outside of the seal, the power post is passed through the abutment portion, the cover body is sleeved on the outer peripheral wall of the installation channel, the cover body has an extension portion extending inward to abut against the abutment portion, and the extension portion is wrapped around the outside of the power post.

[0008] According to some embodiments of the present invention, at least one set of positioning structures is provided between the abutting portion and the peripheral wall of the installation channel.

[0009] According to some embodiments of the utility model, the positioning structure includes a first positioning portion arranged on the abutment portion and a second positioning portion arranged between the outer end periphery of the installation channel, one of the first positioning portion and the second positioning portion is provided with a clamping portion, and the other is provided with a clamping groove corresponding to the clamping portion, and the clamping portion can be clamped into the corresponding clamping groove.

[0010] According to some embodiments of the present invention, the outer peripheral wall of the seal has an annular convex strip arranged along the circumference of the seal.

[0011] According to some embodiments of the utility model, the installation channel passes through the side wall of the gas channel and forms a connecting port connected to the gas channel. A mounting seat is installed in the gas channel. The mounting seat is provided with a gas passage connected to the gas channel. The outer peripheral wall of the mounting seat is provided with a plug hole arranged toward the installation channel. The flow detection device has a detection portion that is plugged into the plug hole and extends downward to the gas passage.

[0012] According to some embodiments of the utility model, the gas channel includes an air outlet channel and a gas cavity connected to the air inlet end of the air outlet channel, the mounting seat is located in the gas cavity and one end is plugged into the air inlet end of the air outlet channel, and the mounting channel is connected to the gas cavity.

[0013] According to some embodiments of the utility model, a connecting plate connected to the inner wall of the air passage is provided in the air passage, the connecting plate is provided with a plug-in channel connected to the plug-in hole, the detection part is inserted in the plug-in channel, and the side wall of the connecting plate is provided with at least one detection port connecting the plug-in channel and the air passage.

[0014] According to some embodiments of the utility model, the air passage includes an inner channel and an outer channel arranged around the outer circumference of the inner channel, both ends of the connecting plate are connected to the inner wall of the outer channel, and the connecting plate passes through the inner channel; the number of the detection ports is at least two, at least one of the detection ports connects the plug-in channel and the inner channel, and at least one of the detection ports connects the plug-in channel and the outer channel.

[0015] According to some embodiments of the present invention, a filter is installed at one end of the air passage away from the air outlet passage.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 A schematic diagram of a gas valve according to an embodiment of the present utility model;

[0019] Figure 2 It is a cross-sectional schematic diagram of a gas valve according to an embodiment of the utility model;

[0020] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0021] Figure 4 A schematic diagram of a sealing member according to an embodiment of the present utility model;

[0022] Figure 5 A schematic diagram of a flow detection device according to an embodiment of the present utility model;

[0023] Figure 6 Another schematic diagram of a flow detection device according to an embodiment of the utility model;

[0024] Figure 7 It is a partial schematic diagram of a gas valve according to an embodiment of the utility model;

[0025] Figure 8 for Figure 7 Exploded diagram of the gas valve;

[0026] Fig. 9 It is a cross-sectional schematic diagram of a gas valve according to another embodiment of the utility model;

[0027] Fig.10 for Fig. 9 Another cross-sectional schematic diagram of a gas valve;

[0028] Fig.11 A schematic diagram of a mounting base according to an embodiment of the present utility model;

[0029] Fig.12 It is a cross-sectional schematic diagram of a mounting base according to an embodiment of the utility model;

[0030] Fig.13 Another cross-sectional schematic diagram of a mounting base according to an embodiment of the present invention.

[0031] Reference numerals:

[0032] Valve body 100, gas channel 110, gas outlet channel 111, gas chamber 112, installation channel 120, communication port 121;

[0033] Flow detection device 200, detection unit 210, power connection post 220, mounting block 230;

[0034] The sealing member 300 , the annular convex strip 301 , the cover body 310 , the extending portion 311 , the abutting portion 320 , the clamping portion 321 , and the clamping groove 322 ;

[0035] The mounting seat 400 , the air passage 410 , the inner passage 411 , the outer passage 412 , the plug hole 420 , the connecting plate 430 , the plug channel 431 , the detection port 432 , the step portion 433 , and the filter 440 . DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0040] Reference Figures 1 to 8 In one embodiment of the utility model, a gas valve is provided, comprising a valve body 100, a flow detection device 200 and a sealing assembly. The valve body 100 is provided with a gas channel 110 and a mounting channel 120 connected to the gas channel 110. The flow detection device 200 is installed in the mounting channel 120 and extends to the gas channel 110. The flow detection device 200 is provided with a power connection post 220 extending to the outside of the mounting channel 120. The sealing assembly comprises a sealing member 300 and a gland. The sealing member 300 is installed in the mounting channel 120 and is located on the outside of the flow detection device 200. The sealing member 300 is interference fit with the inner wall of the mounting channel 120. The gland is detachably covered at the outer end of the mounting channel 120. The gland has an abutment portion 320 that can abut against the outer surface of the sealing member 300. The power connection post 220 is penetrated by the sealing member 300 and the gland, and the power connection post 220 is interference fit with the sealing member 300.

[0041] In the above structure, by setting an installation channel 120 connected to the gas channel 110, the flow detection device 200 is installed in the installation channel 120 and extends to the gas channel 110. The flow detection device 200 is also provided with a power connection pole 220 extending to the outside of the installation channel 120. Thus, the flow detection device 200 can be connected to external electrical components such as an external power supply and a display through the power connection pole 220, so that the gas flow in the gas channel 110 can be detected. By setting up a sealing assembly, the seal 300 is installed in the installation channel 120 and is located on the outside of the flow detection device 200. The power pole 220 is passed through the seal 300 and is interference fit with the seal 300, thereby the flow detection device 200 can be sealed and installed in the installation channel 120. The pressure cover is detachably covered on the outer end of the installation channel 120 and has an abutment portion 320 that can abut against the outer surface of the seal 300, thereby reducing the risk of the seal 300 escaping from the outlet of the installation channel 120, and thus the installation channel 120 can be better sealed, reducing the risk of gas leakage from the outlet of the installation channel 120. When the flow detection device 200 needs to be repaired or replaced, it is only necessary to remove the pressure cover and the seal 300 from the installation channel 120 one by one. The operation is simple, making the replacement and repair of the flow detection device 200 more convenient.

[0042] In addition, by adopting the gas valve of the embodiment of the utility model, when it is necessary to detect the gas flow in the gas channel 110, it is sufficient to directly connect the power through the power connection post 220 of the flow detection device 200. The flow detection device 200 and the display for displaying the gas flow are separately arranged. Therefore, when the display is damaged, there is no need to connect the flow detection device 200 in the installation channel 120 for replacement, which greatly saves the maintenance cost of the gas valve.

[0043] It is understandable that in the above structure, the flow detection device 200 is electrically connected to the external electrical element through the electrical connection post 220 extending to the outside of the installation channel 120, which can facilitate the sealing of the installation channel 120 by the sealing component and also facilitate the sealed connection between the electrical connection post 220 and the sealing member 300. If an electrical wire is directly used, the sealed connection between the electrical wire and the sealing member 300 will be very inconvenient, and it will also be inconvenient to install the sealing component.

[0044] It can be understood that the gas valve in the embodiment of the present invention may be a pressure reducing valve, or a proportional valve or other gas valves, which is not specifically limited in the present invention.

[0045] It can be understood that the flow detection device 200 may not specifically be a flow sensor.

[0046] Reference Figure 4In some embodiments, the outer peripheral wall of the seal 300 has an annular convex strip 301 arranged along the circumference of the seal 300. When the seal 300 is installed, the annular convex strip 301 is easily deformed so that the installation of the seal 300 can be more convenient and labor-saving.

[0047] It is understandable that, referring to Figure 4 , the number of the annular ridges 301 is two, and the two annular ridges 301 are arranged in sequence along the thickness direction of the seal 300. Of course, the number of the annular ridges 301 can be one, three or more than two, and when the number of the annular ridges 301 is two or more, all the annular ridges 301 are arranged in sequence along the thickness direction of the seal 300.

[0048] It is understandable that the sealing member 300 may be specifically a rubber member. In addition, the sealing member 300 may also be a silicone member or other flexible members, which is not specifically limited in the present invention.

[0049] Reference Figures 1 to 8 In some embodiments, there are multiple power poles 220. Specifically, the multiple power poles 220 may include a power supply input terminal for connecting to a power supply, and may also include a signal output terminal for outputting a gas flow signal, etc., which is not specifically limited by the present invention and can be set according to the specific type of the flow detection device 200.

[0050] Reference Figures 1 to 8 In some embodiments, a mounting block 230 is provided on the flow detection device 200, and a power pole 220 is installed on the mounting block 230. The power pole 220 has an elbow for electrically connecting to the flow detection device 200. This structure can facilitate extending the conductive pole on the flow detection device 200 along the axial direction of the mounting channel 120 to the outside of the mounting channel 120.

[0051] Reference Figures 1 to 8 In some embodiments, the pressure cover also includes a cover body 310, an abutment portion 320 is installed in the installation channel 120 and is located on the outside of the sealing member 300, the power post 220 is passed through the abutment portion 320, the cover body 310 is sleeved on the outer peripheral wall of the installation channel 120, and the cover body 310 has an extension portion 311 extending inwardly to abut against the abutment portion 320, and the extension portion 311 is wrapped around the outside of the power post 220.

[0052] By adopting the above structure, the abutting portion 320 is a pressure plate structure, which can well press the sealing member 300 against the inside of the installation channel 120, and the extension portion 311 of the cover body 310 can further press the abutting portion 320, thereby reducing the risk of the sealing member 300 escaping from the outlet of the installation channel 120, and thus better sealing the installation channel 120, reducing the risk of gas leakage from the outlet of the installation channel 120. When the flow detection device 200 in the installation channel 120 needs to be replaced or repaired, it is only necessary to remove the cover body 310, the abutting portion 320 and the sealing member 300 from the installation channel 120 in sequence, which has a simple structure and is easy to operate, and is convenient for the replacement and repair of the flow detection device 200.

[0053] It is understandable that the cover body 310 is sleeved on the outer peripheral wall of the installation channel 120. Specifically, the cover body 310 and the outer peripheral wall of the installation channel 120 can be threadedly connected, or can be snap-fitted or connected in other detachable ways, which is not specifically limited in the present invention.

[0054] It is understandable that, referring to Figures 1 to 8 In some embodiments, the extension portion 311 is annular, and the connecting post 220 is located inside the extension portion 311, so that the annular extension portion 311 can give way to the connecting post 220, so that the connecting post 220 can smoothly extend to the outside of the installation channel 120. In addition, this structure can also make the production and processing of the cover body 310 more convenient and simple. Of course, in addition to being set to a ring shape, the extension portion 311 can also include a plurality of folded edges arranged along the circumference of the cover body 310, and all the folded edges are sequentially arranged around the outer circumference of the connecting post 220.

[0055] It is understandable that when there are multiple connecting posts 220 , the extending portion 311 being disposed around the outer side of the connecting post 220 specifically means that the extending portion 311 is disposed around the outer circumference of all the connecting posts 220 .

[0056] Reference Figure 8 In some embodiments, two sets of positioning structures are provided between the abutting portion 320 and the peripheral wall of the mounting channel 120 .

[0057] By adopting the above structure, the setting of the positioning structure can facilitate the installation of the abutment part 320, so that the through hole on the abutment part 320 can correspond to the power connection post 220 of the flow detection device 200, so that the power connection post 220 of the flow detection device 200 can be smoothly inserted into the abutment part 320.

[0058] It can be understood that the number of the above positioning structures is two groups, which is only for Fig. 9As an exemplary illustration, the number of the positioning structures may be not only two groups, but also one group, three groups, four groups or more groups, and the present invention does not make any specific limitation on this.

[0059] Reference Figure 8 In some embodiments, the positioning structure includes a first positioning portion provided on the abutting portion 320 and a second positioning portion provided between the outer end periphery of the mounting channel 120, the first positioning portion is provided with a clamping portion 321, and the second positioning portion is provided with a clamping groove 322 corresponding to the clamping portion 321, and the clamping portion 321 can be clamped into the corresponding clamping groove 322.

[0060] In the above structure, by setting the positioning structure as a clamping portion 321 and a clamping groove 322 that can be clamped with each other, it is not only easy to process the first positioning portion and the second positioning portion, but also easy to position and install the abutting portion 320 and the installation channel 120.

[0061] It can be understood that, in some embodiments, in addition to providing the snap-fitting portion 321 on the first positioning portion and the snap-fitting slot 322 on the second positioning portion, in some embodiments, the snap-fitting portion 321 can also be provided on the second positioning portion and the snap-fitting slot 322 can be provided on the first positioning portion. The utility model does not make any specific limitation on this. It is only necessary that one of the first positioning portion and the second positioning portion is provided with the snap-fitting portion 321 and the other is provided with the snap-fitting portion 321. The snap-fitting portion 321 corresponds to the snap-fitting portion 321.

[0062] Reference Figures 9 to 13 In some embodiments, the installation channel 120 penetrates the side wall of the gas channel 110 and forms a connecting port 121 connected to the gas channel 110. A mounting seat 400 is installed in the gas channel 110. The mounting seat 400 is provided with a gas passage 410 connected to the gas channel 110. The outer peripheral wall of the mounting seat 400 is provided with a plug hole 420 arranged toward the installation channel 120. The flow detection device 200 has a detection portion 210 that is plugged into the plug hole 420 and extends downward to the gas passage 410.

[0063] By adopting the above structure, the installation channel 120 can be directly processed from the side wall of the valve body 100 and extended to communicate with the gas channel 110 during processing, thereby making the processing of the installation channel 120 more convenient and making the processing and molding of the valve body 100 simpler and more convenient. In addition, by adopting the above structure, it is not necessary to set a mounting structure for mounting and fixing the flow detection device 200 in the installation channel 120. When installing the flow detection device 200, it is only necessary to install the mounting seat 400 in the gas channel 110, and then insert the flow detection device 200 from the installation channel 120 inward so that the detection part 210 is inserted into the plug interface of the mounting seat 400. The structure is simple and easy to install.

[0064] Reference Figures 9 to 13 In some embodiments, the gas channel 110 includes an outlet channel 111 and a gas chamber 112 connected to the air inlet end of the outlet channel 111 . The mounting seat 400 is located in the gas chamber 112 and one end is plugged into the air inlet end of the outlet channel 111 . The mounting channel 120 is connected to the gas chamber 112 .

[0065] By adopting the above structure, it is possible to detect the gas flow at the gas outlet channel 111 easily.

[0066] Reference Figures 9 to 13 In some embodiments, the valve body 100 includes a detachably connected upper shell and a lower shell, the gas outlet channel 111 and the installation channel 120 are both opened in the upper shell, and the gas chamber 112 is formed by the upper shell and the lower shell. Therefore, during installation, one end of the mounting seat 400 can be plugged into the gas inlet end of the gas outlet channel 111, and then the upper shell and the lower shell are installed together, which can facilitate the installation of the mounting seat 400.

[0067] Reference Figures 1 to 13 In some embodiments, a connecting plate 430 connected to the inner wall of the air passage 410 is provided in the air passage 410, and the connecting plate 430 is provided with a plug-in channel 431 connected to the plug-in hole 420, the detection unit 210 is inserted into the plug-in channel 431, and the side wall of the connecting plate 430 is provided with at least one detection port 432 connecting the plug-in channel 431 and the air passage 410.

[0068] In the above structure, the setting of the connecting plate 430 can facilitate the installation of the flow monitoring device, and the detection part 210 of the flow detection device 200 can be plugged into the plug-in channel 431 of the installation plate, so that the installation of the flow detection device 200 is more firm and stable. The opening of the detection port 432 can facilitate the detection device to detect the gas flow in the gas channel 410.

[0069] Reference Figures 9 to 13 In some embodiments, the inner wall of the plug-in channel 431 is provided with a step portion 433 , and the flow detection device 200 can abut against the step portion 433 , thereby confining the flow detection device 200 within the plug-in channel 431 .

[0070] Reference Figures 9 to 13 In some embodiments, the air passage 410 includes an inner channel 411 and an outer channel 412 arranged around the outer circumference of the inner channel 411, both ends of the connecting plate 430 are connected to the inner wall of the outer channel 412, and the connecting plate 430 passes through the inner channel 411; the number of the detection ports 432 is two, one detection port 432 connects the plug-in channel 431 and the inner channel 411, and the other detection port 432 connects the plug-in channel 431 and the outer channel 412.

[0071] By adopting the above structure, the connection setting of the connecting plate 430 can be made more firm and stable. One detection port 432 connects the plug-in channel 431 and the inner channel 411, and one detection port 432 connects the plug-in channel 431 and the outer channel 412. Therefore, the gas flow of the inner channel 411 and the outer channel 412 can be detected at the same time, making the detection of the gas flow more accurate.

[0072] It is understandable that the number of the above-mentioned detection ports 432 is two, which is only for Figures 9 to 13 In addition, the number of the detection port 432 for connecting the plug channel 431 and the inner channel 411 may be one, two, three or more, and the number of the detection port 432 for connecting the plug channel 431 and the outer channel 412 may be one, two, three or more. The utility model does not make any specific limitation on this. It is only required that the number of the detection ports 432 is at least two, at least one detection port 432 connects the plug channel 431 and the inner channel 411, and at least one detection port 432 connects the plug channel 431 and the outer channel 412.

[0073] Reference Figures 9 to 13 In some embodiments, the mounting base 400 is an integrated structure. Specifically, the peripheral wall of the inner channel 411, the outer peripheral wall of the outer channel 412 and the connecting plate 430 are an integrated structure, which can facilitate the production and processing of the mounting base 400, while also saving the number of parts of the gas valve, making the assembly of the gas valve simpler and more convenient.

[0074] Reference Fig. 9 In some embodiments, a filter screen 440 is installed at one end of the air passage 410 away from the air outlet passage 111 .

[0075] In the above structure, the filter 440 can filter the gas entering the gas outlet channel 111 to prevent impurities from entering the gas outlet channel 111 and flowing out from the gas outlet channel 111 to the gas appliance.

[0076] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A gas valve, characterized in that: include: A valve body (100) is provided with a gas passage (110) and a mounting passage (120) connected to the gas passage (110); A flow detection device (200) is installed in the installation channel (120) and extends to the gas channel (110), wherein the flow detection device (200) is provided with an electrical connection pole (220) extending to the outside of the installation channel (120); A sealing assembly comprises a sealing member (300) and a pressure cover, wherein the sealing member (300) is installed in the installation channel (120) and is located outside the flow detection device (200), the sealing member (300) is interference-fitted with the inner wall of the installation channel (120), the pressure cover is detachably covered on the outer end of the installation channel (120), the pressure cover has an abutment portion capable of abutting against the outer surface of the sealing member (300), the power connection post (220) is passed through the sealing member (300) and the pressure cover, and the power connection post (220) is interference-fitted with the sealing member (300).

2. The gas valve according to claim 1, characterized in that: The gland further comprises a cover body (310), the abutment portion is installed in the installation channel (120) and is located outside the sealing member (300), the power connection post (220) is passed through the abutment portion (320), the cover body (310) is sleeved on the outer peripheral wall of the installation channel (120), the cover body (310) has an extension portion (311) extending inwardly to abut against the abutment portion (320), and the extension portion (311) is arranged around the outside of the power connection post (220).

3. The gas valve according to claim 2, characterized in that: At least one set of positioning structures is provided between the abutting portion (320) and the peripheral wall of the installation channel (120).

4. The gas valve according to claim 3, characterized in that: The positioning structure comprises a first positioning portion provided on the abutting portion (320) and a second positioning portion provided between the outer end periphery of the mounting channel (120), one of the first positioning portion and the second positioning portion being provided with a clamping portion (321), and the other being provided with a clamping groove (322) corresponding to the clamping portion, and the clamping portion (321) being capable of being clamped into the corresponding clamping groove (322).

5. The gas valve according to claim 1, characterized in that: The outer peripheral wall of the sealing member (300) has an annular convex strip (301) arranged along the circumference of the sealing member (300).

6. The gas valve according to claim 1, characterized in that: The installation channel (120) penetrates the side wall of the gas channel (110) and forms a communication port (121) connected to the gas channel (110); a mounting seat (400) is installed in the gas channel (110); the mounting seat (400) is provided with a gas passage (410) connected to the gas channel (110); an outer peripheral wall of the mounting seat (400) is provided with a plug hole (420) arranged toward the installation channel (120); and the flow detection device (200) has a detection portion (210) plugged into the plug hole (420) and extending downward to the gas passage (410).

7. The gas valve according to claim 6, characterized in that: The gas channel (110) comprises an outlet channel (111) and a gas cavity (112) connected to an air inlet end of the outlet channel (111); the mounting seat (400) is located in the gas cavity (112) and one end of the mounting seat (400) is plugged into the air inlet end of the outlet channel (111); and the mounting channel (120) is connected to the gas cavity (112).

8. The gas valve according to claim 6, characterized in that: A connecting plate (430) connected to the inner wall of the air passage (410) is arranged in the air passage (410); the connecting plate (430) is provided with a plug-in channel (431) connected to the plug-in hole (420); the detection unit (210) is inserted into the plug-in channel (431); and the side wall of the connecting plate (430) is provided with at least one detection port (432) connecting the plug-in channel (431) and the air passage (410).

9. The gas valve according to claim 8, characterized in that: The air passage (410) comprises an inner channel (411) and an outer channel (412) arranged around the outer circumference of the inner channel (411), both ends of the connecting plate (430) are connected to the inner wall of the outer channel (412), and the connecting plate (430) passes through the inner channel (411); The number of the detection ports (432) is at least two, at least one of the detection ports (432) is connected to the plugging channel (431) and the inner channel (411), and at least one of the detection ports (432) is connected to the plugging channel (431) and the outer channel (412).

10. The gas valve according to claim 7, characterized in that: A filter screen (440) is installed at one end of the air passage (410) away from the air outlet passage (111).

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