CN222351579U - Gas valve - Google Patents

Abstract

The utility model discloses a gas valve which comprises a valve body, a flow detection device and a sealing assembly, wherein the valve body is provided with a gas channel and a mounting channel which are communicated with each other, the flow detection device is arranged in the mounting channel and extends to the gas channel, 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 element and a gland, the sealing element is arranged in the mounting channel and is positioned at the outer side of the flow detection device, the sealing element is in interference fit with the inner wall of the mounting channel, the gland is detachably arranged at the outer end of the mounting channel, the gland is provided with an abutting part capable of abutting against the outer surface of the sealing element, and the power connection column penetrates through the sealing element and the gland and is in interference fit with the sealing element. From this can be better seal the installation passageway, when need maintain or change flow detection device, only need with gland and sealing member follow installation passageway one by one dismantle can for flow detection device's change and maintenance are more convenient.

Description

Gas valve

Technical Field

The utility model relates to the technical field of valves, in particular to a gas valve.

Background

The existing gas valve is generally provided with a flow meter for detecting the gas flow in a gas channel of the gas valve, the flow meter comprises a probe for detecting the gas flow and a display meter for displaying the gas flow, the display meter is arranged on a valve body of the gas valve, and the probe extends into the gas channel of the valve body. When the external display meter is damaged or the probe extending into the gas channel is damaged, the whole flow meter is usually required to be detached for maintenance and replacement, and in order to avoid gas leakage, the sealing performance of the gas valve is improved, the flow meter and the valve body are generally sealed in a gluing mode, and the sealing mode causes inconvenience in the disassembly and maintenance of the flow meter.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the gas valve which has good sealing performance and can facilitate the disassembly and maintenance of the flow detection device.

The gas valve comprises a valve body, a flow detection device and a sealing assembly, wherein the valve body is provided with a gas channel and a mounting channel communicated with the gas channel, the flow detection device is arranged in the mounting channel and extends to the gas channel, 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 element and a gland, the sealing element is arranged in the mounting channel and is positioned at the outer side of the flow detection device, the sealing element is in interference fit with the inner wall of the mounting channel, the gland is detachably covered at the outer end of the mounting channel, the gland is provided with an abutting part capable of abutting against the outer surface of the sealing element, and the power connection column penetrates through the sealing element and the gland and is in interference fit with the sealing element.

The gas valve provided by the embodiment of the utility model has at least the following beneficial effects:

Through setting up the installation passageway that is linked together with the gas passageway, install flow detection device in the installation passageway and extend to the gas passageway, flow detection device still is provided with the electric pole that connects that extends to the installation passageway outside, from this flow detection device can connect outside power, electric elements such as display through the electric pole that connects to can detect the gas flow in the gas passageway. Through setting up seal assembly, the sealing member is installed in the installation passageway and is located flow detection device's outside, from this can with flow detection device sealing installation in the installation passageway, gland detachably lid is located the outer end of installation passageway and has the butt portion that can deviate from with the sealing member surface looks butt, from this can reduce the risk that the sealing member deviate from the export of installation passageway, and then can be better seal the installation passageway, reduce the gas and take place the risk of leaking from the export of installation passageway, when needs to maintain or change flow detection device, only need with gland and sealing member follow installation passageway one by one dismantle can, easy operation for flow detection device's change and maintenance are more convenient.

According to some embodiments of the utility model, the gland further comprises a cover body, the abutting portion is installed in the installation channel and located on the outer side of the sealing piece, the electric connection column penetrates through the abutting portion, the cover body is sleeved on the outer peripheral wall of the installation channel, the cover body is provided with an extending portion which extends inwards to abut against the abutting portion, and the extending portion is wound on the outer side of the electric connection column.

According to some embodiments of the utility model, at least one set of locating structures is provided between the abutment and the peripheral wall of the mounting channel.

According to some embodiments of the utility model, the positioning structure includes a first positioning portion disposed between the abutting portion and a second positioning portion disposed between the outer end periphery of the mounting channel, one of the first positioning portion and the second positioning portion is provided with a clamping portion, and the other one is provided with a clamping groove corresponding to the clamping portion, and the clamping portion can be clamped into the corresponding clamping groove.

According to some embodiments of the utility model, the peripheral wall of the seal has an annular bead arranged along the circumference of the seal.

According to some embodiments of the present utility model, the installation channel penetrates through a side wall of the gas channel and forms a communication port communicated with the gas channel, an installation seat is installed in the gas channel, the installation seat is provided with a gas passing channel communicated with the gas channel, an outer peripheral wall of the installation seat is provided with a plugging hole arranged towards the installation channel, and the flow detection device is provided with a detection part plugged in the plugging hole and extending downwards to the gas passing channel.

According to some embodiments of the utility model, the gas channel comprises a gas outlet channel and a gas cavity communicated with the gas inlet end of the gas outlet channel, the mounting seat is positioned in the gas cavity, one end of the mounting seat is inserted into the gas inlet end of the gas outlet channel, and the mounting channel is communicated with the gas cavity.

According to some embodiments of the utility model, a connecting plate connected with the inner wall of the gas passing channel is arranged in the gas passing channel, a plugging channel communicated with the plugging hole is formed in the connecting plate, the detection part is plugged in the plugging channel, and at least one detection port communicated with the plugging channel and the gas passing channel is formed in the side wall of the connecting plate.

According to some embodiments of the utility model, the gas passing channel comprises an inner channel and an outer channel wound on the periphery of the inner channel, two ends of the connecting plate are connected to the inner wall of the outer channel, the connecting plate penetrates through the inner channel, the number of the detection ports is at least two, at least one detection port is communicated with the inserting channel and the inner channel, and at least one detection port is communicated with the inserting channel and the outer channel.

According to some embodiments of the utility model, a filter screen is mounted at an end of the overgas channel facing away from the gas outlet channel.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic illustration of a gas valve according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a gas valve according to an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of FIG. 2 at A;

FIG. 4 is a schematic view of a seal according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a flow detection device according to an embodiment of the utility model;

FIG. 6 is another schematic diagram of a flow detection device according to an embodiment of the present utility model;

FIG. 7 is a partial schematic view of a gas valve according to an embodiment of the present utility model;

FIG. 8 is an exploded schematic view of the gas valve of FIG. 7;

FIG. 9 is a schematic cross-sectional view of a gas valve according to another embodiment of the present utility model;

FIG. 10 is another cross-sectional schematic view of the gas valve of FIG. 9;

FIG. 11 is a schematic view of a mounting base according to an embodiment of the utility model;

FIG. 12 is a schematic cross-sectional view of a mounting base according to an embodiment of the utility model;

Fig. 13 is another schematic cross-sectional view of a mounting base according to an embodiment of the utility model.

Reference numerals:

Valve body 100, gas passage 110, gas outlet passage 111, gas chamber 112, mounting passage 120, and communication port 121;

Flow rate detection device 200, detection unit 210, power post 220, and mounting block 230;

seal 300, annular bead 301, lid 310, extension 311, abutment 320, engagement 321, and groove 322;

Mounting seat 400, gas passing channel 410, inner channel 411, outer channel 412, plug hole 420, connecting plate 430, plug channel 431, detection port 432, step 433, and filter screen 440.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 to 8, an embodiment of the present utility model provides a gas valve, which includes a valve body 100, a flow rate detecting device 200, and a sealing assembly. The valve body 100 is provided with a gas passage 110 and a mounting passage 120 communicating with the gas passage 110. The flow rate detection device 200 is installed in the installation channel 120 and extends to the gas channel 110, and the flow rate detection device 200 is provided with a power receiving post 220 extending to the outside of the installation channel 120. The seal assembly comprises a seal 300 and a gland, wherein the seal 300 is installed in the installation channel 120 and is positioned at the outer side of the flow detection device 200, the seal 300 is in interference fit with the inner wall of the installation channel 120, the gland is detachably covered at the outer end of the installation channel 120, the gland is provided with an abutting part 320 which can be abutted with the outer surface of the seal 300, the electric connection column 220 penetrates through the seal 300 and the gland, and the electric connection column 220 is in interference fit with the seal 300.

In the above-described configuration, by providing the installation duct 120 communicating with the gas duct 110, the flow rate detection device 200 is installed in the installation duct 120 and extends to the gas duct 110, and the flow rate detection device 200 is further provided with the power connection post 220 extending to the outside of the installation duct 120, whereby the flow rate detection device 200 can be connected to an external power source, a display, or other electrical element through the power connection post 220, and thus the gas flow rate in the gas duct 110 can be detected. Through setting up seal assembly, seal 300 installs in installation passageway 120 and is located the outside of flow detection device 200, connect electric column 220 wear to locate seal 300 and with seal 300 interference fit, from this can install flow detection device 200 seal in installation passageway 120, gland detachably lid is located the outer end of installation passageway 120 and has the butt portion 320 that can with seal 300 surface butt, from this can reduce the risk that seal 300 deviate from the export of installation passageway 120, and then can be better seal installation passageway 120, reduce the gas and take place the risk of leaking from the export of installation passageway 120, when needs to maintain or change flow detection device 200, only need with gland and seal 300 dismantle from installation passageway 120 one by one can, easy operation, make flow detection device 200 change and maintenance more convenient.

In addition, by adopting the gas valve of the embodiment of the utility model, when the gas flow in the gas channel 110 needs to be detected, the gas is directly connected through the power connection column 220 of the flow detection device 200, and the flow detection device 200 and the display for displaying the gas flow are separately arranged, so that when the display is damaged, the flow detection device 200 in the connecting installation channel 120 is not required to be replaced together, and the maintenance cost of the gas valve is greatly saved.

It will be appreciated that in the above-described configuration, the flow detection device 200 is electrically connected to the external electrical component through the power post 220 extending to the outside of the mounting channel 120, so that the sealing assembly can seal the mounting channel 120, and also facilitate the sealing connection between the power post 220 and the sealing member 300. If electrical leads are directly used, the sealing connection between the electrical leads and the seal 300 is very inconvenient and the installation of the seal assembly is inconvenient.

It will be appreciated that the gas valve in the embodiments of the present utility model may be a pressure reducing valve, and may be a proportional valve or other gas valve, which is not particularly limited to the present utility model.

It is understood that the flow detection device 200 described above may not be specifically a flow sensor.

Referring to fig. 4, in some embodiments, the outer peripheral wall of the seal 300 has an annular bead 301 disposed along the circumference of the seal 300. When the sealing member 300 is installed, the annular protruding strips 301 are easy to deform, so that the sealing member 300 can be installed more conveniently and labor-effectively.

It will be appreciated that, referring to fig. 4, the number of the annular beads 301 is two, and the two annular beads 301 are arranged in sequence in the thickness direction of the seal 300. Of course, the number of the annular beads 301 may be one, three, or more, instead of two, and when the number of the annular beads 301 is two or more, all the annular beads 301 are arranged in order in the thickness direction of the seal 300.

It will be appreciated that the seal 300 may be a rubber member, and in addition, the seal 300 may be a silicone member or other flexible member, which is not particularly limited in this regard.

Referring to fig. 1-8, in some embodiments, the number of posts 220 is multiple. Specifically, the plurality of power receiving posts 220 may include a power supply access terminal for connecting to a power supply, a signal output terminal for outputting a gas flow signal, etc., which is not particularly limited in this utility model, and may be configured according to the type of the specific flow detecting device 200.

Referring to fig. 1-8, in some embodiments, the flow detection device 200 is provided with a mounting block 230, and the power post 220 is mounted on the mounting block 230, and the power post 220 has an elbow for electrically connecting with the flow detection device 200, which can facilitate extending the conductive post on the flow detection device 200 along the axial direction of the mounting channel 120 to the outside of the mounting channel 120.

Referring to fig. 1 to 8, in some embodiments, the gland further includes a cover 310, the abutment 320 is mounted in the mounting channel 120 and located outside the seal 300, the electrical post 220 is disposed through the abutment 320, the cover 310 is sleeved on the peripheral wall of the mounting channel 120, the cover 310 has an extension 311 extending inward to abut against the abutment 320, and the extension 311 is wound outside the electrical post 220.

Through adopting above-mentioned structure, butt portion 320 is the clamp plate structure, and the sealing member 300 that can be fine is supported and is pressed inside installation passageway 120, and the extension 311 of lid 310 then can further support and press butt portion 320 to can reduce the risk that sealing member 300 deviate from the export of installation passageway 120, and then can be better seal installation passageway 120, reduce the gas and take place the risk of leaking from the export of installation passageway 120. When the flow rate detecting device 200 in the mounting channel 120 needs to be replaced and maintained, the cover 310, the abutting portion 320 and the sealing member 300 are detached from the mounting channel 120 in sequence, so that the flow rate detecting device 200 is simple in structure, convenient to operate and convenient to replace and maintain.

It can be appreciated that the cover 310 is sleeved on the outer peripheral wall of the mounting channel 120, specifically, the cover 310 may be in threaded connection with the outer peripheral wall of the mounting channel 120, or may be in a clamping connection or other detachable connection manner, which is not limited in detail.

It can be appreciated that referring to fig. 1 to 8, in some embodiments, the extension 311 is annular, the power receiving post 220 is located inside the extension 311, so that the annular extension 311 can yield the power receiving post 220, so that the power receiving post 220 can smoothly extend to the outside of the mounting channel 120, and in addition, the structure can further facilitate the production and processing of the cover 310. Of course, the extension portion 311 may be provided in a ring shape, and the extension portion 311 may include a plurality of folds arranged along a circumferential direction of the cover 310, and all folds are sequentially wound around an outer circumference of the power receiving post 220.

It is understood that when the number of the power pins 220 is plural, the extending portions 311 are wound around the outer sides of the power pins 220, specifically, the extending portions 311 are wound around the outer circumferences of all the power pins 220.

Referring to fig. 8, in some embodiments, two sets of locating structures are provided between the abutment 320 and the peripheral wall of the mounting channel 120.

By adopting the above structure, the positioning structure can facilitate the installation of the abutting portion 320, so that the through hole on the abutting portion 320 can correspond to the electrical connection post 220 of the flow detection device 200, and the electrical connection post 220 of the flow detection device 200 can be smoothly inserted into the abutting portion 320.

It should be understood that the number of the positioning structures is two, only for one exemplary illustration of fig. 9, and the number of the positioning structures may be two, one, three, four or more, which is not particularly limited.

Referring to fig. 8, in some embodiments, the positioning structure includes a first positioning portion disposed between the abutting portion 320 and a second positioning portion disposed between the outer end periphery of the mounting channel 120, where 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.

In the above-described structure, by providing the positioning structure as the engaging portion 321 and the engaging groove 322 which can be engaged with each other, not only the processing of the first positioning portion and the second positioning portion but also the positioning and mounting of the abutting portion 320 and the mounting passage 120 can be facilitated.

It should be understood that, in some embodiments, instead of the clamping portion 321 being provided at the first positioning portion and the clamping groove 322 being provided at the second positioning portion, in some embodiments, the clamping portion 321 may be provided at the second positioning portion and the clamping groove 322 may be provided at the first positioning portion, which is not particularly limited to this embodiment, only one of the first positioning portion and the second positioning portion needs to be provided with the clamping portion 321, and the other one needs to be provided with the clamping groove 322 corresponding to the clamping portion 321.

Referring to fig. 9 to 13, in some embodiments, the installation channel 120 penetrates through a sidewall of the gas channel 110 and forms a communication port 121 communicating with the gas channel 110, the gas channel 110 is installed with an installation seat 400 therein, the installation seat 400 is provided with a gas passing channel 410 communicating with the gas channel 110, an outer peripheral wall of the installation seat 400 is provided with a plugging hole 420 arranged towards the installation channel 120, and the flow detection device 200 is provided with a detection portion 210 plugged in the plugging hole 420 and extending downwards to the gas passing channel 410.

By adopting the above structure, the mounting channel 120 can be directly machined from the side wall of the valve body 100 and extend to be communicated with the gas channel 110 during machining, thereby making the machining of the mounting channel 120 more convenient and the machining and forming of the valve body 100 simpler and more convenient. In addition, by adopting the above structure, there is no need to provide an installation structure for installing and fixing the flow rate detection device 200 in the installation channel 120, and only the installation seat 400 is required to be installed in the gas channel 110 when the flow rate detection device 200 is installed, and then the flow rate detection device 200 is inserted inwards from the installation channel 120 so that the detection portion 210 is inserted into the plug-in port of the installation seat 400, so that the structure is simple and the installation is convenient.

Referring to fig. 9 to 13, in some embodiments, the gas channel 110 includes a gas outlet channel 111 and a gas chamber 112 communicating with the gas inlet end of the gas outlet channel 111, the mount 400 is located in the gas chamber 112 and has one end plugged into the gas inlet end of the gas outlet channel 111, and the mount channel 120 communicates with the gas chamber 112.

By adopting the above structure, it is possible to facilitate detection of the gas flow rate at the gas outlet passage 111.

Referring to fig. 9 to 13, in some embodiments, the valve body 100 includes upper and lower housings detachably connected, and the gas outlet passage 111 and the mounting passage 120 are both opened to the upper housing, and the gas chamber 112 is formed by the upper and lower housings surrounding each other. Therefore, when the installation is performed, one end of the installation seat 400 can be plugged into the air inlet end of the air outlet channel 111, and then the upper shell and the lower shell are installed together, so that the installation of the installation seat 400 can be facilitated.

Referring to fig. 1 to 13, in some embodiments, a connection plate 430 connected to an inner wall of the gas passing channel 410 is disposed in the gas passing channel 410, a plugging channel 431 communicating with the plugging hole 420 is formed in the connection plate 430, the detection portion 210 is plugged into the plugging channel 431, and at least one detection port 432 communicating with the plugging channel 431 and the gas passing channel 410 is formed in a side wall of the connection plate 430.

In the above-mentioned structure, the setting of connecting plate 430 can be convenient for flow monitoring device's installation, and flow monitoring device 200's detection portion 210 can peg graft in the grafting passageway 431 of mounting panel for flow monitoring device 200's installation is more firm stable, and detection port 432's the setting of then can be convenient for detection device detects the gas flow in the gas passage 410.

Referring to fig. 9-13, in some embodiments, the inner wall of the mating channel 431 is provided with a step 433, and the flow detection device 200 can abut against the step 433, thereby enabling the flow detection device 200 to be defined within the mating channel 431.

Referring to fig. 9 to 13, in some embodiments, the gas passing channel 410 includes an inner channel 411 and an outer channel 412 wound around the outer periphery of the inner channel 411, both ends of the connection plate 430 are connected to the inner wall of the outer channel 412, and the connection plate 430 penetrates the inner channel 411, and the number of the detection ports 432 is two, one detection port 432 is connected to the plugging channel 431 and the inner channel 411, and one detection port 432 is connected to the plugging channel 431 and the outer channel 412.

Through adopting above-mentioned structure, can make the connection setting of connecting plate 430 more firm stable, a detection mouth 432 intercommunication grafting passageway 431 and interior passageway 411, a detection mouth 432 intercommunication grafting passageway 431 and outer passageway 412, can detect the gas flow of interior passageway 411 and outer passageway 412 simultaneously from this for the detection of gas flow is more accurate.

It will be appreciated that the number of detection ports 432 described above is two, and is merely an exemplary illustration of fig. 9-13. In addition, the number of the detection ports 432 for communicating the plugging channel 431 and the inner channel 411 may be one, two, three or more, the number of the detection ports 432 for communicating the plugging channel 431 and the outer channel 412 may be one, two, three or more, and the utility model is not particularly limited thereto, but only the number of the detection ports 432 is at least two, at least one detection port 432 communicates the plugging channel 431 and the inner channel 411, and at least one detection port 432 communicates the plugging channel 431 and the outer channel 412.

Referring to fig. 9 to 13, in some embodiments, the mounting base 400 is of an integral structure, specifically, the peripheral wall of the inner channel 411, the peripheral wall of the outer channel 412 and the connection plate 430 are of an integral structure, so that the production and processing of the mounting base 400 can be facilitated, and meanwhile, the number of parts of the gas valve is reduced, so that the assembly and the assembly of the gas valve are simpler and more convenient.

Referring to fig. 9, in some embodiments, the end of the overgas channel 410 facing away from the outlet channel 111 is fitted with a screen 440.

In the above structure, the filter screen 440 is provided to filter the gas entering the gas outlet channel 111, so as to prevent impurities from entering the gas outlet channel 111 and flowing out of the gas outlet channel 111 to the gas appliance.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. A gas valve, comprising:

The valve body (100) is provided with a gas channel (110) and an installation channel (120) communicated with the gas channel (110);

A flow detection device (200) installed in the installation channel (120) and extending to the gas channel (110), wherein the flow detection device (200) is provided with a power connection column (220) extending to the outside of the installation channel (120);

Seal assembly, including sealing member (300) and gland, sealing member (300) install in installation passageway (120) and be located the outside of flow detection device (200), sealing member (300) with the inner wall interference fit of installation passageway (120), the gland can be dismantled the lid and locate the outer end of installation passageway (120), the gland have can with the butt portion of the surface looks butt of sealing member (300), connect electric pole (220) wear to locate sealing member (300) with the gland, just connect electric pole (220) and with sealing member (300) interference fit.

2. The gas valve according to claim 1, wherein the gland further comprises a cover body (310), the abutting portion is installed in the installation channel (120) and located on the outer side of the sealing element (300), the electric connection column (220) is arranged in a penetrating mode on the abutting portion (320), the cover body (310) is sleeved on the outer peripheral wall of the installation channel (120), the cover body (310) is provided with an extending portion (311) which extends inwards to abut against the abutting portion (320), and the extending portion (311) is arranged on the outer side of the electric connection column (220) in a winding mode.

3. The gas valve according to claim 2, characterized in that at least one set of positioning structures is provided between the abutment (320) and the peripheral wall of the mounting channel (120).

4. A gas valve according to claim 3, wherein the positioning structure comprises a first positioning part arranged between the abutting part (320) and a second positioning part arranged between the outer end periphery of the mounting channel (120), one of the first positioning part and the second positioning part is provided with a clamping part (321), the other is provided with a clamping groove (322) corresponding to the clamping part, and the clamping part (321) can be clamped into the corresponding clamping groove (322).

5. The gas valve according to claim 1, characterized in that the peripheral wall of the seal (300) has an annular bead (301) arranged along the circumference of the seal (300).

6. The gas valve according to claim 1, wherein the mounting channel (120) penetrates through a side wall of the gas channel (110) and forms a communication port (121) communicated with the gas channel (110), a mounting seat (400) is mounted in the gas channel (110), a gas passing channel (410) communicated with the gas channel (110) is formed in the mounting seat (400), a plugging hole (420) arranged towards the mounting channel (120) is formed in the peripheral wall of the mounting seat (400), and the flow detection device (200) is provided with a detection portion (210) plugged in the plugging hole (420) and extending downwards to the gas passing channel (410).

7. The gas valve according to claim 6, wherein the gas channel (110) comprises a gas outlet channel (111) and a gas chamber (112) in communication with a gas inlet end of the gas outlet channel (111), the mounting seat (400) is located in the gas chamber (112) and has one end plugged into the gas inlet end of the gas outlet channel (111), and the mounting channel (120) is in communication with the gas chamber (112).

8. The gas valve according to claim 6, wherein a connection plate (430) connected with the inner wall of the gas passage (410) is disposed in the gas passage (410), a plugging passage (431) communicated with the plugging hole (420) is formed in the connection plate (430), the detection portion (210) is plugged in the plugging passage (431), and at least one detection port (432) communicating the plugging passage (431) and the gas passage (410) is formed in a side wall of the connection plate (430).

9. The gas valve according to claim 8, wherein the gas passing passage (410) includes an inner passage (411) and an outer passage (412) wound around an outer periphery of the inner passage (411), both ends of the connection plate (430) are connected to an inner wall of the outer passage (412), and the connection plate (430) penetrates the inner passage (411);

The number of the detection ports (432) is at least two, at least one detection port (432) is communicated with the plugging channel (431) and the inner channel (411), and at least one detection port (432) is communicated with the plugging channel (431) and the outer channel (412).

10. The gas valve according to claim 7, characterized in that the end of the overgas channel (410) facing away from the gas outlet channel (111) is provided with a filter screen (440).