CN114763861A - Gas valve - Google Patents

Gas valve Download PDF

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Publication number
CN114763861A
CN114763861A CN202110040393.9A CN202110040393A CN114763861A CN 114763861 A CN114763861 A CN 114763861A CN 202110040393 A CN202110040393 A CN 202110040393A CN 114763861 A CN114763861 A CN 114763861A
Authority
CN
China
Prior art keywords
valve
port
valve body
fitting
deformation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110040393.9A
Other languages
Chinese (zh)
Inventor
不公告发明人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Sanhua Intelligent Controls Co Ltd
Original Assignee
Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Sanhua Intelligent Controls Co Ltd filed Critical Zhejiang Sanhua Intelligent Controls Co Ltd
Priority to CN202110040393.9A priority Critical patent/CN114763861A/en
Publication of CN114763861A publication Critical patent/CN114763861A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
    • F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded
    • F16K31/1264—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded with means to allow the side on which the springs are positioned to be altered
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
    • F16K31/1266—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being acted upon by the circulating fluid

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

The invention provides a gas valve, which comprises a valve body and a pressure difference adjusting device, wherein the pressure difference adjusting device comprises a valve core component, a valve body seat and a matching part, the valve core component comprises a valve rod and a flange part, the flange part comprises a sealing part, the valve body seat comprises a valve body seat body and a supporting part, the valve body seat body is positioned on the peripheral part of the valve rod and is connected with the valve rod, part of the supporting part is supported on the valve body, the matching part comprises a connecting frame and a matching part, the connecting frame is connected with the valve body, the matching part comprises a matching part body and an extending part, the pressure difference adjusting device is provided with an accommodating part, at least part of the extending part is positioned in the accommodating part, and part of the matching part body is abutted against the supporting part; the matching part body is provided with a valve port abutting part and also comprises a deformation part, when the differential pressure adjusting device is in a closed state, the sealing part abuts against the valve port abutting part, the deformation part can deform towards the direction close to the connecting frame, and the condition that the contact part of the sealing part and the valve port abutting part is easy to deform can be relatively improved.

Description

Gas valve
Technical Field
The invention relates to the technical field of gas control, in particular to a gas valve.
Background
The gas valve is widely used in a gas system, and comprises a valve body provided with a main valve opening part and a pressure difference adjusting device, wherein the pressure difference adjusting device comprises a valve plug and a valve rod, the valve plug is generally embedded with the valve rod by a rubber part, and the valve plug can be close to or far away from the main valve opening part proportion adjusting device.
Disclosure of Invention
A main object of the present invention is to provide a gas valve in which a contact portion between a valve body member and a valve port contact portion is easily deformed.
The valve core component comprises a valve rod and a flange part, the flange part comprises a sealing part, the valve body seat comprises a valve body seat body and a supporting part, the valve body seat body is positioned on the peripheral part of the valve rod and connected with the valve rod, part of the supporting part is supported on the valve body, the matching part comprises a connecting frame and a matching part, the connecting frame is connected with the valve body, the matching part comprises a matching part body and an extending part, the extending part protrudes towards the direction close to the valve body seat body, the differential pressure regulating device is provided with an accommodating part, at least part of the extending part is positioned in the accommodating part, and part of the matching part body is abutted against the supporting part;
the matching part body is provided with a valve port abutting part and further comprises a deformation part, the deformation part extends approximately along the axial direction of the differential pressure adjusting device, the deformation part protrudes towards the direction away from the supporting part, when the differential pressure adjusting device is in a closed state, the sealing part abuts against the valve port abutting part, and the deformation part can deform towards the direction close to the connecting frame.
The invention can relatively improve the condition that the contact part of the valve core component and the valve port abutting part is easy to deform by improving the structure of the differential pressure adjusting device of the fuel valve.
Drawings
FIG. 1 is a cross-sectional view of the overall construction of a gas valve provided herein;
FIG. 2 is a schematic cross-sectional view of a first embodiment of a differential pressure regulating device provided herein;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2;
FIG. 4 is a schematic cross-sectional view of a second embodiment of a pressure differential accommodating device provided in the present application
It should be noted that, the present application mainly optimizes and designs the structure of the differential pressure adjusting device, and focuses on protecting the valve element component, the mating component, the valve body seat structure and the mating or connecting relationship therebetween, and other membrane components, elastic components, etc. may be modified adaptively according to the requirements of customers or gas systems.
Referring to fig. 1, the present invention provides a gas valve, which comprises a valve body having an inlet 1a and an outlet 1b, the valve body 1 further having a first port 11, a second port 12, a third port, i.e. a proportional control port 103, a main port 104, and a gas flow channel 105 formed thereon, the valve body of the gas valve being formed by die-casting aluminum alloy, the gas valve further comprising a safety electromagnetic driving device 100, a proportional control device 200, and a pressure difference regulating device 300, the safety electromagnetic driving device 100 comprising a main valve plug and an auxiliary valve plug, the main valve plug being capable of approaching or moving away from the first port 11, the auxiliary valve plug being capable of approaching or moving away from the auxiliary valve plug 12, the safety electromagnetic driving device 100 being fixedly connected to the valve body 1 as a whole, the safety electromagnetic driving device 100 being used as a safety control device for the gas valve to ensure safety in use, when the first valve port 101 cannot be closed smoothly, the auxiliary valve plug can still close the second valve port 12, the proportional regulating device 200 comprises a diaphragm assembly, the diaphragm assembly can approach or be far away from the third valve port 103, when the diaphragm assembly is relatively close to the third valve port 103, the gas pressure acting on the gas circulation channel 105 is increased, and therefore the gas pressure acts on the buffer back pressure cavity 1A of the differential pressure regulating device 300, and the gas flow flowing through the main valve port is relatively large; or when the diaphragm assembly is relatively far away from the third valve port 103, the gas pressure acting on the gas flow channel 105 is relatively reduced, so that the pressure acting on the buffer back pressure cavity 1A of the pressure difference adjusting device 300 is reduced, the back pressure diaphragm assembly 302 is lowered, the gas flow flowing through the main valve port 104 is relatively small, and the gas flow is adjusted.
Referring to fig. 1 and 2, the differential pressure regulating device 300 includes a valve core member 301, a valve body seat 303, and a fitting 40, wherein the valve core member 301 is integrally formed of a plastic material and includes a flange portion 3011 and a valve rod 3012, the flange portion 3011 is located above the valve rod 3012, the flange portion 3011 extends in a direction substantially along a radial direction away from an axis of the differential pressure regulating device, components of the valve core member 301 include bronze powder and a polytetrafluoroethylene compound material, the valve core member 301 having the material has high wear resistance and corrosion resistance, and influence is relatively small even if the main valve opening 104 is closed or opened by frequent actuation, the flange portion 3011 includes a sealing portion 3011a, the sealing portion 3011a is formed on an outer peripheral portion of the flange portion 3011, the sealing portion 3011a is substantially in a conical structure, a cross-sectional area of the sealing portion 3011a side relatively close to the valve rod 3012 is smaller than a cross-sectional area of the sealing portion 3011a side relatively away from the valve rod 3012, the valve body seat 303 can be integrally formed by a plastic material, and comprises a valve body seat body 3032 and a supporting part 3032, the valve body seat body 3032 is fixedly connected or limited by the valve rod 3012, the valve rod 3012 can be fixedly connected in the valve body seat body 3032 in a press-fit mode, or one of the valve body seat body 3032 and the supporting part can be provided with a boss, the other one is provided with a corresponding recessed part, the limiting connection is realized by clamping and abutting, the valve rod 3012 penetrates through a through hole of the valve body seat body 3032, the pressure difference adjusting device 300 further comprises an elastic part 304, one end of the elastic part 304 abuts against the valve body seat body 3032, and the other end of the elastic part abuts against a step part of the end part of the valve rod 3012.
The support portion 3032 comprises a support portion body 3032b and a support portion protrusion 3032a, the support portion protrusion 3032a protrudes upwards away from the valve body seat body 3031, the support portion body 3032b is supported on the valve body 1 and abuts against the valve body 1, in order to better fix the valve body seat 303 and the valve body 1, the outer peripheral wall of a part of the support portion body 3032b can be in press fit with the inner wall of the valve body 1, the fitting member 40 comprises a connecting frame 41 supported by metal materials and a fitting portion 42, the fitting portion 42 can be formed by processing rubber materials, the connecting frame 41 is generally embedded with the fitting portion 42, the connecting frame 41 is generally in an inverted L-shaped structure and comprises a flanging portion 411 and a straight portion 412, the flanging portion 411 is generally in a horizontal structure, the straight portion 412 is embedded in the fitting portion 42, a part of the flanging portion 411 is embedded in the fitting portion 42, the other part of the flanging portion 411 protrudes from the end surface of the fitting portion body 422 of the fitting portion 42, the flanging part 411 and the valve body 1 can be fixedly connected by welding, the matching part 42 comprises a matching part body 422 and an extension part 421, the extension part 421 protrudes downwards towards the valve body seat body 3031, the pressure difference adjusting device is provided with a containing part B1, the outer peripheral surface of a supporting part bulge 3022a and the inner wall part of the valve body 1 roughly limit the containing part B1, at least part of the extension part 421 is positioned in the containing part B1, after the matching part 40 is installed with the valve body 1, the space part where the containing part B1 is positioned is filled by the extension part 421, the pressure difference adjusting device 200 further comprises a sealing part 50, the sealing part 50 is positioned in the sealing part containing part, part of the matching part body 422, the extension part 421, the inner wall part of the valve body 1 and the upper end surface of the supporting part body 3032B roughly limit the sealing part containing part, the upper side of the sealing part 50 is abutted against the matching part body 422, the lower side of the sealing part 50 is abutted against the upper end surface of the supporting part body 3032B, the outer side of the sealing element 50 abuts against the inner wall portion of the valve body 1 to prevent the gas from leaking from the gap between the components to cause the safety hazard, the partial fitting portion body 422 abuts against the supporting portion protrusion 3022a, the fitting portion 42 is further provided with a valve port abutting portion 4225, the valve port abutting portion 4225 in the present application may be a valve port abutting surface portion adapted to the sealing portion 3011a, the valve port abutting portion 4225 is adapted to the sealing portion 3011a in shape, the valve port abutting portion 4225 is substantially in a reverse conical structure, the sealing portion 3011a can be close to or away from the valve port abutting portion 4225 to adjust the gas flow rate of the gas valve, the partial fitting portion body 422 constituting the sealing element accommodating portion is relatively far away from the valve port 4225, and the partial fitting portion body 422 abutting against the supporting portion protrusion 3022a is relatively close to the valve port abutting portion 4225.
The fitting part body 422 further comprises a deformation part 4224, the inner wall surface of the deformation part 4224 forms part of a valve port abutting part 4225, the cross sectional area of one side, away from the extension part 421, of the deformation part 4224 is smaller than that of one side, away from the extension part 421, of the deformation part 4224 extends approximately in the axial direction of the pressure difference adjusting device, the deformation part 4224 protrudes towards the direction away from the support part 3032, the fitting part body 422 further comprises a protrusion part 4222 and a concave part 4223, the concave part 4223 is located between the deformation part 4224 and the protrusion part 4222, the deformation part 4224 is closer to the flange part 3011 relative to the concave part 4223, and when the sealing part 3011a of the flange part 3011 abuts against the valve port abutting part 4225, the pressure difference adjusting device is in a closed state as a whole, and the outward flow of gas is blocked; when the seal member 3011a is relatively separated from the valve port contact portion 4225, the gas flows to the outlet 1b through the main valve port 104 and enters the burner, and when the entire differential pressure adjusting device is in the closed state, the seal portion 3011a of the flange portion 3011 abuts against the valve port contact portion 4225, and at this time, the deformation portion 4224 can deform in a direction toward the link bracket.
Compared with the valve rod structure in the background art, the valve core component has more reliable overall strength and is of a plastic integrated processing and forming structure compared with the valve rod structure in the prior art, and the valve core component needs to be frequently contacted with the valve port abutting part 4225 in the process of frequently opening or closing the main valve port 104, and the deformation part 4224 arranged on the fitting piece 40 can perform elastic deformation, so that the situation that the sealing part of the valve core component and the contact part of the valve port abutting part are easily deformed can be improved, and the strength and the actuating reliability of the component are greatly improved.
The application provides a gas valve, including the valve body, still include the pressure differential adjusting device, the pressure differential adjusting device includes the valve core part, the valve body seat, and the fitting part, the valve core part includes valve rod and flange portion, the flange portion includes the sealing part, the valve body seat includes valve body seat body and supporting part, the valve body seat body is located the peripheral part of valve rod and is connected with the valve rod, part of the supporting part supports in the valve body, the fitting part includes link and cooperation portion, the link is connected with the valve body, cooperation portion includes cooperation portion body and extension, the extension is towards protruding near the valve body seat body direction, the pressure differential adjusting device is equipped with the portion of holding, at least part extension is located the portion of holding, part cooperation portion body offsets with the supporting part;
the matching part body is provided with a valve port abutting part and further comprises a deformation part, the deformation part extends approximately along the axial direction of the pressure difference adjusting device, the deformation part protrudes towards the direction away from the support part, when the pressure difference adjusting device is in a closed state, the sealing part abuts against the valve port abutting part, and the deformation part can deform towards the direction close to the connecting frame.
It should be noted that the ordinal numbers such as "first" and "second" and the like, and the directional terms such as "upper" and "lower" and the like, which are used herein, are all described based on the drawings, and only the nomenclature of distinguishing different parts should not be considered as limiting the sequence of parts, but merely as a preferred embodiment of the invention, it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the scope of the invention, and these modifications and amendments should also be considered as the protection scope of the invention.

Claims (10)

1. A gas valve is characterized by comprising a valve body and a differential pressure adjusting device, wherein the differential pressure adjusting device comprises a valve core component, a valve body seat and a fitting piece, the valve core component comprises a valve rod and a flange part, the flange part comprises a sealing part, the valve body seat comprises a valve body seat body and a supporting part, the valve body seat body is positioned on the peripheral part of the valve rod and is connected with the valve rod, part of the supporting part is supported on the valve body, the fitting piece comprises a connecting frame and a fitting part, the connecting frame is connected with the valve body, the fitting part comprises a fitting part body and an extending part, the extending part protrudes towards the direction close to the valve body seat body, the differential pressure adjusting device is provided with an accommodating part, at least part of the extending part is positioned in the accommodating part, and part of the fitting part body is abutted against the supporting part;
the matching part body is provided with a valve port abutting part and further comprises a deformation part, the deformation part extends approximately along the axial direction of the differential pressure adjusting device, the deformation part protrudes towards the direction away from the supporting part, when the differential pressure adjusting device is in a closed state, the sealing part abuts against the valve port abutting part, and the deformation part can deform towards the direction close to the connecting frame.
2. The gas valve according to claim 1, wherein a cross-sectional area of a side of the deformation portion remote from the extension portion is smaller than a cross-sectional area of a side of the deformation portion close to the extension portion, and an inner wall surface of the deformation portion forms part of the valve port abutment portion.
3. A gas valve as claimed in claim 1, wherein the fitting body further includes a recess and a projection, the projection projecting away from the support portion, the recess being located between the projection and the deformation portion, the deformation portion being closer to the valve port abutment portion than the recess.
4. A gas valve according to claim 1, wherein the support portion includes a support portion projection projecting upward relative to the support portion body, an outer peripheral portion of the support portion projection and an inner wall portion of the valve body substantially defining the accommodating portion, an upper end surface of the support portion projection abutting against the fitting portion body, and an upper end surface of the support portion body abutting against the extending portion.
5. A gas valve according to claim 4, wherein the pressure difference adjusting means further comprises a sealing member, the pressure difference adjusting means being provided with a sealing member accommodating portion in which the fitting portion body, the extending portion, the upper end face of the support portion body and the inner wall portion of the valve body substantially define the sealing member accommodating portion, the sealing member being located in the accommodating portion with one side of the sealing member abutting against the fitting portion body and the other side of the sealing member abutting against the upper end face of the support portion body.
6. A gas valve as claimed in claim 1, wherein said flange portion is located above said valve stem, said flange portion extends in a direction substantially radially away from an axis of said differential pressure adjusting means, said seal portion is located at an outer peripheral portion of said flange portion, said seal portion has a substantially conical surface configuration, and a cross-sectional area of said seal portion on a side relatively close to said valve stem is smaller than a cross-sectional area of said seal portion on a side relatively away from said valve stem.
7. A gas valve according to claim 1, wherein the valve stem is press-fitted into the valve body base body, the valve body base body being provided with a through hole through which the valve stem passes.
8. A gas valve according to any one of claims 1 to 7, wherein the core member is integrally formed from a plastics material, the material from which the core member is made including bronze and polytetrafluoroethylene compound materials.
9. A gas valve as claimed in any one of claims 1 to 7, wherein the connecting bracket is formed by being fitted into the fitting portion, the connecting bracket has a substantially L-shaped configuration, the connecting bracket includes a flange portion and a straight portion, the straight portion is fitted into the fitting portion, part of the flange portion protrudes from the end face of the fitting portion body, and the flange portion is welded to the valve body.
10. A gas valve according to any one of claims 1 to 7, wherein the valve body further defines a first port, a second port, a third port, a main port and a gas flow path, and further includes a safety solenoid actuator including a main valve plug and a secondary valve plug, the main valve plug being movable towards and away from the first port, the secondary valve plug being movable towards and away from the second port, and a proportional regulator including a diaphragm assembly movable towards and away from the third port and acting on the gas flow path through the third port to influence a buffer backpressure chamber of the differential regulator.
CN202110040393.9A 2021-01-13 2021-01-13 Gas valve Pending CN114763861A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110040393.9A CN114763861A (en) 2021-01-13 2021-01-13 Gas valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110040393.9A CN114763861A (en) 2021-01-13 2021-01-13 Gas valve

Publications (1)

Publication Number Publication Date
CN114763861A true CN114763861A (en) 2022-07-19

Family

ID=82363592

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110040393.9A Pending CN114763861A (en) 2021-01-13 2021-01-13 Gas valve

Country Status (1)

Country Link
CN (1) CN114763861A (en)

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