WO2021098522A1 - 一种燃气比例阀 - Google Patents

一种燃气比例阀 Download PDF

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Publication number
WO2021098522A1
WO2021098522A1 PCT/CN2020/126657 CN2020126657W WO2021098522A1 WO 2021098522 A1 WO2021098522 A1 WO 2021098522A1 CN 2020126657 W CN2020126657 W CN 2020126657W WO 2021098522 A1 WO2021098522 A1 WO 2021098522A1
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WO
WIPO (PCT)
Prior art keywords
iron core
sleeve
moving iron
valve
gas proportional
Prior art date
Application number
PCT/CN2020/126657
Other languages
English (en)
French (fr)
Inventor
范豪丽
Original Assignee
浙江三花智能控制股份有限公司
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 浙江三花智能控制股份有限公司 filed Critical 浙江三花智能控制股份有限公司
Priority to US17/777,421 priority Critical patent/US20220397210A1/en
Priority to EP20889414.7A priority patent/EP4063700A4/en
Publication of WO2021098522A1 publication Critical patent/WO2021098522A1/zh

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    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
    • F16K11/14—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle
    • F16K11/16—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle which only slides, or only turns, or only swings in one plane
    • F16K11/161—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle which only slides, or only turns, or only swings in one plane only slides
    • 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
    • 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
    • F16K31/42—Actuating devices; Operating means; Releasing devices actuated by fluid by means of electrically-actuated members in the supply or discharge conduits of the fluid motor
    • 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
    • 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
    • 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
    • F16K31/0603—Multiple-way valves
    • F16K31/0624—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
    • F16K31/02—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
    • F16K31/02—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
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/002—Gaseous fuel
    • F23K5/007—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/005—Regulating fuel supply using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2400/00—Pretreatment and supply of gaseous fuel
    • F23K2400/20—Supply line arrangements
    • F23K2400/201—Control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2900/00—Special features of, or arrangements for fuel supplies
    • F23K2900/05002—Valves for gaseous fuel supply lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/10—Fail safe for component failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/14—Fuel valves electromagnetically operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/18—Groups of two or more valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/24—Valve details

Definitions

  • the invention relates to the technical field of gas control, in particular to a gas proportional valve.
  • gas proportional valves currently on the market usually use at least two valve ports.
  • the two valve ports are opened or closed by two independent solenoid valves. If one valve fails, the other valve can still be used. Close the valve port to ensure the safety of the gas proportional valve.
  • the main purpose of the present invention is to provide a gas proportional valve with a new structure, which can also realize that when one valve fails, the other valve can still close the valve port.
  • the present invention provides a gas proportional valve, which includes a body, a first valve port, and a second valve port, and also includes an electromagnetic drive device.
  • the electromagnetic drive device includes a static iron core, a first sleeve portion, a first core assembly, A second core assembly, a first elastic member, and a second elastic member.
  • the first core assembly includes a first moving iron core, a second sleeve portion, and a first sealing portion.
  • the first movable iron core is fixedly connected or in a position-limiting connection
  • the lower end of the first sleeve portion is fixedly connected or in a position-limiting connection with the first sealing portion
  • the first elastic member abuts against the first sealing portion
  • the second core assembly includes a second moving iron core and a second sealing part, the lower end of the second moving iron core is fixedly connected or limitedly connected with the second sealing part, and the first moving iron core
  • the iron core and/or the second moving iron core is provided with a concave portion, at least part of the second elastic member is located in the concave portion and one end abuts the first movable iron core and the other end abuts the second movable iron core ;
  • the first moving iron core When the electromagnetic drive device is energized, the first moving iron core can carry the second sleeve portion and the first sealing portion along the first sleeve wall of the first sleeve portion in the axial direction. Ascending movement to make the first sealing part away from the first valve port, the second moving iron core can take the second sealing part away from the second valve port, the first moving iron core Capable of resisting the second moving iron core and the first moving iron core and the second moving iron core are close to the static iron core;
  • the first sealing part closes the first valve port and the second sealing part closes the second valve port, and the first moving iron core is connected to the A first distance is formed between the second moving iron cores, a second distance is formed between the first moving iron core and the closed end of the first sleeve, and the first distance is smaller than the second distance.
  • the electromagnetic drive device for a gas proportional valve includes a static iron core, a first sleeve part, a first core assembly, a second core assembly, a first elastic member, and a second elastic member.
  • the first core assembly includes The first moving iron core, the second sleeve part, the first sealing part, the first sealing part can close the first valve port
  • the second core assembly includes the second moving iron core and the second sealing part
  • the second sealing part can Close the second valve port.
  • Figure 1 is a cross-sectional view of the overall structure of the electromagnetic drive device of the gas proportional valve provided by the present invention
  • Figure 2 is a cross-sectional view of the overall structure of the gas proportional valve provided by the present invention.
  • Figure 3 is a cross-sectional view of the overall structure of the proportional regulating device of the gas proportional valve provided by the present invention
  • Fig. 4 is a three-dimensional schematic diagram of a proportional adjusting device for a gas proportional valve provided by the present invention.
  • the gas proportional valve as shown in Figure 2 includes a body 1, an inlet 1a and an outlet 1b. A gas main passage 1c is formed in the body 1. Gas flows from the inlet 1a and flows out of the outlet 1b.
  • the body 1 can be formed by die-casting aluminum alloy. 1 is also provided with a first valve port 101 and a second valve port 102.
  • the gas proportional valve also includes an electromagnetic drive device 10 which is fixedly connected to the main body 1.
  • the electromagnetic drive device 10 includes a static iron core 13, a first sleeve portion 15, a first core assembly 16, a second core assembly 17, a first elastic member 18, and a second elastic member 19, and also includes a housing 11 and a coil member 12.
  • the coil component 12 is located on the outer periphery of the first sleeve portion 15, the housing 11 roughly covers the coil component 12, the first core assembly 16 can approach or be far away from the first valve port 101 to open or close it, and the second core
  • the assembly 17 can approach or move away from the second valve port 102 to open or close it, and when the first core assembly 16 fails to close the first valve port 101, the second core assembly 17 can still close the second valve port.
  • the electromagnetic drive device is optimized to form a two-stage core assembly with respective control valve ports, so that the overall structure of the gas proportional valve is relatively simple. Can guarantee the safety of use.
  • the electromagnetic drive device 10 includes a static iron core 13, a first sleeve portion 15, a first core assembly 16, and a second core.
  • the assembly 17, the first elastic element 18 and the second elastic element 19 further include a housing 11 and a coil component 12.
  • the housing 11 has magnetic permeability
  • the coil component 12 includes a skeleton 122
  • the coil component 12 is provided with an inner hole 121 at a substantially central position, at least Part of the static iron core 13 is located in the inner hole 121.
  • the static iron core 13 can be fixedly connected to the upper part of the housing 11 by means of riveting, welding, etc., and can also be connected to the upper part of the housing 11 by means of dot-limiting.
  • the upper part of the housing 11 is provided with an opening, and the static iron core 13 is provided with a raised part corresponding to the opening, which can be fixedly connected by riveting or welding.
  • the static iron core 13 is also provided with a recess 131,
  • the recessed portion 131 is generally recessed toward the upper part of the housing 11 and includes a bottom wall 131a and a side wall 131b.
  • the first sleeve portion 15 is generally a cylindrical structure with one end closed and the other end opened, and at least part of the first sleeve portion 15 is the first sleeve.
  • the cylindrical main body of the cylinder 15 is located in the inner hole 121.
  • the first sleeve 15 includes a closed end 15a and an open end 15b.
  • the open end 15b includes an extension 151b extending in the circumferential direction.
  • a part of the extension 151b is relatively close to the first In the second sleeve portion 162 of the core assembly 16, another part of the extension portion 151b is relatively far away from the second sleeve portion 162, and a part of the extension portion 151b is clamped between the housing 11 and the first elastic member 18, and the upper and lower ends are respectively connected to the housing and The first elastic member abuts, another part of the extension is clamped between the housing 11 and the sealing member 100, and the upper and lower ends respectively abut the housing and the sealing member, so that the whole electromagnetic drive device is fixed and sealed to the body 1 to prevent gas leakage.
  • the closed end 15a is located in the recess 131 and the closed end 15a is relatively close to the bottom wall 131a or against the bottom wall 131a, and the side wall 131b is relatively close to or against the first sleeve wall 15c of the first sleeve portion 15 ,
  • the first core assembly 16 includes a first movable iron core 161, a second sleeve portion 162 and a first sealing portion 163.
  • the first movable iron core 161 can be made of soft magnetic material, and does not carry magnetism in a non-energized state. , Once entering the energization mode, it has a magnetic effect.
  • the first movable iron core 161 and the second sleeve part 162 can be fixedly connected by welding or other means to achieve the limitation with the first movable iron core by dots on the second sleeve part.
  • the first sleeve portion 15 and the second sleeve portion 162 can be made of non-magnetic stainless steel material through a stretching process, and the lower end of the second sleeve portion 162 is fixedly connected to the second sealing portion 163 or Limiting connection.
  • the two can be connected in a limiting manner.
  • the second sealing portion 163 includes a cap-shaped metal piece and a rubber piece. The cap-shaped metal piece roughly covers the rubber piece.
  • the second sleeve The flanging of the part 162 is squeezed into the rubber part by the flexible deformation effect of the rubber part to fit tightly. It is also possible to extend the lower end of the second sleeve part 162 for flanging to limit the position of the first sealing part 163.
  • the two are fixedly connected by welding or other means.
  • the upper end of the first elastic member 18 abuts the extension portion 151b and the other end abuts the first sealing portion 163.
  • the valve sealing force of the first elastic member 18 can make the first
  • the sealing portion 163 closes the first valve port 101.
  • the electromagnetic drive device further includes a first accommodating cavity A1 and a second accommodating cavity A2.
  • the first sleeve portion 15 roughly defines the second accommodating cavity A2, and at least part of the first core assembly 16 It can perform axial lifting movement in the second accommodating cavity A2.
  • the first moving iron core 161 can carry the second sleeve portion 162 and the first sealing portion 163 along the first sleeve wall 15c.
  • the second movable iron core 171 can carry the second sealing part 172 away from the second valve port 102, and the second core assembly 17 includes a second movable iron The core 171 and the second sealing portion 172.
  • the second movable iron core 171 can be made of soft magnetic material.
  • the second movable iron core 171 includes a body 171a and a valve stem 172a.
  • the second movable iron core 171 can be an integrally processed and formed structure.
  • the body 171a and the valve stem 172a are respectively processed and molded before being fixedly connected.
  • the first movable iron core 161, the second sleeve portion 162, and the first sealing portion 163 roughly define the first accommodating cavity A1, at least part of the second accommodating cavity A1.
  • the movable iron core 171 is located in the first accommodating cavity A1.
  • the second movable iron core 171 can bring the second sealing part 172 close to or away from the second valve port 102.
  • the valve stem 172a has a rod head 1721a, and the rod head and the second sealing part 172
  • the second sealing part 172 can be made of rubber, and the head of the rod can be pressed in tightly with it through the flexible deformation of the rubber.
  • the first sealing part 163 is provided with There is an opening, at least part of the valve stem 172a extends out of the opening, and at least part of the second movable iron core 171 can perform axial lifting movement along the second sleeve wall of the second sleeve portion 162 in the first accommodating cavity A1.
  • the cylindrical portion 15 is sleeved on the outer peripheries of the first movable iron core 161 and at least part of the second sleeve portion 162.
  • the first distance L1 is also the first magnetic gap formed between the first moving iron core and the second moving iron core.
  • the first moving iron core 161 has an upper end surface 161a, an upper end surface 161a and a first sleeve
  • a second distance L2 is formed between the closed ends 15a of the portion 15. The first distance L1 is smaller than the second distance L2.
  • the second moving iron core 171 is provided with a recess 171a, and at least part of the second elastic member 19 is located in the recess 171a and one end abuts against the bottom wall of the recess 171a and the other end abuts against the end surface of the first moving iron core 161.
  • the first moving iron core 161 may also be provided with the recess.
  • the first One end of the two elastic members 19 can also abut against the top wall of the recess and the other end can abut against the end surface of the second movable iron core 171, or the first movable iron core 161 and the second movable iron core 171 can be provided with the recess at the same time, and the second elastic A part of the piece 19 is located in the concave portion of the first moving iron core 161, another part of the second elastic piece 19 is located in the concave portion of the second moving iron core 171, and one end of the second elastic piece 19 abuts against the first moving iron core 161 and the other end and
  • the second moving iron core 171 is offset.
  • the electromagnetic drive device 10 further includes a magnetic conductive member 14 which is sleeved on the outer peripheral wall of the first sleeve portion 15.
  • the magnetic conductive member 14 includes a vertical portion 141 and a flange portion 142.
  • the magnetic conductive member 14 is substantially in the shape of A cap-shaped structure that is open up and down, the vertical portion 141 is clamped between the frame 122 and the first sleeve portion 15 in the longitudinal direction, the inner wall of the vertical portion 141 is against the outer peripheral wall, and the outer wall of the vertical portion 141 is against the frame 122 In the transverse direction, the flange portion 142 is clamped between the frame 122 and the housing 11, and the upper end abuts against the frame 122, and the lower end abuts against the lower part of the housing 11.
  • the magnetic conductive member 14 passes through the first sleeve portion 15 and the second movable
  • the iron core 171 is offset, and the magnetic force can be transmitted to the second moving iron core 171 in the energized state.
  • the vertical portion 141 can be set longer.
  • the electromagnetic drive device As shown in Figure 1 and Figure 2, the electromagnetic drive device is in the fully closed valve position. At this time, the coil component 12 is in the power-off mode, and the first moving iron core 161 is relatively far away from the static state. Iron core 13, a second distance L2 is formed between the upper end surface 161a of the first movable iron core 161 and the closed end 15a, and the first sealing portion 163 closes the first valve port by the valve sealing force applied by the first elastic member 18 101.
  • the second sealing portion 172 closes the second valve port 102 by the valve sealing force exerted by the second elastic member 19, and a first distance L1 is formed between the first movable iron core 161 and the second movable iron core 171, that is, the first distance L1 is formed between the first movable iron core 161 and the second movable iron core 171.
  • a magnetic gap when the coil component 12 starts to switch to the energized state, affected by the electromagnetic force, part of the magnetic force of the magnetically permeable housing 11 is transmitted to the static iron core 13 through the upper part of the housing 11, and the other part of the magnetic force passes through the lower part of the housing 11
  • the second magnetic gap S2 is formed between the upper end surface 161a of the first moving iron core 161 and the side wall 131b of the static iron core 13 and the second magnetic gap S2 is formed between the upper end surface 161a of the first moving iron core 161 and the side wall 131b of the static iron core 13.
  • a first magnetic gap S1 is formed between the lower end surface and the second moving iron core 171.
  • the first moving iron core 161 is relatively suspended and gathers relatively little magnetic force in the second magnetic gap S2, and the first distance L1 is smaller than The second distance L2, the first magnetic gap S1 is relatively small, and the magnetic conductive member 14 can transmit more magnetic force to the second moving iron core 171 under the action of the magnetic conductive member 14, and the magnetic force is mostly concentrated in the first magnetic gap S1 ,
  • the magnetic force received by this part is strong, the second moving iron core 171 overcomes the spring force of the second elastic member 19, the first moving iron core 161 can preferentially attract the second moving iron core 171, the first moving iron core 161 and After the second moving iron core 171 is offset, the first magnetic gap S1 is eliminated, that is, the first distance L1 is eliminated.
  • the first moving iron core 161 and the second moving iron core 171 form a whole, because the first magnetic gap S1
  • the elimination of the magnetic conductive member 14 can transmit more magnetic force to the first moving iron core 161, so that the magnetic force concentrated in the second magnetic gap S2 also gradually increases, so that the first moving iron core 161 and the second moving iron core 171 work together Approaching the static iron core 13 upwards, the second distance L2 and the second magnetic gap S2 are also gradually reduced.
  • the two offset Eliminate the first magnetic gap S1
  • the second sealing portion 172 gradually moves away from the second valve port 102, and the second valve port 102 is preferentially opened.
  • the first moving iron core 161 carries the second moving iron core 171 and the second sleeve portion 162 and the first sealing portion 163 are upwardly close to the static iron core 13, the first valve port 101 is also opened, so that the first valve port 101 and the second valve port 102 are both opened, and the electromagnetic drive device is in a fully open state; when the coil component 12 When switching from the energization mode to the power-off mode, as the electromagnetic force disappears, the first moving iron core 161 and the static iron core 13 begin to separate, and the second moving iron core 171 and the first moving iron core 161 are in a conflicting state.
  • the moving iron core 171 also performs the closing action along with the first moving iron core 161, and is affected by the second
  • the second core assembly 17 closes the second valve port 102 by the elastic member 19, that is, the valve-sealing elastic force, and the first core assembly 16 closes the first valve port 101 by the valve-closing force of the first elastic member 20, specifically , Due to the disappearance of the electromagnetic force and the valve sealing force of the second elastic member 19, the second movable iron core 171 is separated from the first movable iron core 161, and the second movable iron core 171 takes the second sealing part 172 to The second valve port 102 is closed downward, and the first sealing portion 163 closes the first valve port 101 downwardly, the first movable iron core 161 and the second sleeve due to the disappearance of the electromagnetic force and the valve sealing force of the first elastic member 18
  • the portion 162 also moves downward.
  • the elastic force of the first elastic member 18 is set to be greater than the second elasticity. If the elastic force of the second elastic element 19 is greater, the second elastic element 19 can push the first movable iron core 161 upward to separate it from the second movable iron core 171 when the valve is closed.
  • an upward disengaging force is also applied to the first movable iron core 161 so that the first sealing part 163 cannot close the valve well. In this structure, even the first A core assembly 16 cannot smoothly close the valve downwards.
  • the valve-closing elastic force of the second elastic member 19 can also make the second movable iron
  • the core is separated from the first movable iron core and takes the second sealing portion 172 to close the second valve port 102 downward, or when the second core assembly 17 cannot smoothly close the second valve port 102 downward, the first elastic Under the valve sealing force of the member 18, the first movable iron core 161 can also move down with the second sleeve portion 162 and the first sealing portion 163 to close the first valve port 101 to ensure the safety of the gas proportional valve and prevent gas. Of leaks.
  • the electromagnetic drive device structure 10 By optimizing the design of the electromagnetic drive device structure 10, there is only one layer of the first sleeve portion 15 between the static iron core 13 and the first moving iron core 161, and the relative magnetic resistance is small.
  • the first sleeve part 15 When the coil is energized, the first sleeve part 15 is the first one.
  • the second moving iron core 171 overcomes the elastic force of the second elastic member 19 and moves upward. During the upward movement of the second moving iron core 171, due to the action of the magnetic field, the closer the second moving iron core 171 is to the first moving iron core 161, the gain The greater the electromagnetic force, the greater the acceleration obtained.
  • the acceleration and moving speed of the second moving iron core 171 will affect the first moving iron
  • the core 161 generates a boosting effect, so that the first movable iron core 161 can carry the second sleeve portion 162 and the first sealing portion 163 to open the first valve port 101 more smoothly, thereby achieving the smooth opening of the first core assembly 16
  • the valve is actuated by the assistance of the second moving iron core 171.
  • the force that the first core assembly 16 receives when opening the valve can come from the force of the first moving iron core 161 and the electromagnetic force of the coil part 12.
  • the electromagnetic force can be relatively reduced, and the amount of coil windings can be reduced, thereby reducing manufacturing costs.
  • the proportional adjusting device 20 includes a receiving cavity B, a static iron core 21, a regulating valve stem 22, a moving iron core 23 and a diaphragm assembly 24, and the moving iron core 23 Located in the accommodating cavity B, the regulating valve stem 22 can be fixedly connected to the movable iron core by a metal material or as an integral structure.
  • the proportional regulating device also includes a sleeve 28, a housing part 29 and a coil part, which is located on the outer periphery of the static iron core 21 ,
  • the housing member 29 has magnetic permeability and roughly surrounds the coil components, the sleeve 28 is fixedly connected or limitedly connected with the static iron core 21, the sleeve 28 and the static iron core 21 roughly define the accommodating cavity B, and the moving iron core 23 can carry
  • the regulating valve stem 22 moves axially up and down along the sleeve wall of the sleeve 28 in the accommodating chamber B.
  • the movable iron core 23 is located above the static iron core 21 in an inverted convex shape as a whole, and the static iron core 21 is relatively close to the diaphragm assembly 24.
  • the moving iron core 23 moves downward and gradually approaches the static iron core 21, and the regulating valve stem 22 moves downward along with the moving iron core 23.
  • the coil component is de-energized
  • the lower excitation effect disappears, the moving iron core 23 moves upward and gradually away from the static iron core 21, and the regulating valve stem 22 moves upward along with the moving iron core 23.
  • the regulating valve stem 22 includes a body portion, an upper end portion 222, and a lower end.
  • the static iron core 21 includes a first recessed portion 211, a first through hole 212, and a second recessed portion 213.
  • the first recessed portion 211 is located at the upper position of the static iron core 21, and the second recessed portion 213 is located on the static iron core 21 In the lower position, the first through hole 212 can communicate with the first recessed portion 211 and the second recessed portion 213, and the movable iron core 23 includes a second through hole 231 and a raised portion 232.
  • the raised portion 232 is a movable iron core with a relatively larger diameter.
  • the large-diameter part 233 of 23 is the smaller and small-diameter part.
  • the convex part 232 is matched with the first concave part 211.
  • the coil component When the coil component is energized, it is excited, and the movable iron core 23 and the regulating valve stem 22 move downward and statically.
  • the iron core 21 attracts and the protrusion 232 can extend into the first recess 211.
  • the excitation effect disappears.
  • the movable iron core 23 moves upwards together with the regulating valve stem 22 and is relatively far away from the static iron core 21.
  • the raised portion 232 is relatively far away from the first recessed portion 211, the outer peripheral wall of the large diameter portion 233 of the movable iron core 23 can move axially along the sleeve wall in the accommodating cavity B, and the first through hole 212 is the same as the second through hole 231
  • the regulating valve stem 22 can pass through the second through hole 231, the first recessed portion 211, the first through hole 212 and the second recessed portion 213 from top to bottom.
  • At least part of the body portion 221 is located in the first through hole 212 and
  • the second through hole 231, the lower end 223 is located in the second recess 213, the static iron core 21 further includes a lower end 214, and the lower end 214 is fixedly connected to the housing member 29.
  • the diaphragm assembly 24 includes a sealing portion 241, a diaphragm 242, and a spring seat 243
  • the lower end of the regulating valve stem 22 is fixedly connected or connected with the diaphragm assembly 24 in a fixed connection or a limit connection. In this embodiment, the two pass through the limit connection.
  • the lower end of the regulating valve stem 22 is embedded in the spring seat to be tightly connected.
  • the spring seat 243 can be made of flexible rubber material, and the lower end 223 of the regulating valve stem 22 can be tightly matched with the spring seat 243 through flexible deformation.
  • the lower end of the regulating valve stem 22 can also be fixedly connected to the diaphragm assembly by means of interference fit or the like.
  • the spring 244 is sleeved on the protrusion of the sealing portion 214 and one end abuts the spring seat and the other end abuts the sealing portion 214.
  • the spring seat and at least part of the spring 244 are located in the second recessed portion 211.
  • the proportional adjustment device 20 further includes an adjustment mechanism 40.
  • the adjustment mechanism 40 includes a body portion 41, a limit adjustment rod 42 and a receiving portion 43.
  • the accommodating part adopts plastic parts as an integral structure, and the limit adjusting rod adopts metal parts. According to actual needs, the body part or the accommodating part can also be made of metal parts.
  • the material of the parts of the adjustment mechanism is not specifically restricted here.
  • the accommodating part 43 is fixedly connected or limitedly connected to the housing member 29.
  • the receiving portion 43 includes an extension portion 431, a flange portion 432, and a receiving hole 433.
  • the upper and lower ends of the receiving portion 43 are both open-shaped structures, and the interior of the receiving portion 43 also includes a receiving hole.
  • the wall of the hole, and the wall of the receiving hole is formed with a first threaded portion 444 that is matched with the body portion 41.
  • the extension portion 431 can be interference fit with the sleeve 28, and the flange portion 432 abuts against the outer wall of the housing member 29 to accommodate
  • the part 43 as a whole can be fixedly connected to the housing member 29 or in a position-limiting connection, or the flange portion 432 and the housing member 29 may be provided with corresponding screw holes, and the flange portion 432 and the housing member 29 can be fixedly connected by screw tightening.
  • protrusions or recesses can be provided on the lower bottom surface of the flange portion 432, and the surface of the housing member 29 is provided with corresponding recesses or protrusions.
  • the recesses and protrusions are matched to each other to limit the connection of the two, and only the entire receiving portion needs to be connected.
  • the main body 41 is at least partially located in the receiving hole 433. If necessary, the upper end of the main body 41 can be extended to the outside of the receiving hole 433.
  • the main body 41 can be integrally formed by plastic or metal.
  • the outer wall is provided with a second threaded portion 4121 that is threadedly engaged with the first threaded portion 444.
  • the body portion 41 has a cylindrical structure as a whole. It includes a sleeve body 412, a claw portion 413, a body accommodating cavity 414, and a mating portion 415, and a claw portion 413.
  • the sleeve body 412 extends downward and protrudes.
  • the body accommodating cavity 414 includes a gap C. Specifically, a substantially semi-annular gap C is formed between the sleeve body 412 and the claw portion 413, and a cylindrical sleeve
  • the outer peripheral wall of the main body 412 is provided with a second threaded portion 4121, and the pawl portion 413 has a C-shaped opening structure as a whole.
  • the pawl portion 413 includes an opening 4131, a pawl hole 4132, and a pawl surface 4133.
  • the upper end of the valve stem 22 is adjusted
  • the portion 222 is inserted into the claw hole 4131 through the opening 4131 and is adapted to it, and can extend into the body accommodating cavity 414 through the notch C.
  • the claw surface 4133 can cooperate with the upper flange portion 2221 of the upper end portion 222.
  • a distance L1 is formed between the first concave bottom surface 211a of the static iron core 21 and the convex bottom surface 232a of the moving iron core 23, and the claw surface 4133 is convex to the upper end.
  • a distance L2 is formed between the edges 2221, and L1 is greater than L2.
  • the regulating valve stem 22 and the opening 4131 can carry the movable iron core 23 for axial lifting movement through a clearance fit.
  • the mating part 415 includes a hexagonal fitting hole
  • the structure can be used in conjunction with an external L-shaped hex wrench tool.
  • the body containing cavity 414 penetrates through the mating hole, and the body 41 moves upward relative to the containing portion 43 through the thread cooperation of the first threaded portion 444 and the second threaded portion 4121 Or downward movement, it should be noted that the matching hole structure of the matching part can also be other polygonal or irregular-shaped structures. It only needs to be used in conjunction with an external wrench, so that the body part can move upward or downward relative to the receiving part. That's it.
  • the body portion 41 of the adjusting mechanism 40 and the limit adjusting rod 42 can be installed, or the moving iron core 23 and the adjusting valve stem 22 can be fixedly connected or installed as an integral structure to complete the installation.
  • Iron core valve stem assembly then put the upper end of the regulating valve stem 22 into the position of the opening 4131 on the side of the claw part 413, and then put the whole into the accommodating chamber B, so that the regulating valve stem 22 is aligned with the first through hole 212 ,
  • the various parts of the diaphragm assembly 24 are installed in sequence, the upper flange portion 2221 of the regulating valve stem 22 is reset by the spring 244 can abut against the limit regulating valve stem 42, and the inner peripheral wall of the sleeve body 412 is also provided with
  • the outer peripheral wall of the limit regulating lever 42 is provided with a fourth threaded portion 421, and the upper end of the limit regulating lever 42 is provided with a substantially in-line recessed groove, which passes through the third threaded portion 4122 Cooperating with the thread of the fourth threaded portion 421, the groove portion cooperates with an external flat-blade screwdriver tool to make the limit adjustment rod 42 move upward or downward relative to the sleeve body 412.
  • the limit adjustment rod Other shapes of grooves can also be provided on the upper end of the tube for use with external tools, as long as the limit adjustment rod can be moved upward or downward relative to the sleeve body.
  • the proportional adjustment device 20 also includes a magnetically permeable part assembly 50 which includes a first magnetically permeable part 51 and a second magnetically permeable part 52.
  • the first magnetically permeable part 51 is sleeved on the outer circumference of the static iron core 21 and is connected to it.
  • the second magnetically permeable portion 52 is sleeved on the outer circumference of the sleeve 28 and resists it.
  • the first magnetically permeable portion 51 includes a first straight section and a first flanged section
  • the second magnetically permeable portion 52 includes a second straight section.
  • the first straight section abuts against the outer periphery of the static iron core 21, the first flanging section abuts against the lower part of the coil component and the lower part of the housing member 29, and the second straight section abuts against the lower part of the sleeve 28
  • the outer circumference is against, the movable iron core 23 is against at least part of the second straight section through the sleeve 28, and the second flanging section is against the frame of the coil component and the upper part of the housing member 29 respectively.
  • the proportional adjustment device is energized to excite Bottom, the magnetic force generated by the coil component is transmitted to the entire housing member 29, and the lower end 214 of the static iron core 21 is fixedly connected to the housing member 29, that is, the static iron core and the housing member have a certain magnetic area, and the magnetic force can be transmitted to the static iron core.
  • the first magnetically conductive part 51 By providing the first magnetically conductive part 51, increasing the mating area with the static iron core 21 can further enhance the magnetic force.
  • Another part of the magnetic force is transmitted to the second magnetically conductive part 52 through the upper shell of the housing member 29, and at least part of the second straight section and
  • the moving iron core 23 has an indirect contact area, and the magnetic force can be transmitted to the moving iron core 23 through the contact area of the second straight section and the moving iron core 23, so that the moving iron core and the static iron core are attracted to produce the product
  • the whole adjusting mechanism 40 can also be moved upward to the outside of the housing member 29. It is only necessary to ensure that it does not depart from the whole product, and the movable iron core 23 and the regulating valve stem 22 can contact with the upper opening of the housing member 29 to form magnetic conduction when they move upward in the axial direction.
  • Gas enters from the inlet 1a of the gas proportional valve, and the electromagnetic drive device 10 controls The gas safety switch function of the gas proportional valve.
  • the first core assembly 16 of the electromagnetic drive device 10 opens the first valve port 101
  • the second core assembly 17 opens the second valve port 102
  • the gas flows from the first valve port 101 and the second valve port 102.
  • the second valve port 102 enters the main flow channel 1c.
  • the coil component is energized under the excitation action, and the regulating valve stem 22 carries the movable iron core 23 together.
  • the regulating valve rod 22 moves away from the limit regulating rod 42, the protrusion 232 gradually extends into the first recess 211, the regulating valve rod 22 exerts a force on the spring 244 through the spring seat 243, and the spring 244 is pressed to bring the sealing portion 241 relatively close to the third valve port 103, the opening degree of the third valve port 103 decreases accordingly, the pressure in the flow passage 151 gradually increases, and the back pressure chamber 31 of the pressure difference adjusting device 30 The pressure also increases, the differential pressure diaphragm 33 overcomes the spring force of the main valve spring 34 to push the differential valve stem so that the main valve sealing portion 35 pushes the main valve port 32, and the opening of the main valve port 32 gradually increases.
  • the gas flow from the main valve port 32 to the outlet 1b increases, and finally the gas flow to the external combustion chamber increases, realizing the higher outlet pressure adjustment mode of the gas proportional valve, which is set in the high-pressure outlet pressure mode used by the customer in use
  • the fixed pressure is generally 900pa.
  • the customer needs to be higher or lower than the pressure value to achieve further adjustment of the gas flow according to actual needs, it can be achieved by adjusting the valve stem 42 and the body 41, specifically by the claw
  • the surface 4133 is realized by the cooperation of the upper flange portion 2221 of the upper end portion 222. For example, the stroke of L1 is set to 1, and the stroke of L2 is set to 0.8.
  • the regulating valve stem 22 When the coil component is energized under the action of excitation, the regulating valve stem 22 will move The iron core 23 moves downward to approach the static iron core 21, the upper flange portion 2221 of the regulating valve rod 22 and the limit regulating rod 42 start to disengage from the abutting state, and the convex portion 232 gradually extends into the first concave portion 211. If the difference exists, the raised portion 232 does not completely abut the first recessed portion 211. At this time, the upper flange portion 2221 can abut the claw surface 4133 to prevent the movable iron core 23 from moving further downward.
  • an Allen wrench tool can be used to align with the matching hole through the opening at the upper end of the accommodating part 43 After operation, the main body 41 moves downward relative to the receiving portion 43 through the thread cooperation of the first threaded portion 444 and the second threaded portion 4121, and the pawl portion 413 extends from the receiving hole 433.
  • the valve stem 22 Under the action of the electromagnetic force, the adjustment The valve stem 22 carries the movable iron core 23 further to Actuates downwards, the raised portion 232 further extends into the first recessed portion 211, the regulating valve stem 22 further exerts a force on the spring 244 through the spring seat 243, and the spring 244 is pressed to bring the sealing portion 241 closer to the third valve port 103, The opening degree of the third valve port 103 decreases accordingly, the pressure in the flow passage 151 gradually increases, and the pressure of the back pressure chamber 31 of the pressure difference adjusting device 30 also increases, and the pressure difference diaphragm 33 overcomes the main valve spring.
  • the spring force of 34 pushes the differential pressure valve stem to make the main valve sealing portion 35 push the main valve port 32, the opening of the main valve port 32 gradually increases, the gas flow from the main valve port 32 to the outlet 1b increases, and finally flows to the outside
  • the gas flow in the combustion chamber has also been further increased, realizing the further adjustment of the gas flow rate of the gas proportional valve in the high-pressure outlet pressure adjustment mode to achieve a higher pressure adjustment mode; on the contrary, when the customer needs to adjust according to the actual needs of the system and other occasions In the high-pressure outlet pressure mode, the gas flow can be further adjusted to reduce the gas flow to achieve a lower pressure adjustment mode in the high-pressure outlet pressure adjustment mode.
  • the proportional adjustment device When the low-pressure outlet pressure adjustment mode of the gas proportional valve needs to be realized, the proportional adjustment device is powered off, the electromagnetic force disappears, the regulating valve stem 22 carries the movable iron core 23 relatively away from the static iron core 21, and the protrusion 232 gradually moves away from the first
  • the recessed portion 211, the upper flange portion 2221 of the regulating valve stem 22 is kept against the limit regulating valve stem 42 under the action of the spring 244, the force received by the spring seat 243 and the spring 244 is weakened, and the sealing portion 241 is relatively far away from the third valve
  • the opening of the third valve port 103 increases accordingly, and part of the gas flows from the pressure relief channel 17 to the outlet 1b.
  • the pressure in the flow channel 151 gradually decreases, and the pressure in the back pressure chamber 31 of the pressure difference adjusting device 30 also With this reduction, the opening of the main valve port 32 is reduced, the gas flow from the main valve port 32 to the outlet 1b is reduced, and the gas flow to the external combustion chamber is finally reduced, realizing the low-pressure outlet pressure adjustment of the gas proportional valve.
  • the pressure set in the low pressure outlet pressure mode used by the customer in use is generally 450pa.
  • a flat-head screwdriver can be used The upper end opening of the accommodating part and the matching hole of the matching part are matched with the groove of the limit adjustment rod 42 to make the limit adjustment rod 42 move upward or downward relative to the sleeve body 412.
  • the groove part can be matched with an external flat screwdriver tool to pass the third thread part 4122 Cooperate with the threads of the fourth threaded portion 421 to make the limit adjustment rod 42 move downward relative to the sleeve body 412, the limit adjustment rod 42 moves downward against the adjustment valve rod 22, and the adjustment valve rod 22 moves
  • the iron core 23 moves down together to get closer to the static iron core 21, and the gas flow is increased to achieve a higher pressure outlet pressure adjustment mode.
  • the outlet pressure adjustment mode has been described above, and will not be repeated here, so that the gas finally flows to the outer combustion chamber.
  • the flow rate is further increased accordingly, which realizes the increase adjustment of the gas flow rate of the gas proportional valve in the low pressure outlet pressure adjustment mode to achieve a higher pressure adjustment mode.
  • the groove can be passed through and the external flat screwdriver Tool cooperation, through the thread cooperation of the third threaded portion 4122 and the fourth threaded portion 421, so that the limit adjusting rod 42 moves upward relative to the sleeve body 412, and the adjusting valve rod 22 carries the moving iron under the action of the spring 244
  • the core 23 moves upwards to continue to keep abutting against the limit adjustment rod 42, the force of the spring seat 243 and the spring 244 is weakened, the diaphragm assembly 24 is relatively far away from the third valve port 103, and the gas flow is reduced to achieve a lower pressure.
  • the outlet pressure adjustment mode has been stated before, so I won’t repeat them here.
  • the gas flow to the external combustion chamber will be further reduced, realizing the gas proportional valve in the low-pressure outlet pressure adjustment mode.
  • the flow rate is reduced and adjusted to achieve a lower pressure outlet pressure adjustment mode.
  • the flow channel 151 stated in the present invention includes a first flow channel 151a, a second flow channel 151b, and a third flow channel 151c, and the first flow channel 151a, the second flow channel 151b, and the third flow channel 151c Connected with each other, the gas enters the flow passage 151 through the first valve port 101 and the second valve port 102.
  • the increase or decrease of the opening degree of the third valve port 103 can directly affect the pressure change in the flow passage 151.
  • the electromagnetic driving device 10, the proportional adjusting device 20 and the differential pressure adjusting device 30 can be respectively connected through the flow passage 151.
  • the gas proportional valve provided by the present invention is provided with the electromagnetic driving device 10, the proportional adjusting device 20 and the differential pressure adjusting device 30 and passing through Mutual cooperation can realize the high-pressure or low-pressure outlet pressure adjustment mode of the gas proportional valve.
  • the outlet pressure of the valve body can be proportionally linearly regulated.
  • the gas inlet pressure can also be represented by P1, I for current, and P2 for The secondary pressure is the outlet pressure.
  • the input power of the proportional adjustment device is proportional to the valve outlet pressure, that is, the smaller the current, the smaller the compression force of the movable iron core 23 on the diaphragm assembly through the spring, that is, the opening of the main valve port 32 The smaller, the larger the current, the larger the opening of the main valve port 32 is.
  • gas proportional valve provided by the present invention focuses on protecting the structure of the electromagnetic drive device, and the settings of the electromagnetic drive device applied to other structures can be flexibly set according to actual market needs.
  • the gas proportional valve provided by the present invention can simultaneously control the opening and closing of two valve ports by an electromagnetic coil, which reduces the manufacturing cost of the valve body, and at the same time serves as an important safety for controlling the on and off of the gas
  • the electromagnetic drive device can relatively reduce the number of parts by setting the two-stage control mode of the first core assembly and the second core assembly, so that the overall structure of the gas proportional valve is simpler, and the production cost of the product is reduced.
  • the other core component can still close the valve to prevent gas leakage, which ensures the safety of use.

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Abstract

一种燃气比例阀，该燃气比例阀的电磁驱动装置（10）包括静铁芯（13）、第一套筒部（15）、第一芯体组件（16）、第二芯体组件（17）、第一弹性件（18）以及第二弹性件（19），第一芯体组件（16）包括第一动铁芯（161）、第二套筒部（162）、第一密封部（163），第一密封部（163）能够关闭第一阀口（101），第二芯体组件（17）包括第二动铁芯（171）以及第二密封部（172），第二密封部（172）关闭第二阀口（102），当其中一道芯体组件失效无法关闭阀口时，另一道仍能关闭阀口，以保障燃气比例阀的使用安全。

Description

一种燃气比例阀
本申请要求2019年11月21日提交中国专利局、申请号为201911144050.6、发明名称为“一种燃气比例阀”的发明专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及燃气控制技术领域，特别涉及一种燃气比例阀。
背景技术
目前市场上的燃气比例阀，为了防止燃气的泄漏，通常采用至少两个阀口，两个阀口由两个独立的电磁阀进行打开或关闭，如其中一道阀门失效时，另一道阀门仍然能够对阀口进行关闭以保障燃气比例阀的使用安全。
发明内容
本发明的主要目的在于提供一种新结构的燃气比例阀，该燃气比例阀同样能够实现在其中一道阀门失效时，另一道阀门仍然能够对阀口进行关闭。
本发明提供一种燃气比例阀，包括本体、第一阀口以及第二阀口，还包括电磁驱动装置，所述电磁驱动装置包括静铁芯、第一套筒部、第一芯体组件、第二芯体组件、第一弹性件、第二弹性件，所述第一芯体组件包括第一动铁芯、第二套筒部、第一密封部，所述第二套筒部与所述第一动铁芯固定连接或限位连接，所述第一套筒部的下端与所述第一密封部固定连接或限位连接，所述第一弹性件与所述第一密封部相抵，，所述第二芯体组件包括第二动铁芯以及第二密封部，所述第二动铁芯的下端部与所述第二密封部固定连接或限位连接，所述第一动铁芯和/或所述第二动铁芯设有凹部，至少部分所述第二弹性件位于所述凹部且一端与所述第一动铁芯相抵另一端与所述第二动铁芯相抵；
当所述电磁驱动装置通电时，所述第一动铁芯能够带着所述第二套筒部以及所述第一密封部沿所述第一套筒部的第一套筒壁进行轴向上升运 动，以使所述第一密封部远离所述第一阀口，所述第二动铁芯能够带着所述第二密封部远离所述第二阀口，所述第一动铁芯能够与所述第二动铁芯相抵且所述第一动铁芯以及所述第二动铁芯靠近所述静铁芯；
当所述电磁驱动装置处于断电状态时，所述第一密封部关闭所述第一阀口且所述第二密封部关闭所述第二阀口，所述第一动铁芯与所述第二动铁芯之间形成有第一间距，所述第一动铁芯与所述第一套筒的封闭端之间形成有第二间距，所述第一间距小于所述第二间距。
本发明提供的燃气比例阀的电磁驱动装置包括静铁芯、第一套筒部、第一芯体组件、第二芯体组件、第一弹性件、第二弹性件，第一芯体组件包括第一动铁芯、第二套筒部、第一密封部，第一密封部能够关闭第一阀口，第二芯体组件包括第二动铁芯以及第二密封部，第二密封部能够关闭第二阀口，当其中一道芯体组件失效无法关闭阀口时，另一道仍能关闭阀口，以保障燃气比例阀的使用安全。
附图说明
图1为本发明提供的燃气比例阀的电磁驱动装置整体结构剖视图；
图2为本发明提供的燃气比例阀整体结构剖视图；
图3为本发明提供的燃气比例阀的比例调节装置整体结构剖视图；
图4为本发明提供的燃气比例阀的比例调节装置立体示意图。
具体实施方式
如图2所示的燃气比例阀，包括本体1、进口1a以及出口1b，本体1内形成有燃气主流道1c，燃气从进口1a流入由出口1b流出，本体1可以由铝合金压铸成型，本体1还设有第一阀口101以及第二阀口102，该燃气比例阀还包括电磁驱动装置10，该电磁驱动装置10与本体1固定连接。
电磁驱动装置10包括静铁芯13、第一套筒部15、第一芯体组件16、第二芯体组件17、第一弹性件18以及第二弹性件19，还包括外壳11以及线圈部件12，线圈部件12位于第一套筒部15的外周部，外壳11大致覆盖线圈部件12，第一芯体组件16能够接近或远离第一阀口101以对其打 开或关闭，第二芯体组件17能够接近或远离第二阀口102以对其打开或关闭，且在第一芯体组件16失效未能关闭第一阀口101时，第二芯体组件17仍然能够关闭第二阀口102以保障燃气比例阀的使用安全防止燃气的泄漏，通过对电磁驱动装置的优化设计，使其形成两段式的芯体组件各自控制阀口，使燃气比例阀整体结构相对更加简单基础上仍然能够保障使用安全性。
下面结合图1-图2详细介绍本发明提供的燃气比例阀的电磁驱动装置结构，电磁驱动装置10包括静铁芯13、第一套筒部15、第一芯体组件16、第二芯体组件17、第一弹性件18以及第二弹性件19，还包括外壳11以及线圈部件12，外壳11具有导磁性，线圈部件12包括骨架122，线圈部件12大致中心位置设有内孔121，至少部分静铁芯13位于该内孔121，静铁芯13可通过铆接、焊接等方式与外壳11的上部进行固定连接，也可通过打点限位等方式与外壳11的上部进行限位连接，本实施例中外壳11的上部设有开口部，静铁芯13设有与开口部相对应的凸起部，可通过铆接或焊接等方式进行固定连接，静铁芯13还设有凹陷部131，凹陷部131大致朝外壳11的上部凹陷且包括底壁131a以及侧壁131b，第一套筒部15大致呈一端封闭另一端开口的筒状结构，至少部分第一套筒部15即第一套筒部15的筒状主体部位于内孔121，第一套筒部15包括封闭端15a以及开口端15b，开口端15b包括朝周向方向延伸的延伸部151b，一部分延伸部151b相对靠近第一芯体组件16的第二套筒部162，又一部分延伸部151b相对远离第二套筒部162，一部分延伸部151b夹持于外壳11和第一弹性件18之间且上下端分别与外壳以及第一弹性件相抵，又一部分延伸部夹持于外壳11和密封件100之间且上下端分别与外壳以及密封件相抵，从而使电磁驱动装置整体与本体1固定并密封连接，防止燃气泄漏。封闭端15a位于凹陷部131且封闭端15a相对靠近底壁131a或者与底壁131a相抵，侧壁131b相对靠近第一套筒部15的第一套筒壁15c或与第一套筒壁15c相抵，第一芯体组件16包括第一动铁芯161、第二套筒部162以及第一密封部163，第一动铁芯161可由软磁材料制成，在不通电的状态下不带磁，一进入通电模式具有磁性作用，第一动铁芯161与第二套筒部162可通过焊接等方式固定连接或通过在第二套筒部上打点等方式实现与第一动铁芯的限 位连接，第一套筒部15和第二套筒部162均可由不导磁的不锈钢材料通过拉伸工艺加工制成，第二套筒部162的下端部与第二密封部163固定连接或限位连接，本实施例中两者可通过限位方式连接实现，第二密封部163包括帽状金属件以及橡胶件，帽状金属件大致包覆橡胶件，本实施例中第二套筒部162的翻边通过橡胶件的柔性变形作用挤入橡胶件内与其紧配，也可将第二套筒部162的下端延伸拉长进行翻边将第一密封部163进行限位，并将两者通过焊接等方式进行固定连接，第一弹性件18的上端与延伸部151b相抵另一端与第一密封部163相抵，断电时通过第一弹性件18的封阀作用力能够使第一密封部163关闭第一阀口101，电磁驱动装置还包括第一容纳腔A1和第二容纳腔A2，第一套筒部15大致限定该第二容纳腔A2，至少部分第一芯体组件16能够在第二容纳腔A2进行轴向升降运动，当线圈部件通电时，第一动铁芯161能够带着第二套筒部162以及第一密封部163沿第一套筒壁15c进行轴向上升运动，以使第一密封部163相对远离第一阀口101，第二动铁芯171能够带着第二密封部172远离第二阀口102，第二芯体组件17包括第二动铁芯171以及第二密封部172，第二动铁芯171可由软磁材料制成，第二动铁芯171包括本体171a以及阀杆172a，第二动铁芯171可为一体加工成型结构也可以是将本体171a以及阀杆172a分别加工成型后再进行固定连接方式成型，第一动铁芯161、第二套筒部162以及第一密封部163大致限定第一容纳腔A1，至少部分第二动铁芯171位于第一容纳腔A1，第二动铁芯171能够带着第二密封部172接近或远离第二阀口102，阀杆172a具有杆头1721a，杆头与第二密封部172固定连接或限位连接，第二密封部172可由橡胶制成，杆头通过橡胶件的柔性变形作用挤入与其紧配，第一密封部163设有开口，至少部分阀杆172a伸出该开口，至少部分第二动铁芯171能够在第一容纳腔A1沿第二套筒部162的第二套筒壁进行轴向升降运动，第一套筒部15套设于第一动铁芯161以及至少部分第二套筒部162的外周，在线圈部件未进行通电状态下，第一动铁芯161和第二动铁芯171之间形成有第一间距L1,该第一间距L1也是第一动铁芯与第二动铁芯之间形成的第一磁隙,第一动铁芯161具有上端面161a，上端面161a与第一套筒部15的封闭端15a之间形成有第二间距L2，第一间距L1小于第二间距L2，本实施例中第二动 铁芯171设有凹部171a，至少部分第二弹性件19位于该凹部171a且一端与凹部171a的底壁相抵另一端与第一动铁芯161的端面相抵，另外第一动铁芯161也可开设有该凹部，当第一动铁芯161开设该凹部时，第二弹性件19同样一端可与凹部的顶壁相抵另一端与第二动铁芯171的端面相抵，或者第一动铁芯161以及第二动铁芯171可同时开设有该凹部，第二弹性件19的一部分位于第一动铁芯161的凹部，第二弹性件19的又一部分位于第二动铁芯171的凹部且第二弹性件19的一端与第一动铁芯161相抵另一端与第二动铁芯171相抵。
电磁驱动装置10还包括有导磁件14，导磁件14套设于第一套筒部15的外周壁，导磁件14包括竖直部141以及翻边部142，导磁件14大致呈上下均开口的帽状结构，纵向方向上竖直部141夹持于骨架122与第一套筒部15之间且竖直部141的内壁与外周壁相抵，竖直部141的外壁与骨架122相抵，横向方向上，翻边部142夹持于骨架122和外壳11之间且上端与骨架122相抵，下端与外壳11的下部相抵，导磁件14通过第一套筒部15与第二动铁芯171相抵，通电状态时可将磁力传递至第二动铁芯171，为了保证较好的导磁作用，可将竖直部141设置得较长。
下面详细介绍电磁驱动装置的作动原理，如图1以及图2所示是电磁驱动装置处于全闭阀的位置状态，此时线圈部件12为断电模式，第一动铁芯161相对远离静铁芯13，第一动铁芯161的上端面161a与封闭端15a之间形成有第二间距L2，受第一弹性件18的施加的封阀作用力第一密封部163关闭第一阀口101，受第二弹性件19施加的封阀作用力第二密封部172关闭第二阀口102，第一动铁芯161与第二动铁芯171之间形成有第一间距L1即作为第一磁隙，当线圈部件12开始切换为通电状态时，受电磁力作用影响，具有导磁性的外壳11一部分磁力通过外壳11的上部传递至静铁芯13，另一部分磁里通过外壳11的下部传递至导磁件14以及第二动铁芯171，第一动铁芯161的上端面161a距离静铁芯13的侧壁131b之间形成有第二磁隙S2，第一动铁芯161的下端面与第二动铁芯171之间形成有第一磁隙S1，第一动铁芯161相对处于悬置的状态聚集于第二磁隙S2的磁力相对较少，而第一间距L1小于第二间距L2,第一磁隙S1相对较小，且受导磁件14的作用导磁件14能够将更多的磁力传递至第二动铁芯171， 磁力多聚集于第一磁隙S1,该部位所受的磁力较强，第二动铁芯171克服第二弹性件19的弹簧力，第一动铁芯161能够优先吸合第二动铁芯171，第一动铁芯161与第二动铁芯171两者相抵后消除第一磁隙S1即消除了第一间距L1，此时第一动铁芯161和第二动铁芯171形成了一个整体，因第一磁隙S1的消除导磁件14能够将较多的磁力传递至第一动铁芯161，从而聚集于第二磁隙S2的磁力也逐渐增多，从而第一动铁芯161和第二动铁芯171一起向上靠近静铁芯13，第二间距L2和第二磁隙S2也逐渐减小，此作动过程中，随着第一动铁芯161优先吸合第二动铁芯171，两者相抵后消除第一磁隙S1，第二密封部172逐渐远离第二阀口102，第二阀口102被优先打开，此后第一动铁芯161带着第二动铁芯171以及第二套筒部162以及第一密封部163向上靠近静铁芯13，第一阀口101也被打开，从而第一阀口101和第二阀口102均开启，电磁驱动装置处于全开状态；当线圈部件12由通电模式切换至断电模式时，随着电磁力消失第一动铁芯161与静铁芯13开始脱离，第二动铁芯171与第一动铁芯161由原先的相抵状态，第二动铁芯171随第一动铁芯161也进行关闭动作，而受第二弹性件19即封阀弹性的作用力第二芯体组件17关闭第二阀口102，同样受第一弹性件20的封阀作用力第一芯体组件16关闭第一阀口101，具体地，因电磁力消失并受第二弹性件19的封阀作用力使第二动铁芯171与第一动铁芯161相脱离，并使第二动铁芯171带着第二密封部172向下关闭第二阀口102，同时因电磁力消失并受第一弹性件18的封阀作用力第一密封部163向下关闭第一阀口101，第一动铁芯161以及第二套筒部162也随之向下作动，需要说明的是为了使第一芯体组件16以及第二芯体组件17能够顺利进行关阀，将第一弹性件18的弹性力设置成大于第二弹性件19的弹性力，如第二弹性件19的弹力更大则在闭阀状态时第二弹性件19能够将第一动铁芯161往上顶使其与第二动铁芯171脱离从而第一密封部163不能进行顺利关阀，或者设置成相等弹力状态时，也对第一动铁芯161施加向上的脱开力使第一密封部163不能进行良好的关阀，该结构中即使第一芯体组件16无法向下顺利进行关阀如第一动铁芯161与第一套筒部15卡死的状态下，受第二弹性件19的封阀弹性作用力也能够使第二动铁芯相对第一动铁芯脱开并带着第二密封部172向下关闭第二阀口102，或者当第二 芯体组件17无法顺利向下关闭第二阀口102时，在第一弹性件18的封阀力作用下，第一动铁芯161也能够带着第二套筒部162以及第一密封部163向下运动关闭第一阀口101以保障燃气比例阀的使用安全防止燃气的泄漏。
通过对电磁驱动装置结构10的优化设计，静铁芯13与第一动铁芯161之间仅隔有一层第一套筒部15，相对磁阻较小，且当线圈通电时，首先是第二动铁芯171克服第二弹性件19的弹力向上移动，第二动铁芯171向上移动的过程中，由于磁场的作用，第二动铁芯171越靠近第一动铁芯161其所获得的电磁力越大，电磁力越大所获得的加速度越大，当第一动铁芯161与第二动铁芯171相抵时第二动铁芯171的加速度和移动速度会对第一动铁芯161产生助推作用，使第一动铁芯161能够带着第二套筒部162以及第一密封部163更顺利地开启第一阀口101，从而实现第一芯体组件16的顺利开阀，且受第二动铁芯171的助推作动，第一芯体组件16开阀时所受到的力可来自第一动铁芯161的作用力以及线圈部12的电磁力，所需的电磁力就可以相对减少，可减少线圈绕组用量从而减少制造成本。
下面结合图2以及图3详细介绍比例调节装置20的具体结构，比例调节装置20包括容纳腔B、静铁芯21、调节阀杆22、动铁芯23以及膜片组件24，动铁芯23位于容纳腔B，调节阀杆22可选用金属材料与动铁芯固定连接或为一体结构，比例调节装置还包括套管28、外壳件29以及线圈部件，线圈部件位于静铁芯21的外周部，外壳件29具有导磁性且大致将线圈部件包围，套管28与静铁芯21固定连接或限位连接，套管28与静铁芯21大致限定容纳腔B，动铁芯23能够带着调节阀杆22沿着套管28的套管壁在容纳腔B进行轴向升降运动，动铁芯23整体呈倒凸字型位于静铁芯21的上方，静铁芯21相对靠近膜片组件24，在线圈部件通电的场合下受励磁作用，动铁芯23整体向下移动逐渐靠近静铁芯21，调节阀杆22随着动铁芯23一起向下运动，在线圈部件断电的场合下励磁作用消失，动铁芯23整体向上移动并逐渐远离静铁芯21，调节阀杆22随着动铁芯23一起向上运动，具体地，调节阀杆22包括本体部、上端部222以及下端部，静铁芯21包括第一凹陷部211、第一贯通孔212以及第二凹陷部213，第一凹陷部211位于静铁芯21的上部位置，第二凹陷部213位于静铁芯21 的下部位置，第一贯通孔212能够连通第一凹陷部211以及第二凹陷部213，动铁芯23包括第二贯通孔231以及凸起部232，该凸起部232是直径相较动铁芯23的大径部233较小的小径部，凸起部232与第一凹陷部211相适配，当线圈部件通电时受励磁作用，动铁芯23与调节阀杆22一起向下运动与静铁芯21相吸合，凸起部232能够伸入第一凹陷部211，当线圈部件断电时励磁作用消失，动铁芯23与调节阀杆22一起向上运动相对远离静铁芯21，凸起部232相对远离第一凹陷部211，动铁芯23的大径部233的外周壁能够沿着套筒壁在容纳腔B进行轴向移动，第一贯通孔212与第二贯通孔231同轴设置，调节阀杆22由上往下依次可通过第二贯通孔231、第一凹陷部211、第一贯通孔212以及第二凹陷部213，至少部分本体部221位于第一贯通孔212和第二贯通孔231，下端部223位于第二凹陷部213，静铁芯21还包括下端214，下端214与外壳件29固定连接，膜片组件24包括密封部241、膜片242、弹簧座243以及弹簧244，调节阀杆22的下端与膜片组件24固定连接或限位连接，本实施例中两者通过限位方式实现连接，调节阀杆22的下端部嵌入弹簧座内与其紧配，弹簧座243可为柔性的橡胶材质制成，通过柔性变形以使调节阀杆22的下端部223与弹簧座243进行紧密连接，另外调节阀杆22的下端也可通过过盈配合等方式实现与膜片组件的固定连接，弹簧244套设于密封部214的突起且一端与弹簧座相抵另一端与密封部214相抵，弹簧座以及至少部分弹簧244位于第二凹陷部211，该比例调节装置20还包括调节机构40，调节机构40包括本体部41、限位调节杆42以及容纳部43，本实施例中的本体部以及容纳部采用塑料件为一体结构，限位调节杆采用金属件，根据实际需要本体部或容纳部也可采用金属件制成，这里不对调节机构的各零部件的材质作具体限制，容纳部43与外壳件29固定连接或限位连接，容纳部43包括延伸部431、凸缘部432以及容纳孔433，容纳部43的上端与下端均呈开口状结构，容纳部43的内部还包括容纳孔壁，容纳孔壁上形成有与本体部41相配合的第一螺纹部444，具体地延伸部431可与套管28过盈配合，凸缘部432与外壳件29的外壁相抵以使容纳部43整体可与外壳件29固定连接或限位连接，或者也可以是凸缘部432以及外壳件29开设有对应的螺钉孔，通过螺钉拧紧的方式使凸缘部432与外壳件29固定连接，或者 也可以在凸缘部432下底面设置突起或凹部，外壳件29的表面设置与其相对应的凹部或突起，通过凹部与突起的对应配合使两者限位连接，只需将容纳部整体固定于外壳件29即可，本体部41至少部分位于容纳孔433，如需要也可将本体部41的上端延伸至容纳孔433外部，本体部41可由塑料或金属一体加工成型，本体部41的外壁设有与第一螺纹部444螺纹配合的第二螺纹部4121，本体部41整体呈筒状结构包括套筒本体412、卡爪部413、本体容纳腔414以及配合部415，卡爪部413由套筒本体412向下延伸并突起，本体容纳腔414包括缺口C，具体地，套筒本体412与卡爪部413之间形成有大致呈半环状的缺口C，圆筒状的套筒本体412的外周壁设有第二螺纹部4121，卡爪部413整体呈C字带开口状结构，卡爪部413包括开口4131、卡爪孔4132以及卡爪面4133，调节阀杆22的上端部222由开口4131置入卡爪孔4131并与其相适配，且能够通过缺口C伸入本体容纳腔414，卡爪面4133通过与上端部222的上端凸缘部2221的配合能够形成对动铁芯23向下作动的限位，静铁芯21的第一凹陷底面211a与动铁芯23的凸起部底面232a之间形成有距离L1，卡爪面4133与上端凸缘部2221之间形成有距离L2，且L1大于L2，调节阀杆22与开口4131之间可通过间隙配合带着动铁芯23进行轴向升降运动，配合部415包括呈内六角的配合孔结构，能够与外部L型的内六角扳手工具配合使用，本体容纳腔414与配合孔贯通，通过第一螺纹部444与第二螺纹部4121的螺纹配合作用使本体部41相对容纳部43进行向上或向下的运动，需要说明的是配合部的配合孔结构也可以是其他多边型或不规则形结构只需能够与外部扳手相配合使用，使本体部能够相对容纳部进行向上或向下运动即可。
比例调节装置20在装配各个零部件时可将调节机构40的本体部41以及限位调节杆42安装完成，或先将动铁芯23与调节阀杆22固定连接或为一体结构安装完成形成动铁芯阀杆组件，后将调节阀杆22的上端部由卡爪部413侧部的开口4131位置放入，后整体一起置入容纳腔B，使调节阀杆22对准第一贯通孔212，依次将安装膜片组件24的各个零部件装入，调节阀杆22受到弹簧244的复位作用上端凸缘部2221能够与限位调节阀杆42相抵，套筒本体412的内周壁还设有与限位调节杆42相配合的第三螺纹部4122，至少限位调节杆42位于本体容纳腔414，限位调节杆42的 下端也可伸入缺口C腔中，只需通电状态时能够实现与调节阀杆22进行相抵，限位调节杆42的外周壁设有第四螺纹部421，限位调节杆42的上端部设有大致呈一字形凹陷状的槽部，通过第三螺纹部4122与第四螺纹部421的螺纹配合作用，槽部通过与外部一字型螺丝刀工具配合以使限位调节杆42相对套筒本体412作向上或向下的运动，需要说明的是限位调节杆的上端部也可设置其他形状的槽部用于与外部工具相配合使用，只需保证限位调节杆能够相对套筒本体向上或向下作动即可。
比例调节装置20还包括导磁部组件50，该导磁部组件50包括第一导磁部51和第二导磁部52，第一导磁部51套设于静铁芯21的外周部并与其相抵，第二导磁部52套设于套管28的外周部并与其相相抵，第一导磁部51包括第一直段以及第一翻边段，第二导磁部52包括第二直段以及第二翻边段，第一直段与静铁芯21的外周部相抵，第一翻边段分别与线圈部件的骨架以及外壳件29的下部相抵，第二直段与套筒28的外周部相抵，动铁芯23通过套筒28与至少部分第二直段相抵，第二翻边段分别与线圈部件的骨架以及外壳件29的上部相抵，通过对比例调节装置进行通电，励磁作用下，线圈部件产生的磁力传递至整个外壳件29，静铁芯21的下端214与外壳件29固定连接，即静铁芯与外壳件具有一定的导磁面积，磁力可传递至静铁芯，通过设置第一导磁部51，增大与静铁芯21的配合面积可进一步增强磁力，另一部分磁力通过外壳件29的上部外壳传递至第二导磁部52，至少部分第二直段与动铁芯23具有间接相抵的面积，磁力可通过第二直段与动铁芯23的接触面积将磁力传递至动铁芯23，以使动铁芯和静铁芯两者相吸合进行产品的作动，通过设置导磁部组件增强了比例调节装置整体作动时候的导磁性能，另外为了增强比例调节装置的导磁性能也可将调节机构40整体再向上移至外壳件29外，只需保障其不脱离产品整体即可，动铁芯23以及调节阀杆22一起在轴向向上移动时能够与外壳件29的上部开口接触形成磁传导。
下面详细介绍比例调节装置20与电磁驱动装置10以及压差调节装置30配合实现燃气比例阀高压以及低压出口压力调节模式的作动原理，燃气从燃气比例阀的进口1a进入，电磁驱动装置10控制燃气比例阀的燃气安全开关作用，由电磁驱动装置10的第一芯体组件16开启第一阀口101， 第二芯体组件17打开第二阀口102，燃气由第一阀口101以及第二阀口102进入主流道1c，当需要实现燃气比例阀的高压出口压力调节模式时，可以将比例调节装置进行通电，线圈部件通电在励磁作用下，调节阀杆22带着动铁芯23一起向下运动靠近静铁芯21，调节阀杆22逐渐远离限位调节杆42，凸起部232逐渐伸入第一凹陷部211，调节阀杆22通过弹簧座243对弹簧244施加作用力，弹簧244受压带着密封部241相对靠近第三阀口103，第三阀口103的开度随之减小，流道151内的压力逐渐增大，压差调节装置30的背压腔31的压力也随之增大，压差膜片33克服主阀弹簧34的弹簧力推动压差阀杆使主阀密封部35顶开主阀口32，主阀口32的开度逐渐增大，由主阀口32流向出口1b的燃气流量增大，最终流向外部燃烧室的燃气流量增大，实现了燃气比例阀的较高的出口压力调节模式，使用中客户使用的高压出口压力模式下所设定的压力一般为900pa，当客户根据实际需要高于或低于该压力值以实现对燃气流量的进一步调节时，可通过调节阀杆42与本体部41的配合实现，具体地可通过卡爪面4133通过与上端部222的上端凸缘部2221两者的配合作用实现，例如设定L1的行程是1，L2的行程是0.8，线圈部件通电在励磁作用下，调节阀杆22带着动铁芯23一起向下运动靠近静铁芯21，调节阀杆22的上端凸缘部2221与限位调节杆42从相抵状态开始脱离，凸起部232逐渐伸入第一凹陷部211，由行程差的存在凸起部232并未与第一凹陷部211完全相抵，此时上端凸缘部2221可以与卡爪面4133相抵,以防止动铁芯23进一步的向下作动，当客户根据***等场合实际需要，在高压出口压力模式下实现对燃气的进一步调节以增大燃气流量实现更高的压力调节模式时，可使用内六角扳手工具通过容纳部43的上端的开口，对准配合孔进行操作，通过第一螺纹部444与第二螺纹部4121的螺纹配合作用使本体部41整体相对容纳部43向下运动，卡爪部413由容纳孔433伸出，在通电磁力作用下，调节阀杆22带着动铁芯23进一步向下作动，凸起部232进一步伸入第一凹陷部211，调节阀杆22通过弹簧座243进一步对弹簧244施加作用力，弹簧244受压带着密封部241进一步靠近第三阀口103，第三阀口103的开度随之减小，流道151内的压力逐渐增大，压差调节装置30的背压腔31的压力也随之增大，压差膜片33克服主阀弹簧34的弹簧力推动压差阀杆使主阀密封部35 顶开主阀口32，主阀口32的开度逐渐增大，由主阀口32流向出口1b的燃气流量增大，最终流向外部燃烧室的燃气流量也随之进一步增大，实现了燃气比例阀在高压出口压力调节模式下的对燃气流量的进一步调节以实现更高的压力调节模式；反之当客户根据***等场合实际需要在高压出口压力模式下实现对燃气的进一步调节减小燃气流量，以实现在高压出口压力调节模式下的较低压的调节模式时，可使用内六角扳手工具通过容纳部43的上端的开口，对准配合孔进行操作，通过第一螺纹部444与第二螺纹部4121的螺纹配合作用使本体部41整体相对容纳部43向上运动，卡爪部413的卡爪面4133与上端凸缘部相抵，本体部41带着调节阀杆22整体向上运动，弹簧座243以及弹簧244受到的作用力减弱，压力作用下，密封部241相对远离第三阀口103，第三阀口103的开度随之增大，部分燃气由泄压通道17流向出口1b，流道151内的压力逐渐减小，压差调节装置30的背压腔31的压力也随之减小，主阀密封部35靠近主阀口32，主阀口32的开度逐渐减小，由主阀口32流向出口1b的燃气流量减小，最终流向外部燃烧室的燃气流量减小，实现了燃气比例阀的在高压出口压力调节模式下对燃气流量的进一步调节以实现较低压的出口压力调节模式。
当需要实现燃气比例阀的低压出口压力调节模式时，比例调节装置断电，电磁力作用消失，调节阀杆22带着动铁芯23相对远离静铁芯21，凸起部232逐渐远离第一凹陷部211，调节阀杆22的上端凸缘部2221在弹簧244的作用下保持与限位调节阀杆42相抵，弹簧座243和弹簧244受到的作用力减弱，密封部241相对远离第三阀口103，第三阀口103的开度随之增大，部分燃气由泄压通道17流向出口1b，流道151内的压力逐渐减小，压差调节装置30的背压腔31的压力也随之减小，主阀口32的开度减小，由主阀口32流向出口1b的燃气流量减小，最终流向外部燃烧室的燃气流量减小，实现了燃气比例阀的低压出口压力调节模式，使用中客户使用的低压出口压力模式下所设定的压力一般为450pa，当客户根据实际需要高于或低于该压力值以实现对燃气流量的进一步调节时，可使用一字型螺丝刀通过容纳部的上端开口以及配合部的配合孔以与限位调节杆42的槽部相配合以使限位调节杆42相对套筒本体412作向上或向下的运动，当根据***需要实现低压出口压力调节模式下对燃气进行增大流量调节， 以实现在低压出口压力调节模式下的较高压的调节模式时，可将槽部通过与外部一字型螺丝刀工具配合，通过第三螺纹部4122与第四螺纹部421的螺纹配合作用，以使限位调节杆42相对套筒本体412向下的运动，限位调节杆42抵着调节阀杆22向下运动，调节阀杆22带着动铁芯23一起向下运动以进一步靠近静铁芯21，燃气流量增大以实现较高压的出口压力调节模式在前面已进行陈述，在此不在一一赘述，由此最终流向外部燃烧室的燃气流量也随之进一步增大，实现了燃气比例阀在低压出口压力调节模式下的对燃气流量的增大调节以实现更高的压力调节模式。反之当根据***需要实现低压出口压力调节模式下对燃气进行减小流量调节，以实现在低压出口压力调节模式下的更低压的出口压力调节模式时，可将槽部通过与外部一字型螺丝刀工具配合，通过第三螺纹部4122与第四螺纹部421的螺纹配合作用，以使限位调节杆42相对套筒本体412向上的运动，调节阀杆22在弹簧244的作用下带着动铁芯23向上运动，以继续保持与限位调节杆42相抵，弹簧座243与弹簧244所受的作用力减弱，膜片组件24相对远离第三阀口103，燃气流量减小以实现较低压的出口压力调节模式在前面已进行陈述，在此不在一一赘述，由此最终流向外部燃烧室的燃气流量也随之进一步减小，实现了燃气比例阀在低压出口压力调节模式下的对燃气流量的减小调节以实现更低压的出口压力调节模式。
需要说明的是，本发明中所陈述的流道151包括第一流道151a、第二流道151b以及第三流道151c，第一流道151a、第二流道151b以及第三流道151c三者相互连通，燃气由第一阀口101以及第二阀口102进入流道151内，通过第三阀口103的开度增大或减小能够直接影响流道151内压力的变化，第一流道151a相对靠近电磁驱动装置10且一端与第二阀口102连通，第二流道151b一端与第三阀口连通，第三流道151c相对靠近压差调节装置30且一端与背压腔31连通，通过流道151能够分别连通电磁驱动装置10、比例调节装置20以及压差调节装置30，本发明提供的燃气比例阀通过设置电磁驱动装置10、比例调节装置20以及压差调节装置30及通过相互的配合就能够实现燃气比例阀的高压或低压的出口压力调节模式。
通过对燃气比例阀的比例调节装置接入直流恒流电源时，阀体出口压 可进行比例线性调压，通过在燃气进口输入一次压即燃气进气压也可用P1表示，I表示电流，P2表示二次压即出口压，比例调节装置的输入电源与阀体出口压成正比关系，即电流越小动铁芯23通过弹簧对膜片组件的压缩力越小，即主阀口32的开度较小，电流越大主阀口32的开度越大，通过控制比例调节装置的输入电流线性，能够实现燃气比例阀出口压等比线性调节。
需要说明的是，本发明提供的燃气比例阀重点在于保护电磁驱动装置结构，对于电磁驱动装置应用于其他结构的设置可根据实际市场需要灵活设置。
本发明提供的燃气比例阀通过对电磁驱动装置结构的优化设计，能够由一个电磁线圈同时控制两道阀口的开启和关闭，降低了阀体的制造成本，同时作为控制燃气通断的重要安全电磁阀门构造，该电磁驱动装置通过设第一芯体组件以及第二芯体组件的两段式控制模式能够相对减少零部件数量，使燃气比例阀整体结构更加简单，降低了产品的生产成本，另在第一芯体组件失效或第二芯体组件失效时，另一个芯体组件仍然能关闭阀门防止燃气泄漏保障了使用安全性。
需要说明的是本发明所提及的“第一、第二”等序数词以及“上、下”等方位词均是基于说明书附图进行的描述，仅仅为区分不同零部件的命名方式不应该认为对各零部件有相关次序上的限定，以上仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应当视为本发明的保护范围。

Claims (10)

  1. 一种燃气比例阀，其特征在于，包括本体、第一阀口以及第二阀口，还包括电磁驱动装置，所述电磁驱动装置包括静铁芯、第一套筒部、第一芯体组件、第二芯体组件、第一弹性件、第二弹性件，所述第一芯体组件包括第一动铁芯、第二套筒部、第一密封部，所述第二套筒部与所述第一动铁芯固定连接或限位连接，所述第一套筒部的下端与所述第一密封部固定连接或限位连接，所述第一弹性件与所述第一密封部相抵，，所述第二芯体组件包括第二动铁芯以及第二密封部，所述第二动铁芯的下端部与所述第二密封部固定连接或限位连接，所述第一动铁芯和/或所述第二动铁芯设有凹部，至少部分所述第二弹性件位于所述凹部且一端与所述第一动铁芯相抵另一端与所述第二动铁芯相抵；
    当所述电磁驱动装置通电时，所述第一动铁芯能够带着所述第二套筒部以及所述第一密封部沿所述第一套筒部的第一套筒壁进行轴向上升运动，以使所述第一密封部远离所述第一阀口，所述第二动铁芯能够带着所述第二密封部远离所述第二阀口，所述第一动铁芯能够与所述第二动铁芯相抵且所述第一动铁芯以及所述第二动铁芯靠近所述静铁芯；
    当所述电磁驱动装置处于断电状态时，所述第一密封部关闭所述第一阀口且所述第二密封部关闭所述第二阀口，所述第一动铁芯与所述第二动铁芯之间形成有第一间距，所述第一动铁芯与所述第一套筒的封闭端之间形成有第二间距，所述第一间距小于所述第二间距。
  2. 根据权利要求1所述的燃气比例阀，其特征在于，所述电磁驱动装置还包括导磁件，所述导磁件套设于所述第一套管部的外周壁，所述导磁件包括,竖直部以及翻边部，所述燃气比例阀还包括外壳以及线圈部件，所述线圈部件包括骨架，所述竖直部的内壁与所述外周壁相抵，所述竖直部的外壁与所述骨架相抵，所述翻边部夹持于所述骨架与所述外壳之间，且所述翻边部的上端与所述骨架相抵，下端与所述外壳的下部相抵。
  3. 根据权利要求1所述的燃气比例阀，其特征在于，所述电磁驱动装置还包括第二容纳腔，所述第一套筒部大致限定所述第二容纳腔，至少部分所述第一芯体组件能够在所述第二容纳腔沿所述第一套筒壁进行轴向升降运动，所述第一动铁芯、所述第二套筒部以及所述第一密封部大致限定 所述第一容纳腔，至少部分所述第二动铁芯位于所述第一容纳腔且能够沿所述第二套筒部的第二套筒壁进行轴向升降运动。
  4. 根据权利要求3所述的燃气比例阀，其特征在于，所述第二动铁芯包括本体部以及阀杆，所述本体部与所述阀杆为一体结构或所述本体部与所述阀杆固定连接，所述第一密封部包括开口，至少部分所述阀杆由所述开口向外伸出，所述阀杆包括杆头，所述杆头与所述第二密封部固定连接或限位连接。
  5. 根据权利要求3所述的燃气比例阀，其特征在于，所述第一套筒部包括所述封闭端以及开口端，所述开口端设有延伸部，所述电磁驱动装置还包括外壳、线圈部件以及密封件，所述线圈部件设有内孔，至少部分所述第一套筒部位于所述内孔且所述第一套筒壁套设于所述第一动铁芯以及至少部分所述第二套筒部的外周部，相对靠近所述第二套筒部的一部分所述延伸部夹持于所述外壳与所述第一弹性件之间，且上端与所述外壳相抵下端与所述第一弹性件相抵，相对远离所述第二套筒部的又一部分所述延伸部夹持于所述外壳与所述密封件之间，且上端与所述外壳相抵，下端与所述密封件相抵。
  6. 根据权利要求1所述的燃气比例阀，其特征在于，所述第一弹性件的弹力大于所述第二弹性件的弹力。
  7. 根据权利要求1-6任一项所述的燃气比例阀，其特征在于，所述燃气比例阀还包括外壳以及线圈部件，所述线圈部件设有内孔，至少部分所述静铁芯位于所述内孔，所述静铁芯相对靠近所述外壳的上部，且所述静铁芯与所述外壳固定连接或限位连接，所述静铁芯包括凹陷部，所述凹陷部包括底壁以及侧壁，所述封闭端位于所述凹陷部且所述封闭端相对所述底壁或与所述底壁相抵，所述侧壁相对靠近所述第一套筒壁或与所述第一套筒壁相抵。
  8. 根据权利要求1-6任一项所述的燃气比例阀，其特征在于，所述第一动铁芯以及所述第二动铁芯为软磁材料制成。
  9. 根据权利要求1-6任一项所述的燃气比例阀，其特征在于，所述燃气比例阀还包括比例调节装置以及压差调节装置，所述比例调节装置包括外壳件、静铁芯、动铁芯、调节阀杆以及膜片组件，所述动铁芯位于所述 静铁芯的上方，所述调节阀杆的下端与所述膜片组件固定连接或限位连接，所述调节阀杆与所述动铁芯固定连接或为一体结构，所述动铁芯能够带着所述调节阀杆接近或远离所述静铁芯，所述比例调节装置还包括调节机构，所述燃气比例阀还包括第三阀口，所述膜片组件能够接近或远离所述第三阀口。
  10. 根据权利要求9所述燃气比例阀，其特征在于，所述本体设有流道，所述流道包括第一流道、第二流道以及第三流道，所述第一流道靠近所述电磁驱动装置且一端与所述第二阀口连通，所述第二流道的一端与所述第三阀口连通，所述第三流道靠近所述压差调节装置且所述第三流道的一端与所述压差调节装置的背压腔连通，所述第一流道、所述第二流道以及所述第三流道三者相互连通。
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