CN104633131B - Gas pressure regulator - Google Patents
Gas pressure regulator Download PDFInfo
- Publication number
- CN104633131B CN104633131B CN201310549497.8A CN201310549497A CN104633131B CN 104633131 B CN104633131 B CN 104633131B CN 201310549497 A CN201310549497 A CN 201310549497A CN 104633131 B CN104633131 B CN 104633131B
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- China
- Prior art keywords
- pressure
- gas
- room
- diaphragm
- wire coil
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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
- F16K31/02—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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
Abstract
A kind of gas pressure regulator, including a valve body, a pressure adjusting part and a wire coil.The valve body enters gas passage, an outlet passageway and a pressure-reducing chamber including one.The wire coil is located in the pressure-reducing chamber.Pressure regulation knot part includes a diaphragm, a moving member and a covering, and the diaphragm is located in the pressure-reducing chamber；The moving member is linked on the diaphragm, and there is the moving member magnetic portion to wear the wire coil, and the covering connects the moving member.The diaphragm is deformed because of the pressure change for entering the gas source that gas passage is connected, and then make the moving member drive the covering to change the opening degree for entering gas passage, and the magnetic portion moves relative to the wire coil and produces relative induced electromotive force, accurately to react the change of gas source pressure.
Description
Technical field
The present invention is relevant with gas pressure regulator, particularly relates to that the gas pressure regulator of gas source pressure can be reacted.
Background technology
Press, gas pressure regulator is disposed between gas source and gas, to adjust the gas that gas source is exported
Pressure, makes the gas pressure for being supplied to gas be maintained at stable pressure.Fig. 1 show known gas pressure regulator 1, bag
Contain a valve body 12 and a pressure adjusting part 14.
The valve body 12 has one to enter gas passage 122, an outlet passageway 124 and a pressure-reducing chamber 126.This enters gas passage 122 and supplied
A gas source by taking gas cylinder (not shown) as an example is connected to, the outlet passageway 124 is for being connected to a gas (not shown).
The pressure adjusting part 14 is located in the pressure-reducing chamber 126, includes a diaphragm 142, a spring, a moving member 146 and a masking
Part 148.The pressure-reducing chamber 126 is divided into one first room 126a and one second room 126b by the diaphragm 142, first room
126a connects this and enters gas passage 122 and the outlet passageway 124.The spring 144 abuts the valve body 12 and the diaphragm 142.The movement
Part 146 connects the diaphragm 142, and the covering 148 is articulated in valve body 12 and connects the moving member 146, and the covering has one to hide
Portion 148a is covered to be located to the position of gas passage 122 should be entered.Thus, as the pressure inside the gas cylinder is reduced, first appearance
Room 126a pressure moves down the pushing tow of spring 144 diaphragm 142 therewith reducing, drive the shielding portion of the covering 148 by
Gradually enter gas passage 122 away from this, to increase the opening degree that this enters gas passage 122, maintain output to the pressure of gas
In stable pressure.
Although known gas pressure regulator 1 has the function of regulation gas pressure, the pressure in gas source can not be really reflected,
Therefore the application of gas pressure regulator is limited.If can design can react the gas pressure regulator of gas source pressure change, when can increase
The purposes of gas pressure regulator.
The content of the invention
It is an object of the invention to provide a kind of gas pressure regulator, the change of gas source pressure can be reflected.
To achieve the above object, the gas pressure regulator that the present invention is provided, is arranged between a gas source and a gas,
Include a valve body, a diaphragm, a wire coil, a moving member and a covering.The valve body includes one and enters gas passage, an outlet
Passage and a pressure-reducing chamber, this enters gas passage and connects the gas source, and the outlet passageway connects the gas；The diaphragm subtracts located at this
In pressure chamber, and the pressure-reducing chamber is separated into one first room and one second room, first room connects this and enters gas passage with being somebody's turn to do
Outlet passageway, the diaphragm is deformed because of the pressure difference change of first room and second room；The wire coil located at this first
In one of room and second room；There is the moving member magnetic portion to be arranged in the wire coil, the moving member
Connect the diaphragm and the relative wire coil changes position with the deformation of the diaphragm；The covering is located at first room
In, the covering is driven by the diaphragm and changes the opening degree for entering gas passage.
Thus, during the gas source pressure change, the wire coil is influenceed to produce relative sensing by the magnetic force of the magnetic portion
Electromotive force, can accurately react the change of gas source pressure.
Brief description of the drawings
Fig. 1 is known gas pressure regulator sectional view.
Fig. 2 is the sectional view of the first preferred embodiment gas pressure regulator of the invention.
Fig. 3 is the sectional view of the first preferred embodiment gas pressure regulator of the invention, discloses magnetic areas in the second place.
Fig. 4 is the stereogram of the second preferred embodiment gas pressure regulator of the invention.
Fig. 5 is the sectional view in Fig. 4 along 5-5 lines.
Fig. 6 is the sectional view in Fig. 4 along 6-6 lines.
Fig. 7 is a sectional view, discloses the magnetic areas of the second preferred embodiment in the second place.
Primary clustering symbol description in accompanying drawing：
Known technology part
1 gas pressure regulator, 12 valve bodies, 122 enter gas passage, 124 outlet passageways, 126 pressure-reducing chambers, the rooms of 126a first,
The rooms of 126b second, 14 pressure adjusting parts, 142 diaphragms, 144 springs, 146 moving members, 148 coverings, 148a shielding portions.
Part of the present invention
2 gas pressure regulators, 20 valve bodies are covered on 22,24 pedestals, and 242 enter gas passage, 242a air intakes, 244 outlet passageways,
244a gas outlets, 26 pressure-reducing chambers, 262 first rooms, 264 second rooms, 28 support columns, 282 axis holes, 30 wire coils, 32 pressures
Power adjusting part, 322 diaphragms, 324 springs, 326 moving members, 326a magnetic portions, 328 coverings, 328a shielding portions, 34 computings electricity
Road, 36 wireless signal transtation mission circuits, 38 displays, 40 loudspeakers, 3 gas pressure regulators, 42 valve bodies are covered on 44,46 pedestals, 462
Enter gas passage, 462a air intakes, 464 outlet passageways, 464a gas outlets, 48 support columns, 482 axis holes, 50 first pressure-reducing chambers, 502
First room, 504 second rooms, 52 second pressure-reducing chambers, 522 the 3rd rooms, 524 the 4th rooms, 54 wire coils, 56 first pressures
Power adjusting part, 58 diaphragms, 60 springs, 62 moving members, 622 knobs, 622a axle sleeves, 624 guide rods, 624a magnetic portions, 626 turns
Disk, 626a cards, 626b convex portions, 64 coverings, 642 thimbles, 644 valve plugs, 66 second pressure adjusting parts, 661 diaphragms, 662
Spring, 663 axostylus axostyles, 664 connecting rods, 665 blocks, P1 first positions, the P2 second places.
Embodiment
For the present invention can be illustrated more clearly that, lifts preferred embodiment and coordinate accompanying drawing to describe in detail as after.
Fig. 2 and Fig. 3 are referred to, is the gas pressure regulator 2 of the first preferred embodiment of the invention, includes a valve body 20, one
The pressure adjusting part 32 of wire coil 30 and one.
The valve body 20 lid 22 on one is collectively formed with a pedestal 24, and a decompression is formed between lid 22 and the pedestal 24 on this
Room 26.The pedestal 24 has one to enter the outlet passageway 244 of gas passage 242 and one, and the one end for entering gas passage 242 forms an air intake
242a is connected outside the valve body 20, and air intake 242a is for the one gas source (not shown) by taking gas cylinder as an example of connection, and this enters gas
The other end of passage 242 connects the pressure-reducing chamber 26.One end of the outlet passageway 244 forms a gas outlet 244a for one gas device of connection
Has (not shown), the other end connects the pressure-reducing chamber 26.In the present embodiment, the pedestal 24 protrusion is formed with a support column 28, the branch
Dagger 28 has an axis hole 282.The wire coil 30 is sheathed on outside the support column 28.
The pressure adjusting part 32 includes a diaphragm 322, a spring 324, a moving member 326 and a covering 328, should
Diaphragm 322 is located in the pressure-reducing chamber 26, and the pressure-reducing chamber is separated into one first room 262 and one second room 264, and this first
This enters gas passage 242 and the outlet passageway 244 to the connection of room 262, and the support column 28 is located in first room 262, makes the gold
Belong to coil 30 to be also located in first room 262, wherein the support column 28 is from the wall of first room 262 toward the diaphragm
322 direction is convexed to form.The spring 324 is located in second room 264, and on the contact of spring 324 diaphragm 322 and this
Lid 22.The diaphragm 322 is deformed because of the pressure difference change formed between first room 262 and second room 264.The moving member
326 be in shaft-like, and its one end has a magnetic portion 326a, and the magnetic portion is magnet, is arranged in the axis hole 282 of the support column 28, makes
It is located in the wire coil 30.The aspect that the moving member 326 is magnet is also may be designed in practice.The moving member 326 connects
Connect the diaphragm 322 and the relative wire coil 30 changes position with the deformation of the diaphragm 322, make magnetic portion 326a in this
Moved in wire coil 30.The covering 328 is located in first room 262, is articulated in the pedestal 24, and the covering 328
The moving member is connected, there is the covering shielding portion to be located to that should enter the position of gas passage 242.The diaphragm 322 becomes because of pressure difference
The shielding portion 328a that the covering 328 is driven by the moving member 326 is changed into the opening degree for entering gas passage 242 during shape,
To adjust the pressure of gas.
Because magnetic portion 326a can be along the support column 28 in one shown in the first position P1 shown in Fig. 2 and Fig. 3
Displacement between the P2 of the second place, when the gas pressure for the gas cylinder output that air intake 242a is connected changes, first appearance
Pressure in room 262 changes therewith, the diaphragm 322 is driven the covering movement indirectly to adjust pressure, and drive the movement
Part magnetic portion 326a is moved, and promotes the wire coil 30 to produce corresponding induced electromotive force according to displacement and moving direction.
Size and direction by induced electromotive force, can correspond to out displacement and the direction of moving member 326, in other words, induced electromotive force
Change reflects the change of gas cylinder output pressure.Even if only small displacement, corresponding induction electric can be also produced
Gesture, in this way, the pressure of gas cylinder output can accurately be reacted.
For the induced electromotive force effectively produced with the wire coil 30, in the present embodiment, the gas pressure regulator 2
Also raised one's voice comprising a computing circuit 34, a wireless signal transtation mission circuit 36, the display 38 and one being arranged on this on lid 22
Device 40.The computing circuit 34 is electrically connected with the wire coil 30, and the computing circuit 34 receives the sensing that the wire coil 30 is produced
Electromotive force, and the magnetic portion 326a displacement and direction of displacement are extrapolated using induced electromotive force size and direction, recycle
The displacement calculation obtains the change of the pressure value of the gas cylinder, in other words, when the wire coil 30 produces predetermined induced electricity
During kinetic potential, represent magnetic portion 326a in the scheduled time intrinsic displacement preset distance, i.e. the pressure of the gas cylinder produces predetermined number
The change of value.Thus, the pressure value of gas cylinder just can be extrapolated by way of producing induced electromotive force with magnetic force change.
The wireless signal transtation mission circuit 36 is electrically connected with the computing circuit 34, and the wireless signal transtation mission circuit 36 is by the computing
The pressure value that circuit 34 is calculated is converted into including after a wireless signal of the pressure value and sent.Utilize the electronics of an outside
Device is received after the wireless signal, is shown in the display on the electronic installation of outside, and current pressure value is watched for user.
In addition, in the computing circuit 34 can a built-in preset pressure value in advance, the preset pressure value is minimum tolerable
Critical pressure value, when the gas pressure of the gas cylinder is less than the preset pressure value, representing gas will use up.When the computing circuit
When 34 pressure values calculated are less than the preset pressure value, the computing circuit produces an alerting, and the wireless signal sends electricity
Road 36 alerting produced by the computing circuit 34 is converted into include sent after a wireless signal of the alerting to
Outside electronic installation, to allow user to learn, gas will be used up, and can prepare new gas cylinder in advance, as preparation more alternatively
With.
The display 38 and the loudspeaker 40 are to be electrically connected with the computing circuit 34 individually, and the display 38 shows the computing
The pressure value that circuit 34 is calculated, allows user directly to watch current pressure value on gas pressure regulator 2.The computing circuit
34 control the loudspeaker 40 to send sound when the pressure value calculated is less than the preset pressure value, so that user can learn watt
This will be used up.
As shown in the above description, the present invention makes the diaphragm 322 drive moving member 326 using the change of the pressure in gas source
The characteristic of displacement, allows magnetic portion 326a to be moved in wire coil 30 and produce corresponding induced electromotive force, to reflect gas
The change of source pressure.By the setting of the computing circuit 34, wireless signal transtation mission circuit 36, display 38 and loudspeaker 40, go back
Induced electromotive force can be converted into pressure value to transmit to outside, allow user to learn the pressure value in gas source.
In addition, in practice, the support column 28 and the wire coil 30 also may be disposed in second room 264, and be somebody's turn to do
The magnetic portion 326a of moving member 326 is similarly positioned in second room 264, and such magnetic portion 326a can equally stretch into the support
Relatively moved in the axis hole 282 of post 28, to produce corresponding induced electromotive force.
It is to illustrate by taking the gas pressure regulator 2 with a pressure-reducing chamber as an example in the above-described first embodiment, provides again below
Another gas pressure regulator, equally can correspond to gas source pressure change and obtain relative induced electromotive force.Fig. 4 to Fig. 7 institutes
The gas pressure regulator 3 of the second preferred embodiment of the invention is shown as, it has the structure similar to the first preferred embodiment, includes
One valve body 42, a wire coil 54, a first pressure adjusting part 56 and a second pressure adjusting part 66.
The valve body 42 includes the pedestal 46 of lid 44 and one on one, is formed with one first pressure-reducing chamber on this between lid 44 and the pedestal 46
50 and one second pressure-reducing chamber 52.The pedestal has two to enter the outlet passageway 464 of gas passage 462 and one.Respectively this enters the one of gas passage 462
End forms gas sources of the air intake 462a for connection by taking gas cylinder (not shown) as an example, and respectively this enters the other end of gas passage 462 company
Lead to first pressure-reducing chamber 50.One end of the outlet passageway 464 forms a gas outlet 464a for one gas (not shown) of connection,
The other end connects first pressure-reducing chamber 50；The outlet passageway 464 is also communicated with second pressure-reducing chamber 52.The pedestal 46 protrusion is formed
There is a support column 48, the support column 48 has an axis hole 482.The wire coil 54 is sheathed on outside the support column 48.
The first pressure adjusting part 56 includes a diaphragm 58, a spring 60, a moving member 62 and two coverings 64.Should
First pressure-reducing chamber 50 is separated into one first room 502 and one second room 504 by diaphragm 58, and first room 502 connection should
Enter gas passage 462 and the outlet passageway 464, the support column 48 is located in first room 502, the contact of spring 60 diaphragm 58
And lid 44 on this.The moving member 62 of the present embodiment includes a knob 622, a guide rod 624 and a rotating disk 626, wherein, the knob
622 on this lid 44, and the knob 622 lid 44 can rotate relative to this on, the knob 622 have an axle sleeve 622a positioned at this
In two rooms 504.The guide rod 624 links with the diaphragm 58, and its one end is inserted in axle sleeve 622a, and the other end has a magnetic portion
624a is arranged in the axis hole 482 of the support column 48.The guide rod 624 is driven by the diaphragm 58 and makes magnetic portion 624a along in figure
Moved between the second place P2 shown in first position a P1 and Fig. 7 shown in 5.The rotating disk 626 is in the form of annular discs, positioned at this first
In room 502 and connect the guide rod 624, the rotating disk 626 has a card 626a, and card 626a protrusions are formed with a convex portion
626b。
Respectively the covering 64 includes a thimble 642 and a valve plug 644, and respectively the one end of thimble 642 connects the respectively valve plug
644, the other end abuts the card 626a of the rotating disk 626, the valve plug 644 be located at it is corresponding enter gas passage 462 in.The magnetic portion
624a, when the knob 622 is rotated by user, will drive the rotating disk 626 to rotate, convex portion 626b can when the P1 of the first position
Indivedual pushing tow two thimbles 642, make the valve plug 644 be turned on and off it is corresponding enter stand in channel.And the first pressure adjusting part
56 change wherein one opening degree for entering gas passage 462 by the valve plug 644, and with the pressure adjusted in first room 502
Effect.
Please coordinate shown in Fig. 7, with the reduction of the gas amount of wherein one barrel gas cylinder, the pressure of first room 502 by
It is decrescence few, and the pushing tow of spring 60 diaphragm 58, the magnetic portion 624a of the guide rod 624 is gradually moved toward second place P2 directions
It is dynamic, meanwhile, the thimble 642 of the card 626a contacts of the rotating disk 626 two covering 64 two enters gas passage to open this simultaneously
462, another gas cylinder is continued supply gas.Two enter at this after gas passage 462 all opens, the first pressure adjusting part 56 is same
Sample can be changed this by two valve plug 644 and two enter the opening degree of gas passage 462 and adjust the pressure of first room 502.
The second pressure adjusting part 66 includes a diaphragm 661, a spring 662, an axostylus axostyle 663, a connecting rod 664 and one
Block 665.Second pressure-reducing chamber 52 is separated into one the 3rd room 522 and one the 4th room 524 by the diaphragm 661.3rd holds
Room 522 is communicated with the outlet passageway 464, the contact of spring 662 diaphragm 661 and lid 44 on this.The axostylus axostyle 663 is linked to the film
Piece 661；The connecting rod 664 is articulated in the pedestal 46, and the one end of connecting rod 664 connects the axostylus axostyle 663, and the other end connects the block
665.The block 665 is located in the path of the outlet passageway 464, thus, during the pressure change of the 3rd room 522, the diaphragm
661 deformations drive the block 665 to move indirectly, to change the opening degree of the outlet passageway 464, to adjust the pressure of gas.
By said structure, the moving member 62 magnetic portion 624a between first position P1 and second place P2
When mobile, the wire coil 54 is influenceed by magnetic portion 624a displacements and produces relative induced electromotive force, similarly, is utilized
The change of induced electromotive force can learn relative displacement and direction, to reflect the pressure change of two gas cylinder.In addition,
The upper lid 44 of the gas pressure regulator 3 is again provided with being same as the computing circuit 34 of the first preferred embodiment, wireless signal transmission
Circuit 36, display 38 and loudspeaker 40.So that induced electromotive force to be converted into the pressure value of gas cylinder, and transmit to outside, allow
User can learn the pressure value of gas cylinder.
Mentioned above, the present invention can accurately judge magnetic using the induced electromotive force produced between magnetic portion and wire coil
Property portion's movement position, and then react the change of gas source pressure.Gas pressure regulator is allowed to be had more in addition to adjusting gas pressure
React effect of gas source pressure change.
Preferably possible embodiments of the invention are the foregoing is only, description of the invention is applied such as and model is applied for a patent
Equivalent structure change carried out by enclosing, ought to be included in the scope of the claims of the present invention.
Claims (7)
1. a kind of gas pressure regulator, is arranged between a gas source and a gas, comprising：
One valve body, includes one and enters gas passage, an outlet passageway and a pressure-reducing chamber, and this enters gas passage and connects the gas source, and this goes out
Gas passage connects the gas；
One diaphragm, is separated into one first room and one second room, first room in the pressure-reducing chamber, and by the pressure-reducing chamber
Connect this and enter gas passage and the outlet passageway, the diaphragm is deformed because of the pressure difference change of first room and second room；
One wire coil, in first room；
One moving member, is arranged in the wire coil with a magnetic portion, and the moving member connects the diaphragm and with the diaphragm
Deform and relative wire coil change position；And
One covering, in first room, the covering is driven by the diaphragm and changes the opening degree for entering gas passage；
Wherein, there is the valve body support column to be located in first room, and the support column has an axis hole, and the wire coil is arranged
In outside the support column, the magnetic portion of the moving member is protruded into the axis hole；
Wherein, the support column is convexed to form from the direction of wall toward the diaphragm of first room；
Wherein, the magnetic portion of the moving member relative to the wire coil move when, promote the wire coil to produce corresponding sensing
Electromotive force, and the change changed corresponding to the gas source output pressure of induced electromotive force.
2. gas pressure regulator according to claim 1, wherein, the covering connects the moving member.
3. gas pressure regulator according to claim 1 is comprising there is a computing circuit to be electrically connected with the wire coil,
The induced electromotive force that the computing circuit receives wire coil generation calculates the pressure ground pressure value in the gas source according to this.
4. gas pressure regulator according to claim 3 is comprising there is a wireless signal transtation mission circuit to be electrically connected with the fortune
Calculate circuit；The pressure value that the computing circuit is calculated is converted into including a nothing of the pressure value by the wireless signal transtation mission circuit
Sent after line signal.
5. gas pressure regulator according to claim 3 is comprising there is a wireless signal transtation mission circuit to be electrically connected with the fortune
Calculate circuit；A default pressure value is had in the computing circuit, when the pressure value that the computing circuit is calculated is less than the default pressure
During value, the computing circuit produces an alerting, and the wireless signal transtation mission circuit is by the alerting produced by the computing circuit
It is converted into including after a wireless signal of the alerting and sends.
, should 6. gas pressure regulator according to claim 3 is comprising there is a display to be electrically connected with the computing circuit
Display shows the pressure value that the computing circuit is calculated.
, should 7. gas pressure regulator according to claim 3 is comprising there is a loudspeaker to be electrically connected with the computing circuit
A default pressure value is had in computing circuit, when the pressure value that the computing circuit is calculated is less than the default pressure value, the fortune
Calculating circuit controls the loudspeaker to send sound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310549497.8A CN104633131B (en) | 2013-11-07 | 2013-11-07 | Gas pressure regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310549497.8A CN104633131B (en) | 2013-11-07 | 2013-11-07 | Gas pressure regulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104633131A CN104633131A (en) | 2015-05-20 |
| CN104633131B true CN104633131B (en) | 2017-10-20 |
Family
ID=53212205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310549497.8A Active CN104633131B (en) | 2013-11-07 | 2013-11-07 | Gas pressure regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104633131B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI669464B (en) | 2018-01-25 | 2019-08-21 | 關隆股份有限公司 | Gas appliance, gas valve and control method thereof |
| CN110307371A (en) * | 2018-03-20 | 2019-10-08 | 关隆股份有限公司 | Gas and gas valve and its control method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0731021Y2 (en) * | 1988-12-26 | 1995-07-19 | エヌオーケー株式会社 | Solenoid valve device |
| JP3468457B2 (en) * | 1999-07-14 | 2003-11-17 | Ｓｍｃ株式会社 | Switching valve with position detection function |
| US6505640B1 (en) * | 2001-07-09 | 2003-01-14 | Richard Lin | Gas-pressure regulator |
| JP2008309309A (en) * | 2007-06-18 | 2008-12-25 | Mitsubishi Electric Corp | Fluid control solenoid valve |
| CN202402654U (en) * | 2011-12-06 | 2012-08-29 | 萧政胜 | Closable gas regulator |
-
2013
- 2013-11-07 CN CN201310549497.8A patent/CN104633131B/en active Active
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| Publication number | Publication date |
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| CN104633131A (en) | 2015-05-20 |
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