CN102155619B - Corrosion resistance precision gas voltage regulator - Google Patents
Corrosion resistance precision gas voltage regulator Download PDFInfo
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- CN102155619B CN102155619B CN201010606611A CN201010606611A CN102155619B CN 102155619 B CN102155619 B CN 102155619B CN 201010606611 A CN201010606611 A CN 201010606611A CN 201010606611 A CN201010606611 A CN 201010606611A CN 102155619 B CN102155619 B CN 102155619B
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Abstract
The invention relates to a corrosion resistance precision gas voltage regulator; in the regulator, a flat plate is fixed above a gas tank; a membrane on the flat plate is provided with a through hole so that the gas tank is communicated with the membrane; a zero position cavity cover covers the upper side of the membrane; the bottom end of a lower need-shaped rod is put on the upper surface of the membrane; the top end of the lower need-shaped rod props up a landing leg of a lever of a sensor; the bottom end of an upper need-shaped rod is put on the other landing leg of the level of the sensor; the top end of the upper need-shaped rod props up one end of a small lever; the other end of the small lever is rested on a small ball which is arranged on an airflow tube; the upper side of the airflow tube corresponds to one end of a big level; the other end of the big lever is connected with a steering yoke; the lower part of the airflow tube is arranged in a servo device and drives a disc seat to move through the elongation or contraction of a spring box of the servo device fixed on the disc seat, thereby driving the airflow tube to move up and down in a shell of the servo device. The regulator can realize the automatic regulation of pressure in strong corrosive gas medium, has constant voltage function and high voltage regulation precision and is stable in running.
Description
Technical field
The present invention relates to the gaseous tension stabilising arrangement, be specifically related to a kind of being able to bear strong corrosion property gas medium pressure and regulate precision apparatus automatically.
Background technology
Chinese patent (patent No. is 200680009421.4) discloses a kind of gas regulator, and it limits line through an air throttle first and vertically moves, and changes the air throttle openings of sizes, and adjustments of gas is through amount.What the opposing air throttle moved is the spring for governor unit.
Chinese patent (patent No. is 01803599.x) also discloses another kind of pressure governor, and the closure member through place, controlled pressure medium inlet has a valve spring at the closure member upper support, and the valve spring other end is bearing in the spring guide sleeve.Valve spring was compressed or extends when pressure changed, and closure member is opened or closed, and adjustments of gas is through amount.
Existing gaseous tension stabilising arrangement, when using the deep-etching gas medium, its pressure experience element is spring element and directly acts on closure member; The influence of corrosion-vulnerable gas; One-piece construction is simple, but exists precision low, and the life-span is short; Shortcomings such as long-time running poor stability, the steady in a long-term use under the special gas ambient condition do not suit.
Summary of the invention
The object of the present invention is to provide a kind of pressure that is implemented in the severe corrosive gas medium to regulate automatically, reach the constant voltage effect, the pressure degree of regulation is high, and is stable, the life-span long, a kind of corrosion-resistant accurate gas pressurizer of easy care.
Realize the technical scheme of the object of the invention: a kind of corrosion-resistant accurate gas pressurizer, this device comprises columniform gas tank, in the gas tank upper fixed flat board is arranged; Gas tank one end connects gas inlet pipe, and the other end connects gas output tube; Be loaded on gas inlet pipe or gas output tube one end on the valve seat behind the mounted valve; Valve other end correspondence is arranged on the valve body in the gas tank; Valve body connects valve lever, and the valve lever upper end connects the commentaries on classics fork that is arranged on the flat board.On flat board, be fixed with diaphragm, dull and stereotyped corresponding diaphragm place has through hole, makes gas tank communicate with diaphragm through this through hole; The diaphragm top is covered with zero-bit chamber lid.Following aciculiform bar is placed in the lid of zero-bit chamber, and a supporting leg that is the sensor lever of " ∏ " shape is fixed on zero-bit chamber lid sidewall, and the bottom of following aciculiform bar is placed on diaphragm upper surface, and the top of following aciculiform bar heads on a supporting leg of the sensor lever.Another supporting leg that is the sensor lever of " ∏ " shape is located at the side of covering, zero-bit chamber, and the bottom of last aciculiform bar is placed on this supporting leg upper surface, and the top of last aciculiform bar heads on small lever one end; The small lever other end rides on the bead; Bead is placed on the gas flow tube; One end of the corresponding big lever in gas flow tube top, the other end of big lever connects changes fork.The gas flow tube bottom is positioned in the servomechanism installation, in servomechanism installation, the gas flow tube bottom is fixed with dish seat, through being fixed on elongation of servomechanism installation spring box or the action of contraction bands Moving plate seat on the dish seat, moves up and down in the servomechanism installation housing thereby drive gas flow tube; The servomechanism installation bottom connects compressed air hose.
Aforesaid a kind of corrosion-resistant accurate gas pressurizer, its described diaphragm adopts beryllium-bronze material to process.Described gas tank, valve seat, valve, valve lever and flat board all adopt carbon steel to process the first copper facing in back nickel plating again, perhaps adopt stainless steel to process.
Aforesaid a kind of corrosion-resistant accurate gas pressurizer, it is fixed with case on flat board, diaphragm, zero-bit chamber lid, down aciculiform bar, sensor lever, go up aciculiform bar, small lever, gas flow tube, servomechanism installation, big lever and change fork and be placed in the case.
Aforesaid a kind of corrosion-resistant accurate gas pressurizer, it is provided with the film upper spring between diaphragm and zero-bit chamber lid.
Aforesaid a kind of corrosion-resistant accurate gas pressurizer, two limits swing up and down around fulcrum two about its small lever, and two limits swing up and down around fulcrum one about big lever; Between big lever and zero-bit chamber lid, be connected with balancing spring, with control big lever oscillating quantity; Be provided with closing spring at big lever with changeing the fork junction, to guarantee big lever and effective connection of changeing fork; Between small lever and big lever, be provided with recovery springs, so that the small lever oscillating quantity is suppressed.
Aforesaid a kind of corrosion-resistant accurate gas pressurizer, it adjusts the sensor lever end that spring one end connects " ∏ " shape at a distance, and the other end connects gear train, and gear train connects motorized reducer.
Aforesaid a kind of corrosion-resistant accurate gas pressurizer, its described motorized reducer place is provided with and connects disk light beam encoder; Described gas flow tube top is provided with grating displacement sensor.
Aforesaid a kind of corrosion-resistant accurate gas pressurizer, the zero-bit chamber that is made up of diaphragm and zero-bit chamber lid is connected a gas piping, and remaining pressure in the zero-bit chamber through this gas piping is that a steady state value and pressure are less than 100Pa.
Effect of the present invention is:
The pressure that corrosion-resistant accurate gas pressurizer of the present invention can be implemented in the severe corrosive gas medium is regulated automatically, reaches the constant voltage effect; Through changing the valve and the valve body of different-diameter, can adapt to the pressure and the flow operation interval of certain limit; Can realize the purpose of remote adjustment and monitoring parameter; It is applied widely to have pressure, and the pressure degree of regulation is high, and stable, the life-span is long, characteristics such as easy care.Concrete effect is following:
(1) gas tank adopts carbon steel to manufacture among the present invention, can reach high corrosion resistance after the plating copper and nickel;
(2) diaphragm adopts beryllium-bronze material, has solved sensing element and promptly will have high strength, has high anti-deep-etching performance again, can also experience the subtle change of pressure exactly and pass to gear train simultaneously;
(3) through zero-bit chamber lid, down aciculiform bar, sensor lever, go up the gear train that aciculiform bar etc. constitutes, can receive the diaphragm displacement of size arbitrarily effectively, and amplify and transmit; The servomechanism installation that adopts gas flow tube, dish seat etc. to constitute utilizes pressurized air to regulate power as voltage stabilizer, has ensured device work steady in a long-term effectively.
(4) through adopting the variation in valve seat and valve body gap, change gas passage area, reach the automatic stabilization of pressure, accurate and timely;
(5) through grating displacement sensor and disk light beam encoder, successfully realize digitized measurement and long-range adjustment and monitoring.
Description of drawings
Fig. 1 is the front view of a kind of corrosion-resistant accurate gas pressurizer of the present invention;
Fig. 2 is the vertical view of a kind of corrosion-resistant accurate gas pressurizer of the present invention;
Fig. 3 is the partial view of a kind of corrosion-resistant accurate gas pressurizer of the present invention.
Among the figure: 1. gas tank; 2. dull and stereotyped; 3. change fork; 4. case; 5. closing spring; 6. gear train; 7. big lever; 8. adjust spring at a distance; 9. go up the aciculiform bar; 10. fulcrum one; 11. small lever; 12. sensor lever; 13. balancing spring; 14. fulcrum two; 15. recovery springs; 16. bead; 17. grating displacement sensor; 18. servomechanism installation spring box; 19. servomechanism installation; 20. gas flow tube; 21. dish seat; 22. compressed air hose; 23. zero-bit chamber lid; 24. following aciculiform bar; 25. film upper spring; 26. diaphragm; 27. disk light beam encoder; 28. motorized reducer; 29. valve lever; 30. gas output tube; 31. valve body; 32. valve; 33. valve seat; 34. gas inlet pipe.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment a kind of corrosion-resistant accurate gas pressurizer of the present invention is further described.
Extremely shown in Figure 3 like Fig. 1; A kind of corrosion-resistant accurate gas pressurizer of the present invention comprises gas tank 1; The stack shell of gas tank 1 is cylindrical; In gas tank 1 upper fixed flat board 2 is arranged, on dull and stereotyped 2, be fixed with case 4, be placed with diaphragm 26, zero-bit chamber lid 23, following aciculiform bar 24, sensor lever 12 in the case 4, go up parts such as aciculiform bar 9, small lever 11, gas flow tube 20, servomechanism installation 19, big lever 7 and commentaries on classics fork 3.
Gas tank 1 relative position is provided with the connecting pipe of two equal diameters, and one is gas inlet pipe 34, and another is a gas output tube 30.The valve seat 33 of standard is assemblied on the gas inlet pipe 34 (or gas output tube 30), and the valve 32 of different size is installed on the valve seat 33, and relative position is provided with the valve body 31 of corresponding specification in the gas tank 1.Valve body 31 connects valve lever 29, and valve lever 29 upper ends connect the commentaries on classics fork 3 that is arranged on dull and stereotyped 2.Drive valve levers 29 actions through commentaries on classics fork 3, thereby realize the Push And Release of valve body 31 and valve 32, i.e. adjustable gas pressure or flow.When valve lever 29 swings, valve body 31 changes with valve 32 gaps, and the gas flow of the voltage stabilizer of flowing through increases or reduces, and pressure changes thereupon.When the gap was 0, voltage stabilizer cut out.Gas tank 1, valve 32, valve seat 33, valve lever 29, dull and stereotyped 2 these parts that contact with operation material all adopt carbon steel to make the back plating copper and nickel or directly adopt stainless steel to make, and have solved corrosion resistant problem.
On dull and stereotyped 2, be fixed with diaphragm 26, dull and stereotyped 2 corresponding diaphragms 26 places have through hole, make gas tank 1 communicate with diaphragm 26 through this through hole.Diaphragm 26 tops are covered with zero-bit chamber lid, between diaphragm 26 and zero-bit chamber lid, are provided with film upper spring 25.Diaphragm 26 belows and gas tank 1 constitute working chamber; Diaphragm 26 tops and zero-bit chamber lid 23 constitute the zero-bit chamber.Diaphragm 26 is key elements of voltage stabilizer, adopts beryllium-bronze material to manufacture.Can connect a gas piping at zero-bit chamber place, keep pressure in zero-bit chamber less than the pressure in the working chamber through this gas piping, and keep in the zero-bit chamber permanent low pressure (≤100Pa), guarantee that working chamber and zero-bit chamber form certain pressure differential.
Following aciculiform bar 24 is placed in the lid of zero-bit chamber, and a supporting leg that is the sensor lever 12 of " ∏ " shape is fixed on zero-bit chamber lid sidewall.The bottom of following aciculiform bar 24 is placed on diaphragm 26 upper surface central points, and the top of following aciculiform bar 24 heads on the above-mentioned supporting leg of sensor lever 12.
Another supporting leg that is the sensor lever 12 of " ∏ " shape is located at the side of covering, zero-bit chamber, and the bottom of last aciculiform bar 9 is placed on this supporting leg upper surface.The top of last aciculiform bar 9 heads on small lever 11 1 ends, and small lever 11 other ends ride on the bead 16.Bead 16 is placed on the gas flow tube 20, an end of the corresponding big lever 7 in gas flow tube 20 tops, and the other end of big lever 7 connects the rocking arm that changes fork 3.Small lever about 11 two limits swing up and down around fulcrum 2 14, and big lever about 7 two limits swing up and down around fulcrum 1, and fulcrum 1 is fixed on the zero-bit chamber lid 23, and fulcrum 2 14 is fixed on the big lever 7.Between big lever 7 and zero-bit chamber lid 23, be connected with balancing spring 13, with control big lever 7 oscillating quantities.Be provided with closing spring 5 at big lever 7 with changeing fork 3 junctions, to guarantee big lever 7 and effective connection of changeing fork 3.Be provided with recovery springs 15 at small lever 11 and 7 of big levers, so that small lever 11 oscillating quantities are suppressed.
Gas flow tube 20 bottoms are positioned in the servomechanism installation 19; In servomechanism installation 19, gas flow tube 20 bottoms are fixed with dish seat 21; Can move up and down in servomechanism installation 19 housings thereby drive gas flow tube 20 through being fixed on 18 elongations of servomechanism installation spring box or 21 actions of contraction bands Moving plate seat on the dish seat 21.Servomechanism installation 19 bottoms connect compressed air hose 22.Gas flow tube 20 tops are connected with grating displacement sensor 17.
Remote adjustment spring 8 one ends connect the sensor lever 12 of " ∏ " shape, and the other end connects gear train 6, and gear train 6 connects motorized reducer 28, connect disk light beam encoder 27 on the motorized reducer 28.
When a kind of corrosion-resistant accurate gas pressurizer of the present invention is worked:
In servomechanism installation 19, feed air-flow through compressed air hose 22 earlier, making has air-flow upwards in the gas flow tube 20, thereby blows afloat the bead 16 of gas flow tube 20 tops, makes to have the gap between bead 16 and the gas flow tube 20.
When working pressure in the gas tank 1 rose, the center of diaphragm 26 is drum upwards, and promoting down, aciculiform bar 24 moves up; Sensor lever 12 moves thereupon; The last aciculiform bar 9 of sensor lever 12 upper ends also moves up, and promotes small lever 11 1 sides (left side) upwards, makes small lever 11 opposite sides (right side) to pressing down bead 16; Bead 16 reduces with the gap of gas flow tube 20, makes gas flow tube 20 gas outlet areas reduce; At this moment, servomechanism installation 19 compressed air pressure raise, and servomechanism installation spring box 18 drive dish seats 21 and then drive gas flow tube 20 upwards move in servomechanism installation 19; With big lever 7 one sides (right side) jack-up; Big lever 7 opposite sides (left side) press off downwards and close spring 5, drive valve lever 29 displacements through changeing fork 3 then, and valve body 31 and valve 32 gaps are reduced; Gas passage area reduces, and the working chamber internal pressure descends.
When gas flow tube 20 upwards moved in servomechanism installation 19, its displacement can be monitored through grating displacement sensor 17 in real time.
After said process began, relevant flexible member began acting in opposition simultaneously.
When moving jack-up big lever right side on the gas flow tube 20, rise simultaneously in small lever 11 right sides.Under the effect of small lever 11 and 7 recovery springs 15 of big lever, rise on small lever 11 right sides and be suppressed.And bead 16 will rise under the pressurized air effect, and itself and gas flow tube 20 gaps become big, and part pressurized air is discharged from gas flow tube 20, and servomechanism installation 19 internal pressures will stop to increase, and voltage stabilizer recovers steady state (SS).Pressure variation this moment is to setting valve, and working pressure and diaphragm 26 are reached balance in the gas tank 1, and pressure stability is at required value.
Working pressure descends in gas tank 1, and said process is reversed.
When working pressure in the gas tank 1 descended, roused downwards at the center of diaphragm 26, and following aciculiform bar 24 moves down; Sensor lever 12 moves thereupon; The last aciculiform bar 9 of sensor lever 12 upper ends also moves down, and it is downward to drive small lever 11 1 sides (left side), makes small lever 11 opposite sides (right side) move up; Bead 16 increases with the gap of gas flow tube 20, and part pressurized air is discharged from gas flow tube 20; At this moment, servomechanism installation 19 compressed air pressure descend, and servomechanism installation spring box 18 drive dish seats 21 and then drive gas flow tube 20 move down in servomechanism installation 19; Big lever 7 one sides (right side) are moved down; Big lever 7 opposite sides (left side) move up, and drive valve levers 29 displacements through closing spring 5, commentaries on classics fork 3, and valve body 31 and valve 32 gaps are increased; Gas passage area increases, and the working chamber internal pressure rises.
When gas flow tube 20 moves down, when big lever right side and small lever 11 right sides moved down simultaneously, bead 16 reduced with gas flow tube 20 gaps, and servomechanism installation 19 compressed air discharge rates reduce, and servomechanism installation 19 internal pressures increase, and voltage stabilizer recovers steady state (SS).Under the effect of small lever 11 and 7 recovery springs 15 of big lever, small lever 11 right sides descend and are suppressed.Pressure variation this moment is to setting valve, and working pressure and diaphragm 26 are reached balance in the gas tank 1, and pressure stability is at required value.
The pressure setting of voltage stabilizer working chamber among the present invention adopts remote adjustment spring 8 to carry out.When needs carry out the pressure adjustment; Rotation through motorized reducer 28; The amount of tension of adjusting spring 8 is at a distance adjusted, driven sensor lever 12 knee-actions of " ∏ " shape, aciculiform bar 24 knee-actions under sensor lever 12 knee-actions make; Thereby the pretightning force that applies on the adjustment diaphragm 26 realizes that the manual work of working pressure is set.Can monitor the adjustment amount of remote adjustment spring 8 in real time through disk light beam encoder 27.
Can realize the variation of pressure range of adjustment through changing the film upper spring 25 of different qualities parameter among the present invention.
Anti-fluororubber or tetrafluoroethene liner are adopted in each parts junction of voltage stabilizer of the present invention.Can realize that low discharge arrives the variation of big flow through the valve body 31 and valve 32 of changing different size.
Claims (10)
1. corrosion-resistant accurate gas pressurizer, this device comprises columniform gas tank (1), in gas tank (1) upper fixed flat board (2) is arranged; Gas tank (1) one end connects gas inlet pipe (34), and the other end connects gas output tube (30); Valve seat (33) is loaded on gas inlet pipe (34) or gas output tube (30) one ends after going up mounted valve (32); Valve (32) other end correspondence is arranged on the valve body (31) in the gas tank (1); Valve body (31) connects valve lever (29), and valve lever (29) upper end connects the commentaries on classics fork (3) that is arranged on the flat board (2); It is characterized in that:
On dull and stereotyped (2), be fixed with diaphragm (26), dull and stereotyped (2) corresponding diaphragm (26) locates to have through hole, makes gas tank (1) communicate with diaphragm (26) through this through hole; Diaphragm (26) top is covered with zero-bit chamber lid (23);
Following aciculiform bar (24) is placed in the zero-bit chamber lid (23); First supporting leg that is the sensor lever (12) of " ∏ " shape is fixed on zero-bit chamber lid (23) sidewall; The bottom of following aciculiform bar (24) is placed on diaphragm (26) upper surface central point, and the top of following aciculiform bar (24) heads on first supporting leg of the sensor lever (12);
Second supporting leg that is the sensor lever (12) of " ∏ " shape is located at zero-bit chamber lid (23) top, and the bottom of last aciculiform bar (9) is placed on this second supporting leg upper surface, and the top of last aciculiform bar (9) heads on small lever (11) one ends; Small lever (11) other end rides on the bead (16); Bead (16) is placed on the gas flow tube (20); One end of gas flow tube (20) the corresponding big lever in top (7), the other end of big lever (7) connect changes fork (3);
Gas flow tube (20) bottom is positioned in the servomechanism installation (19); In servomechanism installation (19), gas flow tube (20) bottom is fixed with dish seat (21); Through being fixed on servomechanism installation spring box (18) elongation or contraction bands Moving plate seat (21) action on the dish seat (21), in servomechanism installation (19) housing, move up and down thereby drive gas flow tube (20); Servomechanism installation (19) bottom connects compressed air hose (22).
2. a kind of corrosion-resistant accurate gas pressurizer according to claim 1 is characterized in that: described diaphragm (26) adopts beryllium-bronze material to process.
3. a kind of corrosion-resistant accurate gas pressurizer according to claim 1; It is characterized in that: described gas tank (1), valve seat (33), valve (32), valve lever (29) and flat board (2) all adopt carbon steel to process the first copper facing in back nickel plating again, perhaps adopt stainless steel to process.
4. a kind of corrosion-resistant accurate gas pressurizer according to claim 1; It is characterized in that: on dull and stereotyped (2), be fixed with case (4), (23), following aciculiform bar (24), sensor lever (12) are covered in diaphragm (26), zero-bit chamber, upward aciculiform bar (9), small lever (11), gas flow tube (20), servomechanism installation (19), big lever (7) and commentaries on classics fork (3) are placed in the case (4).
5. a kind of corrosion-resistant accurate gas pressurizer according to claim 1 is characterized in that: between diaphragm (26) and zero-bit chamber lid (23), be provided with film upper spring (25).
6. a kind of corrosion-resistant accurate gas pressurizer according to claim 1, it is characterized in that: two limits swing up and down around fulcrum two (14) about small lever (11), and two limits swing up and down around fulcrum one (10) about big lever (7); Between big lever (7) and zero-bit chamber lid (23), be connected with balancing spring (13), with control big lever (7) oscillating quantity; Be provided with closing spring (5) at big lever (7) with changeing fork (3) junction, be connected with commentaries on classics fork the effective of (3) to guarantee big lever (7); Between small lever (11) and big lever (7), be provided with recovery springs (15), so that small lever (11) oscillating quantity is suppressed.
7. a kind of corrosion-resistant accurate gas pressurizer according to claim 1; It is characterized in that: adjust sensor lever (12) end that spring (8) one ends connect " ∏ " shape at a distance; The other end connects gear train (6), and gear train (6) connects motorized reducer (28).
8. a kind of corrosion-resistant accurate gas pressurizer according to claim 7 is characterized in that: described motorized reducer (28) is located to be provided with and is connect disk light beam encoder (27).
9. a kind of corrosion-resistant accurate gas pressurizer according to claim 1; It is characterized in that: the zero-bit chamber that is made up of diaphragm (26) and zero-bit chamber lid (23) is connected a gas piping, and remaining pressure in the zero-bit chamber through this gas piping is that a steady state value and pressure are less than 100Pa.
10. a kind of corrosion-resistant accurate gas pressurizer according to claim 1 is characterized in that: described gas flow tube (20) top is provided with grating displacement sensor (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010606611A CN102155619B (en) | 2010-12-27 | 2010-12-27 | Corrosion resistance precision gas voltage regulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010606611A CN102155619B (en) | 2010-12-27 | 2010-12-27 | Corrosion resistance precision gas voltage regulator |
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| CN102155619A CN102155619A (en) | 2011-08-17 |
| CN102155619B true CN102155619B (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010606611A Active CN102155619B (en) | 2010-12-27 | 2010-12-27 | Corrosion resistance precision gas voltage regulator |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200946707Y (en) * | 2006-07-21 | 2007-09-12 | 王海平 | Decompression steady flow valve |
| CN200946706Y (en) * | 2006-09-05 | 2007-09-12 | 浙江派沃自控仪表有限公司 | Micro pressure self-operated type pressure regulating valve |
| CN200979024Y (en) * | 2006-10-31 | 2007-11-21 | 重庆青辰电器仪表有限公司 | Generally used generator fuel gas pressure reducing valve assembly device |
| EP1860516A1 (en) * | 2006-05-23 | 2007-11-28 | C.R.F. Societa Consortile per Azioni | Valve |
| CN201984354U (en) * | 2010-12-27 | 2011-09-21 | 四川红华实业有限公司 | Gas pressure stabilizing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007058616A (en) * | 2005-08-25 | 2007-03-08 | Tokai Corp | Pressure regulator |
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2010
- 2010-12-27 CN CN201010606611A patent/CN102155619B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1860516A1 (en) * | 2006-05-23 | 2007-11-28 | C.R.F. Societa Consortile per Azioni | Valve |
| CN200946707Y (en) * | 2006-07-21 | 2007-09-12 | 王海平 | Decompression steady flow valve |
| CN200946706Y (en) * | 2006-09-05 | 2007-09-12 | 浙江派沃自控仪表有限公司 | Micro pressure self-operated type pressure regulating valve |
| CN200979024Y (en) * | 2006-10-31 | 2007-11-21 | 重庆青辰电器仪表有限公司 | Generally used generator fuel gas pressure reducing valve assembly device |
| CN201984354U (en) * | 2010-12-27 | 2011-09-21 | 四川红华实业有限公司 | Gas pressure stabilizing device |
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| CN102155619A (en) | 2011-08-17 |
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