CN1721750A - High differential pressure high accuracy cage type pressure regulating device - Google Patents
High differential pressure high accuracy cage type pressure regulating device Download PDFInfo
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- CN1721750A CN1721750A CN 200410040118 CN200410040118A CN1721750A CN 1721750 A CN1721750 A CN 1721750A CN 200410040118 CN200410040118 CN 200410040118 CN 200410040118 A CN200410040118 A CN 200410040118A CN 1721750 A CN1721750 A CN 1721750A
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- 230000001105 regulatory effect Effects 0.000 title claims description 11
- 229920001971 elastomer Polymers 0.000 claims abstract description 67
- 239000000806 elastomer Substances 0.000 claims description 57
- 230000033228 biological regulation Effects 0.000 claims description 23
- 230000000694 effects Effects 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 12
- 230000009467 reduction Effects 0.000 claims description 6
- 208000004141 microcephaly Diseases 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 230000000087 stabilizing effect Effects 0.000 abstract 2
- 230000008676 import Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 230000003019 stabilising effect Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
This invention relates to a high pressure accurate basket booster used in gas transmission and to adjust gas pressure, which comprises main valve, stabilizing valve, bossing valve, wherein the main valve uses rubber film as drive structure and uses valve bar, core and socket as execution structure; the stabilizing valve is composed of valve case between upper and down covers and valve bar in the case and spring and rubber film; the main valve cover and core are matched with column steps designed as screw shape; the inner chamber is opened with ring gas tank without terminating sealed requirement.
Description
Technical field
The present invention relates to valve, particularly a kind of High Pressure Difference highi degree of accuracy cage pressure governor that is used for gas transmission and distribution system adjusting gaseous-pressure.
Background technique
At present, in gas transmission and distribution system, mostly adopt self-powering type pressure governor, axial flow pressure regulator and meander formula pressure governor to make gaseous-pressure and regulate.These pressure governors all be with rubber film as transmission device, when voltage regulator operation, self-powering type, axial flow pressure regulator are to utilize upper and lower film constant pressure difference to overcome spring sealed specific pressure to realize that pressure balance regulates; Meander formula pressure governor is to utilize upper and lower film constant pressure difference to overcome the spring reset effect to realize the pressure balance adjusting, and simultaneously, rubber film also will satisfy the shear action by seal action and medium channel hole of film pad passway.Like this, the pressure regulation range and the degree of regulation of pressure governor just are subjected to bigger limitation, also are subjected to very big influence working life, and particularly when regulating range of working pressure at the 6.3Mpa pressure level, rubber film intensity is difficult to satisfy usage requirement.
Summary of the invention
The objective of the invention is on the existing pressure governor basis that with the rubber film is transmission device, for further satisfying the degree of regulation and the regulation range of high pressure, big latus rectum pressure governor, prolong the working life of pressure governor, improve the work stress condition and the upper and lower film constant pressure difference equilibrium relation of rubber film, by to the improvement on traditional pressure governor principle design and the structural design, a kind of High Pressure Difference highi degree of accuracy cage pressure governor of regulating and blocking dual functions safely that possesses is proposed.The technological scheme that adopts is:
High Pressure Difference highi degree of accuracy cage pressure governor, form by main valve, pressure maintaining valve, command valve, wherein the valve pocket of main valve top is provided with the film pad, with the elastomer diaphragm is driving mechanism, valve rod, spool, valve seat are actuator, and valve core of main valve is a cylinder step plunger shape spool, and its upper and lower end face is communicated with by equalizing orifice, bottom end is embedded with nonmetal annular sealing gasket, forms sealing with valve seat conical surface raised head face and pays; Pressure maintaining valve wherein is mainly by the valve cap that is located between the upper and lower cover, and valve rod, spring, the elastomer diaphragm of device formed in the valve cap, pressure maintaining valve utilizes the effect of pressure medium and spring force, allow the variation of main valve inlet and outlet pressure that the pilot pressure of main valve film chamber is changed to the pressure stability direction that is tending towards setting, increase regulation range, reduce and regulate the surplus difference of pressure, improve degree of regulation; Command valve wherein is the variation according to the main valve inlet and outlet pressure, feeds back to command valve film chamber by signal tube, changes valve opening degree and changes, and realizes that pressure is regulated commander's control after and before the valve, it is characterized in that:
A. the valve pocket inner chamber of described main valve and spool are supporting is the cylinder stepped shape, valve pocket upper-end surface and upper end inner chamber and valve rod external diameter cooperation place are respectively equipped with O shape circle, area pressure reduction when valve base cavity channel size and valve pocket cylinder step microcephaly consistent size, main valve are regulated pressure work is in state of equilibrium;
B. the film pad of described main valve is designed to the butterfly disk, the middle part perforate, butterfly film pad inner chamber has annular air storing duct, do not establish the medium channel hole on the film pad, during high-pressure regulation, make elastomer diaphragm lower end and media outlet pressure constitute sealed air chamber by the spool equalizing orifice, through hole is offered in film pad lateral part, pressure medium constitutes sealed air chamber with suction pressure by through hole under the O shape circle effect of valve pocket upper-end surface;
C. described pressure maintaining valve constitutes two air chambers by top inner chamber, loam cake, elastomer diaphragm, the spring of last valve cap, lower lumen by lower cover, time valve cap, elastomer diaphragm, spring, last valve cap is formed two balance air chambers under the connection effect of valve rod blind hole and side opening, the elastomer diaphragm of valve rod and upper and lower valve cap and spring interact and fuse.
The technical characteristics that the present invention can also have is: the film pad not perforate of lateral part of main valve in the other hole of opening of valve pocket upper end mesopore side, makes elastomer diaphragm lower end and medium suction pressure constitute sealed air chamber by the spool equalizing orifice.
The present invention compared with prior art has following outstanding advantage and technique effect:
One, there is not the medium channel hole on the film pad, elastomer diaphragm is not done by seal request, when having avoided closing in the sealing channel hole suffered sealing shearing force, butterfly film pad inner chamber has annular air storing duct, be beneficial to and realize that main valve opens, for elastomer diaphragm in the balance air chamber that not washed away by medium, realize transmission agency, basic operating conditions is provided, has prolonged the working life of elastomer diaphragm.
Pressure reduction was little when two, the elastomer diaphragm transmission was worked, its value is that Returnning spring power is divided by effective diaphragm area, operating pressure differential is not subjected to the inlet and outlet pressure variable effect, can satisfy high pressure inlet and outlet pressure regulatory function, regulates range of working pressure and can reach more than the 6.3Mpa pressure level.
Three, the main valve film pad lower chamber balance that communicates with inlet pressure, the air chamber medium does not flow, the turbulent phenomenon of having avoided media flow to cause, when making the upper and lower air chamber adjustment of main valve film pad, good stability, it is little to fluctuate, the degree of regulation height.
Four, valve core of main valve, valve seat adopt matched seal to pay, under the effect of spool equalizing orifice, and spool upper and lower end stress balance, very little seal pressure power can realize sealing zero leakage.
Five, main valve is according to pressure medium height and usage requirement; utilizing the different medium flow direction and structural feature to satisfy other pressure of different pressures level respectively regulates; and when being implemented in the work of high and low pressure medium, as the elastomer diaphragm damaged condition appears, main valve still can block protection by automatic safe.
Six, pressure maintaining valve can make main valve upper film chamber pilot pressure always be tending towards the downstream pressure stabilising direction and change according to changes in flow rate behind upstream pressure variation and the valve.Pressure characteristics and Flow characteristics advantage are outstanding, and the adjusting pressure range is wide.Precision of voltage regulation height, closing pressure is much smaller than conventional regulator.
The above, pressure governor of the present invention is by the scientific and reasonable design of main valve drive mechanism and execution architecture, the innovation of Principles of Regulation, regulate the stable compensation of pressure, pressure governor of the present invention is compared all with traditional pressure governor at aspects such as regulating latus rectum, adjusting pressure, regulation range, degree of regulation and working life to be had than quantum jump.
Description of drawings
Fig. 1 is the structural representation of one of embodiment of the invention;
Fig. 2 is two a structural representation of the embodiment of the invention;
Fig. 3 is the pressure maintaining valve structural representation among Fig. 1, Fig. 2.
Fig. 1, label shown in Figure 2 (main valve partly): 1-bonnet, 2-spring, 3-elastomer diaphragm, 4-O shape circle, 5-pipe joint, the 6-pipe joint, 7-signal tube, 8-valve pocket, 9-spool, 10-valve seat, the 11-valve body, 12-lower cover, 13-bolt, 14-sleeve gasket, the 15-Gask-O-Seal, 16-equalizing orifice, 17-O shape circle, 18-valve rod, 19-O shape circle, 20-O shape circle, 21-film pad, 22-press table, the 23-top board, 24-signal pole, 40-annular air storing duct, φ 1, φ 2, φ 3 through holes.
Label shown in Figure 3 (pressure maintaining valve partly): 25-loam cake, 26-spring seat, 27-elastomer diaphragm, the last valve cap of 28-, 29-O shape circle, 30-spring, valve cap under the 31-, 32-lower cover, 33-filter screen, the 34-elastomer diaphragm, 35-blind hole, 36-valve rod, 37-O shape circle, the 38-spring, 39-adjusting screw rod, φ 4, φ 5 through holes.
Embodiment
The invention will be further described according to accompanying drawing embodiment below:
Figure 1 shows that one of embodiments of the invention, pressure governor of the present invention partly is made up of main valve, pressure maintaining valve, command valve three, and wherein main valve is driving mechanism with the elastomer diaphragm, and valve rod, spool, valve seat are actuator; The effect of pressure maintaining valve is the effect that utilizes pressure medium and spring force, allow the variation of main valve inlet and outlet pressure that the pilot pressure of main valve film chamber is changed to the pressure stability direction that is tending towards setting, increase regulation range, reduce and regulate the surplus difference of pressure, improve degree of regulation; The effect of command valve is the variation according to the main valve inlet and outlet pressure, feed back to command valve film chamber by signal tube, changing valve opening degree changes, realize that pressure is regulated commander's control after and before the valve, basic identical in view of the working principle and the structure characteristic of command valve of the present invention and existing like product, omit description in the embodiments of the invention to its structure characteristic.
Main valve is made up of main members such as valve body 11, valve seat 10, spool 9, valve rod 18, valve pocket 8, film pad 21, elastomer diaphragms 3, the lower end of valve body 11 is by lower cover 12 sealings, the upper end of valve body 11 connects bonnet 1, and and elastomer diaphragm 3 form the control air chambers, film pad 21 annular air storing ducts 40 and elastomer diaphragm 3 Compositional balance air chambers, the main valve import connects pressure maintaining valve, and outlet connects command valve.
Spool 9 is a cylinder step piston structure, have equalizing orifice 16 on the spool, spool bottom and upper end are communicated, spool 9 bottom inner chambers are embedded with Gask-O-Seal 15, form sealing with valve seat 10 raised head faces and pay, Gask-O-Seal 15 is selected nonmetallic material such as rubber or fluoroplastic for use.
Valve pocket 8 inner chambers and spool 9 are supporting to be the cylinder stepped shape, valve pocket 8 upper-end surfaces and upper end inner chamber and valve rod 18 external diameter cooperation places are respectively equipped with O shape circle 20,19, to satisfy pressure medium when film pad 21 side by-pass hole φ 1 enter elastomer diaphragm 3 cavity of resorptions, formation sealed air chamber and medium do not flow under O shape circle 20 effects of valve pocket 8 upper-end surfaces, and air chamber pressure equals the import pressure medium.Area pressure reduction when valve seat 10 bore passages sizes and valve pocket 8 cylinder step microcephaly consistent size, main valve are regulated pressure work is in state of equilibrium.
The film pad 21 of main valve is designed to the butterfly disk, the middle part perforate, butterfly film pad inner chamber has annular air storing duct 40, do not establish the medium channel hole on the film pad 21, during high-pressure regulation, make elastomer diaphragm 3 lower ends and media outlet pressure constitute sealed air chamber by spool equalizing orifice 16, through hole φ 1 is offered in film pad 21 lateral parts, pressure medium constitutes sealed air chamber with suction pressure by through hole φ 1 under valve pocket 8 upper-end surface O shape circle 20 effects.
When high pressure is regulated; for avoiding medium washing away and protect the sealing reliability of main valve when safety is blocked protective action to spool 9 soft sealing faces; medium is from the main valve high in and low out; the O shape of valve pocket 8 upper ends circle 19,20 can satisfy that pressure medium forms sealed air chamber in valve pocket 8 structures upper end when film pad through hole φ 1 enters elastomer diaphragm 3 cavity of resorptions and medium does not flow, and air chamber pressure equals the import pressure medium.The downward directed force F of the control air chamber that elastomer diaphragm 3 upper ends and bonnet 1 are formed
DownWith control air chamber pressure P
3, elastomer diaphragm 3 useful area S, Returnning spring power F
Bullet, spool 9 microcephaly's end area S
1, valve rod area S
Bar, main valve outlet pressure P
2Relevant, i.e. F
Down=P
3S+F
Bullet+ P
2(S
1-S
Bar).The sealed air chamber that elastomer diaphragm 3 and valve pocket 8 upper ends the are formed directed force F that makes progress
OnWith import pressure medium P
1, Effective Area of Rubber Film S, valve rod area S
BarRelevant, i.e. F
On=P
1(S-S
Bar)+P
2S
1Regulate command valve and make outlet pressure reach setting value, regulate pressure maintaining valve again and make it satisfy inlet pressure variation and rate of discharge variation P
2Stablize constant, elastomer diaphragm 3 upper and lower air chamber balance, i.e. P at this moment
1(S-S
Bar)+P
2S
1=P
3S+F
Bullet+ P
2(S
1-S
Bar).Because S
BarMuch smaller than S, S
BarWhen area is ignored, its equilibrium conditions P
1S+P
2S
1=P
3S+F
Bullet+ P
2S
1Lower chamber pressure differential deltap P=P on the elastomer diaphragm
1-P
3=F
Bullet/ S.Lower chamber pressure reduction is main relevant with Returnning spring power and Effective Area of Rubber Film on the elastomer diaphragm, can satisfy the long lifetime service condition of elastomer diaphragm under the high pressure adjusting situation during designing and calculating fully, makes Δ P value much smaller than traditional pressure governor specified value.
When the downstream end subscriber quits work, pressure governor outlet pressure medium P
2Raise P
2The variation of value feeds back to command valve by signal tube 7, works as P
2Command valve was closed when value was elevated to the closing pressure value, and the lower chamber medium does not flow on the main valve elastomer diaphragm, and its pressure equals the import pressure medium.Under action of reset spring, nonmetallic ring pad 15 end faces that valve core of main valve 9 lower end inner chambers embed are close to the raised head face of valve seat 10.Main valve import pressure medium acts on the downward lifting surface area of cylinder step plungers valve core 9 greater than the lifting surface area that makes progress, and the medium high in and low out, is beneficial to main valve and realizes self-energized seal under condition of high voltage, and main valve is closed automatically.If elastomer diaphragm damages in the high-pressure regulation work; upper and lower air chamber communicates; upper and lower air chamber pressure equals the import pressure medium; to close the principle that upper and lower air chamber pressure equates identical with command valve; main valve blocks automatically under action of reset spring and closes, thereby has satisfied the high pressure pressure regulation and blocked the realization of protecting dual functions safely.
The pressure governor main valve is closed when opening again, because the butterfly end face of film pad 21 has annular air storing duct 40, makes the stress balance condition when opening or closing constant, can guarantee to open and close light and flexible in the High Pressure Difference regulation range.
Figure 2 shows that two of embodiments of the invention, when pressure medium was low, medium was not obvious especially to the souring of the nonmetal annular sealing gasket 15 of spool, and it is important that degree of regulation more seems when gas transmission and distribution, the medium low in and high out.At this moment, the microcephaly of valve core of main valve 9 holds diameter and valve seat 10 bore passages consistent size, film pad 21 is not offered by-pass hole except that mesopore, valve pocket 8 does not have O shape groove with valve rod 18 cooperation places, the other through hole φ 3 that offers of valve pocket 8 upper ends and valve rod 18 mesopore sides, medium enters elastomer diaphragm 3 lower ends by spool equalizing orifice 16, through hole φ 2, through hole φ 3, form sealed air chamber with valve pocket upper-end surface O shape circle 20, and pressure medium equals the import pressure medium.Spool 8 upper and lower end pressure complete equilibriums, the stressed useful area of lower chamber is equal fully on the elastomer diaphragm 3.Regulate command valve and pressure maintaining valve, main valve outlet pressure P
2Stable, elastomer diaphragm 3 upper gas chamber active forces are pilot pressure P
3Multiply by elastomer diaphragm 3 useful area S and add spring force, elastomer diaphragm 3 lower chambers are import pressure medium P
1Multiply by elastomer diaphragm 3 useful area S, during upper and lower air chamber balance, P
3S+F
Bullet=P
1S, upper and lower air chamber pressure differential deltap P=P
1-P
3=F
Bullet/ S.This shows, during the pressure medium low in and high out, lower chamber pressure reduction is only relevant with elastomer diaphragm 3 useful area with spring force on the elastomer diaphragm 3, irrelevant with the import and export pressure medium, the design load of its elastomer diaphragm pressure difference Δ P is much smaller than traditional pressure governor master gage definite value, the operating conditions of elastomer diaphragm improves fully, manufactures and designs the easier long lifetime usage requirement of satisfying, and also more can guarantee High Pressure Difference, highi degree of accuracy adjusting usage requirement.
If elastomer diaphragm 3 damaged conditions, because pressure medium is lower, seal pressure power is less, and under the effect of Returnning spring power, the main valve automatic safe blocks.
Fig. 3 is the structural diagrams of pressure maintaining valve, pressure maintaining valve mainly is made up of lower cover 32, time valve cap 31, last valve cap 28, valve rod 36, loam cake 25, elastomer diaphragm 27 and 34, adjusting screw rod 39, the valve rod bottom is the conical surface, and the centre has blind hole 35, and blind hole end both sides have through hole φ 4 and φ 5.The lower lumen of last valve cap 28 is formed two balance air chambers under the connection effect of valve rod blind hole 35 and through hole φ 4 and φ 5, constitute two air chambers by top inner chamber, loam cake 25, elastomer diaphragm 27, the spring 38 of last valve cap 28.Valve rod 36 passes through elastomer diaphragm 27 and 34, under spring 30 and spring 38 effects, and can be with suction pressure P
1With main valve outlet pressure P
2Variation produce upper and lower displacement, the regulating valve stem 36 bottom conical surfaces and lower cover upper-end surface aperture change, and make the pilot pressure that enters main valve upper end air chamber always to being tending towards making main valve outlet pressure P
2Stabilising direction changes.
Inlet pressure P
1During variation, break spring 30 and 38 and the balanced action power of elastomer diaphragm 27 and 34, move or move down on the valve rod 36, change, enter the suction pressure P of main valve elastomer diaphragm 3 upper ends by valve rod 36 bottom conical surface apertures
3Change, main valve elastomer diaphragm 3 upper and lower end air chamber pressures are balance again, and the valve core of main valve bottom is moved or moved down on the aperture of valve seat 10 raised head faces, main valve outlet pressure P
2Change to being tending towards former setting outlet pressure value direction, under the command valve acting in conjunction, main valve outlet pressure P
2Surplus difference is minimum, substantially not with P
1Change and change, still keep former setup pressure value.
When the main valve rate of discharge changes, cause main valve outlet pressure P
2Change, by outlet pressure P
2Connect the pressure maintaining valve air chamber, under pressure maintaining valve elastomer diaphragm 27 and spring 38 acted on, valve rod 36 bottom end apertures changed, and enter the suction pressure P of main valve elastomer diaphragm 3 upper ends
3Change, in like manner, main valve outlet pressure P
2Do not change, still keep former setup pressure value with rate of discharge.
This shows that the effect of pressure maintaining valve is further auxiliary command valve, has realized main valve outlet pressure P
2Be not subjected to inlet pressure P
1Influence with rate of discharge changes can realize the highi degree of accuracy adjusting in the big range of regulation of main valve inlet/outlet.Pressure maintaining valve all feeds back to the main valve pilot pressure to the variation in pressure after and before the valve of main valve, the main valve pilot pressure again at command valve according to outlet pressure P
2Under the feedback effect, make the variation of pilot pressure always be tending towards the P of former setting
2The value stabilization direction changes, and it is idealized that the Pressure characteristics of pressure governor and Flow characteristics more are tending towards, and makes regulation range wideer, and degree of regulation is higher.
Claims (2)
1, a kind of High Pressure Difference highi degree of accuracy cage pressure governor, form by main valve, pressure maintaining valve, command valve, wherein the valve pocket of main valve top is provided with the film pad, with the elastomer diaphragm is driving mechanism, valve rod, spool, valve seat are actuator, spool is a cylinder step plunger shape spool, its upper and lower end face is communicated with by equalizing orifice, bottom end is embedded with nonmetal annular sealing gasket, forming sealing with valve seat conical surface raised head face pays, pressure maintaining valve wherein is mainly by the valve cap that is located between the upper and lower cover, and valve rod, spring, the elastomer diaphragm of device formed in the valve cap, it is characterized in that:
A. the valve pocket of described main valve (8) inner chamber and spool (9) are supporting is the cylinder stepped shape, valve pocket (8) upper-end surface and upper end inner chamber and valve rod (18) external diameter cooperation place are respectively equipped with O shape circle (20,19), area pressure reduction when valve seat (10) bore passages size and valve pocket (8) cylinder step microcephaly consistent size, main valve are regulated pressure work is in state of equilibrium;
B. the film pad (21) of described main valve is designed to the butterfly disk, the middle part perforate, butterfly film pad (21) inner chamber has annular air storing duct (40), the film pad is not established the medium channel hole on (21), during high-pressure regulation, make elastomer diaphragm (3) lower end and media outlet pressure constitute sealed air chamber by spool equalizing orifice (16), through hole (φ 1) is offered in film pad (21) lateral part, pressure medium constitutes sealed air chamber with suction pressure by through hole (φ 1) under valve pocket (8) upper-end surface O shape circle (20) effect;
C. described pressure maintaining valve constitutes two air chambers by top inner chamber, loam cake (25), elastomer diaphragm (27), the spring (38) of last valve cap (28), lower lumen by lower cover (32), time valve cap (31), elastomer diaphragm (34), spring (30), last valve cap (28) is formed two balance air chambers under the connection effect of valve rod (36) blind hole and through hole (φ 4, φ 5), valve rod (36), elastomer diaphragm (27,34) and spring (38,30) interact and fuse.
2, High Pressure Difference highi degree of accuracy cage regulator as claimed in claim 1, it is characterized in that film pad (21) the not perforate of lateral part of main valve, the mesopore side other hole (φ 3) of opening in valve pocket (8) upper end makes elastomer diaphragm (3) lower end and medium suction pressure constitute sealed air chamber by spool equalizing orifice (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100401183A CN100489358C (en) | 2004-07-05 | 2004-07-05 | High differential pressure high accuracy cage type pressure regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100401183A CN100489358C (en) | 2004-07-05 | 2004-07-05 | High differential pressure high accuracy cage type pressure regulating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1721750A true CN1721750A (en) | 2006-01-18 |
| CN100489358C CN100489358C (en) | 2009-05-20 |
Family
ID=35912258
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100401183A Expired - Lifetime CN100489358C (en) | 2004-07-05 | 2004-07-05 | High differential pressure high accuracy cage type pressure regulating device |
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| Country | Link |
|---|---|
| CN (1) | CN100489358C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100520136C (en) * | 2007-06-26 | 2009-07-29 | 河海大学 | Batch pressure-differential controlling valve |
| CN101709801B (en) * | 2009-11-19 | 2011-05-04 | 浙江沃尔达铜业有限公司 | Dynamic differential pressure balanced control valve |
| CN104500800A (en) * | 2014-12-30 | 2015-04-08 | 特瑞斯能源装备股份有限公司 | Axial flow pressure regulator |
| CN109340446A (en) * | 2018-11-26 | 2019-02-15 | 乐山川天燃气输配设备有限公司 | A kind of indirect-action type pressure regulator |
| CN111998090A (en) * | 2020-08-31 | 2020-11-27 | 江苏亿阀股份有限公司 | Integrated internal bypass high-pressure low-torque opening and closing ball valve and installation method thereof |
-
2004
- 2004-07-05 CN CNB2004100401183A patent/CN100489358C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100520136C (en) * | 2007-06-26 | 2009-07-29 | 河海大学 | Batch pressure-differential controlling valve |
| CN101709801B (en) * | 2009-11-19 | 2011-05-04 | 浙江沃尔达铜业有限公司 | Dynamic differential pressure balanced control valve |
| CN104500800A (en) * | 2014-12-30 | 2015-04-08 | 特瑞斯能源装备股份有限公司 | Axial flow pressure regulator |
| CN109340446A (en) * | 2018-11-26 | 2019-02-15 | 乐山川天燃气输配设备有限公司 | A kind of indirect-action type pressure regulator |
| CN109340446B (en) * | 2018-11-26 | 2023-12-22 | 乐山川天燃气输配设备有限公司 | Indirect acting voltage regulator |
| CN111998090A (en) * | 2020-08-31 | 2020-11-27 | 江苏亿阀股份有限公司 | Integrated internal bypass high-pressure low-torque opening and closing ball valve and installation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100489358C (en) | 2009-05-20 |
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Assignee: Leshan Changyi Valve Manufacturing Co., Ltd. Assignor: Wang Yuanqing|Wang Yuanyi Contract record no.: 2011510000228 Denomination of invention: High differential pressure high accuracy cage type pressure regulating device Granted publication date: 20090520 License type: Exclusive License Open date: 20060118 Record date: 20110828 |
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Free format text: FORMER OWNER: WANG YUANYI Effective date: 20140402 Owner name: SICHUAN CHANGYI OIL-GAS GATHERING TRANSPORTAION EQ Free format text: FORMER OWNER: WANG YUANQING Effective date: 20140402 |
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Effective date of registration: 20140402 Address after: 614000 Leshan City, Central District, Sichuan Le Lok Road, No. 16 Patentee after: SICHUAN CHANGYI OIL-GAS CATHERING TRANSPORTATION EQUIPMENT CO., LTD. Address before: 614000 Sichuan Province, Leshan City District Road No. 56 hundred Changyi valve company Patentee before: Wang Yuanqing Patentee before: Wang Yuanyi |