CN103277553A - Mass-flow balanced type pressure regulating valve - Google Patents
Mass-flow balanced type pressure regulating valve Download PDFInfo
- Publication number
- CN103277553A CN103277553A CN2013102002276A CN201310200227A CN103277553A CN 103277553 A CN103277553 A CN 103277553A CN 2013102002276 A CN2013102002276 A CN 2013102002276A CN 201310200227 A CN201310200227 A CN 201310200227A CN 103277553 A CN103277553 A CN 103277553A
- Authority
- CN
- China
- Prior art keywords
- piston
- valve
- pressure regulator
- big flow
- regulator valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a mass-flow balanced type pressure regulating valve which comprises a valve body (01), a valve cover (02), a valve plug (03), an input channel (106), an output channel (107) and a pressure reducing structure. The pressure reducing structure is a single-stage pressure reducing structure, a piston (10) is arranged in the single-stage pressure reducing structure, one end of the piston (10) is contacted with the valve plug (3) through a compression bar (05), and the other end of the piston (10) is contacted with a regulating spring (19). According to the technical scheme, the single-stage pressure reducing is achieved, a piston type structure is adopted by a pressure reducing cavity, the piston assembly of the mass-flow balanced type pressure regulating valve is different from a traditional diaphragm type structure, and therefore the risk of damaging of a diaphragm caused by mass flow and large pressure fluctuation is reduced.
Description
Technical field
The invention belongs to the technical field of the pressure regulator valve of liquid or gas.More particularly, the present invention relates to a kind of big flow equilibrium formula pressure regulator valve.
Background technique
On present domestic and international market, the pressure governor of big flow (as flow greater than 100 Nm3/h) adopts traditional diaphragm type structure, and to common commercial Application, because operating mode is single, service condition is simple, and working life is less demanding, and diaphragm type structure is suitable.
But along with various fuel gas such as compressed natural gas (CNG) or liquid such as the LNG Liquefied natural gas application on automotive industry such as (LNG), traditional diaphragm type pressure governor often demonstrates many drawbacks under the operating mode of complexity, breaking, wearing and tearing as diaphragm; Incompatibility to low temperature environment; And the vibration of big flow, air blast etc., directly influenced quality and the working life of product.
And other structure on the market as piston cylinder operator, adopts multi-step pressure reduction more, complex structure, cost height; Bellows structure requires height to bellows, and cost is very high.
Summary of the invention
The invention provides a kind of big flow equilibrium formula pressure regulator valve, its objective is and avoid because of the damage to diaphragm of big flow, big pressure surge.
To achieve these goals, the technological scheme taked of the present invention is:
Big flow equilibrium formula pressure regulator valve provided by the present invention, comprise valve body, valve gap, spool, input channel, output channel and pressure reduction structure, described pressure reduction structure is the single-stage pressure reducing structure, be provided with piston in the described single-stage pressure reducing structure, an end of described piston contacts with described spool by depression bar; The other end of described piston contacts with Regulation spring.
Described piston contacts with Regulation spring by spring seat.
Described spring seat is fastened on the described piston by the spring seat locking nut.
Described Regulation spring by slide block and steel ball supporting on adjusting screw rod; Described adjusting screw rod is fixed on the described valve gap by locking nut.
Described depression bar is provided with vent, with two underpressure chamber connections at described spool two ends.
Be provided with dividing plate in the described valve body, on described dividing plate, be provided with Venturi tube, described dividing plate is cut apart the cavity at described output channel and piston place; Establish Venturi tube at described dividing plate, with the cavity UNICOM at described output channel and piston place.
Described dividing plate is fixed on the described valve body by screw.
On the surface of contact of described piston and valve body, be provided with seal ring and piston packing.
On the described valve gap, be provided with equalizing sub.
Between described piston and depression bar, be embedded with nonmetal cushion block.
The present invention adopts technique scheme, realizes single-stage pressure reducing, and relief chamber adopts piston cylinder operator, and its piston assembly is different from traditional diaphragm type structure, thereby has reduced because of big flow, pressure surge is to the risk of the damage of diaphragm greatly; Its piston assembly is quick on the draw, thereby has remedied the shortcoming of piston structure with respect to the diaphragm structure response lag by adopting special sealing configuration; The mandrel of valve has the design of balanced type pressure regulator valve simultaneously, makes the fluctuation of different inlet pressures to the adjusting of outlet pressure, stable almost not influence; Meanwhile, the outlet port of valve is provided with Venturi tube, makes different traffic demands, and is very little to the influence of outlet pressure.Therefore, realized decompression, voltage regulation result under the different operating modes; Simple in structure, sealing part is few, is quick on the draw, and flow is big, and delivery pressure is stable, applicable to different inlet pressures, as: low pressure 0～50 bar; Middle 0～the 100bar that presses; High pressure 0～200bar etc. had both avoided the shortcoming of diaphragm-type pressure regulating valve inefficacy easy to wear, and the pressure regulator valve of labyrinth than other is simple, practical again, and cost is low; Structurally, the present invention considers the complex working condition of automotive industry, has strengthened wear-resistant, endurance function, guarantees long-term requirement in working life.Therefore, reached economical and practical effect.
Description of drawings
This specification comprises the following drawings, and its content is respectively:
Fig. 1 is structure cross-sectional schematic of the present invention;
Fig. 2 is the schematic top plan view of structure shown in Figure 1;
Fig. 3 is the side surface direction cross-sectional schematic of structure shown in Figure 1;
Fig. 4 is the schematic perspective view of structure shown in Figure 1.
Be labeled as among the figure:
01, valve body, 02, valve gap, 03, spool, 04, sealing nut, 05, depression bar, 06, dividing plate, 07, adjusting screw rod, 08, nonmetal cushion block, 09, locking nut, 10, piston, 11, spring seat, 12, seal ring, 13, steel ball, 14, slide block, 15, equalizing sub, 16, Venturi tube, 17, piston packing, 18, valve seat, 19, Regulation spring, 20, balance spring, 21, small sealing ring, 22, little seal ring, 23, seal ring, 24, screw, 25, the spring seat locking nut;
101, underpressure chamber, 102, the underpressure chamber, 103, the underpressure chamber, 104, vent, 105, input channel, 106, input channel, 107, output channel.
Embodiment
Contrast accompanying drawing below, the description by to embodiment is described in further detail the specific embodiment of the present invention, to help those skilled in the art inventive concept of the present invention, technological scheme is had more complete, accurate and deep understanding.
Structure of the present invention as shown in Figures 1 to 4 is a kind of big flow equilibrium formula pressure regulator valve.
One, in order to solve the problem that prior art exists and to overcome its defective, realize avoiding because of big flow, pressure surge is to the goal of the invention of the damage of diaphragm greatly, the technological scheme that the present invention takes is:
As shown in Figures 1 to 4, big flow equilibrium formula pressure regulator valve of the present invention, comprise valve body 01, valve gap 02, spool 03, input channel 106, output channel 107 and pressure reduction structure, described pressure reduction structure is the single-stage pressure reducing structure, be provided with piston 10 in the described single-stage pressure reducing structure, an end of described piston 10 contacts with described spool 03 by depression bar 05; The other end of described piston 10 contacts with Regulation spring 19.
Pressure regulator valve of the present invention is single-stage pressure reducing, and relief chamber adopts piston cylinder operator, and its piston assembly is different from traditional diaphragm type structure, thereby has reduced because of big flow, pressure surge is to the risk of the damage of diaphragm greatly.Described piston assembly is quick on the draw, thereby has remedied the shortcoming of piston structure with respect to the diaphragm structure response lag by adopting special sealing configuration.
Two or by the following technical solutions:
A kind of big flow equilibrium formula pressure regulator valve, comprise valve body 01, valve gap 02, mangetic core assembly, input channel 106, output channel 107, described mangetic core assembly is modular structure, that is: described mangetic core assembly comprises spool 03, described spool 03 is installed on the valve seat 18, and described valve seat 18 is installed in the described valve body 01 by sealing nut 04.
Described modular structure also comprises seal ring 23, balance spring 20, small sealing ring 21, little seal ring 22 and depression bar 05; Described seal ring 23 is located on the surface of contact of valve body 01 and sealing nut 04; Described small sealing ring 21 and little seal ring 22 are located on the surface of contact of described sealing nut 04 and valve seat 18; One end of described depression bar 05 contacts with described balance spring 20, and the other end contacts with piston 10, thereby forms an overall structure, and makes input channel 106 and output channel 107 realize break-make by the folding of spool 03.
Described mangetic core assembly is made up of sealing nut 04, seal ring 23, balance spring 20, small sealing ring 21, little seal ring 22, valve seat 18, depression bar 05 and spool 03, thereby form an integral module, and make input channel 106 produce related with output channel 107 by the folding of spool 03.
Described pressure regulator valve has adopted the equilibrium valve structure, small sealing ring 21 and little seal ring 22 have been cooperated at valve seat 18, thereby eliminated the dorsad active force of inlet pressure (P1) to valve seat 18, make the folding of valve seat 18 and spool 03 not be subjected to the influence of inlet pressure (P1), then outlet pressure (P2) is stable.
Usually, by changing described mangetic core assembly module, make described pressure regulator valve go for different incoming pressure (P1), as P1=0～50 bar(low pressure), press among P1=0～100 bar() or P1=0～200 bar(high pressure) etc. situation; Or different temperature environments, can reach 120 ℃ as high temperature, low temperature can reach-180 ℃.Particularly, by changing shape or the sectional area of depression bar 05, can obtain the flow under the different incoming pressures, the vibration of minimizing air-flow, noise etc.; By changing material, the structure of spool 03, can satisfy the usage requirement of gas or the liquid of all temps, pressure and medium; By changing small sealing ring 21, little seal ring 22, can reduce under different pressures, the temperature surface friction drag that valve seat 18 is subjected to, the being quick on the draw property of enhancing valve; By changing balance spring 20, can improve the reaction velocity of valve seat 18 etc.
Three or by the following technical solutions:
A kind of big flow equilibrium formula pressure regulator valve comprises valve body 01, valve gap 02, spool 03, input channel 106, output channel 107, and described pressure regulator valve is provided with piston 10, and an end of described piston 10 contacts with described spool 03 by depression bar 05; The other end of described piston 10 contacts with Regulation spring 19; Be provided with dividing plate 06 in the described valve body 01, described dividing plate 06 is cut apart described output channel 107 and the cavity at piston 10 places; Establish Venturi tube 16 at described dividing plate 06, described Venturi tube 16 is with the cavity UNICOM of described output channel 107 with piston 10 places.
Described relief chamber is divided into two underpressure chamber by dividing plate 06, i.e. underpressure chamber 101, underpressure chamber 102; Wherein, underpressure chamber 102 links to each other with described piston assembly, and another underpressure chamber 101 communicates with Venturi tube 16 and outlet passage 107.
Described dividing plate 06 adopts lubrication effect nonmetallic material preferably, as PTFE etc., thereby has reduced activity frictional force and the wearing and tearing of depression bar 05, has avoided metal fillings that the wearing and tearing because of depression bar 05 produce to the damage of spool 03 and valve seat 18 etc.
When rate of discharge (F2) increases, the outlet port flow velocity of Venturi tube 16 also increases, form negative pressure of vacuum, thereby make the pressure of underpressure chamber 102 reduce rapidly, then Regulation spring 19 is to pressing down described piston assembly, and drives depression bar 05 and open spool 03 bigger downwards, thereby satisfy the demand of increasing flow (F2), and do not reduce the delivery pressure (P2) of underpressure chamber 101, reach big flow, the effect constant, that voltage stabilizing is exported.
Four, more specifically, the present invention by the following technical solutions
Described piston 10 contacts with Regulation spring 19 by spring seat 11.
Described spring seat 11 adopts the special shapes design, with valve gap 02 precision-fit, with the influence to piston 10 of the inclination that prevents Regulation spring 19 and torsional deformation.
Described spring seat 11 is fastened on the described piston 10 by spring seat locking nut 25.
Described Regulation spring 19 is bearing on the adjusting screw rod 07 by slide block 14 and steel ball 13; Described adjusting screw rod 07 is fixed on the described valve gap 02 by locking nut 09.
Described Regulation spring 19 upper ends are provided with slide block 14 and steel ball 13, are used for reducing friction, make things convenient for adjusting screw rod 07 and spring 19.
Described depression bar 05 is provided with vent 104, with two underpressure chamber 101, underpressure chamber 103 connections at described spool 03 two ends.
Described depression bar 05 is provided with vent 104, and two underpressure chamber 101, underpressure chamber 103 are connected.
Be provided with dividing plate 06 in the described valve body 01, on described dividing plate 6, be provided with Venturi tube 16, described dividing plate 06 is cut apart described output channel 107 and the cavity at piston 10 places; Establish Venturi tube 16 at described dividing plate 06, with the cavity UNICOM of described output channel 107 with piston 10 places.
Described dividing plate 06 is fixed on the described valve body 01 by screw 24.
On the surface of contact of described piston 10 and valve body 01, be provided with seal ring 12 and piston packing 17.
Described piston packing 17, seal ring 12 are according to the applicable cases of different pressures, medium and temperature, can adopt different structural type, as adopt lip-type seal circle (Lip O-ring), this special envelope (Step Seal), general plug envelope forms such as (Variseal).
The seal ring 12 of piston can adopt various ways or material, to adapt to different delivery pressures and different high and low temperature environments, can be free adjustment between 0～20bar as delivery pressure, and serviceability temperature can be free transition between 120 ℃ to-180 ℃.
On the described valve gap 02, be provided with equalizing sub 15.
On the described valve gap 02, be provided with equalizing sub 15.Described equalizing sub 15 can connect mouth or other form for what connect flexible pipe, elects for different applicable cases, as vacuum compensation pipe of sending and receiving motivation etc.
Between described piston 10 and depression bar 05, be embedded with nonmetal cushion block 08.Be embedded with nonmetal cushion block 08 at piston 10, avoided the direct of metal to metal of depression bar 05 and piston 10 to contact, reduced wearing and tearing and impact each other.
By reference to the accompanying drawings the present invention has been carried out exemplary description above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technological scheme carry out; or without improving design of the present invention and technological scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (10)
1. one kind big flow equilibrium formula pressure regulator valve, comprise valve body (01), valve gap (02), spool (03), input channel (106), output channel (107) and pressure reduction structure, it is characterized in that: described pressure reduction structure is the single-stage pressure reducing structure, be provided with piston (10) in the described single-stage pressure reducing structure, an end of described piston (10) contacts with described spool (03) by depression bar (05); The other end of described piston (10) contacts with Regulation spring (19).
2. according to the described big flow equilibrium formula pressure regulator valve of claim 1, it is characterized in that: described piston (10) contacts with Regulation spring (19) by spring seat (11).
3. according to the described big flow equilibrium formula pressure regulator valve of claim 2, it is characterized in that: described spring seat (11) is fastened on the described piston (10) by spring seat locking nut (25).
4. according to the described big flow equilibrium formula pressure regulator valve of claim 1, it is characterized in that: described Regulation spring (19) is bearing on the adjusting screw rod (07) by slide block (14) and steel ball (13); Described adjusting screw rod (07) is fixed on the described valve gap (02) by locking nut (09).
5. according to the described big flow equilibrium formula pressure regulator valve of claim 1, it is characterized in that: described depression bar (05) is provided with vent (104), with two underpressure chamber (101,103) connection at described spool (03) two ends.
6. according to the described big flow equilibrium formula pressure regulator valve of claim 1, it is characterized in that: be provided with dividing plate (06) in the described valve body (01), on described dividing plate (6), be provided with Venturi tube (16), described dividing plate (06) is cut apart described output channel (107) and the cavity at piston (10) place; Establish Venturi tube (16) at described dividing plate (06), with the cavity UNICOM of described output channel (107) with piston (10) place.
7. according to the described big flow equilibrium formula pressure regulator valve of claim 6, it is characterized in that: described dividing plate (06) is fixed on the described valve body (01) by screw (24).
8. according to the described big flow equilibrium formula pressure regulator valve of claim 1, it is characterized in that: on the surface of contact of described piston (10) and valve body (01), be provided with seal ring (12) and piston packing (17).
9. according to the described big flow equilibrium formula pressure regulator valve of claim 1, it is characterized in that: on the described valve gap (02), be provided with equalizing sub (15).
10. according to the described big flow equilibrium formula pressure regulator valve of claim 1, it is characterized in that: between described piston (10) and depression bar (05), be embedded with nonmetal cushion block (08).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310200227.6A CN103277553B (en) | 2013-05-25 | 2013-05-25 | A kind of large discharge balanced type pressure regulator valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310200227.6A CN103277553B (en) | 2013-05-25 | 2013-05-25 | A kind of large discharge balanced type pressure regulator valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103277553A true CN103277553A (en) | 2013-09-04 |
| CN103277553B CN103277553B (en) | 2016-01-20 |
Family
ID=49060145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310200227.6A Expired - Fee Related CN103277553B (en) | 2013-05-25 | 2013-05-25 | A kind of large discharge balanced type pressure regulator valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103277553B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847941A (en) * | 2015-03-11 | 2015-08-19 | 北京控制工程研究所 | High-resistance non-metal membrane type pressure reducer |
| CN104963792A (en) * | 2015-07-13 | 2015-10-07 | 成都恩吉威汽车系统有限公司 | Automotive CNG pressure reducer with novel piston type pressure reducing mechanism |
| WO2016011952A1 (en) * | 2014-07-22 | 2016-01-28 | 费希尔久安输配设备(成都)有限公司 | Pressure regulating valve |
| CN105650314A (en) * | 2016-04-18 | 2016-06-08 | 黄幼华 | Self-operated type pressure stabilizing balance valve |
| CN105673903A (en) * | 2016-04-18 | 2016-06-15 | 黄幼华 | Self-operated balance valve |
| CN106089499A (en) * | 2016-07-19 | 2016-11-09 | 成都安程通科技有限公司 | A kind of gas-fueled vehicles CNG decompressor |
| CN106224129A (en) * | 2016-07-19 | 2016-12-14 | 成都安程通科技有限公司 | A kind of energy-conservation vehicle CNG decompressor |
| CN110815116A (en) * | 2019-11-20 | 2020-02-21 | 四川航天长征装备制造有限公司 | Valve pre-deviation assembly tool and valve assembly method |
| CN111550587A (en) * | 2020-04-26 | 2020-08-18 | 九江市德昌五金机电有限公司 | Safety valve |
| TWI702355B (en) * | 2019-11-20 | 2020-08-21 | 國家中山科學研究院 | Bellows pressure regulator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI611129B (en) * | 2017-03-07 | 2018-01-11 | 峻億貿易股份有限公司 | One gauge/one turn regulator manifold |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008012406A (en) * | 2006-07-04 | 2008-01-24 | Tokyo Dies:Kk | Fluid pressure regulator and painting apparatus |
| CN201661740U (en) * | 2010-01-20 | 2010-12-01 | 浙江三方控制阀股份有限公司 | Self-operated internal feedback miniature reducing valve |
| CN102313054A (en) * | 2011-08-19 | 2012-01-11 | 浙江盾安阀门有限公司 | Piston type pressure reducing valve |
| CN202302164U (en) * | 2011-09-26 | 2012-07-04 | 薛祥元 | Piston type air pressure regulating and reducing valve |
| CN202418777U (en) * | 2012-02-14 | 2012-09-05 | 罗达莱克斯阀门(上海)有限公司 | Pressure regulator for gas supply system of natural gas vehicle engine |
| CN203286071U (en) * | 2013-05-25 | 2013-11-13 | 铜陵市三圆特种铸造有限责任公司 | High-flow balanced type pressure regulating valve |
-
2013
- 2013-05-25 CN CN201310200227.6A patent/CN103277553B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008012406A (en) * | 2006-07-04 | 2008-01-24 | Tokyo Dies:Kk | Fluid pressure regulator and painting apparatus |
| CN201661740U (en) * | 2010-01-20 | 2010-12-01 | 浙江三方控制阀股份有限公司 | Self-operated internal feedback miniature reducing valve |
| CN102313054A (en) * | 2011-08-19 | 2012-01-11 | 浙江盾安阀门有限公司 | Piston type pressure reducing valve |
| CN202302164U (en) * | 2011-09-26 | 2012-07-04 | 薛祥元 | Piston type air pressure regulating and reducing valve |
| CN202418777U (en) * | 2012-02-14 | 2012-09-05 | 罗达莱克斯阀门(上海)有限公司 | Pressure regulator for gas supply system of natural gas vehicle engine |
| CN203286071U (en) * | 2013-05-25 | 2013-11-13 | 铜陵市三圆特种铸造有限责任公司 | High-flow balanced type pressure regulating valve |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3196520A4 (en) * | 2014-07-22 | 2018-03-07 | Fisher Jeon Gas Equipment (Chengdu) Co. Ltd. | Pressure regulating valve |
| WO2016011952A1 (en) * | 2014-07-22 | 2016-01-28 | 费希尔久安输配设备(成都)有限公司 | Pressure regulating valve |
| US10247320B2 (en) | 2014-07-22 | 2019-04-02 | Fisher Jeon Gas Equipment (Chengdu) Co., Ltd. | Pressure regulating valve |
| CN104847941A (en) * | 2015-03-11 | 2015-08-19 | 北京控制工程研究所 | High-resistance non-metal membrane type pressure reducer |
| CN104963792A (en) * | 2015-07-13 | 2015-10-07 | 成都恩吉威汽车系统有限公司 | Automotive CNG pressure reducer with novel piston type pressure reducing mechanism |
| CN105673903B (en) * | 2016-04-18 | 2018-04-13 | 黄幼华 | A kind of self-balancing valve |
| CN105650314B (en) * | 2016-04-18 | 2018-03-16 | 黄幼华 | A kind of self-operated type voltage stabilizing balanced valve |
| CN105673903A (en) * | 2016-04-18 | 2016-06-15 | 黄幼华 | Self-operated balance valve |
| CN105650314A (en) * | 2016-04-18 | 2016-06-08 | 黄幼华 | Self-operated type pressure stabilizing balance valve |
| CN106224129A (en) * | 2016-07-19 | 2016-12-14 | 成都安程通科技有限公司 | A kind of energy-conservation vehicle CNG decompressor |
| CN106089499A (en) * | 2016-07-19 | 2016-11-09 | 成都安程通科技有限公司 | A kind of gas-fueled vehicles CNG decompressor |
| CN110815116A (en) * | 2019-11-20 | 2020-02-21 | 四川航天长征装备制造有限公司 | Valve pre-deviation assembly tool and valve assembly method |
| TWI702355B (en) * | 2019-11-20 | 2020-08-21 | 國家中山科學研究院 | Bellows pressure regulator |
| CN110815116B (en) * | 2019-11-20 | 2021-03-30 | 四川航天长征装备制造有限公司 | Valve pre-deviation assembly tool and valve assembly method |
| CN111550587A (en) * | 2020-04-26 | 2020-08-18 | 九江市德昌五金机电有限公司 | Safety valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103277553B (en) | 2016-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103277553B (en) | A kind of large discharge balanced type pressure regulator valve | |
| CN103256395A (en) | Modularization spool structure of large-flow balance-type pressure regulating value | |
| CN103244725B (en) | A kind of relief chamber structure of large discharge balanced type pressure regulator valve | |
| CN201672118U (en) | High pressure gas pressure reducer valve | |
| CN203286072U (en) | Modularized valve plug structure for high-flow balanced pressure regulating valve | |
| CN102425693A (en) | Adjustable high-flexibility low-pressure and stable-pressure pressure reducing valve | |
| CN203286071U (en) | High-flow balanced type pressure regulating valve | |
| CN203348661U (en) | Pressure reduction cavity structure of high-flow balanced type pressure regulating valve | |
| CN206145241U (en) | Inner piston balanced type self -operated regulator | |
| CN210461828U (en) | Flow differential pressure setting valve | |
| CN201636404U (en) | Gas pressure regulator for medium pressure gas distribution | |
| CN204922118U (en) | Relief pressure valve structure with adjustable pressure | |
| CN203641612U (en) | Self-operated metallic bellows regulating valve | |
| CN211117835U (en) | Device for realizing constant-pressure low-pressure gas flow increase | |
| CN208982718U (en) | A kind of VCR interface diaphragm pressure reduction valve | |
| CN201672120U (en) | Pressure-reducing valve with corrugated pipe | |
| CN211117836U (en) | Pressure reducing valve for liquefied gas | |
| CN220706508U (en) | Novel failure opening voltage regulator | |
| CN211259776U (en) | Double-outlet pressure regulating valve | |
| CN211118237U (en) | Self-adaptive pulse buffering device of pipeline conveying system | |
| CN111692392A (en) | Pressure regulating method of ultrahigh pressure self-operated pressure regulator | |
| CN208967139U (en) | A kind of gas engine pressure regulator valve | |
| CN106764040A (en) | A kind of balanced valve for gas pressure regulating valve | |
| CN206582389U (en) | A kind of balanced valve for gas pressure regulating valve | |
| CN219866472U (en) | Direct-acting pressure reducing valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20160525 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |