CN201582458U - High precision quick reaction pilot valve - Google Patents
High precision quick reaction pilot valve Download PDFInfo
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- CN201582458U CN201582458U CN2009202974934U CN200920297493U CN201582458U CN 201582458 U CN201582458 U CN 201582458U CN 2009202974934 U CN2009202974934 U CN 2009202974934U CN 200920297493 U CN200920297493 U CN 200920297493U CN 201582458 U CN201582458 U CN 201582458U
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Abstract
The utility model discloses a high precision quick reaction pilot valve, which mainly consists of a valve body, a pressure-regulating valve port, a pressure-regulating membrane assembly, a damping valve port, and a damping membrane assembly, wherein a valve cavity communicated with a front pressure air flow leading-in interface and arranged in the valve body forms a distribution passage with a pressure-regulating gas passage communicated with a pressure-regulating sensing interface, and a pressure-regulating valve core and a damping valve core are capable of displacing along with the pressure fluctuation of a main pipeline to form a variable damping pressure-regulating structure. The utility model is capable of collecting the pressure fluctuation in the sensing gas pipeline quickly and transmitting the pressure-regulating command signals to a pressure regulator in time, thereby having remarkable effects in improving the pressure-regulating reaction speed and the pressure-regulating precision, being particularly suitable for the matched mounting and use with an indirect acting pressure regulator, being extensively applicable in the pressure regulating and stabilizing operations for gas pipelines with large high/middle pressure flow rate and instantaneous changing magnitude, and having the remarkable advantages of high regulating reaction speed and regulating precision, excellent pressure-regulating stability and excellent market application prospect.
Description
Technical field:
The utility model relates to a kind of control valve unit, especially a kind of pilot valve.Its supporting indirect acting type pressure governor that is installed on send burning line to carry out quick voltage-regulation voltage-stabilization operation to transmission ﹠ distribution.
Background technique:
We know, guarantee that it is to want to regulate and control in time fast the pressure of institute's delivery of fuel gas to keep stable that transmission ﹠ distribution are sent the key of the normal operation of gas pipeline system (for example: rock gas, coal gas, liquefied petroleum gas (LPG), gas, CNG etc.) safety.But transmission ﹠ distribution are sent fuel tube to tie up to and should be subjected to upstream amblent air temperature temperature variation to cause the influence of bleed pressure momentary fluctuation in the actual moving process, be subjected to the influence of uncertain factor such as increase and decrease at random of downstream user gas consumption again.The staggered effect of many uncertain factors will cause the pressure of institute's conveying gas to occur than great fluctuation process.When exceeding safety value, causes air pressure fluctuation the device security accident easily.Petrochemical industry department and gas company always are that employing installs the technical measures of pressure governor and control air pressure and bigger fluctuation occurs on the gas transmission main pipe.The basic structure principle of existing pressure governor is: be equipped with the homophony diaphragm unit on the pressure governor main valve body, the line pressure fluctuation signal acted on the homophony diaphragm unit and then drive the upper and lower displacement of homophony spool and realize the pressure regulation operation.Pressing force signal input action mode difference is divided into direct acting type and indirect acting type pressure governor two big classes, so-called direct acting type pressure governor is exactly the main line Pressure Fluctuation Signal directly to be imported the homophony diaphragm unit that acts on main valve body carry out the pressure regulation operation, it has the fast advantage of pressure regulation reaction velocity, be suitable for the critical defect that pressure is low, the pressure regulation precision is low and operating life is short but exist, in general be difficult to be applicable to the mesohigh gas transmission line system high the pressure regulation required precision.And the indirect acting type pressure governor is to import the homophony diaphragm unit that acts on main valve body again after the independent pilot valve of main line Pressure Fluctuation Signal input is carried out throttling and handles to carry out the pressure regulation operation, it has the remarkable advantage of suitable pressure height, pressure regulation precision height and long working life, but also exists the slow use defective of pressure regulation reaction velocity.For example: " indirect acting type pressure governor " product that existing a kind of utility model patent (ZL200720078869.3) technology implementation that proposes by the applicant of generally using is made, it is exactly to carry out remaking the diaphragm unit that is used for main valve after the throttling in the secondary pilot valve (being pilot valve) that damping is a definite value and carry out the pressure regulation operation press importing before the main pipe to be set by pressure regulating screw, and after measured: its pressure regulation reaction velocity (generally being pressure surge to the duration of realizing pressure regulation to occur with pipeline to represent) is 1.5 to 2 seconds.For another example: the product that is called utility model patent (ZL200820063920.8) the enforcement manufacturing of " ultrahigh pressure indirect acting type pressure governor " by a kind of name of the applicant's proposition, it is with closing stop valve behind the pressure gas stream input pilot valve (being pilot valve) before the pipeline damping to be set at definite value earlier, then the line pressure fluctuation signal is imported the diaphragm unit of importing main valve after throttling is handled again and carry out the pressure regulation operation, after measured: its pressure regulation reaction velocity also only is 1.0 to 1.2 seconds.At present petrochemical industry department and gas company be for for guaranteeing device security, and the pressure regulation reaction velocity of pressure governor has been proposed higher technical requirements: its requirement is applicable to that the pressure regulation reaction velocity of the gas transmission line system that the big flow of mesohigh and transient change amplitude are big is 0.5 to 0.8 second.We can say that existing indirect acting type pressure governor product can not satisfy usage requirement.Study carefully the reason that it influences the pressure regulation reaction velocity: mainly be with the supporting existing pilot valve of indirect acting type pressure governor on structural design unreasonable due to, specifically show as existing pilot valve still follows " damping value immobilize type " on structural design traditional experience.Just because of the unreasonable structure of continuing to use traditional " damping is made as definite value ", delayed pilot valve greatly for the inductive pick-up of line pressure fluctuation signal, the transmission processing time of throttling conversion.How could effectively accelerate pilot valve to the transmission processing rate of line pressure fluctuation signal and then the pressure regulation reaction velocity of raising indirect acting type pressure governor? this problem to be solved in the utility model just.
Summary of the invention:
The purpose of this utility model is intended to propose a kind of pilot valve of damping various type structure.It and the supporting use of indirect acting type pressure governor can obviously improve the pressure regulation reaction velocity, and the gas pipeline system that is particularly suitable for being installed on the big flow of mesohigh carries out quick pressure regulation operation.
The high-precision quick response pilot valve that the utility model proposes is realized by following technological scheme: it comprises valve body, be installed on the pressure regulation valve port of valve body, the pressure regulation valve gap, in valve body, done valve pocket, the pressure regulation air flue, equipped spring in valve pocket, adjusting pressuring valve core constitutes preposition pressure regulation restriction, valve body is provided with preceding pressure gas stream introducting interface that communicates with valve pocket and the pressure regulation that communicates with pressure regulation air flue induction interface, it is characterized in that: between pressure regulation valve port and pressure regulation valve gap, be fitted with the voltage regulation diaphragm assembly, said adjusting pressuring valve core is connected in the voltage regulation diaphragm assembly, in the pressure regulation valve gap, be fitted with pressure adjusting spring, in the pressure regulation valve port, be provided with intercommunicating pore that communicates with the pressure regulation air flue and the back pressure pressure regulation interface that communicates with film chamber on the voltage regulation diaphragm assembly, the damping valve port is installed on valve body is constituted the damping cavity that communicates with the pressure regulation air flue, valve body is provided with the air-flow export interface that communicates with damping cavity, the damped diaphragm assembly is installed on the damping valve port, the damping valve gap, in the damping valve port, be fitted with the damping spool that is connected in the damped diaphragm assembly and constitute rearmounted damping throttling opening, be fitted with damping spring in the damping valve gap, the damping valve port is provided with the back pressure drag Buddhist nun interface that communicates with the bottom film chamber of damped diaphragm assembly.
The utility model also has following technical characteristics:
Damping spring seat place at damping spring is fitted with the damping screw rod, can regulate the precompression of damping spring easily.
Pressure adjusting spring seat place at pressure adjusting spring is fitted with screw press, can regulate the precompression of pressure adjusting spring easily.
Said adjusting pressuring valve core is fixedly connected on the connecting screw rod of voltage regulation diaphragm assembly, can effectively improve the speed of pilot valve to the induction of line pressure fluctuation signal, throttling, transmission.
Said adjusting pressuring valve core surface is coated with the rubber material layers, and the throttling that can effectively improve preposition pressure regulation restriction becomes the damping working condition.
Said damping spool is fixedly connected on the connection pedestal of damped diaphragm assembly, and this has positive effect to the speed that improves pilot valve induction, throttling and transmission Pressure Fluctuation Signal.
Bottom end at the damping spool is embedded with rubber pad, and the throttling that can effectively improve rearmounted damping throttling opening becomes the damping working condition.
It is to be fitted to the indirect acting type pressure governor as follows to carry out pressure regulation work:
Placement is installed: the main valve body of indirect acting type pressure governor is installed on the gas transmission main pipe of required pressure regulation, the pressure regulation signal tube that will be connected in the pressure regulation induction interface of pilot valve again is connected in the bottom film chamber of main valve body bellows, the preceding pressure ram's horns that is communicated in the supplying tube pipe end is connected in the preceding pressure gas stream introducting interface of pilot valve, the reflow pipe that is connected in the air-flow export interface is communicated in the output tube pipe end and constitutes the split channel in parallel with pressure governor, will be communicated in the pressure regulation tracheae of output tube pipe end at last, the damping tracheae, the back is pressed signal tube to be connected to the back and is pressed the pressure regulation interface, back pressure drag Buddhist nun interface, the last film chamber of main valve body bellows gets final product.
The pressure regulation working principle: at first preset damping screw rod, screw press can be opened preposition pressure regulation restriction, the rearmounted damping throttling opening in the pilot valve, form by preceding pressure ram's horns, preposition pressure regulation restriction, pressure regulation air flue, rearmounted damping throttling opening in pilot valve to the split channel of reflow pipe.By promoting to move on the homophony diaphragm unit in the bottom film chamber of pressure regulation signal tube with the importing of the air pressure in pressure regulation air flue main valve body bellows, can open the homophony spool and make the gas transmission main pipe be the gas transmission state.Air pressure in the main pipe output tube (being commonly called as " press the back ") signal will be imported into respectively in the last film chamber of bottom film chamber, voltage regulation diaphragm assembly of last film chamber, the damped diaphragm assembly of main valve body bellows, and accurate adjustment damping screw rod, screw press can make output pressure reach the rated pressure value that gas transmission and distribution send the working regulation defined again.This moment, homophony diaphragm unit, interior damped diaphragm assembly, the voltage regulation diaphragm assembly of pilot valve of pressure governor main valve body all were in the transient equilibrium location status, that is to say that the opening of the homophony spool in the main valve body, the rearmounted damping throttling opening of pilot valve internal damping spool, the preposition pressure regulation restriction of adjusting pressuring valve core are the open degree of state of equilibrium.In fact, this is that pilot valve inside is subjected to gas transmission main pipe " preceding pressure ", " then press " and pressure adjusting spring, the common compound action relative equilibrium of damping spring and externally presents the relatively-stationary transient equilibrium state of damping, and then makes the interior shunting gas of pressure regulation air flue of flowing through also be in temporarily uniform speed motion state stably.Bleed pressure is under the constant situation of main pipe supplying tube internal air pressure (being commonly called as " preceding pressure ") in the supposition upstream, when causing the back voltage rise high: the pressure regulation tracheae that is communicated in output tube when the minimizing of downstream gas consumption, the damping tracheae respectively will " then press " elevated pressure signal imports in the bottom film chamber of the last film chamber of voltage regulation diaphragm assembly of pilot valve and damped diaphragm assembly, will promote the voltage regulation diaphragm assembly, the damped diaphragm assembly departs from the equilibrium position respectively and drives adjusting pressuring valve core and moves down the open degree that reduces preposition pressure regulation restriction, drive and move the open degree that increases rearmounted damping throttling opening on the damping spool.That is to say: rising increases, raising reduces to form the pressure regulation mechanism of " damping various type " with " back pressure " in rearmounted damping with " press the back " in the preposition damping of adjusting air flue.Pressure regulation air flue interior airspeed and pressure descend fast because the damping change of adjusting air flue causes flowing through, and at this moment the gas in the pressure governor bellows bottom film chamber will flow to the pressure regulation air flue and step-down by the pressure regulation signal tube.Just raising descends because the air pressure in the pressure governor bellows bottom film chamber is with " back pressure ", the homophony diaphragm unit will depart from the equilibrium position and drive the homophony spool and move down fast and reduce open degree, can reduce " press the back " send the working regulation defined to gas transmission and distribution rated pressure value in quick and stable ground.When the downstream gas consumption increases and causes " press the back " when reducing: in like manner, as mentioned above, the homophony diaphragm unit will drive the homophony spool and move the increase open degree on fast, and quick and stable ground increases " back pressure " send the working regulation defined to gas transmission and distribution rated pressure value.Elsewhere, under " then press " constant situation, when fluctuation appears in " preceding pressure ": because the rising of " preceding pressure " or reduce airspeed and pressure synchronization fluctuate in the pressure regulation air flue that both can directly cause pilot valve, also can cause " press the back " the synchronization lifting fluctuation to occur simultaneously, in like manner, as mentioned above, the homophony diaphragm unit will drive homophony spool fast offset and regulate open degree, and quick adjustment " press the back " is to the rated pressure value.Even under " preceding pressure " and " press the back " situation that fluctuation changes simultaneously,, regulate delivery pressure with can both realizing quick and stable and remain stable purpose according to as a same reason above-mentioned.
The utlity model has following substantive distinguishing features and progress:
1. the pilot valve that the utility model proposes, it is that the pressure regulation air flue that is provided with in valve body by preposition pressure regulation restriction, the control of rearmounted damping throttling opening forms split channel, and its preposition damping and rearmounted damping all can change the pressure adjusting structure that forms the damping various type with the pressure surge in the main pipe.Change the air motion state that changes fast in the pressure regulation air flue by the pilot valve internal damping, can respond to fast and handle the internal pressure fluctuation of conduction main pipe and, obviously improve the pressure regulation reaction velocity and the pressure regulation precision of pressure governor in time to pressure governor output pressure regulation signal.
The utility model structural design novelty, produce easily, low cost of manufacture, easy to install, have suitable pressure height, the pressure regulation reaction velocity is fast, degree of regulation is high, range of regulation is wide and output pressure is stable remarkable advantage, it is particularly suitable for carrying out quick pressure regulation operation with supporting the installing and using in the gas pipeline system of big flow of mesohigh and momentary fluctuation vary within wide limits of indirect acting type pressure governor.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A view of Fig. 1, shows the structural representation of the preceding pressure gas stream introducting interface that communicates with valve pocket.
Fig. 3 is the equipped voltage-regulation principle structural drawing of installing and using in the gas transmission main pipe of the utility model and indirect acting type pressure regulator valve.
Embodiment:
A kind of high-precision quick response pilot valve, it is mainly by valve body 27, pressure regulation valve port 23, voltage regulation diaphragm assembly 19, pressure regulation valve gap 12, pressure adjusting spring 16, pressure adjusting spring seat 18, screw press 17, damping valve port 29, damped diaphragm assembly 32, damping valve gap 31, damping spring 3, damping spring seat 2, damping screw rod 1 constitutes, do the valve pocket 9 that communicates with preceding pressure gas stream introducting interface 37 in the valve body 27, the pressure regulation air flue 26 that communicates with pressure regulation induction interface 24, the spring 22 that in valve pocket 9, is equipped with, adjusting pressuring valve core 20 constitutes preposition pressure regulation restriction 14 with pressure regulation valve port 23, said adjusting pressuring valve core 20 is fixedly connected on the connecting screw rod 15 of voltage regulation diaphragm assembly 19, surperficial rubber-coated material layers at adjusting pressuring valve core 20, the throttling that improves adjusting pressuring valve core 20 is become the damping working condition have certain effect, in pressure regulation valve port 23, do the intercommunicating pore 21 that communicates with pressure regulation air flue 26, the back pressure pressure regulation interface 11 that communicates with the last film chamber 13 of voltage regulation diaphragm assembly 19, the upper-end surface that said damping valve port 29 is fixedly installed in valve body 27 constitutes the damping cavity 38 that communicates with pressure regulation air flue 26, in valve body 27, do the vent 35 that is communicated with damping cavity 38 and air-flow export interface 5, in damping valve port 29, be fitted with damping spool 30 and constitute rearmounted damping throttling opening 28, damping spool 30 is fixedly connected on the connection pedestal 33 of damped diaphragm assembly 32, bottom end setting-in rubber pad at damping spool 30, can effectively improve the change damping cutting condition of damping spool 30, damping valve port 29 is provided with the back pressure drag Buddhist nun interface 4 that communicates with the bottom film chamber 34 of damped diaphragm assembly 32.It is as follows with the supporting Placement that is installed on the indirect acting type pressure governor on the gas transmission main pipe: the preceding pressure ram's horns 36 that will be communicated in supplying tube 42 pipe ends respectively is connected in the preceding pressure gas stream introducting interface 37 of pilot valve, the reflow pipe 7 that is communicated in output tube 39 pipe ends is connected in air-flow export interface 5 and constitutes split channel as shown in arrow 8, the pressure regulation tracheae 10 of output tube 39 will be communicated in, damping tracheae 6, the back is pressed signal tube 48 to be connected to the back and is pressed pressure regulation interface 11, back pressure drag Buddhist nun interface 4, the last film chamber 46 of the bellows 44 of pressure governor main valve body 43, the bottom film chamber 47 that the last pressure regulation signal tube 25 that will be connected in pressure regulation induction interface 24 again is connected in bellows 44 gets final product.It is to carry out the pressure regulation operation as follows: earlier operation screw press 17 and damping screw rod 1 are slowly opened the preposition pressure regulation restriction 14 in the pilot valve, rearmounted damping throttling opening 28 forms split channels: in the supplying tube 42 shunting before calm the anger body by preceding pressure ram's horns 36 import valve pockets 9, through preposition pressure regulation restriction 14, intercommunicating pore 21, pressure regulation air flue 26, damping cavity 38, rearmounted damping throttling opening 28, vent 35, again by reflow pipe 7 input output pipes 39 in.By pressure regulation signal tube 25 the preceding pressures shunting gases in the pressure regulation air flue 26 are imported in the bottom film chamber 47 of bellows 44 and promote to move on the homophony diaphragm unit 45, can open the homophony spool 41 in the main valve body 43, institute's conveying gas in the motion state in the main pipe shown in hollow arrow 40.The air pressure signal that enters in the output tube 39 will be pressed signal tube 48 by the back respectively, damping tracheae 6, pressure regulation tracheae 10 imports the last film chamber 46 of homophony diaphragm unit 45, the bottom film chamber 34 of damped diaphragm assembly 32, in the last film chamber of voltage regulation diaphragm assembly 19 in 13, accurate adjustment damping screw rod 1 again, screw press 17 can make output pressure reach to meet the rated pressure value that gas transmission and distribution send the working regulation defined, at this moment, homophony diaphragm unit 45 in the pressure governor bellows 44, damped diaphragm assembly 32 in the pilot valve, voltage regulation diaphragm assembly 19 all is in the equilibrium position state, the rearmounted damping throttling opening 28 of the opening of pressure governor homophony spool 41 and pilot valve internal damping spool 30, the preposition pressure regulation restriction 14 of adjusting pressuring valve core 20 is the open degree of state of equilibrium.It is performed such quick pressure regulation operation: supposition " preceding pressure " is constant, when reducing, the downstream gas consumption cause " press the back " when raising: the back pressure signal tube 48 that is communicated in main pipe output tube 39, pressure regulation tracheae 10, damping tracheae 6 can import the last film chamber 46 of pressure governor homophony diaphragm unit 45 with " back pressure " elevated pressure signal respectively, in the last film chamber 13 of the voltage regulation diaphragm assembly 19 of pilot valve and the bottom film chamber 34 of damped diaphragm assembly 32, voltage regulation diaphragm assembly 19, damped diaphragm assembly 32 can depart from the equilibrium position and drive adjusting pressuring valve core 20 and moves down the open degree that reduces preposition pressure regulation restriction 14, drive and move the open degree that increases rearmounted damping throttling opening 28 on the damping spool 30, the preposition damping of regulating air flue 26 is increased, rearmounted deattenuation and cause airspeed and pressure in the pressure regulation air flue 26 to descend, the gases in the bottom film chamber 47 of pressure governor homophony diaphragm unit 45 can flow to pressure regulation air flue 26 and step-down fast.So far, homophony diaphragm unit 45 will depart from the equilibrium position and drive homophony spool 41 and moves down and reduce opening, can reduce " press the back " and stable to the rated pressure value.
In like manner, stablize under the constant situation in supposition " preceding pressure ", when the downstream gas consumption increases and cause " press the back " reduction: as mentioned above, homophony diaphragm unit 45 will drive homophony spool 41 and move on fast and increase open degree, and " press the back " and stable rated pressure value of sending the working regulation defined to gas transmission and distribution reposefully can raise.
Elsewhere, suppose that " press the back " is constant, when upstream bleed pressure when promptly the lifting fluctuation appears in " preceding pressure ": because the rising or the reduction of " preceding pressure " can directly cause " press the back " synchronous lifting fluctuation to occur, and synchronization fluctuate appears in pressure regulation air flue 26 interior airspeed and the pressure that cause pilot valve simultaneously, reason as mentioned above, homophony diaphragm unit 45 also will drive 41 displacements of homophony spool and regulate its open degree, regulate control " press the back " and stable to the rated pressure value fast in time.Even under " preceding pressure " and " press the back " situation that fluctuation changes simultaneously, can both realize regulating and control fast delivery pressure and keep stable purpose.
The high-precision quick response pilot valve that the utility model proposes has that inductive transfer Pressure Fluctuation Signal speed is fast, degree of regulation is high, be suitable for remarkable advantages such as the big and range of regulation of pressure high flow capacity is wide, be particularly suitable for carrying out quick voltage-regulation voltage-stabilization operation with supporting the installing and using of indirect acting type pressure governor in the gas pipeline system of the big flow of mesohigh, can obviously improve the pressure regulation reaction velocity, detect according to practical probation: its pressure regulation reaction velocity reaches 0.3 to 0.5 second advanced level.
The foregoing description only is one of concrete mode of the damping various type voltage-regulating technique scheme that can realize that the utility model proposes; do not constitute restriction, also should comprise other mode of execution that those skilled in the art can change according to the technological scheme that the utility model proposes the claimed scope of the utility model.
Claims (7)
1. high-precision quick response pilot valve, it comprises valve body (27), be installed on the pressure regulation valve port (23) of valve body (27), pressure regulation valve gap (12), in valve body (27), done valve pocket (9), pressure regulation air flue (26), equipped spring (22) in valve pocket (9), adjusting pressuring valve core (20) constitutes preposition pressure regulation restriction (14), valve body (27) is provided with preceding pressure gas stream introducting interface (37) that communicates with valve pocket (9) and the pressure regulation that communicates with pressure regulation air flue (26) induction interface (24), it is characterized in that: between pressure regulation valve port (23) and pressure regulation valve gap (12), be fitted with voltage regulation diaphragm assembly (19), said adjusting pressuring valve core (20) is connected in voltage regulation diaphragm assembly (19), in pressure regulation valve gap (12), be fitted with pressure adjusting spring (16), in pressure regulation valve port (23), be provided with intercommunicating pore (21) that communicates with pressure regulation air flue (26) and the back pressure pressure regulation interface (11) that communicates with the last film chamber (13) of voltage regulation diaphragm assembly (19), go up installation damping valve port (29) at valve body (27) and constitute the damping cavity (38) that communicates with pressure regulation air flue (26), valve body (27) is provided with the air-flow export interface (5) that communicates with damping cavity (38), damped diaphragm assembly (32) is installed on damping valve port (29), damping valve gap (31), in damping valve port (29), be fitted with the damping spool (30) that is connected in damped diaphragm assembly (32) and constitute rearmounted damping throttling opening (28), be fitted with damping spring (3) in the damping valve gap (31), damping valve port (29) is provided with the back pressure drag Buddhist nun interface (4) that communicates with the bottom film chamber (34) of damped diaphragm assembly (32).
2. high-precision quick response pilot valve according to claim 1 is characterized in that: the damping spring seat (2) at damping spring (3) locates to be fitted with damping screw rod (1).
3. high-precision quick response pilot valve according to claim 1 and 2 is characterized in that: the pressure adjusting spring seat (18) at pressure adjusting spring (16) locates to be fitted with screw press (17).
4. high-precision quick response pilot valve according to claim 1 and 2 is characterized in that: said adjusting pressuring valve core (20) is fixedly connected on the connecting screw rod (15) of voltage regulation diaphragm assembly (19).
5. high-precision quick response pilot valve according to claim 1 and 2 is characterized in that: said adjusting pressuring valve core (20) surface is coated with the rubber material layers.
6. high-precision quick response pilot valve according to claim 1 and 2 is characterized in that: said damping spool (30) is fixedly connected on the connection pedestal (33) of damped diaphragm assembly (32).
7. high-precision quick response pilot valve according to claim 1 and 2 is characterized in that: the bottom end at damping spool (30) is embedded with rubber pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202974934U CN201582458U (en) | 2009-12-22 | 2009-12-22 | High precision quick reaction pilot valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202974934U CN201582458U (en) | 2009-12-22 | 2009-12-22 | High precision quick reaction pilot valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201582458U true CN201582458U (en) | 2010-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202974934U Expired - Fee Related CN201582458U (en) | 2009-12-22 | 2009-12-22 | High precision quick reaction pilot valve |
Country Status (1)
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| CN (1) | CN201582458U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709800B (en) * | 2009-12-22 | 2011-09-28 | 袁勇 | High-precision quick response pilot valve |
| CN104358904A (en) * | 2014-11-25 | 2015-02-18 | 四川长仪油气集输设备股份有限公司 | Diaphragm type control valve |
| 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 |
| CN110274065A (en) * | 2019-07-03 | 2019-09-24 | 上海飞奥燃气设备有限公司 | A kind of gas pressure regulator, governor anti-surge installation |
| CN116695061A (en) * | 2023-07-31 | 2023-09-05 | 上海宇泽机电设备有限公司 | Uniform air supply device for vacuum plating of alumina film |
-
2009
- 2009-12-22 CN CN2009202974934U patent/CN201582458U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709800B (en) * | 2009-12-22 | 2011-09-28 | 袁勇 | High-precision quick response pilot valve |
| CN104358904A (en) * | 2014-11-25 | 2015-02-18 | 四川长仪油气集输设备股份有限公司 | Diaphragm type control valve |
| 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 |
| CN110274065A (en) * | 2019-07-03 | 2019-09-24 | 上海飞奥燃气设备有限公司 | A kind of gas pressure regulator, governor anti-surge installation |
| CN116695061A (en) * | 2023-07-31 | 2023-09-05 | 上海宇泽机电设备有限公司 | Uniform air supply device for vacuum plating of alumina film |
| CN116695061B (en) * | 2023-07-31 | 2023-11-03 | 上海宇泽机电设备有限公司 | Uniform air supply device for vacuum plating of alumina film |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: LESHAN CHUANTIAN GAS EQUIPMENT CO., LTD. Assignor: Yuan Yong Contract record no.: 2010510000134 Denomination of utility model: High-precision quick response pilot valve Granted publication date: 20100915 License type: Exclusive License Record date: 20101213 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20121222 |