CN105386894A - High-pressure large-transformation-ratio flow regulating valve - Google Patents
High-pressure large-transformation-ratio flow regulating valve Download PDFInfo
- Publication number
- CN105386894A CN105386894A CN201510920518.1A CN201510920518A CN105386894A CN 105386894 A CN105386894 A CN 105386894A CN 201510920518 A CN201510920518 A CN 201510920518A CN 105386894 A CN105386894 A CN 105386894A
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- China
- Prior art keywords
- pressing plate
- restricting orifice
- adjustable lever
- stepping motor
- linear stepping
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/44—Feeding propellants
- F02K9/56—Control
- F02K9/58—Propellant feed valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention relates to a high-pressure large-transformation-ratio flow regulating valve which is composed of a linear stepping motor, a regulating rod, a machine frame, a throttling pore plate, a saddle-shaped gasket, a lock nut, a shell, a pressing plate and the like. A driving mechanism comprises the linear stepping motor. A regulation part is composed of the regulating rod and the throttling pore plate. The linear stepping motor is connected with the shell through the machine frame. A shaft of the linear stepping motor and the regulating rod are connected together and locked tightly through the saddle-shaped gasket and the lock nut. The throttling pore plate is installed inside the shell in a pressed mode through the pressing plate. The throttling pore plates with different pore diameters can be replaced according to different flow regulation ranges. In order to guarantee the sealing performance under high pressure, motive seal positions of external leakage are sealed through two O-shaped rubber rings. In the flow regulation process, a control signal is input to the linear stepping motor, the linear stepping motor drives a regulation element to move upwards and downwards, the flow area of the throttling pore plate is changed, and accordingly flow regulation is achieved.
Description
Technical field
The present invention relates to a kind of high pressure large velocity ratio flow control valve, the multiple liquid propellant rocket engine needing adjust flux can be adapted to.
Background technique
Variable thrust rocket engine has the advantage of adjustable thrust, is the optimal selection of some aerospace craft system.As the space shuttle main engine SSME of the U.S., thrust can change within the scope of 50 ~ 109% normal thrusts, and China CE-3 moon master motor that falls also has the thrust no-load voltage ratio of 5:1.In variable thrust liquid rocket engine, often need to use flow control valve, in Operation Process of Liquid Rocket Engine, change the flow of propellant agent.
Existing single constituent element flow control valve does not possess changes restricting orifice thus the function of adjust flux scope, the regulating element displacement of most of flow control valve and flow disproportionate, control more complicated.In the development of certain rocket motor, propellant agent is the hydrogen peroxide with severe corrosive, and system pressure is high, and changes in flow rate scope is large, needs to adapt to different operating modes, devises this high pressure large velocity ratio flow control valve for this reason.
Summary of the invention
In order to solve the existing technical problem that single constituent element flow control valve restricting orifice can not be changed, flow condition is inaccurate, control more complicated, the present invention propose a kind of control simple, degree of regulation is high and flow no-load voltage ratio large, can adapt to the flow control valve of different operating mode.
Technical solution of the present invention is:
A kind of high pressure large velocity ratio flow control valve, comprise housing 6, be arranged on inlet channel 15 on housing 6 and outlet passage 16, be provided with Flow-rate adjustment assembly between described inlet channel 15 and outlet passage 16, its special way is:
Described Flow-rate adjustment assembly comprises restricting orifice 7, adjustable lever 5, linear stepping motor 1 and pressing plate 8,
Described inlet channel 15 is connected by the liquid reservoir 17 be arranged in housing with between outlet passage 16, and described restricting orifice 7 is arranged in liquid reservoir 17, described restricting orifice 7 is provided with the throttle orifice 71 being communicated with inlet channel 15 and outlet passage 16;
Described adjustable lever 5 is coaxial with the output shaft of linear stepping motor 1, and described adjustable lever 5 is divided into fastening part 51 and adjustment portion 52, and described fastening part 51 is fixedly connected with the output shaft of linear stepping motor 1, and the diameter of described adjustment portion 52 is changes;
The just right end housing place of described restricting orifice 7 is provided with adjustable lever via hole 18, and described adjustable lever via hole 18 communicates with liquid reservoir 17, and adjustable lever via hole 18 is coaxial with throttle orifice 71;
The just right the other end housing place of described restricting orifice 7 is provided with restricting orifice mounting hole 19, described restricting orifice mounting hole 19 communicates with liquid reservoir 17, described pressing plate 8 is arranged on restricting orifice mounting hole 19 place, described pressing plate 8 is detachably fixedly connected with between housing 6, and the axis of pressing plate 8 is provided with the pressing plate via hole 81 coaxial with throttle orifice 71;
The adjustment portion of described adjustable lever 5 is successively through coaxial the adjustable lever via hole 18, throttle orifice 71 and the pressing plate via hole 81 that arrange, and adjustable lever changes restricting orifice 7 medium circulation area under the drive of linear stepping motor 1;
Described high pressure large velocity ratio flow control valve also comprises seal arrangement, described seal arrangement comprise be arranged between restricting orifice and housing by first seal element sealing 9; Described adjustable lever via hole 18 place is also provided with for realizing the second seal element 10 sealed between adjustable lever and housing, described pressing plate via hole 81 place is also provided with for realizing the 3rd seal element 11 sealed between adjustable lever and pressing plate, and described restricting orifice mounting hole 19 place is also provided with for realizing the 4th seal element 12 sealed between pressing plate and housing.
Be more than basic structure of the present invention, based on this basic structure, the present invention also makes following optimization and limits:
For ensureing that the output shaft of linear stepping motor 1 is connected with the reliable of adjustable lever 5, realize the output shaft of linear stepping motor 1 and the coaxial shape of adjustable lever 5 and synchronism, so that the fine adjustment of flow, the axle head of the output shaft of linear stepping motor 1 of the present invention is processed into bolt; The axle center of the fastening part 51 of described adjustable lever 5 is provided with the bolt hole 511 that to match with the output shaft of linear stepping motor 1, and the head of described bolt hole is also provided with one section of guiding unthreaded hole 512;
The output shaft of described linear stepping motor 1 is also provided with locking nut 3 and pad 4, described locking nut 3 and pad 4 are successively set between the head of bolt and adjustable lever 5 end face, when output shaft and adjustable lever 5 screw threads for fastening of linear stepping motor 1, tighten locking nut 3 and formed lock.
Further, inlet channel 15 of the present invention is set in parallel in liquid reservoir 17 both sides with outlet passage 16, and described liquid reservoir 17 is perpendicular to inlet channel 15 and outlet passage 16.It is reliable and coaxial that the advantage of this topology layout is that stepper motor output shaft is connected with adjustable lever, and flow through the axis of flow direction along restricting orifice of restricting orifice, no liquid flows to the impact of deviation, and all liq all to flow through and flow coefficient is stablized from restricting orifice.
Further, liquid reservoir 17 of the present invention comprises coaxial inlet liquid cavity volume 171 and outlet liquid reservoir 172, described inlet liquid cavity volume 171 is column with outlet liquid reservoir 172, and the diameter of inlet liquid cavity volume 171 is less than the diameter of outlet liquid reservoir 172, between inlet liquid cavity volume 171 and outlet liquid reservoir 172, define restricting orifice attachment face 173;
Described restricting orifice 7 is positioned at restricting orifice attachment face 173 place, described restricting orifice 7 comprises large end 73 and the small end 72 of coaxial setting, described large end 73 is positioned at outlet liquid reservoir 172, described small end 72 is positioned at Inlet fluid cavity volume 171, and described first seal element is arranged between restricting orifice 7 and restricting orifice attachment face 173.
The advantage of this structure qualification is, seal element can ensure that all liq all flows through from restricting orifice and shunts without other, it is coaxial that the small end of restricting orifice and housing coordinate guiding to ensure, liquid reservoir is slightly large after ensureing liquid throttling, have enough pressure stability regions in outlet, make flow coefficient and outlet pressure more stable.
Further, pressing plate of the present invention is divided into construction section 82, seal section 83 and hold-down segment 84 vertically successively, described peace seal section 83 and hold-down segment 84 are cylindrical and coaxial, gabarit and housing 6 place of described construction section 82 are all square, the diameter of described seal section 83 and the diameter of restricting orifice mounting hole 19 match, the circumferencial direction of described seal section is provided with seal groove, and described 4th seal element 12 is arranged in seal groove; The head of described hold-down segment 84 props up restricting orifice 7, and described hold-down segment 84 just offers the through hole 85 (symmetrical two places) running through hold-down segment 84 radial direction to outlet flow 16 place;
Pressing plate via hole 81 comprises along hold-down segment to mounting end pressing plate first via hole 811, pressing plate second via hole 812 and pressing plate the 3rd via hole 813 that diameter reduces successively successively, hole wall along pressing plate the 3rd via hole 813 also offers two groove seal grooves, and described 3rd seal element 11 is separately positioned in two seals groove.
The advantage of the concrete structure of pressing plate of the present invention is that sealed end 83 and housing 6 coordinate guiding to ensure coaxially, pressing plate and housing are bolted can change restricting orifice according to flow adjustment range, and guarantee that outlet 85 is relative with outlet by Bolt to position, outlet 85 arranges symmetrical two places makes pressing plate uniform force, outlet pressure stable.
Further, linear stepping motor 1 of the present invention adopts through shaft type.The advantage of this structure qualification is by ball screw and motor integral design, and the stator of stepper motor directly as output shaft, and exports as straight-line displacement, reduces size and the weight of stepper motor.
For the ease of controlling during Flow-rate adjustment, being regulated by stepper motor step number as unique controling parameters, needing flow and the pressure drop of adjustment according to system, passing through formula
calculate orifice size A, thus go out the diameter of adjustable lever according to the diameter node-by-node algorithm of restricting orifice 7, gone out the adjustment profile of adjustable lever by optimal design.Production out after according to test result, simulate stepper motor regulate step number and
linear relationship formula, the flow regulated as required during adjustment and pressure drop directly calculate stepper motor regulate step number, stepper motor is regulated step number input control device, the flow of flow control valve and exportable needs and pressure drop.
The present invention's advantage is compared with prior art:
1, straight-line electric arbor of the present invention and adjustable lever element coaxially arranged, and adopt accurately guiding and reliably being connected, realize stepper motor and regulating element coaxial synchronous moves, can the reliability of guaranteed flow adjustment.Adjustable lever of the present invention and restricting orifice coaxial design, and location, adjustable lever two ends, can improve flow control accuracy, restricting orifice is fitted in housing by pressing plate, can change the restricting orifice of different pore size according to different flow adjustment range.
2, inventive flow modulating valve, valve open and the adjustment of flow does not rely on medium power, its pressure adaptation scope is large, and Flow-rate adjustment no-load voltage ratio is large, and degree of regulation is high.
3, the present invention propose a kind of volume little, lightweight, control simple, degree of regulation is high and flow no-load voltage ratio large, can adapt to the flow control valve of different operating mode;
4, stepper motor regulates step number as unique controling parameters by the present invention, and stepper motor regulate step number and
for linear approximate relationship, control simple and convenient.
Accompanying drawing explanation
Fig. 1 is high pressure large velocity ratio flow control valve of the present invention;
Fig. 2 is housing section figure of the present invention;
Fig. 3 is pressing plate sectional view of the present invention;
Fig. 4 is adjustable lever sectional view of the present invention;
Fig. 5 is restricting orifice sectional view of the present invention;
Fig. 6 be stepper motor of the present invention regulate step number and
linear relationship chart.
Wherein reference character is: 1-linear stepping motor, 2-frame, 3-locking nut, 4-saddle type pad, 5-adjustable lever, 51-fastening part, 511-bolt hole, 512-leads unthreaded hole, 52-adjustment portion, 6-housing, 7-restricting orifice, 71-throttle orifice, 8-pressing plate, 81-pressing plate via hole, 811-pressing plate first via hole, 812-pressing plate second via hole, 813-pressing plate the 3rd via hole, 82-construction section, 83-seal section, 84-hold-down segment, 85-through hole, 9-first seal element seals, 10-second seal element, 11-the 3rd seal element, 12-the 4th seal element, 15-inlet channel, 16-outlet passage, 17-liquid reservoir, 171-inlet liquid cavity volume, 172-exports liquid reservoir, 173-restricting orifice attachment face, 18-adjustable lever via hole, 19-restricting orifice mounting hole.
Embodiment
As shown in Figure 1, high pressure large velocity ratio flow control valve of the present invention is made up of linear stepping motor 1, frame 2, locking nut 3, saddle type pad 4, adjustable lever 5, housing 6, restricting orifice 7, pressing plate 8, rubber o-ring 9,10.Be connected by the liquid reservoir 17 be arranged in housing between inlet channel 15 with outlet passage 16, restricting orifice 7 is arranged in liquid reservoir 17, restricting orifice 7 is provided with the throttle orifice 71 being communicated with inlet channel 15 and outlet passage 16; Adjustable lever 5 is coaxial with the output shaft of linear stepping motor 1, adjustable lever 5 is divided into fastening part 51 and adjustment portion 52, fastening part 51 is fixedly connected with the output shaft of linear stepping motor 1, the diameter of adjustment portion 52 is changes, the just right end housing place of restricting orifice 7 is provided with adjustable lever via hole 18, adjustable lever via hole 18 communicates with liquid reservoir 17, and adjustable lever via hole 18 is coaxial with throttle orifice 71; The just right the other end housing place of restricting orifice 7 is provided with restricting orifice mounting hole 19, restricting orifice mounting hole 19 communicates with liquid reservoir 17, pressing plate 8 is arranged on restricting orifice mounting hole 19 place, detachably be fixedly connected with between pressing plate 8 with housing 6, the axis of pressing plate 8 is provided with the pressing plate via hole 81 coaxial with throttle orifice 71; The adjustment portion of adjustable lever 5 is successively through coaxial the adjustable lever via hole 18, throttle orifice 71 and the pressing plate via hole 81 that arrange, and adjustable lever changes restricting orifice 7 medium circulation area under the drive of linear stepping motor 1; High pressure large velocity ratio flow control valve also comprise sealing dress, described seal arrangement comprise be arranged between restricting orifice and housing by first seal element sealing 9; Described adjustable lever via hole 18 place is also provided with for realizing the second seal element 10 sealed between adjustable lever and housing, described pressing plate via hole 81 place is also provided with for realizing the 3rd seal element 11 sealed between adjustable lever and pressing plate, and described restricting orifice mounting hole 19 place is also provided with for realizing the 4th seal element 12 sealed between pressing plate and housing.
The axle of linear stepping motor and adjustable lever are by accurate guiding and be multiplely connected and fixed, and the axle head of the output shaft of linear stepping motor 1 is processed into bolt; The axle center of the fastening part 51 of adjustable lever 5 is provided with the bolt hole 511 that to match with the output shaft of linear stepping motor 1, the head of bolt hole is also provided with one section of guiding unthreaded hole 512, the output shaft of linear stepping motor 1 is also provided with locking nut 3 and pad 4, locking nut 3 and pad 4 are successively set between the head of bolt and adjustable lever 5 end face, when output shaft and adjustable lever 5 screw threads for fastening of linear stepping motor 1, tighten locking nut 3 and formed lock.
During use, the restricting orifice 7 of different pore size can be changed according to different flow adjustment range.Motive sealing place of external leakage all adopts two pass rubber o-ring to carry out sealing to guarantee high-pressure tightness.During Flow-rate adjustment, linear stepping motor drives adjustable lever to move vertically, changes the circulation area of medium, thus adjust flux.
Claims (7)
1. a high pressure large velocity ratio flow control valve, comprise housing (6) and be arranged on inlet channel (15) on housing (6) and outlet passage (16), be provided with Flow-rate adjustment assembly between described inlet channel (15) and outlet passage (16), it is characterized in that:
Described Flow-rate adjustment assembly comprises restricting orifice (7), adjustable lever (5), linear stepping motor (1) and pressing plate (8),
Be connected by the liquid reservoir (17) be arranged in housing between described inlet channel (15) with outlet passage (16), described restricting orifice (7) is arranged in liquid reservoir (17), described restricting orifice (7) is provided with the throttle orifice (71) being communicated with inlet channel (15) and outlet passage (16);
Described adjustable lever (5) is coaxial with the output shaft of linear stepping motor (1), described adjustable lever (5) is divided into fastening part (51) and adjustment portion (52), described fastening part (51) is fixedly connected with the output shaft of linear stepping motor (1), and the diameter of described adjustment portion (52) is change;
The just right end housing place of described restricting orifice (7) is provided with adjustable lever via hole (18), described adjustable lever via hole (18) communicates with liquid reservoir (17), and adjustable lever via hole (18) is coaxial with throttle orifice (71);
The just right the other end housing place of described restricting orifice (7) is provided with restricting orifice mounting hole (19), described restricting orifice mounting hole (19) communicates with liquid reservoir (17), described pressing plate (8) is arranged on restricting orifice mounting hole (19) place, detachably be fixedly connected with between described pressing plate (8) with housing (6), the axis of pressing plate (8) is provided with the pressing plate via hole (81) coaxial with throttle orifice (71);
The adjustment portion of described adjustable lever (5) is successively through coaxial the adjustable lever via hole (18), throttle orifice (71) and the pressing plate via hole (81) that arrange, and adjustable lever changes restricting orifice (7) medium circulation area under the drive of linear stepping motor (1);
Described high pressure large velocity ratio flow control valve also comprise sealing dress, described seal arrangement comprise be arranged between restricting orifice and housing by first seal element sealing (9); Described adjustable lever via hole (18) place is also provided with for realizing the second seal element (10) sealed between adjustable lever and housing, described pressing plate via hole (81) place is also provided with for realizing the 3rd seal element (11) sealed between adjustable lever and pressing plate, and described restricting orifice mounting hole (19) place is also provided with for realizing the 4th seal element (12) sealed between pressing plate and housing.
2. high pressure large velocity ratio flow control valve according to claim 1, is characterized in that: the diameter of adjustable lever is that by the diameter of Rectifier plate (7) and orifice size A node-by-node algorithm out orifice size A meets formula
q
mexpression system needs the flow regulated, and Δ P represents pressure drop.
3. high pressure large velocity ratio flow control valve according to claim 2, is characterized in that: the axle head of the output shaft of described linear stepping motor (1) is processed into bolt; The axle center of the fastening part (51) of described adjustable lever (5) is provided with the bolt hole (511) that to match with the output shaft of linear stepping motor (1), and the head of described bolt hole is also provided with one section of guiding unthreaded hole (512);
The output shaft of described linear stepping motor (1) is also provided with locking nut (3) and pad (4), described locking nut (3) and pad (4) are successively set between the head of bolt and adjustable lever (5) end face, when output shaft and adjustable lever (5) screw threads for fastening of linear stepping motor (1), tighten locking nut (3) and formed lock.
4. high pressure large velocity ratio flow control valve according to claim 3, is characterized in that:
Described inlet channel (15) and outlet passage (16) are set in parallel in liquid reservoir (17) both sides, and described liquid reservoir (17) is perpendicular to inlet channel (15) and outlet passage (16).
5. high pressure large velocity ratio flow control valve according to claim 4, is characterized in that:
Described liquid reservoir (17) comprises coaxial inlet liquid cavity volume (171) and outlet liquid reservoir (172), described inlet liquid cavity volume (171) is column with outlet liquid reservoir (172), and the diameter of inlet liquid cavity volume (171) is less than the diameter of outlet liquid reservoir (172), between inlet liquid cavity volume (171) and outlet liquid reservoir (172), define restricting orifice attachment face (173);
Described restricting orifice (7) is positioned at restricting orifice attachment face (173) place, described restricting orifice (7) comprises large end (73) and the small end (72) of coaxial setting, described large end (73) is positioned at outlet liquid reservoir (172), described small end (72) is positioned at Inlet fluid cavity volume (171), and described first seal element is arranged between restricting orifice (7) and restricting orifice attachment face (173).
6. the high pressure large velocity ratio flow control valve according to claim 1 or 2 or 3 or 4 or 5, it is characterized in that: described pressing plate is divided into construction section (82) vertically successively, seal section (83) and hold-down segment (84), described construction section (82), seal section (83) and hold-down segment (84) are cylindrical and coaxial, the diameter of described construction section (82) is greater than the diameter of restricting orifice mounting hole (19), the diameter of described seal section (83) and the diameter of restricting orifice mounting hole (19) match, the circumferencial direction of described seal section is provided with seal groove, described 4th seal element (12) is arranged in seal groove, the head of described hold-down segment (84) props up restricting orifice (7), and described hold-down segment (84) just goes out to offer to run through the radial through hole (85) of hold-down segment (84) to outlet flow (16),
Pressing plate via hole (81) comprises along hold-down segment to mounting end pressing plate first via hole (811), pressing plate second via hole (812) and the pressing plate the 3rd via hole (813) that diameter reduces successively successively, hole wall along pressing plate the 3rd via hole (813) also offers two groove seal grooves, and described 3rd seal element (11) is separately positioned in two seals groove.
7. high pressure large velocity ratio flow control valve according to claim 6, is characterized in that: described linear stepping motor (1) adopts through shaft type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510920518.1A CN105386894B (en) | 2015-12-10 | 2015-12-10 | A kind of high pressure large velocity ratio flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510920518.1A CN105386894B (en) | 2015-12-10 | 2015-12-10 | A kind of high pressure large velocity ratio flow control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105386894A true CN105386894A (en) | 2016-03-09 |
| CN105386894B CN105386894B (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510920518.1A Active CN105386894B (en) | 2015-12-10 | 2015-12-10 | A kind of high pressure large velocity ratio flow control valve |
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| CN (1) | CN105386894B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640423A (en) * | 2016-11-16 | 2017-05-10 | 上海空间推进研究所 | Flow resistance adjusting device of low-thrust liquid attitude control engine set |
| CN108225726A (en) * | 2017-12-27 | 2018-06-29 | 西安航天动力研究所 | A kind of liquid fluid system acoustics closed end inlet experiment boundary condition simulation device |
| CN110259968A (en) * | 2019-07-03 | 2019-09-20 | 河南林硕农业科技发展有限公司 | A kind of automatic hydrant |
| CN110594473A (en) * | 2019-10-08 | 2019-12-20 | 深圳市摩控自动化设备有限公司 | Flow control device and method for realizing stable operation of valve positioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5148674A (en) * | 1990-01-26 | 1992-09-22 | Morris Brian G | Method and apparatus for providing real-time control of a gaseous propellant rocket propulsion system |
| JPH1037804A (en) * | 1996-07-22 | 1998-02-13 | Ishikawajima Harima Heavy Ind Co Ltd | Cavitation venturi valve |
| CN203421231U (en) * | 2013-07-22 | 2014-02-05 | 中国航天科技集团公司第六研究院第十一研究所 | Ultra-low pressure constant pressure check valve |
| CN103953463A (en) * | 2014-05-06 | 2014-07-30 | 中国航天科技集团公司第六研究院第十一研究所 | Low flow resistance cone valve |
-
2015
- 2015-12-10 CN CN201510920518.1A patent/CN105386894B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5148674A (en) * | 1990-01-26 | 1992-09-22 | Morris Brian G | Method and apparatus for providing real-time control of a gaseous propellant rocket propulsion system |
| JPH1037804A (en) * | 1996-07-22 | 1998-02-13 | Ishikawajima Harima Heavy Ind Co Ltd | Cavitation venturi valve |
| CN203421231U (en) * | 2013-07-22 | 2014-02-05 | 中国航天科技集团公司第六研究院第十一研究所 | Ultra-low pressure constant pressure check valve |
| CN103953463A (en) * | 2014-05-06 | 2014-07-30 | 中国航天科技集团公司第六研究院第十一研究所 | Low flow resistance cone valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640423A (en) * | 2016-11-16 | 2017-05-10 | 上海空间推进研究所 | Flow resistance adjusting device of low-thrust liquid attitude control engine set |
| CN106640423B (en) * | 2016-11-16 | 2018-08-03 | 上海空间推进研究所 | The flow resistance regulating device of low thrust liquid attitude control engine unit |
| CN108225726A (en) * | 2017-12-27 | 2018-06-29 | 西安航天动力研究所 | A kind of liquid fluid system acoustics closed end inlet experiment boundary condition simulation device |
| CN110259968A (en) * | 2019-07-03 | 2019-09-20 | 河南林硕农业科技发展有限公司 | A kind of automatic hydrant |
| CN110594473A (en) * | 2019-10-08 | 2019-12-20 | 深圳市摩控自动化设备有限公司 | Flow control device and method for realizing stable operation of valve positioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105386894B (en) | 2017-06-13 |
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