CN102996873B - Driving type decompression valve capable of automatically adjusting high-accuracy stepping motor - Google Patents
Driving type decompression valve capable of automatically adjusting high-accuracy stepping motor Download PDFInfo
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- CN102996873B CN102996873B CN201110265510.8A CN201110265510A CN102996873B CN 102996873 B CN102996873 B CN 102996873B CN 201110265510 A CN201110265510 A CN 201110265510A CN 102996873 B CN102996873 B CN 102996873B
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- stepping motor
- shell body
- spool
- hole
- lower shell
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Electrically Driven Valve-Operating Means (AREA)
- Fuel Cell (AREA)
Abstract
The invention relates to the technical field of decompression valves of a fuel cell power generation system and further discloses a driving type decompression valve capable of automatically adjusting a high-accuracy stepping motor. The stepping motor is fixed at the upper end of an upper casing in the driving type decompression valve, a stepping motor shaft on the stepping motor extends into the upper casing and connected with a spring device in the upper casing, an air outlet through hole and an air inlet through hole are arranged on a lower casing, a valve core and an auxiliary spring at the lower end of the valve core are sequentially arranged at the center of the lower casing, the air outlet through hole and the air inlet through hole are separated through a sealing pad and a valve core, the upper casing fixedly presses a membrane on the lower casing, and the spring device on the upper casing can push the valve core to move vertically through the membrane. By automatically adjusting and controlling on pressure of the decompression valve through the stepping motor, stability of the pressure can be maintained, and the decompression valve is low in power consumption and high in working reliability. Simultaneously, a solenoid valve can be prevented from being opened, and safety and reliability of the fuel cell battery generation system are improved by impact to batteries due to instant saber generated by air passing through the decompression valve.
Description
Technical field
The invention belongs to fuel cell generation reduction valve technical field, be specifically related to a kind of highi degree of accuracy stepping motor driving type reduction valve that automatically regulates.
Background technique
In fuel cell generation, the pressure stability of fuel battery inside regulates, for having great importance in performance and the working life of battery.Pressure stability, start battery process are hit little, and the life-span of battery is long; Otherwise pressure surge is large, battery life is short, even causes breaking of PEM, damages greatly.
Hybrid linear stepper motor is the control unit that electrical pulsing signal is changed into straight-line displacement.When step actuator receives a pulse signal, it rotates a fixing angle with regard to the rotor of Driving Stepping Motor by the direction of setting, at internal rotor, there is a threaded accurate nut to coordinate with screw rod, rotatablely move like this and just can be converted into straight line motion at motor internal, thereby make total small and exquisite, reliable, there is the feature of At High Resolution, have a wide range of applications in accurate positioning field.
In fuel cell generation, reduction valve generally adopts traditional structural type now, and system is adjusted to system demand pressure by reduction valve before starting.System starts moment, and solenoid valve is opened, and gas is through reduction valve, there is instantaneous sharp cutting edge of a knife or a sword in pressure, battery is caused to certain impact, affect the working life of battery, simultaneously, due in system running, along with the variation of gas flow, bleed pressure, the pressure of inside battery also can correspondingly be affected, if regulated not in time, can have a strong impact on the performance index of battery, reduce the safety and reliability of fuel cell generation.
Summary of the invention
The object of the present invention is to provide a kind of highi degree of accuracy stepping motor driving type reduction valve that automatically regulates, can accurately automatically regulate the aperture of reduction valve, realize the problem of accurately controlling downstream pressure.
Technological scheme of the present invention is as follows: a kind of highi degree of accuracy stepping motor driving type reduction valve that automatically regulates, comprise that stepping is electronic, upper shell, spool and lower shell body, wherein, upper shell upper end is fixed with stepper motor, and the step motor shaft on stepper motor extend in upper shell, and be connected with the spring assembly in upper shell, lower shell body both sides have out vent hole and air inlet through hole, and lower shell body center is provided with the auxiliary spring of spool and spool lower end successively, edge, spool upper end is annular flange flange structure, center is elongate cylinder bar structure, the elongate cylinder rod of spool upper end stretches out outside the Gask-O-Seal and ring sealing base being arranged in lower shell body, and fit with flexible diaphragm, annular flange flange structure on spool and sealing gasket laminating, the air inlet through hole of seal isolation lower shell body and go out vent hole, and spool moves down while leaving with sealing gasket, be communicated with air inlet through hole and go out vent hole, upper shell is pressed abd fixed on diaphragm on lower shell body, and the spring assembly on guarantee upper shell can promote spool by diaphragm and move up and down.
Described lower shell body upper end vertically has the first ladder Column groove, and lower shell body lower end vertically has the second ladder Column groove, and lower shell body lower end one side level has the air inlet through hole being connected with the second ladder Column groove, and is fixedly connected with gas inlet; Lower shell body lower end opposite side has the vent hole that goes out being connected with the first ladder Column groove, and is fixedly connected with gas outlet.
Described sealing gasket circle structure, it is positioned over stupefied the going up of ladder in lower shell body the second ladder Column groove, and is fixed by the sealing seat of circle structure.
Spring assembly in described upper shell comprises upper spring seat, main spring and lower spring cup, wherein lower spring cup is placed on diaphragm, and upper spring seat is cap-like structure, and groove and the step motor shaft at its center match, and step motor shaft to the promotion of upper spring seat under, compression main spring.
Centered by described upper shell, have the ladder cylindrical structure of cylindrical body through hole.
Remarkable result of the present invention is: a kind of automatic adjusting highi degree of accuracy stepping motor driving type reduction valve of the present invention is the auto-adjustment control to reduction valve pressure by stepper motor, can keep the stable of pressure, and low in energy consumption, and functional reliability is high; Meanwhile, can avoid solenoid valve to open, the impact of the instantaneous sharp cutting edge of a knife or a sword that gas produces when the reduction valve to battery, has improved the safety and reliability of fuel cell generation.
Brief description of the drawings
Fig. 1 is that one shown in the present regulates highi degree of accuracy stepping motor driving type structure of relief pressure valve schematic diagram automatically;
In figure: 1, stepper motor; 2, step motor shaft; 3, upper spring seat; 4, main spring; 5, diaphragm; 6, spool; 7 gas outlets; 8, auxiliary spring; 9, lower shell body; 10, gas inlet; 11, upper shell; 12, sealing seat; 13, sealing gasket; 14, lower spring cup.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figure 1, a kind of highi degree of accuracy stepping motor driving type reduction valve that automatically regulates, comprise stepper motor 1, upper shell 11, spool 6 and lower shell body 9, wherein, centered by upper shell 11, have the ladder cylindrical structure of cylindrical body through hole, stepper motor 1 is fixed on upper shell 11, and the step motor shaft 2 on stepper motor 1 extend in the cylindrical body through hole of upper shell 11, lower shell body 9 upper ends vertically have the first ladder Column groove, lower shell body 9 lower ends vertically have the second ladder Column groove, and lower shell body 9 lower end one side levels have the air inlet through hole being connected with the second ladder Column groove, and be fixedly connected with gas inlet 10, lower shell body 9 lower end opposite sides have the vent hole that goes out being connected with the first ladder Column groove, and are fixedly connected with gas outlet 7, in the second ladder Column groove of lower shell body 9, auxiliary spring 8, spool 6, sealing gasket 13 and sealing seat 12 are installed successively, wherein, circular sealing gasket 13 be placed on ladder in lower shell body 9 second ladder Column grooves stupefied on, and be fixed by circular sealing seat 12, spool 6 entirety are club shaped structure, its upper end is edge annular flange flange, the elongate cylinder bar structure outside sealing gasket 13 and sealing seat 12 is stretched out at center, spool 6 lower ends, under the promotion of the auxiliary spring 8 of compression, are closely fitted in the flange of spool 6 upper ends on sealing gasket 13, on the ladder of lower shell body 9 first ladder Column grooves is stupefied, be placed with diaphragm 5, upper shell 11 is fixedly connected with lower shell body 9, diaphragm 5 is fixed, and the lower end of diaphragm 5 contacts with the elongate cylinder rod of spool 6 upper ends, in the cylinder body cavity that diaphragm 5 and upper shell 11 centered cylinder through holes form, upper spring seat 3 is installed successively, main spring 4 and lower spring cup 14, and lower spring cup 14 is positioned on diaphragm 5, upper spring seat 3 is cap-like structure, the groove at its center and step motor shaft 2 match, and step motor shaft 2 to the promotion of upper spring seat 3 under, compression main spring 4.
A kind of specific works process that automatically regulates highi degree of accuracy stepping motor driving type reduction valve of the present invention is: after system starts, stepper motor 1 reception control signal, drive step motor shaft 2 move up and down or move up, in the time that step motor shaft 2 moves down, promoting upper spring seat 3 moves down and compresses main spring 4, main spring 4 acts on diaphragm 5 by lower spring cup 14, and the spool 6 promoting below diaphragm 5 moves downward, the annular flange flange of spool 6 is separated from sealing gasket 13 gradually, valve opening increases, and gas outlet 7 pressure raise gradually; In the time that step motor shaft 2 moves upward, main spring 4 decrements are less, by lower spring cup 14 and diaphragm 5, spool 6 applied pressures reduced, spool 6 moves upward under the effect of lower end auxiliary spring 8, and contact with sealing gasket gradually, valve opening is less, and gas outlet 7 pressure reduce gradually.
Claims (5)
1. one kind regulates highi degree of accuracy stepping motor driving type reduction valve automatically, it is characterized in that: comprise stepper motor (1), upper shell (11), spool (6) and lower shell body (9), wherein, upper shell (11) upper end is fixed with stepper motor (1), and the step motor shaft (2) on stepper motor (1) extend in upper shell (11), and be connected with the spring assembly in upper shell (11), lower shell body (9) both sides have out vent hole and air inlet through hole, and lower shell body (9) center is provided with the auxiliary spring (8) of spool (6) and spool (6) lower end successively, spool (6) edge, upper end is annular flange flange structure, center is elongate cylinder bar structure, the elongate cylinder rod of spool (6) upper end stretches out outside the Gask-O-Seal (12) and ring sealing base (12) being arranged in lower shell body (9), and fit with flexible diaphragm (5), annular flange flange structure on spool (6) and sealing gasket (13) laminating, the air inlet through hole of seal isolation lower shell body (9) and go out vent hole, and spool (6) moves down while leaving with sealing gasket (12), be communicated with air inlet through hole and go out vent hole, upper shell (11) is pressed abd fixed on diaphragm (5) on lower shell body (9), and ensure that the spring assembly on upper shell (11) moves up and down by diaphragm (5) promotion spool (6).
2. one according to claim 1 regulates highi degree of accuracy stepping motor driving type reduction valve automatically, it is characterized in that: described lower shell body (9) upper end vertically has the first ladder Column groove, lower shell body (9) lower end vertically has the second ladder Column groove, and lower shell body (9) lower end one side level has the air inlet through hole being connected with the second ladder Column groove, and is fixedly connected with gas inlet (10); Lower shell body (9) lower end opposite side has the vent hole that goes out being connected with the first ladder Column groove, and is fixedly connected with gas outlet (7).
3. one according to claim 1 regulates highi degree of accuracy stepping motor driving type reduction valve automatically, it is characterized in that: described sealing gasket (13) circle structure, it is positioned over stupefied the going up of ladder in lower shell body (9) second ladder Column grooves, and is fixed by the sealing seat (12) of circle structure.
4. one according to claim 1 regulates highi degree of accuracy stepping motor driving type reduction valve automatically, it is characterized in that: the spring assembly in described upper shell (11) comprises upper spring seat (3), main spring (4) and lower spring cup (14), wherein lower spring cup (14) is placed on diaphragm (5), upper spring seat (3) is cap-like structure, the groove at its center and step motor shaft (2) match, and step motor shaft (2) to the promotion of upper spring seat (3) under, compression main spring (4).
5. one according to claim 1 regulates highi degree of accuracy stepping motor driving type reduction valve automatically, it is characterized in that: the ladder cylindrical structure that has cylindrical body through hole centered by described upper shell (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110265510.8A CN102996873B (en) | 2011-09-08 | 2011-09-08 | Driving type decompression valve capable of automatically adjusting high-accuracy stepping motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110265510.8A CN102996873B (en) | 2011-09-08 | 2011-09-08 | Driving type decompression valve capable of automatically adjusting high-accuracy stepping motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102996873A CN102996873A (en) | 2013-03-27 |
| CN102996873B true CN102996873B (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110265510.8A Active CN102996873B (en) | 2011-09-08 | 2011-09-08 | Driving type decompression valve capable of automatically adjusting high-accuracy stepping motor |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626933B (en) * | 2014-11-14 | 2018-05-18 | 北京临近空间飞行器系统工程研究所 | A kind of electromagnetism locking pressure reducing valve |
| CN104454739B (en) * | 2014-12-26 | 2016-09-14 | 东莞光洋信息科技有限公司 | Central hydraulic pump and pressure regulation reversal valve thereof |
| CN104847948A (en) * | 2015-05-07 | 2015-08-19 | 北京航空航天大学 | High-precision automatic control pressure reducer |
| CN111022736B (en) * | 2019-12-20 | 2022-04-22 | 广州朗达电子设备有限公司 | Evaporating pressure regulating valve capable of electrically regulating pressure |
| CN113653840B (en) * | 2021-07-27 | 2023-09-26 | 上海空间推进研究所 | Automatic auxiliary debugging device for pressure reducing valve, operation method and pressure reducing valve device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2443205Y (en) * | 2000-09-22 | 2001-08-15 | 北京世纪富原燃料电池有限公司 | Gas miniature pressure reducing valve |
| CN1553066A (en) * | 2003-12-18 | 2004-12-08 | 武汉理工大学 | Universal intelligent buffer gas pressure reducing valves |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001041244A1 (en) * | 1999-11-29 | 2001-06-07 | Matsushita Electric Industrial Co., Ltd. | Fuel cell system and method of operating the same |
| JP4939556B2 (en) * | 2009-02-03 | 2012-05-30 | 本田技研工業株式会社 | Fuel cell system |
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- 2011-09-08 CN CN201110265510.8A patent/CN102996873B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2443205Y (en) * | 2000-09-22 | 2001-08-15 | 北京世纪富原燃料电池有限公司 | Gas miniature pressure reducing valve |
| CN1553066A (en) * | 2003-12-18 | 2004-12-08 | 武汉理工大学 | Universal intelligent buffer gas pressure reducing valves |
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| CN102996873A (en) | 2013-03-27 |
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