CN101886647A - Servo water pressure control device - Google Patents
Servo water pressure control device Download PDFInfo
- Publication number
- CN101886647A CN101886647A CN 201010207236 CN201010207236A CN101886647A CN 101886647 A CN101886647 A CN 101886647A CN 201010207236 CN201010207236 CN 201010207236 CN 201010207236 A CN201010207236 A CN 201010207236A CN 101886647 A CN101886647 A CN 101886647A
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- servo
- water
- control device
- pressure
- pressure control
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Abstract
The invention discloses a servo water pressure control device, which can effectively solve the problem of low precision of the previous pressure maintaining valves and ensure stability of pressure control. The technical scheme thereof is as follow: the device comprises a servo hydraulic pump unit. The device is characterized in that the device also comprises an electro-hydraulic servo valve and a servo high-pressure oil-driving water device, wherein the servo hydraulic pump unit is connected with the electro-hydraulic servo valve which is connected with the servo high-pressure oil-driving water device; the servo high-pressure oil-driving water device is connected with an experimental container by a control module; and the electro-hydraulic servo valve and the control module are respectively connected with a control system in an electrical control method.
Description
Technical field
The present invention relates to the control gear technical field, be specially servo water pressure control device, it is mainly used in the pressure test to seal container.
Background technique
Usually when carrying out pressure test for a seal container,, adopt high-pressure water pump to pour into the high pressure tap water and test as rocket's fuel tanks is carried out pressure test, usually adopt the pressure maintaining valve pilot pressure, because the pressure maintaining valve poor sensitivity, precision is low, therefore has the problem of pressure control shakiness.
Summary of the invention
At the problems referred to above, the invention provides servo water pressure control device, it can effectively solve the low problem of pressure maintaining valve precision in the past, guarantees pressure controlled stability.
Its technological scheme is such, it comprises the servo-hydraulic pumping plant, it is characterized in that: it also comprises electrohydraulic control and servo high-pressure oil expelling water device, described servo-hydraulic pumping plant connects described electrohydraulic control, described electrohydraulic control connects described servo high-pressure oil expelling water device, described servo high-pressure oil expelling water device connects test chamber by control module, and described electrohydraulic control, control module electricly connect with control system respectively.
It is further characterized in that: described servo high-pressure oil expelling water device comprises hydraulic fluid chamber and water cavity; Described hydraulic fluid chamber and water cavity are separated by the piston on the piston rod; Described hydraulic fluid chamber and water cavity include symmetrical two; Described two hydraulic fluid chambers are positioned at the two ends of described servo high-pressure oil expelling water device; Described water cavity is positioned at the inboard of described hydraulic fluid chamber; Described electrohydraulic control connects described hydraulic fluid chamber by pipeline; Described water cavity connects inlet pipeline and described test chamber by one-way valve respectively; Between described water cavity and the described test chamber control module is installed also; Described control module comprises accumulator and pressure transducer.
Beneficial effect of the present invention is: it sends feedback pressure signal in real time by the pressure transducer on the control module and gives control system, is realized the precision of system pressure is controlled the control accuracy height by control system control servo-hydraulic valve.
Description of drawings
Fig. 1 is a servo water pressure control device system principle schematic representation of the present invention.
Embodiment
See Fig. 1, it comprises servo-hydraulic pumping plant 22, electrohydraulic control 15 and servo high-pressure oil expelling water device 16, servo-hydraulic pumping plant 22 connects electrohydraulic control 15, electrohydraulic control 15 connects servo high-pressure oil expelling water device 16, servo high-pressure oil expelling water device 16 connects test chamber 24 by control module 23, and electrohydraulic control 15, control module 23 electricly connect with control system respectively.Servo high-pressure oil expelling water device 16 comprises hydraulic fluid chamber and water cavity; Hydraulic fluid chamber and water cavity are separated by the piston on the piston rod 33 29; Hydraulic fluid chamber and water cavity include symmetrical two, left hydraulic fluid chamber 25, left water cavity 26, right water cavity 27, right hydraulic fluid chamber 28; The two ends of the servo high-pressure oil expelling water device 16 that two hydraulic fluid chambers 25,28 are positioned at; Water cavity 26,27 is positioned at the inboard of hydraulic fluid chamber 25,28; Electrohydraulic control 15 pipelines connect hydraulic fluid chamber 25,28; Water cavity 24,27 connects inlet pipeline, outlet valve 32 connection test chambers 24 by inlet valve 17 respectively; Between water cavity 26,27 and the test chamber 24 control module 23 is installed also; Control module 23 comprises accumulator 18 and pressure transducer 23.Among Fig. 1, the servo-hydraulic pumping plant comprises that fuel tank 30,1 is a level meter, 2 is temperature transducer, and 3 is liquid level sensor, and 4 is the hydraulic pressure air-strainer, 5 is the inlet port filter, and 6 is oil pump, and 7 is motor, 8 is the precision pressure in-line filter, and 9 is one-way valve, and 10 is safety valve, 11 is electromagnetic relief valve, and 12 is pressure transducer, and 13 is pressure meter switch, 14 is pressure gauge, and 21 is the direct returning type return filter.31 are tank from the beginning, and 20 is the switch water valve on the inlet pipeline.
Pressure oil is connected the hydraulic fluid chamber 25 of servo high-pressure oil expelling water device 16 by electrohydraulic control 15,28, utilize oil pressure to promote the piston rod side-to-side movement, tap water enters the water cavity 26 of servo high-pressure oil expelling water device through switch water valve 21 and inlet valve 17,27, when piston rod 33 moves right, water cavity 26 is split into press water and enters test chamber by outlet valve 32 outputs, when piston rod 33 during to left movement, water cavity 27 is split into press water by outlet valve 32 outputs, wherein hydraulic pressure is 1.64 with the hydraulic pressure ratio, press water enters test chamber through control module 23 after the stable and detected pressures, pressure transducer on the control module 23 sends feedback pressure signal in real time and gives control system, send instruction to electrohydraulic control 15 according to system's needs by control system, thereby by regulate electrohydraulic control 15 realize precision control to system pressure, its control accuracy can reach≤2%.
Claims (10)
1. servo water pressure control device, it comprises the servo-hydraulic pumping plant, it is characterized in that: it also comprises electrohydraulic control and servo high-pressure oil expelling water device, described servo-hydraulic pumping plant connects described electrohydraulic control, described electrohydraulic control connects described servo high-pressure oil expelling water device, described servo high-pressure oil expelling water device connects test chamber by control module, and described electrohydraulic control, control module electricly connect with control system respectively.
2. according to the described servo water pressure control device of claim 1, it is characterized in that: described servo high-pressure oil expelling water device comprises hydraulic fluid chamber and water cavity.
3. according to the described servo water pressure control device of claim 2, it is characterized in that: described hydraulic fluid chamber and water cavity are separated by the piston on the piston rod.
4. according to the described servo water pressure control device of claim 3, it is characterized in that: described hydraulic fluid chamber and water cavity include symmetrical two.
5. according to the described servo water pressure control device of claim 4, it is characterized in that: described two hydraulic fluid chambers are positioned at the two ends of described servo high-pressure oil expelling water device.
6. according to the described servo water pressure control device of claim 5, it is characterized in that: described water cavity is positioned at the inboard of described hydraulic fluid chamber.
7. according to claim 2 or 6 described servo water pressure control devices, it is characterized in that: described electrohydraulic control connects described hydraulic fluid chamber by pipeline.
8. according to the described servo water pressure control device of claim 7, it is characterized in that: described water cavity connects inlet pipeline and described test chamber by one-way valve respectively.
9. described according to Claim 8 servo water pressure control device is characterized in that: between described water cavity and the described test chamber control module is installed also.
10. according to the described servo water pressure control device of claim 9, it is characterized in that: described control module comprises accumulator and pressure transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102072364A CN101886647B (en) | 2010-06-20 | 2010-06-20 | Servo water pressure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102072364A CN101886647B (en) | 2010-06-20 | 2010-06-20 | Servo water pressure control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101886647A true CN101886647A (en) | 2010-11-17 |
| CN101886647B CN101886647B (en) | 2012-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102072364A Active CN101886647B (en) | 2010-06-20 | 2010-06-20 | Servo water pressure control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101886647B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189699A (en) * | 2011-03-30 | 2011-09-21 | 苏州安理高科安全设备开发有限公司 | Linkage system |
| CN103308125A (en) * | 2013-06-07 | 2013-09-18 | 中国人民解放军国防科学技术大学 | Pipeline flowing stabilization control method |
| WO2018040460A1 (en) * | 2016-08-31 | 2018-03-08 | 陈波 | Electric serving ultra-high-pressure system and operation principle thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2083741U (en) * | 1990-01-20 | 1991-08-28 | 山西矿业学院 | Dynamic property tester for hydraulic support safety valve |
| CN2139446Y (en) * | 1992-06-26 | 1993-08-04 | 郑德维 | Ultrahigh pressure disinfection equipment |
| CN1301958A (en) * | 1999-12-30 | 2001-07-04 | 中国地质大学（武汉） | Testing method and testing device for expansion pressure of soild expansion material |
| CN2646453Y (en) * | 2003-09-23 | 2004-10-06 | 郭晓松 | Hydraulic workbench |
| CN200998758Y (en) * | 2007-01-26 | 2008-01-02 | 周沛凝 | Volume ratio control hydraulic system for hydraulic reinforced bar bending hoop machine |
| CN101177806A (en) * | 2007-11-27 | 2008-05-14 | 浙江大学 | Driving means for combing machine nipper |
| CN201749375U (en) * | 2010-06-20 | 2011-02-16 | 无锡市海航电液伺服系统有限公司 | Servo hydraulic pressure control device |
-
2010
- 2010-06-20 CN CN2010102072364A patent/CN101886647B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2083741U (en) * | 1990-01-20 | 1991-08-28 | 山西矿业学院 | Dynamic property tester for hydraulic support safety valve |
| CN2139446Y (en) * | 1992-06-26 | 1993-08-04 | 郑德维 | Ultrahigh pressure disinfection equipment |
| CN1301958A (en) * | 1999-12-30 | 2001-07-04 | 中国地质大学（武汉） | Testing method and testing device for expansion pressure of soild expansion material |
| CN2646453Y (en) * | 2003-09-23 | 2004-10-06 | 郭晓松 | Hydraulic workbench |
| CN200998758Y (en) * | 2007-01-26 | 2008-01-02 | 周沛凝 | Volume ratio control hydraulic system for hydraulic reinforced bar bending hoop machine |
| CN101177806A (en) * | 2007-11-27 | 2008-05-14 | 浙江大学 | Driving means for combing machine nipper |
| CN201749375U (en) * | 2010-06-20 | 2011-02-16 | 无锡市海航电液伺服系统有限公司 | Servo hydraulic pressure control device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189699A (en) * | 2011-03-30 | 2011-09-21 | 苏州安理高科安全设备开发有限公司 | Linkage system |
| CN103308125A (en) * | 2013-06-07 | 2013-09-18 | 中国人民解放军国防科学技术大学 | Pipeline flowing stabilization control method |
| CN103308125B (en) * | 2013-06-07 | 2016-01-20 | 中国人民解放军国防科学技术大学 | A kind of Flows stable control method |
| WO2018040460A1 (en) * | 2016-08-31 | 2018-03-08 | 陈波 | Electric serving ultra-high-pressure system and operation principle thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101886647B (en) | 2012-07-04 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 214027 No. 11, A, 1899 Jianghai Road, New District, Jiangsu, Wuxi Applicant after: Wuxi Haihang Electrohydraulic Servo System Co., Ltd. Address before: 214027 No. 11, A, 1899 Jianghai Road, New District, Jiangsu, Wuxi Applicant before: Wuxi Haihang Electrohydraulic Servo System Co.,Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: WUXI HAIHANG ELECTRO-HYDRAULIC SERVO SYSTEM CO., LTD. TO: WUXI HAIHANG ELECTRO-HYDRAULIC SERVO SYSTEM CO, LTD. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 214101 No. 4, Chunlei Road, Xishan District, Wuxi City, Jiangsu Province Patentee after: WUXI HAIHANG ELECTRO-HYDRAULIC SERVO SYSTEM OF LIMITED BY SHARE LTD. Address before: 214027 No. 11, A, 1899 Jianghai Road, New District, Jiangsu, Wuxi Patentee before: WUXI HAIHANG ELECTRO-HYDRAULIC SERVO SYSTEM OF LIMITED BY SHARE LTD. |