CN101886647B - Servo water pressure control device - Google Patents
Servo water pressure control device Download PDFInfo
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- CN101886647B CN101886647B CN2010102072364A CN201010207236A CN101886647B CN 101886647 B CN101886647 B CN 101886647B CN 2010102072364 A CN2010102072364 A CN 2010102072364A CN 201010207236 A CN201010207236 A CN 201010207236A CN 101886647 B CN101886647 B CN 101886647B
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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 unstable problem of pressure control.
Summary of the invention
To 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, and said servo-hydraulic pumping plant connects said electrohydraulic control, and said electrohydraulic control connects said servo high-pressure oil expelling water device; Said servo high-pressure oil expelling water device connects test chamber through control module, and said electrohydraulic control, control module electricly connect with control system respectively.
It is further characterized in that: said servo high-pressure oil expelling water device comprises hydraulic fluid chamber and water cavity; Said hydraulic fluid chamber and water cavity are separated through the piston on the piston rod; Said hydraulic fluid chamber and water cavity include symmetrical two; The two ends of the said servo high-pressure oil expelling water device that said two hydraulic fluid chambers are positioned at; Said water cavity is positioned at the inboard of said hydraulic fluid chamber; Said electrohydraulic control pipeline connects said hydraulic fluid chamber; Said water cavity connects inlet pipeline and said test chamber through one-way valve respectively; Between said water cavity and the said test chamber control module is installed also; Said control module comprises accumulator and pressure transducer.
Beneficial effect of the present invention is: it sends feedback pressure signal in real time through the pressure transducer on the control module and gives control system, realizes the precision control to system pressure by control system control servo-hydraulic valve, and control accuracy is high.
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, and servo high-pressure oil expelling water device 16 connects test chamber 24 through 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 through the piston on the piston rod; 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 connection test chamber 24 through 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, and 2 is temperature transducer, and 3 is liquid level sensor; 4 is the hydraulic pressure air-strainer, and 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, and 11 is electromagnetic relief valve; 12 is pressure transducer, and 13 is pressure meter switch, and 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 25,28 of servo high-pressure oil expelling water device 16 through electrohydraulic control 15; Utilize oil pressure to promote the piston rod side-to-side movement; Tap water is through the water cavity 26,27 of switch water valve 20 with inlet valve 17 entering servo high-pressure oil expelling water devices, and when piston rod moved right, water cavity 26 was split into press water and gets into test chamber through outlet valve output; When piston rod during to left movement; Water cavity 27 is split into press water through outlet valve output, and wherein hydraulic pressure is 1.64 with the hydraulic pressure ratio, press water through control module 23 stable with detected pressures after get into test chamber; Pressure transducer on the control module 23 sends feedback pressure signal in real time and gives control system; To send instruction according to system's needs by control system and give electrohydraulic control 15, thereby realize precision control system pressure through regulating electrohydraulic control 15, its control accuracy can reach≤and 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, and said servo-hydraulic pumping plant connects said electrohydraulic control, and said electrohydraulic control connects said servo high-pressure oil expelling water device; Said servo high-pressure oil expelling water device connects test chamber through control module, and said electrohydraulic control, control module electricly connect with control system respectively.
2. according to the said servo water pressure control device of claim 1, it is characterized in that: said servo high-pressure oil expelling water device comprises hydraulic fluid chamber and water cavity.
3. according to the said servo water pressure control device of claim 2, it is characterized in that: said hydraulic fluid chamber and water cavity are separated through the piston on the piston rod.
4. according to the said servo water pressure control device of claim 3, it is characterized in that: said hydraulic fluid chamber and water cavity include symmetrical two.
5. according to the said servo water pressure control device of claim 4, it is characterized in that: said two hydraulic fluid chambers are positioned at the two ends of said servo high-pressure oil expelling water device.
6. according to the said servo water pressure control device of claim 5, it is characterized in that: said water cavity is positioned at the inboard of said hydraulic fluid chamber.
7. according to claim 2 or 6 said servo water pressure control devices, it is characterized in that: said electrohydraulic control connects said hydraulic fluid chamber through pipeline.
8. according to the said servo water pressure control device of claim 7, it is characterized in that: said water cavity connects inlet pipeline and said test chamber through one-way valve respectively.
9. said according to Claim 8 servo water pressure control device is characterized in that: between said water cavity and the said test chamber said control module is installed.
10. according to the said servo water pressure control device of claim 9, it is characterized in that: said 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 CN101886647A (en) | 2010-11-17 |
| CN101886647B true CN101886647B (en) | 2012-07-04 |
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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 |
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| CN (1) | CN101886647B (en) |
Families Citing this family (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 |
| 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 |
| CN106224332A (en) * | 2016-08-31 | 2016-12-14 | 南京大地水刀股份有限公司 | A kind of electricity servo extra high voltage system and operating 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 | Extra-high-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 | Extra-high-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 |
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| CN101886647A (en) | 2010-11-17 |
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| C06 | Publication | ||
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| 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. |