CN202883531U - Underwater pressure compensation structure of hydraulic servo valve - Google Patents
Underwater pressure compensation structure of hydraulic servo valve Download PDFInfo
- Publication number
- CN202883531U CN202883531U CN 201220577428 CN201220577428U CN202883531U CN 202883531 U CN202883531 U CN 202883531U CN 201220577428 CN201220577428 CN 201220577428 CN 201220577428 U CN201220577428 U CN 201220577428U CN 202883531 U CN202883531 U CN 202883531U
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- CN
- China
- Prior art keywords
- filter screen
- pressure compensation
- servovalve
- servo valve
- cover plate
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model belongs to the field of electric hydraulic control engineering, and particularly relates to an underwater pressure compensation structure of a hydraulic servo valve. A filter compensator which enables the pressure inside a servo valve shell and the pressure outside the servo valve shell to keep consistent is installed on the servo valve, a pressure compensation hole is formed in the filter compensator, and a filter screen which is used for filtering fluid which enters into the servo valve shell is installed inside the pressure compensation hole. The filter compensator comprises a filter screen cover plate, the filter screen and a filter screen seat. One end of the filter screen seat is installed inside a mounting hole which is formed in a sealing end cover of the servo valve, and the other end of the filter screen seat is connected with the filter screen cover plate. The filter screen is compressed tightly on a step on the inner side of the filter screen seat through the filter screen cover plate. The filter screen cover plate and the filter screen seat are both provided with the pressure compensation holes. The underwater pressure compensation structure of the hydraulic servo valve solves the problem that an electro-hydraulic servo valve can not work in the environments of deep sea and high pressure, and has the advantages of being compact in structure, reliable in performance, low in failure rate and cost, easy to implement and the like.
Description
Technical field
The utility model belongs to the electrichydraulic control engineering field, specifically a kind of underwater hydraulic servovalve pressure compensation structure.
Background technique
At present, in fields such as marine oil and gas exploration and developments, most underwater operations have that pressure is high, and load heavily waits characteristics, and it is strong that hydraulic driving has load capacity, load/high from anharmonic ratio, can realize the advantage such as the dark operation in full sea by pressure compensator.During hydraulic system forms, the key of hydraulic efficiency servo-valve is hydraulic control, but the current servo valve is in order to guarantee the cleaning of internal environment, majority forms sealed compartment with metal shell, torque motor is sealed, because the cavity structure of sealed compartment, cause in the situation that bear outer high pressure structural strength and seal unreliable.Because the continuous lifting of job requirements under the hyperbaric environment, developing can be stable at the hyperbaric environment performance, and the servovalve of compact structure has become problem demanding prompt solution.
The model utility content
The purpose of this utility model is to provide a kind of underwater hydraulic servovalve pressure compensation structure that can use in the dark hyperbaric environment in full sea, can be applicable to the HYDRAULIC CONTROL SYSTEM of the hyperbaric environments such as deep-sea.
The purpose of this utility model is achieved through the following technical solutions:
The utility model is at servovalve the filtration compensator that servovalve housing external and internal pressure is consistent to be installed, have pressure compensation holes on the described filtration compensator, the filter screen that filters entering servovalve enclosure interior fluid is installed in this pressure compensation holes.
Wherein: described filtration compensator comprises filter screen cover plate, filter screen and filter screen pedestal, wherein an end of filter screen pedestal is installed in the mounting hole of offering on the end cover of servovalve, the other end is connected with described filter screen cover plate, and described filter screen is pressed on the step of filter screen pedestal inboard by the filter screen cover plate; All have pressure compensation holes on described filter screen cover plate and the filter screen pedestal; The centre of described filter screen pedestal is provided with pressure compensation holes vertically, and hole wall is provided with described step; The outer surface of described filter screen pedestal is provided with the seam that is located by connecting with described mounting hole; Described filter screen pedestal and mounting hole are interference fit; The lower surface of described filter screen cover plate is inserted in the extension part in the filter screen pedestal upward pressure compensate opening to downward-extension, formation, and the outer surface of this extension part is respectively equipped with vertically the seam that is located by connecting with the filter screen pedestal the other end and is fixed described filter screen seam; The centre of described extension part is provided with pressure compensation holes vertically; Pressure compensation holes on described extension part and the filter screen pedestal is interference fit.
Advantage of the present utility model and good effect are:
1. high pressure resistant: the utility model adopts the pressure compensation principle, at the end cover of servovalve the filtration compensator has been installed, guaranteed that servovalve housing external and internal pressure is consistent, greatly promoted the external pressure ability that servovalve can bear, servovalve can be applied in the hyperbaric environment.
2, stable performance: the utility model adopts the pressure compensation principle, guaranteed that servovalve housing external and internal pressure is consistent, avoided because the serious consequence that the situations such as the caused servovalve housing distortion of outer hyperbaric environment, seal failure are brought has higher reliability.
2. compact structure: the utility model adopts the pressure compensation principle, guaranteed that servovalve housing external and internal pressure is consistent, shell construction in hyperbaric environment collapsing force and normal pressure under basically identical, therefore need not to increase the thickness of servovalve housing, even can do thinlyyer, guaranteed the compact overall structure of servovalve.
3. cost is low, easily realize: the utility model incorporates pressure compensation thought in existing servo valve technology, and only needing increases filter screen and corresponding positioning element, need not the internal structure of servovalve is done any change, this kind structure easily realizes, reduces cost when guaranteeing the servovalve stable performance.
Description of drawings
Fig. 1 is structural front view of the present utility model;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is the partial enlarged drawing at A place among Fig. 1;
Wherein: 1 is servovalve, and 11 is end cover, and 2 for filtering compensator, and 21 is the filter screen cover plate, and 22 is filter screen, and 23 is the filter screen pedestal, and 24 is pressure compensation holes.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Shown in Fig. 1～3, the utility model comprises servovalve 1 and filtration compensator 2, and wherein the end cover 11 at servovalve 1 has mounting hole, and the filtration compensator 2 that servovalve housing external and internal pressure is consistent is installed in the mounting hole; Have pressure compensation holes 24 on this filtration compensator 2, be used for UNICOM's servovalve external and internal pressure, guarantee that the servovalve inside and outside differential pressure is zero, eliminate the pressure that bears when the servovalve housing uses in hyperbaric environment, avoided punishing severely consequence owing to what the situations such as the caused servovalve housing distortion of outer hyperbaric environment, seal failure were brought; The filter screen 22 that filters entering servovalve enclosure interior fluid is installed in this pressure compensation holes 24.
The utility model adopts the pressure compensation principle, with underwater hydraulic servovalve housing internal and external environment UNICOM, keeps external and internal pressure consistent by pressure compensation holes; Simultaneously install filter screen additional at the pressure compensation holes place, guarantee that the internal environment of underwater hydraulic servovalve is not by outside contamination.The utility model can be applied to hydraulic oil, in the air ambient, the shell external and internal pressure that has guaranteed servovalve by the pressure compensation principle is consistent, solved servovalve shell construction intensity and the sealing problem in the hyperbaric environment, and solved the problem that current electrohydraulic control can not be worked in deep-sea high-pressure environment.
Claims (6)
1. underwater hydraulic servovalve pressure compensation structure, it is characterized in that: the filtration compensator (2) that servovalve housing external and internal pressure is consistent is installed at servovalve (1), have pressure compensation holes (24) on the described filtration compensator (2), the filter screen (22) that filters entering servovalve enclosure interior fluid is installed in this pressure compensation holes (24).
2. by underwater hydraulic servovalve pressure compensation structure claimed in claim 1, it is characterized in that: described filtration compensator (2) comprises filter screen cover plate (21), filter screen (22) and filter screen pedestal (23), wherein an end of filter screen pedestal (23) is installed in the mounting hole of offering on the end cover (11) of servovalve (1), the other end is connected with described filter screen cover plate (21), and described filter screen (22) is pressed on the inboard step of filter screen pedestal (23) by filter screen cover plate (21); All have pressure compensation holes (24) on described filter screen cover plate (21) and the filter screen pedestal (23).
3. by underwater hydraulic servovalve pressure compensation structure claimed in claim 2, it is characterized in that: the centre of described filter screen pedestal (23) is provided with pressure compensation holes (24) vertically, and hole wall is provided with described step; The outer surface of described filter screen pedestal (23) is provided with the seam that is located by connecting with described mounting hole.
4. by claim 2 or 3 described underwater hydraulic servovalve pressure compensation structures, it is characterized in that: described filter screen pedestal (23) is interference fit with mounting hole.
5. by underwater hydraulic servovalve pressure compensation structure claimed in claim 2, it is characterized in that: the lower surface of described filter screen cover plate (21) is inserted in the extension part in filter screen pedestal (23) the upward pressure compensate opening to downward-extension, formation, and the outer surface of this extension part is respectively equipped with vertically the seam that is located by connecting with filter screen pedestal (23) the other end and is fixed described filter screen (22) seam; The centre of described extension part is provided with pressure compensation holes (24) vertically.
6. by underwater hydraulic servovalve pressure compensation structure claimed in claim 5, it is characterized in that: the pressure compensation holes on described extension part and the filter screen pedestal (23) is interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220577428 CN202883531U (en) | 2012-11-05 | 2012-11-05 | Underwater pressure compensation structure of hydraulic servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220577428 CN202883531U (en) | 2012-11-05 | 2012-11-05 | Underwater pressure compensation structure of hydraulic servo valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883531U true CN202883531U (en) | 2013-04-17 |
Family
ID=48074964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220577428 Expired - Fee Related CN202883531U (en) | 2012-11-05 | 2012-11-05 | Underwater pressure compensation structure of hydraulic servo valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883531U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103721491A (en) * | 2013-12-13 | 2014-04-16 | 合肥江航飞机装备有限公司 | Necking device for molecular sieve bed end cover |
| CN103790880A (en) * | 2012-11-05 | 2014-05-14 | 中国科学院沈阳自动化研究所 | Underwater hydraulic servo valve pressure compensation structure |
-
2012
- 2012-11-05 CN CN 201220577428 patent/CN202883531U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790880A (en) * | 2012-11-05 | 2014-05-14 | 中国科学院沈阳自动化研究所 | Underwater hydraulic servo valve pressure compensation structure |
| CN103790880B (en) * | 2012-11-05 | 2016-04-13 | 中国科学院沈阳自动化研究所 | A kind of underwater hydraulic servovalve pressure compensation structure |
| CN103721491A (en) * | 2013-12-13 | 2014-04-16 | 合肥江航飞机装备有限公司 | Necking device for molecular sieve bed end cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20171105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |