CN112856012A - High-temperature and high-pressure resistant electro-hydraulic servo valve oil return cooling upper cover structure - Google Patents
High-temperature and high-pressure resistant electro-hydraulic servo valve oil return cooling upper cover structure Download PDFInfo
- Publication number
- CN112856012A CN112856012A CN202011604975.7A CN202011604975A CN112856012A CN 112856012 A CN112856012 A CN 112856012A CN 202011604975 A CN202011604975 A CN 202011604975A CN 112856012 A CN112856012 A CN 112856012A
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- CN
- China
- Prior art keywords
- servo valve
- hydraulic servo
- cover body
- heat insulation
- upper cover
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Classifications
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/12—Covers for housings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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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
- F16K49/00—Means in or on valves for heating or cooling
- F16K49/005—Circulation means for a separate heat transfer fluid
- F16K49/007—Circulation means for a separate heat transfer fluid located within the obturating element
Abstract
The invention discloses a high-temperature and high-pressure resistant electro-hydraulic servo valve oil return cooling upper cover structure. The heat insulation cover comprises a cover body (1), heat insulation pipelines (2) are distributed in the side wall and the top wall of the cover body (1), and heat conduction media capable of flowing are communicated in the heat insulation pipelines (2). The invention has the characteristics of good heat insulation effect, small volume and light weight.
Description
Technical Field
The invention belongs to the technical field of mechanical hydraulic pressure, and relates to a high-temperature and high-pressure resistant oil return cooling upper cover structure of an electro-hydraulic servo valve.
Background
An electro-hydraulic servo valve (a torque motor) is used as a precise and complex hydraulic servo control core element and is widely applied to the field of aerospace engines. The temperature at the nozzle of the engine is high, and long-term operation can cause heat to be transferred to the electro-hydraulic servo valve, so that the electromagnetic performance of a front-stage part of the electro-hydraulic servo valve is influenced, the output performance of the electro-hydraulic servo valve is changed, and the operation of the engine is abnormal. The existing cooling system mainly covers a heat shield outside a cover body to realize the thermal isolation of the torque motor from the external environment. However, the structure is relatively large and heavy, and is gradually incompatible with the requirements of the aeroengine system on structure and weight.
Disclosure of Invention
The purpose of the invention is: provides an oil return cooling upper cover structure of an electro-hydraulic servo valve with high temperature and high pressure resistance. The invention has the characteristics of good heat insulation effect, small volume and light weight.
The technical scheme of the invention is as follows: an oil return cooling upper cover structure of a high-temperature and high-pressure resistant electro-hydraulic servo valve comprises a cover body, wherein heat insulation pipelines are distributed in the side wall and the top wall of the cover body, and a heat conduction medium capable of flowing is communicated in the heat insulation pipelines.
In the above oil-return cooling upper cover structure of the high-temperature and high-pressure resistant electro-hydraulic servo valve, the heat insulation pipeline is in an S-shaped structure which is sequentially communicated with one another and covers the side wall and the top wall of the cover body.
In the oil return cooling upper cover structure of the high-temperature and high-pressure resistant electro-hydraulic servo valve, more than one heat insulation pipeline is distributed in the side wall and the top wall.
In the oil return cooling upper cover structure of the high-temperature and high-pressure resistant electro-hydraulic servo valve, an oil inlet cavity and an oil outlet cavity are also respectively arranged in the side wall; the oil inlets of the heat insulation pipelines are communicated with the oil inlet cavity, and the oil outlets of the heat insulation pipelines are communicated with the oil outlet cavity.
In the oil return cooling upper cover structure of the high-temperature and high-pressure resistant electro-hydraulic servo valve, the end face of the cover body is provided with the sealing ring I.
In the oil return cooling upper cover structure of the high-temperature and high-pressure resistant electro-hydraulic servo valve, the oil inlets of the oil inlet cavity and the oil outlet cavity are provided with the sealing rings II.
In the above oil-return cooling upper cover structure of the high-temperature and high-pressure resistant electro-hydraulic servo valve, the ratio of the diameter of the cross section of the heat insulation pipeline to the wall thickness of the cover body is 1: 6-8.
In the oil return cooling upper cover structure of the high-temperature and high-pressure resistant electro-hydraulic servo valve, a distance from an axis of the heat insulation pipeline in the side wall of the cover body to the inner side wall of the cover body is greater than a distance from the axis to the outer side wall of the cover body.
In the oil return cooling upper cover structure of the high-temperature and high-pressure resistant electro-hydraulic servo valve, the distance from the axis of the heat insulation pipeline positioned in the top wall of the cover body to the inner top wall of the cover body is greater than the distance from the axis to the outer top wall of the cover body.
In the oil return cooling upper cover structure of the high-temperature and high-pressure resistant electro-hydraulic servo valve, the heat-conducting medium is hydraulic oil.
The invention has the advantages that: the heat insulation pipelines are distributed in the side wall and the top wall of the existing upper cover body, and heat conducting media capable of flowing are communicated in the heat insulation pipelines; the heat on the surface of the upper cover is taken away by introducing the heat-conducting medium into the upper cover, so that the electro-hydraulic servo valve is isolated from an external high-temperature environment, the environmental temperature of a front stage of the electro-hydraulic servo valve (a torque motor) is reduced, the front stage of the electro-hydraulic servo valve is protected, the electro-hydraulic servo valve is prevented from working in an extreme high-temperature environment, and the output performance of the electro-hydraulic servo valve is further ensured. In addition, through the mode of setting up heat insulation pipeline in current upper cover lateral wall and top, guarantee under the unchangeable condition of original volume, alleviateed the weight of upper cover greatly, increased heat radiating area, not only taken away the environmental heat and protected the torque motor, solved moreover because of the system suppress the risk that leads to the upper cover to break and bring, improved upper cover compressive strength.
In conclusion, the cover body of the invention effectively reduces the weight of a product (compared with the weight of the traditional cover body, the weight of the cover body can be reduced by more than 50 percent), reduces the temperature of the front stage of the electro-hydraulic servo valve, can resist high-pressure risks caused by system faults, and improves the safety of the servo valve in use in a high-temperature environment.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is an exploded cross-sectional view of the cover;
fig. 4 is a top view of the cover.
Reference numerals: the heat insulation device comprises a cover body 1, a heat insulation pipeline 2, an oil inlet cavity 3, an oil outlet cavity 4, sealing rings I and 6, sealing rings II and 7, a shell and a torque motor 8.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Example 1. An oil return cooling upper cover structure of an electro-hydraulic servo valve resistant to high temperature and high pressure is shown in figures 1-4 and comprises a cover body 1, heat insulation pipelines 2 are distributed in the side wall and the top wall of the cover body 1, and a heat conduction medium capable of flowing is communicated in the heat insulation pipelines 2.
In use, the cover of the present invention is secured to the housing 7 by bolts, and the torque motor 8 is housed in the cover 1, see fig. 1.
This structure circulates in thermal-insulated pipeline 2 through heat-conducting medium, takes away the heat that outside operational environment transmitted to on the lid 1, makes lid 1 constitute an isolated outside temperature's thermal shroud structure, has protected the torque motor that covers in lid 1. Compared with the traditional structure that the cover body is covered with the heat shield, the structure of the invention is more compact, the occupied space is reduced, and the weight reduction (material reduction structure and heat shield removal) is realized.
The heat insulation pipeline 2 is in an S-shaped structure (see fig. 2-3) and covers the side wall and the top wall of the cover 1. This structure makes thermal-insulated pipeline 2 not only can the equipartition in the wall of whole lid 1, increases heat-conducting medium circulation path moreover to increase the heat conduction area of whole lid 1, promoted thermal-insulated effect.
More than one heat insulation pipeline 2 is distributed in the side wall and the top wall.
An oil inlet cavity 3 and an oil outlet cavity 4 are respectively arranged in the side wall; the oil inlets of the heat insulation pipelines 2 are communicated with the oil inlet cavity 3, and the oil outlets of the heat insulation pipelines 2 are communicated with the oil outlet cavity 4. Referring to fig. 2, the cover body 1 is provided with eight parallel oil passages (heat insulation passages 2) symmetrically inside with the plane of the oil inlet cavity and the oil outlet cavity as a symmetry plane.
The multi-pipeline structure realizes the multipath parallel-in and parallel-out of the heat-conducting medium, realizes the shunting effect of the heat-conducting medium, avoids the pressure build-up phenomenon caused by the overhigh pressure of the heat-conducting medium in a single-pipeline, and further reduces the risk of the rupture of the upper cover caused by the pressure build-up of the system. Compared with the traditional cover body, the cover body is provided with the reinforcing ribs for preventing the cover body from being broken due to pressure build-up, the cover body structure can prevent the pressure build-up, the traditional reinforcing rib structure is cancelled, the cover body structure is further optimized, and weight reduction is realized.
And a sealing ring I5 is arranged on the end surface of the cover body 1.
And the oil ports of the oil inlet cavity 3 and the oil outlet cavity 4 are provided with sealing rings II 6.
The ratio of the diameter of the cross section of the heat insulation pipeline 2 to the wall thickness of the cover 1 is 1: 6-8. This structure, when taking into account the heat dissipation and subtract heavy requirement, avoids influencing the bulk strength of lid because of the cross section diameter of heat insulating pipeline 2 is too big.
The distance from the axis of the heat insulation pipeline 2 in the side wall of the cover body 1 to the inner side wall of the cover body 1 is larger than the distance from the axis to the outer side wall of the cover body 1. This structure setting can fully absorb the heat of external environment fast based on the heat-conducting medium in heat insulation pipeline 2, reinforcing radiating effect, the internal torque motor of visor.
The distance from the axis of the heat insulation pipeline 2 in the top wall of the cover body 1 to the inner top wall of the cover body 1 is larger than the distance to the outer top wall of the cover body 1.
The heat-conducting medium is hydraulic oil. Specifically, cooling oil is returned to the system.
Claims (10)
1. The oil return cooling upper cover structure of the high-temperature and high-pressure resistant electro-hydraulic servo valve is characterized by comprising a cover body (1), heat insulation pipelines (2) are distributed in the side wall and the top wall of the cover body (1), and heat conduction media capable of flowing are communicated in the heat insulation pipelines (2).
2. The oil return cooling upper cover structure of the high temperature and high pressure resistant electro-hydraulic servo valve according to claim 1, wherein: the heat insulation pipeline (2) is of more than one S-shaped structure which is communicated in sequence and covers the side wall and the top wall of the cover body (1).
3. The oil return cooling upper cover structure of the high temperature and high pressure resistant electro-hydraulic servo valve according to claim 1, wherein: more than one heat insulation pipeline (2) is distributed in the side wall and the top wall.
4. The oil return cooling upper cover structure of the high temperature and high pressure resistant electro-hydraulic servo valve according to claim 3, wherein: an oil inlet cavity (3) and an oil outlet cavity (4) are respectively arranged in the side wall; the oil inlets of the heat insulation pipelines (2) are communicated with the oil inlet cavity (3), and the oil outlets of the heat insulation pipelines (2) are communicated with the oil outlet cavity (4).
5. The oil return cooling upper cover structure of the high temperature and high pressure resistant electro-hydraulic servo valve according to claim 1, wherein: the end face of the cover body (1) is provided with a sealing ring I (5).
6. The oil return cooling upper cover structure of the high temperature and high pressure resistant electro-hydraulic servo valve according to claim 1, wherein: and oil ports of the oil inlet cavity (3) and the oil outlet cavity (4) are provided with sealing rings II (6).
7. The oil return cooling upper cover structure of the high temperature and high pressure resistant electro-hydraulic servo valve according to claim 1, wherein: the ratio of the section diameter of the heat insulation pipeline (2) to the wall thickness of the cover body (1) is 1: 6-8.
8. The oil return cooling upper cover structure of the high temperature and high pressure resistant electro-hydraulic servo valve according to claim 1, wherein: the distance from the axis of the heat insulation pipeline (2) in the side wall of the cover body (1) to the inner side wall of the cover body (1) is larger than the distance to the outer side wall of the cover body (1).
9. The oil return cooling upper cover structure of the high temperature and high pressure resistant electro-hydraulic servo valve according to claim 1, wherein: the distance from the axis of the heat insulation pipeline (2) positioned in the top wall of the cover body (1) to the inner top wall of the cover body (1) is larger than the distance to the outer top wall of the cover body (1).
10. The oil return cooling upper cover structure of the high temperature and high pressure resistant electro-hydraulic servo valve according to claim 1, wherein: the heat-conducting medium is hydraulic oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011604975.7A CN112856012A (en) | 2020-12-30 | 2020-12-30 | High-temperature and high-pressure resistant electro-hydraulic servo valve oil return cooling upper cover structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011604975.7A CN112856012A (en) | 2020-12-30 | 2020-12-30 | High-temperature and high-pressure resistant electro-hydraulic servo valve oil return cooling upper cover structure |
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| Publication Number | Publication Date |
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| CN112856012A true CN112856012A (en) | 2021-05-28 |
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| CN202011604975.7A Pending CN112856012A (en) | 2020-12-30 | 2020-12-30 | High-temperature and high-pressure resistant electro-hydraulic servo valve oil return cooling upper cover structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201407923Y (en) * | 2009-04-09 | 2010-02-17 | 浙江银轮机械股份有限公司 | Disc-type engine oil cooler with embedded bypass structure |
| US20130087233A1 (en) * | 2010-04-08 | 2013-04-11 | Hoerbiger Kompressortechnik Holding Gmbh | Hollow valve plate |
| CN103759066A (en) * | 2013-12-26 | 2014-04-30 | 鞍山电磁阀有限责任公司 | High temperature and high pressure resistance electromagnetism driving stop valve inner screen outer dissipation heat insulation device |
| CN206429668U (en) * | 2017-01-20 | 2017-08-22 | 青岛海菲勒气控阀门有限公司 | A kind of new type high temperature angle pedestal valve valve body structure |
| CN111022754A (en) * | 2019-12-25 | 2020-04-17 | 中航工业南京伺服控制系统有限公司 | High-pressure-resistant oil return cooling upper cover structure of electro-hydraulic servo valve |
-
2020
- 2020-12-30 CN CN202011604975.7A patent/CN112856012A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201407923Y (en) * | 2009-04-09 | 2010-02-17 | 浙江银轮机械股份有限公司 | Disc-type engine oil cooler with embedded bypass structure |
| US20130087233A1 (en) * | 2010-04-08 | 2013-04-11 | Hoerbiger Kompressortechnik Holding Gmbh | Hollow valve plate |
| CN103759066A (en) * | 2013-12-26 | 2014-04-30 | 鞍山电磁阀有限责任公司 | High temperature and high pressure resistance electromagnetism driving stop valve inner screen outer dissipation heat insulation device |
| CN206429668U (en) * | 2017-01-20 | 2017-08-22 | 青岛海菲勒气控阀门有限公司 | A kind of new type high temperature angle pedestal valve valve body structure |
| CN111022754A (en) * | 2019-12-25 | 2020-04-17 | 中航工业南京伺服控制系统有限公司 | High-pressure-resistant oil return cooling upper cover structure of electro-hydraulic servo valve |
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