CN112856012B - High-temperature-resistant and high-pressure-resistant electrohydraulic servo valve oil return cooling upper cover structure - Google Patents
High-temperature-resistant and high-pressure-resistant electrohydraulic servo valve oil return cooling upper cover structure Download PDFInfo
- Publication number
- CN112856012B CN112856012B CN202011604975.7A CN202011604975A CN112856012B CN 112856012 B CN112856012 B CN 112856012B CN 202011604975 A CN202011604975 A CN 202011604975A CN 112856012 B CN112856012 B CN 112856012B
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- Prior art keywords
- cover body
- heat insulation
- oil
- servo valve
- upper cover
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Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a high-temperature and high-pressure resistant electrohydraulic servo valve oil return cooling upper cover structure. The heat-insulating cover comprises a cover body (1), heat-insulating pipelines (2) are distributed in the side wall and the top wall of the cover body (1), and heat-conducting media capable of flowing are communicated in the heat-insulating 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 electrohydraulic servo valve oil return cooling upper cover structure.
Background
The electrohydraulic servo valve (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, heat can be transferred to the electro-hydraulic servo valve when the engine works for a long time, and the electromagnetic performance of the pre-stage part of the electro-hydraulic servo valve is influenced, so that the output performance of the electro-hydraulic servo valve is changed, and the engine works abnormally. The prior cooling system mainly covers a heat shield outside the cover body to realize the thermal isolation of the torque motor and the external environment. However, this structure is relatively bulky and heavy, and has gradually been incompatible with the structural and weight requirements of aircraft engine systems.
Disclosure of Invention
The purpose of the invention is that: the oil return cooling upper cover structure of the high-temperature and high-pressure resistant electrohydraulic servo valve is provided. The invention has the characteristics of good heat insulation effect, small volume and light weight.
The technical scheme of the invention is as follows: the utility model provides a high temperature and high pressure resistant electrohydraulic servo valve oil return cooling upper cover structure, includes the lid, and the lateral wall and the roof of lid are interior to be distributed with thermal-insulated pipeline, lead to in the thermal-insulated pipeline has the heat-conducting medium that can flow.
In the high-temperature and high-pressure resistant electrohydraulic servo valve oil return cooling upper cover structure, the heat insulation pipeline is of a sequentially communicated more than one S-shaped structure and is covered in the side wall and the top wall of the cover body.
In the high-temperature and high-pressure resistant electrohydraulic servo valve oil return cooling upper cover structure, more than one heat insulation pipeline is distributed in the side wall and the top wall.
In the high-temperature and high-pressure resistant electrohydraulic servo valve oil return cooling upper cover structure, an oil inlet cavity and an oil outlet cavity are 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 high-temperature and high-pressure resistant electrohydraulic servo valve oil return cooling upper cover structure, the end face of the cover body is provided with the sealing ring I.
In the high-temperature and high-pressure resistant electrohydraulic servo valve oil return cooling upper cover structure, the oil inlets and the oil outlets of the oil inlet cavity and the oil outlet cavity are provided with the sealing rings II.
In the high-temperature and high-pressure resistant electrohydraulic servo valve oil return cooling upper cover structure, the ratio of the section diameter of the heat insulation pipeline to the wall thickness of the cover body is 1:6-8.
In the high-temperature-resistant high-pressure-resistant electrohydraulic servo valve oil return cooling upper cover structure, the distance from the axis of the heat insulation pipeline in the side wall of the cover body to the inner side wall of the cover body is larger than the distance from the axis of the heat insulation pipeline to the outer side wall of the cover body.
In the high-temperature-resistant high-pressure-resistant electrohydraulic servo valve oil return cooling upper cover structure, the distance from the axis of the heat insulation pipeline in the top wall of the cover body to the top wall of the cover body is larger than the distance from the axis of the heat insulation pipeline to the top wall of the cover body.
In the high-temperature and high-pressure resistant electrohydraulic servo valve oil return cooling upper cover structure, the heat conducting medium is hydraulic oil.
The invention has the advantages that: the side wall and the top wall of the existing upper cover body are internally provided with heat insulation pipelines, and heat conduction media capable of flowing are communicated in the heat insulation pipelines; the heat of the surface of the upper cover is taken away by the heat conducting medium introduced into the upper cover, so that the isolation of the electro-hydraulic servo valve and the external high-temperature environment is realized, the environmental temperature of the pre-stage of the electro-hydraulic servo valve (torque motor) is ensured to be reduced, the pre-stage of the electro-hydraulic servo valve is protected, the electro-hydraulic servo valve is prevented from working in the extremely high-temperature environment, and the output performance of the electro-hydraulic servo valve is further ensured. In addition, through the mode of seting up the heat-proof pipeline in current upper cover lateral wall and top, guarantee under the unchangeable circumstances of original volume, alleviateed the weight of upper cover greatly, increased heat radiating area, not only taken away environmental heat and protected torque motor, solved moreover because of the risk that the system is suppressed and lead to the upper cover to break and bring, improved upper cover compressive strength.
In conclusion, the invention effectively reduces the weight of the product (according to the measurement, the weight of the cover body of the invention can be reduced by more than 50 percent relative to the weight of the traditional cover body), reduces the temperature of the front stage of the electrohydraulic servo valve, can resist the high pressure risk caused by the system fault, and improves the use safety of the servo valve in a high-temperature environment.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is an expanded cross-sectional view of the cover;
Fig. 4 is a top view of the cover.
Reference numerals: 1-cover body, 2-heat insulation pipeline, 3-oil inlet cavity, 4-oil outlet cavity, 5-sealing ring I, 6-sealing ring II, 7-shell and 8-torque motor.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not intended to be limiting.
Example 1. The structure of the high-temperature and high-pressure resistant electrohydraulic servo valve oil return cooling upper cover is shown in figures 1-4, and comprises a cover body 1, wherein 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 bolted to the housing 7, covering the torque motor 8 within the cover 1, see fig. 1.
According to the structure, heat transferred to the cover body 1 from the external working environment is taken away through circulation of the heat conducting medium in the heat insulation pipeline 2, so that the cover body 1 forms a heat insulation cover structure for isolating external temperature, and a torque motor covered in the cover body 1 is protected. Compared with the traditional structure of covering the heat shield outside the cover body, the heat shield structure is more compact, reduces the occupied space, and realizes weight reduction (material reduction structure and heat shield saving).
The heat insulation pipeline 2 is in a sequentially communicated more than one S-shaped structure (see fig. 2-3), and covers the side wall and the top wall of the cover body 1. This structure makes thermal-insulated pipeline 2 not only can equipartition in the wall of whole lid 1, increases the heat conduction medium circulation route moreover to increased 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 1 is provided with eight parallel oil pipelines (heat insulation pipelines 2) symmetrically in a plane where the oil inlet and outlet cavities are located.
The multi-pipeline structure realizes the multipath and merging of the heat conducting medium, realizes the diversion effect of the heat conducting medium, avoids the pressure holding phenomenon caused by the overhigh pressure of the heat conducting medium in the single-pipeline, and further reduces the risk of upper cover rupture caused by pressure holding of the system. Compared with the traditional cover body, in order to prevent the cover body from being broken due to pressure holding, the invention can prevent pressure holding and cancel the traditional reinforcing rib structure, further optimize the cover body structure and realize weight reduction.
The end face of the cover body 1 is provided with a sealing ring I5.
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 section diameter of the heat insulation pipeline 2 to the wall thickness of the cover body 1 is 1:6-8. This structure avoids influencing the bulk strength of the lid because of the section diameter of thermal-insulated pipeline 2 is too big when taking into account heat dissipation and subtracting important requirement.
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 of the heat insulation pipeline to the outer side wall of the cover body 1. This structure sets up, based on the heat conduction medium in the thermal-insulated pipeline 2 can fully absorb the heat of external environment fast, strengthens the radiating effect, the internal torque motor of visor.
The distance from the axis of the insulated pipe 2 in the top wall of the cover 1 to the inner top wall of the cover 1 is greater than the distance from the axis to the outer top wall of the cover 1.
The heat conducting medium is hydraulic oil. Specifically, the system is returned with cooling oil.
Claims (6)
1. The oil return cooling upper cover structure of the high-temperature and high-pressure resistant electrohydraulic servo valve is characterized by comprising a cover body (1), wherein 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); more than one heat insulation pipeline (2) is distributed in the side wall and the top wall; 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; the distance from the axis of the heat insulation pipeline (2) positioned 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); 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 from the axis of the heat insulation pipeline to the outer top wall of the cover body (1).
2. The high temperature and high pressure resistant electro-hydraulic servo valve return oil cooling upper cover structure according to claim 1, wherein: the heat insulation pipeline (2) is of a structure of more than one S-shaped structure which are communicated in sequence and is covered in the side wall and the top wall of the cover body (1).
3. The high temperature and high pressure resistant electro-hydraulic servo valve return oil cooling upper cover structure according to claim 1, 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).
4. The high temperature and high pressure resistant electro-hydraulic servo valve return oil cooling upper cover structure according to claim 1, wherein: the end face of the cover body (1) is provided with a sealing ring I (5).
5. The high temperature and high pressure resistant electro-hydraulic servo valve return oil cooling upper cover structure according to claim 3, wherein: and oil ports of the oil inlet cavity (3) and the oil outlet cavity (4) are provided with sealing rings II (6).
6. The high temperature and high pressure resistant electro-hydraulic servo valve return oil cooling upper cover structure according to claim 1, wherein: the heat conducting medium is hydraulic oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011604975.7A CN112856012B (en) | 2020-12-30 | 2020-12-30 | High-temperature-resistant and high-pressure-resistant electrohydraulic servo valve oil return cooling upper cover structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011604975.7A CN112856012B (en) | 2020-12-30 | 2020-12-30 | High-temperature-resistant and high-pressure-resistant electrohydraulic servo valve oil return cooling upper cover structure |
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| Publication Number | Publication Date |
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| CN112856012A CN112856012A (en) | 2021-05-28 |
| CN112856012B true CN112856012B (en) | 2024-10-01 |
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| CN202011604975.7A Active CN112856012B (en) | 2020-12-30 | 2020-12-30 | High-temperature-resistant and high-pressure-resistant electrohydraulic servo valve oil return cooling upper cover structure |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN120292140A (en) * | 2025-06-16 | 2025-07-11 | 成都晨发泰达航空科技股份有限公司 | An electro-hydraulic servo valve torque motor for an APU fuel regulator |
Citations (1)
| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT509081B1 (en) * | 2010-04-08 | 2011-06-15 | Hoerbiger Kompressortech Hold | HOLLOW VALVE PLATE |
| CN103759066B (en) * | 2013-12-26 | 2017-02-01 | 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 |
| CN111022754B (en) * | 2019-12-25 | 2021-11-19 | 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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2020
- 2020-12-30 CN CN202011604975.7A patent/CN112856012B/en active Active
Patent Citations (1)
| 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 |
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| CN112856012A (en) | 2021-05-28 |
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