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High-temperature-resistant and high-pressure-resistant oil return cooling upper cover structure of electro-hydraulic servo valve

An electro-hydraulic servo valve, high temperature resistance technology, applied in the field of mechanical hydraulics, can solve problems such as large volume, and achieve the effect of increasing heat dissipation area, reducing weight, and ensuring output performance

Pending Publication Date: 2021-05-28
AVIC NANJING SERVO CONTROL SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure is relatively large and heavy, and has gradually become incompatible with the structure and weight requirements of the aero-engine system.

Method used

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  • High-temperature-resistant and high-pressure-resistant oil return cooling upper cover structure of electro-hydraulic servo valve
  • High-temperature-resistant and high-pressure-resistant oil return cooling upper cover structure of electro-hydraulic servo valve
  • High-temperature-resistant and high-pressure-resistant oil return cooling upper cover structure of electro-hydraulic servo valve

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Example 1. A high temperature and high pressure resistant electro-hydraulic servo valve oil return cooling upper cover structure, the structure is as follows Figure 1-4 As shown, the cover body 1 is included, and the heat insulation pipeline 2 is distributed in the side wall and the top wall of the cover body 1, and the heat insulation pipeline 2 is passed with a flowable heat conduction medium.

[0023] During use, the cover body of the present invention is fixed on the casing 7 by bolts, and the torque motor 8 is covered in the cover body 1, see figure 1 .

[0024] This structure, through the heat conduction medium circulating in the heat insulation pipeline 2, takes away the heat transferred from the external working environment to the cover body 1, so that the cover body 1 forms a heat insulation cover structure that isolates the external temperature, protecting the cover on the cover body. Torque motor in body 1. Compared with the traditional structure in which...

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Abstract

The invention discloses a high-temperature-resistant and high-pressure-resistant oil return cooling upper cover structure of an electro-hydraulic servo valve. The high-temperature-resistant and high-pressure-resistant oil return cooling upper cover structure 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 heat conduction media capable of flowing are introduced into the heat insulation pipelines (2). The high-temperature-resistant and high-pressure-resistant oil return cooling upper cover structure has the characteristics of good heat insulation effect, small size and light weight.

Description

technical field [0001] The invention belongs to the technical field of mechanical hydraulics, and relates to a high temperature and high pressure resistant electro-hydraulic servo valve oil return cooling upper cover structure. Background technique [0002] Electro-hydraulic servo valve (torque motor), as the core component of precise and complex hydraulic servo control, is widely used in the field of aerospace engines. The temperature at the engine nozzle is high, and long-term work will cause heat to be transferred to the electro-hydraulic servo valve, which will affect the electromagnetic performance of the pre-stage parts of the electro-hydraulic servo valve, thereby changing the output performance of the electro-hydraulic servo valve, resulting in abnormal engine operation. The current cooling system is mainly to cover a heat shield outside the cover to realize the thermal isolation of the torque motor from the external environment. However, the structure is relatively...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K27/12F16K49/00F15B13/02
CPCF16K27/12F16K49/007F15B13/02
Inventor 郭江峰赵义伟张驰钱占松
Owner AVIC NANJING SERVO CONTROL SYST CO LTD