Hot backup dual-redundancy electro-hydraulic servo valve control system based on pipeline fluid parameter design

An electro-hydraulic servo valve and fluid parameter technology, which is applied to fluid pressure actuation system components, mechanical equipment, servo motor components, etc., can solve problems such as the inability to independently manufacture hot backup double-redundant electro-hydraulic servo valves, and reduce development Cost and risk, improve system reliability, shorten the effect of development cycle

Inactive Publication Date: 2014-07-23
AIR FORCE UNIV PLA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, it is difficult to independently manufacture hot backup dual-redundancy electro-hydraulic servo valves (especially dual-redundancy jet tube electro-hydraulic servo valves) in China.

Method used

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  • Hot backup dual-redundancy electro-hydraulic servo valve control system based on pipeline fluid parameter design
  • Hot backup dual-redundancy electro-hydraulic servo valve control system based on pipeline fluid parameter design
  • Hot backup dual-redundancy electro-hydraulic servo valve control system based on pipeline fluid parameter design

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Embodiment Construction

[0026] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0027] Taking the fuel supply system of a certain type of aeroengine as an example, to ensure that the engine works at a state where the high-pressure rotor speed is ≥85%, the required fuel flow rate should be ≥25L / min. according to figure 1 Design the system structure, in which the working pressure of the fuel oil at the inlet of the electro-hydraulic servo valve is 17~21Mpa, the outlet pressure of the fuel oil (that is, the pressure of the combustion chamber)≯3Mpa, the corresponding pressure difference between the inlet and outlet is 14~18Mpa, and the pipe diameter of the fuel system is Ф6.

[0028] This embodiment includes a plunger pump, a constant pressure valve, an adapter block inlet pipe diameter and an outlet pipe diameter matching the pipeline flow parameters, and a double-redundancy electro-hydraulic servo valve; the output end of the double-redundancy...

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Abstract

The invention relates to a hot backup dual-redundancy electro-hydraulic servo valve control system based on pipeline fluid parameter design. A constant-pressure valve is arranged on an inlet of an electro-hydraulic servo valve to ensure stable differential pressure between a fluid on the inlet and a fluid on an outlet, according to the differential pressure between the fluid on the inlet and the fluid on the outlet and required maximum flow, the diameter of an inlet and outlet pipe is matched through selection, and meanwhile an adapter block is designed to connect two independent electro-hydraulic servo valve pipelines in parallel to construct the hot backup dual-redundancy electro-hydraulic servo valve control system. No dual-redundancy electro-hydraulic servo valve exists in the domestic market at present, and compared with the prior art, the hot backup dual-redundancy electro-hydraulic servo valve control system has the advantages that the urgent requirement for the dual-redundancy electro-hydraulic servo valve of an existing high-reliability system is met, switching between two electro-hydraulic servo valves when faults occur is avoided through the constructed hot backup electro-hydraulic servo valve, and reliability of the system is improved; the problems that at present, a domestic dual-redundancy electro-hydraulic servo valve is low in design, manufacturing, machining technology levels and low in reliability are solved, the complex problems are simplified, development cost and risks are reduced, and the development period is shortened.

Description

technical field [0001] The invention belongs to the field of fluid control of hydraulic machinery such as aviation, aerospace, and navigation, and the technical category of system reliability, and specifically relates to a hot backup dual-redundancy electro-hydraulic servo valve control system based on pipeline fluid parameter design. Background technique [0002] In the field of hydraulic mechanical fluid control, in order to improve the reliability of the control system, a hot backup dual-redundancy electro-hydraulic servo valve control system is often used. However, due to the complex structure and high technical content of the high-reliability dual-redundant electro-hydraulic servo valve, there are many difficulties in design, manufacturing, and processing technology in my country, which are difficult to overcome in a short time. In order to meet the high reliability requirements of the control system in the fields of aviation, aerospace, and navigation, this patent prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02F15B21/00
Inventor 谢寿生田虎森彭靖波任立通张驭
Owner AIR FORCE UNIV PLA
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