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Drainage engine kerosene servo mechanism ground test method

A technology of servo mechanism and ground test, applied in the field of servo mechanism, can solve the problems of low safety of kerosene medium, explosion, lack of reference of test methods, etc., and achieve the effects of reliable test results, simple principle and comprehensive test coverage.

Active Publication Date: 2017-03-15
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

At this stage, there are very few servo mechanisms powered by hydraulic motors at home and abroad, so there is a lack of reference for corresponding testing methods
In addition, the safety of the kerosene medium is low. In addition, the kerosene medium has high requirements for the design and manufacture of the energy platform. Once a dangerous source appears during the test, safety accidents such as explosions are very likely to occur.

Method used

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  • Drainage engine kerosene servo mechanism ground test method
  • Drainage engine kerosene servo mechanism ground test method
  • Drainage engine kerosene servo mechanism ground test method

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] The hydraulic motor is a first-class energy source that provides power for the servo mechanism. It is a part of the power assembly of the servo mechanism. When the servo mechanism is working on the rocket, it drains the high-pressure kerosene of the rocket engine to the oil inlet of the hydraulic motor, and the high-pressure kerosene drives the hydraulic motor at a constant speed. Rotate, and then drive the axial piston pump to provide high-pressure hydraulic oil for the servo mechanism, and complete the position servo control of the servo mechanism.

[0042] Such as figure 1 As shown, the ground test method of the kerosene servo mechanism of the drainage engine includes four steps: pressure test, kerosene replacement, positive pressure airtight test and negative pressure airtight test.

[0043] 1. Stress test

[0044] The purpose of...

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Abstract

The invention discloses a drainage engine kerosene servo mechanism ground test method, and belongs to the technical field of a servo mechanism. The drainage engine kerosene servo mechanism ground test method comprises the steps of firstly adopting aviation hydraulic oil to replace kerosene, and performing a dynamic test on a servo mechanism hydraulic motor; then performing kerosene replacement on the servo mechanism hydraulic motor; and finally, performing air tightness detection by respectively adopting positive pressure detection and negative pressure detection. According to the invention, a ground hydraulic energy source is adopted to replace an engine kerosene source, a ground dynamic test is performed on the hydraulic motor, the principle is simple, the reliability is high, and the test process is safer for an operator at the same time; air tightness checking is performed on a drainage connecting loop by adopting a positive pressure mode and a negative pressure mode respectively, positive and negative pressure sealing capacities of the hydraulic motor in external sealing is fully considered, and a guarantee is provided for reliable work of the servo mechanism in an all-rocket system.

Description

technical field [0001] The invention relates to a ground test method for a kerosene servo mechanism of a drainage engine, and belongs to the technical field of servo mechanisms. Background technique [0002] The servo mechanism is the actuator of rocket thrust vector control, and it is a typical representative of integrated design, which integrates hydraulic pipelines, hydraulic components, power energy, and measurement and control plugs. The power energy includes hydraulic motor, axial plunger pump, etc. When the servo mechanism is working on the rocket, the fluoroplastic hose is connected to the engine drainage interface to drain the high-pressure kerosene of the liquid rocket engine, driving the hydraulic motor to rotate at a high speed, and the power is transmitted through the rotor Provide high-pressure oil to the axial piston pump and the actuator of the servo mechanism, and return the kerosene to the engine system through the low-pressure hose after the work is done. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/00G01M3/20G01M3/26
CPCG01M3/20G01M3/202G01M3/26
Inventor 陈克勤张文海张朋刘洪姜庆义晋华峰
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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