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A Self-pressurizing Circuit of Servo Mechanism Working in Parallel

A servo-mechanism, self-pressurization technology, applied in mechanical equipment, accumulator devices, fluid pressure converters, etc., can solve the problems of short stroke of fuel tank piston, low spring pressure, low reliability, etc., to reduce the weight of the circuit , the effect of reducing volume and improving reliability

Active Publication Date: 2018-04-27
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of pressurized oil tank circuit has the characteristics of simple structure and easy realization, but it also has the characteristics of heavy weight, low reliability, short stroke of the oil tank piston, and small pressure provided by the spring.

Method used

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  • A Self-pressurizing Circuit of Servo Mechanism Working in Parallel
  • A Self-pressurizing Circuit of Servo Mechanism Working in Parallel
  • A Self-pressurizing Circuit of Servo Mechanism Working in Parallel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0054] 1. Pressure of high-pressure gas booster fuel tank: accumulator pressure 6-12MPa, gas booster rod diameter 16mm, fuel tank piston diameter 80mm, ignoring the friction force of the booster rod, the pressure of the booster fuel tank can be 0.24-0.48MPa, that is, in the hydraulic pressure Before the pump starts, the circuit pressure is about 0.24~0.48MPa.

[0055] 2. Fuel tank pressure of high-pressure liquid booster: After the hydraulic pump is started, the working pressure is 20-21.5MPa, the diameter of the liquid booster rod is 14mm, and the diameter of the fuel tank piston is 80mm. Neglecting the friction force of the booster rod, the pressure of the second fuel tank is 0.61 ~0.66MPa. At this time, the gas in the accumulator is squeezed, and the gas pressure rises to be consistent with the working pressure, that is, 20-21.5MPa. The pressure of the first fuel tank is 0.8-0.86MPa, and the first fuel tank is emptied first. If the first fuel tank has not been emptied, the...

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Abstract

The invention discloses a servo mechanism self-pressurization loop working in parallel connection. The servo mechanism self-pressurization loop has the beneficial effects of being small in size and light in weight and is a self-servo-mechanism self-pressurization loop which has redundant energy and works in parallel connection. High-pressure oil and high-pressure gas are adopted for self-pressurization, and certain pressure is provided for servo system oil tanks with energy redundant, so that a servo mechanism system with both oil self-pressurization energy and gas self-pressurization energy redundant is achieved. The targets of being high in reliability, small in size and light in weight are reached.

Description

technical field [0001] The invention relates to a self-pressurizing circuit of servo mechanisms working in parallel. The circuit is composed of hydraulic circuits of two servo mechanisms, and the circuit is pressurized by high-pressure gas and high-pressure oil respectively. Background technique [0002] The servo system is the collective name of the subsystems of the launch vehicle flight control actuator in my country, and it is the system that promotes the rocket engine to achieve thrust vector control. my country's new generation of launch vehicles puts forward higher reliability requirements for the servo system. In addition, the installation space around the engine is limited, and the volume and weight requirements are more stringent. How to meet the increasingly stringent technical requirements of launch vehicles has become one of the driving forces for the development of servo systems. [0003] In order to improve the reliability of the servo system and ensure the g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B3/00F15B1/027
CPCF15B1/027F15B3/00
Inventor 王增张晓莎尹传威景光辉李凌云刘新
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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