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A Thrust Calibration System for Engine Test Bench

A calibration system and aero-engine technology, applied in the direction of engine testing, force/torque/work measurement instrument calibration/testing, and testing of machine/structural components, etc., can solve the problems of low cost and high cost, and achieve power consumption Small, high system pressure and simple structure

Active Publication Date: 2021-09-03
BEIJING AVIATION FEIFANG MACHINERY EQUIP FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, domestic thrust calibration systems mostly use hydraulic flow servo system, which has the advantage of simple principle but high cost; some also use PLC to drive hydraulic proportional relief valve to realize loading, which has the advantage of low cost but poor stability and repeatability

Method used

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  • A Thrust Calibration System for Engine Test Bench
  • A Thrust Calibration System for Engine Test Bench

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1, see attached figure 1 , specifically a thrust calibration system for an aero-engine test bench, including a reciprocating drive device, a first four-way, a second four-way, a reversing valve, a loading cylinder, a pressurized cylinder, an overflow valve, a switch valve, and an air filter , the first surge tank and the second surge tank;

[0043] The overflow valve is set with a threshold value, and when the oil pressure in the rod cavity of the booster cylinder exceeds the threshold value, the overflow valve connects the rod cavity of the booster cylinder with the first four-way; realizing the pressure relief of the rod cavity of the booster cylinder;

[0044] The test bench includes a moving frame and a fixed frame;

[0045] The cylinder body of the loading cylinder is fixed on one of the movable frame and the fixed frame, and the piston rod of the loaded oil cylinder applies thrust to the other of the movable frame and the fixed frame, and the thrust is...

Embodiment 2

[0054] Embodiment 2, see attached figure 1 , specifically a thrust calibration system for an aero-engine test bench, including a reciprocating drive device, a first four-way, a second four-way, a reversing valve, a loading cylinder, a pressurized cylinder, an overflow valve, a switch valve, and an air filter , the first surge tank and the second surge tank;

[0055] The overflow valve is set with a threshold value, and when the oil pressure in the rod cavity of the booster cylinder exceeds the threshold value, the overflow valve connects the rod cavity of the booster cylinder with the first four-way; realizing the pressure relief of the rod cavity of the booster cylinder;

[0056] The test bench includes a moving frame and a fixed frame;

[0057] The cylinder body of the loading cylinder is fixed on one of the movable frame and the fixed frame, and the piston rod of the loaded oil cylinder applies thrust to the other of the movable frame and the fixed frame, and the thrust is...

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Abstract

The invention relates to a thrust calibration system of an aero-engine test bench, comprising a reciprocating drive device, a first four-way, a second four-way, a reversing valve, a loading cylinder, a pressurized cylinder, an overflow valve, a switch valve, and an air filter device, the first surge tank and the second surge tank; the present invention loads smoothly without impact; the lead screw limit device and the overflow valve limit the pressure of the pressurized cylinder and protect the system pressure safety; the loading cylinder is driven by compressed air without When working, it retracts under pressure to ensure the safety of the engine test run; the system does not have strict requirements on the cleanliness of the oil; it can realize long-term force loading; the system has high pressure, low noise, simple structure, and low power consumption.

Description

technical field [0001] The invention relates to the field of aviation and aerospace engine complete machine testing, in particular to a thrust calibration system for an aeroengine test bench. Background technique [0002] The engine test bench is used for the test of aviation and aerospace engines, and the thrust measurement is a very important function. In order to measure accurately, it is necessary to calculate the resistance of the bench first. In order to measure the resistance of the bench, a standard force source loading system can be installed on the bench to simulate the real thrust of the engine, and the force is applied to the moving frame of the bench, and the moving frame pushes the thrust measurement sensor on the bench, through calculation The difference between the standard output force and the working measurement force is used to obtain the resistance of the bench itself. Within the range of the engine's range, its resistance value is not necessarily consta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/00G01M15/02G01L25/00
CPCG01L25/00G01M15/00G01M15/02
Inventor 孟进卓张迪王静张涛刘兵
Owner BEIJING AVIATION FEIFANG MACHINERY EQUIP FACTORY
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