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Thrust calibration system for engine trial stand

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

Active Publication Date: 2019-11-05
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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  • Thrust calibration system for engine trial stand
  • Thrust calibration system for engine trial stand

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, an on-off valve, and an air filter , the first surge tank and the second surge tank;

[0043] The overflow valve is set with a threshold value. 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 port; 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 block 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...

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, an on-off valve, and an air filter , the first surge tank and the second surge tank;

[0055] The overflow valve is set with a threshold value. 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 port; 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 block 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...

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Abstract

The invention relates to a thrust calibration system for an engine trial stand. The system comprises a reciprocating driver, a first four-way valve, a second four-way valve, a reversing valve, a loading oil cylinder, a supercharging oil cylinder, an overflow valve, a switch valve, an air filter, a first buffer tank and a second buffer tank. According to the system, loading is smooth and free of impact, a leading screw is provided with a stop device and the overflow valve, the pressure of the supercharging cylinder is limited, and the pressure of the system is kept safe; the loading oil cylinder is not contracted with pressure during work by means of compressed air, and the engine trial safety is guaranteed; the system has no strict requirement for the cleanliness of an oil product; long-time force loading can be realized; and the system is high in pressure, low in noise, simple in structure, and low in 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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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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