Small aero-engine test run stand thrust calibrating system

An aero-engine and calibration system technology, which is applied in the field of thrust calibration systems for small aero-engine test benches, and can solve problems such as high price and complex system.

Inactive Publication Date: 2016-03-30
CHINA GAS TURBINE ESTAB
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, although the hydraulic servo system has the advantages of high precision and large carrying capacity, the system is complex and expensive

Method used

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  • Small aero-engine test run stand thrust calibrating system
  • Small aero-engine test run stand thrust calibrating system
  • Small aero-engine test run stand thrust calibrating system

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Experimental program
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Embodiment Construction

[0014] At present, the thrust of an aero-engine is obtained through the measurement of the engine test. In order to ensure the accuracy of the thrust measurement, the most effective method is to use the standard force to calibrate the thrust measurement system of the bench. This is the case both at home and abroad, but the calibration Procedures and methods are slightly different.

[0015] For the principle of pressure-loaded thrust calibration, see image 3 . The system consists of a pressure source, a surge tank, a loading cylinder, a force sensor, and an acquisition computer. When the thrust is calibrated, the cylinder is connected to an independent pressure source, and the pressure can be adjusted as required. The piston rod acts on the calibration sensor and transmits it to the working sensor through the moving frame. Thrust calibration is done by adjusting air pressure. The voltage signal output by the sensor enters the VXI acquisition system, and the thrust measureme...

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Abstract

The invention relates to a small aero-engine high-altitude simulated test, especially relates to a small aero-engine test run stand thrust calibrating system comprising a stand, sensors, and a force loading system. The stand is respectively provided with a working sensor and a calibrating sensor. The small aero-engine test run stand thrust calibrating system is characterized in that the force loading system comprises a gas source, a pressure stabilizing tank, and a cylinder; the gas source is communicated with the cylinder by a pressure stabilizing tank, and one end of the cylinder is connected with the stand. By adopting the air pressure loading device for the thrust preloading, the influence of the vacuum degree on the engine thrust measurement can be neglected, and the stratochamber vacuum degree of the turbojet, fanjet high altitude simulated test thrust correction term can be neglected.

Description

technical field [0001] The invention relates to a high-altitude simulation test of a small aero-engine, in particular to a thrust calibration system of a test bench of a small aero-engine. Background technique [0002] As we all know, thrust is an important index to evaluate the performance of turbojet and turbofan engines. When the high-altitude engine simulation test is carried out on the high-altitude platform, preloading is required according to different test conditions. Whether the thrust measurement system can work reliably becomes the key to accurate thrust measurement. Therefore, the thrust measurement of the high-altitude table test is particularly important. [0003] Such as figure 1 and 2 As shown, traditionally used thrust calibration devices include weight lever calibration and hydraulic loading calibration. In the 1950s and 1960s, a mechanical lever type was used to add weight loading for thrust calibration. When using this method, the weight is used as a...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01M15/02
CPCG01M15/02
Inventor郭强屈成泽王敏王月贵曾烨
OwnerCHINA GAS TURBINE ESTAB