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Device and method for testing leakage characteristics of hot disk edge seal

A characteristic test, disc edge technology, applied in the direction of using liquid/vacuum for liquid tightness measurement, by measuring the fluid's acceleration and deceleration rate, etc., can solve problems such as difficulty in test and test, flowmeter and pressure gauge are not resistant to high temperature, etc.

Active Publication Date: 2019-10-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of experimental testing, since most flowmeters and pressure gauges are not resistant to high temperatures, it will bring difficulties to experimental testing

Method used

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  • Device and method for testing leakage characteristics of hot disk edge seal
  • Device and method for testing leakage characteristics of hot disk edge seal
  • Device and method for testing leakage characteristics of hot disk edge seal

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Experimental program
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Embodiment Construction

[0029] The present invention will be further explained below in conjunction with the accompanying drawings.

[0030] Such as figure 1 As shown, a kind of hot-state flange seal leakage characteristic testing device of the present invention comprises flange seal test bench 1, and described flange seal test bench 1 is provided with two air inlets and an air outlet, two The two air inlets are respectively the main flow air inlet and the secondary flow air inlet, which are respectively connected with the main flow air inlet 2 and the secondary flow air inlet 3, and the air outlet is connected with a mixed air outlet 4; wherein:

[0031] Mainstream air intake 2 is generated by mainstream gas generating device 201 and heated by electric heating system 206. Mainstream gas generating device 201 and electric heating system 206 are connected by a pipeline, and the pipeline is provided with a first pressure gauge 202, a main flow The gas valve 203, the first thermocouple 204, the vortex ...

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Abstract

The invention discloses a thermal-state disc edge seal leakage characteristic test device. The thermal-state disc edge sealing leakage characteristic test device comprises a disc edge seal test bed. The disc edge seal test bed is provided with two gas inlets and a gas outlet, and the gas inlets and the gas outlet are connected with main flow inlet gas, secondary flow inlet gas and mixed outlet gascorrespondingly. The main flow inlet gas is generated by a main flow gas generating device and heated by an electric heating system, and the main flow gas generating device and the electrical heatingsystem are connected through a pipeline; the electric heating system is connected with the main flow gas inlet of the disc edge seal test bed; the secondary flow inlet gas is generated by a secondaryflow gas generating device, and the secondary flow gas generating device is connected with the secondary flow gas inlet of the disc edge seal test table through a pipeline; and the mixed outlet gas comprises a pipeline connected to the gas outlet of the disc edge seal test bed. According to the thermal-state disc edge seal leakage characteristic test device, by conducting temperature compensationon a thermocouple, the temperature in the test process can be tested, and by improving a pressure gauge, the pressure of the heated gas in the test process can be tested.

Description

technical field [0001] The invention relates to the field of edge sealing, in particular to a device for testing the leakage characteristics of hot edge sealing. Background technique [0002] In turbomachinery, the turbine disk is the main load-bearing component, and its outer ring surface is directly in contact with the mainstream gas, and the heat will be transferred along the outer ring surface to the center of the disk, so that the turbine disk bears a huge heat load. It can work safely and reliably, and must provide a certain amount of air-conditioning for cooling. Equation (1) is the expression of the actual thermal efficiency of the turbomachinery. [0003] [0004] In the formula, π is the cycle pressure ratio, η T is the relative internal efficiency of turbomachinery, η C,s is the adiabatic efficiency of the compressor, κ is the adiabatic index of the working fluid, and τ is the cycle temperature increase ratio: the ratio of the highest temperature to the lowe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/26
Inventor 王锁芳董伟林李鹏飞
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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