Hot vacuum environment test moment value correction method
A technology of environmental testing and thermal vacuum, applied in the field of torque value correction, can solve problems such as effective correction of torque value, and achieve the effect of effectively correcting torque value
Active Publication Date: 2010-07-28
日照经济技术开发区城市发展投资集团有限公司
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[0006] In order to overcome the deficiency that the existing thermal vacuum environment parameter testing system cannot effectively correct the torque value, the present invention provides a thermal vacuum environment test torque value correction method that can effectively correct the torque value
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[0031] The present invention will be further described below in conjunction with the accompanying drawings.
[0032] refer to figure 1 with figure 2 , a thermal vacuum environment test torque value correction method, two identical magnetic fluid seal shafts are coaxially installed on both sides of the vacuum tank, and each of the two magnetic fluid seal shafts is equipped with a torque sensor.
[0033] according to figure 1 As shown, 1 is the vacuum tank, 13 and 23 are the left and right magnetic fluid seal shafts, and the friction torque N of the shaft 13 is defined in the thermal vacuum environment a , the friction torque of shaft 23 is N b . Each ferrofluid seal shaft has a friction torque outside the tank and inside the tank, which is defined as:
[0034] N a =N a1 +N a2
[0035] N b =N b1 +N b2
[0036] N a1 is the friction torque generated on the left side of the shaft 13, the friction torque is outside the tank, working under normal temperature and pressu...
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The invention relates to a hot vacuum environment test moment value correction method. Two identical magnetofluid sealing shafts are coaxially arranged at both sides of a vacuum tank, and a torque sensor is respectively arranged on the two magnetofluid sealing shafts. The method comprises the following steps: firstly, testing the friction moment of each magnetofluid sealing shaft at the normal temperature and the normal pressure; then, testing the total friction moment of the two magnetofluid sealing shafts as a whole body in hot vacuum environment through directing connecting the two magnetofluid sealing shafts; and calculating the friction moment variable quantity of the two magnetofluid sealing shafts at the normal temperature and the normal pressure in the hot vacuum environment through the above two test results. Thereby, the value of the friction moment of each magnetofluid sealing shaft in the hot vacuum environment can be obtained. The invention provides the hot vacuum environment test moment value correction method which can effectively correct the moment value.
Description
technical field [0001] The invention relates to the field of thermal vacuum environment parameter testing, in particular to a torque value correction method. Background technique [0002] Thermal vacuum test refers to a test to verify the function and performance of a mechanism or device in a space vacuum, cool black and solar radiation environment, that is, under specified vacuum and thermal cycle conditions. Usually, the mechanism or device to be tested is placed in a vacuum tank, and the required environment is achieved through special thermal vacuum equipment. In the thermal vacuum test, the torque test of the mechanism or device is often a very important indicator. [0003] Since the measured mechanism or device is in a thermal vacuum environment, ordinary sensors cannot be used normally in a thermal vacuum environment, so it is very difficult to measure easily at normal temperature and pressure. Both in-tank and out-of-tank solutions are included. The scheme of in-t...
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IPC IPC(8): G01L5/00
Inventor 孙建辉单晓杭潘柏松梁利华
Owner 日照经济技术开发区城市发展投资集团有限公司