Device and method for measuring dynamic circular vector force of impeller of pump device
A technology of measuring device and pump device, which is applied in the direction of measuring device, fluid pressure measurement using piezoelectric devices, and electric/magnetic device transmission of sensing components, etc., which can solve the test that cannot meet the requirements of high stiffness, high sensitivity and high frequency response Requirements and other issues, to achieve the effect of simple structure, small nonlinear error and repeatability error, and wide measurement range
Active Publication Date: 2019-04-05
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology
Therefore, the measurement principle of deformation of the elastic element under force cannot meet the test requirements of high stiffness, high sensitivity, and high frequency response.
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[0031] Below in conjunction with accompanying drawing, the present invention will be further described:
[0032] The present invention proposes a dynamic circular vector force measuring device for the impeller of a pump device, which includes a left flange 1, an upper cover 2, a base 3 and a right flange 4, and the upper cover 2 and the base 3 are connected to each other by pre-tightening bolts E Afterwards, it is arranged between the left flange 1 and the right flange 4, and is characterized in that: a piezoelectric quartz crystal group L is arranged between the loam cake 2 and the base 3, wherein the left and right flanges have the same shape and a mirror image structure Symmetrical, designed with a through hole A, an outer concave stop B and an inner concave stop Q, and a tightening bolt hole D; the upper cover 2 and the base 3 are respectively provided with a pre-tightening bolt hole C and a threaded hole M, and the left flange 1 , loam cake 2, base 3 and right flange plat...
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A device for measuring impeller dynamic circular vector force of a pump device, comprising a left flange, an upper cover, a base and a right flange, the upper cover and the base are connected to each other and arranged between the left flange and the right flange. A piezoelectric quartz crystal group is arranged between the upper cover and the base, and the left flange, upper cover, base and right flange are rigidly connected to form an integral structure that rotates synchronously with the main shaft of the pump device. The invention has the advantages of simple structure, good dynamic characteristics and high sensitivity, solves the difficult problem of measuring the dynamic circular vector force of the impeller of the pump device, and provides for further understanding the actual radial force state of the impeller of the pump device and improving the safety and reliability of the design of the pump device Reference.
Description
Technical field: [0001] The invention relates to a device and method for measuring dynamic circular vector force of an impeller of a pump device, and belongs to the technical field related to the measurement of the hydraulic radial load inside the impeller of a pump fluid machine. Background technique: [0002] In petrochemical, national defense, nuclear power and other fields, the stability and safety of pump fluid machinery is very important. When the fluid mechanical impeller is working, due to the structure of the pump casing and the complex flow field inside the impeller, the impeller generates a radial force. The radial force causes the pump shaft to be subjected to alternating stress, resulting in directional deflection, which directly affects the work of the pump shaft. stability. At the same time, due to the effect of radial force, the gap of the shaft seal will become uneven, which will lead to leakage of the pump device in severe cases. Therefore, it is very nec...
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IPC IPC(8): G01L9/08G01D5/244
CPCG01D5/244G01L9/08
Inventor 高翼飞王世杰项中天刘慧芳
Owner SHENYANG POLYTECHNIC UNIV