Model Experimental Device and Method for Measuring the Impedance Coefficient of Surge Chamber
A technology of impedance coefficient and model experiment, which is applied in the direction of measuring device, fluid dynamics test, machine/structural component test, etc., can solve the problem of less water flow in and out of the surge chamber, and achieve the effect of simple operation and convenient switching of working conditions
Active Publication Date: 2020-11-17
WUHAN UNIV
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Problems solved by technology
At present, most of the existing model experimental devices are single-pipe single-machine systems, and the working conditions of water flow in and out of the surge chamber are relatively simple, and the model experiments under complex working conditions are rarely involved.
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[0051] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0052] Such as figure 1 The model experimental device for measuring the impedance coefficient of the surge chamber shown includes 1-upstream water tank, 2-surge chamber test section, 3-downstream water tank, 4-electromagnetic flowmeter #1, 5-electromagnetic flowmeter #2, 6 - Electromagnetic flowmeter #3, 7- Magnetic flowmeter #4, U1- Upstream control valve #1, U2- Upstream control valve #2, U3- Upstream control valve #3, U4- Upstream control valve #4 , D1-downstream side control valve #1, D2-downstream side control valve #2, D3-downstream side control valve #3, D4-downstream side control valve #4, R-red valve, B-blue valve, P- water pump.
[0053] Such as figure 2 In the surge chamber water flow combination working condition shown, taking the M4 working condition as an example, the water flow flows into the surge chamber from the ...
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The invention discloses a model experiment device and method for measuring the impedance coefficient of a surge chamber. The device comprises an upstream water tank, a downstream water tank, a water conduit, a surge chamber test section, a water outlet pipe, a water supply pipe, a drain pipe, a circulating water pump, a control valve and an electromagnetic flowmeter. The device is advantaged in that according to the conditions that the water flows into and out of the surge chamber test section, M1 to M14 surge chamber water flow combination working conditions are defined, the impedance coefficient measurement test of 14 kinds of water flows in and out of the surge chamber working conditions is achieved by controlling the opening and closing conditions of corresponding valves, and the device has advantages of being easy to operate and convenient and fast to convert the working conditions.
Description
technical field [0001] The invention belongs to the field of hydropower station engineering model experiments, in particular to a model experiment device and method for measuring the impedance coefficient of a surge chamber. Background technique [0002] In the calculation of the hydraulic transition process of the surge chamber system, especially the pumped storage power station, the working conditions change frequently, the flow state at the bottom of the surge chamber is complex, and there are many possible flow states. The selection of the impedance coefficient in the room is reasonable or not, which directly affects the reliability of the results. [0003] Obtaining the impedance coefficient of the surge chamber based on the model test and applying it to engineering practice is a method generally applicable to the construction of hydropower stations in various countries. At present, most of the existing model experimental devices are single-pipe single-machine systems,...
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IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 晏文杰杨建东段正刚叶佳伟杨威嘉马伟超
Owner WUHAN UNIV