Axial-flow Kaplan turbine runner withstand voltage operation test system

Abstract

The invention relates to an axial-flow Kaplan turbine runner withstand voltage operation test system comprising an oil storage tank, a group communicating the oil storage tank with a runner hub and including a first pipe, a second pipe, a third pipe and a fourth pipe. The first pipe communicates with the lower port of a runner hub runner cone via a ninth valve. The second pipe communicates with the lower port of the runner hub runner cone via a third oil pump and a fifth valve successively. The third pipeline communicates with the open chamber and the closed chamber of a runner hub piston chamber via a third valve and a fourth valve respectively. The third valve and the fourth valve communicate with the one end of the first and second branch pipelines via the third pipeline. The first and second branch pipelines communicate with a first oil pump and a second oil pump. The other ends of the first and second branch pipelines are connected to the oil storage tank through a tenth valve. A fourth pipeline communicates with the open chamber and the closed chamber of the runner hub piston chamber via the first valve and the second valve respectively The first, second and third oil pumps are electrically connected with a PLC controller. The test system is simple and reliable in pipeline connection and convenient to control.

Description

technical field [0001] The invention relates to the field of hydraulic turbine tests, in particular to a pressure-resistant operation test system for an axial-flow paddle-type hydraulic turbine runner. Background technique [0002] The turbine of Shuikou Hydropower Station is an axial flow propeller turbine, model ZZ a 315-LJ-800, runner diameter: 8m, number of blades: 6 pieces, maximum working head: 57.8m, rated working head: 47.0m, minimum working head: 30.9m, rated flow: 478m 3 / s, rated output: 204MW, the first unit was put into commercial operation in August 1993, the runners of No. 1 and No. 2 units were manufactured by Hitachi, Japan, and the runners of No. 3-7 units were imported from Hitachi by Harbin Electric Machinery Factory Manufactured by the company's technology, all seven units were put into operation in December 1996. The hydroelectric generating units of Shuikou Hydropower Station started the first round of A-level maintenance at the end of 2000. Wheel pr...

AI Technical Summary

Problems solved by technology

[0006] The hydraulic turbine runner pressure resistance and operation test equipment of Shuikou Hydropower Station is provided by the original Hitachi company together with the group equipment. After many years of use, coupled with the poor storage of the original installation unit during the unit installation process, the test equipment has become a pipeline Leakage, internal leakage of the valve, and lax closure caused the pressure of the runner pressure test to be unmanageable, and the number of operation of the paddle switch per hour did not meet the requirements of the maintenance regulations. Therefore, a new test device must be redesigned.

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