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Runner cone pressure resistance test device of axial-flow Kaplan turbine and control method

A technology of pressure test device and water discharge cone, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, can solve the problems of low efficiency, low degree of automation, and threat to the seal of the runner, so as to ensure pressure stability, The effect of high degree of automation and convenient use

Active Publication Date: 2020-03-24
FUJIAN SHUIKOU POWER GENERATION GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conventional pressure-resistant system has a low degree of automation, and manual operation cannot guarantee the pressure fluctuation. Overpressure problems often occur, threatening the seal of the runner.
Human operations are frequent and inefficient

Method used

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  • Runner cone pressure resistance test device of axial-flow Kaplan turbine and control method
  • Runner cone pressure resistance test device of axial-flow Kaplan turbine and control method
  • Runner cone pressure resistance test device of axial-flow Kaplan turbine and control method

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Embodiment Construction

[0020] In order to make the features and advantages of this patent more obvious and easy to understand, the following special examples are described in detail as follows:

[0021] Such as figure 1 As shown, the device for the pressure test of the discharge cone designed in this implementation is mainly realized through the hydraulic system. The pressure monitoring point of the switch 5, the one-way throttle valve 6 and the pressure monitoring point of the second intelligent pressure switch 7 are connected to the water discharge cone of the runner body of the water turbine; the one-way throttle valve 6 faces one of the pressure monitoring points of the first intelligent pressure switch 5 The side pipeline is connected to the overflow valve 3; the side pipeline of the one-way throttle valve 6 facing the pressure monitoring point of the second intelligent pressure switch 7 is connected to the second one-way valve 8; the overflow valve 3 is connected to the second one-way valve 8 ...

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Abstract

The invention provides a runner cone pressure resistance test device of an axial-flow Kaplan turbine and a control method. The runner cone pressure resistance test device is characterized in that a hydraulic system pipeline connected with a turbine runner hub runner cone is provided with an overflow valve, a first intelligent pressure switch and a second intelligent pressure switch; the overflow valve is used for controlling the highest working pressure of a system; the first intelligent pressure switch is used for starting an oil pump when the system pressure is lower than a preset low pressure value; and the second intelligent pressure switch is used for closing the oil pump when the system pressure is higher than the preset high pressure value. The runner cone pressure resistance test device can guarantee the pressure stability of the runner cone in the pressure-resistant test process effectively, is convenient to use, is high in automation degree, and enables the efficiency to be greatly improved.

Description

technical field [0001] The invention belongs to the field of hydraulic turbine tests, and in particular relates to a pressure-resistant test device and a control method for a discharge cone of an axial-flow paddle-type hydraulic turbine. Background technique [0002] The axial flow paddle turbine relies on the hydraulic control system to simultaneously adjust the blade angle of the turbine and the opening of the guide vane, which can make full use of the energy of the water flow and has a wider range of high-efficiency zones. The blade angle adjustment of the water turbine relies on the blade operating mechanism inside the runner, which is powered by the hydraulic system. Therefore, the interior of the runner is filled with turbine oil. During the underwater operation of the water turbine, the external high-pressure water flow and the internal high-pressure oil must be completely isolated. Failure of the isolated seal can cause oil to leak and contaminate downstream water ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/02
CPCG01M3/02
Inventor 陈学仁林家洋魏名盛王昕倪思伟甘国文丁国建
Owner FUJIAN SHUIKOU POWER GENERATION GROUP
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