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Real-time alarm method and system for working condition of hydraulic turbine top cover bolts in pumped storage power station

A pumped-storage power station, turbine technology, used in alarms, instruments, etc.

Active Publication Date: 2021-04-20
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a real-time alarm method and system for the working condition of the top cover screw of a pumped storage power station, which solves the problems disclosed in the background technology

Method used

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  • Real-time alarm method and system for working condition of hydraulic turbine top cover bolts in pumped storage power station

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0045] like figure 1 As shown, the real-time alarm method for the working condition of the top cover screw of the pumped storage power station includes the following steps:

[0046] Step 1. Collect historical bolt monitoring health data, bolt parameters and initial preload.

[0047] Among them, the bolt parameters and initial pretightening force can be obtained by consulting the equipment data. The bolt parameters include the minimum diameter and yield strength of the bolts; the historical health data of the bolt monitoring is that the bolts have been in stable operation for about three months after the initial installation or maintenance installation. historical data.

[0048] Step 2, extrac...

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Abstract

The invention discloses a real-time alarm method and system for the working condition of the top cover screw of a pumped storage power station. The invention divides the threshold intervals under different working conditions according to the historical health data, and sends out the corresponding alarm threshold interval according to the real-time stress. The preset alarm information realizes the real-time alarm of the working condition of the bolts and ensures the operation safety of the turbine roof and the unit.

Description

technical field [0001] The invention relates to a real-time alarm method and system for the working condition of the top cover screw of a pumped storage power station, and belongs to the field of equipment state monitoring and fault diagnosis. Background technique [0002] In the hydropower industry, the top cover of the turbine in the pumped storage power station is connected by bolts. If the studs are not tightened according to the designed pre-tightening force, the studs will gradually loosen, which will cause fatigue cracks and fatigue fractures in the studs, which will affect the pumped storage capacity. The safety and stability of the hydro turbine in the power station; therefore, a method for alarming the working condition of the top cover bolts of the pumped storage power station is needed in the hydropower system. Contents of the invention [0003] The invention provides a real-time alarm method and system for the working condition of the top cover screw of a pump...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B21/18
CPCG08B21/182
Inventor 张法葛新峰王宁宁郑圣义杨瑒徐旭刘磊孙嘉刘驰
Owner STATE GRID CORP OF CHINA
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