Real-time alarm method and system for working condition of hydraulic turbine top cover bolts

Abstract

The invention discloses a real-time alarm method for the working condition of the bolts on the top cover of a hydraulic turbine, which includes collecting bolt parameters, initial pre-tightening force, the historical healthy stress range of the bolts under the start-up condition and the historical healthy stress range of the bolts under the shutdown condition; according to the bolt parameters and The historical health stress range of bolts under start-up conditions calculates several alarm thresholds under start-up conditions; calculates several alarm thresholds under shutdown conditions based on bolt parameters, initial pre-tightening force, and the historical healthy stress range of bolts under shutdown conditions; collects real-time conditions and bolt real-time stress; determine the alarm threshold interval under the corresponding working condition of the bolt real-time stress, and issue preset alarm information corresponding to the alarm threshold interval. At the same time, the corresponding system is disclosed. The present invention calculates different alarm thresholds according to different working conditions, and sends out corresponding preset alarm information according to the alarm threshold range of the real-time stress, thereby realizing real-time alarming of bolt working conditions and ensuring the operation safety of the top cover of the hydraulic turbine and the unit.

Description

Technical field [0001] The present invention relates to a real-time alarm method and system for a turbine top cover bolt condition, which belongs to the field of equipment status monitoring and fault diagnosis. Background technique [0002] In the hydropower industry, the top cover of the hydropower unit is connected by bolt. If the stud is not tightened in accordance with the preload force of the design, the stud is gradually loose, which will cause the stud to produce fatigue cracks and fatigue breaks, affecting the hydropower unit. Safe stability; therefore there is a need for a alarm to the alarm of the stespoleum roof bolt condition. Inventive content [0003] The present invention provides a real-time alarm method and system for a turbine top cover bolt condition, and solves the problem of disclosure in the background. [0004] In order to solve the above technical problems, the technical solution used in the present invention is: [0005] Turbine top cover bolt condition ...

AI Technical Summary

Problems solved by technology

[0002] In the hydropower industry, the top cover of the turbine of the hydroelectric unit is connected by bolts. If the studs are not tightened according to the designed pre-tightening force, the studs will gradually loosen, which will lead to fatigue cracks and fatigue fractures of the studs, which will affect the performance of the hydroelectric unit. Safe and stable; therefore, a method for alarming the working conditions of the turbine roof bolts is needed in the hydropower system

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