Real-time alarm method and system for working condition of hydraulic turbine top cover bolts
A hydraulic turbine and bolt technology is applied in the field of real-time alarming of working conditions of hydraulic turbine roof bolts, which can solve problems such as fatigue cracks and fatigue fractures of studs, affecting the safety and stability of hydropower units, and achieve the effect of simple use and safe operation.
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[0047] The present invention will be further described below with reference to the accompanying drawings. The following examples are for more clearly explaining the technical solutions of the present invention without limiting the scope of the invention.
[0048] Such as figure 1 As shown, the turbine top cover bolt condition real-time alarm method, including the following steps:
[0049] Step 1, collect bolt parameters, initial pretensioning force, bolt historical health stress, and the scope of bolt historical health stress under stop conditions.
[0050] Bolt parameters and initial pretensions can be obtained by accessing equipment data, with bolt parameters including the smallest diameter and yield strength of bolts.
[0051] Collect bolts monitor historical health stress data, specifically for bolts after the initial installation or maintenance is installed, the stable operation is about three months of historical data in three months, among which, the upper and lower limits ...
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