Device for measuring bearing shoe temperature of power plant steam turbine with purpose of solving lead oil leakage problem

Abstract

The invention relates to a device for measuring the bearing shoe temperature of a power plant steam turbine with the purpose of solving a lead oil leakage problem. An element lead is sequentially connected by a first flexible wire, a lead armor rod and a second flexible wire. A wiring end is connected to one end of the first flexible wire, and a spring pressing sheet, a spring and a temperature measuring element are connected to one end of the second flexible wire. A seal device is sleeved on the lead armor rod, the seal device consists of a base, a pressing cap and a seal plug, the seal plug is sleeved and fixed on the lead armor rod, the base is sleeved outside the seal plug and the lead armor rod, the pressing cap is sleeved outside the lead armor rod, the pressing cap is connected with the base, the pressing cap is in tight contact with the seal plug, and the base is in tight contact with the seal plug. Not only is the oil leakage problem of the bearing shoe temperature measuring element lead of the power plant steam turbine solved by the device, but also the device is reliable in performance and convenient in installation. Meanwhile, the damage of a traditional leakage treatment method to the element lead is eliminated, and the bearing shoe temperature protection reliability of the steam turbine is improved, so that a generator set can safely and stably run.

Description

technical field [0001] The invention relates to a measuring device for the tile temperature of a steam turbine in a power plant which solves the oil seepage problem of a lead wire. Background technique [0002] At present, the steam turbine tile temperature measurement element adopts end thermocouple or thermal resistance, and the lead wire of the element is a multi-strand flexible wire with insulation and protective layer, such as figure 1 shown. The lead wires of the components are led out to the terminal box outside the steam turbine through the threading hole of the bearing box. The bearing box is filled with lubricating oil. In order to prevent the lubricating oil from leaking through the threading hole, rubber plugs and sealants are generally used for sealing. But, in practical application, lubricating oil leaks outwards along the gap of lead wire insulation skin and multi-strand flexible wire; If two lead wires are to be drawn out from one threading hole, the sealing...

AI Technical Summary

Problems solved by technology

However, in practical application, the lubricating oil leaks outward along the gap between the lead wire insulation skin and the multi-strand flexible wire; if two lead wires are drawn out from one threading hole, the sealing is more difficult to handle and the leakage is more serious

Oil leakage not only pollutes the environment, but also poses a fire hazard

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