Hot well liquid level control system for steam condenser

Abstract

The invention provides a hot well liquid level control system for a steam condenser, relates to the technical field of the steam condenser, and solves the technical problem that the hot well liquid level control system is not energy-saving under the starting or low-load working condition of a steam turbine in the prior art. The hot well liquid level control system for the steam condenser comprisesa liquid level transmitter, a central control chamber DCSand a frequency converter, wherein the liquid level transmitter is connected with a hot well at the lower part of the steam condenser and usedfor detecting hot well liquid level change and transmitting detected liquid level rising or dropping signals to the central control chamberDCS, meanwhile, the liquid level rising or dropping signalsare fed back to the frequency converter by the central control chamberDCS, and the frequency converter controls frequency of a motor according to the liquid level rising or dropping signals. Accordingto the system, redundant condensed water at an outlet of a condensate pump is not required to flow back to the hot well through a recirculation pipe, flow of a condensate main pipe is not required tobe regulated by a regulating valve, the hot well liquid level can be controlled only by a variable frequency water pump, so that energy is saved, and the cost is also reduced.

Description

technical field [0001] The invention relates to the technical field of condensers, in particular to a liquid level control system for hot wells of condensers. Background technique [0002] The hot well is a water collection well that collects condensed water in the lower part of the condenser. The full name is "condenser hot well", commonly known as "hot water well". An upright cylindrical component installed at the bottom of the surface condenser of a steam turbine to collect the main condensed water generated by the continuous condensation of a large amount of exhaust steam. It is called a hot well because it looks like a water well. [0003] Steam turbine is a rotating power equipment that uses the internal energy of steam to do work through turbine stage expansion to drive generators, pumps, fans and compressors, etc. It is widely used in power plants, steel, petrochemical and other fields. The exhaust steam of the condensing steam turbine is condensed into water after ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a condenser hot well liquid level control system to solve the technical problem in the prior art that the hot well liquid level control system does not save energy when the steam turbine is started or under low load conditions

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