Water cooling system of thermal power plant

Abstract

The invention discloses a water cooling system for a thermal power plant. The water cooling system comprises a steam turbine generator unit and a first cooling water pump which is connected with a motor. A water inlet of the first cooling water pump is connected with a first circulating water pipe through a pipeline. A water outlet is connected with a plurality of user devices needing to be cooled through pipelines. Electric isolating valves are arranged on the pipeline of the water inlet end and the pipelines of the water outlet end of the first cooling water pump respectively. The user devices are connected with a second circulating water pipe which is connected with the first circulating water pipe through a pipeline. Isolating valves are arranged on the pipelines of the front end and the rear end of each user device respectively. A second cooling water pump is arranged between the first circulating water pipe and the user devices. The second cooling water pump is connected with an output shaft of the steam turbine generator unit. Electric isolating valves are arranged on a pipeline of the water inlet end and pipelines of the water outlet end of the second cooling water pump respectively. As a steam turbine is adopted for driving, operation is reliable, operation economy is good, safety is high, use efficiency of the system is improved, space is saved, and the water cooling system is convenient to assemble and disassemble.

Description

technical field [0001] The invention relates to the technical field of thermal power equipment, and relates to a cooling water system of a thermal power plant which operates by using a steam turbine to drive the cooling water system. Background technique [0002] The rotating equipment in thermal power plants will generate heat during operation. In order to ensure the safe and reliable operation of the equipment, cooling water is required to cool the operating equipment. In the prior art, a set of motor-driven cooling water systems is usually set up to provide cooling water sources for each equipment user; in order to ensure the stability and safety of the cooling water system, a set of cooling water systems needs to be equipped with two sets of motor-driven 100% capacity Cooling water pump equipment, one is running and the other is standby. The defect of the cooling system in the prior art is that, since the cooling water system runs uninterruptedly in random groups, the u...

AI Technical Summary

Problems solved by technology

The defect of the cooling system in the prior art is that, since the cooling water system runs uninterruptedly in random groups, the use of electric motors will consume a lot of factory power; and considering the safety of the unit operation, it is necessary to configure 100% capacity backup equipment, It is easy to cause idle equipment and increase the workload of power plant operation and maintenance

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