Dry indirect-cooling-storage type peak cooling system of thermal power generating unit

Abstract

The invention discloses a dry indirect-cooling-storage type peak cooling system of a thermal power generating unit. The dry indirect-cooling-storage type peak cooling system comprises a turbine low pressure cylinder, wherein the lower end of the turbine low pressure cylinder is connected with an exhaust steam pipe matched with the turbine low pressure cylinder, the exhaust steam pipe is connected with a jet-type condenser through a butterfly control valve and is connected with a condensing water tank through a condensing water pump, and another end of the exhaust steam pipe is connected with an air cooled condenser; the exhaust steam pipe is provided with a stem dispensing pipeline of the air cooled condenser on which a cooling and mixing device is arranged; the cooling and mixing device comprises a cooling water delivery pipeline and a plurality of cooling water nozzles formed in the cooling water delivery pipeline, the air cooled condenser is connected with a circulating water collecting tank through a condensed water tank, and the circulating water collecting tank is connected in a cooling chamber in the cooling system through a water taking pump; the cooling chamber is respectively connected with a dry air forced ventilation cooling system and a voltage compression refrigerating system, the cooling chamber is connected with the jet-type condenser through the circulating water collecting tank, and the air cooled condenser is connected to a water circulating vacuum pump in an air extractor and is sequentially connected with a gas water separator and a cooler; one end of the cooler is connected with a cooling chamber, and the other end of the cooler is connected with a circulating water collection tank.

Description

technical field [0001] The invention relates to the technical field of thermodynamic cycles, in particular to a dry-type indirect cold storage type peak cooling system for a thermal power unit. Background technique [0002] With the steady and rapid development of my country's economy, the demand for energy consumption in the whole society is gradually expanding, and the demand for electric energy in the manufacturing industry dominated by light and heavy industries is increasing day by day. The pressure of economic transformation has also made the original south of the developed areas of the manufacturing industry gradually complete the transfer to the north's new and old industrial areas, and the extension of the manufacturing industry chain. In order to ensure the successful transfer of industrial enterprises from south to north and provide sufficient energy support, the northern region has vigorously developed the power industry since 2000, especially in Shanxi, Inner Mo...

AI Technical Summary

Problems solved by technology

In actual operation, direct air-cooled thermal power units will have high back pressure and frequent fluctuations in summer, and the vacuum can reach 40kPa, which will have a great negative impact on the stable operation and economy of the unit

The current solution is mainly to increase the area of ​​the original direct air cooling tower and the wet peak cooler. The cost of adding a direct air cooling tower is high and cannot solve the problem of vacuum fluctuations. Although the cost of the wet peak cooler is slightly lower, it is in operation. It needs to consume a lot of water resources to achieve the purpose of reducing back pressure, and the external spray cooler consumes a lot of demineralized water, which is contrary to the original intention of water saving in establishing a direct air cooling unit

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