Dry-wet unified cooling tower adopting natural ventilation and composite running mode and application of dry-wet unified cooling tower

Abstract

The invention belongs to the technical field of energy utilization and engineering thermophysics, and particularly relates to a dry-wet unified cooling tower adopting a natural ventilation and composite running mode and application of the dry-wet unified cooling tower. The dry-wet unified cooling tower comprises a tower body, a supporting structure, a dry cooling section, a wet cooling section and a flow distribution system; a dual-curve manner is adopted in the tower body, and the tower body is supported to the ground through a supporting structure; the dry cooling section and the wet cooling section are integrally distributed in one cooling tower in the vertical direction; the dry cooling section is located above the wet cooling section; the dry cooling section comprises a cooling triangle and a dry cooling section louver; the wet cooling section comprises a water removing device, a water distribution system, a padding area, a water collecting pool and a wet cooling section louver; and the flow distribution system comprises a total inlet and outlet pipe, a dry cooling section inlet and outlet pipe, a wet cooling section inlet and outlet pipe, a valve and a circulating pump. According to the dry-wet unified cooling tower and application, wasted work of a draught fan is not needed, the cooling efficiency is high, the lower tower exiting water temperature can be provided, and water resources are saved.

Description

technical field [0001] The invention belongs to the technical field of energy utilization and engineering thermophysics, and specifically relates to a dry-wet combined cooling tower adopting natural ventilation and combined operation mode and its application. Background technique [0002] In the fields of energy, electric power, chemical industry, steel, pharmaceuticals, etc., there are many production links that must be cooled in time to ensure continuous and stable operation of the production process. [0003] Taking thermal power generation as an example, cooling the exhaust steam of the steam turbine into condensed water is not only a crucial process in the steam power cycle, but also the effect of cooling (cooling rate, heat release temperature) will also affect the efficiency of the power cycle. Good cooling can improve the energy utilization rate of thermal power generation and realize energy saving and emission reduction in power production. [0004] Traditional the...

AI Technical Summary

Problems solved by technology

In the Harmon-type indirect cooling system, the circulating cooling water needs to undergo two heat exchanges, and the heat transfer effect is poor. Under the same design temperature conditions, the back pressure of the steam turbine is high, and the unit economy is low.

The Heller-type indirect cooling system uses a hybrid condenser, and there are many equipments, the system is complex, and a large amount of refined water is required, and the cost of water treatment is high

In summer, when the dry bulb temperature of the ambient air is high, the heat transfer temperature difference between the above three air cooling systems and the ambient air decreases, resulting in an increase in the back pressure of the steam turbine in the power plant and a decrease in the unit economy

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