Auxiliary machine cooling water system arranged at high position

Abstract

The invention discloses an auxiliary machine cooling water system arranged at a high position. According to the method, auxiliary machine equipment in a main workshop is arranged at 0 m to 65 m, and all the auxiliary machine equipment is cooled by a mechanical ventilating and dry-cooling tower. A high-position water tank is arranged at a 65 m layer, an auxiliary machine cooling water pump is arranged on a certain layer in the middle, and an auxiliary machine dry-cooling tower is arranged on an air-cooling platform in front of a steam engine room or the upper part of the steam engine room. An outlet of the auxiliary machine cooling water pump is successively connected with the high-position water tank, the auxiliary machine dry-cooling tower and an auxiliary machine equipment cooler along awater flow direction. By the arrangement, the design pressure of an auxiliary machine cooling equipment system is controlled at about 0.8 MPa, the design pressure of the system is reduced, the designpressure of the auxiliary machine cooling water pump is also reduced, auxiliary machine cooling water pipes of a factory are omitted, investment of whole equipment and system pipes is saved, and thesafety of running of the system is improved.

Description

technical field [0001] The invention belongs to the technical field of thermal power generation air cooling systems, and in particular relates to a cooling water system for auxiliary machines arranged at a high level. Background technique [0002] The main engine of the thermal power plant is cooled by a direct air-cooling system. When the steam turbine in the main workshop is arranged at a high position, the exhaust steam of the steam turbine is directly connected to the direct air-cooling system of the main engine, which saves the steam exhaust device of the steam turbine and shortens the exhaust pipeline, which has the advantages of reducing engineering investment and exhaust pipeline. Pressure drop, improving the operating economy and safety of direct air cooling units. This arrangement leads to the layered arrangement of auxiliary equipment in the main workshop, with auxiliary equipment on floors 0m to 65m. At present, when the conventional design adopts a set of dry c...

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Problems solved by technology

The design pressure of the equipment from the 0m floor to the 43m floor of the main factory building is about 1.3MPa, which leads to the high pressure level of the auxiliary equipment, auxiliary equipment dry cooling tower and auxiliary equipment cooling water pump on the 0m floor, and the equipment is non-standard products, which is difficult to purchase. Specializing in the production of such high-voltage equipment requires a large investment and increases the risk of system operation

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