A Method for Indirect Measurement of Fluid Temperature in Radiator Tube of Indirect Air Cooling System

Abstract

The invention discloses an indirect measurement method for measuring the temperature of fluid in a radiator pipe of an indirect air-cooling system, and belongs to the technical field of indirect air-cooling system radiator equipment. The method comprises the following steps: a, obtaining correlated temperature parameters; b, substituting the obtained correlated temperature parameters into a fitting formula (shown in the description), and calculating the temperature of the fluid in an indirect condenser radiator pipe, wherein y is the temperature of water in the indirect condenser radiator pipe, x1 is the environment temperature of an indirect condenser, x2 is the relative temperature of the environment of the indirect condenser, x3 is the temperature of the wall of the indirect condenser radiator pipe, x4 is the environment wind speed of the indirect condenser, and x5 is the flowing speed of water in the indirect condenser radiator pipe. The method can solve a problem of pipe bundle cold injury indirectly and effectively, can achieve the more effective analysis of the operation data of a unit, and provides a more economical and efficient scheme and guide for the operation of the unit.

Description

technical field [0001] The invention relates to the technical field of radiator equipment for indirect air cooling systems. Background technique [0002] North China is rich in coal reserves, but it faces very severe water resources problems. The traditional wet-cooled thermal power generation units can no longer meet the requirements of water saving and sustainable development in this area. Air-cooled thermal power generating units have become the mainstream of power plant construction in the northern region due to their water-saving and environmental protection advantages. However, in recent years, air-cooled units put into operation frequently have radiator freezing accidents, which have brought great hidden dangers to safe production. How to solve the winter freezing problem of radiators has become an important problem. [0003] The closed cooling water of the indirect air cooling system is mainly cooled by the radiator at the bottom of the air cooling tower. The indire...

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Problems solved by technology

However, due to the thin heat sink and poor anti-freezing ability, once a local leak occurs, the accident will rapidly expand, causing the entire radiator to be frozen, which not only reduces the cooling effect of the system, but also causes damage to the radiator; The repair process of the device is complicated and takes a long time, and it cannot be repaired in winter. Once an accident occurs, the direct and indirect economic losses will be very large

[0004] At present, the operation and maintenance and antifreeze of most intercooling systems still rely on the intensive monitoring of personnel and some operating experience to prevent freezing. In many cases, in order to protect the equipment, it is necessary to close the shutters in advance, which brings uneconomical operation and consumes more energy

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