Method for finding leak source of copper tube leakage of condenser in power plant

Abstract

The invention belongs to a leaking finding and leaking stoppage overhaul method of a condenser in the production field of electricity generation, and relates to a method for finding a leak source of copper tube leakage of a condenser in a power plant. When leakage occurs, the load is reduced to 80 percent of the rated load, half side of the condenser stops operating, and a leakage side can be judged according to the index conditions, such as sodion content, electric conductivity, hardness and the like. After the leakage side is found, small doors at the two ends of the half side are opened to discharge the accumulated water. The orifice of the copper tube is closed off by using preservative film at one side of the condenser, and the tubes are checked one by one by using candle flame at the other side of the condenser. Since the tube with leakage has vacuum leakage, when reaching the leakage tube, the flame can obviously shift towards the inside of the tube without interference of external wind power. The found copper tube is plugged at two ends so that full-load operation can be recovered quickly. The invention can be realized without halt, thereby avoiding generated energy loss caused by halt, reducing gas diffusing for the power plant with comprehensive gas utilization, and avoiding energy source waste and environment pollution.

Description

technical field [0001] The invention belongs to the field of power generation production, and relates to a method for checking and plugging leaks of condensers, in particular to a method for finding leaks of copper tubes of condensers in power plants. Background technique [0002] When the copper pipe of the electric condenser leaks, the traditional method is to stop the machine and search for it by filling water. Irrigate with water, check that there is water leaking from both ends of the copper pipe, which is the leaking pipe, and then seal both ends. However, this operation method takes a long time, and the unit needs to be shut down for at least 24 hours. For the unit with comprehensive gas utilization, not only the power generation will be lost, (12MW unit will lose 288,000 kWh in 24 hours, and 50MW unit will lose 1.2 million kWh in 24 hours ) also causes a large amount of gas to be released, wastes energy and seriously pollutes the environment. Contents of the inven...

AI Technical Summary

Problems solved by technology

However, this operation method takes a long time, and the unit needs to be shut down for at least 24 hours. For the unit with comprehensive gas utilization, not only the power generation will be lost, (12MW unit will lose 288,000 kWh in 24 hours, and 50MW unit will lose 1.2 million kWh in 24 hours ) also causes a large amount of gas to be released, wastes energy and seriously pollutes the environment