Condenser and Condenser Repair and Leak Checking Method

Abstract

A condenser and a method for inspecting and leaking the condenser. When inspecting and inspecting for leaks, the condensed water and cooling water of the condenser are emptied, and a vacuum is formed in the heat exchange chamber and the heat exchange tube, and then the first control valve is closed. The second control valve, cooling water outlet, cooling water inlet and all inlets and outlets of the condenser, enter the cooling water from the steam inlet tank, fill the entire shell and the steam inlet chamber, check the shell wall, thermal If water seeps out from the wall of the exchange pipe and all accessory equipment, mark the position of the seeped water. If there is no water seeped out, there is no leak, and the inspection and leak check should be completed. Open the second control valve, the vacuum breaking door interface at the steam inlet chamber, the cooling water inlet and the cooling water outlet, the cooling water in the heat exchange chamber of the condenser and the steam inlet chamber enters the heat exchange tube through the second valve, And further return to the cooling water storage tank at the bottom of the intermediate cooling tower through the cooling water outlet, and complete the recovery and utilization of leakage water for inspection and maintenance.

Description

technical field [0001] The invention relates to a condenser, in particular to a condenser and a method for checking and leaking the condenser. Background technique [0002] Large-scale thermal power plants use condensers to cool the steam output from the steam turbine to form condensed water, which is returned to the boiler after the condensed water pump for recycling. However, after the condenser has been used for a period of time, it is necessary to clean the heat exchange tubes and exchange chambers in the condenser, and check whether the cleaned heat exchange tubes and heat exchange chambers are damaged and leaked, and whether the vacuum system of the entire condenser is There is a leakage situation for maintenance. The current method for maintenance and leak detection is to use special chemical liquid (such as ammonia water) to check for leaks by using the special smell that ammonia water volatilizes, which is convenient for maintenance. After using chemical medicine t...

AI Technical Summary

Problems solved by technology

After using chemical medicine to check for leaks, clean water will be used for cleaning, but after cleaning, the cleaning water and chemical medicine are directly discharged through the condensate outlet of the condenser, and a separate discharge pipe needs to be set up for the direct discharge process. According to Now the entire plant layout, the discharge pipeline needs to pass through the B column of the turbine room, 1#-2# boiler room, and the electrostatic precipitator area, which has the problems of high cost, waste of water resources, and environmental pollution

Images