Guide: In view of the water leakage of the condensing gas boiler, different measures should be taken according to the actual situation. Generally speaking, there are several aspects of boiler water leakage:
In view of the water leakage of the condensing gas boiler, different measures should be taken according to the actual situation. Generally speaking, there are several aspects of boiler water leakage:
1. Water leakage on the inner wall: Water leakage on the inner wall is also divided into drum leakage, water cooling and downcomer leakage. If the former has a relatively small leak, the same steel grade can be excavated and repaired, and then the flaw detection can be performed after the excavation. If the water leaks from the front to the back, the pipe needs to be replaced, and the larger area is replaced.
2. Water leakage in the hand hole: try to install it again by changing the angle to see if the hand hole cover is deformed. If there is any deformation, correct it first, and then wrap the mat evenly with raw tape. It is best to keep the same position as before the overhaul.
3. Water leakage in the drum: The cost of repairing is high. It mainly depends on the location of the leak and the size of the leak. If the condensing gas boiler is leaking red pot water, it means that there is a problem with the water quality, which may be due to low alkalinity or water. Metal corrosion caused by excessively high dissolved oxygen. If the alkalinity is low, sodium hydroxide or trisodium phosphate can be added to the pot water. The metal corrosion caused by too high dissolved oxygen in the water. If the alkalinity is low, add sodium hydroxide or trisodium phosphate to the pot water. If the dissolved oxygen in the water is too high, it must be solved by a deaerator.
Fourth, the water treatment system leaks: first check whether the condensing gas boiler is corroded, if the boiler corrodes, you need to remove the scale first, repair the leaking part, and then treat the circulating water, add chemicals, and perform corrosion and scale inhibition on the boiler and other equipment materials. protection.
5. Water leakage in the boiler flue: first check if it is caused by boiler tube burst or tube plate cracks. If you need to change the tube or dig and repair the material used in the flue, aluminum and stainless steel materials can be argon welded with aluminum wire or carbon steel, iron The material can be directly acid electrode.
Six. Valve leakage: Leaking valves should be packed or replaced with new valves.
For the above method, if the condensing gas boiler leaks after welding, will it end? Do not! Have to continue the test to know. After the welding is completed, the water is filled with a water pump, and the water pressure on the boiler side reaches the pressure at work, then close the water inlet of the boiler to check for leaks. When there is water shortage in the boiler, it will display the open type. After water shortage, the boiler will be started normally when the water supply valve is opened. This shows that the water leakage problem of the condensing gas boiler is really solved.