The heating surface tube in the gas boiler accessories is the main equipment of the chain grate boiler, so its inspection and maintenance can also be said to be an important thing. This time, the editor will introduce to you how to inspect and repair the heating surface tube in the gas boiler accessories.
1. Thoroughly check the appearance of the heating surface tube, repair the external problems of the pipeline, seriously reduce the wall thickness of the pipeline, and must resolutely and thoroughly replace it. It is not allowed to bring hidden dangers into the project and bring hidden dangers into operation;
2. The flattening of the pipe mouth or the deformation of the pipe should be corrected. The flattening or damage of the pipe mouth cannot be corrected and repaired. Replace it. The deformation of the pipe should be laid out according to the actual size. A calibration platform should be designed and made according to the size of the drawing, and the snake-shaped bends should be corrected one by one;
3. When the heating surface pipe is connected, the oxide scale, rust, oil stains, etc. at the weld should be thoroughly cleaned. The pipeline should be strictly beveled, and the metallic luster should be polished within 15mm of the bevel. There should be no hair on the bevel and blunt edge. thorn;
4. All pipe sections whose wall thickness is reduced due to corrosion and exceeds the requirements of the specification should be replaced. For places where problems cannot be solved after installation, a water pressure test should be carried out before the pipe group is assembled. The test pressure is 1.5 times the working pressure of the pipe at that place, or a non-destructive flaw detection inspection should be carried out;
5. The pipe should be tested for ball passing. The ball diameter should be in accordance with the requirements of the specification. Before passing the ball, the pipe should be purged with compressed air for 1 to 2 minutes to blow away the accumulated water or floating rust in the pipe, and then the ball should be passed. The pipe passing should be carried out one by one, and each ball should be numbered separately to prevent the ball from falling into the pipe. The pipe sections with problems during the passing should be thoroughly checked and analyzed, and the pipe sections that cannot be repaired should be replaced.
The heating surface tube in the gas boiler accessories is the main equipment of the chain grate boiler, so its inspection and maintenance can also be said to be an important thing. This time, the editor will introduce to you how to inspect and repair the heating surface tube in the gas boiler accessories.
1. Thoroughly check the appearance of the heating surface tube, repair the external problems of the pipeline, seriously reduce the wall thickness of the pipeline, and must resolutely and thoroughly replace it. It is not allowed to bring hidden dangers into the project and bring hidden dangers into operation;
2. The flattening of the pipe mouth or the deformation of the pipe should be corrected. The flattening or damage of the pipe mouth cannot be corrected and repaired. Replace it. The deformation of the pipe should be laid out according to the actual size. A calibration platform should be designed and made according to the size of the drawing, and the snake-shaped bends should be corrected one by one;
3. When the heating surface pipe is connected, the oxide scale, rust, oil stains, etc. at the weld should be thoroughly cleaned. The pipeline should be strictly beveled, and the metallic luster should be polished within 15mm of the bevel. There should be no hair on the bevel and blunt edge. thorn;
4. All pipe sections whose wall thickness is reduced due to corrosion and exceeds the requirements of the specification should be replaced. For places where problems cannot be solved after installation, a water pressure test should be carried out before the pipe group is assembled. The test pressure is 1.5 times the working pressure of the pipe at that place, or a non-destructive flaw detection inspection should be carried out;
5. The pipe should be tested for ball passing. The ball diameter should be in accordance with the requirements of the specification. Before passing the ball, the pipe should be purged with compressed air for 1 to 2 minutes to blow away the accumulated water or floating rust in the pipe, and then the ball should be passed. The pipe passing should be carried out one by one, and each ball should be numbered separately to prevent the ball from falling into the pipe. The pipe sections with problems during the passing should be thoroughly checked and analyzed, and the pipe sections that cannot be repaired should be replaced.