About boiler header water pressure test solution
If hydraulic tools are used, the weight is large, the operation is difficult, the versatility is poor, and the manufacturing cost is high. The form of the hydraulic end cap is difficult to determine. The hydraulic cap welding work is large, and the thin-walled base metal is easily deformed after welding. Manufacturing cost and production cycle problem The water pressure of the header should be increased and increased in the manufacturing cycle and manufacturing cost, which will inevitably affect the production organization. The water pressure of the subcritical boiler header will increase the manufacturing period of the header by about 1/3. The subcritical boiler header hydraulic pressure test solution, the small pipe joint sealing problem, the box pipe joint specifications are many, it is impossible to use the water pressure expansion plug for water pressure, the corresponding welding water pressure cover has a large workload, and the pipe joints are It is very long and has a large number of elbows, which brings great difficulties to the water inflow and exhaust. The method of spinning the pipe joint by the spinning machine can reduce the amount of welding work. Before the spinning machine is put into production, the length of the box and the small pipe joint adopt the method of welding water gland. In order to solve the problem of exhaust, we put the long pipe joint box horizontally, so that the gas in the pipe joint can be easily discharged. Large Pipe Joint Sealing Problem The location of the large pipe joints on the subcritical boiler headers is generally not in one quadrant with the small pipe joints and tees. Therefore, the water pressure ring is welded on the pipe joint, and then the outer pull type water pressure expansion plug is used to press, which eliminates the work of chamfering. For the shorter headers of the small pipe joints, the method of welding the water end caps can also be used. The sealing problem of the tee, elbow and open header on the header box is 30100 MPa due to the water pressure test pressure of the subcritical boiler header, and the axial force of the inner diameter of 5200697 mm is 901042t. The form of the seal presents the requirements. Electric vehicles are the development direction of future transportation vehicles, which have the characteristics of environmental protection and low-carbon, and can reduce exhaust emissions and environmental pollution. Electric Mini Car,Pure Electric Small Car,Mini Electric Vehicle,Pure Electric Vehicle Chongqing Huanyu Automobile Sales Company , https://www.cqhuanyuauto.com
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