1 Fault cause analysis 1.1 As shown in Figure 1, the gasket at the cylinder joint is large. Because the sealing area of ​​the cylinder joint is large, the sealing surface is not easy to be pressed during assembly, and helium is easily generated.
Ingeniously, each of the 1.2 1.2s needs to use a scraper and an abrasive cloth to remove the residual mat on the sealing surface, and the sealing surface between the cylinder and the water jacket is relatively small. The sealing surface of the inner ring of the water jacket is usually low inside and low, which causes helium in the cooling water.
2 Failure analysis and treatment method 2.1 The vertical sealing surface of the cylinder is leveled by a vertical lathe.
Turning conditions and characteristics: When turning and adding kings, the benchmark is not easy to level.
After turning, the size of the cylinder is changed. When assembling, the gap between the joints needs to be re-adjusted, and the workload during assembly is added.
The processing cycle is long, the processing is difficult, the processing cost is high, and some units have no king conditions.
2.2 Change the outer ring of the gasket to a small size. Figure 2, you can reach the contact person: Chen Shaowei Wang Chengshi Sijiang Oil Cry 1704 Sitou Changgang Co., Ltd. production area power workshop 1 mountain 08 3647206 ideal effect.
Turning conditions and characteristics: The improved mat's contact area on the sealing surface is reduced, and only a small tightening force can be used in assembly to achieve a better sealing effect.
After the gasket is changed to a small size, the gasket can be completely contacted with the lower part of the cylinder sealing surface, which can make up for the defect that the sealing surface is low and high in the unevenness.
The gasket is simple to make, the production time is short, and the cost of other auxiliary equipment is not low.
3 Improved stress test 3.1 Improvement of the area of ​​the front gasket without considering the screw holes and water channels, called 2 Tan], the area of ​​the improved gasket is not considered in the case of water: 2: Civilian 5 2 兀 [Qiao 5, 3.3 set the sealing force required before the improvement of the seal is F, the required tightening force for the entry is 2.
According to the calculation of the above formula, after the gasket is improved, it is only necessary to use the force of about 2 before the improvement to achieve the original sealing effect.
Note: After the outer circle of the gasket is changed to small, the nut should be symmetrically and evenly assembled during the assembly. Otherwise, the deflection is easy to occur and the sealing is not strict.
4 Conclusion 5L16/washing air compressor is a kind of piston type cloud air compressor. After a long time of use, the connection between the cylinder and the water jacket is not tight, resulting in equipment failure or even accident. Therefore, we have taken certain measures and taken measures. The feasibility was calculated for the calculation.
The outer ring of the gasket is reduced, and the contact area of ​​the mat on the sealing surface is changed; the force analysis confirms the rationality and feasibility of the improvement; the improved gasket has low manufacturing cost and is easy to install, and the machine operation achieves the desired effect.
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