Fatigue life design can be seen from the failure type and cause analysis of the bellows compensator. The plane stability, circumferential stability and corrosion resistance of the bellows are related to the displacement amount, ie the fatigue life. Too low fatigue life will result in a decrease in bellows stability and corrosion resistance. According to the test and experience, the fatigue life of the bellows used for heating engineering should be no less than 1000 times. The bellows cannot bear the weight and should be hoisted separately; except for the pre-deformation amount of pre-tensioning or cold-tight design, it is strictly forbidden to adjust the installation deviation of the pipe by the method of deforming the bellows; the installation process does not allow the welding slag to splash onto the surface of the bellows And subject to other mechanical damage; all moving elements of the bellows must not be stuck by external components or limit the active parts of their active parts. The failure of most bellows is caused by corrosion of the external environment. Therefore, when designing the structure of the compensator, it is considered to isolate the contact between the external corrosive medium and the bellows. For example, for the external pressure axial type compensator, a packing sealing device can be added between the outlet end ring and the outlet pipe, and the function is equivalent to the sleeve compensator, which can resist the invasion of the external corrosive medium and add a new one to the bellows compensator. The safety barrier, even if the bellows breaks, the compensator can also compensate and avoid the bellows failure. The compensator has a metal compensator and a non-metallic compensator. Depending on the application of the medium, it can also be divided into a professional anti-corrosion compensator and a high-temperature compensator. Tempered Glass Mirror,Stained Glass,Teleprompter Glass,Colored Aluminium Mirror SHANDONG TOP LEADER GLASS CO.,LTD , https://www.topleaderglass.com