Analysis of the reasons why the switch of the clamp type fluorine lined butterfly valve is not smooth when replacing the large valve for the merchant

The unsmooth opening and closing of the cracking gas valve is a safety hazard during the long-term operation of ethylene plants. Many ethylene plants of Sinopec have adopted parallel double gate valves produced by Z&J. From the usage situation, it can be seen that many ethylene plants (such as Maoming, Qilu, Yangzi, Yanshan) have the problem of unsmooth opening and closing of the valve. It is understood that there is a large amount of cracking gas in ethylene plants abroad Fluorine lined DC globe valve There are also similar issues with difficulty switching. The use, installation, and maintenance of cracking gas valves are closely related. For Z&J valves, they are large in size (with a cracking gas valve weighing several tons or even more than ten tons) and have different structures. In addition, the diameter of the cracking gas pipelines connected to them is often over 1 meter, PTFE lined valve And the operating temperature is high, so the installation of the cracking gas valve requires no stress, check valve And the thermal stress situation of the cracking gas valve and its related pipelines should be considered.

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