In the field of industrial process control, multi-turn valve interlocking plays a vital role. They ensure the precise operation and safe operation of the system, but at the same time, any failure may lead to a decrease in production efficiency or even a safety accident. Therefore, understanding how to effectively prevent failures in these systems has become a skill that maintenance engineers must master. This article will delve into the measures to prevent multi-turn valve interlock failures and help achieve system stability and reliability.

First, we need to understand what multi-turn valve interlocking is. Multi-turn valve interlocking is applied to valves with handwheels, and the interlocking operation is realized through the transmission of keys to avoid misoperation. Through reasonable interlocking logic and operating procedures, the correct operation of the valve can be ensured and potential dangers and accidents can be avoided.

However, even the most well-designed systems are bound to experience failures. The following are several common multi-turn valve interlock failures, causes and solutions. The key is lost. During use, there is always a key that is unlocked and may be lost during use. Keys are managed by dedicated personnel and placed in the key management cabinet promptly after use, which can effectively avoid the loss of keys. It is not restored after using the master key, resulting in failure to use it normally next time. The master key is kept by a dedicated person and is tracked promptly to see if it can be restored after use. Due to prolonged use and increased wear of the valve, the valve closing position deviates greatly from the initial debugging position, resulting in multi-exhibition valves being unable to be used normally. Just unlock the multi-turn valve lock and re-adjust it.

Key measures to prevent multi-turn valve interlock failure:

Reasonable operating procedures: Develop reasonable operating procedures and operating specifications to ensure that personnel operate multi-turn valve interlocking correctly. Train operators to improve their operating skills and safety awareness, and reduce failures caused by human factors.

Failure prevention of multi-turn valve interlocking is an important link in ensuring the safety and efficiency of industrial production. By understanding the system principles, analyzing the causes of failures, and taking corresponding preventive measures, we can effectively reduce the probability of failures and improve the stability and efficiency of production operations. I hope this article can provide you with valuable reference to help you prevent multi-turn valve interlock failures.

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