Introduction to improve the reliability of thermal control protection system

Abstract: introduction to improve the reliability of thermal control protection system of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. As to develop in the direction of large-scale, complicated power generation equipment, the failure form of exponential growth, the number of the types and severity of failure consequences in corresponding growth. In order to eliminate ( Or at least reduce) Failure consequences, use of automatic protection. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a introduction to improve the reliability of thermal control protection system the article details. As to develop in the direction of large-scale, complicated power generation equipment, the failure form of exponential growth, the number of the types and severity of failure consequences in corresponding growth. In order to eliminate ( Or at least reduce) Failure consequences, the use of automatic protection device, its function is: ( 1) Attract the attention of the operator of abnormal state ( Response from the impact on the fault warning light and alarm) ； （ 2) In the event of certain could cause serious consequences of a failure, makes the equipment stop running; （ 3) To eliminate or relieve the result of the failure of abnormal state, otherwise it will cause more serious damage; （ 4) Replacement has the function of the failure; （ 5) To prevent the occurrence of dangerous situation in important position. Automatic protection device is equipment operation, therefore, very important and indispensable part of its Settings to improve equipment reliability, safety and economy plays a very important role. However, the main functions of the protection device is not equipment parts, its task is only in certain equipment could cause serious consequences of a failure to take corresponding measures in time or protected, thus softening failure, downtime to repair, to avoid damage of major equipment and personnel casualty. That is to say, when the device runs trouble-free, protection system is in charged readiness; When running equipment failure occurs, the protection system to play a role, in working condition. Therefore, the protection system in the equipment run time with work and prepare for two kinds of state: working condition & ndash; — When the equipment failure, protection system normal movement, protection, call it right action; If the equipment failure, protection system failure without action, also called ark. Readiness & ndash; — When the normal operation of equipment, protection system is in charged ready, accept a long-term electric test. If during this period caused by protection system itself down action, cause equipment stoppage, called a trouble-free maloperation. Automatic protection system for the setting of the protected equipment is the failure consequences than without protective measures of fault consequences are much lower. Automatic protection system is often means that the existence of protection equipment maintenance requirements are not nearly as strict as unprotected system maintenance requirements. Therefore, must pay attention to: ( 1) To protect the system daily maintenance, than to be protected equipment daily maintenance to more wary; （ 2) Don't consider the maintenance requirements of protection system, can not be reasonably considered protected equipment maintenance requirements. Improve reliability of protection system suggest that the control system of modern power generation equipment not only each other, and restraining each other, any link failure is likely to be through the automatic protection system to signal that stop running, resulting in unnecessary economic losses. If it's fault caused casualties, it is security consequences; If failure in violation of the issued by the ministry of industry, regional and national environmental standards, so it would have an environmental consequences; So, many accidents are caused by failure is safety and environmental consequences, and safety and environmental standards are improving rapidly. Therefore, how to improve the reliability of protection system is a very important and urgent work. 1 under the premise that meet the functional requirements as far as possible keep the system simple electronic components have & ndash; A matter of life and the occasional failure probability problem. Some components may be longer service life. But some may be short, some failure probability higher, some lower failure probability. Use after a period of time such as electrolytic capacitors, internal electrolyte dry and easy to cause the failure, which seriously affect the reliable work of the whole system. In a complex system, with 5% & ndash; 10% of the components are completely unnecessary, but these parts failure, still has the potential to interrupt operation, dismantling these spare parts, not only the maintenance and funds decreased, and can lead to increased reliability. Therefore, under the premise of meeting the system function requirement, as far as possible keep the system simple, unnecessary parts and redundant complex structure, can only increase the failure probability of the system.

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