07-石化企业安全阀(刘扬)（07- Petrochemical safety valve (Liu Yang)）.doc

07-石化企业安全阀(刘扬)（07- Petrochemical safety valve (Liu Yang)） 07- petrochemical enterprise safety valve (Liu Yang).Txt, my life has A noodles, there are B noodles, your life has S noodles, there are B noodles. Failure is not terrible, the key is to see the success of his mother. Todays college students are too lacking in quality! Come over and get the wool and cut it! Have the time to learn Feng Shui, after the death of a good tomb, but also make up for the lifetime can not afford to buy a good room regret. This article is contributed by LIJUNYE9999 Ppt documents may experience poor browsing on the WAP side. It is recommended that you first select TXT, or download the source file to the local view. Failure modes and failure reasons of safety valves for pressure equipment in petrochemical enterprises Liu Huiyuan, Chen Xuedong, Liu Yang, Liu Huiyuan, Chen Xuedong, Hefei General Machinery Research Institute Failure modes and failure reasons of safety valves for pressure equipment in petrochemical enterprises 1. preface 1. Preface As the overpressure protection device of pressure equipment, the safety valve must meet the requirements of accurate opening, stable discharge, timely closure and reliable sealing. The safety valve in the use process, in addition to the safety valve safety valve frequency hopping is due to the import pipeline pipeline is too long, the throttle or safety valve adjusting ring caused by improper adjustment, medium temperature, pressure, the safety valve open and closed timely accurate and reliable sealing effect, resulting in a safety valve used for a period of time after the performance is not up to the requirements of safety valve failure. From the safety valve accuracy, safety valve in use, there are three possible failure modes: (1) from the safety valve safety valve opening accuracy, safety valve in use, there are three possible failure modes: (1 due to moving parts stuck, or blocked out cavity open; (2) safety valve pressure - media pressure to