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通过对我市上万只安全阀校验和使用中出现的问题的处理,认为有些问题除使用单位管理水平及人员素质外,安全阀结构上不尽合理也是一个因素。所以只有从结构上进行改进,才能从根本上解决问题。1 安全阀提升盘下滑引起的泄漏及结构上的改进目前,国内生产的弹簧式带扳手安全阀都是图1结构。当扳动扳手时,顶部的提升盘带动调节螺杆上升使阀瓣抬起,起到定期排放防止阀瓣粘住的作用。提升盘靠螺帽紧固,如果在搬运及锅炉压力容器运行过程中发生振动,特别是安全阀超压排放的强烈振动,有可
Through the city of tens of thousands of safety valve check and use of the problems encountered in the treatment that some problems in addition to the use of unit management and personnel quality, the safety valve structure is not reasonable is also a factor. Therefore, only from the structural improvement, we can fundamentally solve the problem. 1 relief valve sliding plate caused by leakage and structural improvements slip At present, the domestic production of spring-type safety valve with a wrench are shown in Figure 1 structure. When pulling the wrench, the top of the lifting plate to drive the adjustment screw to lift the valve flap, play a regular discharge to prevent disc sticking role. If the lifting plate is fastened by nuts, if vibration occurs during handling and operation of the pressure vessel of the boiler, especially the strong vibration of overpressure relief valve, it is possible to