行业新闻

原文
Safety valve should be adjusted before use and calibration (1) safety valve in the pressure test and air tightness test should be carried out prior to installation in order to test the safety valve of the strength and sealing performance. Qualified to carry out the calibration and adjustment. (2) imposed by adjusting the load on the valve to correct the safety valve opening pressure in the gas test rig. The lever safety valve to adjust the position of the hammer spring-loaded safety valve adjusting spring compression. The safety valve opening pressure shall comply with the relevant provisions of the boiler, pressure vessel safety monitoring procedures. (3) on the container, by adjusting the safety valve adjustment ring and the valve clearance, adjust the safety valve discharge pressure and reseating pressure. If the safety valve opening pressure only leak without take-off or take off, but the pressure drop after the severe shock and the "beep" sound, then the gap is too large and should be adjusted smaller. If the back pressure is too low, the adjustment ring gap is too small, should be appropriate to transfer large. Steam safety valve discharge pressure should be less than or equal to 1.03 times the opening pressure, the opening and closing pressure should not exceed 10% of the opening pressure. Air or other gas safety valve discharge pressure should be less than or equal to the opening pressure of 1.10 times, opening and closing pressure of not more than 15 percent of the opening pressure. ? (4) The safety valve calibration and pressure adjustment, you must use the unit in charge of boiler and pressure vessel safety and technical personnel to the presence of adjustment and calibration device with the accuracy of the pressure gauge should be not less than one-line adjustment, there are security measures. (5) validation process, calibration shall promptly make a record. Validation qualified safety valve should be carried out after the installation of the attachment device seal, to prevent casual change has been adjusted to a good state.
原文来自：http://www.anquanfa.org

是由上海丰企阀门有限公司提供的阀门新闻，中文译文仅供参考，以下提供站内导航搜索：

中国安全阀网安全阀产品安全阀知识安全阀厂商安全阀博客安全阀行业新闻

译文：
(1)安全阀在安装前应进行耐压试验和气密性试验，以检验安全阀的强度和密封性能。合格后才能进行校正和调整。 (2)在气体试验台上，通过调节施加在阀瓣上的载荷来校正安全阀的开启压力。杠杆式安全阀调节重锤位置，弹簧式安全阀调节弹簧压缩量。安全阀的开启压力应符合锅炉、压力容器安全技术监察规程的有关规定。 (3)在容器上，通过调整安全阀调节圈与阀瓣的间隙，来调整安全阀的排放压力和回座压力。如果安全阀在开启压力下仅有泄漏而不起跳或虽起跳但压力下降后有剧烈震动和“蜂鸣”声，则是间隙偏大，应调整得小一些。如果回座压力过低，则是调节圈的间隙过小，应适当调大。蒸汽用安全阀的排放压力应小于或等于开启压力的1.03倍，启闭压差应不大于开启压力的10%。空气或其他气体用安全阀的排放压力应小于或等于开启压力的1.10倍，启闭压差不大于开启压力的 15%。 (4)安全阀进行校验和压力调整时，必须有使用单位主管锅炉压力容器安全的技术人员在场，调整及校验装置用压力表的精度应不低于1级，在线调校时，应有安全防护措施。 (5)校验过程中，校验人员应及时做好记录。校验合格的安全阀，在安装好有关附件装置后应进行铅封，以防止随便改变已调整好的状态。

更多新闻：