原文：
　安全阀是一种非常重要的保护用阀门，广泛地用在各种压力容器和管道系统上，当受压系统中的压力超过规定值时，它能自动打开，把过剩的介质排放到大气中去，以保证压力容器和管道系统安全运行，防止事故的发生， 而当系统内压力回降到工作压力或略低于工作压力时又能自动关闭。安全阀工作的可靠与否直接关系到设备及人身的安全，所以必须给予重视 安全阀常见故障原因分析及解决方法 1、安全阀门漏泄 在设备正常工作压力下，阀瓣与阀座密封面处发生超过允许程度的渗漏，安全阀的泄漏不但会引起介质损失。另外，介质的不断泄漏还会使硬的密封材料遭到破坏。但是，常用的安全阀的密封面都是金属材料对金属材料，虽然力求做得光洁平整，但是要在介质带压情况下做到{jd1}不漏也是非常困难的。因此，对于工作介质是蒸汽的安全阀，在规定压力值下，如果在出口端肉眼看不见，也听不出有漏泄，就认为密封性能是合格的 2、安全阀阀体结合面渗漏 指上下阀体间结合面处的渗漏现象，造成这种漏泄的主要原因有以下几个方面： 一是结合面的螺栓紧力不够或紧偏，造成结合面密封不好。xx方法是调整螺栓紧力，在紧螺栓时一定要按对角把紧的方式进行，{zh0}是边紧边测量各处间隙，将螺栓紧到紧不动为止，并使结合面各处间隙一致。 二是安全阀阀体结合面的齿形密封垫不符合标准。例如，齿形密封垫径向有轻微沟痕，平行度差，齿形过尖或过坡等缺陷都会造成密封失效。从而使阀体结合面渗漏。在检修时把好备件质量关，采用合乎标准的齿形密封垫就可以避免这种现象的发生 三是安全阀阀体结合面的平面度太差或被硬的杂质垫住造成密封失效。对由于阀体结合面的平面度太差而引起阀体结合面渗漏的，xx的方法是将阀门解体重新研磨结合面直至符合质量标准。由于杂质垫住而造成密封失效的，在阀门组装时认真清理结合面避免杂质落入 3、冲量安全阀动作后主安全阀不动作 这种现象通常被称为主安全门的拒动。主安全门拒动对运行中的锅炉来说危害是非常大的，是重大的设备隐患，严重影响设备的安全运行，一旦运行中的压力容器及管路中的介质压力超过额定值时，主安全门不动作，使设备超压运行极易造成设备损坏及重大事故。主安全门安全阀拒动主要与以下因素有关：安全阀阀门运动部件有卡阻现象。这可能是由于装配不当，脏物及杂质混入或零件腐蚀；活塞室表面光洁度差，表面损伤，有沟痕硬点等缺陷造成的。

“ Fault Analysis of boiler safety valve ”是由提供的国际阀门新闻，译文仅供参考。另外，中国安全阀网还提供相关产品搜索： 、 、 、 、 等。

译文：
Is a very important safety valve for protection of valves, widely used for the container and a variety of Ya Li Shang Guan Dao system, when the compression system Zhong pressure Chaoguoguiding 值 It autonomously Dakai, the surplus in the media Paifang to Tai Qi and going to ensure the safety of pressure vessels and piping systems to run, to prevent accidents, and when the pressure back down to work within the system pressure, or slightly lower than the pressure of work and can automatically shut down. A reliable safety valve work is directly related to equipment and personal security, so attention must be given Common causes of valve failure analysis and solutions 1, safety valve leakage Under normal working pressure in the equipment, valves and valve seat sealing surface took place more than allowed levels of leakage, valve leakage will not only cause loss of media. In addition, the media will continue to leak to the destruction of the hard seal material. However, the common safety valve sealing surface is metal to metal, while striving to do is smooth, but to bring in the media under pressure to do absolutely no leakage is very difficult. Therefore, the working medium is steam safety valve, the pressure value in the provision, if the invisible in the export side, it can not find leak, he said that sealing performance is qualified 2, combined with surface safety valve valve leakage Means the joint surface between the upper and lower body leakage Office, resulting in leakage of the main reasons that the following aspects: The first joint surface of the bolt tightening force is not enough or tight side, causing a bad combination of surface seal. Elimination method is to adjust bolt tightening force, when we must act in the bolt on the angle of the tight manner, preferably tight side edges around gap measure, the bolt tight to bear the fixed date, and to integrate space throughout the area unanimously. Second, the combination of valve body gasket surface profile does not meet the standards. For example, a slight radial profile gasket grooves, parallel to the difference, too sharp or too sloping tooth defects such as will cause seal failure. Thus combining body surface leakage. When the good parts in the repair quality, use of standard tooth profile gasket occurrence of this phenomenon can be avoided Third, the combination of valve body surface flatness bad or hard of impurities caused by seal failure pad to live. As the body of the joint surface of the plane body caused by bad combination of surface leakage, remove the method is to re-grind the valve combined with the disintegration of surface until it meets quality standards. As the impurities cushion seal failure caused by living in the valve assembly carefully to avoid impurities falling into the joint surface cleaning 3, impulse action Houzhu safety valve safety valve does not move This phenomenon is often referred to as the main security door and refuse to move. Refuse the main safety doors in the boiler is running against a very large, a major equipment hidden, seriously affect the safe operation of equipment, pressure vessels, once in operation and line of medium pressure than ratings, the primary safety door no action, making the equipment easy to overpressure caused equipment damage and run a major accident. The main security gate valve Refusing mainly the following factors: safety valve valve moving parts are jamming phenomenon. This may be due to improper assembly, dirt and impurities mixed or parts corrosion; piston chamber poor surface finish, surface damage, there are grooves and other defects caused by hard spot