简要分析安全阀泄漏的原因

&lt;div> <p> &lt;div class="Section0"> <p class="p0"> <strong><span style="font-family:'Times New Roman';font-size:10.5pt;">安全阀</span></strong><span style="font-family:'Times New Roman';font-size:10.5pt;">泄漏的原因</span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　</span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　<span>a</span><span>、安全阀阀座或阀瓣密封面损伤</span></span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　</span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　造成密封面损伤的原因可能是由于腐蚀性介质对金属密封面的侵蚀而引起；也可能是安全阀在安装过程中带入阀进口腔室或密封面的脏物以及设备安装时留在安全阀进口管道或设备内的电焊渣、铁锈及混夹在介质中的各种固体物质等随安全阀排放时的高速介质的流速冲刷密封面而造成的伤痕。</span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　</span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　<span>b</span><span>、安全阀安装不当引起</span></span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　</span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　安装不当主要指安全阀进出口连接管道因安装不正确所形成的不均匀载荷使阀门同轴度遭受破坏或变形等引起的泄漏。</span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　</span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　<span>c</span><span>、安全阀高温引起</span></span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　</span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　使用于高温介质或安装在高温环境中的安全阀，在阀座或阀芯密封面堆焊层周围可能会产生不均匀的热膨胀以及弹簧受热后刚度变软、预紧力减小、带来密封比压力下降等而引起的泄漏。</span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　</span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　<span>d</span><span>、安全阀选用不当</span></span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　</span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　当所选用安全阀的开启压力与设备实际工作压力过于接近时，由于设备工作压力的波动范围接近或超过安全阀的密封压力也可能引起阀门的泄漏。</span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　</span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　<span>e</span><span>、安全阀脏物夹在密封面上</span></span><span style="font-family:'Times New Roman';font-size:10.5pt;"></span> </p> <p class="p0"> <span style="font-family:'Times New Roman';font-size:10.5pt;">　　</span> </p> &lt;/div> &lt;/div>(完)