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                                        壓力試驗機試驗方法之氧氣瓶閥

                                        2015-04-21 0

                                        氧氣瓶閥壓力試驗機的幾種試驗方法

                                        1、氣密性試驗

                                        將閥裝在專用裝置上,充人氮氣或空氣,在1.1倍公稱壓力下,分別對關閉及任意開啟位置進行氣密試驗,浸人水中持續時間均不小于30s。閥處于關閉和任意開啟狀態下應無泄漏。

                                        2、耐壓性試驗

                                        將閥裝在專用裝置上(帶有安全裝置的閥應卸去安全裝置,以螺堵代之),,封閉出氣口,閥處于啟狀態時充壓,從閥的進氣口通人液體加壓至1.6倍公稱壓力,保壓5min。閥應無泄漏及其他異常現象。

                                        3、耐用性試驗

                                        將閥裝在專用裝置上,充人氮氣或空氣,加壓至本標準規定的公稱壓力,以8^30次/min的速度作全行程啟閉.在公稱壓力下,閥的結構為隔膜式結構時,全行程開閉10 00次;其他結構的閥全行程開閉40 00次,應無泄漏和其他異常現象。

                                        北京赛车计划数据
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