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                                        閥門試壓方法之蝶閥試壓

                                        2016-11-04 0

                                        在了解蝶閥試壓之前先來了解一下什么是蝶閥。蝶閥是指關閉件(閥瓣或蝶板)為圓盤,圍繞閥軸旋轉來達到開啟與關閉的一種閥門,常用于管道切斷和節流。

                                        蝶閥分類有:手柄蝶閥、渦輪蝶閥、氣動蝶閥、電動蝶閥等。

                                        蝶閥試壓(強度試驗)與截止閥的試驗方法一樣。通常將組裝好的閥門放在試壓架中,打開閥瓣,注入介質至規定值,檢查閥體和閥蓋是否冒汗和滲漏。也可單件進行強度試驗。密封性試驗只做截止閥。試驗時截止閥的閥桿成垂直狀態,閥瓣開啟,介質從閥瓣底下一端引入至規定值,檢查填料和墊片處;待合格后關閉閥瓣,打開另一端檢查是否有滲漏。如果閥門強度和密封性試驗都要做時,可先做強度試驗,然后降壓至密封性試驗規定值,檢查填料和墊片處;再關閉閥瓣,打開出口端檢查密封面是否滲漏。

                                        蝶閥的密封性能試驗應從介質流人端引入試驗介質,蝶板應開啟,另一端封閉,注入壓力至規定值;檢查填料和其他密封處無滲漏后,關閉蝶板,打開另一端,檢查蝶板密封處無滲漏為合格。作為調節流量用的蝶閥可不做密封性能試驗。

                                        億威仕公司專業研發生產閥門試壓設備,適用于各類型閥門的試驗需求,歡迎咨詢:0755-8889 8859 QQ459675648.

                                        北京赛车计划数据
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