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日本CKD電磁閥閥門的試壓與試漏有哪些?

更新時間:2016-01-06 點擊量:1347

日本CKD電磁閥閥門的試壓與試漏有哪些?
日本CKD電磁閥指的是閥體強度試驗。試漏,指的是密封面嚴密性試驗,這兩項試驗是對日本CKD電磁閥閥門主要性能的檢查。
試驗介質,一般是常溫清水,重要日本CKD電磁閥閥門可使用煤油。安全閥定壓試驗,可使用氮氣較穩(wěn)定氣體,也可用蒸汽或空氣代替。對于隔膜閥,使用空氣作試驗。
(一)試驗壓力
      日本CKD電磁閥閥門強度試驗壓力,與公稱壓力有下列關系
          公稱壓力(Mpa)                強度試驗壓力(Mpa)
             0.1                                    0.2
               0.25                                     0.4
             0.4                                   0.6
               0.6                                    0.9
               1.0                                    1.5
                1.6                                   2.4
              2.5                                 3.8
                4.0                                    6.0
                6.4                                    9.6
                10.0                                     15.0
                16.0                                  24.0
                20.0                                     30.0
                25.0                                     38.0
                32.0                                     48.0
由上可見,公稱壓力從0.4Mpa-32Mpa,這些常用壓力閥門,其強度試驗壓力為其1.5倍。
日本CKD電磁閥閥門密封試驗壓力,于公稱壓力。
(二)試驗方法
試壓試漏,在試驗臺上進行。試驗臺(如圖5-1)的結構,試驗臺上面有一壓緊部件,下面有一條與試壓泵相連通的管路。將閥壓緊后,試壓泵工作,從試壓泵的壓力表上,可以讀出閥門承受壓力的數(shù)字。試壓閥門充水時,要將閥內空氣排凈。試驗臺上部壓盤,有排氣孔,用小閥門開閉??諝馀艃舻臉酥臼?,排氣孔中出來的全部都是水。
關閉排氣孔后,開始升壓。升壓過程要緩慢,不要急劇。達到規(guī)定壓力后,保持3分鐘,壓力不變?yōu)楹细瘛?br /> 試壓試漏程序可以分三步:
1、打開日本CKD電磁閥閥門通路,用水(或煤油)充滿閥腔,并升壓強度試驗要求壓力,檢查閥體,閥蓋、墊片、填料有無滲漏。
2、關死閥路,在閥門一側加壓公稱壓力,從另一側檢查有無滲漏。
3、將日本CKD電磁閥閥門顛倒過來,試驗相反一側。

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