? 接頭概述及裝配說明一 Fittings And Fittings Assembly Instructions 1 - 寧波海曼科機械有限公司
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      接頭概述及裝配說明一 Fittings And Fittings Assembly Instructions 1
      作者: 發布時間: 2021-06-11 點擊次數: 829

      O形圈平面密封接頭概述 O-Ring Face Seal Fittings Instructions

      1.1、O形圈密封的基本結構可以有兩種,第一種為:由接頭體、O形圈、螺母、接管組成,接管與系統管路中的鋼管焊接連接,如圖1所示。第二種為:由接頭體、O形圈、螺母、襯套組成,管子被翻邊成90°,如圖2所示。使用圖1所示的基本結構時,須保證焊接的質量。

      The fitting has two types. The first type consists of a body,an O-Ring, a nut and the weld tube.The weld tube isbrazed with the system steel tube, see Fig.1.The second type consists of a body, an O-Ring,a nut and a sleeve.As shown in Fig.2.the tube is flanged to 90°.When used as Fig.1.the quality of weld is very important.



      1.2、O形圈平面密封能很好的使用于高壓系統,如使用硬度為N90的O形圈,能有更好的密封作用,更有效的防止泄漏。由于使用O形圈密封,因此使用的溫度范圍受O形圈材質的影響。

      O-Ring face seal fittings are suit for high pressure system.Id the hardnessof O-Ring is N90.the sealing will better.and be good for preveting leakage.

      1.3、O形圈平面密封接頭的連接螺紋有兩種:公制螺紋,美制ORFS螺紋

      The O-Ring face seal fitting has two connected thread: metric thread and ORFS thread.

      1.4、O形圈密封槽的結構有三種,如圖3、4、5。其中圖3結構能保持O形圈在安裝時或垂直倒置時不掉下,方便安裝;負壓時O形圈不會被吸入油路。圖4結構則不具備圖3結構的前一優點,圖5結構既不具備圖3的前一優點,而且負壓時會被吸入油路。

      As shown in Fig.3,Fig.4 and Fig.5, the O-Ring seal groove has three types. The advantage of type Fig.3. it is very convenience for installation, when put the groove adown O-Ring could be held in the groove and not drop; The O-Ring could not enter the hydraulic system when the pressure is negative. The type Fig.4 has only the later adavantage of the type Fig. 3. The tybe Fig. 5 has no above adavantage.

      3.gif

      1.5、對公制螺紋的O形圈槽如需按JB標準生產時,為圖5的結構。建議選用圖3結構,用戶可在訂貨時用文字說明,如未說明,一般按圖5JB標準。對美制ORFS螺紋的O形圈槽,全部采用圖3結構生產,不生產圖4或圖5結構。

      For metric thread O-Ring groove JB standard is type Fing. 5, but we suggest that the type Fig. 3 should be chosen and make a annotation when order. If no annotation we produce as type Fig. 5 general. For ORFS O-Ring groove, we produce as type Fig. 3 only.

      2、 O形圈平面密封接頭安裝  O-Ring Face Seal Fittings Assembly Instructions

      2.1、安裝   Assembly

      a)  對圖1的基本結構,在安裝前應先垂直鋸下鋼管(±1°以內),去掉內外徑毛刺,并去油及氧化物,套上螺母后再焊接。對圖2的基本結構,在垂直鋸下后用專用設備強管端翻邊成90°,且尺寸D應在D1D2之間,見圖6

      As shown in Fig. 1, the tube end is cut squarly(within±1°) before assemblied, deburr the O. D. and I. D. of the tube, remove all oil and oxide, weld after put the nut. As shown in Fig. 2, the tube is flanged to 90°with special equipment after cut, diameter D should fall between diameter D1 and D2, see Fig. 6.

      4.gif

      b)  如果接頭未放置O形圈,則應先放好O形圈

      The fitting body should be installed O-Ring firstly.

      c)  按圖1或圖2,將接管或鋼管翻邊壓住接頭體O形圈,用手擰緊螺母,再用扭矩扳手按扭矩建議表扳緊;如無扭矩扳手 ,可用普通扳手再擰緊1/41/2圈。

      As shown in Fig. 1 or Fig. 2, place tube assembly against the fitting body so that the face of the weld tube(or flanged steel tube) comes in full contact with the O-Ring. Tighten the nut onto the fitting body by hand .then tighten it to the recommended torque with a torque wrench .If torque wrenches are not available, tighen 1/4 to 1/2 turn with general wrench .

      2.2、重復安裝 Reassembly

      由于是平面密封型式且與安裝力垂直,在安裝過程中O形圈可能會扭曲,因此每次重復安裝時,應檢查O形圈有無損壞,必要時需更換。

         Because the sealing surf aces flat and perpendicular to the installtion force, the O-Ring may be distorted duri ng assembly. The O-Ring should be in spected at each disassembly and replaced when necessary.

      2.3、泄漏原因  Leakage reason

      a)  O形圈未正確的安裝在O形圈槽內。 The O-Ring is installed in the face seal groove improperly.

      b)  O形圈有損傷或損壞。 The O-Ring is damaged.

      c)  接頭密封面、接管或翻邊有凹坑或其他影響密封的缺陷。

          The sealing surface, the weld tube or the flange are not flat, or have another fault affecting sealing.

      d)  翻邊過大或過下,不能壓住O形圈。

          The flange is too large or too small that the O-Ring can’t be compressed.

      e)  O形圈材質不使用于工作溫度。  The O-Ring material is not suit for working temperature.

      g)  O形圈硬度不夠。  The O-Ring hardness is not enough.

      h)  連接螺母松開。   The connected nut is loosen.

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      寧波海曼科機械有限公司

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