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卡套式管接頭的介紹一．單卡套式卡套接頭單卡套式卡套管接頭由三部分組成：接頭體、卡套、螺母。當卡套和螺母套在鋼管上插入接頭體后，旋緊螺母時，卡套前端外側與接頭體錐面貼合，內刃均勻地咬入無縫鋼管，形成有效密封。 二、雙卡套式卡套接頭1．結構圖 結構特點：在裝配具有先進幾何形狀設計特點的管接頭時 ，前卡套被推入到接頭本體和卡套管形成主密封，而后卡套向內產生鉸鏈作用以對卡套管形成強有力的抓緊。后卡套的幾何形狀有助于產生先進的工程鉸鏈-夾箍作用，這種作用可把軸向運動轉化為卡套管上的徑向擠壓作用。2．雙卡套的機械式抓緊設計優(yōu)點：雙卡套將密封功能和對卡套管的抓緊功能分開，每個卡套都針對其相應的功能進行了優(yōu)化。前卡套用于形成密封： ■ 與接頭本體之間的密封 ■ 卡套管外徑的密封。旋轉螺母時，后卡套將： ■ 沿軸向推進前卡套 ■ 沿徑向施加一個有效的卡套管抓緊。3．使用該產品的優(yōu)點：■ 良好的氣體密封和卡套管抓緊作用 ■ 易于進行正確的安裝■ 極好的抗振動疲勞性能和卡套管支撐4、雙卡套接頭與不銹鋼管的裝配4.1保證所有零部件的清潔，在整個裝配過程中不受污染。4.2．管子的處理：4.2.1 管子表面插入卡套接頭的部分要光滑完好，避免出現劃傷等缺陷。4.2.2 管子的端面要垂直于管的軸線，管口無毛刺。4.2.3 管子如要彎曲，管端要預留一定的長度， L值，要遵照接頭的生產商給出的建議值，一般情況下，L的長度不小于3倍螺母的長度，否則會影響管子的插入和密封。4.3安裝小于1英寸或都25毫米管內徑的卡套管接頭的安裝4.3.1靠前步拿到卡套接頭后，用手指輕輕地松開卡套接頭螺母1/4圈。（注意：比較好不要擰下螺母）如不小心擰下后，裝配時必須確保接頭內的前，后卡套不缺少，并且處于正確的位置。 第二步，拿管子插到卡套接頭里，注意一定要把管子插到底一直頂到卡套接頭內壁的管肩上， 用手指旋緊螺母，等指旋不動后就可以了。4.3.3. 第三步：在卡套螺母的6點位置做一標記。 用扳手固定接頭本體，旋轉卡套螺母一又四分之一轉，這時所做標記旋轉540度，至9點鐘位置。 如果是小尺寸的卡套管內徑，如1/16英寸，1/8英寸，3/16英寸，2毫米，3毫米和4毫米，只要轉四分之三圈3點位置就可以了,安裝尺寸大于1in.或者25mm的世偉洛克（swagelok）卡套管接頭時請遵循本規(guī)范。■使用世偉洛克（swagelok）多頭液壓預裝裝置(MHSU) 把卡套預裝在卡套管上。■ 在本體螺紋和后卡套的后表面上涂少量隨接頭提供的潤滑劑?！?將帶有預裝卡套的卡套管插入接頭內，直到前卡套頂在接頭本體上；用手擰緊螺母。■ 在 6 點鐘的位置給螺母作標記 牢牢固定接頭本體，將螺母緊固二分之一圈以使其停在 12 點鐘的位置。使用世偉洛克（swagelok） MHSU 間隙檢測規(guī)確認接頭已經充分緊固。5．要注意卡套接頭尺寸與管子尺寸的配套。如OD3/8inch和OD10mm的管子，管徑接近，但OD3/8inch的管不能與OD10mm的接頭連接，反之也如此。生產商一般在公制接頭上做了標記，安裝時要注意區(qū)分。6．泄漏原因6.1. 前后卡套方向或位置裝錯6.2. 鋼管外表面刮傷或鋼管不圓。6.3. 鋼管沒有插到底6.4. 螺母沒有擰緊6.5. 鋼管太硬。
Introduction of bayonet type pipe joint. Single sleeve type sleeve joint is composed of three parts: the body, the sleeve and the nut. When the sleeve and nut are inserted into the joint body on the steel tube and the nut is tightened, the outer end of the sleeve shall fit into the cone of the joint body and the inner edge shall bite into the seamless steel tube evenly to form an effective seal. Two, double sleeve type sleeve joint 1. Structural features: during the assembly of pipe joints with advanced geometric design features, the front sleeve is pushed into the body of the joint and the sleeve to form the main seal, and then the sleeve ACTS as a hinge inward to form a strong grip on the sleeve. The geometry of the rear sleeve contributes to an advanced engineering hinge-clamp action that translates the axial motion into a radial squeeze on the sleeve. 2. Advantages of mechanical grip design of double sleeve: double sleeve will separate the sealing function from the clamping function of the sleeve, and each sleeve is optimized for its corresponding function. The front sleeve is used to form a seal: ■ sealing between the joint body and the seal of the outer diameter of the sleeve. When rotating the nut, the rear sleeve will: ■ advance the front sleeve axially. ■ apply an effective sleeve grip along the radial direction. 3. Advantages of using this product: excellent gas seal and grip of the sleeve. ■ easy to install correctly. ■ excellent anti-vibration fatigue performance and the sleeve support. 4.2. Pipe treatment: 4.2.1 pipe surface insert sleeve joint should be smooth and intact to avoid scratches and other defects. 4.2.2 the end face of the pipe shall be perpendicular to the axis of the pipe without burr at the nozzle. 4.2.3 if the pipe is to be bent, a certain length shall be set at the pipe end and L value shall be in accordance with the recommended value given by the manufacturer of the joint. Generally, L length shall not be less than 3 times the length of the nut, otherwise it will affect the insertion and sealing of the pipe. Step 1 after getting the sleeve joint, gently loosen the sleeve joint nut 1/4 turn with your finger. (note: it is best not to take off the nut.) after accidentally taking off the nut, it is necessary to ensure that the front and back clamps in the joint are not missing and in the correct position during assembly. The second step, take the pipe into the sleeve joint, pay attention to be sure to insert the pipe to the end of the sleeve joint wall of the pipe shoulder, with the finger screw the nut, such as the finger can not rotate. Step 3: make a mark at 6 o 'clock of the nut. Using a wrench to secure the body of the joint, turn the nut nut one and a quarter turn, at which time the mark is rotated 540 ° to 9 o 'clock. If the casing diameter is small, such as 1/16 inch, 1/8 inch, 3/16 inch, 2 mm, 3 mm and 4 mm, just turn three quarters of a turn to the 3-point position and follow this specification when installing a swagelok casing joint larger than 1in. Or 25mm. ■ use swagelok multi-head hydraulic preassembly (MHSU) to preinstall the sleeve on the sleeve. ■ apply a small amount of lubricant supplied with the joint on the back surface of the body thread and the back sleeve. ■ insert the sleeve with pre-installed sleeve into the joint until the front sleeve is on the body of the joint; Tighten the nut by hand. ■ mark the nut at 6 o 'clock to secure the body of the joint and fasten the nut on one half of the ring so that it stops at 12 o 'clock. Use swagelok MHSU clearance gauge to confirm that the joint is adequately secured. 5. Pay attention to the matching between the size of the sleeve joint and the size of the pipe. For example, the pipe diameter of od3/8 inch and OD10mm is close, but the pipe of od3/8 inch cannot be connected with the joint of OD10mm, and vice versa. The manufacturer usually marks the metric joints and must pay attention to the distinction when installing them. 6. 6.2. The outer surface of the steel tube is scratched or the steel tube is not round. The steel tube is not inserted to the bottom 6.4. The nut is not tightened 6.5. The steel tube is too hard.
