A cable terminal tail pipe and its connecting process
A cable terminal and cable connection technology, which is applied in the direction of cable terminals and equipment for connecting/terminating cables, etc., can solve the problems of cable outer shielding main insulation burn, oxidation, deleading, etc., to avoid potential safety hazards, safe and reliable operation, The effect of high adhesion and strength
Active Publication Date: 2021-05-14
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem that the cable terminal tail pipe and its connection method in the prior art are prone to deleading, breakage, oxidation, etc., causing problems such as water ingress, discharge, heating, etc. , the outer shielding and even the main insulation of the cable will have a certain degree of burning problem, providing a cable terminal tail pipe and its connection process can effectively solve the above problems
Method used
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Embodiment 1
[0024] in such as figure 1 In the shown embodiment 1, a cable terminal tailpipe includes a pipe body part and a fixed part. The pipe body part is a copper-clad aluminum double-layer structure. It includes a tapered pipe 1 and a round pipe 2, one end of the round pipe is connected to the large-diameter end of the tapered pipe, the other end of the round pipe is connected to the fixed part, and the small-diameter end of the tapered pipe is formed with an aluminum sheath for connecting with the cable. The cable connection part 3 connected by the sleeve, the cable connection part is cylindrical, and its inner wall is provided with a spiral groove 4 matching the outer peripheral surface of the aluminum sheath of the cable. The cross section of the spiral groove is arc-shaped, and the adjacent The spiral grooves are connected through arc-shaped transitions; the fixed part is a flange 6, and there are 12 fixing holes 7 evenly distributed along the circumference of the flange (see i...
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The invention discloses a cable terminal tailpipe and a connection process thereof. The cable terminal tailpipe includes a tapered pipe and a circular pipe, and the small-diameter end of the tapered pipe is formed with a cable connection part for connecting with a metal sheath of the cable. The above-mentioned cable connection part is in the shape of a cylinder, and its inner wall is provided with a spiral groove matching the outer peripheral surface of the metal sheath of the cable. The end of the cable connection part away from the tapered tube and the metal sheath of the cable are fixed by cold welding. It effectively solves the problems of lead removal, breakage, oxidation, etc. that are easy to occur in the cable terminal tail pipe and its connection method in the prior art, causing problems such as water ingress, discharge, and heat generation. The cable outer shield and even the main insulation will have a certain degree of burn problem, which has high practical value.
Description
technical field [0001] The invention relates to the field of electric power technology, in particular to a cable terminal tailpipe and its connection process, which are used for 110kV XLPE insulated power cables (240mm 2 -1600mm 2 ) Installation of outdoor porcelain sleeves and composite casing terminals. Background technique [0002] The installation of cable accessories is one of the core processes of power cable lines. At present, the tail pipe assembly method in the installation process of high-voltage cable accessories is: the transition part between the end of the tail pipe and the metal sheath of the cable is circumferentially leaded to connect. Due to the difference in the lead filling level of the installers and the influence of environmental factors, the degree of fit between the tail pipe and the cable corrugated aluminum sheath and whether the lead seal is firm will vary, which may cause many defects during the installation of accessories. At the same time, due...
Claims
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IPC IPC(8): H02G15/06H02G15/04H02G1/14
CPCH02G1/14H02G15/04H02G15/06
Inventor 蒋理想李牧卢天白苏宇汪春萌吴虹沈红峰周咏槟都敏强孙永国王德法孙云峰魏泽民
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO