Full-dry-type outdoor terminal field gas installation tool
An installation tool, all-dry technology, applied in the direction of cable terminals, etc., can solve the problems of high proficiency of workers, cumbersome installation of components, scratches on rubber parts, etc., achieving the effect of low proficiency requirements, easy portability, and guaranteed cleanliness
Inactive Publication Date: 2013-03-13
JIANGSU ZHONGTIAN TECH CABLE ACCESSORIES CO LTD
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Problems solved by technology
[0007] 3) There is a hidden danger of scratches inside the rubber parts during on-site installation, resulting in serious quality accidents
[0008] The disadvantages of the existing air expansion method are: the installation of components is cumbersome, there are many parts, and the workers are required to be highly skilled.
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[0019] like figure 1 As shown, a fully dry outdoor terminal on-site gas installation tool includes a gas nozzle body 1, the outer diameter of the gas nozzle body is adapted to the size of the inner hole of the fully prefabricated rubber part, and an inner hole 2 is provided in the gas nozzle body 1. The depth of the inner hole 2 is adapted to the size of the cable conductor outlet stalk, and an air delivery hole 3 communicating with the inner hole 2 and used for inputting high-pressure nitrogen gas is provided on the rear end surface of the valve body 1 . The front end of the valve body 1 has a taper 4, and a sealing ring 5 is provided on the outer edge.
[0020] The installation of high-voltage cable accessories requires that foreign impurities and moisture should not be brought in during the installation process. Therefore, the use of gas is required to be pure nitrogen. During the installation process, the air pressure makes the rubber parts and the cable interface slightly...
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The invention discloses a full-dry-type outdoor terminal field gas installation tool which comprises an air nozzle body; the outer diameter of the air nozzle body is adaptive to the size of a fully prefabricated rubber element inner hole; the air nozzle body is internally provided with an inner hole; the depth of the inner hole is adapted to the size of an electric cable conductor outgoing line stalk; the rear end surface of the air nozzle body is provided with an air input hole which is communicated with the inner hole and is used for inputting high-pressure nitrogen; and the front end of the air nozzle body is provided with a taper, and the outer edge of the air nozzle body is provided with a seal ring. When the full-dry-type outdoor terminal field gas installation tool is used, the air nozzle body is inserted into the upper end of a rubber element, nitrogen is filled between the rubber element and the electric cable insulation; the rubber element is pushed along the air-blowing direction by installation personnel, so that the rubber element is in place according to the installation size; and the full-dry-type outdoor terminal field gas installation tool is convenient to use, and requires less to the proficiency of workers.
Description
[0001] technical field [0002] The invention belongs to a high-voltage cable accessory, in particular to a full-dry field gas installation tool for an outdoor terminal. Background technique [0003] In the field of high-voltage cables, the silicone rubber outdoor terminal is installed at the end of the cable through the elasticity of the silicone rubber. Among them, the fully prefabricated silicone rubber outdoor terminal has a length of 1500mm, a wall thickness of 13mm, and a huge elastic force. It can only be put on the end of the cable with the help of tools. At present, there are two methods in the existing technology. One is to forcibly insert the support tube wound by the support bar into the rubber part of the silicone rubber outdoor terminal before leaving the factory to stretch it out. The support bar is pulled out to realize the installation. The second is to adopt a kind of air expansion device, which is composed of a sealing base, a guide rod, flanges at both ...
Claims
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IPC IPC(8): H02G15/04
Inventor 吴厥恒高卓
Owner JIANGSU ZHONGTIAN TECH CABLE ACCESSORIES CO LTD