Gas insulation power transmission device
A technology of power transmission and gas insulation, which is applied in the field of gas-insulated power transmission devices, and can solve problems such as the reduction of insulation strength of gas-insulated metal-enclosed transmission lines and the decline in the overall electrical performance of gas-insulated metal-enclosed transmission lines.
Pending Publication Date: 2021-05-14
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology
[0004] In addition, in conventional gas-insulated metal-enclosed transmission lines, there are a large number of moving metal particles. These moving metal particles will greatly reduce the insulation strength of gas-insulated metal-enclosed transmission lines, and may further cause air gap breakdown and adhesion Creepal flashover caused by particles on the surface of three-post insulators eventually leads to a decrease in the overall electrical performance of gas-insulated metal-enclosed transmission lines
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[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0020] Such as Figure 1~4 As shown, a gas-insulated power transmission device includes a pipeline housing 1, three-pillar insulators 2, support inserts 3, a central sleeve 4, a particulate trap 5, and a central conductor 6; the pipeline housing 1 adopts a cylindrical tube Type structure, connecting flanges are provided at both ends of the pipe shell 1; the three-pillar insulator 2 is located inside the pipe shell 1, and the ends of the three legs 21 of the three-pillar insulator 2 are provided with transfer recesses. Groove 22, the inner surface of the transition groove 22 is provided with internal threads; the support insert 3 adopts a solid cylindrical structure, and the outer surface of the support insert 3 is provided with external threads, and one end of the support insert 3 is connected to the three-pillar insulator through the...
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A gas insulation power transmission device comprises a pipeline shell, a three-post insulator, a supporting insert, a central sleeve, a particle trapper and a central conductor. The three-post insulator is located in the pipeline shell, a switching groove is formed in the end part of a supporting leg of the three-post insulator, and an internal thread is arranged on the inner surface of the switching groove; external threads are arranged on the outer surface of the supporting insert, one end of the supporting insert is in threaded connection with the three-post insulator supporting leg, and the other end of the supporting insert is welded to the pipeline shell; a center conductor penetrating hole is formed in the center of the three-post insulator; the central sleeve is positioned between the three-post insulator and the central conductor; reinforcing supporting rods are arranged between adjacent supporting legs of the three-post insulator and integrally form a triangular support structure, and the outer contour surfaces of the supporting legs are smooth arc transition surfaces; ;the particle trapper is of a thin-wall cylindrical structure and is horizontally arranged, a grid structure and a partition plate are sequentially arranged at the bottom of a cylinder to form a shielding spacer layer, and a low electric field area is formed in the position where the shielding spacer layer is located and a supporting insert penetrating hole is formed in the particle trapper cylinder.
Description
technical field [0001] The invention belongs to the technical field of high-voltage power transmission, and in particular relates to a gas-insulated power transmission device. Background technique [0002] Compared with traditional overhead lines or transmission cables, gas-insulated metal-enclosed transmission lines (GIL) have the advantages of large transmission capacity, flexible layout, and less impact from harsh environments. They are more and more widely used in the current high-voltage transmission field. [0003] However, in a conventional gas-insulated metal-enclosed transmission line, the length of the conductive rod can reach tens of kilometers, and the conventional three-pillar insulators used in the transmission line are prone to breakage or bursting, which may lead to accidents such as deformation or falling of the busbar. The reason is mainly reflected in the insufficient mechanical properties of conventional three-post insulators. Therefore, the mechanical p...
Claims
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IPC IPC(8): H02G15/20H02G15/007H02G3/04B01D46/00
CPCB01D46/00H02G3/0406H02G3/0481H02G15/007H02G15/20
Inventor 崔兆轩林莘陈圣徐建源庚振新邢恩阳叶维瀚包鹏然
Owner SHENYANG POLYTECHNIC UNIV