Isolating disconnecting link

Abstract

The invention belongs to the technical field of power production and discloses an isolating disconnecting link. The isolating disconnecting link comprises a supporting frame, three phases of static contacts and three phases of moving contacts; the three phases of static contacts are fixed on a stand column of the supporting frame; each phase of static contact comprises an insulating cover, a metalconnecting contact and a first wire; the three phases of moving contacts are connected to the stand columns of the supporting frame in a sliding mode through a moving assembly; each phase of moving contact comprises a metal contact, a contact fixing block and a second wire; the contact fixing blocks of the three phases of moving contacts are connected through a horizontal second connecting arm; the metal contacts of the three phases of moving contacts are oppositely arranged under the metal connecting contacts of the three phases of static contacts; the moving assembly comprises a vertical supporting rod and a horizontal beam; the supporting rod is slidably connected to the supporting frame through the beam; a gear driving assembly is arranged at the lower end of the supporting rod; the upper end of the supporting rod is connected with one phase of moving contact through a telescopic assembly. Three-phase synchronous adjustment of the isolating disconnecting link is achieved, electricarcs are not prone to being generated in the process of switching off the isolating disconnecting link after power failure, metal corrosion is avoided, and the current conduction performance is good.

Description

technical field [0001] The invention belongs to the technical field of electric power production, and in particular relates to an isolation knife switch. Background technique [0002] Isolation switches are widely used in substations. In a primary system, when the switch disconnects the circuit current, it is necessary to use an isolation switch to pull the line, so that the line has an obvious disconnection point, so that the line can be repaired and maintained. When sending power, first close the isolation switch, and then use the switch to send power. [0003] Most of the current isolation switches are left and right or up and down meshing structures. This design structure has several disadvantages: first, it is troublesome to adjust the three-phase phase; The third is that metal corrosion is prone to occur due to being exposed in the open air; the fourth is that the contact surface of the engaging part is small, and the current conduction capacity is not sufficient. In...

AI Technical Summary

Problems solved by technology

[0003] Most of the current isolation switches are left and right or up and down meshing structures. This design structure has several disadvantages: first, it is troublesome to adjust the three-phase phase; The third is that metal corrosion is prone to occur due to being exposed in the open air; the fourth is that the contact surface of the meshing part is small and the current conduction capacity is not sufficient

Images