Gas insulated load switch
A load switch and gas-insulated technology, applied in electric switches, high-voltage/high-current switches, electrical components, etc., can solve problems such as poor arc extinguishing performance, achieve good arc extinguishing performance, ensure gas compression effect, and reduce internal volume Effect
Active Publication Date: 2015-11-25
XIAMEN HUADIAN SWITCHGEAR
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Problems solved by technology
[0003] The invention provides a gas-insulated load switch, which overcomes the disadvantage of poor arc extinguishing performance in the background technology of the gas-insulated load switch
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[0027] Please check Figure 1 to Figure 6 , A gas-insulated load switch, which includes an insulating housing 10, and the housing 10 is filled with insulating gas, such as sulfur hexafluoride. The insulating housing 10 contains an upper static contact 20, a lower static contact 30, a ground contact 40, a movable contact knife 50, a driving mechanism 60 and a blade 70 inside.
[0028] In this embodiment, the insulating housing 10 includes upper and lower shells, and the upper and lower shells are fixedly connected together and a sealed inner cavity is formed therein. A boss 13 is protruding from the lower part of the inner wall of the housing 10, and in this embodiment, the boss 13 is protruding from the middle of the inner wall of the lower housing.
[0029] An upper static contact 20 is fixed in the insulating housing 10. In this embodiment, the upper static contact 20 is installed on the inner wall of the upper housing. Moreover, a permanent magnet is installed on the upper sta...
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The invention discloses a gas-insulated load switch. The gas-insulated load switch comprises an insulation outer shell, wherein insulation gas is filled into the insulation outer shell, and an upper static contact, a lower static contact, a grounding contact, a movable contact cutter and a driving mechanism are arranged inside the insulation outer shell. The movable contact cutter can rotate relative to the outer shell, and the driving mechanism is connected with the movable contact cutter so as to drive the movable contact cutter to rotate among a switch-on position, a separating brake position and a grounding position. The separating brake position is located between the switch-on position and the grounding position, and a permanent magnet is installed on the upper static contact. A blade is fixedly arranged on the movable contact cutter, and a sealing part, corresponding to a position between the switch-on position and the separating brake position, of the outer shell is matched with the blade hermetically, so that an inner cavity of the outer shell is divided into two air chambers. The blade is provided with air blowing openings which are communicated with the two air chambers, and the air blowing openings are directed at the upper static contact. The gas-insulated load switch has the advantages that an air compression mode and a magnetic mode are combined skillfully to be applied to the load switch, and therefore the arc extinguishing capacity of the switch is improved greatly; and the gas-insulated load switch is simple and compact in structure, low in cost, good in arc extinguishing performance and high in reliability.
Description
Technical field [0001] The invention relates to a gas insulated load switch. Background technique [0002] The existing sulfur hexafluoride insulated load switch generally includes an insulating shell and a static contact, a movable contact knife, a grounding contact and a driving mechanism enclosed in the insulating shell. The driving mechanism drives the movable contact knife to move in the closing position , Activity between the opening position and the grounding position. In order to extinguish the arc generated in the process of opening and closing the load current, the existing methods are mainly divided into: gas production method, compressed air method, magnetic suction method, cold arc grid method, etc. for arc extinguishing, and a certain method of arc extinguishing is used alone. The arc extinguishing ability is limited, which often causes the arc extinguishing failure. Summary of the invention [0003] The present invention provides a gas-insulated load switch, which...
Claims
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IPC IPC(8): H01H33/18
Inventor 郑闽生吴良云张兴朗何光元黄扬科
Owner XIAMEN HUADIAN SWITCHGEAR