A connecting fitting and its fixing fitting

Abstract

The invention discloses an insulator set clamp and support clamps of the insulator set clamp. The sheath wall of a supporting part of each support clamp jacks outwards a pushing part through a wheel poking part and then pushes a contact piece through the corresponding pushing part outwards, and finally the support clamps are assembled in a tubular busbar through the contact pieces in a tensioned mode. In the using process, when a fixing part is inserted to the front of a tube opening of the tubular busbar, the inner ends of the pushing parts are located in sediment grooves in the wheel poking parts, the contact pieces on the supporting parts are not jacked by the pushing parts and naturally contract, and accordingly the support clamps can be conveniently and wholly inserted into the tube opening of the tubular busbar; after the support clamps are wholly inserted into the tube opening of the tubular busbar, the wheel poking parts are then rotated or pulled, the inner ends of the pushing parts are moved to the peripheral faces from the sediment grooves of the wheel poking parts, the peripheral faces of the wheel poking parts jack the contact pieces outwards through the pushing parts, and the support clamps are assembled in the tubular busbar in the tensioned mode. The insulator set clamp has the advantages that assembling is convenient, the structure is simple, and small space is occupied.

Description

technical field [0001] The invention relates to a connection fitting and a fixing fitting thereof. Background technique [0002] At present, with the increasing domestic power demand, the capacity and debt flow of conventional converter stations can no longer meet the actual power demand, so that UHV DC transmission will gradually replace conventional power transmission methods and become my country's future long-distance large-capacity power transmission. As the mainstream of the project, the construction of UHV DC substations will also greatly increase, and the amount of busbar connection fittings in the valve hall of UHV DC substations will also increase. With the increase of capacity and carrying capacity, the voltage level requirements of the components in the valve hall of the substation will also increase, so that the pipe diameter of the busbar will increase accordingly. The fixing fittings are connected by clamps buckled on the outer circumference of the end of the pi...

AI Technical Summary

Problems solved by technology

[0002] At present, with the increasing domestic power demand, the capacity and debt flow of conventional converter stations can no longer meet the actual power demand, so that UHV DC transmission will gradually replace conventional power transmission methods and become my country's future long-distance large-capacity power transmission. As the mainstream of the project, the construction of UHV DC substations will also greatly increase, and the amount of busbar connection fittings in the valve hall of UHV DC substations will also increase. With the increase of capacity and carrying capacity, the voltage level requirements of the components in the valve hall of the substation will also increase, so that the pipe diameter of the busbar will increase accordingly. The fixing fittings are connected by clamps buckled on the outer circumference of the end of the pipe busbar. For example, Chinese patent document 201310683723.1 discloses a kind of 800KV converter station bushing and pipe busbar bridge overcurrent fittings. The connecting fittings The outer diameter will increase with the increase of the pipe diameter, so that the space size inside the entire valve hall will also need to increase, which will have a great impact on the construction and layout of the entire valve hall

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