CN2791985Y - Composite semi-insulated copper-aluminium pipe bus bridge - Google Patents

Abstract

The utility model discloses a composite semi-insulated copper-aluminum pipe bus bridge which relates to a power transforming connection device between a transformer of 6KV, 10KV, 36KV and an indoor high voltage distributing cabinet. One end of the copper-aluminum pipe bus is connected with a side line of the transformer through a terminal expansion joint, the other end is connected with a wall bushing, and the middle part is supported by an external connection joint or a middle expansion joint junction is supported by a bracket and fixed by fixing hardware fittings. A composite insulating layer which is composed of a polytetrafluoroethylene layer, a high voltage bushing, and a semiconductor bushing is arranged outside the copper-aluminum pipe bus. Multiple insulating layers are compounded on the outer surface of the copper-aluminum pipe bus in the utility model, and a fine air channel is arranged in the copper-aluminum pipe bus to avoid air discharging in damp environments, short circuit caused by incidents, and conductivity reduction caused by the heating of the copper-aluminum pipe bus. The utility model has the advantages of strong electrodynamic force resisting ability, simple structure, beautiful external appearance, convenient maintenance, and low cost; the bus bridges of different materials are adopted to meet the economical and rational requirements of users.

Description

Compound semi-insulating copper, aluminum tube bus bridge

Technical field the utility model relate to a kind of from 6KV, 10KV, 35KV transformer side to the power transformation jockey the indoor high voltage power distributing cabinet.

Background technology is present, and domestic most of bus bridge adopts rectangular aluminium bus, has following shortcoming in practice:

(1) the rectangular bus bar mechanical strength is low, and the moment of span is little, and tie-point is many, so accident point is many;

(2) by air insulation, under plum rain season and wet environment, particularly the coastal area high humidity is easy to generate atmospherical discharges, and it is accidents caused to hit the personage under the high voltage magnetic field effect easily;

(3) when occurring falling contingent such as thing or people, animal in the air, be easy to generate instantaneous short circuit, cause large-area power-cuts;

(4) influenced by poly-skin effect, under equal current conditions, the material that rectangular bus bar not only uses is many, also causes the bus heating easily, reduces conduction power.

For this reason, " insulation copper tube as bus bridge " (patent No. 01215398) patent is arranged, it is to install insulating barrier additional in the copper pipe appearance, it is more safe and reliable that the insulation copper tube as bus bridge is in operation, prevent the problems referred to above, but its adopt methods be not most advanced, and what insulating barrier what do not point out to install additional is? it is what kind of insulating barrier?

The summary of the invention the purpose of this utility model is at above-mentioned present situation, aims to provide a kind of employing copper, aluminium material, and anti-electronic ability is strong, compound semi-insulating copper safe and reliable to operation, aluminum tube bus bridge.

The implementation of the utility model purpose is, compound semi-insulating copper, aluminum tube bus bridge, copper, aluminum tube bus 6 one ends are connected with transformer side line 1 by terminal expansion joint 2, one termination wall bushing 13, the centre is held by carriage 5 with external connector 8 or middle expansion joint 7 junctions, and, outside copper, the aluminum tube bus 6 composite insulation layer 9 being arranged with fixedly gold utensil 3 is fixing, composite insulation layer 9 is made of polytetrafluoroethylene floor 10, bushing 11, semiconductor sleeve pipe 12.

The utility model is had a good air duct in vain at copper, aluminum tube bus appearance composite multiple insulating barrier in copper, the aluminum tube bus, can avoid the atmospherical discharges under wet environment; The short circuit that incident causes; Copper, aluminum tube bus heating cause conductance to reduce.The anti-electrodynamic ability of the utility model is strong, simple in structure, and appearance structure is attractive in appearance, and is easy to maintenance, and expense is low; Adopt the unlike material bus bridge, satisfy the requirement of user's economic rationality.

Description of drawings

Fig. 1 is the utility model structural representation

Fig. 2 is the compound semi-insulating aluminum tube bus insulation layer structure schematic diagram of the utility model.

Embodiment is with reference to Fig. 1, the utility model is connected with transformer side line 1 by terminal expansion joint 2 by copper, aluminum tube bus 6 one ends, one termination wall bushing 13, the centre is held by carriage 5 with external connector 8 or middle expansion joint 7 junctions, and, outside copper, the aluminum tube bus 6 composite insulation layer 9 is arranged with fixedly gold utensil 3 is fixing.5 times chord posts of carriage porcelain vase 4 and pillar 14.

With reference to Fig. 2, composite insulation layer 9 is made of polytetrafluoroethylene floor 10, bushing 11, semiconductor sleeve pipe 12.The line bridge, a kind of bus bridge is characterized in that: copper, aluminum pipe type bus appearance composite insulation layer, anti-electronic ability is strong, makes compound semi-insulating copper, aluminum tube bus bridge safer in power operation, more efficient, and outward appearance is more beautiful.

In order to overcome the above-mentioned deficiency of rectangular bus bar bridge, the utility model

(1) rectangular bus bar is changed into copper, aluminum pipe type bus, the bore design of tube type bus becomes a good air duct, thereby makes bus bridge that good result of ventilating heat dissipation be arranged, and bus bridge is no longer generated heat, and has improved power supplying efficiency;

(2) make insulating barrier and will manage bus appearance composite high pressure insulating barrier at copper, aluminum tube bus outer surface ptfe composite successively, bushing, semiconductor sleeve pipe, the current protection that will be distributed in copper (aluminium) pipe bus surface gets up to be hedged off from the outer world, can prevent atmospherical discharges under the wet environment, can prevent to fall the short circuit of accidental contact such as thing or people, animal caused by factors in the air, safer in power operation, more efficient;

(3) adopt hard the connection or directly welding in the middle of, two ends and main transformer and switch cubicle employing are flexible coupling, and tensile strength greatly, good mechanical property, installation span be big, easy to maintenance, so accident point is few;

(4) according to the tube type bus bridge of customer requirements employing copper, aluminium unlike material, can guarantee economic rationality.

The utility model is specially adapted in 110KV, 220KV, the 500KV transformer station from transformer 6KV, 10KV, 35KV side to the power transformation jockey the indoor high voltage power distributing cabinet, and is especially safe and reliable efficient.

Claims (1)

1, compound semi-insulating copper, aluminum tube bus bridge, it is characterized in that copper, aluminum tube bus (6) one ends are connected with transformer side line (1) by terminal expansion joint (2), one termination wall bushing (13), the centre is held by carriage (5) with external connector (8) or middle expansion joint (7) junction, and with fixedly gold utensil (3) is fixing, composite insulation layer (9) is arranged outside copper, the aluminum tube bus (6), and composite insulation layer (9) is made of polytetrafluoroethylene floor (10), bushing (11), semiconductor sleeve pipe (12).