CN2227372Y

CN2227372Y - Common case insulation sealed bus

Info

Publication number: CN2227372Y
Application number: CN 95230704
Authority: CN
Inventors: 周任劳
Original assignee: FUXIN SEALED BUS FACTORY
Current assignee: FUXIN SEALED BUS FACTORY
Priority date: 1995-04-01
Filing date: 1995-04-01
Publication date: 1996-05-15
Anticipated expiration: 2005-04-01

Abstract

The utility model belongs to a bus for high-voltage power distribution, particularly a common case insulating sealed bus, which is used in a power transmission and transformation system with the voltage which is lower than 10.5 kV, and the electric current is 1, 000 to 8, 000 A, and the common case insulating sealed bus is used for the power transmission and transformation. Bus conductors in a box is used for coating a fire-retardant thermal shrinkage sleeve tube; an insulating pad is arranged among the bus conductors and an insulating bracket; the bus conductors in the box are equidistantly and in parallel suspended above the insulating bracket, and air passages are formed among the gaps. Compared with the common case sealed bus, the common case insulating sealed bus has the double insulating and protecting structures of air and a sheath, and the insulating property can be improved by more than 50%.

Description

Be total to case insulation enclosed busbar

The utility model belongs to high pressure power transmission and distribution bus, particularly a kind of power plant that is used for, and in the power transmission and transformation system below the voltage 10.5KV, electric current 1,000-8, the common case insulation enclosed busbar that the power transmission and transformation of 000A are used.

At present, at the used common case enclosed busbar of high pressure electrical power trans mission/distribution system, its bus-bars conductor uses insulator built on stilts, be all insulation with the interval air duct, so the insulation property of bus is lower, is subjected to the natural climate environmental influence.Use in adverse circumstances such as moist, the salt fog and the gases that is corrosive, easily dewfall, collection dirt and cause ground connection and short circuit accident.

The purpose of this utility model is to overcome above technical deficiency, provides a kind of convenient maintenance to install, insulation property, the common case insulation enclosed busbar that weather resistance is good.

Task of the present utility model is, the bus-bars conductor of case insulation enclosed busbar clads flame-retardant heat shrinkable sleeve altogether, between bus-bars conductor and insulating support insulation cushion, parallel the making somebody a mere figurehead on insulating support of squares such as bus-bars conductor in the casing, it forms air duct at interval.Compare with being total to the case enclosed busbar, have air and sheath double insulation protection structure, strengthened the insulation protection performance of bus-bars conductor.

Isolated bus conductor supporting structure adopts high-intensity resin glass fiber fabric swatch to do support.Compare machinery and the electric property that has strengthened the Short Circuit withstand impact with porcelain insulator, on every group of insulating support, have ventilation hole.Help the conductor heat radiation, and increased creepage distance.On every group of insulating support, be added with heat-resisting neoprene liner, not only prevent the destruction of insulating support corner angle, also play simultaneously and reduce vibrations, reduce the effect of bus operation noise the pyrocondensation insulating case.

Specify with by way of example below in conjunction with accompanying drawing.

Fig. 1 shows common case insulation sealing bus structure figure.

Fig. 2 shows that common case insulation enclosed busbar A is to view.

Fig. 3 shows common case insulation enclosed busbar rectangular bus bar structure chart.

Among the figure, the 1-casing; The 2-liner; The 3-insulating support; The 4-bus-bars conductor; 5-insulate heat shrink sleeve

Fig. 1 is case insulation sealing bus structure figure altogether, and casing (1) be a rectangular configuration, and top cover is connected by screw with casing (1), can prevent dust, rainproof, prevent the animal intrusion.The interior three-phase bus conductor of casing (1) (4) is a plane arrangement structure.

Fig. 2 is total to the A of case insulation enclosed busbar to view, and the bus-bars conductor (4) in casing (1) is a tubular, at the outside cladding of bus-bars conductor (4) fire retardant insulating thermal contraction casing tube (5); On the built on stilts insulating support (3) that is laid in of three-phase bus conductor (4) equidistant parallel, it forms air duct, ventilation and heat at interval.The supporting part of last lower carriage and bus-bars conductor (4) is a circular arc, symmetric support, and lining prevents to damage insulating sleeve (5) with annular neoprene insulating cell (2) between support (3) and bus-bars conductor (4), reduces vibrations, reduces bus operation noise.

Bus-bars conductor (4) among Fig. 3 in casing (1) is a rectangle, cladding fire retardant insulating thermal contraction sheath (5) outside bus-bars conductor (4), on the parallel built on stilts channel insulation support (3) that is laid in of squares such as three-phase bus conductor (4) biserial, upper and lower support symmetric support, lining is with flute profile neoprene liner (2) between support (3) and bus-bars conductor.

Be total to case insulation enclosed busbar adopts flame-retardant heat shrinkable sleeve on bus-bars conductor structure, set up, constitute double insulation protection structure by the insulating support equidistant parallel, design science, good insulation preformance, the case enclosed busbar compares its insulation property raising more than 50% together.

Be total to case insulation enclosed busbar technical parameter

Rated voltage 0.5-10.5KV rated current 1,000-8,000A

Frequency 50-60HZ ambient temperature ± 40 ℃

Antiseismic earthquake intensity 7 degree relative humidity＞85%

The long-term operation continuously of operational mode

Case insulation sealing bus insulating property is good altogether, weatherability is strong, and is safe and reliable, fault-resistant performance height, the area of be applicable to that environment is abominable, pollutions, humidity, dust storm, dust, salt fog are bigger and the power transmission and distribution project in place, fire-retardant, insulating reliability is higher than the common case enclosed busbar of routine.

Claims

1. common case insulation enclosed busbar that in casing (1) internal channel, sets up bus-bars conductor (4), it is characterized in that casing (1) is rectangular configuration, top cover is connected by screw with casing (1), bus-bars conductor (4) cladding flame-retardant heat shrinkable sleeve (5) in the casing (1), equidistant parallel is maked somebody a mere figurehead on insulating support (3), and it forms air duct at interval.

2. the insulation of case altogether enclosed busbar according to claim 1 it is characterized in that the bus-bars conductor (4) in the casing (1) is tubular or rectangle, and the insulation cushion (2) between the insulating support (3) is annular or flute profile.

3. altogether case insulation enclosed busbar according to claim 1, it is characterized in that insulating support (3) by put on the shelf, undercarriage forms, is circular arc or flute profile with bus-bars conductor (4) supporting part in the middle of the support (3).