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Solid bus slot with high strength

A busway, high-strength technology, applied in the field of busway, can solve the problems of easy rust of metal casing, short circuit of busway, low impact strength, etc.

Inactive Publication Date: 2009-10-07
JIANGSU JIANGCHENG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]At present, the common busway usually includes a metal casing and a conductor installed in the metal casing. The metal casing uses screws or rivets to connect the left and right side panels with the upper and lower covers. Since the shell of the bus duct of this structure is made of metal material, the expansion coefficient of the metal shell is different from that of the conductor, so it is easy to cause the metal shell and the conductor to "extend and bite" each other, destroying the insulation of the bus duct protection, so that the short circuit of the busway occurs, thereby reducing the safety performance of the busway, and because the metal shell is easy to rust, therefore, the busway cannot work under water and in an environment with high humidity; in addition, its impact strength is also relatively small , and the low temperature resistance is poor, and the protection level can only reach IP54

Method used

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  • Solid bus slot with high strength

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Experimental program
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Effect test

Embodiment 1

[0040] Firstly, polybutadiene diol was heated to 80°C for 6 hours under a vacuum of 0.05Mpa to dehydrate, and then toluene diisocyanate was put into the dehydrated polybutadiene diol reaction kettle, so that -NCO and -OH The molar ratio is 1.9: 1; then when heated to 75°C, heat preservation reaction for 3 hours, at this time, the viscosity becomes larger and the prepolymer has formed; add 1% γ-aminopropyltriethoxysilane in the reaction kettle, Stir well. Add dry 200-mesh mica powder and 200-mesh quartz sand powder in an amount of 4%, and stir evenly; add 8% dry flame retardant decabromodiphenyl ether, stir well, and vacuum degassing at the same time; add 0.1% UV absorber 2-(2'-hydroxy-3', 5'-di-tert-butylphenyl)-5-chlorobenzotriazole; add 0.5% antioxidant 1010 and 1% azo dye Stir well; then break the vacuum, add the calculated amount of 1,4-butanediol and stir evenly, then vacuum degassing. Finally, pour the above composite material into the mold with the copper bars install...

Embodiment 2

[0042] Firstly, polybutadiene diol was heated to 85°C for 5 hours under a vacuum of 0.08Mpa to dehydrate, and then toluene diisocyanate was put into the dehydrated polybutadiene diol reaction kettle, so that -NCO and -OH The molar ratio is 2.1:1; then heated to 78°C and kept warm for 3 hours, at this time, the viscosity becomes larger and the prepolymer has been formed; add 1.5% of γ-glycidyl etheroxypropyl trimethoxy to the reaction kettle Silane, stir well. Add dry 400-mesh mica powder and 300-mesh quartz sand powder in an amount of 10%; add 2% dioctyl phthalate and stir evenly; add 35% dry flame retardant microencapsulated red phosphorus, and stir Evenly, vacuum degassing at the same time; add 0.3% of ultraviolet absorber 2-hydroxy-4-methoxybenzophenone, then add 1% antioxidant 264 and 0.5% phthalocyanine blue and stir well; then break the vacuum, add The calculated amount of molten 3,3'-dichloro-4,4'-diamino-diphenylmethane was stirred evenly, and then vacuum degassed. F...

Embodiment 3

[0044] Firstly, polybutadiene diol was heated to 90°C for 7 hours under a vacuum of 0.1Mpa to dehydrate, and then toluene diisocyanate was put into the dehydrated polybutadiene diol reaction kettle, so that -NCO and -OH The molar ratio is 2.5:1; then heat it to 80°C and keep it warm for 4 hours. At this time, the viscosity becomes larger and the prepolymer has been formed; add 0.5% anilinomethyltriethoxysilane into the reaction kettle and stir evenly . Add dry 500-mesh mica powder and 600-mesh quartz sand powder in an amount of 20%, and stir evenly; add 20% dry flame retardant antimony trioxide, stir well, and vacuum debubble at the same time; add 0.4% ultraviolet light Absorbent 2,4-dihydroxybenzophenone; then add 2% antioxidant 1010 and 1.5% azo dye and stir; then break the vacuum, add the calculated amount of 1,6-butanediol and stir evenly, then Vacuum degassing. Finally, pour the above composite material into the mold with the copper bars installed, and then vacuumize to...

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Abstract

The invention discloses a solid bus slot with high strength which consists of a shell made of the composite materials, the composition of the composite materials and a preparation method thereof. By adopting the bus slot, as the shell of the bus slot made of the composite materials, the bus slot has good hydrolytic resistance and good anti-salt fog performance. The withstand voltage is as high as 5000V or more; and as the linear expansion coefficient of the composite materials are very close to the conductor, the situation of 'extended bite' with each other can not appear due to the mixed-assembled with a plurality of materials with different expansion coefficients, thus improving the insulation protection of the bus slot and having very high insulation performance. The mechanical strength of the bus slot made of the composite materials is high, which can withstand 15 Joules impact strength. The overload capability of the bus slot is strong, the anti inter-phase short circuit ability is good, the low temperature resistance is good, the protection grade can achieve IP68, and the use life is longer than that of the metal.

Description

technical field [0001] The invention relates to a bus duct, in particular to a high-strength solid bus duct, which belongs to the technical field of electric transmission equipment. Background technique [0002] In the power supply line industry, the long life, high reliability and operational safety of transmission main lines are the most concerned issues. With the advantages of convenient installation and flexible branching, busway has become an important component in the field of low-voltage power transmission and distribution instead of the traditional cable power transmission and distribution method. [0003] At present, the common busway usually includes a metal shell and a conductor installed in the metal shell. The metal shell is formed by connecting and fixing the left and right side panels with the upper and lower cover plates with screws or rivets. Since the shell of the busway with this structure is metal Because the expansion coefficient of the metal shell is d...

Claims

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Application Information

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IPC IPC(8): H02G5/00C08G18/76C08G18/65C08G18/62C08K13/02C08K3/34C08K5/06C08K5/3475C08K9/10C08K3/02C08K3/22
Inventor 陈定选
Owner JIANGSU JIANGCHENG ELECTRIC
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