CN104900340A - Insulated pipe type bus production method - Google Patents
Insulated pipe type bus production method Download PDFInfo
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- CN104900340A CN104900340A CN201510243587.3A CN201510243587A CN104900340A CN 104900340 A CN104900340 A CN 104900340A CN 201510243587 A CN201510243587 A CN 201510243587A CN 104900340 A CN104900340 A CN 104900340A
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Abstract
The present invention relates to an insulated pipe type bus production method which comprises a step of taking a metal tube conductor and winding a layer of glass fiber cloth belt around the surface of the conductor, a step of sleeving the conductor with a heat-shrinkable sleeve pipe, carrying out vacuum pumping processing on the space between the heat-shrinkable sleeve pipe and the conductor and pouring epoxy resin into the cavity between the heat-shrinkable sleeve pipe and the conductor from the resin poring port on the conductor until the resin is full, a step of curing the epoxy resin, a step of winding a layer of shielding copper tape around the outer side wall of the heat-shrinkable sleeve pipe, and a step of packaging an insulating sheath around the outer side wall of the shielding copper tape layer to obtain the prepared product. The method has the advantages that when the used is used to make an insulated pipe type bus, the heat-shrinkable sleeve pipe is added, firstly the vacuum pumping processing is carried out, then the epoxy resin is poured and the drying is carried out, by using the characteristic that the heat-shrinkable sleeve pipe shrinks in the condition of heating, redundant epoxy resin and air are discharged, through the processing method, the generation of pores can be effectively reduced, and a breakdown phenomenon is avoided.
Description
Technical field
The present invention relates to insulating tube type busbar and manufacture field, particularly a kind of insulating tube type busbar production method.
Background technology
Along with China's rapid development of economy, the demand of entire society to electric power increases day by day.Current 110kV and 220KV electric substation low-pressure side all adopts 10kV, 35kV electric pressure, and along with the increasing of main transformer capacity, the rated current of step down side inlet wire side is also continuing to increase.Conventional rectangular bus technically with the more and more difficult requirement meeting bus heating and short-circuit electromotive force in structure, cause the increase of supplementary load loss, skin effect coefficient thus, cause the decline of the ability of damming, CURRENT DISTRIBUTION uneven.Especially separate unit main transformer capacity be 180MVA and above time, main transformer 10kV outgoing line side not only has electric power problem, the heating problem of bus bridge itself, also has the heating problem that the reinforcing bar near bus bridge post insulator, Steel Structure and bus bridge in coagulation upper prop, basis causes in elect magnetic field inductive loop.Insulation copper pipe bus is as the substitute of rectangular bus bar.It has following characteristics: ampacity is large: the main body of insulation copper pipe bus is hollow copper tubing or aluminium-alloy pipe, and surface area is large, relative conventional rectangular bus, and its conductive surface electric current distribution is even, and maximum amount determines electric current can reach 12000A.Good insulation preformance: insulation copper pipe bus adopts closed shield insulation mode, and earthing of casing current potential is zero, and bus surface electric field distribution is even, and electrical insulation properties is strong.Can directly by cable trough and cable interlayer.Mechanical strength is high: insulation copper pipe busbar body allowable stress is 4 times of rectangular bus bar, and the short circuit current that can bear is large, and mechanical strength is high, and bus is supported, and span is maximum reaches 8 meters.Good heat dissipation, temperature rise are low: insulation copper pipe bus is hollow conductor, and bus two ends have ventilation hole, and internal diameter air channel can self-assembling formation hot-air convection, and radiating condition is compared well conventional bus bar and will be got well.Loss is low: to determine its surperficial skin effect coefficient low for the profile of insulation copper pipe bus, and Kf≤1, AC resistance is little, and thus the power loss of bus is little.The dielectric loss of the insulating barrier of cross-linked shielding isolated bus is lower than 0.01%.Insulating material heat-resistance coefficient is high: the main insulation material of cross-linked shielding insulation tubular bus is polytetrafluoroethylene, there are excellent electric property and chemical stability, normally can work in-200 DEG C ~+200 DEG C, dielectric loss is little, fire-retardant, ageing-resistant, coordinate other insulating material, Shi Shou Ming≤30 year of product.Anti-electric vibration resistance is strong: Dynamic stability result of the test surface, and the copper pipe of voltage 10kV, rated current 4000A is female, can bear 63kA(4s) short-circuit current rush.Bus can directly be fixed on Steel Structure or on concrete support by it, cancels wall bushing and post insulator, has stronger shock resistance.Not by environmental interference, reliability is high: the every of insulation copper pipe bus is lock shield insulation mutually, innerly produces without condensation, and eliminates extraneous moisture, and dust and the ground connection caused by foreign object and phase fault, run and have reliability highly.Bus framework is simple and clear, it is clear, easy for installation to arrange, maintenance workload is few.
Traditional insulating tube type busbar production method is first by after glass fiber impregnated, then carries out vacuumizing process.By such method in the process of producing, easily there is micropore, can puncture, shortcomings such as being placed with impact of playing a game.
Summary of the invention
The technical problem to be solved in the present invention is to provide one and prevents micropore, the insulating tube type busbar production method that punch-through occurs.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of insulating tube type busbar production method, and its innovative point is: described step is:
A) strip winding: first, gets a metal cast conductor, has greasing mouth and an exhaust outlet at the two ends of conductor respectively, at the surface wrap layer of glass strap of conductor;
B) encapsulation: be set with a heat-shrinkable T bush on the lateral wall of conductor being wound with strap, and utilize and dry rifle and heating is carried out to heat-shrinkable T bush make it shrink, then, then vacuumize process between heat-shrinkable T bush and conductor, make heat-shrinkable T bush be close on the lateral wall of conductor;
C) greasing: in vacuum degree under the state of the vacuum of-90--100KPa, from the greasing mouth on conductor to infusion epoxy resin in the cavity between heat-shrinkable T bush and conductor, until resin is full of;
D) solidify: process is cured to epoxy resin, in the process of solidification, by discharges such as epoxy resin unnecessary between heat-shrinkable T bush and conductor and gases;
E) strip winding: be wound around one deck shielding copper strips on the lateral wall of heat-shrinkable T bush;
F) jacket: pack an insulating sleeve again at the lateral wall of shielding copper strips layer, obtained finished product.
Further, described conductor can be copper conductor, also can be aluminium conductor.
Further, also set up between described step c and steps d one to vacuumize, vibration processing, its concrete steps are: be placed in by conductor on ultrasonic oscillator, ultrasonic wave is utilized to be smashed by the gas be attached on conducting wall, vibration frequency controls at 1000-3000r/min, the time of vibration is 2-10min, and vacuumizes process from the exhaust outlet of conductor between conductor and heat-shrinkable T bush, thus is discharged by the gas smashed.
Further, the model of the heat-shrinkable T bush adopted in described step b is ZRRAXSLEEVESBI300/350.
Further, in described steps d, the temperature of solidification is normal temperature state, and the time of solidification is between 2-7 hour.
Further, in described steps d, the temperature of solidification is 70 DEG C, and the time of solidification is 8 hours.
The invention has the advantages that: utilize this method when making insulating tube type busbar, increase by a heat-shrinkable T bush, first carry out true process of finding time, and then injection ring epoxy resins, and then dry, utilize heat-shrinkable T bush shrinkable characteristic in case of heating, unnecessary epoxy resin and air are discharged, by such processing method, effectively can reduce the generation of micropore, avoid the generation of punch-through.
Vacuumize by setting up, vibration processing step, make between heat-shrinkable T bush and conductor, to reach good closely knit effect, reduce or stop bubble generation.
Embodiment
Embodiment 1
Insulating tube type busbar production method of the present invention comprises following step:
The first step, strip winding: first, gets a metal cast conductor, has greasing mouth and an exhaust outlet at the two ends of conductor respectively, at the surface wrap layer of glass strap of conductor.In the present embodiment, conductor can be copper conductor, also can be aluminium conductor.
Second step, encapsulation: be set with a heat-shrinkable T bush on the lateral wall of conductor being wound with strap, utilizes baking rifle to carry out heating to heat-shrinkable T bush and makes it shrink, then, vacuumize process between heat-shrinkable T bush and conductor again, heat-shrinkable T bush is close on the lateral wall of conductor.In the present embodiment, the adoptable model of heat-shrinkable T bush is the heat-shrinkable T bush of ZRRAXSLEEVESBI300/350.
3rd step, greasing: in vacuum degree under the state of the vacuum of-90--100KPa, from the greasing mouth on conductor to infusion epoxy resin in the cavity between heat-shrinkable T bush and conductor, until resin is full of.
4th step, solidification: be cured process to epoxy resin, in the process of solidification, by discharges such as epoxy resin unnecessary between heat-shrinkable T bush and conductor and gases.
If the temperature of solidification is normal temperature, then the time of solidifying, if the temperature of solidification is 70 DEG C, the time of solidification was 8 hours between 2-7 hour.
5th step, strip winding: be wound around one deck shielding copper strips on the lateral wall of heat-shrinkable T bush.
6th step, jacket: pack an insulating sleeve again at the lateral wall of shielding copper strips layer, obtained finished product.
By the insulating tube type busbar that above-mentioned steps is produced, it effectively decreases the generation of micropore, but, the tube wall of heat-shrinkable T bush and conductor also have the micropore of trace produce.
Embodiment 2
Insulating tube type busbar production method of the present invention comprises following step:
The first step, strip winding: first, gets a metal cast conductor, has greasing mouth and an exhaust outlet at the two ends of conductor respectively, at the surface wrap layer of glass strap of conductor.In the present embodiment, conductor can be copper conductor, also can be aluminium conductor.
Second step, encapsulation: be set with a heat-shrinkable T bush on the lateral wall of conductor being wound with strap, utilizes baking rifle to carry out heating to heat-shrinkable T bush and makes it shrink, then, vacuumize process between heat-shrinkable T bush and conductor again, heat-shrinkable T bush is close on the lateral wall of conductor.In the present embodiment, the adoptable model of heat-shrinkable T bush is the heat-shrinkable T bush of ZRRAXSLEEVESBI300/350.
3rd step, greasing: in vacuum degree under the state of the vacuum of-90--100KPa, from the greasing mouth on conductor to infusion epoxy resin in the cavity between heat-shrinkable T bush and conductor, until resin is full of.
4th step, vacuumize, vibration processing, conductor is placed on ultrasonic oscillator, ultrasonic wave is utilized to be smashed by the gas be attached on conducting wall, vibration frequency controls at 1000-3000r/min, the time of vibration is 2-10min, and vacuumizes process from the exhaust outlet of conductor between conductor and heat-shrinkable T bush, thus is discharged by the gas smashed.
5th step, solidification: be cured process to epoxy resin, in the process of solidification, by discharges such as epoxy resin unnecessary between heat-shrinkable T bush and conductor and gases.
If the temperature of solidification is normal temperature, then the time of solidifying, if the temperature of solidification is 70 DEG C, the time of solidification was 8 hours between 2-7 hour.
6th step, strip winding: be wound around one deck shielding copper strips on the lateral wall of heat-shrinkable T bush.
7th step, jacket: pack an insulating sleeve again at the lateral wall of shielding copper strips layer, obtained finished product.
By greasing and solidification between set up vacuumize, vibration processing, make between heat-shrinkable T bush and conductor, to reach good closely knit effect, reduce or stop bubble generation.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (3)
1. an insulating tube type busbar production method, is characterized in that: described step is:
A) strip winding: first, gets a metal cast conductor, has greasing mouth and an exhaust outlet at the two ends of conductor respectively, at the surface wrap layer of glass strap of conductor;
B) encapsulation: be set with a heat-shrinkable T bush on the lateral wall of conductor being wound with strap, and utilize and dry rifle and heating is carried out to heat-shrinkable T bush make it shrink, then, then vacuumize process between heat-shrinkable T bush and conductor, make heat-shrinkable T bush be close on the lateral wall of conductor;
C) greasing: in vacuum degree under the state of the vacuum of-90--100KPa, from the greasing mouth on conductor to infusion epoxy resin in the cavity between heat-shrinkable T bush and conductor, until resin is full of;
D) solidify: process is cured to epoxy resin, in the process of solidification, by discharges such as epoxy resin unnecessary between heat-shrinkable T bush and conductor and gases;
E) strip winding: be wound around one deck shielding copper strips on the lateral wall of heat-shrinkable T bush;
F) jacket: pack an insulating sleeve again at the lateral wall of shielding copper strips layer, obtained finished product.
2. insulating tube type busbar production method according to claim 1, is characterized in that: described conductor can be copper conductor, also can be aluminium conductor.
3. insulating tube type busbar production method according to claim 1, it is characterized in that: also set up between described step c and steps d one to vacuumize, vibration processing, its concrete steps are: be placed in by conductor on ultrasonic oscillator, ultrasonic wave is utilized to be smashed by the gas be attached on conducting wall, vibration frequency controls at 1000-3000r/min, the time of vibration is 2-10min, and vacuumizes process from the exhaust outlet of conductor between conductor and heat-shrinkable T bush, thus is discharged by the gas smashed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510243587.3A CN104900340B (en) | 2015-05-14 | 2015-05-14 | Insulated pipe type bus production method |
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| CN201510243587.3A CN104900340B (en) | 2015-05-14 | 2015-05-14 | Insulated pipe type bus production method |
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| CN104900340B CN104900340B (en) | 2017-01-11 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105825951A (en) * | 2016-05-23 | 2016-08-03 | 长葛市恒瑞电瓷电器有限公司 | Insulated tubular bus-bar |
| CN106099779A (en) * | 2016-06-24 | 2016-11-09 | 湖北大学 | A kind of high voltage tolerant input electric pipe and preparation method thereof |
| CN106671443A (en) * | 2015-11-05 | 2017-05-17 | 空中巴士运营有限公司 | Method, forming and injection tool for manufacturing aperture surrounding frame for aircraft fuselage, and the frame obtained thereof |
| CN107591635A (en) * | 2016-07-06 | 2018-01-16 | 抚顺凯特利机电化工有限公司 | Increase the toughness of resin in casting type bus with glass fibre |
| CN107731417A (en) * | 2017-10-10 | 2018-02-23 | 江苏众众热能科技有限公司 | A kind of buses of insulation tubes production method |
| CN109754952A (en) * | 2018-12-29 | 2019-05-14 | 江苏沃能电气科技有限公司 | A kind of insulating tube type busbar production method |
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| CN101339824A (en) * | 2008-08-14 | 2009-01-07 | 上海西邦电气有限公司 | Composite insulating tube type bus and method for preparing the same |
| CN101982862A (en) * | 2010-09-14 | 2011-03-02 | 中国科学院电工研究所 | Vacuum impregnation device of Nb3Sn superconducting coil and impregnation method thereof |
| CN103077770A (en) * | 2013-01-24 | 2013-05-01 | 张选 | Insulating tubular generatrix and production method for same |
| CN103117117A (en) * | 2013-03-11 | 2013-05-22 | 孙闻峰 | Insulation tube bus and manufacturing method thereof |
| CN203150923U (en) * | 2013-03-20 | 2013-08-21 | 江苏帝一集团有限公司 | Insulated bus connecting device for ring network cabinet |
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| JPS54145987A (en) * | 1978-05-09 | 1979-11-14 | Hitachi Cable Ltd | Method of producing power cable |
| CN101339824A (en) * | 2008-08-14 | 2009-01-07 | 上海西邦电气有限公司 | Composite insulating tube type bus and method for preparing the same |
| CN101982862A (en) * | 2010-09-14 | 2011-03-02 | 中国科学院电工研究所 | Vacuum impregnation device of Nb3Sn superconducting coil and impregnation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106671443A (en) * | 2015-11-05 | 2017-05-17 | 空中巴士运营有限公司 | Method, forming and injection tool for manufacturing aperture surrounding frame for aircraft fuselage, and the frame obtained thereof |
| CN105825951A (en) * | 2016-05-23 | 2016-08-03 | 长葛市恒瑞电瓷电器有限公司 | Insulated tubular bus-bar |
| CN106099779A (en) * | 2016-06-24 | 2016-11-09 | 湖北大学 | A kind of high voltage tolerant input electric pipe and preparation method thereof |
| CN107591635A (en) * | 2016-07-06 | 2018-01-16 | 抚顺凯特利机电化工有限公司 | Increase the toughness of resin in casting type bus with glass fibre |
| CN107731417A (en) * | 2017-10-10 | 2018-02-23 | 江苏众众热能科技有限公司 | A kind of buses of insulation tubes production method |
| CN109754952A (en) * | 2018-12-29 | 2019-05-14 | 江苏沃能电气科技有限公司 | A kind of insulating tube type busbar production method |
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| CN104900340B (en) | 2017-01-11 |
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