CN206282977U - A kind of buses of insulation tubes attachment means - Google Patents

Abstract

The utility model discloses a kind of buses of insulation tubes attachment means, including two buses of insulation tubes, tube bus connector, tube bus connector is tubular configured joint, external diameter of its internal diameter less than buses of insulation tubes core, more than the external diameter of insulation tube body core material, the internal diameter of tube bus connector is the 1/100 ~ 1/2000 of buses of insulation tubes core external diameter with the difference of the external diameter of buses of insulation tubes core to its external diameter.The core material of the buses of insulation tubes is identical with tube bus connector material.The core two ends of the buses of insulation tubes and tube bus connector inner and outer surfaces have tin coating.The thickness of the tin coating is 2 ~ 10 μm.The tube bus connector entangles buses of insulation tubes core after heating expansion, and interference fit is realized after cooling.At the tube bus connector and buses of insulation tubes and tube bus connector insulation processing is carried out by pyrocondensation insulating sleeve or with other insulating materials.The condition requirement such as the utility model adapts to rated current big, live high humidity, dust degree is high, temperature change is big.

Description

A kind of buses of insulation tubes attachment means

Technical field

The utility model is related to a kind of attachment means of buses of insulation tubes, more particularly to a kind of heating interference of buses of insulation tubes The attachment means of cooperation.

Background technology

With the progress and development of power technology, high current conveying electric energy is more and more universal, causes big exhausted of current capacity Edge pipe bus is widely applied.It is to manufacture out factory is sectional because buses of insulation tubes is hard conductor Afterwards, then ship power transmission and transformation scene and carry out installation connection, middle connector is more.At present between industry inner tube bus and pipe bus Connection mostly all using making single joint form, then fastened with bolt or fastened two branch pipes mother with C-shaped steel-pipe welding Line is closely coupled together, these connected modes, there is problems with：Joint volume is big, and metal material consumes many, installation effectiveness Low, production cost is high, and installation takes up room greatly, and the steel material of use easily forms vortex, and electric energy loss is big, and joint surface Irregularly, out-of-flatness, inconvenience carries out insulation processing, reduces the security reliability of electric equipment operation.Therefore, develop a kind of new Connection method is always the key technology that power industry is badly in need of solving in the middle of type buses of insulation tubes.

The Chinese utility model patent of Application No. 201120017519.2 and 201420428587.1 discloses one kind and adopts Connected with the interference fit of crimping, it locally produces mechanically deform to realize local interference essentially by conductive surface Coordinate, its effective contact surface less, in long-time energization work, easily generates heat, and during crimping, buses of insulation tubes Easily occur crackle and damage at crimping, make joint that fever phenomenon, and this connected mode are also easily produced in energization work And it is insecure, over time, because the elastic stress that mechanically deform is produced is gradually reduced, it is susceptible to loosen or comes off.

Utility model content

The purpose of this utility model is for above-mentioned present situation, it is desirable to provide a kind of joint small volume, easy to connect, connection Firmly, consumptive material is few, electric energy loss is small, surface is convenient for insulation processing, and the insulating tube type busbar attachment means being connected firmly.

The utility model discloses a kind of buses of insulation tubes attachment means, including two buses of insulation tubes, tube bus connector, The tube bus connector is tubular configured joint, and, less than the external diameter of buses of insulation tubes core, its external diameter is more than insulation tube body core for its internal diameter The external diameter of material.

Preferably, for above-mentioned technical proposal, the internal diameter of the tube bus connector and the external diameter of buses of insulation tubes core Difference is the 1/100 ~ 1/2000 of buses of insulation tubes core external diameter.Footpath difference control can ensure that to pipe bus 1/100 ~ 1/2000 The heating and temperature control of joint in a relatively low suitable temperature range, while as needed and conductor diameter size To ensure certain magnitude of interference, the magnitude of interference is too low easily to come off, and the magnitude of interference is too high, then need corresponding heating-up temperature higher, holds Material mechanical physical property is easily caused to change.

Preferably, the core material of the buses of insulation tubes is identical with tube bus connector material, because material of the same race is swollen Swollen coefficient is identical, and in use, the core and tube bus connector of buses of insulation tubes, will not simultaneously with coefficient contraction or expansion Influence is produced on interference fit because of the change of temperature.

The core two ends of the buses of insulation tubes and tube bus connector inner and outer surfaces have tin coating.

The thickness of the tin coating is 2 ~ 10 μm.

The tube bus connector entangles buses of insulation tubes core after heating expansion, and interference fit is realized after cooling.

Pass through pyrocondensation insulating sleeve or exhausted with other at the tube bus connector and buses of insulation tubes and tube bus connector Edge material carries out insulation processing.

Compared with prior art, the beneficial effects of the utility model are：（1）The utility model is by using heating interference The mode of cooperation is attached to buses of insulation tubes with tube bus connector, and simple to operate, joint small volume is connected firmly, and Junction contact surface is uniform, and effective contact area is big, and conductive capability is strong；

（2）By heating interference fit, make buses of insulation tubes and tube bus connector seamless in junction, its surface can be with Conveniently carry out insulating treatment；

（3）The condition such as the utility model adapts to rated current big, live high humidity, dust degree is high, temperature change is big will Ask, while the utility model can formulate unified job instruction, using standardized work, joint efficiency is higher, reduce existing The installment work intensity of field installation personnel；

（4）Joint electric fields uniform, electric energy loss is small, reduces vortex and point discharge, steady so as to reach operation safety Fixed purpose；

（5）Using the connected mode of heating interference fit, make pipe bus and pipe bus junction more aesthetically pleasing, can basis Need, joint is changeable.

Brief description of the drawings

Fig. 1 pipe bus connection structure figures.

In figure：1 buses of insulation tubes core, 2 buses of insulation tubes insulating barriers, 3 tube bus connectors, 4 tube bus connector insulating barriers.

Specific embodiment

Embodiment 1.

Such as Fig. 1, it is female present embodiment discloses a kind of buses of insulation tubes attachment means, including two specification identical insulation tubes Line, the outer layer of buses of insulation tubes core 1 is surrounded by buses of insulation tubes insulating barrier 2, and the two ends of buses of insulation tubes core 1 are according to core diameter Size, have a termination that 2 ~ 20cm exposes, the external diameter of the internal diameter less than buses of insulation tubes core 1 of tube bus connector 3, the pipe The internal diameter of busbar joint is the 1/100 ~ 1/2000 of buses of insulation tubes core external diameter with the difference of the external diameter of buses of insulation tubes core, By carrying out heating expansion to tube bus connector, then buses of insulation tubes termination is inserted into the tube bus connector after heating, so After cooled down, after interference fit is good, tube bus connector insulating barrier 4 is made outside tube bus connector.

Embodiment 2.

Present embodiment discloses a kind of connection method of the bus connecting device of pipe as described in Example 1, comprise the following steps：

（1）Buses of insulation tubes two ends and tube bus connector inner and outer surfaces are cleaned up, burr of polishing, and carried out tin plating Treatment；

（2）Tube bus connector is heated and isothermal holding at a certain temperature, heating and thermal insulation temperature and time root Suitably adjust and control according to the size and tube bus connector expansion status of the magnitude of interference；

（3）When tube bus connector internal diameter is expanded into internal diameter more than pipe bus external diameter under heating and insulation effect, stop Heating and insulation, be gripped tube bus connector middle part by tool holder, and rapid by the insertion of buses of insulation tubes connecting portion To in tube bus connector；

（4）Tube bus connector is cooled down with buses of insulation tubes junction；

（5）Insulation processing is carried out with buses of insulation tubes junction to tube bus connector and tube bus connector after cooling.

Embodiment 3.

It is the copper pipes of Φ 100/90 from buses of insulation tubes conductor, its external diameter is 100mm, and internal diameter is 90mm；Transition joint is The copper pipes of Φ 110/99.8, its external diameter is 110mm, and internal diameter is 99.8mm, buses of insulation tubes conductor coupling portion position and transition joint Inner and outer surfaces have tin coating, and tin coating thickness is 2 ~ 10 μm.The thermal coefficient of expansion of fine copper is 17.7 × 10^-6/℃；By centre Joint metal copper pipe is put into heater, and temperature rises to 300 DEG C, then transition joint metal internal diameter of copper pipe is：99.8+（99.8 ×17.7×10^-6/℃×300℃）=100.33（mm）, 100.33mm than the buses of insulation tubes conductor diameter big 0.33mm of 100mm, Transition joint metal copper pipe inner face is easily inserted in buses of insulation tubes conductor termination, and its magnitude of interference is after cooling：（100-99.8） ÷ 2=0.1mm, the magnitude of interference meets and requires, interference fit is completely embedded, firmly.

Note：The thickness of the tin coating of above-mentioned all embodiments is ignored.

Embodiment of the present utility model is the foregoing is only, patent protection model of the present utility model is not thereby limited Enclose, equivalent structure or equivalent transformation that every utilization the utility model specification and its accompanying drawing content are made, or directly or indirectly With other association areas beyond the utility model, can be considered in scope of patent protection of the present utility model.

Claims (6)

1. a kind of buses of insulation tubes attachment means, including two buses of insulation tubes, tube bus connector, it is characterised in that：The pipe Busbar joint is tubular configured joint, and its internal diameter is less than the external diameter of buses of insulation tubes core, and its external diameter is outer more than insulation tube body core material Footpath；The internal diameter of the tube bus connector is the 1/ of buses of insulation tubes core external diameter with the difference of the external diameter of buses of insulation tubes core 100~1/2000。

2. buses of insulation tubes attachment means according to claim 1, it is characterised in that the core of the buses of insulation tubes Material is identical with tube bus connector material.

3. buses of insulation tubes attachment means according to claim 2, it is characterised in that the core of the buses of insulation tubes Two ends and tube bus connector inner and outer surfaces have tin coating.

4. buses of insulation tubes attachment means according to claim 3, it is characterised in that the thickness of the tin coating is 2 ~10μ m。

5. buses of insulation tubes attachment means according to any one of claim 1 ~ 4, it is characterised in that the pipe bus Joint entangles buses of insulation tubes core after heating expansion, and interference fit is realized after cooling.

6. buses of insulation tubes attachment means according to claim 5, it is characterised in that the tube bus connector and absolutely Insulation processing is carried out by pyrocondensation insulating sleeve at edge pipe bus and tube bus connector.