CN207251134U - Intensive insulation bus duct - Google Patents

Abstract

The utility model discloses some busbars being arranged in parallel in a kind of intensive insulation bus duct, including busbar protecting crust and busbar protecting crust.The busbar includes busbar conductor and the insulating layer being coated on along busbar length direction in busbar conductor, and through hole is provided with busbar conductor.A kind of intensive insulation bus duct of the utility model, by the through hole that heat dissipation is set in busbar conductor, in the intensive insulation bus duct long-time high current continuous firing, through hole can accelerate the circulation with surrounding air inside bus duct, heat inside bus duct is taken out of, so as to effectively reduce the temperature inside bus duct, reduce because of the safety failure that temperature is excessive and triggers.

Description

Intensive insulated busway

technical field

The utility model relates to the field of power transmission, in particular to a dense insulating bus duct.

Background technique

A busbar is arranged in the busway to transmit electric energy, and has the function of collecting and distributing electric power. Through it, the electric energy output by the generator, transformer or rectifier is transmitted to various users or other substations.

Busway has increasingly replaced wires and cables in power transmission trunk line projects. It has been popularized in developed countries abroad, as well as Hong Kong and Macao in my country. In Guangzhou, Guangdong, my country, where the power distribution room of buildings with more than 12 floors goes out, more than 90% of the main lines leading to the floors use bus ducts; 630KVA transformers use bus ducts to power distribution cabinets. Public construction projects in large and medium-sized cities, hotels, and office buildings are also popularized to use bus ducts. Bus ducts are the best choice for indoor power transmission trunk lines with rated voltages below 1000V.

Because the bus duct carries large current and high voltage during the power transmission process, the bus duct products have extremely high requirements on insulation performance and internal heat dissipation, but the existing bus duct is still difficult to meet this requirement.

Utility model content

The main purpose of this utility model is to overcome the deficiencies of the prior art and provide a dense fire-resistant bus duct with excellent insulation and heat dissipation. When the insulated bus duct works continuously with high current for a long time, the through hole can speed up the circulation of the air inside the bus duct and the surrounding air, and take out the heat inside the bus duct, thereby effectively reducing the temperature inside the bus duct and reducing the temperature of the bus duct caused by excessive temperature. caused security failures.

In order to achieve the above object, the utility model adopts the following technical solutions:

A dense insulated busway, including a busbar protective shell and a number of parallel busbars arranged in the busbar protective shell, the busbar includes a busbar conductor and an insulation covering the busbar conductor along the length direction of the busbar layer, characterized in that the busbar conductors are provided with through holes.

Preferably, the conductors of the busbars have a plurality of through-holes, and without affecting the electrical performance, a plurality of through-holes are provided on each busbar, which can effectively reduce the weight of the busway, and at the same time improve the heat dissipation efficiency. high.

Preferably, a heat absorbing material is arranged between the adjacent bus bars, and the heat absorbing material is arranged between the adjacent bus bars to make the internal temperature of the bus bars more stable and the heat conduction better.

Preferably, the gap between the busbar protective shell and several parallel busbars inside the busbar protective shell is filled with heat absorbing material and/or refractory material.

Preferably, the plurality of busbars arranged in parallel are entirely sleeved in a built-in metal shell, and a first filling groove is formed between the built-in metal shell and the plurality of parallel busbars, and the built-in metal shell and the busbars are A second filling groove is formed between the rows of shielding shells.

Preferably, heat absorbing materials and/or refractory materials are arranged in the filling tank.

Preferably, the endothermic material is an inorganic endothermic material formed of one or more of magnesium hydroxide, aluminum hydroxide, potassium aluminum sulfate hydrate, and calcium sulfate hydrate.

Preferably, the refractory material is refractory cotton and/or ceramicized silicone rubber.

Preferably, the insulating layer is formed by winding ceramic silicone rubber composite tape and/or refractory mica tape, or by heat shrinking a heat shrinkable tube.

As mentioned above, the utility model provides through-holes for heat dissipation on the busbar conductors. When the intensive insulated busway continues to work with high current for a long time, the through-holes can speed up the circulation of the inside of the busway and the surrounding air, and the busway The internal heat is carried out, thereby effectively reducing the temperature inside the bus duct and reducing safety failures caused by excessive temperature.

Description of drawings

Fig. 1 is a structural schematic diagram of a dense insulating bus duct of the present invention.

Detailed ways

Embodiments of the present utility model are described in detail below. It should be emphasized that the following descriptions are only illustrative, not intended to limit the scope of the present utility model and its application.

Please refer to Fig. 1, a kind of intensive insulated busway of the present utility model comprises a busbar protective shell 10 and several parallel busbars 20 arranged in the busbar protective shell 10, and said busbar 20 includes a busbar conductor 21 and a The insulating layer 22 covering the busbar conductor in the length direction of the busbar, and the busbar conductor 21 is provided with a heat dissipation through hole 23 .

The busbar protective shell 10 is a protective shell for intensive insulating bus ducts. It is generally a metal shell, such as a steel or iron shell, which has the function of protecting the internal components of the bus duct. In this embodiment, the busbar protective shell 10 consists of Surrounded by four metal plates, two adjacent metal plates are fixed together by bolts 12, and can also be fixed with screws.

The busbar 20 includes a busbar conductor 21 and an insulating layer 22 covering the busbar conductor 21 . The busbar conductor 21 has a plurality of heat dissipation through holes 23, the through holes 23 can speed up the circulation of the inside of the bus duct and the surrounding air, and take out the heat inside the bus duct, so as to achieve the purpose of effectively reducing the temperature inside the bus duct. The insulating layer 22 mainly plays an insulating role for the busbar conductor 21, and preferably also has a fire-resistant function. It is preferably a ceramic silicone rubber composite tape, and of course it can also be a fire-resistant mica tape. The insulating layer 22 is made of ceramic silicone rubber composite tape, which can play a role of flame retardant and fire resistance. 21, so as to protect the busbar conductor 21 located in the ceramic silicone rubber composite belt from damage, ensure the normal use function of the busbar 20, and improve the safety of the product.

In this embodiment, several busbars 20 arranged in parallel are integrally set in a built-in metal shell 30, and a first filling groove 31 is formed between the built-in metal shell 30 and the protective shell 10 of the parallel arranged busbars. A second filling groove 32 is formed between the built-in metal shell 30 and the busbar 20. According to the application requirements of different places, the first filling groove 31 and or the second filling groove 32 are filled with different functional materials, such as heat absorbing Materials and/or refractory materials, which also have the function of heat conduction and/or fire resistance under the condition of high heat dissipation for densely insulated bus ducts.

To sum up, the utility model provides through-holes for heat dissipation on the busbar conductors. When the dense insulating busway works continuously with high current for a long time, the through-holes can speed up the circulation of the inside and surrounding air of the busway, and the busbar The heat inside the slot is taken out, thereby effectively reducing the temperature inside the bus duct, and according to different application places, it can also conveniently have the function of heat conduction and/or fire resistance under the condition of high heat dissipation.

The above content is a further detailed description of the utility model in combination with specific/preferred embodiments, and it cannot be assumed that the specific implementation of the utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the utility model belongs, on the premise of not departing from the concept of the utility model, they can also make some substitutions or modifications to the described embodiments, and these substitutions or modifications should be It is deemed to belong to the protection scope of the present utility model.

Claims (8)

1. a kind of intensive insulation bus duct, including busbar protecting crust be arranged on some parallel busbars in busbar protecting crust, The busbar includes busbar conductor and the insulating layer being coated on along busbar length direction in busbar conductor, it is characterised in that described Through hole is provided with busbar conductor.

2. intensive insulation bus duct according to claim 1, it is characterised in that：There is multiple pass through in the busbar conductor Through hole.

3. intensive insulation bus duct according to claim 1, it is characterised in that：Suction is provided between the adjacent busbar Hot material.

4. intensive insulation bus duct according to claim 1, it is characterised in that：The busbar protecting crust is protected with busbar Gap filling in shell between some busbars being arranged in parallel has heat-absorbing material and/or refractory material.

5. intensive insulation bus duct according to claim 1, it is characterised in that：Some busbars for being arranged in parallel are whole Body is placed in a built-in metal shell, should formed with the first filling slot between the built-in metal shell and the busbar being arranged side by side Formed with the second filling slot between built-in metal shell and the busbar protecting crust.

6. intensive insulation bus duct according to claim 5, it is characterised in that：Heat absorption material is provided with the filling slot Material and/or refractory material.

7. according to claim 3 or 4 or 6 any one of them intensive insulation bus ducts, it is characterised in that：The heat-absorbing material For inorganic endothermic material.

8. intensive insulation bus duct according to any one of claims 1 to 6, it is characterised in that：The insulating layer is pottery Porcelain SiClx rubber composite belt and/or the insulating layer that fire-resistant isinglass belt is entwined or heat-shrink tube is formed through thermal contraction.