CN204271580U - Intensive insulation bus slot - Google Patents

Abstract

The utility model discloses a kind of intensive insulation bus slot, comprises busbar protecting crust and is arranged at the busbar unit in busbar protecting crust.Busbar unit comprises multiple busbar, and busbar comprises the insulating barrier of busbar conductor and this busbar conductor coated.Multiple busbar side by side parallel arranges formation entirety.Circulating line is provided with in intensive insulation bus slot, water or gas is connected with in circulating line, heat in concentration bus duct is passed to circulating line and takes heat out of concentration bus duct by circulating line, play cooling effect, this can improve the fire resistance of bus duct, improve intensive insulation bus slot continued power ability in a fire, extend the intensive insulation bus slot continued power time in a fire.

Description

Intensive Insulated Busway

technical field

The utility model relates to a dense insulating bus duct.

Background technique

A plurality of busbars are arranged in the busway to transmit electric energy and have 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 fire resistance performance, but the existing bus duct is still difficult to meet the fire resistance performance requirements.

Utility model content

The purpose of the utility model is to provide a dense insulating bus duct with excellent insulation and fire resistance.

In order to achieve the above purpose, the utility model provides a dense insulated busway, which includes a busbar protective shell and a busbar unit arranged in the busbar protective shell; the busbar unit includes a plurality of busbars, and the busbar The row includes a busbar conductor and an insulating layer covering the busbar conductor. The plurality of busbars are arranged side by side in parallel to form a whole; the densely insulated busbar groove is provided with a circulation pipe, and water or gas is passed through the circulation pipe .

As mentioned above, the utility model is equipped with a circulation pipe in the intensive insulating bus duct, and water or gas is passed through the circulation pipe, and the heat in the intensive bus duct is transferred to the circulation pipe and the heat is taken out of the intensive bus duct through the circulation pipe , so that it can play a cooling role, which can improve the fire resistance of the busway, improve the continuous power supply capacity of the densely insulated busway in a fire, and prolong the continuous power supply time of the densely insulated busway in a fire.

Description of drawings

Fig. 1 is a schematic diagram of the transverse cross-sectional structure of Embodiment 1 of the dense insulating bus duct of the present invention.

Detailed ways

In order to describe the technical content, component structure, achieved purpose and effect of the present utility model in detail, it will be described in detail below in conjunction with the accompanying drawings.

Example 1

Please refer to FIG. 1 , the dense insulated busway of the present invention is roughly in the shape of a cuboid, including a busbar protective shell 10 and a busbar unit arranged in the busbar protective shell 10 .

The busbar protective shell 10 is a protective shell for intensive insulated 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 It is surrounded by four metal plates 11, and two adjacent metal plates are fixed together by bolts 12, of course, they can also be fixed by screws.

The busbar unit includes a plurality of busbars 20 . The busbar 20 includes a busbar conductor 21 and an insulating layer 22 covering the busbar conductor 21 . The insulating layer 22 mainly plays an insulating role on the busbar conductor 21, and can be a heat-shrinkable tube, preferably a refractory material, such as ceramic silicone rubber composite tape, refractory mica tape or a mixture of the two. In this embodiment, the insulating layer 22 is made of ceramic silicon rubber composite tape, which can play a flame-retardant and fire-resistant role, and has excellent flame-retardant and fire-resistant properties. Even if it burns beyond the fire-resistant limit, it can still be ablated to form a hard protective shell, which can prevent flame Further extending to the busbar conductor 21, thereby protecting the busbar conductor 21 located in the ceramic silicone rubber composite tape from being damaged, ensuring the normal use function of the busbar 20, and improving the safety of the product.

The plurality of busbars 20 are arranged side by side in parallel to form a whole as a busbar unit. A circulation pipeline 30 is arranged between the busbar protective shell 10 and the busbar unit, and there is flowing water W or gas in the circulation pipeline 30. In this embodiment, the circulation pipeline 30 is arranged between the busbar protective shell 10 and the busbar unit between. Of course, the circulation pipe 30 may also be arranged between adjacent bus bars 20 of the bus bar unit.

In addition, the circulation pipe 30 is not limited to the above-mentioned structural shape, and may also be a plurality of small circulation pipes.

Preferably, the densely insulated bus duct further includes at least one air supply and heat dissipation device, and the air supply and heat dissipation device is arranged at one end of the densely insulated bus duct or in the densely insulated bus duct. This further improves the cooling effect.

Example 2

This embodiment is similar to Embodiment 1, the difference is that: the dense insulating busway also includes a metal shell, the metal shell is set inside the busbar protective shell, the busbar unit is set in the metal shell, and the metal shell and the busbar unit There is a circulation pipeline between the metal shell and the protective shell of the busbar. There is flowing water or gas in the circulation pipe.

It is worth noting that this embodiment can also have other changes, such as covering the metal shell with refractory or ceramic powder, and setting a circulation pipeline between the metal shell and the busbar unit; or setting a circulation pipe outside the metal shell. Refractory material or ceramic powder is arranged between the pipe, the metal shell and the busbar unit.

The metal shell is mainly used for fixing and supporting. In this embodiment, the metal shell is surrounded by four metal plates, and the two free ends of each metal plate are bent vertically inward to form a covering portion.

To sum up, the utility model is equipped with a circulation pipe 30 in the dense insulating busway, and water or gas is passed through the circulation pipe 30, and the heat in the intensive busway is transferred to the circulation pipe 30 through the circulation pipe to carry the heat Intensive busway can be used to reduce the temperature, which can improve the fire resistance of the busway, improve the continuous power supply capacity of the dense insulated busway in the fire, and prolong the continuous power supply time of the densely insulated busway in the fire.

The utility model is not limited to the above-mentioned specific embodiments, and those who are familiar with the technical field can also make various changes accordingly, but any equivalent or similar changes to the utility model should be covered in the claims of the utility model within range.

Claims (7)

1. an intensive insulation bus slot, comprises busbar protecting crust and is arranged at the busbar unit in this busbar protecting crust; Described busbar unit comprises multiple busbar, and described busbar comprises the insulating barrier of busbar conductor and this busbar conductor coated, and described multiple busbar side by side parallel arranges formation entirety; It is characterized in that: be provided with circulating line in described intensive insulation bus slot, in circulating line, be connected with water or gas.

2. intensive insulation bus slot according to claim 1, is characterized in that: described circulating line is arranged between described busbar protecting crust and described busbar unit.

3. intensive insulation bus slot according to claim 1, is characterized in that: described circulating line is arranged between the adjacent busbar of described busbar unit.

4. intensive insulation bus slot according to claim 1, is characterized in that: described intensive insulation bus slot also comprises a metal-back, and it is inner that described metal-back is arranged on described busbar protecting crust, and described busbar unit is arranged in described metal-back; Described metal-back is coated with refractory matter or ceramic powder, is provided with described circulating line between described metal-back and described busbar unit.

5. intensive insulation bus slot according to claim 1, is characterized in that: described intensive insulation bus slot also comprises a metal-back, and it is inner that described metal-back is arranged on described busbar protecting crust, and described busbar unit is arranged in described metal-back; Outside described metal-back, described circulating line is set, between described metal-back and described busbar unit, is provided with refractory matter or ceramic powder.

6. intensive insulation bus slot according to claim 1, is characterized in that: described intensive insulation bus slot also comprises a metal-back, and it is inner that described metal-back is arranged on described busbar protecting crust, and described busbar unit is arranged in described metal-back; Described metal-back is outside equipped with described circulating line, is provided with described circulating line between described metal-back and described busbar unit.

7. according to intensive insulation bus slot according to claim 1, it is characterized in that: described intensive insulation bus slot also comprises at least one air-supply heat abstractor, this air-supply heat abstractor is arranged in described intensive insulation bus slot one end or described intensive insulation bus slot.