CN103401194B - Intensive insulation bus slot - Google Patents

Abstract

The present invention discloses a kind of intensive insulation bus slot, comprises busbar protecting crust and some busbars. Busbar comprises fire resistant belt, the heat-shrinkable T bush of busbar conductor and coated busbar conductor. The outer entirety of these busbars that are arranged side by side is placed in built-in metal shell, between these busbars and built-in metal shell, is provided with the first filling slot. Built-in metal shell is arranged in busbar protecting crust, between built-in metal shell and busbar protecting crust, is provided with the second filling slot. The first filling slot, the second filling slot are filled with respectively insulated fireproof insulating materials. The present invention realizes flame-retardant by fire resistant belt, realize insulated enclosure by heat-shrinkable T bush, further improve its flame-retardant by insulating refractories, built-in metal shell can play fixed support effect to the insulating refractories in the first filling slot and the second filling slot, prevent from being difficult for fixation problem because of what insulating refractories caused too much, thereby can fill more refractory material, improve flame-retardant effect.

Description

Intensive Insulated Busway

technical field

The invention relates 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 fire resistance performance, but the existing bus insulation layer is still difficult to meet the fire resistance performance requirements.

Contents of the invention

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

To achieve the above object, the present invention provides a dense insulated busway, which includes a busbar protective shell and several busbars arranged in the busbar protective shell. The busbar includes a busbar conductor, a fire-resistant tape and a heat-shrinkable sleeve covering the busbar conductor. The busbars are arranged side by side in parallel and next to each other. These side-by-side busbars are entirely sheathed in a built-in metal shell. A first filling groove is arranged between the busbars and the built-in metal shell. The built-in metal shell is set in the protective shell of the busbar. A second filling groove is arranged between the built-in metal shell and the protective shell of the busbar. The first filling groove and the second filling groove are respectively filled with insulating refractory insulating material.

Preferably, the fire-resistant belt is a ceramic silicone rubber composite belt or a fire-resistant mica belt. The fire-resistant belt of the busbar is made of ceramic silicone rubber composite belt, which can play a flame-retardant and fire-resistant role. The busbar conductors are extended to protect the busbar conductors located in the ceramic silicone rubber composite belt from damage, ensure the normal use function of the busbars, and improve the safety of the product.

Preferably, the insulating refractory material is refractory wool or ceramic silicon rubber.

Preferably, the built-in metal shell is surrounded by four built-in metal plates, and the two free ends of each built-in metal plate are vertically bent inward to form a built-in cladding part.

Preferably, the busbar shield is surrounded by four metal plates, and two adjacent metal plates are fixed together by bolts.

As mentioned above, the dense insulated busway of the present invention realizes the flame-retardant and fire-resistant effect through the fire-resistant tape, realizes the insulation and sealing effect through the heat-shrinkable sleeve, and further improves its fire-resistant effect through the insulating refractory material, and the side-by-side busbar and the busbar protective shell There is a built-in metal shell between them. The built-in metal shell can not only fix and support the insulating refractory material in the first filling tank, but also play a fixed supporting role on the insulating refractory material in the second filling tank, preventing the busbars from being arranged side by side. It is difficult to fix the problem caused by too much filling of insulating and refractory materials between the bar and the protective shell of the busbar. More insulating and refractory materials can be filled to improve the flame-retardant and refractory effect and prolong the service life of the busway.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of a dense insulated busway of the present invention.

In the figure: busbar protective shell 10, metal plate 11, bolt 12, busbar 20, busbar conductor 21, refractory belt 22, heat shrinkable sleeve 23, built-in metal shell 30, built-in metal plate 31, built-in cladding part 32 , the first filling tank 40 , the first filling tank 50 .

detailed description

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

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 several busbars 20 arranged in the busbar protective shell 10 .

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 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 20 includes a busbar conductor 21 , a refractory tape 22 covering the busbar conductor 21 , and a heat shrinkable sleeve 23 . The refractory belt 22 is preferably a ceramic silicon rubber composite belt, and of course it can also be a refractory mica belt. The fire-resistant belt 22 is made of ceramic silicone rubber composite belt, which can play a flame-retardant and fire-resistant role. 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.

The busbars 20 are arranged side by side in parallel and closely adjacent to each other, and the outside of the busbars 20 arranged side by side is entirely covered in a built-in metal shell 30 . The built-in metal shell 30 mainly plays the role of fixing support. In this embodiment, the built-in metal shell 30 is surrounded by four built-in metal plates 31, and the two free ends of each built-in metal plate 31 are bent vertically inward to form a built-in covering Section 32.

A first filling groove 40 is provided between the busbars 20 and the built-in metal shell 30, and the first filling groove 40 is filled with an insulating refractory material. The insulating refractory material can be ceramic silicone rubber material or refractory cotton.

The built-in metal shell 30 is set in the busbar protective shell 10, and the second filling groove 50 is also arranged between the built-in metal shell 30 and the busbar protective shell 10, and the second filling groove 50 is filled with insulating fire-resistant insulating material, and the insulation is fire-resistant and insulated. The material can be vitrified silicone rubber material or fire-resistant cotton.

The same insulating refractory material can be filled in the first filling groove 40 and the second filling groove 50, such as ceramic silicon rubber material or refractory cotton; the filling materials in the first filling groove 40 and the second filling groove 50 can also be different, For example, the first filling groove 40 is filled with refractory cotton, and the second filling groove 50 is filled with ceramic silicone rubber material, or the first filling groove 40 is filled with ceramic silicon rubber material, and the second filling groove 50 is filled with fireproof cotton.

To sum up, the dense insulated busway of the present invention realizes the flame-retardant and fire-resistant effect through the fire-resistant belt 22, realizes the insulation and sealing effect through the heat-shrinkable sleeve 23, and further improves its fire-resistant effect through the insulating and refractory material, and the side-by-side busbar and busbar A built-in metal shell 30 is arranged between the row protective shells. The built-in metal shell 30 can not only fix and support the insulating refractory material between the side-by-side busbars 20 and the built-in metal shell 30, but also provide support for the built-in metal shell 30 and the busbar. The insulating refractory material between the busbar protective shells 10 acts as a fixed support, thereby preventing the problem of difficult fixation caused by filling too much insulating refractory material between the parallel busbars 20 and the busbar protective shells 10, and can fill more insulating Refractory materials can improve the flame retardant effect and prolong the service life of the busway. Furthermore, the built-in metal shell 30 separates the parallel busbars 20 and the busbar protective shell 10 into two filling slots (the first filling slot 40 and the second filling slot 50), and the two filling slots can be filled with different insulating and fire-resistant materials to enhance the fire resistance effect.

The present invention is not limited to the specific embodiments described above, and those skilled in the art can also make various changes accordingly, but any changes that are equivalent or similar to the present invention should be covered within the scope of the claims of the present invention.

Claims (7)

1. an intensive insulation bus slot, comprise busbar protecting crust and be arranged at the some busbars in this busbar protecting crust, it is characterized in that: described busbar comprises the fire resistant belt of busbar conductor and coated this busbar conductor, heat-shrinkable T bush, these busbars side by side parallel next-door neighbour arrange, the busbar entirety that these are arranged side by side is placed in a built-in metal shell, between these busbars and this built-in metal shell, be provided with the first filling slot, this built-in metal shell is arranged in described busbar protecting crust, between this built-in metal shell and described busbar protecting crust, be provided with the second filling slot, the first filling slot, the second filling slot is filled with respectively insulated fireproof insulating materials, described built-in metal shell plays separation and fixed support effect to being positioned at the insulating refractories of described the first filling slot and described the second filling slot.

2. intensive insulation bus slot according to claim 1, is characterized in that: described fire resistant belt is ceramic silicon rubber composite band.

3. intensive insulation bus slot according to claim 1, is characterized in that: described fire resistant belt is fire-resistant isinglass belt.

4. intensive insulation bus slot according to claim 1, is characterized in that: described insulating refractories is fire-resistant cotton.

5. intensive insulation bus slot according to claim 1, is characterized in that: described insulating refractories is ceramic silicon rubber.

6. according to the intensive insulation bus slot described in claim 1 to 5 any one, it is characterized in that: described built-in metal shell is surrounded by four blocks of built-in metal plates, two free ends of each built-in metal plate are all inwardly vertically bent to form built-in coated portion.

7. according to the intensive insulation bus slot described in claim 1 to 5 any one, it is characterized in that: described busbar protecting crust is surrounded by four metallic plates, and two adjacent metal sheets are bolted on together.