High-fire-resistance dense bus duct

Abstract

The utility model discloses a dense bus duct with high fire resistance, which comprises a bus duct body, the bus duct body is composed of a main body frame, a cover plate, a bus cavity formed by the cover plate and the main body frame, and a copper bar arranged at the end of the cover plate, a protective shell is arranged outside the main body frame, and an interlayer is arranged between the protective shell and the main body frame. A material in the interlayer is filled with a refractory material; one end, close to the copper bar, of the main body frame and one end, far away from the copper bar, of the main body frame are respectively provided with a positioning frame and a bottom plate for supporting the protective shell; the cable has high fire resistance, and has strong normal operation and safety performance in a high-temperature environment.

Description

Technical Field

[0001] The utility model relates to a high-fire-resistant dense bus duct, belonging to the technical field of bus ducts. Background Art

[0002] The intensive bus duct is a power transmission system formed by assembling the conductive bars of each phase in a "sandwich" structure and then wrapping them in a metal shell. It is the largest and most widely used bus duct product in the market. Due to its close-fitting structural characteristics between phases, it also has good thermal conductivity and dynamic stability, and is particularly suitable for large-current trunk transmission. Large-capacity loads in civil buildings, such as diesel generator rooms, refrigeration rooms, motor control centers, and floor lighting sockets, often use intensive bus duct type power distribution. Intensive bus duct has also been widely used in low-voltage distribution network projects, and plays a reliable and economical role in electrical green design and energy saving.

[0003] As a key connection tool, the fire resistance, normal operation and safety performance of dense bus duct are of paramount importance. However, the existing technology has poor fire resistance and operation capabilities in high temperature environments. Summary of the invention

[0004] In view of this, the purpose of the utility model is to provide a highly fire-resistant dense bus duct, which has high fire resistance and strong normal operation and safety performance in a high temperature environment; and can overcome the shortcomings of the prior art.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] The utility model discloses a highly fire-resistant dense bus duct, which comprises a bus duct body, wherein the bus duct body is composed of a main frame, a cover plate, a bus cavity formed by the cover plate and the main frame, and a copper bar arranged at the end of the cover plate, a protective shell is arranged outside the main frame, an interlayer is arranged between the protective shell and the main frame, and a refractory material is filled in the interlayer, and a positioning frame and a bottom plate supporting the protective shell are respectively arranged at one end of the main frame close to the copper bar and one end away from the copper bar.

[0007] As mentioned above, the protective shell includes first buckle plates located on two opposite sides of the main frame and second buckle plates located on the other two sides of the main frame, and the second buckle plates are connected to the left and right sides of the first buckle plates.

[0008] As mentioned above, the outer walls of the first gusset plate and the second gusset plate are both provided with a plastic spraying layer.

[0009] The refractory material mentioned above is refractory wool.

[0010] As mentioned above, a stopper on the wide side of the copper busbar is provided on the cover plate; the positioning frame includes a first positioning plate located on two opposite sides of the stopper and a second positioning plate located on the other two sides of the stopper, the first positioning plate and the second positioning plate are connected to each other and are limitedly engaged with the stopper, and the two ends of the second positioning plate are supported on the inner wall of the protective shell.

[0011] As mentioned above, the first positioning plate and the second positioning plate are both "U"-shaped plates, the opening of the first positioning plate faces outward and its back side is limited by the block, the bottom side of the second positioning plate and the side surface of the first positioning plate are provided with screw holes, and the first positioning plate and the second positioning plate are connected by bolts and nuts.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model can improve the fire resistance of the equipment by adding a protective shell and arranging refractory materials in the protective shell. Specifically, under external high temperature conditions, the protective shell and refractory materials are conducive to protecting the components in the main frame, improving the fire resistance and fire resistance, and facilitating stable operation under high temperature conditions. The two ends of the protective shell can be positioned by the positioning frame and the bottom plate to facilitate the installation of the protective shell.

[0014] 2. The protective shell includes a first buckle plate located on two opposite sides of the main frame and a second buckle plate located on the other two sides of the main frame. The second buckle plate is connected to the left and right sides of the first buckle plate. The first buckle plate and the second buckle plate are movably connected to facilitate installation on the main frame.

[0015] 3. The outer walls of the first gusset plate and the second gusset plate are both provided with a plastic spraying layer, which can further improve the fire resistance.

[0016] 4. A stopper is provided on the cover plate on the wide side of the copper busbar; the positioning frame includes a first positioning plate located on two opposite sides of the stopper and a second positioning plate located on the other two sides of the stopper, the first positioning plate and the second positioning plate are interconnected and limitedly engaged with the stopper, and both ends of the second positioning plate are supported on the inner wall of the protective shell. In this way, the existing stopper can be used to facilitate the installation of the positioning frame and avoid structural changes to the existing main frame. The first positioning plate and the second positioning plate are connected to each other and can be sleeved on the stopper.

[0017] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings, in which:

[0019] Figure 1 It is a schematic diagram of the connection structure of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the bus duct body in the prior art.

[0021] Figure 3 It is a front view of the bus duct body in the prior art.

[0022] Figure 4 It is a schematic diagram of the connection structure of protective shells of different specifications and positioning frames that cooperate with each other in the present invention.

[0023] Among them, the bus duct body 1; the main frame 1-1; the cover plate 1-2; the copper busbar 1-3; the protective shell 2; the first buckle plate 2-1; the second buckle plate 2-2; the refractory filling material 3; the first positioning plate 4-1; the second positioning plate 4-2; and the block 5. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, rather than for limiting the protection scope of the present invention.

[0025] like Figure 1 As shown, the utility model discloses a highly fire-resistant dense bus duct, which includes a bus duct body 1, the bus duct body 1 is composed of a main frame 1-1, a cover plate 1-2, a bus cavity formed by the cover plate 1-2 and the main frame 1-1, and a copper bar 1-3 provided at the end of the cover plate 1-2.

[0026] A protective shell 2 is provided outside the main frame 1-1, and an interlayer is provided between the protective shell 2 and the main frame 1-1, and the interlayer is filled with a refractory material 3, and the refractory material 3 is refractory cotton. A positioning frame and a bottom plate for supporting the protective shell 2 are provided at one end of the main frame 1-1 close to the copper bar 1-3 and the other end away from the copper bar 1-3, respectively. Such a structure can improve the fire resistance of the equipment by adding a protective shell 2 and arranging a refractory material 3 in the protective shell 2. Specifically, under external high temperature conditions, the protective shell 2 and the refractory material are conducive to protecting the components in the main frame 1-1, improving the fire resistance and fire resistance, and facilitating stable operation under high temperature conditions. The two ends of the protective shell 2 can be positioned by the positioning frame and the bottom plate to facilitate the installation of the protective shell 2. Specifically, the bottom plate is connected by bolts or clamped with the protective shell 2, and the bottom plate can also be connected to the main frame 1-1 by bolts and nuts.

[0027] Furthermore, the protective shell 2 includes a first gusset plate 2-1 located on two opposite sides of the main frame 1-1 and a second gusset plate 2-2 located on the other two sides of the main frame 1-1, the second gusset plate 2-2 is connected to the left and right sides of the first gusset plate 2-1, a card slot and a card block are provided at the relative positions of the first gusset plate 2-1 and the second gusset plate 2-2, and the first gusset plate 2-1 and the second gusset plate 2-2 are mutually buckled through the card slot and the card block; or screw holes are provided at the corresponding positions of the first gusset plate 2-1 and the second gusset plate 2-2, and the first gusset plate 2-1 and the second gusset plate 2-2 are mutually connected through bolts and nuts. In this way, the first gusset plate 2-1 and the second gusset plate 2-2 are movably connected, which can facilitate installation on the main frame 1-1.

[0028] At the same time, the outer walls of the first gusset plate 2-1 and the second gusset plate 2-2 are both provided with a plastic spraying layer, and the fire resistance can be further improved by the plastic spraying layer.

[0029] A stopper 5 is provided on the cover plate 1-2 on the side wide surface of the copper busbar 1-3; the positioning frame includes a first positioning plate 4-1 located on opposite sides of the stopper 5 and a second positioning plate 4-2 located on the other two sides of the stopper 5, the first positioning plate 4-1 and the second positioning plate 4-2 are interconnected and clamped with the stopper 5, and the two ends of the second positioning plate 4-2 are supported on the inner wall of the protective shell 2, so that the existing stopper 5 can be used to facilitate the installation of the positioning frame, avoiding structural changes to the existing main frame 1-1, and the first positioning plate 4-1 and the second positioning plate 4-2 are connected to each other, and can be sleeved on the stopper 5. Specifically, the first positioning plate 4-1 and the second positioning plate 4-2 are both "U"-shaped plates, the opening of the first positioning plate 4-1 is outward and its back side is mutually limited with the stopper 5, the bottom side of the second positioning plate 4-2 and the side of the first positioning plate 4-1 are provided with screw holes, and the first positioning plate 4-1 and the second positioning plate 4-2 are connected by bolts and nuts.

[0030] At the same time, the positioning frame and the protective shell 2 have different sizes to use bus ducts of different sizes, such as Figure 4 As shown, the first positioning plate 4-1 and the second positioning plate 4-2 of the positioning frame are used in conjunction with each other to be suitable for bus ducts of different specifications.

[0031] The above is only a preferred embodiment of the utility model, and does not limit the confidentiality of the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still falls within the scope of the technical solution of the utility model.

Claims

1. A highly fire-resistant dense bus duct, comprising a bus duct body (1), wherein the bus duct body (1) is composed of a main frame (1-1), a cover plate (1-2), a bus cavity formed by the cover plate (1-2) and the main frame (1-1), and a copper busbar (1-3) provided at the end of the cover plate (1-2), characterized in that: A protective shell (2) is provided outside the main frame (1-1), an interlayer is provided between the protective shell (2) and the main frame (1-1), the interlayer is filled with a refractory material (3), and a positioning frame and a bottom plate for supporting the protective shell (2) are respectively provided at one end of the main frame (1-1) close to the copper bar (1-3) and at another end of the main frame (1-1) far from the copper bar (1-3).

2. The highly fire-resistant dense bus duct according to claim 1, characterized in that: The protective shell (2) comprises first buckle plates (2-1) located on two opposite sides of the main frame (1-1) and second buckle plates (2-2) located on the other two sides of the main frame (1-1), wherein the second buckle plates (2-2) are connected to the left and right sides of the first buckle plates (2-1).

3. The highly fire-resistant dense bus duct according to claim 2, characterized in that: The outer walls of the first gusset plate (2-1) and the second gusset plate (2-2) are both provided with a plastic spraying layer.

4. The highly fire-resistant dense bus duct according to claim 1, characterized in that: The refractory material (3) is refractory wool.

5. The highly fire-resistant dense bus duct according to claim 1, characterized in that: A stopper (5) on the side width surface of the copper bar (1-3) is provided on the cover plate (1-2); The positioning frame comprises a first positioning plate (4-1) located on two opposite sides of the stopper (5) and a second positioning plate (4-2) located on the other two sides of the stopper (5); the first positioning plate (4-1) and the second positioning plate (4-2) are connected to each other and are position-limitingly engaged with the stopper (5); and two ends of the second positioning plate (4-2) are supported on the inner wall of the protective shell (2).

6. The highly fire-resistant dense bus duct according to claim 5, characterized in that: The first positioning plate (4-1) and the second positioning plate (4-2) are both "U"-shaped plates, the opening of the first positioning plate (4-1) faces outwards and the back side thereof is mutually limited with the stopper (5), the bottom side of the second positioning plate (4-2) and the side surface of the first positioning plate (4-1) are both provided with screw holes, and the first positioning plate (4-1) and the second positioning plate (4-2) are connected by bolts and nuts.

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