Fireproof bus duct with aluminum alloy shell

Abstract

The invention provides a fireproof bus duct with an aluminum alloy shell, and relates to the technical field of power transmission equipment, the fireproof bus duct comprises a duct body and a cover plate, the cover plate is detachably connected with the top of the duct body, a bus bar and a fixing assembly are arranged in the duct body, the bus bar is fixedly arranged in the duct body through the fixing assembly, a connector is arranged at the end of the bus bar, and the connector is connected with the end of the duct body. A fireproof heat insulation layer is arranged between the groove body and the fixing assembly, a cavity is formed in the bottom of the cover plate, and the fireproof heat insulation layer can effectively prevent fire spreading and protect the bus bar from being affected by high temperature when a fire occurs, so that the fireproof safety of the bus duct is greatly improved, and the damage degree of the fire risk to an electrical system is reduced; when the external environment temperature is relatively high, the cavities can reduce the heat transfer into the bus duct, reduce the temperature rise of the bus bar, and improve the operation stability and reliability of the bus duct.

Description

Technical Field

[0001] The present application relates to the technical field of power transmission equipment, and in particular to a fireproof bus duct with an aluminum alloy shell. Background Art

[0002] With the vigorous development of the electric power industry, bus duct, as an extremely efficient power transmission equipment, has been widely used in various buildings and industrial sites. With its unique advantages, it provides stable and reliable power support for modern production and life.

[0003] However, the existing bus duct has certain deficiencies in fire resistance. Once a fire occurs in the bus duct use environment, the busbar connected to it will be burned by the fire, causing the fire to spread, posing a serious threat to people's life and property safety. After the fire is extinguished in the later stage, the lines need to be rearranged and a new set of bus ducts need to be replaced. This is not only costly, but the process of arranging the lines is also extremely time-consuming and labor-intensive, which undoubtedly brings huge economic pressure and work burden to related enterprises and units. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide an aluminum alloy shell fireproof bus duct, which can solve the technical problem of insufficient fireproof performance of existing bus ducts.

[0005] An embodiment of the present application provides an aluminum alloy shell fireproof bus duct, comprising a trough body and a cover plate, wherein the cover plate is detachably connected to the top of the trough body, a busbar and a fixing assembly are provided in the trough body, the busbar is fixed in the trough body through the fixing assembly, a connector is provided at the end of the busbar, the connector is connected to the end of the trough body, a fireproof and heat-insulating layer is provided between the trough body and the fixing assembly, and a cavity is provided at the bottom of the cover plate.

[0006] Furthermore, a plurality of connecting columns are fixedly provided on the top of the trough body, and mounting holes adapted to the connecting columns are provided on the cover plate, and the upper ends of the connecting columns pass through the mounting holes and are threadedly connected with locking nuts.

[0007] Furthermore, the fixing assembly includes a several-type support base frame and two side plates, the several-type support base frame is connected to the inner bottom of the trough body, the two side plates are respectively arranged on the left and right sides of the several-type support base frame, the two side plates are symmetrically fixed on the several-type support base frame, the upper ends of the two side plates are abutted against the bottom of the cover plate, the several-type support frame, the cover plate and the two side plates form a accommodating cavity, and the busbar is located in the accommodating cavity.

[0008] Furthermore, limiting grooves are provided at the two inner lower ends of the trough body, the bottom of the several-type supporting base frame is adapted to the limiting grooves, and the several-type supporting base frame is slidably connected to the limiting grooves.

[0009] Furthermore, a fireproof baffle is provided inside the accommodating cavity.

[0010] Furthermore, the cover plate is provided with a plurality of heat dissipation holes connected with the cavity.

[0011] Furthermore, a heat dissipation fin plate is fixedly provided on the cover plate, one end of the heat dissipation fin plate is located in the cavity, and the other end of the heat dissipation fin plate is located in the accommodating cavity.

[0012] Furthermore, the busbar is composed of a plurality of conductors, and an insulating fireproof layer is provided on the surface of the conductors.

[0013] Furthermore, connecting plates are provided around the connecting head, and the connecting plates are used to connect two aluminum alloy shell fireproof bus ducts.

[0014] Furthermore, the outer sides of the trough body, the cover plate and the connecting plate are all provided with a fireproof coating.

[0015] Beneficial effects of the present invention:

[0016] The present invention provides a fireproof and heat-insulating layer between the trough body and the fixed component, which can effectively prevent the spread of fire in the event of a fire and protect the busbar from high temperature. This greatly improves the fire safety of the bus duct, reduces the degree of damage to the electrical system caused by the risk of fire, and can buy precious time for personnel evacuation and fire extinguishing, reducing the losses caused by the fire. A cavity is provided at the bottom of the cover plate. When the external ambient temperature is high, the cavity can reduce the heat transfer to the inside of the bus duct, reduce the temperature rise of the busbar, and improve the operating stability and reliability of the bus duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of some embodiments of the present application;

[0019] Figure 2 It is a cross-sectional view of some embodiments of the present application;

[0020] The reference numerals are:

[0021] 1. Trough body; 101. Connecting column; 2. Cover plate; 21. Mounting hole; 22. Heat dissipation hole; 3. Busbar; 31. Conductor; 4. Fixing assembly; 41. Several types of supporting base frame; 42. Side plate; 5. Connector; 6. Fireproof and heat-insulating layer; 7. Cavity; 8. Locking nut; 9. Accommodating cavity; 10. Limiting groove; 11. Fireproof baffle; 12. Heat dissipation fin plate; 13. Insulating and fireproof layer; 14. Connecting plate. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] Specific embodiment: Figure 1 and Figure 2 As shown, the present application provides an aluminum alloy shell fireproof bus duct, including a trough body 1 and a cover plate 2, the cover plate 2 is detachably connected to the top of the trough body 1, when the internal bus bar 3 needs to be inspected, replaced or maintained, the cover plate 2 can be easily removed, which improves the convenience of operation, and the trough body 1 is provided with a bus bar 3 and a fixing component 4, the bus bar 3 is fixed in the trough body 1 by the fixing component 4, ensuring that the bus bar 3 remains stable during operation and will not be displaced due to vibration or external force, thereby ensuring the reliability of electrical connection, and the end of the bus bar 3 is provided with a connector 5, the connection The head 5 is connected to the end of the trough body 1, and a fireproof and heat-insulating layer 6 is provided between the trough body 1 and the fixing assembly 4, which can effectively prevent the spread of fire in the event of a fire, protect the busbar 3 from high temperature, improve the fire safety of the bus duct, reduce the degree of damage to the electrical system caused by the fire risk, and buy precious time for personnel evacuation and fire extinguishing, thereby reducing the losses caused by the fire. A cavity 7 is provided at the bottom of the cover plate 2. When the external ambient temperature is high, the cavity 7 can reduce the heat transfer to the inside of the bus duct, reduce the temperature rise of the busbar 3, and improve the operation stability and reliability of the bus duct.

[0030] like Figure 1 and Figure 2 As shown, a plurality of connecting columns 101 are fixedly provided on the top of the trough body 1, and a mounting hole 21 matched with the connecting column 101 is provided on the cover plate 2. The upper end of the connecting column 101 passes through the mounting hole 21 and is threadedly connected with a locking nut 8. Specifically, a thread is provided on the upper end of the connecting column 101, and the connecting column 101 is connected to the locking nut 8 through a thread. The installer can easily align the cover plate 2 with the trough body 1 from above for installation without complicated alignment operations, thereby improving the installation efficiency. During installation, it is only necessary to align the mounting hole 21 with the connecting column 101 and lower it to quickly complete the initial positioning, thereby reducing the uncertainty during the installation process. Then, the locking nut 8 is tightened on the connecting column 101, which can tightly fix the cover plate 2 to prevent the cover plate 2 from accidentally loosening or falling off during use, thereby ensuring the overall structural stability of the bus duct.

[0031] like Figure 2As shown, the fixing assembly 4 includes a several-type support base frame 41 and two side plates 42. The several-type support base frame 41 is connected to the inner bottom of the trough body 1, and the two side plates 42 are respectively arranged on the left and right sides of the several-type support base frame 41. The two side plates 42 are symmetrically fixed on the several-type support base frame 41. The upper ends of the two side plates 42 abut against the bottom of the cover plate 2. The several-type support frame, the cover plate 2 and the two side plates 42 surround an accommodating cavity 9, and the busbar 3 is located in the accommodating cavity 9. Among them, the several-type support base frame 41 is connected to the inner bottom of the trough body 1, providing a stable bottom support for the busbar 3. The several-type structure has good strength and stability, can withstand the weight of the busbar 3, and prevent the busbar 3 from being displaced due to vibration or external force during operation. The two side plates 42 are respectively arranged on the left and right sides of the several-type support base frame 41, and It is symmetrically fixed on the several-type support base frame 41, and together with the several-type support base frame 41 forms a stable frame structure. The busbar 3 is limited and fixed from both sides, which can effectively prevent the busbar 3 from shaking in the horizontal direction and ensure the stable position of the busbar 3. The structural design of the fixing component 4 is simple and reasonable, which is convenient for installation and disassembly. When installing the busbar 3, the several-type support base frame 41 can be fixed to the bottom of the trough body 1 first, and then the busbar 3 is placed on the several-type support base frame 41, and then the side panels 42 on both sides are installed, and finally the cover plate 2 is covered to complete the installation. This installation method is simple and fast, and improves the installation efficiency. When the busbar 3 needs to be maintained or repaired, the cover plate 2 can be easily opened, and the busbar 3 can be taken out for inspection and repair, which reduces the maintenance cost and time.

[0032] like Figure 2 As shown, limiting grooves 10 are provided at the two inner lower ends of the trough body 1, and the bottom of the several-type supporting base frame 41 is matched with the limiting grooves 10, and the several-type supporting base frame 41 is slidably connected with the limiting grooves 10. The setting of the limiting grooves 10 provides a clear installation position and guide for the several-type supporting base frame 41. When installing the several-type supporting base frame 41, it is only necessary to align its bottom with the limiting grooves 10 and slide it in, without the need for complicated positioning operations, which greatly improves the installation efficiency. The sliding connection method makes the installation process smoother, and the limiting grooves 10 are matched with the bottom of the several-type supporting base frame 41, which can effectively limit the several-type supporting base frame 41. During the operation of the bus duct, the several-type supporting base frame 41 will not shake left and right, thereby ensuring the fixed stability of the busbar 3.

[0033] like Figure 2 As shown, a fireproof baffle 11 is provided in the accommodating cavity 9. In the present embodiment, the fireproof baffle 11 is made of mica sheets, which can effectively prevent the spread of fire in case of fire. When the busbar 3 in a certain area catches fire, the fireproof baffle 11 can prevent the flame and high temperature from spreading to other areas, thereby buying time for fire extinguishing and personnel evacuation.

[0034] like Figure 1 and Figure 2As shown, the cover plate 2 is provided with a plurality of heat dissipation holes 22 connected with the cavity 7. The busbar 3 generates a certain amount of heat during operation. The setting of the heat dissipation holes 22 can enable the heat in the accommodating cavity 9 to exchange heat with the outside through the cavity 7, thereby effectively reducing the temperature of the busbar 3. Maintaining a low operating temperature is conducive to improving the electrical conductivity and service life of the busbar 3, and reducing the risk of failure caused by overheating.

[0035] like Figure 2 As shown, a heat dissipation fin 12 is fixedly provided on the cover plate 2, one end of the heat dissipation fin 12 is located in the cavity 7, and the other end of the heat dissipation fin 12 is located in the accommodating cavity 9. The setting of the heat dissipation fin 12 can effectively conduct the heat generated by the busbar 3 in the accommodating cavity 9 to the cavity 7, and then dissipate it through the heat dissipation holes 22 on the cover plate 2. This design greatly increases the heat dissipation area, improves the heat dissipation efficiency, and helps to maintain the normal working temperature of the busbar 3. In this embodiment, the heat dissipation fin 12 is made of copper, which can quickly dissipate the heat.

[0036] like Figure 2 As shown, the busbar 3 is composed of multiple conductors 31, and the surface of the conductor 31 is provided with an insulating fireproof layer 13. The insulating fireproof layer 13 can effectively avoid mutual interference between different conductors 31, ensure the stable transmission of current in each conductor 31, and improve the reliability of the electrical system. The insulating fireproof layer 13 has certain flexibility and wear resistance, which can reduce the damage to the conductor 31 during the installation process. In this embodiment, the insulating fireproof layer 13 is made of ceramic silicone rubber. Under the action of high-temperature flames, the insulating fireproof layer 13 made of ceramic silicone rubber will be rapidly converted into a hard ceramic-like substance to form a layer of heat-insulating protective layer to prevent the fire from spreading to the conductor 31. The ceramicization process can effectively protect the busbar 3 and improve its fire resistance. At the same time, the insulating fireproof layer 13 made of ceramic silicone rubber has good flexibility and elasticity at room temperature, can adapt to the shape changes and vibrations of the busbar 3, and can effectively buffer external mechanical shocks during the installation process.

[0037] like Figure 1As shown, connecting plates 14 are provided around the connecting head 5, and the connecting plates 14 are used to connect the connecting heads 5 of two aluminum alloy shell fireproof bus ducts. The setting of the connecting plate 14 provides a special connecting part for the connection of the two aluminum alloy shell fireproof bus ducts. In practical applications, when it is necessary to extend the length of the bus duct or expand the system, multiple bus ducts can be quickly and conveniently connected together through the connecting plate 14 without complicated operations, thereby improving the installation efficiency. The design of the connecting plate 14 can ensure that the connection between the two connecting heads 5 is firm and reliable. In this embodiment, threaded holes are provided on the connecting plate 14, and the connecting plates 14 of the two aluminum alloy shell fireproof bus ducts can be connected by bolts. The setting of the connecting plate can enhance the fireproof performance of the entire system to a certain extent. When a fire occurs, the connecting plate 14 can prevent the spread of fire, reduce the impact of the fire on adjacent bus ducts, and improve the fire safety of the system.

[0038] like Figure 1 and Figure 2 As shown, the outer sides of the trough body 1, the cover plate 2 and the connecting plate 14 are provided with a fireproof coating, which can play a role of heat insulation and flame retardancy in the event of a fire. The fireproof coating treatment of the key parts such as the trough body 1, the cover plate 2 and the connecting plate 14 can greatly improve the overall fireproof ability of the bus duct, and gain precious time for personnel evacuation and fire extinguishing. In this embodiment, the trough body 1, the cover plate 2 and the connecting plate 14 are all made of aluminum alloy, and the fireproof coating is an intumescent fireproof coating. When encountering fire, the coating will rapidly expand and foam to form a dense heat-insulating carbonized layer, thereby preventing heat from being transferred to the trough body 1, the cover plate 2 and the connecting plate 14, thereby playing a role of fire protection.

[0039] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fireproof bus duct with an aluminum alloy shell, characterized by: It includes a trough body and a cover plate, the cover plate is detachably connected to the top of the trough body, a busbar and a fixing assembly are arranged in the trough body, the busbar is fixed in the trough body through the fixing assembly, a connector is arranged at the end of the busbar, the connector is connected to the end of the trough body, a fireproof and heat-insulating layer is arranged between the trough body and the fixing assembly, and a cavity is arranged at the bottom of the cover plate.

2. The aluminum alloy shell fireproof bus duct according to claim 1, characterized in that: A plurality of connecting columns are fixedly arranged on the top of the trough body, and mounting holes matched with the connecting columns are arranged on the cover plate. The upper ends of the connecting columns pass through the mounting holes and are threadedly connected with locking nuts.

3. The aluminum alloy shell fireproof bus duct according to claim 1, characterized in that: The fixing assembly includes a several-type support base frame and two side plates, the several-type support base frame is connected to the inner bottom of the trough body, the two side plates are respectively arranged on the left and right sides of the several-type support base frame, the two side plates are symmetrically fixed on the several-type support base frame, the upper ends of the two side plates are abutted against the bottom of the cover plate, the several-type support frame, the cover plate and the two side plates form an accommodating cavity, and the busbar is located in the accommodating cavity.

4. The aluminum alloy shell fireproof bus duct according to claim 3, characterized in that: The two inner lower ends of the groove body are provided with limiting grooves, the bottom of the several-type supporting base frame is matched with the limiting grooves, and the several-type supporting base frame is slidably connected with the limiting grooves.

5. The aluminum alloy shell fireproof bus duct according to claim 3, characterized in that: Fireproof baffles are arranged in the accommodating cavity.

6. The aluminum alloy shell fireproof bus duct according to claim 3, characterized in that: The cover plate is provided with a plurality of heat dissipation holes communicated with the cavity.

7. The aluminum alloy shell fireproof bus duct according to claim 6, characterized in that: A heat dissipation fin is fixedly disposed on the cover plate, one end of the heat dissipation fin is located in the cavity, and the other end of the heat dissipation fin is located in the accommodating cavity.

8. The aluminum alloy shell fireproof bus duct according to claim 1, characterized in that: The busbar is composed of a plurality of conductors, and an insulating fireproof layer is provided on the surface of the conductors.

9. The aluminum alloy shell fireproof bus duct according to claim 1, characterized in that: Connecting plates are arranged around the connector, and the connecting plates are used to connect two aluminum alloy shell fireproof bus ducts.

10. The aluminum alloy shell fireproof bus duct according to claim 9, characterized in that: The outer sides of the trough body, the cover plate and the connecting plate are all provided with a fireproof coating.

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