Fireproof intensive bus duct and wire duct connection structure applied to bus duct

Abstract

The utility model relates to the technical field of bus ducts, in particular to a fireproof intensive bus duct and a wire duct connecting structure applied to the bus duct, and the fireproof intensive bus duct comprises a wire duct cover plate, a wire duct side plate and a plurality of copper bars, the wire duct side plate and the wire duct cover plate define a mounting cavity, the plurality of copper bars are stacked side by side to form a copper bar group, each copper bar is provided with a mounting part, and the mounting part is arranged in the mounting cavity. The installation parts of the copper bars are connected in the installation cavities, and gaps between the copper bar groups and the inner walls of the installation cavities and gaps between the installation parts of the two adjacent copper bars are filled with plastic insulation fireproof white mud layers. According to the scheme, the structural design of insulation of the plastic insulating fire-resistant white mud layer is adopted, and the effects of optimizing the overall structure of the bus duct, saving the material cost, reducing the labor intensity, enhancing the fire resistance, simplifying the process and reducing the product manufacturing cost are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bus ducts, and particularly relates to a fire-resistant and compact bus duct and a wire duct connection structure applied to the bus duct. Background Art

[0002] As an emergency power supply trunk line, the traditional fire-resistant bus duct undertakes the function of ensuring power supply in an emergency special state. At present, the mainstream products use special metal parts sprayed with fireproof paint, then wrapped with conductor mica tape and ceramifiable fire-resistant composite tape, and finally filled and extruded with aluminum silicate fiber thermal insulation blankets. The production process is complex, the market price is high, and the manual filling of the aluminum silicate fiber thermal insulation blanket is likely to cause skin allergies to employees, increasing labor protection expenses and low production efficiency, and it does not have the characteristics of universality and economy. Therefore, the utility model proposes a new solution to the above technical problems. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a fire-resistant and compact bus duct, which adopts the structural design of a plastic insulating fire-resistant white clay layer for insulation, achieving the effects of optimizing the overall structure of the bus duct, saving material costs, reducing labor intensity, simplifying the process and reducing the manufacturing cost of the product.

[0004] Based on this, the utility model provides a fire-resistant and compact bus duct, including:

[0005] A wire duct cover plate;

[0006] A wire duct side plate, and the wire duct side plate and the wire duct cover plate enclose an installation cavity.

[0007] A plurality of copper bars, and the plurality of copper bars are stacked side by side to form a copper bar group. Each copper bar is provided with an installation part, and the installation part of the copper bar is connected in the installation cavity. The gaps between the copper bar group and the inner wall of the installation cavity and between the installation parts of adjacent two copper bars are filled with a plastic insulating fire-resistant white clay layer.

[0008] For the fire-resistant and compact bus duct as described above, a polyester insulating film is further wound outside the installation part of the copper bar, and the plastic insulating fire-resistant white clay layer is wrapped outside the polyester insulating film to double-insulate the copper bar.

[0009] For the fire-resistant and compact bus duct as described above, the wire duct cover plate is provided with a first wire duct cover plate and a second wire duct cover plate, and the wire duct side plate is provided with a first wire duct side plate and a second wire duct side plate. The first wire duct cover plate, the second wire duct cover plate, the first wire duct side plate and the second wire duct side plate jointly enclose an installation cavity for installing the copper bar.

[0010] A fire-resistant and dense busbar trunking as described above, wherein heat-conducting protrusions for improving the heat dissipation efficiency are provided on the outer walls of the first trunking side plate and the second trunking side plate.

[0011] A fire-resistant and dense busbar trunking as described above, wherein heat dissipation grooves for heat dissipation are provided on the first trunking cover plate and the second trunking cover plate.

[0012] A fire-resistant and dense busbar trunking as described above, wherein the first trunking cover plate and the second trunking cover plate, and the first trunking side plate and the second trunking side plate are made of aluminum-magnesium alloy profiles.

[0013] The present utility model also provides a trunking connection structure applied to a busbar trunking, which is applicable to a fire-resistant and dense busbar trunking as described above. The connecting ends of the copper bars of the fire-resistant and dense busbar trunking are oppositely connected to both sides of the trunking connection structure for electrical connection.

[0014] A trunking connection structure applied to a busbar trunking as described above, comprising:

[0015] A connection cover plate, which is provided with a first connection cover plate and a second connection cover plate. The first connection cover plate and the second connection cover plate are respectively connected to the first trunking cover plate and the second trunking cover plate;

[0016] A connection side plate, which is provided with a same-side connection side plate and an opposite-side connection side plate. The same-side connection side plate and the opposite-side connection side plate are respectively fixedly connected to connection fixing holes formed by enclosing the trunking cover plate and the trunking side plate. And the same-side connection side plate and the opposite-side connection side plate, together with the first connection cover plate and the second connection cover plate, enclose a connection cavity. A fire-resistant ceramic connector is provided in the connection cavity, and two fire-resistant and dense busbar trunkings are electrically connected through the fire-resistant ceramic connector;

[0017] A connection pressure plate, which is provided with a first connection pressure plate and a second connection pressure plate. The first connection pressure plate and the second connection pressure plate are respectively arranged on both sides of the same-side connection side plate and the opposite-side connection side plate. The first connection pressure plate and the second connection pressure plate are connected by a connecting member to fasten the same-side connection side plate, the opposite-side connection side plate and the fire-resistant ceramic connector.

[0018] A trunking connection structure applied to a busbar trunking as described above, wherein side plate sealing portions for sealing the same-side connection side plate and the opposite-side connection side plate are provided on the first connection pressure plate and the second connection pressure plate.

[0019] A wire groove connection structure applied to a busbar trunking as described above. The same-side connection side plates are provided with a first same-side connection side plate and a second same-side connection side plate. The opposite-side connection side plates are provided with a first opposite-side connection side plate and a second opposite-side connection side plate. The side plate sealing part can seal the sealed connection port formed after the first same-side connection side plate, the second same-side connection side plate, the first opposite-side connection side plate and the second opposite-side connection side plate are connected. The first same-side connection side plate is opposite to the first opposite-side connection side plate, and the second same-side connection side plate is opposite to the second opposite-side connection side plate. The first same-side connection side plate and the first opposite-side connection side plate, and the second same-side connection side plate and the second opposite-side connection side plate are respectively provided with a white clay filling part and a connector installation part. The white clay filling part is for filling the plastic insulating refractory white clay layer, and the connector installation part is for electrically connecting the refractory ceramic connector and the copper bar.

[0020] Implementing the embodiments of the present utility model has the following beneficial effects:

[0021] 1. This solution adopts a structural design with a plastic insulating refractory white clay layer for insulation. By using a plastic insulating refractory white clay layer to replace the conductor mica tape and the ceramifiable refractory composite tape to wrap the insulation part of the copper bar, and using aluminosilicate fiber thermal insulation blankets to fill the gaps on the inner wall of the installation cavity and the gaps between adjacent two copper bar installation parts to form an isolation layer for insulation. The fire-resistant busbar trunking has good fire-resistant characteristics, the compact busbar trunking has a mature manufacturing process, the upstream and downstream supply chains are complete and sufficient, and the cost is low, with excellent universality and economy. This solution combines the advantages of the fire-resistant busbar trunking and the compact busbar trunking, achieving the effects of optimizing the overall structure of the busbar trunking, saving material costs, reducing labor intensity, enhancing fire resistance, simplifying the process and reducing the product manufacturing cost. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of the fire-resistant and compact busbar trunking of the present utility model;

[0024] Figure 2 Corresponding to Figure 1 exploded view of the structure;

[0025] Figure 3 Corresponding to Figure 2 enlarged view of part A;

[0026] Figure 4For corresponding Figure 1 C-C sectional view with some structures hidden in Figure 1

[0027] Figure 5 For corresponding Figure 4 Exploded view of the structure in Figure 4

[0028] Figure 6 Schematic structural view of a fire-resistant and dense busbar connected to a wiring duct connection structure

[0029] Figure 7 For corresponding Figure 6 Enlarged view of part B in Figure 6

[0030] Figure 8 For corresponding Figure 6 Schematic structural view in another direction

[0031] In the figure: 11 - first wiring duct cover plate, 12 - second wiring duct cover plate, 13 - heat dissipation groove; 21 - first wiring duct side plate, 22 - second wiring duct side plate, 23 - heat conduction protrusion, 231 - wavy small protrusion, 24 - arc-shaped protrusion; 3 - copper busbar; 5 - plastic insulation refractory white clay layer; 61 - first connection cover plate, 62 - second connection cover plate; 7 - connection side plate, 71 - same-side connection side plate, 711 - first same-side connection side plate, 712 - second same-side connection side plate, 72 - opposite-side connection side plate, 721 - first opposite-side connection side plate, 722 - second opposite-side connection side plate; 81 - first connection pressing plate, 82 - second connection pressing plate, 83 - side plate sealing part, 84 - elastic connection part, 85 - connecting piece, 9 - connection cavity, 91 - refractory ceramic connector Detailed implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0033] As Figures 1 to 5 shown, a fire-resistant and dense busbar provided by an embodiment of the present invention includes:

[0034] A wiring duct cover plate; a wiring duct side plate, and the wiring duct side plate and the wiring duct cover plate enclose an installation cavity; a plurality of copper busbars 3, and the plurality of copper busbars 3 are stacked side by side to form a copper busbar group. Each copper busbar 3 is provided with an installation part, and the installation part of the copper busbar 3 is connected in the installation cavity. The gaps between the copper busbar group and the inner wall of the installation cavity and between the installation parts of adjacent two copper busbars 3 are all filled with a plastic insulation refractory white clay layer 5

[0035] Specifically, a polyester insulating film is also wound outside the installation part of the copper bar 3. The polyester insulating film has a multi-layer structure, with an inner layer of reinforced polyester fiber and an outer layer of a fireproof coating. This multi-layer design can provide a higher protection level in case of an arc fault and can withstand a high temperature of about 235 °C. The plastic insulating refractory white clay layer 5 is wrapped outside the polyester insulating film to provide double insulation for the copper bar 3. The plastic insulating refractory white clay layer 5, in cooperation with the polyester insulating film, can withstand a high temperature of about 1300 °C. The copper bar 3 is also provided with connection ends, which are oppositely connected to both sides of the installation part, and after the copper bar 3 is installed, the connection ends are located outside the installation cavity. The connection ends are designed to be bent to facilitate better connection and adjustment. In the embodiment of the present invention, preferably, the copper bar group has 5 pieces to adapt to multi-phase systems or circuits with different power requirements, and to expand the application range of the fire-resistant and dense busbar trunking.

[0036] Furthermore, the cable tray cover plate is provided with a first cable tray cover plate 11 and a second cable tray cover plate 12, and the cable tray side plate is provided with a first cable tray side plate 21 and a second cable tray side plate 22. The first cable tray cover plate 11 and the second cable tray cover plate 12, and the first cable tray side plate 21 and the second cable tray side plate 22 are subjected to secondary oxidation resistance treatment and then fire-resistant coating spraying and baking attachment to improve the fire resistance of the fire-resistant and dense busbar trunking and ensure that it can operate for a certain period of time in case of a fire. The first cable tray cover plate 11 and the second cable tray cover plate 12, and the first cable tray side plate 21 and the second cable tray side plate 22 jointly enclose an installation cavity for installing the copper bar 3. The connection surfaces of the first cable tray cover plate 11 and the second cable tray cover plate 12, and the first cable tray side plate 21 and the second cable tray side plate 22 are designed to be flat to facilitate timely adjustment of the position after connection. A snap locking mechanism can also be provided at the joint of the first cable tray cover plate 11 and the second cable tray cover plate 12. The snap locking mechanism can be automatically locked when the first cable tray side plate 21 and the second cable tray side plate 22 are installed to ensure that the cable tray cover plate is not easily loosened during the installation process, thereby providing a more reliable fixing effect. The first cable tray cover plate 11 and the second cable tray cover plate 12 can also be provided with sliding rails, and the upper and lower ends of the first cable tray side plate 21 and the second cable tray side plate 22 are respectively provided with sliding protrusions, and the sliding protrusions can be quickly slidably connected to the sliding rails to achieve quick sliding installation, reduce manual operation time and improve installation efficiency. In the embodiment of the present invention, it is preferably a flat design to facilitate timely adjustment of the first cable tray side plate 21 and the second cable tray side plate 22 to make the filling of the plastic insulating refractory white clay layer 5 more uniform.

[0037] Furthermore, heat-conducting protrusions 23 for improving the heat dissipation efficiency are provided on the outer walls of the first wire groove side plate 21 and the second wire groove side plate 22. The heat-conducting protrusions 23 are arranged on the outer walls of the first wire groove side plate 21 and the second wire groove side plate 22 at equal intervals and in parallel, and arc-shaped protrusions 24 are also provided between adjacent two heat-conducting protrusions 23 to improve the heat dissipation efficiency by increasing the contact area with air; symmetric wavy small protrusions 231 are provided on both sides of the heat-conducting protrusions 23 to expand the contact area between the heat-conducting protrusions 23 and the external air and improve the heat dissipation efficiency.

[0038] Still further, heat dissipation grooves 13 for heat dissipation are provided on the first wire groove cover plate 11 and the second wire groove cover plate 12. The supporting edges on both sides of the heat dissipation grooves 13 are designed in an L shape, so that it can better fit the wall or the ground during installation to ensure the stability of the fire-resistant and dense busbar after installation. At the same time, a heat dissipation cavity is reserved for the fire-resistant and dense busbar to dissipate heat; the bottom surface of the heat dissipation grooves 13 is designed as a plane, so that the first wire groove cover plate 11 and the second wire groove cover plate 12 can be riveted or fastened to the first wire groove side plate 21 and the second wire groove side plate 22 through connectors to enhance the structural stability.

[0039] Further, the first wire groove cover plate 11, the second wire groove cover plate 12, the first wire groove side plate 21 and the second wire groove side plate 22 are made of aluminum-magnesium alloy profiles, which have a lower density and help to reduce the overall structural weight of the fire-resistant and dense busbar; the aluminum-magnesium alloy profiles have excellent thermal conductivity, enabling the fire-resistant and dense busbar to quickly dissipate heat during use, and the aluminum-magnesium alloy has a lower coefficient of thermal expansion, which helps to maintain dimensional stability under temperature changes to enhance the stability of the fire-resistant and dense busbar during use; heat-conducting tubes can also be embedded in the heat dissipation grooves 13, and phase change materials are filled in the heat-conducting tubes, which can absorb or release heat through the phase change process when the temperature changes, thereby stabilizing the temperature in the installation cavity and prolonging the service life of the fire-resistant and dense busbar.

[0040] The present utility model also provides a wire groove connection structure applied to a busbar, which is applicable to a fire-resistant and dense busbar as described above. The connecting ends of the copper bars 3 of the fire-resistant and dense busbar are electrically connected relatively on both sides of the wire groove connection structure, and the first wire groove cover plate 11, the second wire groove cover plate 12, the first wire groove side plate 21 and the second wire groove side plate 22 are respectively fixedly connected to the wire groove connection structure.

[0041] As Figures 6 to 8 shown, a wire groove connection structure applied to a busbar provided by an embodiment of the present utility model includes:

[0042] Connecting cover plate, the connecting cover plate is provided with a first connecting cover plate 61 and a second connecting cover plate 62. The first connecting cover plate 61 and the second connecting cover plate 62 are provided with installation grooves. Both sides of the installation groove are designed in an L shape opposite to the direction of the heat dissipation groove 13, and the heat dissipation groove 13 can be inserted into the installation groove to form a tight fit, preventing the longitudinal displacement of the fire-resistant and dense busbar during use, affecting the connection stability of the structure and facilitating the installation and positioning of the fire-resistant and dense busbar; the first connecting cover plate 61 and the second connecting cover plate 62 are movably connected to the first wire groove cover plate 11 and the second wire groove cover plate 12 through the installation groove and the heat dissipation groove 13 to improve the convenience of positioning and adjustment;

[0043] Connecting side plate 7, the connecting side plate 7 is provided with a same-side connecting side plate 71 and an opposite-side connecting side plate 72. The same-side connecting side plate 71 and the opposite-side connecting side plate 72 are respectively fixedly connected to the connection fixing holes surrounded by the wire groove cover plate and the wire groove side plate, and the same-side connecting side plate 71 and the opposite-side connecting side plate 72 together with the first connecting cover plate 61 and the second connecting cover plate 62 surround a connection cavity 9. A fire-resistant ceramic connector 91 is arranged in the connection cavity 9. The two sides of the fire-resistant and dense busbar are electrically connected through the fire-resistant ceramic connector 91; the fire-resistant ceramic connectors 91 are arranged in parallel at intervals to form a fire-resistant ceramic connector group. The fire-resistant ceramic connector group is used for connecting multiple copper bars 3 of the fire-resistant and dense busbar to achieve stable connection; the fire-resistant ceramic connector 91 is provided with a ceramic connection hole and connection pins. The connection pins are symmetrically arranged on both sides of the ceramic connection hole. The two sides of the fire-resistant and dense busbar are connected through the connection pins and fixed in the connection cavity 9 through the ceramic connection hole to ensure the reliability of the connection; the surface of the fire-resistant ceramic connector 91 is provided with an antioxidant coating. The coating can effectively prevent the oxidation and deterioration of the ceramic material in high-temperature and high-humidity environments, thereby improving the stability and reliability of the connector and extending the service life of the overall structure;

[0044] Connecting pressure plate, the connecting pressure plate is provided with a first connecting pressure plate 81 and a second connecting pressure plate 82. The first connecting pressure plate 81 and the second connecting pressure plate 82 are symmetrically designed, and the first connecting pressure plate 81 and the second connecting pressure plate 82 are respectively arranged on both sides of the same-side connecting side plate 71 and the opposite-side connecting side plate 72. The first connecting pressure plate 81 and the second connecting pressure plate 82 are connected by a connecting piece 85 to fasten the same-side connecting side plate 71, the opposite-side connecting side plate 72 and the fire-resistant ceramic connector 91; the connecting piece 85 is preferably a bolt to facilitate the quick installation and disassembly of the first connecting pressure plate 81 and the second connecting pressure plate 82 and improve production efficiency;

[0045] The connecting cover plate, connecting side plate 7, and connecting pressure plate are made of aluminum-magnesium alloy profiles, and the connecting cover plate, connecting side plate 7, and connecting pressure plate are subjected to secondary oxidation resistance treatment and then sprayed, baked, and adhered with refractory coatings to enhance the fire resistance and thermal conductivity of the wire trough connection structure; at the same time, aluminum-magnesium alloy has a low coefficient of thermal expansion, which helps to maintain dimensional stability under temperature changes, so as to enhance the structural stability of the wire trough connection structure in a high-temperature environment.

[0046] Specifically, side plate sealing portions 83 for sealing the same-side connecting side plate 71 and the opposite-side connecting side plate 72 are provided on the first connecting pressure plate 81 and the second connecting pressure plate 82. The side plate sealing portions 83 are respectively embedded in the same-side connecting side plate 71 and the opposite-side connecting side plate 72 to seal the connecting cavity 9, so as to prevent impurities and moisture from entering the connecting cavity 9 and extend the service life of the overall structure; fixing installation holes and elastic connecting portions 84 are further provided on the first connecting pressure plate 81 and the second connecting pressure plate 82. The fixing installation holes are provided on the side plate sealing portions 83, and the elastic connecting portions 84 are oppositely arranged on both sides of the fixing installation holes. The connecting member 85 is connected in the fixing installation holes on the first connecting pressure plate 81 and the second connecting pressure plate 82 and is limited by the elastic connecting portions 84, so as to limit and fasten the same-side connecting side plate 71, the opposite-side connecting side plate 72, and the refractory ceramic connector 91; the contact surfaces of the first connecting pressure plate 81 and the second connecting pressure plate 82 that are symmetrically designed relative to the side plate sealing portions 83 are flat designs, so as to facilitate the closer fitting of the first connecting pressure plate 81 and the second connecting pressure plate 82 with the same-side connecting side plate 71 and the opposite-side connecting side plate 72 and enhance the sealing performance of the structural connection.

[0047] Further, the same-side connection side plate 71 is provided with a first same-side connection side plate 711 and a second same-side connection side plate 712, and the opposite-side connection side plate 72 is provided with a first opposite-side connection side plate 721 and a second opposite-side connection side plate 722. The first same-side connection side plate 711 faces the first opposite-side connection side plate 721, and the second same-side connection side plate 712 faces the second opposite-side connection side plate 722. The first same-side connection side plate 711, the second same-side connection side plate 712, the first opposite-side connection side plate 721, and the second opposite-side connection side plate 722 are designed in an L shape. After the first same-side connection side plate 711, the second same-side connection side plate 712, the first opposite-side connection side plate 721, and the second opposite-side connection side plate 722 are installed, a sealed connection port is formed. The sealed connection port can be engaged by the side plate sealing portion 83 for sealing, and is tightly sealed by a connecting member 85. A white mud filling portion and a connector installation portion are respectively provided in the connection side plate cavity surrounded by the first same-side connection side plate 711 and the first opposite-side connection side plate 721 and the second same-side connection side plate 712 and the second opposite-side connection side plate 722. The white mud filling portion is for filling the plastic insulating refractory white mud layer 5, and the connector installation portion is for electrically connecting the refractory ceramic connector 91 and the copper row 3. A locking device is provided in the connector installation portion. The locking device can fix the refractory ceramic connector 91 to prevent it from loosening or shifting during the installation process or when the equipment is running, so as to ensure the reliability of the electrical connection.

[0048] It should be understood that in the present utility model, terms such as "first" and "second" are used to describe various information, but these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present utility model, the "first" information can also be called the "second" information, and similarly, the "second" information can also be called the "first" information. In addition, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0049] The above is the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art in the technical field, without departing from the principle of the present utility model, several improvements and deformations can be made, and these improvements and deformations are also regarded as the protection scope of the present utility model.

Claims

1. A fire-resistant and dense busway, characterized in that, Comprising: Trunking cover plate; Trunking side plates, and the trunking side plates and the trunking cover plate enclose an installation cavity; A plurality of busbars (3), the plurality of busbars (3) are stacked side by side to form a busbar group, each busbar (3) is provided with an installation part, the installation part of the busbar (3) is connected in the installation cavity, and the gaps between the busbar group and the inner wall of the installation cavity and between the installation parts of adjacent two busbars (3) are filled with a plastic insulating refractory white clay layer (5).

2. A fire-resistant and dense busbar trunking according to claim 1, characterized in that, A polyester insulating film is also wound outside the installation part of the busbar (3), and the plastic insulating refractory white clay layer (5) is wrapped outside the polyester insulating film to provide double insulation for the busbar (3).

3. The fire-resistant and dense busway according to claim 2, wherein, The trunking cover plate is provided with a first trunking cover plate (11) and a second trunking cover plate (12), the trunking side plates are provided with a first trunking side plate (21) and a second trunking side plate (22), and the first trunking cover plate (11), the second trunking cover plate (12), the first trunking side plate (21) and the second trunking side plate (22) jointly enclose an installation cavity for installing the busbar (3).

4. A fire-resistant and dense busbar trunking according to claim 3, characterized in that, Heat conduction protrusions (23) for improving the heat dissipation efficiency are provided on the outer walls of the first trunking side plate (21) and the second trunking side plate (22).

5. A fire-resistant and dense busbar trunking according to claim 3, characterized in that, Heat dissipation grooves (13) for heat dissipation are provided on the first trunking cover plate (11) and the second trunking cover plate (12).

6. A fire-resistant and dense busbar trunking according to claim 3, characterized in that, The first trunking cover plate (11), the second trunking cover plate (12), the first trunking side plate (21) and the second trunking side plate (22) are made of aluminum-magnesium alloy profiles.

7. A wire groove connection structure applied to a busway, characterized in that, Applicable to a fire-resistant compact busbar as described in any one of claims 3 to 6, and the connecting ends of the busbars (3) of the fire-resistant compact busbar are electrically connected relatively on both sides of the trunking connection structure.

8. The wiring duct connection structure applied to a bus duct according to claim 7, characterized in that, Comprising: A connecting cover plate, the connecting cover plate is provided with a first connecting cover plate (61) and a second connecting cover plate (62), and the first connecting cover plate (61) and the second connecting cover plate (62) are respectively connected to the first trunking cover plate (11) and the second trunking cover plate (12); A connecting side plate (7), the connecting side plate (7) is provided with a same-side connecting side plate (71) and an opposite-side connecting side plate (72), the same-side connecting side plate (71) and the opposite-side connecting side plate (72) are respectively fixedly connected to the connecting fixing holes formed by enclosing the trunking cover plate (1) and the trunking side plates, and the same-side connecting side plate (71), the opposite-side connecting side plate (72), the first connecting cover plate (61) and the second connecting cover plate (62) jointly enclose a connecting cavity (9), and a fire-resistant ceramic connector (91) is arranged in the connecting cavity (9), and two sides of the fire-resistant compact busbars are electrically connected through the fire-resistant ceramic connector (91); Connecting pressure plate, the connecting pressure plate is provided with a first connecting pressure plate (81) and a second connecting pressure plate (82). The first connecting pressure plate (81) and the second connecting pressure plate (82) are respectively arranged on both sides of the same-side connecting side plate (71) and the opposite-side connecting side plate (72). The first connecting pressure plate (81) and the second connecting pressure plate (82) are connected by a connecting member (85) to fasten the same-side connecting side plate (71), the opposite-side connecting side plate (72) and the refractory ceramic connector (91).

9. The wire groove connection structure applied to a busbar trunking according to claim 8, wherein, The first connecting pressure plate (81) and the second connecting pressure plate (82) are provided with a side plate sealing portion (83) for sealing the same-side connecting side plate (71) and the opposite-side connecting side plate (72).

10. The wiring duct connection structure applied to a busbar trunking according to claim 9, characterized in that, The same-side connecting side plate (71) is provided with a first same-side connecting side plate (711) and a second same-side connecting side plate (712), and the opposite-side connecting side plate (72) is provided with a first opposite-side connecting side plate (721) and a second opposite-side connecting side plate (722). The side plate sealing portion (83) can seal the sealed connection port formed after the connection of the first same-side connecting side plate (711) and the second same-side connecting side plate (712) with the first opposite-side connecting side plate (721) and the second opposite-side connecting side plate (722). The first same-side connecting side plate (711) is opposite to the first opposite-side connecting side plate (721), the second same-side connecting side plate (712) is opposite to the second opposite-side connecting side plate (722). The first same-side connecting side plate (711) and the first opposite-side connecting side plate (721) and the second same-side connecting side plate (712) and the second opposite-side connecting side plate (722) are respectively provided with a white clay filling portion and a connector installation portion. The white clay filling portion is for filling the plastic insulating refractory white clay layer (5), and the connector installation portion is for the electrical connection of the refractory ceramic connector (91) and the copper bar (3).

Images