Bus duct for construction and connection of power grid

Abstract

The invention belongs to the technical field of power grid construction, and particularly relates to a bus duct for power grid construction connection, and the bus duct comprises a mounting frame which is used for supporting and fixing an overall structure; the shell is mounted on the inner side of the mounting frame, the shell comprises a bottom shell and a top cover, and auxiliary cooling fins are arranged on the surface of the bottom shell and the surface of the top cover; the bus bar is arranged in the shell and is used for conducting electricity; the heat conduction pad is attached to the outer side of the busbar and is used for conducting heat; the problems to be solved in the scheme are that a conventional bus duct is liable to be too high in local temperature rise, uneven in heat dissipation and poor in structural stability. According to the solution of the invention, heat is absorbed through the heat absorption pipe and the internal medium, the heat dissipation pump is matched to run to enable the medium to flow to the heat dissipation pipe, the communication pipe and the heat dissipation pipe conduct heat to rapidly dissipate heat outwards, and the heat conduction pad and the auxiliary heat dissipation fins are matched to assist in dissipating heat outwards, so that rapid heat dissipation of the bus bar can be realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of power grid construction, and particularly relates to a busbar trunking for power grid construction connection. Background Art

[0002] With the continuous expansion of the scale of modern power systems and the rapid development of new energy power generation technologies, higher requirements are put forward for the reliability, safety, and efficiency of power transmission and distribution equipment in power grid construction; as a core component in the power system for carrying large current transmission and distribution, busbar trunking is widely used in scenarios such as substations, industrial factories, data centers, and new energy power generation stations, and its performance directly affects the operation efficiency and power supply quality of the power network; In the prior art, conventional busbar trunking mostly adopts a natural convection heat dissipation structure, such as surface heat sinks or air convection designs, but there are the following defects during long-term high-load operation: Excessive local temperature rise: The natural heat dissipation efficiency is low, resulting in the local temperature of the busbar reaching above 70°C, accelerating the aging of insulating materials; Uneven heat dissipation: Heat is easily concentrated in the gaps between busbars, forming a "heat island effect", increasing the risk of short circuits; Poor structural stability: Traditional support structures are difficult to adapt to thermal expansion and deformation, resulting in seal failure or connection loosening; Therefore, it is necessary to design a busbar trunking for power grid construction connection to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a busbar trunking for power grid construction connection to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A busbar trunking for power grid construction connection, comprising: An installation frame for supporting and fixing the overall structure; A housing installed inside the installation frame, the housing includes a bottom shell and a top cover, and auxiliary heat sinks are provided on the surfaces of the bottom shell and the top cover; Busbars arranged inside the housing for conducting electricity; Thermal pads attached to the outer sides of the busbars for conducting heat; A heat dissipation mechanism including an absorption tube, a heat dissipation tube, a heat dissipation pump, and a connecting pipe, wherein the absorption tube is installed between the busbars and is connected to the heat dissipation tube and the heat dissipation pump through the connecting pipe to form a circulating heat dissipation channel, and main heat sinks are welded on the surface of the heat dissipation tube; A support mechanism for fixing the absorption tube and ensuring its sealed connection with the connecting pipe.

[0005] Preferably, the cross-sectional shapes of the heat absorption pipe and the heat dissipation pipe are square. The heat dissipation pipe is fixed on the outer side of the bottom case, and a sealing ring is provided at the connection between the communication pipe and the heat absorption pipe.

[0006] Preferably, the support mechanism includes a support main board, a support push board and a push screw. The support push board is driven by the push screw. Threads with opposite helix directions are provided at both ends of the push screw and are screwed with push nuts. A transmission rod is rotatably installed on the outer side of the push nut, and the other end of the transmission rod is rotatably connected to the support push board. The push screw is rotatably connected to the support main board through a bearing.

[0007] Preferably, an installation pad is provided on one side of the support push board, and a positioning card slot is opened on one side of the heat absorption pipe. The installation pad is engaged with the positioning card slot; the adjustment turning head of the push screw is hidden in the hidden slot of the support main board.

[0008] Preferably, the bus bar includes a bus bar main body, a fluidized insulation layer and an insulation sheath. The heat conduction pad is composed of a heat conduction board, a heat conduction carbon fiber layer and a heat conduction graphite film in a composite manner.

[0009] Preferably, the mounting bracket includes a mounting hanging plate, a mounting support plate and a limiting card plate. The mounting support plate fixes the bottom case through a limiting bolt, and an air ventilation fan is provided in the air vent of the mounting hanging plate.

[0010] Preferably, heat conduction capillary protrusions are provided on the inner wall of the heat absorption pipe to accelerate heat exchange.

[0011] Preferably, a guiding sliding groove is provided on the inner side of the support main board, and the push nut is slidably connected to the guiding sliding groove through a guiding slider.

[0012] Preferably, the heat dissipation pump drives the heat dissipation medium to circulate between the heat absorption pipe and the heat dissipation pipe.

[0013] Preferably, the auxiliary heat dissipation fins cooperate with the heat conduction pad to form a multi-layer heat dissipation path.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. Through the designed heat dissipation mechanism, the heat absorption pipe is supported between the bus bars. The heat absorption pipe and the internal cooling medium absorb heat, and cooperate with the operation of the heat dissipation pump to make the cooling medium flow to the heat dissipation pipe, and quickly dissipate heat outward through the heat conduction of the communication pipe and the heat dissipation pipe; and cooperate with the heat conduction pad and the auxiliary heat dissipation fins to assist in dissipating heat outward, and the air ventilation fan assists the heat dissipation mechanism to quickly dissipate the heat, which can accelerate the heat dissipation of the bus bars for the second time. The capillary structure of the heat conduction capillary protrusions facilitates the rapid heat exchange with the internal cooling medium during heat conduction, and further enhances the heat dissipation.

[0015] 2. Through the designed support mechanism, when the bus bar and the heat absorption tubes are alternately installed in sequence during use, they are supported between the heat absorption tubes by the support mechanism, thereby ensuring that the heat absorption tubes are stably installed inside the bottom case, and ensuring stable connection between the heat absorption tubes and the connecting pipes through the support of the heat absorption tubes, avoiding leakage at the connection points.

[0016] 3. Through the designed mounting bracket, when in use, the outer case is installed through the mounting bracket, and the outer case is composed of a bottom case and a top cover. The limit clamping plate and the mounting support plate of the mounting bracket can cooperate to clamp and position the bottom case, thereby ensuring that the outer case is more stable when installed and used through the mounting bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of the present invention; Figure 2 is a schematic cross-sectional structural view of the present invention; Figure 3 is a schematic heat dissipation structural view of the present invention; Figure 4 is a schematic structural view of the support mechanism of the present invention; Figure 5 is a schematic support adjustment structural view of the present invention; Figure 6 is a schematic structural view of the heat conduction pad of the present invention; Figure 7 is a schematic structural view of the bus bar of the present invention; Figure 8 is a schematic structural view of the mounting bracket of the present invention; Figure 9 is a schematic top view structural view of the present invention; Figure 10 is a schematic heat absorption tube positioning and installation structural view of the present invention; In the figure: 1. Outer case; 11. Bottom case; 12. Top cover; 2. Heat dissipation mechanism; 21. Heat dissipation pump; 22. Heat dissipation tube; 23. Heat absorption tube; 231. Heat conduction capillary protrusion; 232. Positioning card slot; 24. Connecting pipe; 25. Main heat dissipation fin; 26. Auxiliary heat dissipation fin; 3. Support mechanism; 31. Support main board; 32. Support push plate; 321. Installation pad; 33. Adjusting rotating head; 34. Push screw; 35. Push nut; 36. Transmission rod; 37. Hidden groove; 4. Bus bar; 41. Bus bar body; 42. Fluidized insulation layer; 43. Insulation sheath; 5. Heat conduction pad; 51. Heat conduction plate; 52. Heat conduction carbon fiber layer; 53. Heat conduction graphite film; 6. Mounting bracket; 61. Mounting suspension plate; 62. Mounting support plate; 63. Limit bolt; 64. Limit clamping plate; 65. Ventilation port; 66. Ventilation fan. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment 1: A busbar for power grid construction connection, including a mounting frame 6 and a housing 1 installed inside the mounting frame 6. A busbar 4 is installed inside the housing 1, a heat-conducting pad 5 is arranged outside the busbar 4, and a heat dissipation mechanism 2 is arranged outside the housing 1; the housing 1 includes a bottom shell 11 and a top cover 12 fixedly installed on the bottom shell 11, and auxiliary heat dissipation fins 26 are arranged on the surfaces of the bottom shell 11 and the top cover 12; the heat dissipation mechanism 2 includes a heat dissipation pipe 22 fixed outside the bottom shell 11 and a heat absorption pipe 23 installed between the busbars 4. A support mechanism 3 is arranged between the heat absorption pipes 23. One end of the heat dissipation pipe 22 is connected to a heat dissipation pump 21, and the heat dissipation pump 21: the flow rate range is 0.8 - 2 L / min, and the power consumption ≤ 50 W; the heat dissipation pump 21 and the heat dissipation pipe 22 are communicated with the heat absorption pipe 23 through a connecting pipe 24. The busbar 4 generates heat, which is absorbed by the heat absorption pipe 23. At the same time, the heat dissipation pump 21 operates to drive the cooling medium to flow between the heat absorption pipe 23 and the heat dissipation pipe 22, so as to assist the heat absorption pipe 23 to quickly suck out the heat of the busbar 4, and then dissipate heat outward through the heat dissipation pipe 22 and the main heat dissipation fins 25; the heat dissipation pipe 22 is fixedly installed outside the bottom shell 11, and the cross-sectional shapes of the heat absorption pipe 23 and the heat dissipation pipe 22 are both set to be square, which is convenient for installation between the busbars 4 during use and convenient for the internal cooling medium to circulate for heat absorption and heat dissipation; the connecting pipe 24 is fixedly installed at one end of the heat dissipation pipe 22 and one end of the heat dissipation pump 21. The two ends of the heat absorption pipe 23 are provided with bayonets corresponding to the position of the connecting pipe 24, and sealing rings are arranged inside the bayonets, which is convenient for the quick connection between the connecting pipe 24 and the heat absorption pipe 23 during use.

[0020] The busbar 4 includes a busbar main body 41. A fluidized insulation layer 42 is arranged outside the busbar main body 41. The fluidized insulation layer 42: epoxy resin EP - 230 (temperature resistance grade H, dielectric strength ≥ 30 kV / mm). An insulation sheath 43 is arranged outside the fluidized insulation layer 42 to enhance the insulation ability of the busbar main body 41 and facilitate installation and use; the heat-conducting pad 5 includes a heat-conducting plate 51, the heat-conducting plate 51 is attached to the bottom shell 11 and the top cover 12, a heat-conducting carbon fiber layer 52 is arranged on one side of the heat-conducting plate 51, and a heat-conducting graphite film 53 is arranged on one side of the heat-conducting carbon fiber layer 52. The directional heat conduction of the heat-conducting carbon fiber layer 52 and the horizontal heat conduction of the heat-conducting graphite film 53 are used to avoid local overheating and facilitate quick heat conduction and heat dissipation.

[0021] As can be seen from the above description, the present invention has the following beneficial effects: During use, the heat absorption tube 23 is supported between the busbars 4. Heat is absorbed by the heat absorption tube 23 and the internal cooling medium, and in cooperation with the operation of the heat dissipation pump 21, the cooling medium flows to the heat dissipation tube 22, and heat is quickly dissipated outward through the connecting pipe 24 and the heat dissipation tube 22. In addition, with the cooperation of the heat conduction pad 5 and the auxiliary heat dissipation fins 26, heat is dissipated outward, quickly dissipating heat from the busbars 4.

[0022] Embodiment 2: On the basis of Embodiment 1, the support mechanism 3 is provided, which includes a support main board 31. Support push plates 32 are slidably installed on both sides of the support main board 31. Guide plates are provided at both ends of the support push plates 32. The support push plates 32 are slidably installed in the support main board 31. A push screw 34 is rotatably installed in the middle of the support main board 31. A push nut 35 is sleeved on the outer side of the push screw 34. One side of the push nut 35 is rotatably installed with a transmission rod 36. One end of the transmission rod 36 is rotatably installed on one side of the support push plate 32. One end of the push screw 34 passes through the support main board 31 and is provided with an adjustment turning head 33. The support mechanism 3 is installed between the heat absorption tubes 23. When using a tool to rotate the adjustment turning head 33 to drive the push screw 34 to rotate, the push screw 34 drives the push nut 35 to move, thereby driving the transmission rod 36 to rotate, so that the transmission rod 36 pushes the support push plate 32 to slide and support on the heat absorption tube 23; A hidden groove 37 is provided at the end of the support main board 31. The adjustment turning head 33 is located inside the hidden groove 37, and the shape of the adjustment turning head 33 is set as a hexagonal column, which is convenient for hiding the adjustment turning head 33 during use; Guide chutes are provided on the inner side of the support main board 31. Guide sliders are provided on one side of the push nut 35. The push nut 35 is slidably installed in the support main board 31 through the guide sliders and the guide chutes, and the push nut 35 slides more stably during adjustment.

[0023] For the support mechanism 3 adopting the above technical solution, when the busbars 4 and the heat absorption tubes 23 are alternately installed in sequence during use, the support mechanism 3 supports between the heat absorption tubes 23, thereby ensuring the stable installation of the heat absorption tubes 23 inside the bottom case 11, and ensuring the stable connection between the heat absorption tubes 23 and the connecting pipe 24 through the support of the heat absorption tubes 23, avoiding the phenomenon of leakage at the connection.

[0024] Thermal conductive capillary protrusions 231 are installed on the inner wall of the heat absorption tube 23. The thermal conductive capillary protrusions 231: copper-based composite material, density ≥ 2000 pieces / cm². A positioning card slot 232 is provided on one side of the heat absorption tube 23. An installation pad 321 is fixedly installed on one side of the support push plate 32. The support push plate 32 is clamped on the heat absorption tube 23 through the installation pad 321 and the positioning card slot 232; The positioning slot 232 and the mounting pad 321 adopting the above technical solution are used to position between the support push plate 32 and the heat absorption tube 23 during use, so as to facilitate positioning and installation when installing the heat absorption tube 23 and the support push plate 32. The capillary structure of the heat conduction capillary protrusion 231 facilitates rapid heat exchange with the internal cooling medium during heat conduction, thereby accelerating heat dissipation.

[0025] Furthermore, the mounting frame 6 includes a mounting suspension plate 61. The lower end of the mounting suspension plate 61 is provided with a mounting support plate 62. The two ends of the mounting support plate 62 are provided with limit bolts 63. One side of the mounting suspension plate 61 is provided with a limit clamping plate 64. The bottom case 11 is supported on the mounting support plate 62, and the limit clamping plate 64 is clamped on the outside of the bottom case 11. The outer case 1 is clamped and supported by the mounting support plate 62 and the limit clamping plate 64, and is hoisted to the use position through the mounting suspension plate 61. A ventilation port 65 is provided at a position corresponding to the limit clamping plate 64 on one side of the mounting suspension plate 61, and a ventilation fan 66 is provided inside the ventilation port 65. When in use, when hoisted to the use position, the ventilation fan 66 can operate to blow air onto the main heat sink 25, thereby accelerating heat dissipation.

[0026] The mounting frame 6 adopting the above technical solution is used to install the outer case 1 during use. The outer case 1 is composed of a bottom case 11 and a top cover 12. The limit clamping plate 64 and the mounting support plate 62 of the mounting frame 6 cooperate to position and clamp the bottom case 11, so as to ensure that the outer case 1 is more stable when installed and used through the mounting frame 6.

[0027] The working principle and usage process of the present invention: When installing, place the heat conduction pad 5 at the inner bottom of the bottom case 11, then place the bus bar 4, place the heat absorption tube 23 on the bus bar 4, and install the support mechanism 3 between the heat absorption tubes 23. Use a tool to rotate the adjusting head 33 to drive the push screw 34 to rotate. The push screw 34 drives the push nut 35 to move, thereby driving the transmission rod 36 to rotate, so that the transmission rod 36 pushes the support push plate 32 to slide and support on the heat absorption tube 23, so that the clamping port on one side of the heat absorption tube 23 is closely attached to one end of the connecting pipe 24, strengthening the seal while ensuring connection. Then, install the bus bar 4 and the heat absorption tube 23 in sequence. Finally, place the heat conduction pad 5 on the top, cover the top cover 12 on the upper side of the bottom case 11 and fix it with bolts. When installing and using, the outer case 1 is clamped and supported by the mounting support plate 62 and the limit clamping plate 64, and is hoisted to the use position through the mounting suspension plate 61. When in use, the bus bar 4 generates heat, which is absorbed by the heat absorption tube 23. At the same time, the heat dissipation pump 21 operates to drive the cooling medium to flow between the heat absorption tube 23 and the heat dissipation tube 22, thereby assisting the heat absorption tube 23 to quickly extract the heat of the bus bar 4, and then dissipate heat outward through the heat dissipation tube 22 and the main heat sink 25. At the same time, it is assisted to dissipate heat outward through the heat conduction pad 5 and the auxiliary heat sink 26.

[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

[0029] As described above, it is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A bus duct for connecting a power grid, characterized in that: include: A mounting frame (6) for supporting and fixing the overall structure; A housing (1) is mounted on the inner side of the mounting frame (6), the housing (1) comprising a bottom housing (11) and a top cover (12), and auxiliary heat sinks (26) are provided on the surfaces of the bottom housing (11) and the top cover (12); A busbar (4) is arranged inside the housing (1) and is used for conducting electricity; A thermal pad (5) is attached to the outside of the busbar (4) and is used to conduct heat; The heat dissipation mechanism (2) comprises a heat absorption pipe (23), a heat dissipation pipe (22), a heat dissipation pump (21) and a connecting pipe (24), wherein the heat absorption pipe (23) is installed between the busbars (4) and is connected to the heat dissipation pipe (22) and the heat dissipation pump (21) via the connecting pipe (24) to form a circulating heat dissipation channel, and a main heat sink (25) is welded on the surface of the heat dissipation pipe (22); The support mechanism (3) is used to fix the heat absorption tube (23) and ensure its sealed connection with the connecting tube (24).

2. The bus duct according to claim 1, characterized in that: The cross-sectional shapes of the heat absorbing tube (23) and the heat dissipating tube (22) are square; the heat dissipating tube (22) is fixed to the outside of the bottom shell (11); and a sealing ring is provided at the connection between the connecting tube (24) and the heat absorbing tube (23).

3. The bus duct according to claim 1, characterized in that: The support mechanism (3) comprises a support main plate (31), a support push plate (32) and a push screw (34); the support push plate (32) is driven by the push screw (34); both ends of the push screw (34) are provided with threads with opposite rotation directions and are screwed with a push nut (35); a transmission rod (36) is rotatably mounted on the outer side of the push nut (35); the other end of the transmission rod (36) is rotatably connected to the support push plate (32); and the push screw (34) is rotatably connected to the support main plate (31) via a bearing.

4. The bus duct according to claim 3, characterized in that: A mounting pad (321) is provided on one side of the support push plate (32), a positioning slot (232) is provided on one side of the heat absorption tube (23), and the mounting pad (321) is engaged with the positioning slot (232); the adjusting rotating head (33) of the pushing screw (34) is hidden in a hidden slot (37) of the support main board (31).

5. The bus duct according to claim 1, characterized in that: The busbar (4) comprises a busbar body (41), a fluidized insulation layer (42) and an insulation sheath (43); the thermally conductive pad (5) is composed of a thermally conductive plate (51), a thermally conductive carbon fiber layer (52) and a thermally conductive graphite film (53).

6. The bus duct according to claim 1, characterized in that: The mounting frame (6) comprises a mounting hanger plate (61), a mounting support plate (62) and a limiting clamping plate (64); the mounting support plate (62) is fixed to the bottom shell (11) via limiting bolts (63); and a ventilation fan (66) is provided in the vent (65) of the mounting hanger plate (61).

7. The bus duct according to claim 1, characterized in that: The inner wall of the heat absorbing tube (23) is provided with heat-conducting capillary protrusions (231) for accelerating heat exchange.

8. The bus duct according to claim 3, characterized in that: A guide slot is provided on the inner side of the supporting main board (31), and the pushing nut (35) is slidably connected to the guide slot via a guide slider.

9. The bus duct according to claim 1, characterized in that: The heat dissipation pump (21) drives the heat dissipation medium to circulate between the heat absorption pipe (23) and the heat dissipation pipe (22).

10. The bus duct according to claim 1, characterized in that: The auxiliary heat sink (26) cooperates with the thermal pad (5) to form a multi-layer heat dissipation path.

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