A high-voltage cable grounding box

Abstract

The present invention discloses a high-voltage cable grounding box, comprising a box body and a wiring assembly connected to a high-voltage cable, wherein the wiring assembly is arranged inside the box body; the wiring assembly comprises a busbar and a plurality of rectangular wiring heads, wherein the plurality of wiring heads are arranged transversely on the busbar; and further comprising a heat dissipation assembly, wherein the heat dissipation assembly comprises a heat dissipation assembly, a driver and a cold row, wherein the driver and the cold row are arranged outside the box body, the heat dissipation assembly is detachably mounted on the busbar, the heat dissipation assembly is provided with a plurality of matching grooves for matching with the wiring heads, a flow channel for coolant to flow through is provided in the heat dissipation assembly, and the heat dissipation assembly, the driver and the cold row are connected in an end-to-end loop in sequence. The present invention achieves the purpose of heat dissipation by arranging a heat dissipation assembly, wherein the heat dissipation assembly comprises a heat dissipation assembly, a driver and a cold row, and the driver drives the coolant of the heat dissipation assembly to circulate between the cold row, the driver and the heat dissipation assembly, while achieving good heat dissipation effect and not damaging the sealing structure of the box body.

Description

Technical Field

[0001] The present invention relates to the technical field of grounding boxes, in particular to a high-voltage cable grounding box. Background Art

[0002] With the rapid development of urban construction and electricity, the demand for electricity is gradually increasing, and the coverage and operation of cables are also of great significance.

[0003] The high-voltage cable grounding box is used to place the grounding wire and protect the grounding wire. The grounding box and the grounding busbar share the same function, which is to collect the connection equipment of the grounding wire. It is specifically divided into direct grounding box, protective grounding box, three-phase cross-interconnected grounding box, and three-phase six-wire grounding box. The existing high-voltage cable grounding box can basically meet the daily use needs, but there are still some shortcomings that need to be improved.

[0004] In order to prevent external moisture from entering the box and causing damage to the electrical components inside the box, the existing high-voltage cable grounding box is usually designed as a closed space. However, since the high-voltage cable grounding box generates a large amount of heat during operation, if the generated heat cannot be dissipated in time, it will cause damage to the electrical components inside the box. Summary of the Invention

[0005] The problem to be solved by the present invention is to provide a high-voltage cable grounding box, which is provided with a heat dissipation component, which includes a heat dissipation seat, a driver and a cold row. The driver drives the coolant of the heat dissipation component to circulate between the cold row, the driver and the heat dissipation seat, thereby achieving the purpose of heat dissipation. The heat dissipation effect is good and the sealing structure of the box body will not be damaged.

[0006] The present invention provides a technical solution to solve the above problems: a high-voltage cable grounding box, comprising a box body and a wiring assembly connected to the high-voltage cable, the wiring assembly being arranged inside the box body; the wiring assembly comprising a busbar and a plurality of rectangular parallelepiped wiring terminals, the plurality of wiring terminals being arranged transversely on the busbar;

[0007] It also includes a heat dissipation component, which includes a heat sink, a driver and a cold row. The driver and the cold row are arranged outside the box. The heat sink can be detachably mounted on the busbar. The heat sink is provided with a plurality of matching grooves that match the terminal head. A flow channel for the coolant to flow through is provided in the heat sink. The heat sink, driver and cold row are connected in an end-to-end loop in sequence.

[0008] Preferably, avoidance grooves are provided on both sides of the matching groove in contact with the terminal head, a heat sink and an ejector are provided in the avoidance groove, a flow channel 2 connected to the flow channel 1 in the heat sink seat is provided in the heat sink, and the ejector pushes the heat sink out of the avoidance groove and abuts against the two side faces of the terminal head after the matching groove and the terminal head are matched.

[0009] Preferably, the ejector includes a piston cavity, a piston, a piston rod, a fixing bolt and several ejector airbags. The ejector airbag is arranged in the avoidance groove and one end face is against the heat dissipation plate. The piston cavity is arranged in the busbar. Both ends of the upper end face of the busbar are provided with threaded holes that cooperate with the fixing bolts. The threaded holes are connected with the piston cavity through the connecting hole. The piston is arranged in the piston cavity. One end of the piston rod is connected to the piston, and the other end extends into the connecting hole and is rotatably connected to the fixing bolt. The piston cavity is connected with several of the ejector airbags.

[0010] Preferably, the piston rod includes a connecting rod and a movable rod, an axial movable hole is provided on the connecting rod, one end of the movable rod cooperates with the movable hole, and the other end is fixedly connected to the piston, a spring 1 is mounted on the movable rod, one end of the spring 1 is fixedly connected to the piston, and the other end is fixedly connected to the lower end of the connecting rod.

[0011] Preferably, a radial mounting hole is provided on the movable rod, and a spring 2 and a positioning bead are provided in the mounting hole. One end of the spring 2 is fixedly connected to the bottom of the mounting hole, and the other end is fixedly connected to the positioning bead. The positioning bead extends out of the mounting hole away from one end of the spring 2.

[0012] Preferably, a positioning component for positioning the heat sink is provided in the avoidance groove.

[0013] Preferably, the positioning assembly includes a positioning rod and a transmission assembly, and a fixing plate 1 and a fixing plate 2 are respectively provided on both sides of the heat sink on the side facing away from the terminal head. The fixing plate 1 is provided with a movable groove and a positioning hole 1, and the fixing plate 2 is provided with a positioning hole 2. The positioning rod passes through the movable groove and is movably engaged with the positioning hole 2. The positioning rod is provided with a card joint that can engage with the positioning hole 1. The transmission assembly is arranged in the heat sink seat. When the terminal head is engaged with the engaging groove, the ejection part ejects the heat sink, and the positioning assembly forms the positioning of the heat sink. When the terminal head is disengaged from the engaging groove, the positioning assembly releases the positioning of the heat sink.

[0014] Preferably, the transmission assembly includes spring three, spring four, a matching rod, a driving rod and three transmission gears. A fixed groove one is provided on both sides of the bottom of the matching groove. One end of the spring three is fixedly connected to the bottom of the fixed groove one, and the other end is fixedly connected to the driving rod. One end of the driving rod extends out of the fixed groove one. The three transmission gears are laterally meshed with each other and installed in the heat dissipation seat. One side of the driving rod is provided with a transmission tooth one meshing with the transmission gear. A fixed groove two is provided in the heat dissipation seat. The matching rod is movably installed in the fixed groove two. One end of the spring four is fixedly connected to the positioning rod, and the other end is fixedly connected to the matching rod. The matching rod is provided with a transmission tooth two meshing with the transmission gear.

[0015] Preferably, the wiring head is provided with a wiring hole matched with the high-voltage cable and a clamping bolt for fixing the high-voltage cable.

[0016] Preferably, the box body is provided with a threading pipe that cooperates with the high-voltage cable.

[0017] Compared with the prior art, the advantages of the present invention are: the present invention sets a heat dissipation component, the heat dissipation component includes a heat sink, a driver and a radiator, and the driver drives the coolant of the heat dissipation component to circulate between the radiator, the driver and the heat sink, thereby achieving the purpose of heat dissipation. The heat dissipation effect is good and the sealing structure of the box will not be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 is a cross-sectional view of the present invention;

[0021] Figure 3 yes Figure 2 A magnified schematic diagram of point A in the middle;

[0022] Figure 4 yes Figure 2 A magnified schematic diagram of point B in the middle;

[0023] Figure 5 yes Figure 3 Enlarged view of point C in the middle Figure 1 ;

[0024] Figure 6 yes Figure 4 The enlarged schematic diagram of point D in the middle;

[0025] Figure 7It is a schematic diagram of the three-dimensional structure of the ejection air bag and the heat dissipation plate of the present invention;

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the busbar of the present invention;

[0027] Figure 9 yes Figure 3 Enlarged view of point C in the middle Figure 2 .

[0028] Attached figures are marked: 1. Box body, 2. Threading tube, 3. Liquid inlet pipe, 4. Confluence seat, 5. Fixing bolt, 6. Connecting rod, 7. Piston, 8. Spring 1, 9. Piston chamber, 10. Movable groove, 11. Movable rod, 12. Positioning bead, 13. Spring 2, 14. Wiring head, 15. Wiring hole, 16. Ejector airbag, 17. Positioning hole 2, 18. Heat sink, 19. Runner 2, 20. Positioning rod, 21. Card joint, 22. Positioning hole 1, 23. Spring 4, 24. Avoidance groove, 25. Matching rod, 26. Fixing groove 2, 27. Transmission gear, 28. Transmission gear 2, 29. Spring 3, 30. Drive rod, 31. Transmission gear 1, 32. Runner 1, 33. Tightening bolt, 34. Fixing plate 2, 35. Heat sink, 36. Fixing plate 1. DETAILED DESCRIPTION

[0029] The following will describe the embodiments of the present invention in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0030] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly refer to one or more of these features. Throughout the description of the present invention, "several" means two or more, unless otherwise specifically defined.

[0032] In the present invention, unless otherwise specified or limited, the terms "assemble," "connect," and "connect" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection; direct connection, connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0034] It should also be understood that the terms used in this description of the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the description of the embodiments of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0035] The specific embodiment of the present invention is shown in the accompanying drawings. A high-voltage cable grounding box includes a box body 1 and a wiring assembly connected to the high-voltage cable. The wiring assembly is arranged inside the box body 1; the wiring assembly includes a busbar 4 and a plurality of rectangular parallelepiped terminal blocks 14. The plurality of terminal blocks 14 are arranged horizontally on the busbar 4.

[0036] It also includes a heat dissipation component, which includes a heat sink 35, a driver and a cold row. The driver and the cold row are arranged outside the box 1. The heat sink 35 can be detachably mounted on the busbar 4. The heat sink 35 is provided with a plurality of matching grooves that cooperate with the terminal 14. The heat sink 35 is provided with a flow channel 32 for the coolant to flow through. The heat sink 35, the driver and the cold row are connected in an end-to-end loop in sequence.

[0037] It should be noted that, in the above scheme, the radiator and the driver belong to the scope of the existing technology, and the driver drives the coolant of the heat dissipation component to circulate between the radiator, the driver and the heat sink, thereby achieving the purpose of heat dissipation. Therefore, it is not described in detail in the present invention. The structure is known to those skilled in the art, so it is not specifically drawn in the accompanying drawings.

[0038] It should be noted that in order to ensure that the terminal head can be installed smoothly with the matching groove, there will be a certain installation gap between the terminal head and the matching groove. Therefore, in order to reduce the thermal resistance between the terminal head and the heat sink, thermal grease will be coated on the groove wall of the matching groove to fill the installation gap between the terminal head and the matching groove. However, during the installation of the terminal head and the matching groove, the thermal grease on the groove wall of the matching groove will be scraped off by the side of the terminal head. Therefore, if Figure 6 As shown, avoidance grooves 24 are provided on both sides of the matching groove in contact with the terminal head 14, and a heat sink 18 and an ejector are provided in the avoidance groove 24. The heat sink 18 is provided with a flow channel 2 19 connected to the flow channel 1 32 in the heat sink 35 (wherein, the flow channel 1 and the flow channel 2 are connected by a flexible hose to facilitate the movement of the heat sink in the avoidance groove). After the matching groove and the terminal head 14 are matched, the ejector pushes the heat sink out of the avoidance groove 24 and abuts against the two side surfaces of the terminal head 14; specifically, as Figure 3 As shown, the ejector includes a piston cavity 9, a piston, a piston rod, a fixing bolt 5 and a plurality of ejector airbags 16. The ejector airbag 16 is arranged in the avoidance groove 24 and one end face is against the heat dissipation plate 18. The piston cavity 9 is arranged in the busbar 4. Both ends of the upper end face of the busbar 4 are provided with threaded holes that cooperate with the fixing bolts 5. The threaded holes are connected to the piston cavity 9 through the connecting hole. The piston is arranged in the piston cavity 9. One end of the piston rod is connected to the piston, and the other end extends into the connecting hole and is rotatably connected to the fixing bolt 5. The piston cavity 9 is connected to the plurality of ejector airbags 16.

[0039] In the above scheme, before the heat sink is installed, the heat sink is first pushed into the avoidance groove so that the end face of the heat sink is lower than the end face of the avoidance groove, and then thermal grease is applied on the heat sink. The heat sink is then buckled onto the busbar, and then the fixing bolts are tightened. During the tightening process, the fixing bolts drive the piston and the piston rod to move downward, and then the air in the piston cavity is pressed into the ejection airbag. The ejection airbag expands to push the heat sink out of the avoidance groove and contact the side wall of the terminal head, thereby effectively preventing the thermal grease on the heat sink from being scraped off and improving the heat dissipation effect.

[0040] Those skilled in the art will know that if the ejector airbag is always in an expanded state, the ejector airbag is prone to leaking due to the high air pressure inside the ejector airbag. Therefore, further, Figure 3 As shown, the piston rod includes a connecting rod 6 and a movable rod 11. The connecting rod 6 is provided with an axial movable hole. One end of the movable rod 11 cooperates with the movable hole, and the other end is fixedly connected to the piston. A spring 8 is mounted on the movable rod 11. One end of the spring 8 is fixedly connected to the piston, and the other end is fixedly connected to the lower end of the connecting rod 6.

[0041] Furthermore, a radial mounting hole is provided on the movable rod 11, within which a second spring 13 and a positioning bead 12 are disposed. One end of the second spring 13 is fixedly connected to the bottom of the mounting hole, and the other end is fixedly connected to the positioning bead 12. The positioning bead 12 extends out of the mounting hole away from the end of the second spring 13. Furthermore, a positioning assembly for positioning the heat sink 18 is disposed within the avoidance groove 24.

[0042] In this embodiment, specifically, the positioning assembly includes a positioning rod 20 and a transmission assembly. A fixing plate 1 36 and a fixing plate 2 34 are respectively provided on both sides of the heat sink 18 on the side facing away from the terminal head 14. The fixing plate 1 36 is provided with a movable groove 10 and a positioning hole 1 22, and the fixing plate 2 34 is provided with a positioning hole 2 17. The positioning rod 20 passes through the movable groove 10 and is movably engaged with the positioning hole 2 17. The positioning rod 20 is provided with a clamping joint 21 that can engage with the positioning hole 1 22. The transmission assembly is arranged in the heat sink seat 35. When the terminal head 14 is engaged with the engaging groove, the ejection part ejects the heat sink 18, and the positioning assembly forms a positioning for the heat sink 18. When the terminal head 14 is disengaged from the engaging groove, the positioning assembly releases the positioning of the heat sink 18.

[0043] Furthermore, the transmission assembly includes a spring three 29, a spring four 23, a matching rod 25, a driving rod 30 and three transmission gears 27. A fixed groove one is provided on both sides of the bottom of the matching groove. One end of the spring three 29 is fixedly connected to the bottom of the fixed groove one, and the other end is fixedly connected to the driving rod 30. One end of the driving rod 30 extends out of the fixed groove one. The three transmission gears 27 are laterally meshed with each other and installed in the heat dissipation seat 35. One side of the driving rod 30 is provided with a transmission tooth one 31 that meshes with the transmission gear 27. A fixed groove two 26 is provided in the heat dissipation seat 35. The matching rod 25 is movably installed in the fixed groove two 26. One end of the spring four 23 is fixedly connected to the positioning rod 20, and the other end is fixedly connected to the matching rod 25. The matching rod 25 is provided with a transmission tooth two 28 that meshes with the transmission gear 27.

[0044] In the above scheme, the fixing bolt drives the piston downward during the tightening process, presses the gas in the piston chamber into the ejection airbag to expand the ejection airbag, and the initial state of the piston rod is as follows: Figure 5 As shown, at this time, the spring 1 is in a stretched state, and the positioning bead is extended from the mounting hole by the action of the spring 2 and is engaged with the lower end of the connecting rod. At this time, the fixing bolt is still moving downward with the piston rod, so that the air pressure in the ejection airbag continues to increase, and the positioning bead is pressed into the mounting hole under the reaction force of the ejection airbag (as shown in FIG. Figure 9As shown in the figure), at the same time, the piston moves upward under the action of spring 1 to extract the gas in the ejection airbag, and the ejection airbag no longer expands; in the process of the terminal head being clamped into the matching groove, the driving member in the matching groove contacts the upper part of the terminal head, and the driving member moves upward under the action of the terminal head, and the matching rod is driven downward by the transmission action of the three transmission gears. In the process of the matching rod moving downward, the card joint on the positioning rod is driven to be clamped into the positioning hole 1 on the fixing plate 1, and at the same time, one end of the positioning rod is clamped into the positioning hole 2 on the fixing plate 2, thereby realizing the positioning of the heat sink; when the heat sink needs to be disassembled, the fixing bolt is first loosened, and then the fixing bolt is pulled upward. In the process of pulling the fixing bolt upward, the connecting rod is driven upward, and the movable rod is positioned under the action of the piston, and the positioning bead no longer contacts the hole wall of the movable hole. The positioning bead is When the cam is in the air, it moves in a direction that the cam is in the air, and the cam is in the air, so ...

[0045] As another embodiment of the present invention, the wiring head 14 is provided with a wiring hole 15 for matching with the high-voltage cable and a clamping bolt 33 for fixing the high-voltage cable.

[0046] As another embodiment of the present invention, the box body 1 is provided with a wire threading tube 2 that cooperates with the high-voltage cable. The high-voltage cable passes through the wire threading tube and enters the wiring hole in the wiring head, and is then locked by a tightening bolt.

[0047] The above description is merely a description of the preferred embodiment of the present invention and is not to be construed as limiting the scope of the claims. The present invention is not limited to the above embodiment, and variations in the specific structure are permitted. Any variations within the scope of the independent claims of the present invention are also within the scope of protection of the present invention.

Claims

1. A high-voltage cable grounding box, comprising a box body and a wiring assembly connected to a high-voltage cable, wherein the wiring assembly is arranged inside the box body; characterized in that: The wiring assembly includes a busbar and a plurality of rectangular wiring heads, wherein the plurality of wiring heads are arranged transversely on the busbar; It also includes a heat dissipation assembly, which includes a heat sink, a driver, and a cold row. The driver and the cold row are arranged outside the box. The heat sink is detachably mounted on the busbar. The heat sink is provided with a plurality of matching grooves that match the terminal head. The heat sink is provided with a flow channel for the coolant to flow through. The heat sink, the driver, and the cold row are connected in an end-to-end loop in sequence. Avoidance grooves are provided on both sides of the matching groove in contact with the terminal head, a heat sink and an ejector are provided in the avoidance groove, a flow channel 2 is provided in the heat sink that is connected to the flow channel 1 in the heat sink seat, and the ejector pushes the heat sink out of the avoidance groove and abuts against two side surfaces of the terminal head after the matching groove and the terminal head are matched; The ejector includes a piston cavity, a piston, a piston rod, a fixing bolt, and a plurality of ejector airbags. The ejector airbag is arranged in the avoidance groove and one end face thereof abuts against the heat dissipation plate. The piston cavity is arranged in the busbar. Both ends of the upper end face of the busbar are provided with threaded holes that cooperate with the fixing bolts. The threaded holes are connected to the piston cavity through the connecting hole. The piston is arranged in the piston cavity. One end of the piston rod is connected to the piston, and the other end extends into the connecting hole and is rotatably connected to the fixing bolt. The piston cavity is connected to the plurality of ejector airbags. The piston rod includes a connecting rod and a movable rod, the connecting rod is provided with an axial movable hole, one end of the movable rod is matched with the movable hole, and the other end is fixedly connected to the piston, and a spring 1 is sleeved on the movable rod, one end of the spring 1 is fixedly connected to the piston, and the other end is fixedly connected to the lower end of the connecting rod; A radial mounting hole is provided on the movable rod, and a spring 2 and a positioning bead are provided in the mounting hole. One end of the spring 2 is fixedly connected to the bottom of the mounting hole, and the other end is fixedly connected to the positioning bead. The positioning bead extends out of the mounting hole away from the end of the spring 2.

2. A high-voltage cable grounding box according to claim 1, characterized in that: A positioning component for positioning the heat sink is provided in the avoidance groove.

3. A high-voltage cable grounding box according to claim 2, characterized in that: The positioning assembly includes a positioning rod and a transmission assembly. A fixing plate 1 and a fixing plate 2 are respectively provided on both sides of the heat sink facing away from the wiring head. The fixing plate 1 is provided with a movable groove and a positioning hole 1, and the fixing plate 2 is provided with a positioning hole 2. The positioning rod passes through the movable groove and is movably engaged with the positioning hole 2. The positioning rod is provided with a card joint that can engage with the positioning hole 1. The transmission assembly is arranged in the heat sink. When the wiring head is engaged with the engaging groove, the ejection part ejects the heat sink, and the positioning assembly forms a positioning for the heat sink. When the wiring head is disengaged from the engaging groove, the positioning assembly releases the positioning of the heat sink.

4. A high-voltage cable grounding box according to claim 3, characterized in that: The transmission assembly includes spring three, spring four, a matching rod, a driving rod and three transmission gears. A fixed groove one is provided on both sides of the bottom of the matching groove. One end of the spring three is fixedly connected to the bottom of the fixed groove one, and the other end is fixedly connected to the driving rod. One end of the driving rod extends out of the fixed groove one. The three transmission gears are laterally meshed with each other and installed in the heat dissipation seat. One side of the driving rod is provided with a transmission tooth one that meshes with the transmission gear. A fixed groove two is provided in the heat dissipation seat. The matching rod is movably installed in the fixed groove two. One end of the spring four is fixedly connected to the positioning rod, and the other end is fixedly connected to the matching rod. The matching rod is provided with a transmission tooth two that meshes with the transmission gear.

5. The high-voltage cable grounding box according to claim 1, characterized in that: The wiring head is provided with a wiring hole matched with the high-voltage cable and a clamping bolt for fixing the high-voltage cable.

6. The high-voltage cable grounding box according to claim 1, characterized in that: The box body is provided with a threading pipe matched with the high-voltage cable.

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