Air-cooled heat dissipation valve group for ice melting device

Abstract

This utility model belongs to the field of DC power transmission technology, and particularly relates to a wind-cooled heat dissipation valve assembly for an ice-melting device. It includes a heat dissipation unit, pressure plate I, pressure plate II, supporting vertical plate, top bolt, and pads. The supporting vertical plate is fixedly connected between pressure plate I and pressure plate II, forming a frame structure. The heat dissipation unit and heating elements are housed within the frame structure. There are N heating elements and N+1 heat dissipation units, where N is an integer. The heat dissipation units and heating elements are stacked on top of each other. A pad is provided between the heat dissipation unit and pressure plate II. The top bolt is threadedly connected to pressure plate II, and the bottom end of the top bolt abuts against the pad. Insulating blocks are connected to both sides of the heat dissipation unit. The insulating blocks have a U-shaped structure, and the supporting vertical plate is placed within the U-shaped structure, allowing the heat dissipation unit to slide between the supporting vertical plates. The advantages are: it adopts a press-fit structure, with all components integrated and press-fitted within the frame structure, resulting in a compact and reasonable structure.

Description

Technical Field

[0001] This utility model belongs to the field of DC power transmission technology, and in particular relates to an air-cooled heat dissipation valve group for an ice melting device. Background Technology

[0002] An ice-melting device is a specialized piece of equipment used for de-icing power transmission lines. Under extreme weather conditions, transmission lines are prone to ice accumulation, posing a threat to power grid safety. DC ice-melting devices apply direct current to the transmission lines, generating Joule heating to melt the ice from the conductors. As DC ice-melting devices develop towards greater intelligence, efficiency, and energy saving, the power consumption of their electronic components is increasing, while the overall size of the device is decreasing. While conventionally used heat pipe cooling valve assemblies can meet the heat dissipation requirements, their overall size is too large and their installation is inflexible. This necessitates a high-efficiency cooling valve assembly that can meet the heat dissipation needs of multiple components, is compact, conductive, and can withstand the installation pressure requirements of the components. Summary of the Invention

[0003] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a wind-cooled heat dissipation valve group for an ice-melting device, which can efficiently dissipate heat from the heating elements of the electric ice-melting device, can accommodate multiple heating elements at the same time, is both conductive and can withstand the clamping force of the heating elements, and is small in size and light in weight.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] A wind-cooled heat dissipation valve assembly for an ice-melting device includes a heat dissipation unit, pressure plate I, pressure plate II, supporting vertical plate, top bolt, and pad. The supporting vertical plate is fixedly connected between pressure plate I and pressure plate II, and pressure plate I, pressure plate II, and supporting vertical plate form a frame structure. The heat dissipation unit and heating element are disposed within the frame structure. There are N heating elements and N+1 heat dissipation units, where N is an integer. The heat dissipation units and heating elements are stacked on top of each other. A pad is provided between the heat dissipation unit and pressure plate II. The top bolt is threadedly connected to pressure plate II, and the bottom end of the top bolt abuts against the pad. Insulating blocks are connected to both sides of the heat dissipation unit. The insulating blocks have a U-shaped structure, and the supporting vertical plate is placed within the U-shaped structure, allowing the heat dissipation unit to slide between the supporting vertical plates.

[0006] The top bolt has a spherical protrusion at the bottom, and the pad has a spherical groove structure, with the spherical protrusion structure and the spherical groove structure cooperating.

[0007] The pressure plate I has threaded holes on both ends; the support plate has through holes, and the pressure plate I and the support plate are fixedly connected by fastening bolts, threaded holes, and through holes.

[0008] The heat dissipation unit includes heat sink I, heat sink II, support plate, and heat spreader. Several support plates are connected between heat sink I and heat sink II. Heat sink I and heat sink II have the same structure, each including a base plate and fins. One side of the base plate is fixedly connected to several fins, and the other side is attached to the heating element. Both ends of the support plate are fixedly connected to the base plates of heat sink I and heat sink II, respectively. The fins are disposed between the base plates of heat sink I and heat sink II. The heat spreader is fixedly connected to the base plate.

[0009] The support plate has a threaded hole at its end for connecting to the substrate; the support plate also has a threaded mounting hole for connecting to the insulating block.

[0010] The heat spreader is a sintered heat pipe or a channel heat pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] A wind-cooled heat dissipation valve assembly for an ice-melting device adopts a press-fit structure, with all components integrated and press-fitted within a frame structure, resulting in a compact and rational design. The heat dissipation unit employs double-sided heat dissipation from both the top and bottom, using a combination of heat pipes and air cooling, which reduces the size and weight of the overall heat dissipation valve assembly, while also ensuring electrical conductivity and withstanding the installation pressure requirements of the heat-generating components. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the heat dissipation unit.

[0015] Figure 3 This is a schematic diagram of the insulating block.

[0016] Figure 4 This is the front view of pressure plate I.

[0017] Figure 5 This is a side view of pressure plate I.

[0018] Figure 6 This is the front view of pressure plate II.

[0019] Figure 7 This is a side view of pressure plate II.

[0020] Figure 8 This is the front view of the supporting panel.

[0021] Figure 9 This is a cross-sectional view of the supporting upright.

[0022] Figure 10 This is a schematic diagram of the top bolt structure.

[0023] Figure 11This is a schematic diagram of the preload screw.

[0024] Figure 12 This is a cross-sectional view of the preload screw.

[0025] In the diagram: 1. Pressure plate I; 2. Fastening bolt; 3. Support plate; 4. Valve assembly mounting screw hole; 5. Pressure plate II; 6. Heat dissipation unit; 7. Heating element; 8. Pad; 9. Top bolt; 10. Fin; 11. Heat spreader; 12. Bolt; 13. Support plate; 14. Insulating block; 15. Insulating block fastening bolt; 16. Mounting countersunk hole; 17. U-shaped structure; 18. Mounting threaded hole; 19. Threaded through hole; 20. Mounting through hole; 21. Disc spring; 22. Large flat washer; 23. Retaining ring; 24. Pin; 25. Preload screw; 26. Preload rod; 27. Elongated through hole; 28. External thread; 29. ​​Internal cavity; 30. Limiting protrusion. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings. However, it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0027] See Figures 1-10 A wind-cooled heat dissipation valve assembly for an ice-melting device includes a heat dissipation unit 6, pressure plate I1, pressure plate II5, supporting vertical plate 3, top bolt 9, and pad 8. The supporting vertical plate 3 is fixedly connected between pressure plate I1 and pressure plate II5, forming a frame structure. The heat dissipation unit 6 and heating elements 7 are disposed within the frame structure. There are N heating elements 7 and N+1 heat dissipation units 6, where N is an integer. The heat dissipation units 6 and heating elements 7 are stacked on top of each other. A pad 8 is provided between the top heat dissipation unit 6 and pressure plate II5, and the bottom heat dissipation unit 6 is directly attached to pressure plate I1. The top bolt 9 is threaded to pressure plate II5, and its bottom end abuts against the pad 8, ensuring uniform force distribution on the valve assembly and meeting the clamping pressure requirements of the elements 7. Insulating blocks 14 are connected to both sides of the heat dissipation unit 6. The insulating blocks 14 are U-shaped structures 17. The supporting uprights 3 are placed inside the U-shaped structures 17, so that the heat dissipation unit 6 can slide between the supporting uprights 3.

[0028] The bottom surface of the U-shaped structure 17 of the insulating block 14 has a countersunk hole 16. The insulating block fastening bolt 15 passes through the insulating block 14 and connects to the heat dissipation unit 6. The top of the insulating block fastening bolt 15 is lower than the bottom surface of the U-shaped structure 17 of the insulating block 14. During the assembly of this heat dissipation valve assembly, the clamping force between the heat dissipation unit 6 and the heating element 7 is adjusted by controlling the thickness of the pad 8 and the screwing depth of the top bolt 9. During the assembly of this heat dissipation valve assembly, the support plate 3 is placed in the U-shaped structure of the insulating block 14. The heat dissipation unit 6 can slide and adjust longitudinally along the support plate 3, and the front and rear positions of the heat dissipation unit 6 can be restricted.

[0029] See Figures 10-12 The top bolt 9 has a spherical protrusion at its bottom, and the pad 8 has a spherical groove. The spherical protrusion and groove fit together. The force on the top bolt 9 is evenly transmitted to the pad 8 through the spherical protrusion, and then to the heat dissipation unit 6 and component 7 below through the pad 8. The spherical contact avoids the uneven force or excessive local force caused by planar contact, ensuring that component 7 is evenly stressed and extending its service life. The top bolt 9 includes a preload rod 26, a preload screw 25, a retaining ring 23, and disc springs 21. The preload screw 25 has a limiting protrusion 30 on its upper part, and the retaining ring 23 is connected in the middle of the preload screw 25. Several disc springs 21 are sleeved between the limiting protrusion 30 of the preload screw 25 and the retaining ring 23. Large flat washers 22 are provided between the disc springs 21. The preload screw 25 has a hollow structure, and the preload rod 26 is placed inside the hollow structure. The bottom of the preload rod 26 has a spherical protrusion structure. The preload screw 25 and the preload rod 26 have elongated through holes 27 of the same size in the middle. The pin 24 is inserted into the elongated through hole 27 in the middle of the preload screw 25 and the preload rod 26 to limit the position of the preload rod 26 and form a preload force. The lower edge of the retaining ring 23 abuts against the pin 24. The external thread of the pre-tightening screw 25 is screwed into the threaded through hole 19 of the pressure plate II 5. When the pre-tightening screw 25 is rotated, the disc spring 21 is deformed by force and pushes the pre-tightening rod 26 to generate pressure on the pad 8, heat dissipation unit 6, and component 7.

[0030] Both ends of pressure plate I are provided with mounting threaded holes; support plate 3 is provided with mounting through holes 20. Pressure plate I and support plate 3 are fixedly connected by fastening bolts 2, mounting threaded holes 18, and mounting through holes 20. Pressure plate I, pressure plate II, and pad 8 are made of steel plate to meet pressure requirements. Support plate 3 is made of insulating materials with good mechanical strength, such as fiberglass RF4 and epoxy fiberglass cloth board.

[0031] The heat dissipation unit 6 includes a heat sink I, a heat sink II, a support plate 13, and a heat spreader 11. Several support plates 13 connect heat sink I and heat sink II. Heat sink I and heat sink II have identical structures, each including a substrate and fins 10. One side of the substrate is fixedly connected to several fins 10, and the other side is in contact with the heating element 7. The support plate 13 has threaded holes at its ends for connection to the substrate. Both ends of the support plate 13 are fixedly connected to the substrates of heat sink I and heat sink II respectively by bolts 12. The fins 10 are positioned between the substrates of heat sink I and heat sink II. The heat spreader 11 is fixedly connected to the substrate, and the surface of the heat spreader 11 is flush with the surface of the substrate, allowing the heat from the heating element 7 to be quickly conducted to the edge of the substrate through the heat spreader 11, improving heat dissipation efficiency. The support plate 13 has threaded mounting holes for mounting insulating block fastening bolts 15 to connect the insulating block 14. The heat spreader 11 is a sintered heat pipe or a channel heat pipe, made of copper, to improve heat dissipation. Heat sink I, heat sink II, and support plate 13 are made of aluminum or copper. When the heat dissipation unit 6 is subjected to a very large clamping force in the direction perpendicular to the mounting surface of the heating element 7, the structure remains firm and does not deform under the action of the support plate 13 and the substrate; and the flatness of the mounting surface of the substrate meets the requirements of the mounting surface of the power device.

[0032] The air-cooled heat dissipation valve assembly used in the ice-melting device can be installed on the ice-melting device in various forms, such as vertical and horizontal, through the valve assembly mounting screw holes 4 on the frame structure. Forced air cooling of the heat dissipation unit 6 is achieved by a cooling fan, efficiently dissipating the heat from the heating element 7 into the outside air, ensuring that the element 7 operates within a safe temperature range. Multiple heating elements 7 require current to flow through them, forming a series circuit. After the heat dissipation unit 6, which houses the element 7, installs the element 7, current is conducted through heat sink I to heat sink II, completing the current conduction.

[0033] Through the above specific embodiments, those skilled in the art can easily implement this utility model. However, it should be understood that this utility model is not limited to the specific embodiments described above. Based on the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions. Due to space limitations and for the sake of brevity, not all of these combined solutions have been described. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wind-cooled heat dissipation valve assembly for an ice-melting device, characterized in that, The device includes a heat dissipation unit, pressure plate I, pressure plate II, supporting upright plate, top bolt, and pads. The supporting upright plate is fixedly connected between pressure plate I and pressure plate II. Pressure plate I, pressure plate II, and supporting upright plate form a frame structure. The heat dissipation unit and heating elements are set within the frame structure. There are N heating elements and N+1 heat dissipation units, where N is an integer. The heat dissipation units and heating elements are stacked on top of each other. A pad is provided between the heat dissipation unit and pressure plate II. The top bolt is threaded to pressure plate II, and the bottom end of the top bolt abuts against the pad. Insulating blocks are connected to both sides of the heat dissipation unit. The insulating blocks have a U-shaped structure. The supporting upright plate is placed within the U-shaped structure, allowing the heat dissipation unit to slide between the supporting upright plates.

2. The air-cooled heat dissipation valve assembly for an ice-melting device according to claim 1, characterized in that, The top bolt has a spherical protrusion at the bottom, and the pad has a spherical groove structure, with the spherical protrusion structure and the spherical groove structure cooperating.

3. A wind-cooled heat dissipation valve assembly for an ice-melting device according to claim 1, characterized in that, The pressure plate I has threaded holes on both ends; the support plate has through holes, and the pressure plate I and the support plate are fixedly connected by fastening bolts, threaded holes, and through holes.

4. A wind-cooled heat dissipation valve assembly for an ice-melting device according to claim 1, characterized in that, The heat dissipation unit includes heat sink I, heat sink II, support plate, and heat spreader. Several support plates are connected between heat sink I and heat sink II. Heat sink I and heat sink II have the same structure, each including a base plate and fins. One side of the base plate is fixedly connected to several fins, and the other side is attached to the heating element. Both ends of the support plate are fixedly connected to the base plates of heat sink I and heat sink II, respectively. The fins are disposed between the base plates of heat sink I and heat sink II. The heat spreader is fixedly connected to the base plate.

5. A wind-cooled heat dissipation valve assembly for an ice-melting device according to claim 4, characterized in that, The support plate has a threaded hole at its end for connecting to the substrate; the support plate also has a threaded mounting hole for connecting to the insulating block.

6. A wind-cooled heat dissipation valve assembly for an ice-melting device according to claim 4, characterized in that, The heat spreader is a sintered heat pipe or a channel heat pipe.

Images