A heat pipe heat dissipation structure of a coal mine underground explosion-proof shell
Patent Information
- Application Number
- CN202521420899.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-08
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-07-08
AI Technical Summary
[0002]目前井下隔爆壳体内部元器件功耗越来越大，大量需要散热的元器件在腔体内部积存大量热量，在地面机房有空调制冷降温，但在煤矿中使用需把设备装进隔爆壳体内，以防止点燃爆炸混合物，这样就使得设备产生的热量散发不出去，也不能通过空调来制冷，目前，针对煤矿场景，隔爆壳体通常采用自然对流散热或直接贴壁进行热量的传递，目前对流散热的结构主要是通过给隔爆壳体外冷却水的物理散热，以使作为发热源的芯片将热量传递至隔爆壳体，经过多次且频繁的换热，以使热量散出，然而随着目前井下隔爆壳体内部元器件功耗越来越大，设置芯片处的隔爆壳体内壁局部发热点高温情况严重，外加隔爆壳体内部密闭且散热区域面积小，较多的热量依旧留存在壳体内部无法散出壳体外部，导致腔体内温度越来越高，影响设备的正常运行和安全性能，高地热矿井中散热情况尤其恶劣
[0012]与现有技术相比，本实用新型的有益效果在于：本散热结构是为煤矿井下配合隔爆壳体适配设置的，本结构通过设置隔爆壳体板体内冷凝通道的封闭空间，能够实现冷凝液的密封相变避免挥发，具体的，当发热元件运行并开始发热时，靠近发热元件的各冷凝通道内且位于冷凝区中的冷凝液会吸收发热元件散出的热量后产生相变蒸发，此时蒸发的冷凝液会朝向上方温度相对较低的冷凝区转移依靠冷凝区中隔爆壳体较低的内壁实现换热，热量会通过隔爆壳体的板体散出，同时，蒸汽受冷后会凝结，凝结并达到一定量后会在重力作用下回流到冷凝通道底部的蒸发区，从而形成循环，增加散热效率，综上，本发明利用蒸发相变冷凝以及换热等原理，在隔爆壳体上实现热量的传导和转移，并充分利用远离散热点区域的壁面进行热量的向外传输，最大可能的降低发热元件的温度，从而保障设备安全持续运行。
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Figure CN224670118U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat dissipation technology, and in particular to a heat pipe heat dissipation structure for an explosion-proof shell in an underground coal mine. Background Technology
[0002] Currently, the power consumption of components inside explosion-proof enclosures in underground mines is increasing. Many components requiring heat dissipation accumulate significant heat inside the enclosure. While surface equipment rooms have air conditioning for cooling, in coal mines, the equipment must be housed within the explosion-proof enclosure to prevent the ignition of explosive mixtures. This prevents the heat generated by the equipment from dissipating and cannot be cooled by air conditioning. Currently, for coal mine scenarios, explosion-proof enclosures typically employ natural convection cooling or direct wall-mounted heat transfer. Current convection cooling structures primarily rely on physical heat dissipation through external cooling water, allowing the heat-generating chip to transfer heat to the enclosure. Through multiple and frequent heat exchanges, the heat is dissipated. However, with the increasing power consumption of components inside underground explosion-proof enclosures, the localized high temperatures at the chip locations on the inner wall of the enclosure are severe. Furthermore, the enclosed nature of the enclosure and the small heat dissipation area mean that a significant amount of heat remains inside and cannot escape, leading to increasingly higher temperatures within the enclosure. This affects the normal operation and safety performance of the equipment, especially in high-geothermal mines where heat dissipation is particularly challenging. Utility Model Content
[0003] This invention provides a heat pipe heat dissipation structure for an explosion-proof shell in an underground coal mine, which can quickly achieve heat dissipation for the heating element.
[0004] This utility model provides a heat pipe heat dissipation structure for an explosion-proof shell in a coal mine, used to dissipate heat from a heating element fixed on the inner wall of the explosion-proof shell. The structure is characterized by including multiple condensation channels located inside a plate on the side of the explosion-proof shell closest to the heating element, and also includes condensate. Each condensation channel extends longitudinally, with condensate filling the lower part of each channel. Each condensation channel is in a negative pressure and sealed environment, with gaps between them. Each condensation channel is closer to the heating element. The heating element is located at the bottom of the plate, and heat-dissipating silicone grease is applied between it and the inner wall of the plate. The lower half of the condensation channel forms an evaporation zone, and the upper half forms a condensation zone. As heat from the heating element dissipates, the condensate in the lower half of each condensation channel evaporates upon heating and condenses and falls from the condensation zone.
[0005] Preferably, the plate body has multiple connecting channels laterally opened for balancing the internal air pressure of the plate body and for connecting and collecting condensed liquid. The multiple connecting channels are evenly distributed along the longitudinal direction, and the connecting channels and each condensation channel form a negative pressure and sealed channel environment.
[0006] Preferably, the connecting channels are the same size as each condensation channel.
[0007] Preferably, the heating element is located between the two bottom connecting channels.
[0008] Preferably, the explosion-proof housing has multiple chutes on the outside of the plate on the side of the heating element to increase the heat dissipation area.
[0009] Preferably, each chute is opened longitudinally, and each chute is located between two adjacent condensation channels.
[0010] Ideally, the chute should be positioned to avoid contact with each connecting passage.
[0011] Preferably, one of the condensation channels and / or one of the connecting channels is provided with a filling port for filling condensate, and a sealing plug is provided at the filling port.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This heat dissipation structure is designed for use in conjunction with explosion-proof housings in underground coal mines. By setting a closed space for the condensation channel inside the explosion-proof housing plate, this structure can achieve a sealed phase change of the condensate to prevent evaporation. Specifically, when the heating element operates and begins to generate heat, the condensate in each condensation channel near the heating element and located in the condensation zone will absorb the heat emitted by the heating element and undergo phase change evaporation. At this time, the evaporated condensate will transfer to the relatively cooler condensation zone above, relying on the lower inner wall of the explosion-proof housing in the condensation zone to achieve heat exchange. The heat will be dissipated through the plate of the explosion-proof housing. At the same time, the steam will condense after being cooled. After condensation reaches a certain amount, it will flow back to the evaporation zone at the bottom of the condensation channel under the action of gravity, thus forming a cycle and increasing the heat dissipation efficiency. In summary, this invention utilizes the principles of evaporation, phase change, condensation, and heat exchange to achieve heat conduction and transfer on the explosion-proof housing, and makes full use of the wall surface far from the heat dissipation point for heat outward transmission, minimizing the temperature of the heating element as much as possible, thereby ensuring the safe and continuous operation of the equipment.
[0013] This heat dissipation structure fully utilizes the latent heat of vaporization of liquids for heat conduction and transfer, and makes full use of the wall surface far from the heat dissipation point for heat transfer outward, minimizing the temperature of the heat dissipation chip and ensuring the safe and continuous operation of the equipment. The entire heat dissipation process requires no external force; the circulation power comes from the internal components that need heat dissipation. This structure has no material entry or exit, requires no other energy input, does not cause pollution or waste, and requires no human maintenance. The condensate undergoes a process of heat absorption and evaporation, vaporization and rise, cooling and heat dissipation, condensation and liquefaction, and gravity return to enter the next thermal cycle in the condensation channel. This heat dissipation method can continuously carry the heat dissipated by the chip to the outside of the casing, greatly improving the wall surface heat dissipation efficiency and providing a higher guarantee for intelligent and unmanned mining in coal mines. Attached Figure Description
[0014] Figure 1A schematic diagram of a heat pipe heat dissipation structure for an explosion-proof shell in a coal mine, provided as an embodiment of this utility model;
[0015] Figure 2 A schematic diagram of the internal cross-sectional structure of the plate in a heat pipe heat dissipation structure for an explosion-proof shell in a coal mine, provided as an embodiment of this utility model;
[0016] Figure 3 for Figure 2 A schematic diagram of the structure from a frontal viewpoint;
[0017] Figure 4 A schematic diagram of the front view of a heat pipe heat dissipation structure for an explosion-proof shell in a coal mine, provided as an embodiment of this utility model;
[0018] Figure 5 for Figure 4 A schematic diagram of the structure viewed in section along the AA direction;
[0019] Figure 6 A schematic diagram of the chute structure of the plate in a heat pipe heat dissipation structure for an explosion-proof shell in a coal mine, provided as an embodiment of this utility model;
[0020] Figure 7 This is a schematic diagram of a heat pipe heat dissipation structure for an explosion-proof shell in a coal mine, provided as an embodiment of the present invention.
[0021] Explanation of reference numerals in the attached figures:
[0022] 1. Explosion-proof enclosure; 11. Plate; 111. Condensation channel; 112. Connecting channel; 113. Chute; 2. Heating element; 3. Condensate; 4. Evaporation zone; 5. Condensation zone. Detailed Implementation
[0023] The following describes a specific embodiment of the present invention in detail with reference to the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.
[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solution of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0025] refer to Figure 1 , Figure 2 and Figure 3 This utility model provides a heat pipe heat dissipation structure for an explosion-proof housing 1 in a coal mine, used to dissipate heat from a heating element 2 fixed on the inner wall of the explosion-proof housing 1. The structure is characterized by including multiple condensation channels 111 located inside a plate 11 on the side of the explosion-proof housing 1 closest to the heating element 2, and condensate 3. Each condensation channel 111 extends longitudinally, and the condensate 3 fills the lower part of each condensation channel 111. Each condensation channel 111 is in a negative pressure and sealed environment, with gaps between them. Each condensation channel 111 is closer to the heating element 2. The heating element 2 is disposed at the bottom of the plate 11, and heat-dissipating silicone grease is provided between it and the inner wall of the plate 11. The lower half of the condensation channel 111 forms an evaporation zone 4, and the upper half forms a condensation zone 5. As the heat from the heating element 2 dissipates, the condensate 3 in the lower half of each condensation channel 111 evaporates upon heating and condenses and falls into the condensation zone 5.
[0026] In the above embodiments, this heat dissipation structure is adapted to be used in conjunction with the explosion-proof housing 1 in underground coal mines. This structure, by setting a closed space in the condensation channel 111 inside the plate 11 of the explosion-proof housing 1, can achieve a sealed phase change of the condensate 3 to prevent volatilization. Specifically, when the heating element 2 is running and starts to generate heat, the condensate 3 in each condensation channel 111 near the heating element 2 and located in the condensation zone 5 will absorb the heat emitted by the heating element 2 and undergo phase change evaporation. At this time, the evaporated condensate 3 will transfer towards the relatively lower temperature condensation zone 5 above and rely on the explosion-proof space in the condensation zone 5. Heat exchange is achieved through the lower inner wall of the shell 1. Heat is dissipated through the plate 11 of the explosion-proof shell 1. At the same time, the steam condenses after cooling. Once the condensation reaches a certain amount, it flows back to the evaporation zone 4 at the bottom of the condensation channel 111 under the action of gravity, thus forming a cycle and increasing heat dissipation efficiency. In summary, this invention utilizes the principles of evaporation, phase change, condensation, and heat exchange to achieve heat conduction and transfer on the explosion-proof shell 1, and makes full use of the wall surface far from the heat dissipation point for heat transfer to the outside, thereby minimizing the temperature of the heating element 2 and ensuring the safe and continuous operation of the equipment.
[0027] This heat dissipation structure fully utilizes the latent heat of vaporization of liquids for heat conduction and transfer, and makes full use of the wall surface far from the heat dissipation point for heat outward transfer, minimizing the temperature of the heat dissipation chip and ensuring the safe and continuous operation of the equipment. The entire heat dissipation process requires no external force; the circulation power comes from the internal components that need heat dissipation. This structure has no material entry or exit, requires no other energy input, does not cause pollution or waste, and requires no human maintenance. The condensate 3 undergoes a process of heat absorption and evaporation, vaporization and rise, cooling and heat dissipation, condensation and liquefaction, and gravity return in the condensation channel 111 to enter the next thermal cycle. This heat dissipation method can continuously carry the heat emitted by the chip to the outside of the casing, greatly improving the wall surface heat dissipation efficiency and providing a higher guarantee for intelligent and unmanned mining in coal mines.
[0028] Meanwhile, since the pipeline is fully enclosed, water can be sprayed on the outside at any time, which can cool down the equipment and clean up the accumulated dust without affecting the equipment. Even better, a temperature sensor can be installed on the outside of the explosion-proof housing 1 to detect the temperature in real time. When the temperature is too high, it can remind manual or automated methods to further reduce the temperature on the outside of the explosion-proof housing 1 by spraying water. This setting is a technical solution that can be implemented in the future mentioned in this embodiment. Since it is not the focus of this structure design, this embodiment will not make too many structural descriptions and limitations.
[0029] Further, refer to Figure 3 The plate 11 has multiple connecting channels 112 that are opened laterally to balance the internal air pressure of the plate 11 and to connect and collect the condensate. The multiple connecting channels 112 are evenly distributed in the longitudinal direction, and the connecting channels 112 and each condensate channel 111 form a negative pressure and sealed channel environment.
[0030] In the above embodiments, the connecting channel 112 can serve as a pipe for balancing air pressure and liquid collection, so that the condensate 3 in each condensation channel 111 can be interconnected and exchange heat with each other. Specifically, in the horizontal direction, the temperature of the condensate 3 far away from the heating element 2 is lower than that of the condensate 3 near the heating element 2. When the size of the heating element 2 is limited, the condensate 3 near the heating element 2 in the evaporation zone 4 will move to the condensation zone 5 after evaporation and will also move to both sides through the connecting channel 112. At this time, the temperature of the condensation channels 111 on both sides is lower, and its heat exchange and condensation effect is better. The condensate 3 in each condensation zone 5 will flow downward after concentrated condensation, and then re-converge in the connecting channel 112 at the bottom and exchange heat with the condensate 3 near the heating element 2, thus going through a heat cycle process of heat absorption evaporation - vaporization rise - cooling heat dissipation - condensation liquefaction - convergence - gravity return.
[0031] Further, refer to Figure 1The connecting channel 112 has the same size as each condensation channel 111.
[0032] In the above embodiments, by limiting the size of the connecting channel 112 to be the same as that of each condensation channel 111, problems such as mutual communication being affected by differences in size and internal steps at intersections are avoided.
[0033] Further, refer to Figure 1 and Figure 4 The heating element 2 is located between the two connecting channels 112 at the bottom.
[0034] In the above embodiments, this embodiment defines a total of three connecting channels 112, which are located at the top, middle and bottom of the plate 11 respectively. The evaporation zone 4 formed is mainly between the middle connecting channel 112 and the lower connecting channel 112. The condensation zone 5 is distributed between the middle connecting channel 112 and the upper connecting channel 112. The heating element 2 itself is located in the evaporation zone 4 and is used to transfer its heat to the condensate 3 in the evaporation zone 4.
[0035] Further, refer to Figure 6 and Figure 7 The explosion-proof housing 1 has multiple chutes 113 on the outside of the plate 11 located on one side of the heating element 2 to increase the heat dissipation area.
[0036] In the above embodiments, in order to increase the heat dissipation area, the outer surface of the shell is longitudinally grooved to facilitate gas convection heat dissipation and to guide water flow when water is sprayed externally for cooling.
[0037] Further, refer to Figure 6 Each chute 113 is opened longitudinally, and each chute 113 is located between two adjacent condensation channels 111.
[0038] In the above embodiments, by limiting each chute 113 to be opened longitudinally, the water sprayed for external cooling can be guided longitudinally. By limiting each chute 113 to be located between two adjacent condensation channels 111, it can be closer to the corresponding condensation channel 111. Specifically, the chute 113 can be set as an inner arc-shaped chute or a square chute. Considering that a square chute has too many sharp corners, an arc-shaped chute is preferred. The chute 113 is concave to increase the heat dissipation area.
[0039] Further, refer to Figure 5 and Figure 6 The chute 113 is positioned to avoid the connecting channels 112.
[0040] In the above embodiments, specifically, the chute 113 is interrupted near the connecting channel 112 to ensure that the outer wall of the plate 11 in that area remains intact.
[0041] Further, refer to Figure 2 One of the condensation channels 111 and / or one of the connecting channels 112 is provided with a filling port for filling condensate 3, and a sealing plug is provided at the filling port.
[0042] In the above embodiments, the filling port enables the filling of condensate 3 and the preparation of a negative pressure environment, while the sealing plug ensures the sealing of the filling port.
[0043] Usage and working principle: When the heating element 2 heats up, the heat is transferred to the inner wall of the evaporation zone 4 plate 11 near the condensation channel 111 through the thermally conductive silicone grease. At this time, the heat will be transferred to the condensate 3 located in the condensation channel 111 of the evaporation zone 4. After absorbing a large amount of heat, the condensate 3 will evaporate and undergo a phase change, eventually vaporizing to form steam. The steam density decreases and the steam continues to rise along the internal channel of the evaporation channel to the condensation zone 5 with a lower temperature. Because the temperature of the outer wall of the explosion-proof housing 1 plate 11 is lower than the condensation temperature of the condensate 3, the condensate 3 vapor is condensed and re-condenses from gas to liquid. At this time, heat is released. After condensation reaches a certain amount, it will flow back to the evaporation zone 4 at the bottom of the condensation channel 111 under the action of gravity, thus forming a cycle.
[0044] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.
Claims
1. A heat pipe heat dissipation structure for an explosion-proof shell in a coal mine, used for heat dissipation of a heating element (2) fixed on the inner wall of the explosion-proof shell (1), characterized in that, The enclosure includes multiple condensation channels (111) located inside the plate (11) on the side of the explosion-proof housing (1) near the heating element (2), and also includes condensate (3). Each condensation channel (111) extends longitudinally, and the condensate (3) fills the lower part of the condensation channel (111). Each condensation channel (111) is in a negative pressure and sealed environment, and there is a gap between each condensation channel (111). The heating element (2) is located at the bottom of the plate (11). The lower half of the condensation channel (111) forms an evaporation zone (4), and the upper half forms a condensation zone (5). As the heat of the heating element (2) dissipates, the condensate (3) in the lower half of each condensation channel (111) is heated and evaporated and condensed and falls in the condensation zone (5).
2. The heat pipe heat dissipation structure for explosion-proof shells in coal mines as described in claim 1, characterized in that, The plate (11) has multiple connecting channels (112) in the transverse direction corresponding to each of the condensation channels (111) for balancing the internal air pressure of the plate (11) and for connecting and collecting the condensate (3). The multiple connecting channels (112) are evenly distributed in the longitudinal direction. The connecting channels (112) and each of the condensation channels (111) form a negative pressure and sealed channel environment.
3. The heat pipe heat dissipation structure for explosion-proof shells in coal mines as described in claim 2, characterized in that, The connecting channel (112) has the same size as each of the condensation channels (111).
4. A heat pipe heat dissipation structure for explosion-proof shells in coal mines as described in claim 2 or 3, characterized in that, The heating element (2) is located between the two bottommost connecting channels (112).
5. The heat pipe heat dissipation structure for explosion-proof shells in coal mines as described in claim 3, characterized in that, The explosion-proof housing (1) has multiple chutes (113) on the outside of the plate (11) on the side of the heating element (2) to increase the heat dissipation area.
6. The heat pipe heat dissipation structure for explosion-proof shells in coal mines as described in claim 5, characterized in that, Each of the chutes (113) is opened longitudinally, and each of the chutes (113) is located between two adjacent condensation channels (111).
7. The heat pipe heat dissipation structure for explosion-proof shells in coal mines as described in claim 6, characterized in that, The chute (113) is positioned to avoid the connection channels (112).
8. The heat pipe heat dissipation structure for explosion-proof shells in coal mines as described in claim 3, characterized in that, One of the condensation channels (111) and / or one of the connecting channels (112) is provided with a filling port for filling condensate (3), and a sealing plug is provided at the filling port.
9. The heat pipe heat dissipation structure for explosion-proof shells in coal mines as described in claim 1, characterized in that, Thermal grease is provided between the heating element (2) and the inner wall of the plate (11).