High-efficiency heat dissipation structure for explosion-proof lamp

Abstract

The application discloses a high-efficiency heat dissipation structure for an explosion-proof lamp and relates to the technical field of explosion-proof lighting. The high-efficiency heat dissipation structure for the explosion-proof lamp comprises a shell, a light-transmitting plate is installed at the bottom of the shell, and a circuit board is arranged in the shell. The first vane is arranged in the shell, the gas flow in the shell can be disturbed by the first vane, the speed of heat transfer in the shell to the heat dissipation section is improved, meanwhile, the second vane is suspended on the shell by magnetic force, the contradiction between the heat dissipation efficiency and safety of the traditional explosion-proof lamp is effectively solved by the non-contact heat dissipation structure, the external gas is blown to the heat dissipation section by the second vane, the cooling effect of the heat dissipation section is improved, the heat dissipation efficiency of the shell is improved, and the heat dissipation effect is stronger than that of the prior art. When being in a working state for a long time, the heat generated in the shell can be quickly dissipated, so that the temperature of the working environment of the light source, the sealing element or the electronic element is reduced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of explosion-proof lighting, in particular to a high-efficiency heat dissipation structure for explosion-proof lamp. BACKGROUND

[0002] The explosion-proof lamp, also known as explosion-proof lighting device, is a lighting device specially designed for flammable and explosive environment. Its core principle is to prevent internal electric arc, spark or high temperature from igniting external explosive gas mixture through special structure. The explosion-proof lamp has two suspension modes, i.e. hanging suspension and wall hanging suspension.

[0003] At present, although various measures are taken in the design of explosion-proof lamp, due to the influence of the use environment, it is often necessary to adopt the way of heat dissipation fins and heat conduction materials to dissipate heat to the outside. The sealing design of the explosion-proof lamp greatly affects its heat dissipation effect, causing the explosion-proof lamp to work in a high-temperature environment for a long time, thereby shortening the service life of the light source, aging and damaging the sealing parts or causing electronic component failure, and further reducing the explosion-proof performance. In view of the above problems, no effective solution has been proposed so far. SUMMARY

[0004] The present application aims to provide a high-efficiency heat dissipation structure for explosion-proof lamp to at least solve one of the problems existing in the prior art.

[0005] Technical solution: A high-efficiency heat dissipation structure for explosion-proof lamp, comprising:

[0006] a housing;

[0007] a light-transmitting plate arranged at the bottom of the housing along a first direction;

[0008] a circuit board arranged in the housing along the first direction and located on the side close to the light-transmitting plate;

[0009] a plurality of light sources distributed on the circuit board;

[0010] a first blade rotatably installed in the housing for driving the gas to flow in the housing according to a preset direction;

[0011] a second blade suspended outside the housing by magnetic force;

[0012] a heat dissipation section arranged on the housing and located in the output direction of the second blade; and

[0013] a ring plate rotatably fitted in the housing and magnetically connected with the second blade;

[0014] Among them, the first blade and the second blade are arranged at different preset positions in the designated position of the housing, respectively, to direct and circulate the heat dissipation section.

[0015] As preferred, the heat dissipation section comprises a heat dissipation cylinder connected perpendicularly with the top of the shell, the heat dissipation cylinder is provided with heat dissipation fins in annular distribution outside, the inner wall of the heat dissipation cylinder is configured with spiral blades, and a pipe body is connected through the spiral blades, and the pipe body extends towards the heat dissipation cylinder and the light-transmitting plate at both ends respectively, an annular plate for mounting the circuit board is connected to the bottom end of the pipe body, the outer side of the first blade ring is rotationally matched with the heat dissipation cylinder and the pipe body respectively, and an annular motor is mounted on the outer side of the pipe body, with the output end connected with the first blade.

[0016] As preferred, a relay is arranged inside the pipe body, and the annular motor and the circuit board are electrically connected with the relay, an annular frame is connected inside the pipe body, a plurality of copper sheets are arranged in parallel on the annular frame at intervals, and the relay is fixed on the top of the copper sheet.

[0017] As preferred, the second blade is made of graphene material, and the outer surface is plated with a metal film.

[0018] As preferred, the inner side and the outer side of the second blade ring are respectively connected with a first magnetic ring and a second magnetic ring, a mounting frame is arranged outside the heat dissipation cylinder, a first annular magnet and a second annular magnet are mounted on the mounting frame, and the bottom sides of the first magnetic ring and the second magnetic ring are repelled magnetically, and the bottom of the mounting frame is annularly provided with a connecting block, which is connected with the top of the shell through the connecting block.

[0019] As preferred, the bottom of the second blade is annularly provided with a connecting column, the bottom end of the connecting column is connected with a third magnetic ring, and the top of the ring plate is provided with an attracting ring, and the third magnetic ring is magnetically connected with the attracting ring.

[0020] As preferred, the attracting ring is annularly distributed by a plurality of magnets, at least part of the magnets repel the third magnetic ring magnetically, and the number of the magnets is less than that of the magnets which attract the third magnetic ring magnetically.

[0021] As preferred, the mounting frame comprises two annular plates arranged concentrically, the first annular magnet and the second annular magnet are mounted on the two annular plates respectively, a first cylinder is connected to each of the annular plates and located inside the first magnetic ring and outside the second magnetic ring respectively, the two first cylinders are connected through a connecting plate, a second cylinder is rotationally mounted on the first cylinder through a bearing, and the second cylinder is provided with an annular buffer pad.

[0022] As preferred, the ring plate is connected with the outer side of the first blade ring.

[0023] As preferred, an annular cavity is configured in the heat dissipation cylinder, a vibration sensor is mounted in the annular cavity, and probes are annularly distributed outside the vibration sensor.

[0024] The beneficial effects of the present application are as follows:

[0025] The application improves the speed of heat transfer in the shell to the heat dissipation section by setting the first blade in the shell, which can disturb the gas flow in the shell, and the second blade is suspended on the shell by magnetic force, which effectively solves the contradiction between the heat dissipation efficiency and safety of the traditional explosion-proof lamp by the innovative non-contact heat dissipation structure, and blows the external gas to the heat dissipation section by the second blade, so as to speed up the cooling effect of the heat dissipation section, thereby improving the heat dissipation efficiency of the shell, compared with the prior art, the heat dissipation effect of the application is stronger, and the heat generated in the shell can be quickly dissipated when it is in the working state for a long time, thereby reducing the temperature of the working environment of the light source, the sealing element or the electronic element, and prolonging the service life. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a perspective view of the high-efficiency heat dissipation structure for the explosion-proof lamp of the application;

[0027] Figure 2 is a semi-perspective view of the high-efficiency heat dissipation structure for the explosion-proof lamp of the application;

[0028] Figure 3 is a perspective view of the high-efficiency heat dissipation structure for the explosion-proof lamp of the application; Figure 2

[0029] Figure 4 is a perspective view of the high-efficiency heat dissipation structure for the explosion-proof lamp of the application; Figure 3

[0030] Figure 5 is a perspective view of the high-efficiency heat dissipation structure for the explosion-proof lamp of the application; Figure 3

[0031] Figure 6 is a perspective view of the high-efficiency heat dissipation structure for the explosion-proof lamp of the application;

[0032] Figure 7 is a perspective view of the high-efficiency heat dissipation structure for the explosion-proof lamp of the application;

[0033] Figure 8 is a perspective view of the high-efficiency heat dissipation structure for the explosion-proof lamp of the application; Figure 7

[0034] Figure 9 is a perspective view of the high-efficiency heat dissipation structure for the explosion-proof lamp of the application;

[0035] Figure 10 is a perspective view of the high-efficiency heat dissipation structure for the explosion-proof lamp of the application; and

[0036] Figure 11 is an intelligent control method of the high-efficiency heat dissipation structure for the explosion-proof lamp of the application.​​​​

[0037] Reference signs are:

[0038] 1. housing;

[0039] 2. light-transmitting plate;

[0040] 3. circuit board;

[0041] 4. light source;

[0042] 5. heat dissipation section; 501, heat dissipation cylinder; 502, heat dissipation fin; 503, pipe body; 504, annular plate;

[0043] 6. first vane;

[0044] 7. second vane;

[0045] 8. ring plate;

[0046] 9. annular motor;

[0047] 10. helical vane;

[0048] 11. relay;

[0049] 12. annular frame;

[0050] 13. copper sheet;

[0051] 14. first magnetic ring;

[0052] 15. second magnetic ring;

[0053] 16. mounting frame; 1601, annular plate; 1602, first cylinder; 1603, second cylinder; 1604, annular buffer pad; 1605, connecting plate;

[0054] 17. first annular magnet;

[0055] 18. second annular magnet;

[0056] 19. connecting block;

[0057] 20. connecting column;

[0058] 21. third magnetic ring;

[0059] 22. attracting ring;

[0060] 23. annular cavity;

[0061] 24. vibration sensor;

[0062] 25. probe. DETAILED DESCRIPTION

[0063] In order to make the personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor should belong to the scope of protection of the present application.

[0064] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0065] In addition, the terms "mount", "set", "provided with", "connected", "connected", "sleeved" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0066] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0067] As shown in Figures 1-10 The present application relates to a high-efficiency heat dissipation structure for an explosion-proof lamp. The high-efficiency heat dissipation structure for the explosion-proof lamp comprises: a shell 1, which is a flameproof shell 1 with high strength and good sealing performance;

[0068] A light-transmitting plate 2 is arranged at the bottom of the shell 1 in a first direction. It can achieve good assembly effect, thereby ensuring good light-transmitting effect. The first direction refers to the horizontal direction, and can also be the X-axis direction in a two-coordinate system. Preferably, the light-transmitting plate 2 is made of explosion-proof glass.

[0069] The circuit board 3 is arranged in the first direction in the shell 1 and is located close to the light-transmitting plate 2, the circuit board 3 is parallel to the light-transmitting plate 2, a plurality of light sources 4 are distributed on the circuit board 3, the light source 4 is an LED lamp bead, the light source 4 is located on the side of the circuit board 3 facing the light-transmitting plate 2, the shell 1 has a heat dissipation section 5, and heat generated when the light source 4 emits light in the shell 1 can be exchanged with the outside through the heat dissipation section 5 to dissipate heat.

[0070] The first blade 6 is rotatably arranged in the shell 1 and is used for driving the gas to flow in the shell 1, the first blade 6 is rotated to disturb the gas in the shell 1, so that the high-temperature gas can be in full contact with the heat dissipation section 5 to facilitate heat transfer.

[0071] The second blade 7 is suspended on the outside of the shell 1 by magnetic force, the structure adopts a magnetic suspension principle, the second blade 7 is not in contact with the shell 1, the heat dissipation section 5 is located in the output direction of the second blade 7, when the second blade 7 rotates, the outside gas can be blown to the heat dissipation section 5 to accelerate the cooling effect of the heat dissipation section 5, the ring plate 8 is rotatably arranged in the shell 1, and the ring plate 8 is magnetically connected with the second blade 7, when the ring plate 8 rotates, the second blade 7 can be driven to rotate under the traction of the magnetic force.

[0072] The first blade 6 and the second blade 7 are arranged at different preset positions in the specified positions of the shell 1 to be directionally and circularly heat-dissipated to the heat dissipation section 5.

[0073] It should be specifically explained that, since the second blade 7 is suspended on the outside of the shell 1 by magnetic force, the second blade 7 and the shell 1 are not in mechanical contact, and the second blade 7 will not generate friction heat and frictional static electricity with the shell 1 in the rotating process, so that the second blade 7 can adapt to the flammable and explosive environment, thereby solving the contradiction between the heat dissipation efficiency and safety of the traditional explosion-proof lamp, and greatly improving the heat dissipation efficiency of the shell 1.

[0074] The first blade 6 is arranged in the shell 1, the first blade 6 can disturb the gas flow in the shell 1 to improve the speed of heat transfer in the shell 1 to the heat dissipation section 5, meanwhile, the second blade 7 is suspended on the shell 1 by magnetic force, the innovative non-contact heat dissipation structure effectively solves the contradiction between the heat dissipation efficiency and safety of the traditional explosion-proof lamp, the outside gas is blown to the heat dissipation section 5 by the second blade 7 to accelerate the cooling effect of the heat dissipation section 5, thereby improving the heat dissipation efficiency of the shell 1, compared with the prior art, the heat dissipation effect of the shell 1 is stronger, the heat generated in the shell 1 can be quickly dissipated when the shell 1 is in a long-term working state, so as to reduce the temperature of the working environment of the light source 4, the sealing element or the electronic element, and prolong the service life.

[0075] As Figures 1-4As shown, the specific structure of the heat dissipation section 5 is disclosed, the heat dissipation section 5 comprises: the heat dissipation cylinder 501 vertically connected with the top of the shell 1, the top end of the heat dissipation cylinder 501 is sealed, the outer ring of the heat dissipation cylinder 501 is distributed with the heat dissipation fins 502, by increasing the contact area of the heat dissipation cylinder 501 with the outside air, to improve its heat dissipation effect, the inner wall of the heat dissipation cylinder 501 is constructed with the spiral blade 10, and the pipe body 503 is connected through the spiral blade 10, the time of the hot air passing through the heat dissipation cylinder 501 can be prolonged through the spiral blade 10, so that it can be in full contact with the heat dissipation cylinder 501 and the spiral blade 10, thereby improving the heat exchange efficiency, the pipe body 503 and the heat dissipation cylinder 501 are located on the same axis, and the pipe body 503 extends towards the heat dissipation cylinder 501 and the light transmission plate 2 direction at both ends respectively, it needs to be specifically pointed out here that the pipe body 503 has a spacing between both ends and the heat dissipation cylinder 501 and the light transmission plate 2, so as to form a circulating channel in the shell 1, that is, when the air in the shell 1 enters the heat dissipation cylinder 501 for heat exchange, it will enter the pipe body 503 from the top end of the heat dissipation cylinder 501, and then enter the shell 1 again through the pipe body 503, the bottom end of the pipe body 503 is connected with the annular plate 504 for mounting the circuit board 3, the circuit board 3 has a gap with the light transmission plate 2, when the cooled gas reenters the shell 1 from the bottom end of the pipe body 503, the gas passes through the above-mentioned gap and carries away the heat of the light source on the circuit board 3, the first blade 6 is ring-shaped, the outer side of the first blade 6 is rotatably connected with the heat dissipation cylinder 501, and the inner side of the first blade 6 is rotatably connected with the pipe body 503, the outer side of the pipe body 503 is provided with the annular motor 9, the annular motor 9 is an explosion-proof motor, and the output end of the annular motor 9 is connected with the first blade 6, in this way, when the annular motor 9 works, the first blade 6 rotates to draw the air in the shell 1 into the heat dissipation cylinder 501, and the circulating flow of the gas in the shell 1 can be realized through the above-mentioned circulating channel, so that the heat dissipation effect is good.

[0076] As Figure 2 and Figure 3As shown, the application discloses further technical solutions for the pipe body 503. The pipe body 503 is provided with a relay 11. The explosion-proof lamp is hung at a high position, and the switch is realized through the relay 11. The annular motor 9 and the circuit board 3 are electrically connected with the relay 11. The annular motor 9 is connected in series in the circuit of the circuit board 3. The inner diameter of the pipe body 503 is smaller than the distance between the heat dissipation cylinder 501 and the outer side of the pipe body 503, that is, the gas flow speed in the pipe body 503 is fast, and the gas passing through the heat dissipation cylinder 501 can sufficiently cool the relay 11, so that the relay 11 is not easy to be damaged due to aging. The pipe body 503 is connected with an annular frame 12. The annular frame 12 is close to the top end of the pipe body 503. A plurality of copper sheets 13 are arranged in parallel on the annular frame 12. The relay 11 is fixed on the top of the copper sheet 13. Even if the relay 11 does not work in a high-temperature environment, the relay 11 will gradually age after long-term use. The aged relay 11 will generate an electric arc. Through the above design, when the relay 11 generates an electric arc, the flowing air can blow the electric arc to the plurality of copper sheets 13. The plurality of copper sheets 13 divide the electric arc to extinguish the arc, so that the combustible and explosive gas in the explosion-proof lamp is not easy to be ignited, thereby improving the service life and safety performance of the explosion-proof lamp.

[0077] As shown in Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , the application discloses further technical solutions for the second blade 7. The second blade 7 is made of graphene. Graphene has the advantage of low density, reduces the suspension energy consumption, and is convenient to drive to rotate. The outer surface is coated with a metal film. The metal film is aluminum or copper with a thickness of 0.1-1 μm. It needs to be specifically pointed out that in the rotating process of the first blade 6, static electricity is easy to be generated due to friction with air. The static electricity is negative. The high conductivity of the metal film enables it to more efficiently interact with free positive and negative ions in the environment, that is, the negatively charged metal film surface will attract positive ions in the air, gradually neutralize the charge, and thus prevent the generation of static electricity.

[0078] As shown in Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the second blade 7 is connected with the first magnetic ring 14 and the second magnetic ring 15 respectively at the inner side and the outer side of the ring, the outer side of the heat dissipation cylinder 501 is provided with the mounting frame 16, the mounting frame 16 is located at the bottom of the heat dissipation fin 502, the first annular magnet 17 and the second annular magnet 18 are installed on the mounting frame 16, the two are concentric rings, and are repulsive to the bottom side of the first magnetic ring 14 and the second magnetic ring 15 respectively, the repulsive force generated by the first annular magnet 17 and the second annular magnet 18 on the first magnetic ring 14 and the second magnetic ring 15 can make the second blade 7 in a suspended state, cooperating with the ring plate 8 magnetically connected with the second blade 7, the movement of the second blade 7 can be constrained, so that the suspended position is not easy to deviate, the mounting frame 16 is annularly distributed with the connecting block 19, and the connecting block 19 is connected with the top of the shell 1, under the action of the connecting block 19, there is a gap between the bottom of the second blade 7 and the shell 1, when the second blade 7 rotates, external air can enter the bottom of the second blade 7 from the gap.

[0079] As shown in Figure 2 , Figure 4 , Figure 5 and Figure 7 , the second blade 7 is annularly distributed with the connecting column 20 at the bottom, the connecting column 20 is connected with the third magnetic ring 21 at the bottom end, the top of the ring plate 8 is provided with the attracting ring 22, the third magnetic ring 21 is magnetically connected with the attracting ring 22, it needs to be specifically pointed out here that the shell 1 is made of aluminum alloy material cooperated with stainless steel material, the part between the third magnetic ring 21 and the attracting ring 22 is made of stainless steel material, and the magnetic conduction effect is good, such design can drive the third magnetic ring 21 to drive the second blade 7 to rotate when the ring plate 8 rotates in the shell 1.

[0080] As shown in Figure 2 , Figure 3 , Figure 5 and Figure 9As shown, the application discloses further solutions for the attracting ring 22, the attracting ring 22 is distributed by a plurality of magnetic rings; wherein, at least part of the magnetic rings repel the third magnetic ring 21, and the number of the magnetic rings is less than that of the magnetic rings attracting the third magnetic ring 21, although the repulsion force generated by the repelling magnetic rings can offset part of the attraction force of the attracting magnetic rings, but because the number of the attracting magnetic rings is more, the total attraction force is greater than the total repulsion force, when the attracting ring 22 is a whole, the attraction force of the attracting ring 22 to the third magnetic ring 21 cannot be adjusted, that is, the suspension height of the second blade 7 is fixed under the repulsion force of the first annular magnet 17 and the second annular magnet 18, and it is difficult to adjust according to actual needs, for example: when the explosion-proof lamp irradiates downward, the second blade 7 is located above the first annular magnet 17 and the second annular magnet 18, and the gravity of the second blade 7 is offset by the repulsion force generated by the first annular magnet 17 and the second annular magnet 18, and when the explosion-proof lamp irradiates upward, the second blade 7 is located below the first annular magnet 17 and the second annular magnet 18, at this time, the attracting force of the attracting ring 22 needs to additionally overcome the gravity of the second blade 7, by adopting the above design, by controlling the proportion of the magnetic rings attracting the third magnetic ring 21 and the magnetic rings repelling the third magnetic ring 21 on the ring plate 8, the attraction force of the attracting ring 22 to the third magnetic ring 21 can be adjusted, and the applicability is improved.

[0081] As shown in Figure 2 , Figure 3 , Figures 5-8 As shown, the application discloses specific structures of the mounting frame 16, the mounting frame 16 comprises: two annular plates 1601 arranged concentrically, the first annular magnet 17 and the second annular magnet 18 are respectively installed on the two annular plates 1601, the connecting block 19 is located at the bottom of the two annular plates 1601, the annular plate 1601 is connected with the first cylinder 1602, and the first cylinder 1602 is located inside the first magnetic ring 14 and outside the second magnetic ring 15, respectively, the two first cylinders 1602 are connected through the connecting plate 1605, the connecting plate 1605 is annularly distributed on the top of the two first cylinders 1602, the first cylinder 1602 is rotatably installed with the second cylinder 1603 through a bearing, so that the rotating resistance of the second cylinder 1603 is small, the annular buffer pad 1604 is arranged on the second cylinder 1603, the annular buffer pad 1604 is a rubber pad, and the two annular buffer pads 1604 are close to the first magnetic ring 14 and the second magnetic ring 15, respectively;

[0082] In use of the device, the second blade 7 is easy to be offset by external force factors. Through the above design, when the second blade 7 is slightly offset, the first magnetic ring 14 and the second magnetic ring 15 on both sides of the second blade 7 will collide with the two annular buffer pads 1604 respectively. Through the design of the two annular buffer pads 1604, on the one hand, the offset angle of the second blade 7 can be constrained, and on the other hand, the impact force can be buffered, so that the second blade 7 can be effectively prevented from producing sparks due to rigid collision. When the two annular buffer pads 1604 are in contact with the first magnetic ring 14 and the second magnetic ring 15 respectively, the second cylinder 1603 drives the annular buffer pad 1604 to rotate with the second blade 7, so that the first magnetic ring 14 and the second magnetic ring 15 are not easy to be stuck between the two annular buffer pads 1604.

[0083] As shown in Figure 3 , Figure 5 and Figure 9 , the further scheme of the present application for the linkage of the ring plate 8 and the first blade 6 is disclosed. The ring plate 8 is connected to the outer side of the first blade 6, and can drive the ring plate 8 to rotate synchronously when the first blade 6 rotates. Such design links the first blade 6 and the second blade 7, so that they can be driven to rotate by one ring motor 9, so that the two blades can work cooperatively. At the same time, by reducing the driving source, the safety hidden danger in the shell 1 can be reduced.

[0084] As shown in Figure 2 , Figure 3 , Figure 5 and Figure 10 , the further technical scheme of the present application for how to reset the second blade 7 after offset is disclosed. The annular cavity 23 is constructed in the heat dissipation cylinder 501, and the annular cavity 23 and the second blade 7 are at the same height. The vibration sensor 24, specifically a piezoelectric vibration sensor 24, is installed in the annular cavity 23 and is electrically connected with the relay 11. The vibration sensor 24 can control the power-on and power-off of the relay 11. The probes 25 are annularly distributed outside the vibration sensor 24.

[0085] The first blade 6 will vibrate when rotating, but it is mainly at a fixed frequency, and the amplitude is relatively stable. When the second blade 7 is offset, the first magnetic ring 14 and the second magnetic ring 15 collide with the two annular buffer pads 1604, which is a transient impact.

[0086] Need to be specified is, because the ring-shaped buffer pad 1604 is adopted to buffer the collision, the vibration generated by the collision is also reduced, the application expands the vibration amplitude by utilizing the resonance effect of the annular cavity 23, and meanwhile, the resonance amplification effect of the probe 25 is matched, so that the detection effect of the vibration sensor 24 is further improved, so that the vibration force generated by the collision can be detected, and the vibration and collision of the first blade 6 are distinguished, when the collision is detected, the relay 11 can be controlled to be short-circuited and lose power for a short time, at this time, the ring-shaped motor 9 stops driving the first blade 6 to rotate, and the ring plate 8 restores to the static state, so that the second blade 7 which is slightly inclined can be restored to the original position by traction of the magnetic force.

[0087] Further, a plurality of sensors are arranged on the circuit board. Good temperature detection effect can be achieved, thereby providing a basis and guarantee for subsequent accurate temperature control.

[0088] As Figure 11 shown, the application also relates to an intelligent heat dissipation control method for an explosion-proof lamp, comprising the following steps:

[0089] S101, acquiring real-time temperature distribution data of an LED light source through a temperature sensor array distributed on a surface of a circuit board;

[0090] S102, dynamically adjusting a rotating speed of a first heat dissipation blade according to a highest temperature value detected, so that the rotating speed increases in a segmented linear manner with the increase of the temperature;

[0091] S103, monitoring a suspension gap of a second heat dissipation blade through a magnetic induction device, and maintaining a preset suspension gap by using an optimal control algorithm;

[0092] S104, when a high-frequency vibration feature is detected, performing a multi-stage safety response control.

[0093] According to the embodiment of the application, preferably, the acquiring of the real-time temperature distribution data of the LED light source through the temperature sensor array distributed on the surface of the circuit board comprises:

[0094] 16 temperature measuring points are arranged equidistantly on the surface of the circuit board, a three-dimensional temperature field is reconstructed through a machine learning model, and when a temperature difference between adjacent temperature measuring points exceeds a set threshold value, it is determined that there is a local overheating area.

[0095] According to the embodiment of the application, preferably, the dynamically adjusting of the rotating speed of the first heat dissipation blade according to the highest temperature value detected, so that the rotating speed increases in a segmented linear manner with the increase of the temperature, comprises:

[0096] when the highest temperature is in a first temperature interval, the rotating speed is increased at a fixed slope;

[0097] when the highest temperature enters a second temperature interval, the slope of the rotating speed increase is increased by 30%-50%;

[0098] When the speed continues to fluctuate beyond the allowable range, the robust control mode is automatically switched.

[0099] According to the embodiment of the present application, preferably, the magnetic induction device is used to monitor the suspension gap of the second heat dissipation fin, and an optimal control algorithm is used to maintain the preset suspension gap, which comprises:

[0100] The gravity deviation compensation amount is calculated according to the inclination angle of the lamp, and the control current of the magnetic suspension system is dynamically adjusted;

[0101] When the environmental wind speed exceeds the preset value, the adaptive damping device is activated to suppress the blade vibration.

[0102] According to the embodiment of the present application, preferably, when the high-frequency vibration feature is detected, a multi-stage safety response control is performed, which comprises:

[0103] The first stage: reducing the running power of the heat dissipation system within sub-second time;

[0104] The second stage: injecting a reverse suppression current when the vibration energy cumulative value exceeds the safety threshold;

[0105] The third stage: switching to a backup power supply and starting a self-cleaning mechanism when the abnormality persists.

[0106] According to the embodiment of the present application, preferably, the backup power supply is switched and the self-cleaning mechanism is started when the abnormality persists, which comprises:

[0107] High-frequency mechanical vibration waves are generated in the heat dissipation channel, and the frequency is automatically optimized within a preset range;

[0108] The amplitude is adaptively adjusted according to the thickness of the carbon deposit, and the maximum acceleration does not exceed the material tolerance limit.

[0109] According to the embodiment of the present application, preferably, it further comprises an arc suppression step:

[0110] The high-frequency noise component of the relay current is monitored in real time, and when the arc characteristic signal is detected, the triple protection actions of current interruption, airflow acceleration and arc extinguishing electric field generation are synchronously performed.

[0111] According to the embodiment of the present application, preferably, the method for generating the arc extinguishing electric field comprises:

[0112] A gradient conductive plating layer is arranged on the inner wall of the heat dissipation pipeline, and an incremental surface potential is formed along the airflow direction, so that the arc restrike voltage is raised to above the preset safety value.

[0113] According to the embodiment of the present application, preferably, it further comprises an energy efficiency optimization step:

[0114] An optimization objective function of light efficiency and energy consumption is established, and the optimal light source power and heat dissipation system power ratio is dynamically solved by intelligent algorithm under the premise of ensuring the safety of junction temperature.

[0115] According to the embodiment of the present application, preferably, the optimization process introduces digital twin technology: a virtual thermodynamic model of the lamp is constructed, real-time operation data is used to predict thermal load changes, and the constraint condition weight of the optimization algorithm is dynamically adjusted to realize predictive control.

[0116] Specifically, multi-modal temperature sensing: 16 micro-thermocouple arrays are arranged at equal intervals on the surface of the circuit board to obtain junction temperature data {T1-T16} of the LED light source at a sampling frequency of 100 Hz, a three-dimensional temperature field is reconstructed through a convolutional neural network, and the maximum temperature gradient▽T_max is calculated;

[0117] Dynamic heat dissipation adjustment: when▽T_max>5℃ / mm, start the double cascade heat dissipation mechanism:

[0118] A) First stage adjustment: according to T_max=MAX(T1-T16), adjust the first blade 6 speed according to the formula N1=800+15*(T_max-60) rpm; wherein, 60≤T_max≤100℃;

[0119] B) Second stage adjustment: real-time monitoring of the second blade suspension gap δ through a magnetic flux sensor, adjusting the ring plate 8 speed N2 through an LQR controller to make δ=0.5±0.05mm;

[0120] Abnormal vibration processing: when the energy ratio of the vibration frequency spectrum in the 5-8kHz interval is >30%, activate the third level safety protocol.

[0121] Further, the first stage adjustment further includes: fuzzy PID parameter dynamic optimization strategy:

[0122] When dT_max / dt>2℃ / s, update the proportional coefficient according to ΔKp=0.4Kp_initial·(dT_max / dt);

[0123] The integral time Ti is adaptively adjusted according to the temperature fluctuation variance σ²: Ti_new=Ti_initial·exp(-0.05σ²);

[0124] When N1 fluctuates more than ±10% of the rated value for 5 seconds continuously, switch to the sliding mode variable structure control mode.

[0125] Further, the third level safety protocol includes:

[0126] Level 1: execute {N1←800rpm, N2←1200rpm} within 0.5 seconds, and start the PTC heater in the pipe body 503 to increase the air flow speed to 20m / s;

[0127] Level 2: When the vibration energy integral E > 50 m² / s³, inject a reverse damping current I_damp = 0.15 (E-50);

[0128] Level 3: If E exceeds the threshold for 10 seconds, switch to backup power and activate the piezoelectric actuator of the copper sheet 13 to generate a 10 kHz standing wave to remove carbon deposits.

[0129] Further, the driving method of the piezoelectric actuator in Level 3 is:

[0130] Phase difference control: The phase difference of adjacent copper sheets 13 is set to 90° to form a traveling wave vibration mode;

[0131] Frequency scanning: Scan in the range of 9.5-10.5 kHz with a step of 50 Hz to find the maximum amplitude resonance point;

[0132] Amplitude limitation: Control the surface vibration acceleration ≤20g to prevent structural fatigue damage.

[0133] Further, it also includes an arc intelligent suppression method: Real-time monitoring of the high-frequency noise component of the relay current, when the energy above 3 MHz exceeds the baseline value of 20 dB,

[0134] a) Trigger the IGBT chopper circuit within 0.2 ms to limit the arc current to below 5A;

[0135] b) Synchronously start the Tesla valve structure in the tube body 503 to make the local airflow speed reach 25 m / s;

[0136] c) Through the field emission effect of the gradientized DLC coating on the surface of the copper sheet 13, the arc reignition voltage is raised to 3kV.

[0137] Further, the gradientization of the DLC coating includes:

[0138] The coating thickness increases linearly from 50 nm to 100 nm along the airflow direction;

[0139] The surface roughness Ra decreases from 0.8 μm to 0.2 μm;

[0140] The Fermi level gradually changes from 4.8 eV to 5.2 eV, forming an internal potential gradient.

[0141] Further, it also includes: Introducing digital twin technology, including:

[0142] Building a three-dimensional thermodynamic model of the lamp in the cloud, and real-time receiving of edge-end {temperature, vibration, current} data;

[0143] Predicting the change in thermal load ΔQ in the next 5 minutes through an LSTM network;

[0144] Dynamic adjustment of optimization function weight:

[0145] When AQ>10%, temperature constraint weight is increased by 50%;

[0146] When AQ<-5%, energy efficiency optimization weight is increased by 30%.

[0147] The preferred embodiments of the present application are described in detail in combination with the drawings, but the present application is not limited to the specific details in the above-described embodiments, and various equivalent transformations can be made to the technical solutions of the present application within the technical concept of the present application, and these equivalent transformations all belong to the protection scope of the present application.

Claims

1. A high-efficiency heat dissipation structure for an explosion-proof lamp, characterized by comprising: The application relates to a shell (1), a light-transmitting plate (2) arranged on the bottom of the shell (1) along a first direction, a circuit board (3) arranged in the shell (1) along the first direction and located on the side close to the light-transmitting plate (2), a plurality of light sources (4) distributed on the circuit board (3), a first vane (6) rotatably arranged in the shell (1) and used for driving gas to flow in the shell (1) in a preset direction, a second vane (7) suspended outside the shell (1) by magnetic force, a heat-dissipating section (5) arranged on the shell (1) and located on the output direction of the second vane (7), and a ring plate (8) rotatably arranged in the shell (1) and magnetically connected with the second vane (7). The first vane (6) and the second vane (7) are arranged at different preset positions in the shell (1) respectively, so as to direct and circulate heat dissipation of the heat-dissipating section (5). The heat-dissipating section (5) comprises a heat-dissipating cylinder (501) vertically connected with the top of the shell (1), a plurality of heat-dissipating fins (502) annularly arranged on the outer surface of the heat-dissipating cylinder (501), a spiral vane (10) arranged on the inner wall of the heat-dissipating cylinder (501), a pipe body (503) connected with the spiral vane (10), and a ring plate (504) for mounting the circuit board (3) connected with the bottom of the pipe body (503), wherein the outer side and the inner side of the first vane (6) are rotatably connected with the heat-dissipating cylinder (501) and the pipe body (503) respectively, and an annular motor (9) is arranged on the outer side of the pipe body (503) and connected with the first vane (6). The second vane (7) is made of graphene and coated with a metal film on the outer surface. The inner side and the outer side of the second vane (7) are connected with a first magnetic ring (14) and a second magnetic ring (15) respectively, a mounting frame (16) is arranged on the outer side of the heat-dissipating cylinder (501), a first annular magnet (17) and a second annular magnet (18) are arranged on the mounting frame (16) and magnetically repel the bottom sides of the first magnetic ring (14) and the second magnetic ring (15) respectively, and a plurality of connecting blocks (19) are annularly arranged on the bottom of the mounting frame (16) and connected with the top of the shell (1). A plurality of connecting columns (20) are annularly arranged on the bottom of the second vane (7), a third magnetic ring (21) is connected with the bottom of the connecting column (20), a suction ring (22) is arranged on the top of the ring plate (8), and the third magnetic ring (21) is magnetically connected with the suction ring (22). A relay (11) is arranged in the pipe body (503), the annular motor (9) and the circuit board (3) are electrically connected with the relay (11), an annular frame (12) is connected with the pipe body (503), a plurality of copper sheets (13) are arranged on the annular frame (12) in parallel at intervals, and the relay (11) is fixed on the top of the copper sheets (13). The suction ring (22) is formed by a plurality of magnetic stone rings. ​ ​ ​ ​ ​ ​ 2. The high-efficiency heat dissipation structure for an explosion-proof lamp according to claim 1, characterized in that, ​ 3. The high-efficiency heat dissipation structure for an explosion-proof lamp according to claim 1, characterized in that, ​ At least some of the magnets repel the third magnetic ring (21) and the number of the magnets is less than that of the magnets attracting the third magnetic ring (21).

4. The high-efficiency heat dissipation structure for an explosion-proof lamp according to claim 3, characterized in that, The mounting frame (16) comprises two concentric annular plates (1601), a first annular magnet (17) and a second annular magnet (18) are arranged on the two annular plates (1601) respectively, a first cylinder (1602) is connected to each of the annular plates (1601) and is located inside the first magnetic ring (14) and outside the second magnetic ring (15) respectively, the two first cylinders (1602) are connected by a connecting plate (1605), the first cylinder (1602) is rotatably connected to a second cylinder (1603) by a bearing, and an annular buffer pad (1604) is arranged on the second cylinder (1603).

5. The high-efficiency heat dissipation structure for an explosion-proof lamp according to claim 4, characterized in that, The annular plate (8) is connected to the outside of the first blade (6).

6. The high-efficiency heat dissipation structure for an explosion-proof lamp according to claim 5, characterized in that, An annular cavity (23) is arranged in the heat dissipation cylinder (501), a vibration sensor (24) is arranged in the annular cavity (23), the vibration sensor (24) is electrically connected to a relay (11), and probes (25) are arranged on the outside of the vibration sensor (24).

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