A power distribution cabinet with early warning function

Abstract

The present invention relates to the technical field of power distribution devices, and specifically discloses an electric power distribution cabinet with an early warning function, wherein an air guide channel is arranged on the top of the cabinet, an air inlet pipe and an air outlet pipe are arranged in the cabinet at intervals and are both connected to the air guide channel, an air inlet pipe is provided with an exhaust fan and a dehumidifier containing hygroscopic particles, an air outlet pipe is provided with an exhaust fan, a rainwater cover is arranged above the cabinet and is elastically slidably connected to the cabinet along the vertical direction, the rainwater cover has a rainwater cavity, an inlet pipe section of a cooling pipe is connected to the rainwater cavity, a middle pipe section is turned into the cabinet, and an outlet pipe section passes through the cabinet, two side baffles are located on both sides of the inlet pipe and the outlet pipe and are both slidably inserted in the air guide channel, and the side baffles are connected to the rainwater cover. The electric power distribution cabinet with an early warning function of the present invention not only blocks the outside air from entering the cabinet, reduces the consumption of hygroscopic particles, but also uses rainwater to maintain the heat dissipation of the cabinet through the combined use of the rainwater cover, the cooling pipe and the side baffles.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution devices, and in particular to a power distribution cabinet with an early warning function. Background Art

[0002] A distribution cabinet refers to a complete set of distribution equipment assembled from primary and secondary equipment according to a certain electrical circuit scheme. It is mainly used to control or protect circuits or equipment. Dehumidification of distribution cabinets is an important measure to ensure the normal operation of electrical equipment and extend the life of equipment. Common dehumidification methods for distribution cabinets include condensation, moisture absorption, heating, etc. Among them, the moisture absorption method uses moisture absorbing materials to absorb moisture in the air. This method is simple and can work continuously, but the moisture absorbing materials need to be replaced regularly.

[0003] The Chinese patent document with the authorization announcement number CN117878727B discloses a dehumidification device for a power distribution cabinet and a power distribution cabinet, including a cabinet body and a working box installed on the top of the cabinet body, the two side walls of the working box are embedded with filter screens for filtering the outside air, the working box is equipped with a positive blade fan and a reverse blade fan spaced apart on the left and right, an inlet cylinder located directly below the positive blade fan and an exhaust cylinder located directly below the reverse blade fan are fixed in the cabinet body, and the bottom of the inlet cylinder is connected to a dehumidification box containing a dehumidification ball. When the power distribution cabinet dissipates heat, the positive blade fan draws air into the cabinet body, and the reverse blade fan draws air out of the cabinet body, so that the outside air will pass through the inlet cylinder, the dehumidification box, the inner space of the cabinet body, and the exhaust cylinder in sequence, thereby taking out the heat in the cabinet body and accelerating the heat dissipation of the power distribution cabinet. When passing through the dehumidification box, the dehumidification ball absorbs moisture and dehumidifies the air, thereby maintaining the dryness of the internal environment of the power distribution cabinet and preventing moisture from interfering with the operation of electrical equipment. However, in rainy weather, the outside air contains more moisture, and the dehumidification ball is consumed faster when removing water, thereby accelerating the failure of the dehumidification ball and reducing the service life of the dehumidification ball. At the same time, this situation also accelerates the replacement of the dehumidification ball, which is time-consuming and labor-intensive. In addition, when the rain is heavy and the water content in the air is high, the dehumidification ball cannot completely prevent moisture from invading the distribution cabinet, thereby affecting electrical equipment. Summary of the invention

[0004] The present invention provides an electric power distribution cabinet with an early warning function, aiming to solve the problems in the related art that dehumidification balls consume water faster in rainy weather and moisture easily invades the distribution cabinet and affects electrical equipment.

[0005] The electric power distribution cabinet with early warning function of the present invention comprises a cabinet body, an air guide mechanism, a water cooling mechanism and a sealing mechanism, the air guide mechanism comprises an air guide channel, an air inlet pipe and an air outlet pipe, the air guide channel is arranged on the top of the cabinet body, the air inlet pipe and the air outlet pipe are arranged in the cabinet body at intervals and are both connected with the air guide channel, the air inlet pipe is provided with an exhaust fan for extracting air into the cabinet body and a dehumidifier containing moisture-absorbing particles, the air outlet pipe is provided with an exhaust fan for exhausting air outside the cabinet body, the water cooling mechanism comprises a rainwater cover and a cooling pipe, and the rainwater cover cover is provided at The top of the cabinet is elastically and vertically connected to the cabinet, the rainwater cover has a rainwater cavity for receiving and storing rainwater, the inlet pipe section of the cooling pipe is connected to the rainwater cavity, the middle pipe section turns into the cabinet and is used to cool the air in the cabinet, and the outlet pipe section passes through the cabinet; the sealing mechanism includes two side blocks located on both sides of the air inlet pipe and the air outlet pipe and both are slidably inserted in the air guide channel, the side blocks are connected to the rainwater cover so that when the rainwater cover moves down, the side blocks can close the air guide channel.

[0006] The effect is that: the present invention realizes the collection of rainwater when it rains by setting the rain cover. Under the weight of the rainwater, the rain cover can move downward, driving the side blocking parts to close the air guide channel, thereby blocking the outside air from flowing into the cabinet, which not only avoids the consumption of the moisture in the outside air on the hygroscopic particles of the dehumidifier, delays the failure of the hygroscopic particles, avoids the frequent replacement of the hygroscopic particles, saves time and manpower; and avoids the outside air from bringing moisture into the cabinet and causing interference to the electrical equipment. At the same time, under the action of the suction fan and the exhaust fan, an internal air circulation passage is formed between the cabinet and the air guide channel, and the rainwater in the rain cover flows into the cooling pipe, and the air flowing in the cabinet is cooled in the middle pipe section to ensure continuous heat dissipation.

[0007] Preferably, the bottom wall of the rainwater chamber is provided with an opening, and a plugging piece for sealing the opening is elastically and slidably connected in the rainwater chamber; the inlet pipe section of the cooling pipe is retractable and includes an outer tube body and an inner tube body, the outer tube body is fixedly arranged below the rainwater cover and connected to the opening, the inner tube body is passed through the outer tube body and is provided with a thrust piece facing the plugging piece, and when the rainwater cover moves downward, the plugging piece gradually approaches the thrust piece until it is lifted up by the thrust piece, thereby opening the opening.

[0008] The effect is that the plugging piece of the present invention seals the opening, so that rainwater gathers in the rainwater cavity. When it accumulates to a certain amount, the plugging piece opens the opening, thereby realizing large-scale and continuous drainage of rainwater, thereby enhancing the cooling effect of rainwater in the middle pipe section of the cooling pipe.

[0009] Preferably, the middle pipe section of the cooling pipe forms a coil structure.

[0010] The effect is that the coil structure improves the heat exchange efficiency between the middle pipe section of the cooling pipe and the air in the cabinet, thereby accelerating heat dissipation.

[0011] Preferably, the sealing mechanism also includes an intermediate block located between the air inlet pipe and the air outlet pipe and slidably inserted in the air guide channel, the intermediate block is connected to the rain cover, and under normal conditions, the intermediate block closes the air guide channel, and when the rain cover moves downward, the intermediate block opens the air guide channel.

[0012] The effect is that when the distribution cabinet uses air flow to dissipate heat, the middle baffle can divide the air guide channel into two, so that the exhaust airflow of the exhaust fan and the exhaust airflow of the exhaust fan do not interfere with each other, avoiding the hot air discharged from the cabinet from being sucked into the cabinet again, affecting the heat dissipation effect.

[0013] Preferably, the power distribution cabinet with early warning function also includes a distribution mechanism, which includes a discharge bin and a receiving bin, the dehumidifier is elastically slidably connected to the air inlet pipe, the discharge bin is located above the dehumidifier and is connected to the air inlet pipe through a feed port, and the feed port is used to introduce the hygroscopic particles in the discharge bin into the air inlet pipe, and then into the dehumidifier; the upper end of the dehumidifier is connected to a closure member, and when the hygroscopic particles accumulate and gain weight in the dehumidifier, the dehumidifier can be pressed down so that the closure member closes the feed port; the receiving bin is located below the dehumidifier and is connected to the air inlet pipe through a discharge port, and when the hygroscopic particles in the dehumidifier absorb moisture and become heavier, the dehumidifier can continue to be pressed down so that it moves to the discharge port, and the discharge port introduces the hygroscopic particles in the dehumidifier into the receiving bin.

[0014] The effect is that when the waste moisture-absorbing particles on the dehumidifier are emptied, the elastic force acting on the dehumidifier causes the dehumidifier to return to its original position, and the dehumidifier continues to receive new moisture-absorbing particles in the discharge bin. Thus, the automatic material replacement of the dehumidifier is realized, manual operation is avoided, and manpower is saved.

[0015] Preferably, the cloth mechanism also includes a wedge-shaped piece that is slidably embedded in the air inlet pipe and elastically connected to the air inlet pipe. When the dehumidifier moves to the discharge port, the wedge-shaped piece pops out and locks on the top of the closure piece. After the hygroscopic particles in the dehumidifier are emptied, the wedge-shaped piece can be pushed upward under the action of the elastic force between the dehumidifier and the air inlet pipe.

[0016] Preferably, the dehumidifier comprises an annular body and a conical body separated from each other vertically, the annular body and the conical body are connected via a connecting piece, and a material passing gap for passing hygroscopic particles is formed therebetween.

[0017] Preferably, the conical body is evenly distributed with a plurality of ventilation holes parallel to the axial direction of the air inlet pipe.

[0018] Preferably, a temperature sensor for measuring the ambient temperature is provided in the cabinet, a telescopic device electrically connected to the temperature sensor is provided on the top wall of the cabinet, an output end of the telescopic device is provided with a pushing piece extending into the rainwater chamber, and the pushing piece is used to push the blocking piece upward when the telescopic device is extended, so that the blocking piece opens the opening.

[0019] Preferably, the middle part of the top wall of the rainwater cover is raised to form a slope structure, and the top wall of the rainwater cover is provided with a plurality of water filtering holes which are connected with the rainwater cavity and can filter impurities in the rainwater.

[0020] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0021] The present invention realizes the weight increase of the rain cover itself through the rain cover's function of collecting rainwater, thereby enabling the rain cover to move downward, thereby driving the side blocking member to close the air guide channel, blocking the flow of outside air into the cabinet, which not only avoids the consumption of moisture in the outside air on the hygroscopic particles of the dehumidifier, delays the failure of the hygroscopic particles, reduces the replacement frequency of the hygroscopic particles, saves time and manpower; and avoids the outside air from bringing moisture into the cabinet and intruding on electrical equipment. At the same time, the operation of the suction fan and the exhaust fan forms an internal air circulation passage between the cabinet and the air guide channel, and the rainwater in the rain cover can continue to flow into the middle pipe section of the cooling pipe to cool the air flowing in the cabinet, thereby ensuring continuous heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the appearance of the power distribution cabinet with early warning function of the present invention.

[0023] Figure 2 It is a cross-sectional schematic diagram of the power distribution cabinet with early warning function of the present invention.

[0024] Figure 3 The present invention Figure 2 A magnified schematic diagram of center A.

[0025] Figure 4 It is a three-dimensional schematic diagram of the power distribution cabinet with early warning function of the present invention.

[0026] Figure 5 It is a schematic diagram of the appearance of the cooling pipe part of the present invention.

[0027] Figure 6 It is a schematic structural diagram of the thrust piece to blocking piece portion of the present invention.

[0028] Figure 7It is a three-dimensional schematic diagram of the rain cover to the sealing mechanism part of the present invention.

[0029] Figure 8 It is a schematic structural diagram of the dehumidifier of the present invention when it moves to the discharge port.

[0030] Fig. 9 It is a schematic diagram of the appearance of the dehumidifier part of the present invention.

[0031] Fig.10 It is a schematic diagram of the appearance of the portion from the discharge bin to the receiving bin of the present invention.

[0032] Reference numerals:

[0033] 1. Cabinet; 11. Assembly rack;

[0034] 21. air guide channel; 211. filter screen; 22. air inlet pipe; 221. exhaust fan; 23. air outlet pipe; 231. exhaust fan;

[0035] 31. Rainwater cover; 311. Spring sleeve rod; 312. Rainwater chamber; 313. Water filter hole; 314. Blocking piece; 315. Spring telescopic rod; 32. Cooling pipe; 321. Outer pipe body; 322. Inner pipe body; 322a. Thrust piece; 323. Intermediate pipe section; 324. Outlet pipe section;

[0036] 41, middle stopper; 411, closed plate; 412, notch; 42, side stopper;

[0037] 5. Dehumidifier; 51. Ring body; 52. Cone body; 53. Connector; 54. Feed gap; 55. Upper retaining ring; 56. Lower retaining ring; 57. Return spring;

[0038] 61. material discharge bin; 611. material feed port; 62. material collection bin; 621. material discharge port; 63. buckle cover; 64. wedge-shaped piece;

[0039] 7. Telescopic device; 71. Push piece. DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0041] Combine the following Figures 1 to 10 The invention describes an electric power distribution cabinet with an early warning function.

[0042] like Figure 1 to Figure 2 As shown, the power distribution cabinet with early warning function of the present invention comprises a cabinet body 1, an air guide mechanism, a water cooling mechanism, a sealing mechanism and a material distribution mechanism.

[0043] An assembly rack 11 is installed in the cabinet 1 , and the assembly rack 11 is used to install and fix the electrical equipment so that the position of the electrical equipment in the cabinet 1 is stable and its normal operation is guaranteed.

[0044] The air guide mechanism includes an air guide channel 21, an air inlet pipe 22 and an air outlet pipe 23. The air guide channel 21 extends in the left-right direction and is arranged on the top of the cabinet 1. The notches at both ends of the air guide channel 21 are provided with filter screens 211 for filtering impurities in the air. The air inlet pipe 22 and the air outlet pipe 23 are arranged in the cabinet 1 at intervals in the left-right direction. The tops of both are connected with the air guide channel 21. The air inlet pipe 22 is provided with an exhaust fan 221 for extracting air into the cabinet 1 and a dehumidifier 5 containing moisture-absorbing particles. The air outlet pipe 23 is provided with an exhaust fan 231 for exhausting air to the outside of the cabinet 1. It should be noted that the fan shafts of the exhaust fan 221 and the exhaust fan 231 can extend into the air guide channel 21 and are rotatably connected to the wall of the air guide channel 21. The exhaust fan 221 and the exhaust fan 231 are both electrically controlled to open and close and operate. This is a conventional technology in the field and will not be repeated here.

[0045] When the suction fan 221 and the exhaust fan 231 are started, the suction fan 221 draws outside air into the air inlet pipe 22 through one end of the air guide channel 21. When passing through the filter 211, impurities in the air are filtered to prevent them from entering the air inlet pipe 22 with the air, thereby adversely affecting the electrical equipment in the cabinet 1. The air then flows through the dehumidifier 5, and the hygroscopic particles in the dehumidifier 5 dehumidify the air, remove moisture from the air, and prevent moisture from infecting the electrical equipment. Finally, the air is discharged by the exhaust fan 231 through the air outlet pipe 23, and then discharged to the outside through the other end of the air guide channel 21, thereby achieving continuous flow of air. During the flow, the air continuously takes out the heat in the cabinet 1, thereby achieving heat dissipation of the distribution cabinet.

[0046] Continue to refer Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6The water cooling mechanism includes a rainwater cover 31 and a cooling pipe 32. The rainwater cover 31 is covered on the top of the cabinet 1. The bottom end of the rainwater cover 31 and the top wall of the cabinet 1 are connected by a vertical spring sleeve rod 311, thereby realizing the elastic sliding of the rainwater cover 31 relative to the cabinet 1 in the vertical direction. The inside of the rainwater cover 31 has a rainwater cavity 312 for receiving and storing rainwater. The middle part of the top wall of the rainwater cover 31 is raised to form a slope structure, and the top wall of the rainwater cover 31 is evenly provided with a plurality of water filtering holes 313 connected to the rainwater cavity 312. When it rains, rainwater enters the rainwater cavity 312 through the water filtering holes 313, and is deposited and gathered in the rainwater cavity 312. The impurities in the rainwater are filtered out by the water filtering holes 313 and flow to both sides along the slope structure of the rainwater cover 31 to be discharged, so as to avoid the accumulation of these impurities on the rainwater cover 31 and increase the cleaning burden. The bottom wall of the rainwater chamber 312 is provided with an opening, and a blocking member 314 is provided in the rainwater chamber 312. The blocking member 314 is connected to the bottom wall of the rainwater chamber 312 through a vertical spring telescopic rod 315, so as to realize elastic sliding of the blocking member 314 in the vertical direction. Under normal conditions, the blocking member 314 is blocked in the opening under the elastic tension of the spring telescopic rod 315. In this embodiment, the shape of the blocking member 314 can be block-shaped, cylindrical, etc., which is not limited here.

[0047] The inlet pipe section of the cooling pipe 32 is retractable and includes an outer pipe body 321 and an inner pipe body 322. The outer pipe body 321 is located directly below the opening and the top end is fixedly connected to the rain cover 31. It can be understood that the outer pipe body 321 is connected to the opening, and the inner pipe body 322 is inserted into the outer pipe body 321 and is provided with a thrust piece 322a facing the blocking piece 314. In this embodiment, the inner pipe body 322 is integrally formed with the remaining pipe section of the cooling pipe 32, and the thrust piece 322a can be along the inner pipe body 322. There are multiple fork rods evenly distributed in the circumference, and the fork rods are integrally formed with the tube wall of the inner tube body 322. When rainwater continuously gathers in the rainwater cavity 312, the rainwater cover 31 will gradually move downward due to the gravity of the rainwater, and the blocking member 314 will move downward with the rainwater cover 31 and slowly approach the thrust member 322a. When the accumulated amount of rainwater reaches a certain level, the blocking member 314 will touch the thrust member 322a and be lifted up by the thrust member 322a, thereby opening the opening, and the rainwater in the rainwater cavity 312 begins to flow into the inlet pipe section of the cooling pipe 32. The arrangement of the outer tube body 321 and the inner tube body 322 ensures that when the rainwater cover 31 moves downward, although the outer tube body 321 moves downward relative to the inner tube body 322, the two still maintain a state of communication, ensuring the diversion effect of rainwater. The middle pipe section 323 of the cooling pipe 32 turns into the cabinet 1 and is used to cool the air in the cabinet 1. In this embodiment, a small portion of the middle pipe section 323 of the cooling pipe 32 turns into the air outlet pipe 23, and a large portion is directly below the air outlet pipe 23, and the middle pipe section 323 of the cooling pipe 32 forms a coil structure, which improves the heat exchange efficiency between the middle pipe section 323 of the cooling pipe 32 and the air in the cabinet 1, and accelerates the heat dissipation of the cabinet 1. At this time, the rainwater flowing into the cooling pipe 32 acts as a cold medium for heat exchange. The outlet pipe section 324 of the cooling pipe 32 passes through the cabinet 1 so that the rainwater after heat exchange can be led out of the cabinet 1 for external discharge.

[0048] Continue to refer Figure 2 and Figure 7The sealing mechanism includes a middle block 41 and two side blocks 42. The middle block 41 is located between the air inlet pipe 22 and the air outlet pipe 23 and is inserted into the air guide channel 21 by sliding vertically. The middle block 41 includes an integrally formed connecting plate and a closing plate 411. The top of the connecting plate is fixedly connected to the rain cover 31. A notch 412 is formed at the part of the connecting plate close to the closing plate 411. Under normal conditions, the closing plate 411 closes the air guide channel 21. In this way, when the power distribution cabinet uses air flow to dissipate heat, the middle block 41 can divide the air guide channel 21 into two, so that the exhaust airflow of the exhaust fan 221 and the exhaust airflow of the exhaust fan 231 do not interfere with each other, and prevent the hot air discharged from the cabinet 1 from being sucked into the cabinet 1 again, affecting the heat dissipation effect. When the rain cover 31 moves downward, the closed plate 411 gradually moves downward, and the above-mentioned notch 412 enters the air guide channel 21, so that the air guide channel 21 is opened and unobstructed, so that the air inlet pipe 22 and the air outlet pipe 23 form a connecting passage through the air guide channel 21. In order to avoid the downward movement of the closed plate 411, a slot is opened on the wall of the air guide channel 21 and is located directly below the closed plate 411. In order to match the vertical dimensions of the slot and the plate, the slot can also extend downward to the top wall of the cabinet 1. In this way, the closed plate 411 can extend into the slot when it moves downward, and the slot provides an avoidance space for the closed plate 411.

[0049] The two side baffles 42 are located on both sides of the air inlet pipe 22 and the air outlet pipe 23 and are both vertically slidably inserted into the air guide channel 21. The side baffles 42 are connected to the rain cover 31. It can be understood that the structures of the side baffles 42 and the middle baffle 41 are substantially the same, and will not be described in detail here. Under normal circumstances, the side baffles 42 keep the air guide channel 21 open, so that the inflow and outflow of the outside air in the cabinet 1 is not affected, ensuring smooth air flow. When the rain cover 31 moves downward, the side baffles 42 move downward accordingly and gradually close the air guide channel 21, so that when it rains, the two side baffles 42 can prevent outside air from entering the air inlet pipe 22 and the air outlet pipe 23 from the two ends of the air guide channel 21, and then entering the cabinet 1, thereby preventing outside air from bringing moisture into the cabinet 1 and causing interference to electrical equipment. This also reduces the consumption of moisture in the air on the hygroscopic particles in the dehumidifier 5, delays the failure of the hygroscopic particles, increases the service life of the hygroscopic particles, avoids frequent replacement of the hygroscopic particles, and saves time and manpower. At the same time, the above-mentioned intermediate block 41 opens the air guide channel 21, and the air inlet pipe 22, the space inside the cabinet 1, the air outlet pipe 23, and the middle section of the air guide channel 21 together form a circulating flow passage. Under the action of the suction fan 221 and the exhaust fan 231, the air in the cabinet 1 can circulate along this flow passage. When passing through the middle pipe section 323 of the cooling pipe 32, the flowing air exchanges heat with it, thereby realizing water cooling and ensuring the dissipation of heat in the cabinet 1.

[0050] As can be seen from the above, the present invention realizes air-cooling and heat dissipation of the cabinet 1 by letting outside air enter and exit the cabinet 1 under normal conditions. In rainy weather, the outside air contains more moisture and is not suitable for entering the cabinet 1, so the air inlet channel of the cabinet 1 is closed, that is, the two sides of the air guide channel 21 are closed, and the heat is dissipated by relying on the circulation of air in the cabinet 1 and the water cooling of rainwater to ensure the continuation of the heat dissipation process. In other words, the air-cooling and water-cooling of the cabinet 1 are automatically switched, which not only ensures the continuation of heat dissipation, but also avoids the consumption of hygroscopic particles.

[0051] Continue to refer Figure 2 , Figure 3 , Figure 8 , Fig. 9 and Fig.10 The dehumidifier 5 can slide up and down in the air inlet pipe 22. It includes an annular body 51 and a conical body 52 spaced apart from each other. The annular body 51 and the conical body 52 are connected by a connecting piece 53. The connecting piece 53 can be a connecting rod. The number of the connecting rods can be one, two, three, etc. This embodiment is not limited thereto. A material gap 54 for passing hygroscopic particles is formed between the annular body 51 and the conical body 52. ​​When the hygroscopic particles enter the dehumidifier 5, the conical body 52 carries the hygroscopic particles, and the annular body 51 blocks the hygroscopic particles. The conical body 52 is evenly distributed with a plurality of vents parallel to the axial direction of the air inlet pipe 22. The vents are used for the passage of flowing air in the air inlet pipe 22 to prevent the air from being blocked by the annular body 51. The upper end of the annular body 51 is connected to a closing piece, which may be an upper baffle ring 55, whose outer ring surface fits against the inner wall of the intake pipe 22, and an extrusion spring is connected between the upper baffle ring 55 and the intake pipe 22; the lower end of the conical body 52 is connected to a lower baffle ring 56, whose outer ring surface fits against the inner wall of the intake pipe 22, and a return spring 57 is connected between the lower baffle ring 56 and the intake pipe 22.

[0052] The material distribution mechanism includes a discharge bin 61 for storing the hygroscopic particles to be used and a receiving bin 62 for storing the used hygroscopic particles. The discharge bin 61 and the receiving bin 62 are respectively placed on the upper and lower sides of the dehumidifier 5. The discharge bin 61 and the receiving bin 62 are both annular and are mounted on the air inlet pipe 22. The bottom end of the discharge bin 61 is connected to the air inlet pipe 22 through the feed port 611, and the top end of the receiving bin 62 is connected to the air inlet pipe 22 through the discharge port 621. Under normal conditions, the downward elastic force of the extrusion spring and the upward elastic force of the return spring 57 can reach a force balance state. In this state, the dehumidifier 5 is at the feed port 611 position. The feed port 611 guides the hygroscopic particles in the discharge bin 61 into the air inlet pipe 22. The hygroscopic particles continue to flow into the dehumidifier 5 through the feed gap 54 under the action of gravity. As the hygroscopic particles continue to accumulate and increase in weight in the dehumidifier 5, the hygroscopic particles begin to gradually press down on the dehumidifier 5, and the dehumidifier 5 begins to move downward, and the upper baffle ring 55 moves downward accordingly and gradually closes the feed port 611, thereby blocking the flow of hygroscopic particles in the discharge bin 61 into the dehumidifier 5, and then the dehumidifier 5 stops moving downward and maintains the current state, which is the working state of the dehumidifier 5. It should be noted that when the dehumidifier 5 moves downward, although the lower baffle ring 56 also moves downward accordingly, it always maintains a closed state with respect to the discharge port 621, so that when the dehumidifier 5 is working and dehumidifying, the feed port 611 and the discharge port 621 are both closed, preventing air from entering the discharge bin 61 and the receiving bin 62 through the feed port 611 and the discharge port 621, and causing disturbance to the hygroscopic particles therein.

[0053] When the dehumidifier 5 is working, the hygroscopic particles will continue to absorb moisture and become heavier, so the weight on the dehumidifier 5 will continue to increase, and the dehumidifier 5 will be pressed down. When the dehumidifier 5 moves to the discharge port 621, the hygroscopic particles in the dehumidifier 5 enter the receiving bin 62 through the material gap 54 and the discharge port 621, so as to collect the waste particles after absorbing moisture. The conical design of the cone 52 in the dehumidifier 5 facilitates the sliding out of the hygroscopic particles, so that the hygroscopic particles can automatically flow into the receiving bin 62. When the hygroscopic particles in the dehumidifier 5 are emptied, the weight on the dehumidifier 5 is reduced. Under the action of the reset spring 57, the dehumidifier 5 returns to the position of the feed port 611 again, and receives new hygroscopic particles from the discharge bin 61. The subsequent process is the same as the above process. Thus, the dehumidifier 5 achieves the effect of automatic material replacement, avoids manual replacement of the hygroscopic particles in the dehumidifier 5, and saves manpower. It should be noted that both the discharge bin 61 and the receiving bin 62 are provided with a take-in and put-out opening for the operator to take in and put in the hygroscopic particles, and a buckle cover 63 is provided at the take-in and put-out opening to realize the opening and closing of the take-in and put-out opening.

[0054] When the dehumidifier 5 discharges the waste hygroscopic particles into the receiving bin 62, the weight on the dehumidifier 5 will gradually decrease, and under the action of the reset spring 57, the dehumidifier 5 will tend to move upward. In other words, the dehumidifier 5 may move upward away from the discharge port 621, which may result in that all the hygroscopic particles on the dehumidifier 5 cannot be discharged into the receiving bin 62. In order to overcome this phenomenon, the material distribution mechanism also includes a wedge 64 that is slidably embedded in the wall of the air inlet pipe 22 along the radial direction of the air inlet pipe 22. In this embodiment, the wedge 64 can be in the shape of a block, a strip, etc., and the wedge 64 is connected to the air inlet pipe 22 through a connecting spring. Under normal conditions, the wedge 64 is blocked by the upper retaining ring 55 and shrinks into the wall of the air inlet pipe 22. When the dehumidifier 5 moves down to the discharge port 621, the upper retaining ring 55 moves down to the bottom of the wedge 64, and the wedge 64 pops out and locks on the top of the upper retaining ring 55. When the moisture-absorbing particles in the dehumidifier 5 are discharged, although it can reduce the weight of the dehumidifier 5, with the cooperation of the return spring 57, the dehumidifier 5 has a tendency to move upward, but due to the resistance of the wedge 64, the dehumidifier 5 The dehumidifier 5 and the upper retaining ring 55 are blocked and cannot move upward, so their positions are limited, ensuring that all the hygroscopic particles on the dehumidifier 5 are discharged. When the dehumidifier 5 is completely emptied, the force of the reset spring 57 that causes the dehumidifier 5 to move upward reaches a limit. At this time, the upper retaining ring 55 will press the wedge 64 through the wedge surface of the wedge 64, causing the wedge 64 to retract, thereby forcing the wedge 64 to give way and pass over the wedge 64, thereby realizing the upward reset of the dehumidifier 5.

[0055] Continue to refer Figure 2 , Figure 4 , Figure 5 and Figure 6 When the rainy weather ends, that is, the rain stops, there is still a lot of rainwater in the rainwater cover 31, and the rainwater will flow out through the opening, thereby reducing the weight of the rainwater cover 31. Then the rainwater cover 31 moves upward under the action of the spring sleeve rod 311, so that the gravity on the rainwater cover 31 and the elastic force of the spring sleeve rod 311 reach a new equilibrium position. In the process of the rainwater cover 31 gradually moving upward, the opening will approach the blocking member 314 until it is blocked again by the blocking member 314. At this time, the remaining rainwater in the rainwater cover 31 cannot be discharged through the opening, but is retained in the rainwater cover 31, achieving a storage effect. This part of rainwater can be used for overheating and cooling in the cabinet 1. To this end, a temperature sensor for measuring the ambient temperature is provided in the cabinet 1, and a telescopic device 7 is provided on the top wall of the cabinet 1. The telescopic device 7 can be an electric telescopic rod, an electric push rod, a hydraulic rod, etc. The telescopic device 7 is electrically connected to the temperature sensor through a controller installed on the cabinet 1, and an output end of the telescopic device 7 is provided with a pushing piece 71 extending into the rainwater chamber 312. In this embodiment, the shape of the pushing piece 71 can be a rod, a strip, etc., and the blocking piece 314 has a protrusion located directly above the pushing piece 71.

[0056] When the environment inside the cabinet 1 is overheated, the cooling effect of the cabinet 1 by air cooling alone is poor. At this time, the temperature sensor can feed back the detected temperature data to the controller, and the controller analyzes and processes the temperature data and controls the extension of the telescopic device 7 accordingly. The telescopic device 7 drives the pushing member 71 to push the protrusion upward, thereby realizing the upward movement of the blocking member 314, thereby opening the opening. After that, the remaining rainwater in the above-mentioned rainwater cover 31 can enter the cooling pipe 32 through the opening, and the middle pipe section 323 of the cooling pipe 32 cools the inner space of the cabinet 1. Combined with the effect of air cooling, the cooling and heat dissipation effects of the cabinet 1 are improved.

[0057] It should be noted that an alarm may be provided on the cabinet 1, and the alarm is electrically connected to the controller. When the environment inside the cabinet 1 is overheated, the controller may synchronously transmit a signal to the alarm so that the alarm sounds an alarm to facilitate the operator to handle the situation.

[0058] refer to Figures 1 to 10 The working principle of the power distribution cabinet with early warning function of the present invention is:

[0059] 1. Air cooling and heat dissipation. When the weather is fine, the exhaust fan 221 and the exhaust fan 231 can be turned on. The outside air enters the cabinet 1 through the air inlet pipe 22 and is then discharged outside the cabinet 1 through the air outlet pipe 23, bringing out the heat in the cabinet 1 to achieve air cooling and heat dissipation. When the air passes through the dehumidifier 5, it is dehumidified by the hygroscopic particles in the dehumidifier 5 to avoid introducing moisture into the cabinet 1, thereby ensuring the dryness of the environment in the cabinet 1 and ensuring the normal operation of the electrical equipment.

[0060] Second, water cooling and heat dissipation. When it rains, rainwater enters the rainwater chamber 312 through the water filter hole 313, and is deposited and gathered in the rainwater chamber 312. With the accumulation of rainwater, the rainwater cover 31 moves downward, and the blocking member 314 is gradually pushed open by the thrust member 322a, and the rainwater in the rainwater chamber 312 flows into the middle pipe section 323 of the cooling pipe 32 through the opening. At the same time, the middle block 41 opens the middle area of ​​the air guide channel 21 to make it unobstructed, and the side block 42 closes the two side areas of the air guide channel 21 to prevent the entry of external air, thereby protecting the hygroscopic particles and preventing their rapid consumption. At the same time, it also blocks the moisture in the air from entering the cabinet 1, thereby protecting the electrical equipment. Under the action of the exhaust fan 221 and the exhaust fan 231, the air in the cabinet 1 forms a circulation flow, and when flowing, forms a heat exchange with the middle pipe section 323 of the cooling pipe 32, achieving the effect of water cooling and ensuring the heat dissipation of the cabinet 1.

[0061] Third, water cooling and air cooling heat dissipation, when the rainy weather ends, the rainwater flows out of the rainwater chamber 312 through the opening, and the rainwater cover 31 will continue to move upward under the action of the spring sleeve rod 311 until the opening and the blocking member 314 are re-matched. At this time, the remaining rainwater in the rainwater cover 31 is sealed in the rainwater cover 31 due to the closure of the opening, as a reserve cooling water source. When the environment inside the cabinet 1 is overheated, the temperature sensor can control the extension of the telescopic device 7, and the push member 71 pushes the blocking member 314 upward, and the remaining rainwater in the rainwater cover 31 can flow into the middle pipe section 323 of the cooling pipe 32 through the opening again, and the air cooling effect is used to dissipate the heat in the space inside the cabinet 1, thereby accelerating the cooling speed of the cabinet 1.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0063] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0064] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An electric power distribution cabinet with an early warning function, comprising a cabinet and an air guide mechanism, the air guide mechanism comprising an air guide channel, an air inlet pipe and an air outlet pipe, the air guide channel is arranged on the top of the cabinet, the air inlet pipe and the air outlet pipe are arranged in the cabinet at intervals and are both connected to the air guide channel, the air inlet pipe is provided with an exhaust fan for extracting air into the cabinet and a dehumidifier containing moisture-absorbing particles, the air outlet pipe is provided with an exhaust fan for exhausting air out of the cabinet, characterized in that: Also includes: The water cooling mechanism includes a rainwater cover and a cooling pipe. The rainwater cover is arranged above the cabinet and is elastically connected to the cabinet in a vertical sliding manner. The rainwater cover has a rainwater cavity for receiving and storing rainwater. The inlet pipe section of the cooling pipe is connected to the rainwater cavity. The middle pipe section is bent into the cabinet and used to cool the air in the cabinet. The outlet pipe section passes through the cabinet. The sealing mechanism includes two side blocks located on both sides of the air inlet pipe and the air outlet pipe and slidably inserted in the air guide channel, and the side blocks are connected to the rain cover so that when the rain cover moves down, the side blocks can close the air guide channel; The bottom wall of the rainwater cavity is provided with an opening, and a plugging piece for sealing the opening is elastically and slidably connected in the rainwater cavity; the inlet pipe section of the cooling pipe is retractable and includes an outer pipe body and an inner pipe body, the outer pipe body is fixedly arranged below the rainwater cover and is connected to the opening, the inner pipe body is penetrated into the outer pipe body and is provided with a thrust piece facing the plugging piece, when the rainwater cover moves downward, the plugging piece gradually approaches the thrust piece and is lifted up by the thrust piece, thereby opening the opening.

2. The power distribution cabinet with early warning function according to claim 1 is characterized in that: The middle pipe section of the cooling pipe forms a coil structure.

3. The power distribution cabinet with early warning function according to claim 1 is characterized in that: The sealing mechanism also includes an intermediate block located between the air inlet pipe and the air outlet pipe and slidably inserted in the air guide channel, the intermediate block is connected to the rain cover, under normal conditions, the intermediate block closes the air guide channel, and when the rain cover moves downward, the intermediate block opens the air guide channel.

4. The power distribution cabinet with early warning function according to claim 1 is characterized in that: It also includes a distribution mechanism, which includes a discharge bin and a receiving bin. The dehumidifier is elastically and slidably connected in the air inlet pipe. The discharge bin is above the dehumidifier and connected to the air inlet pipe through a feed port. The feed port is used to guide the hygroscopic particles in the discharge bin into the air inlet pipe to enter the dehumidifier. A closure is connected to the upper end of the dehumidifier. When the hygroscopic particles accumulate and increase in weight in the dehumidifier, the dehumidifier is pressed down so that the closure closes the feed port. The receiving bin is below the dehumidifier and connected to the air inlet pipe through a discharge port. When the hygroscopic particles in the dehumidifier absorb moisture and become heavier, the dehumidifier continues to be pressed down to move them to the discharge port. The discharge port guides the hygroscopic particles in the dehumidifier into the receiving bin.

5. The power distribution cabinet with early warning function according to claim 4 is characterized in that: The cloth mechanism also includes a wedge-shaped piece that is slidably embedded in the air inlet pipe and elastically connected to the air inlet pipe. When the dehumidifier moves to the discharge port, the wedge-shaped piece pops out and locks on the top of the closure piece. After the hygroscopic particles in the dehumidifier are emptied, the wedge-shaped piece can be pushed upward under the action of the elastic force between the dehumidifier and the air inlet pipe.

6. The power distribution cabinet with early warning function according to claim 4 is characterized in that: The dehumidifier comprises an annular body and a conical body which are separated from each other up and down. The annular body and the conical body are connected by a connecting piece, and a material passing gap for passing moisture absorbing particles is formed between the two.

7. The power distribution cabinet with early warning function according to claim 6 is characterized in that: The cone is evenly distributed with a plurality of ventilation holes which are parallel to the axial direction of the air inlet pipe.

8. The power distribution cabinet with early warning function according to claim 1 is characterized in that: A temperature sensor for measuring ambient temperature is provided in the cabinet body, a telescopic device electrically connected to the temperature sensor is provided on the top wall of the cabinet, a pushing piece extending into the rainwater chamber is provided at the output end of the telescopic device, and the pushing piece is used to push the blocking piece upward when the telescopic device is extended, so that the blocking piece opens the opening.

9. The power distribution cabinet with early warning function according to claim 1 is characterized in that: The middle part of the top wall of the rainwater cover is raised to form a slope structure, and the top wall of the rainwater cover is provided with a plurality of water filtering holes which are connected with the rainwater cavity and can filter impurities in the rainwater.

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