Novel power distribution cabinet

Abstract

The invention is suitable for the related technical field of power distribution cabinets, and provides a novel power distribution cabinet, which comprises a cabinet body, and is characterized in that the cabinet body is internally provided with an expansion cavity and a power distribution cavity for installing electrical components; the heat dissipation holes are formed in the rear side of the cabinet body and are communicated with the power distribution cavity; the sealable heat dissipation mechanism is located in the power distribution cavity and comprises a rotating ring, a supporting shaft, a heat dissipation disc and a rotating supporting assembly, the rotating ring is rotationally installed in the power distribution cavity through the rotating supporting assembly, and the heat dissipation disc is rotationally installed in a round hole of the rotating ring through the supporting shaft; the fire extinguishing module is arranged in the expansion cavity; through cooperative arrangement of the heat dissipation holes, the sealable heat dissipation mechanism and the fire extinguishing module, the problems that an existing power distribution cabinet is single in heat dissipation structure and cannot meet the heat dissipation requirement, internal electrical elements are located in a high-temperature environment for a long time, the fault occurrence probability is increased, and hidden dangers are brought to stable operation of a power system are solved.

Description

Technical Field

[0001] The present invention relates to the technical field related to power distribution cabinets, and in particular to a novel power distribution cabinet. Background Art

[0002] In today's power supply and distribution system, the distribution cabinet plays a vital role. It is responsible for the distribution and control of electric energy and the protection of various electrical equipment. It is widely used in many fields such as industrial production, commercial facilities, and residential areas. However, with the continuous growth of power demand and the continuous advancement of technology, traditional distribution cabinets have gradually exposed a series of problems that need to be solved.

[0003] From the heat dissipation perspective, the heat dissipation methods of traditional power distribution cabinets are often relatively simple and inefficient. During the operation of power equipment, a large amount of heat will be generated, especially when it is running at high load or at high ambient temperature. The heat accumulates in the cabinet and cannot be dissipated in time. This may cause the operating temperature of electrical components to rise beyond their normal operating temperature range, thereby accelerating the aging and damage of the components, seriously affecting the reliability and service life of the power distribution cabinet. For example, some traditional power distribution cabinets only rely on a small number of ventilation holes on the cabinet to dissipate heat naturally. This heat dissipation method cannot meet the heat dissipation requirements in high temperature environments or when the equipment is running for a long time, causing the internal electrical components to be in a high temperature environment for a long time, increasing the probability of failures and bringing hidden dangers to the stable operation of the power system.

[0004] Therefore, in view of the above situation, there is an urgent need to provide a new type of distribution cabinet to overcome the shortcomings in current practical applications. Summary of the invention

[0005] The purpose of the present invention is to provide a new type of power distribution cabinet to solve the problems in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention provides a new type of power distribution cabinet, comprising:

[0007] A cabinet body, wherein an expansion cavity and a power distribution cavity for installing electrical components are arranged in the cabinet body, and a partition is arranged between the expansion cavity and the power distribution cavity;

[0008] A heat dissipation hole is provided on the rear side of the cabinet, and the heat dissipation hole is connected to the power distribution cavity;

[0009] A sealable heat dissipation mechanism located in the power distribution cavity, the sealable heat dissipation mechanism comprising a rotating ring, a support shaft, a heat dissipation plate and a rotating support assembly, the rotating ring is rotatably installed in the power distribution cavity through the rotating support assembly, and the circular hole on the rotating ring corresponds to the heat dissipation hole, the heat dissipation plate is rotatably installed in the circular hole of the rotating ring through the support shaft, and a driving module for driving the rotating ring and the support shaft to rotate is also provided in the cabinet, and a sealing assembly for sealing the gap between the heat dissipation plate and the rotating ring is also provided in the rotating ring;

[0010] And a fire extinguishing module is arranged in the expansion cavity, and the fire extinguishing module is also connected to the sealable heat dissipation mechanism.

[0011] As a further solution of the present invention: a protective net is also provided on the heat dissipation hole to prevent debris from entering the cabinet.

[0012] As a further solution of the present invention: the driving module includes:

[0013] A motor is fixedly installed in the cabinet, and a driving spur gear is fixedly installed on the output shaft of the motor;

[0014] A driven spur gear meshing with the driving spur gear, wherein the driven spur gear is fixedly mounted on the rotating ring;

[0015] And a bevel gear 1, wherein the bevel gear 1 is fixedly connected to the cabinet body through multiple groups of support columns, and a bevel gear 2 meshing with the bevel gear 1 is also fixedly installed on the support shaft.

[0016] As a further solution of the present invention: the sealing assembly includes a sealing airbag fixedly installed in a circular hole of a rotating ring, and the sealing airbag is located in a gap between the heat dissipation plate and the rotating ring, a through hole is provided on the sealing airbag for the support shaft to pass through, and the rotating ring also has a cavity connected to the sealing airbag.

[0017] As a further solution of the present invention: the rotating support assembly comprises:

[0018] An annular connecting frame fixedly mounted on the rotating ring, an air guide cavity 1 is formed between the annular connecting frame and the rotating ring, and a plurality of vent holes are provided on the rotating ring, the vent holes 1 are used for communicating between the air guide cavity 1 and the cavity in the rotating ring;

[0019] An annular support frame is fixedly mounted on the cabinet, the annular support frame is rotatably connected to the annular connecting frame, a second air guide cavity is provided in the annular support frame, and a second vent hole for connecting the second air guide cavity with the first air guide cavity is provided on the side wall of the annular support frame.

[0020] As a further solution of the present invention: the sealed heat dissipation mechanism also includes a safety component for emergency resetting of the rotating ring.

[0021] As a further solution of the present invention: the insurance component includes:

[0022] A transmission shaft is rotatably installed in the cabinet, and pulleys are arranged on the transmission shaft and the rotating ring, and the two sets of pulleys are linked by a transmission belt;

[0023] A reset rack is slidably mounted in the cabinet, and a reset gear for meshing with the reset rack is fixedly mounted on the transmission shaft;

[0024] An elastic traction rope used to pull the reset rack to move, one end of the elastic traction rope is fixedly connected to the inner wall of the cabinet, and the other end of the elastic traction rope is fixedly connected to the reset rack;

[0025] A control member for fixing the reset rack, one end of the control member being fixedly connected to the inner wall of the cabinet, and the other end of the control member being fixedly connected to the end of the reset rack away from the elastic traction rope, and the control member automatically fuses when the temperature inside the cabinet reaches a predetermined value;

[0026] A positioning block, wherein the positioning block is fixedly installed in the annular connecting frame;

[0027] And a one-way blocking block for blocking the positioning block, the one-way blocking block is slidably installed in the annular support frame, and a spring for elastically supporting the one-way blocking block is also arranged in the annular support frame.

[0028] As a further solution of the present invention: the control member is a rod-shaped structure, and the control member is made of a low melting point material.

[0029] As a further solution of the present invention: the transmission belt and the elastic traction rope are both made of high temperature resistant materials.

[0030] As a further solution of the present invention: the fire extinguishing module includes a gas storage box and a nozzle, the gas storage box is arranged in the expansion cavity of the cabinet, the nozzle is fixedly installed on the inner top of the power distribution cavity, and a suction pump is arranged at the gas outlet end of the gas storage box, and a shunt pipe is arranged at the gas outlet end of the suction pump, one port of the shunt pipe is connected to the nozzle, and the other port of the shunt pipe is connected to the annular support frame through a conduit. .

[0031] By adopting the above technical scheme, the present invention has the following beneficial effects: by setting the heat dissipation holes, it is convenient to improve the ventilation effect in the distribution cavity, which is beneficial to heat dissipation. The driving module drives the rotating ring and the supporting shaft to rotate, so that when the rotating ring rotates, the heat dissipation plate rotates in the circular hole of the rotating ring, which is convenient to accelerate the air flow in the distribution cavity, thereby improving the heat dissipation effect. In the process of the heat dissipation plate following the rotation of the rotating ring, the position of the rotation axis of the heat dissipation plate is constantly changing, so that the direction of the airflow driven by it is also constantly changing, which can improve the air flow effect in the cabinet and further improve the heat dissipation quality. When a fire is detected in the power distribution cavity, the driving module will drive the rotating ring to reverse, so that the rotating ring and the heat sink return to their initial positions. At this time, the fire extinguishing module works. While the fire extinguishing module injects carbon dioxide gas into the power distribution cavity, it will also drive the sealing component to work, and use the sealing component to block the gap between the heat sink and the rotating ring, thereby achieving the blocking of the heat dissipation holes, and cooperate with the injected carbon dioxide gas to effectively extinguish the fire. Through the setting of the sealed heat dissipation mechanism, while achieving the heat dissipation function, it can also further improve the fire prevention and fire extinguishing capabilities, thereby improving the safety performance of the power distribution cabinet;

[0032] If the motor does not work in time when a fire occurs, when the temperature reaches a predetermined value and causes the control component to fuse, the elastic traction rope will pull the reset rack to move (when the reset rack is fixed by the controlled component, the end of the reset rack does not mesh with the reset gear to avoid interfering with the driving module to drive the rotating ring to rotate), the reset rack can be used to drive the reset gear and the transmission shaft to rotate, and the rotating ring and the transmission shaft can be rotated synchronously through the coordinated arrangement of the pulley and the transmission belt, and the rotation direction of the rotating ring is opposite to the rotation direction during heat dissipation (when the rotating ring rotates forward, the rotating ring drives the positioning block to rotate and contact the inclined surface of the one-way blocking block, thereby pushing the one-way blocking block to move in the annular support frame, and the one-way blocking block does not interfere with the normal initiative of the positioning block, the annular connecting frame and the rotating ring), and the rotating ring will drive the annular connecting frame to rotate in the annular support frame, so that the positioning block hits the non-inclined side of the one-way blocking block, and the one-way blocking block can be used to block the positioning block, so that the rotating ring and the heat dissipation plate are reset, which is convenient for subsequent fire extinguishing operations;

[0033] Compared with the prior art, the present invention avoids the problem that the existing power distribution cabinet has a single heat dissipation structure and cannot meet the heat dissipation requirements, causing the internal electrical components to be in a high-temperature environment for a long time, increasing the probability of failure and posing a hidden danger to the stable operation of the power system through the coordinated arrangement of heat dissipation holes, a sealable heat dissipation mechanism and a fire extinguishing module. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a structural schematic diagram of the present invention.

[0036] Figure 2 for Figure 1 Schematic diagram of the structure viewed from above.

[0037] Figure 3 for Figure 1 Schematic diagram of the rear view structure.

[0038] Figure 4 It is a structural schematic diagram of the cabinet in the present invention.

[0039] Figure 5 It is a structural schematic diagram of the sealable heat dissipation mechanism in the present invention.

[0040] Figure 6 for Figure 5 Schematic diagram of the rear view structure.

[0041] Figure 7 It is a schematic diagram of the structure of the rotating ring and the heat dissipation plate in the present invention.

[0042] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at point A in the middle.

[0043] Fig. 9 It is a schematic cross-sectional structural diagram of the rotating support assembly in the present invention.

[0044] Fig.10 for Fig. 9 Schematic diagram of the enlarged structure at point B in the middle.

[0045] In the accompanying drawings: 1-cabinet, 2-reset rack, 3-rotating ring, 4-bevel gear one, 5-air storage box, 6-nozzle, 7-heat dissipation hole, 8-protective net, 9-conduit, 10-transmission belt, 11-pulley, 12-transmission shaft, 13-reset gear, 14-elastic traction rope, 15-control part, 16-support shaft, 17-bevel gear two, 18-heat dissipation plate, 19-driven spur gear, 20-motor, 21-driving spur gear, 22-annular support frame, 23-annular connecting frame, 24-sealed airbag, 25-air guide cavity one, 26-air guide cavity two, 27-positioning block, 28-spring, 29-one-way blocking block. DETAILED DESCRIPTION

[0046] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0049] The present invention is further explained below in conjunction with specific implementation modes.

[0050] See also Figure 1-Figure 10 , an embodiment of the present invention provides a new type of power distribution cabinet, the new type of power distribution cabinet comprising:

[0051] A cabinet 1, wherein an expansion cavity and a power distribution cavity for installing electrical components are provided in the cabinet 1, and a partition is provided between the expansion cavity and the power distribution cavity; wherein the partition is made of fireproof material to ensure that the components in the expansion cavity can operate normally, and the cabinet 1 is also equipped with a cabinet door;

[0052] A heat dissipation hole 7 is provided on the rear side of the cabinet 1, and the heat dissipation hole 7 is connected to the power distribution cavity;

[0053] A sealable heat dissipation mechanism located in the power distribution cavity, the sealable heat dissipation mechanism comprises a rotating ring 3, a support shaft 16, a heat dissipation plate 18 and a rotating support assembly, the rotating ring 3 is rotatably installed in the power distribution cavity through the rotating support assembly, and the circular hole on the rotating ring 3 corresponds to the heat dissipation hole 7, the heat dissipation plate 18 is rotatably installed in the circular hole of the rotating ring 3 through the support shaft 16, and a driving module for driving the rotating ring 3 and the support shaft 16 to rotate is also provided in the cabinet 1, and a sealing assembly for sealing the gap between the heat dissipation plate 18 and the rotating ring 3 is also provided in the rotating ring 3;

[0054] And a fire extinguishing module is arranged in the expansion cavity, and the fire extinguishing module is also connected to the sealable heat dissipation mechanism.

[0055] In an embodiment of the present invention, a temperature sensor and a smoke sensor may be further provided in the distribution cavity to facilitate timely detection of a fire in the distribution cavity; the provision of the heat dissipation holes 7 facilitates the improvement of the ventilation effect in the distribution cavity, which is beneficial to heat dissipation; the driving module drives the rotating ring 3 and the support shaft 16 to rotate, so that during the rotation of the rotating ring 3, the heat dissipation plate 18 rotates in the circular hole of the rotating ring 3, which facilitates the acceleration of the air flow in the distribution cavity, thereby improving the heat dissipation effect; and during the rotation of the heat dissipation plate 18 following the rotating ring 3, the rotation axis position of the heat dissipation plate 18 is constantly changing, so that the direction of the airflow driven by it is also constantly changing, which can improve the air flow effect in the cabinet 1 and further improve the heat dissipation quality; when a fire is detected in the distribution cavity, the driving module will drive the rotating ring 3 to reverse, so that the rotating ring 3 and the heat dissipation plate 18 are restored to their initial positions (as shown in the attached figure). Figure 5 As shown), at this time, the fire extinguishing module works. While the fire extinguishing module fills the distribution cavity with carbon dioxide gas, it will also drive the sealing component to work, and use the sealing component to seal the gap between the heat dissipation plate 18 and the rotating ring 3, thereby achieving the sealing of the heat dissipation hole 7, and cooperate with the filled carbon dioxide gas to effectively extinguish the fire. Through the setting of the sealed heat dissipation mechanism, while achieving the heat dissipation function, it can also further improve the fire prevention and fire extinguishing capabilities, thereby improving the safety performance of the distribution cabinet; compared with the prior art, the present invention avoids the problem that the existing heat dissipation structure of the distribution cabinet is single and cannot meet the heat dissipation requirements through the coordinated setting of the heat dissipation hole 7, the sealable heat dissipation mechanism and the fire extinguishing module, so that the internal electrical components are in a high temperature environment for a long time, which increases the probability of failure and brings hidden dangers to the stable operation of the power system.

[0056] In one embodiment of the present invention, see Figure 1-Figure 10 The heat dissipation hole 7 is also provided with a protective net 8 for preventing debris from entering the cabinet 1;

[0057] The driving module comprises:

[0058] A motor 20 is fixedly mounted in the cabinet 1, and a driving spur gear 21 is fixedly mounted on the output shaft of the motor 20;

[0059] A driven spur gear 19 meshing with the driving spur gear 21, wherein the driven spur gear 19 is fixedly mounted on the rotating ring 3;

[0060] And a bevel gear 1 4, wherein the bevel gear 1 4 is fixedly connected to the cabinet 1 through multiple sets of support columns, and a bevel gear 2 17 meshing with the bevel gear 1 4 is also fixedly mounted on the support shaft 16;

[0061] The sealing assembly includes a sealing airbag 24 fixedly mounted in the circular hole of the rotating ring 3, and the sealing airbag 24 is located in the gap between the heat dissipation plate 18 and the rotating ring 3, and a through hole for the support shaft 16 to pass through is opened on the sealing airbag 24, and the rotating ring 3 also has a cavity connected to the sealing airbag 24;

[0062] The rotating support assembly comprises:

[0063] An annular connecting frame 23 is fixedly mounted on the rotating ring 3, an air guide cavity 25 is formed between the annular connecting frame 23 and the rotating ring 3, and a plurality of vents are provided on the rotating ring 3, the vents are used for communication between the air guide cavity 25 and the cavity in the rotating ring 3;

[0064] An annular support frame 22 is fixedly mounted on the cabinet 1, the annular support frame 22 is rotatably connected to the annular connecting frame 23, and a second air guide cavity 26 is provided in the annular support frame 22, and a second vent hole for connecting the second air guide cavity 26 with the first air guide cavity 25 is provided on the side wall of the annular support frame 22;

[0065] The sealed heat dissipation mechanism also includes a safety assembly for emergency resetting of the rotating ring 3;

[0066] The insurance component includes:

[0067] A transmission shaft 12 is rotatably installed in the cabinet 1, and pulleys 11 are provided on the transmission shaft 12 and the rotating ring 3, and the two sets of pulleys 11 are linked by a transmission belt 10;

[0068] A reset rack 2 is slidably mounted in the cabinet 1, and a reset gear 13 for meshing with the reset rack 2 is fixedly mounted on the transmission shaft 12;

[0069] An elastic traction rope 14 for pulling the reset rack 2 to move, wherein one end of the elastic traction rope 14 is fixedly connected to the inner wall of the cabinet 1, and the other end of the elastic traction rope 14 is fixedly connected to the reset rack 2;

[0070] A control member 15 for fixing the reset rack 2, one end of the control member 15 being fixedly connected to the inner wall of the cabinet 1, and the other end of the control member 15 being fixedly connected to the end of the reset rack 2 away from the elastic traction rope 14. When the temperature in the cabinet 1 reaches a predetermined value, the control member 15 is automatically fused;

[0071] A positioning block 27, wherein the positioning block 27 is fixedly installed in the annular connecting frame 23;

[0072] and a one-way blocking block 29 for blocking the positioning block 27, wherein the one-way blocking block 29 is slidably mounted in the annular support frame 22, and a spring 28 for elastically supporting the one-way blocking block 29 is also arranged in the annular support frame 22; wherein one side of the one-way blocking block 29 is provided with an inclined surface;

[0073] The control member 15 is a rod-shaped structure, and the control member 15 is made of a low-melting-point material. When a fire occurs in the cabinet 1, causing the temperature in the cabinet 1 to rise, the control member 15 will automatically melt, so that the elastic traction rope 14 can pull the reset rack 2 to move; wherein the low-melting-point material can be a fusible alloy, which is mainly composed of low-melting-point metals such as bismuth (Bi), lead (Pb), tin (Sn), cadmium (Cd) and the like in a certain proportion. For example, Wood's alloy is a typical fusible alloy, and its composition includes bismuth (50%), lead (25%), tin (12.5%) and cadmium (12.5%), and its melting point is about 70°C. This alloy has the characteristics of low melting point, low hardness, and good fluidity. Since its composition can be adjusted according to actual needs, alloys with different melting points can be obtained. By changing the proportion of metals such as bismuth, lead, tin, and cadmium, the melting point can be changed between 47-200°C to meet various different application scenarios. In the production process, control members 15 with different melting points can be selected according to actual needs;

[0074] The transmission belt 10 and the elastic traction rope 14 are both made of high temperature resistant materials; for example, the transmission belt 10 can be made of aramid fiber, and the elastic traction rope 14 can be made of silicone rubber, which is not specifically limited here.

[0075] In this embodiment, the cooperation of the annular support frame 22 and the annular connecting frame 23 facilitates the rotation and installation of the rotating ring 3 into the cabinet 1, and the enclosing effect of the annular support frame 22 and the annular connecting frame 23 is utilized, so that the rotating ring 3 and the heat sink 18 can achieve sealing of the heat dissipation hole 7 in the initial state, and the cooperation of the air guide cavity 26 and the air guide cavity 1 25 can also facilitate the conduction of gas, and the motor 20 can drive the rotating ring 3 to rotate by driving the active spur gear 21 to rotate, and cooperate with the meshing action of the driven spur gear 19 and the active spur gear 21, and at the same time, the support shaft 16 and the bevel gear 2 17 will rotate synchronously with the rotating ring 3, and through the meshing action of the bevel gear 2 17 and the bevel gear 1 4, the support shaft 16 rotates in the process of following the rotation of the rotating ring 3, and the support shaft 16 can drive the heat sink 18 to rotate in the circular hole of the rotating ring 3, so as to achieve the heat dissipation function;

[0076] If the motor 20 does not work in time when a fire occurs, when the temperature reaches a predetermined value and causes the control member 15 to melt, the elastic traction rope 14 will pull the reset rack 2 to move (when the reset rack 2 is fixed by the control member 15, the end of the reset rack 2 does not mesh with the reset gear 13 to avoid interfering with the driving module to drive the rotating ring 3 to rotate). The reset rack 2 can drive the reset gear 13 and the transmission shaft 12 to rotate. Through the coordinated arrangement of the pulley 11 and the transmission belt 10, the rotating ring 3 and the transmission shaft 12 can be rotated synchronously, and the rotation direction of the rotating ring 3 is opposite to the rotation direction during heat dissipation ( When the rotating ring 3 rotates forward, the rotating ring 3 drives the positioning block 27 to rotate and contact the inclined surface of the one-way blocking block 29, thereby pushing the one-way blocking block 29 to move in the annular support frame 22. At this time, the one-way blocking block 29 does not interfere with the normal activeness of the positioning block 27, the annular connecting frame 23 and the rotating ring 3. At this time, the rotating ring 3 will drive the annular connecting frame 23 to rotate in the annular support frame 22, so that the positioning block 27 hits the non-inclined side of the one-way blocking block 29. The one-way blocking block 29 can be used to block the positioning block 27, so that the rotating ring 3 and the heat sink 18 are reset, which is convenient for subsequent fire extinguishing operations.

[0077] In one embodiment of the present invention, see Figure 1-Figure 10 The fire extinguishing module includes a gas storage box 5 and a nozzle 6, the gas storage box 5 is arranged in the expansion cavity of the cabinet 1, the nozzle 6 is fixedly installed on the inner top of the distribution cavity, and a suction pump is arranged at the gas outlet end of the gas storage box 5, and a shunt pipe is arranged at the gas outlet end of the suction pump, one port of the shunt pipe is connected with the nozzle 6, and the other port of the shunt pipe is connected with the annular support frame 22 through a conduit 9; wherein the shunt pipe is in the form of one divided into two, so as to facilitate the gas outlet end of the suction pump to be connected with two positions.

[0078] In this embodiment, the gas storage box 5 is filled with carbon dioxide gas. When a fire occurs, the driving module is first used to drive the rotating ring 3 to reverse and reset. After the reset is completed, the suction pump works. The suction pump can be used to deliver the carbon dioxide gas in the gas storage box 5 to the nozzle 6 and the conduit 9. The nozzle 6 can be used to spray the carbon dioxide gas into the distribution cavity. At the same time, the conduit 9 guides the carbon dioxide gas into the sealing airbag 24 through the gas guide cavity 26, the gas guide cavity 1 25 and the cavity of the rotating ring 3, so that the sealing airbag 24 expands and blocks the gap between the heat dissipation plate 18 and the rotating ring 3, and finally achieves the blocking of the heat dissipation hole 7 to prevent the carbon dioxide gas in the expansion cavity from leaking out, thereby improving the fire extinguishing effect.

[0079] In summary, the working principle of the present invention is as follows: by setting the heat dissipation holes 7, it is convenient to improve the ventilation effect in the distribution cavity and facilitate heat dissipation. The driving module drives the rotating ring 3 and the support shaft 16 to rotate, so that during the rotation of the rotating ring 3, the heat dissipation plate 18 rotates in the circular hole of the rotating ring 3, which is convenient for accelerating the air flow in the distribution cavity, thereby improving the heat dissipation effect. In the process of the heat dissipation plate 18 following the rotation of the rotating ring 3, the rotation axis position of the heat dissipation plate 18 is constantly changing, so that the direction of the air flow driven by it is also constantly changing, which can improve the air flow effect in the cabinet 1 and further improve the heat dissipation quality. When a fire is detected in the distribution cavity, the driving module will drive the rotating ring 3 to reverse, so that the rotating ring 3 and the heat dissipation plate 18 return to their initial positions (as shown in the attached figure). Figure 5As shown), at this time, the fire extinguishing module works. While the fire extinguishing module fills the distribution cavity with carbon dioxide gas, it will also drive the sealing component to work, and use the sealing component to block the gap between the heat dissipation plate 18 and the rotating ring 3, thereby achieving the blocking of the heat dissipation hole 7, and cooperate with the filled carbon dioxide gas to effectively extinguish the fire. Through the setting of the sealed heat dissipation mechanism, while achieving the heat dissipation function, it can also further improve the fire prevention and fire extinguishing capabilities, thereby improving the safety performance of the distribution cabinet. Specifically, through the coordinated setting of the annular support frame 22 and the annular connecting frame 23, it is convenient to rotatably install the rotating ring 3 into the cabinet body 1, and by utilizing the enclosure effect of the annular support frame 22 and the annular connecting frame 23, the rotating ring 3 and the heat dissipation plate 18 can achieve the sealing of the heat dissipation hole 7 in the initial state, and by utilizing the coordinated setting of the air guide cavity 26 and the air guide cavity 1 25, it is also convenient to achieve gas conduction, and the motor 20 drives the active spur gear 21 to rotate, and cooperates with the meshing of the driven spur gear 19 and the active spur gear 21. The function is to drive the rotating ring 3 to rotate. At the same time, the support shaft 16 and the bevel gear 17 will rotate synchronously with the rotating ring 3. Through the meshing action of the bevel gear 17 and the bevel gear 1 4, the support shaft 16 rotates in the process of following the rotating ring 3 to rotate. The support shaft 16 can drive the heat sink 18 to rotate in the circular hole of the rotating ring 3 to achieve the heat dissipation function. When a fire occurs, the driving module is first used to drive the rotating ring 3 to reverse and reset. After the reset is completed, the suction pump works. The suction pump can be used to deliver the carbon dioxide gas in the gas storage box 5 into the nozzle 6 and the conduit 9. The nozzle 6 can be used to spray the carbon dioxide gas into the distribution cavity. At the same time, the conduit 9 introduces the carbon dioxide gas into the sealing airbag 24 through the gas guide cavity 26, the gas guide cavity 1 25 and the cavity of the rotating ring 3, so that the sealing airbag 24 expands and blocks the gap between the heat sink 18 and the rotating ring 3, and finally blocks the heat dissipation hole 7 to prevent the carbon dioxide gas in the expansion cavity from leaking out, thereby improving the fire extinguishing effect.

[0080] If the motor 20 does not work in time when a fire occurs, when the temperature reaches a predetermined value and causes the control member 15 to melt, the elastic traction rope 14 will pull the reset rack 2 to move (when the reset rack 2 is fixed by the control member 15, the end of the reset rack 2 does not mesh with the reset gear 13 to avoid interfering with the driving module to drive the rotating ring 3 to rotate). The reset rack 2 can drive the reset gear 13 and the transmission shaft 12 to rotate. Through the coordinated arrangement of the pulley 11 and the transmission belt 10, the rotating ring 3 and the transmission shaft 12 can be rotated synchronously, and the rotation direction of the rotating ring 3 is opposite to the rotation direction during heat dissipation ( When the rotating ring 3 rotates forward, the rotating ring 3 drives the positioning block 27 to rotate and contact the inclined surface of the one-way blocking block 29, thereby pushing the one-way blocking block 29 to move in the annular support frame 22. At this time, the one-way blocking block 29 does not interfere with the normal activeness of the positioning block 27, the annular connecting frame 23 and the rotating ring 3. At this time, the rotating ring 3 will drive the annular connecting frame 23 to rotate in the annular support frame 22, so that the positioning block 27 hits the non-inclined side of the one-way blocking block 29. The one-way blocking block 29 can be used to block the positioning block 27, so that the rotating ring 3 and the heat sink 18 are reset, which is convenient for subsequent fire extinguishing operations.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A new type of power distribution cabinet, comprising a cabinet body, wherein the cabinet body is provided with an expansion cavity and a power distribution cavity for installing electrical components, and a partition is provided between the expansion cavity and the power distribution cavity, characterized in that: Also includes: A heat dissipation hole is provided on the rear side of the cabinet, and the heat dissipation hole is connected to the power distribution cavity; A sealable heat dissipation mechanism located in the power distribution cavity, the sealable heat dissipation mechanism comprising a rotating ring, a support shaft, a heat dissipation plate and a rotating support assembly, the rotating ring is rotatably installed in the power distribution cavity through the rotating support assembly, and the circular hole on the rotating ring corresponds to the heat dissipation hole, the heat dissipation plate is rotatably installed in the circular hole of the rotating ring through the support shaft, and a driving module for driving the rotating ring and the support shaft to rotate is also provided in the cabinet, and a sealing assembly for sealing the gap between the heat dissipation plate and the rotating ring is also provided in the rotating ring; And a fire extinguishing module is arranged in the expansion cavity, and the fire extinguishing module is also connected to the sealable heat dissipation mechanism.

2. The new power distribution cabinet according to claim 1 is characterized in that: The heat dissipation holes are also provided with a protective net for preventing debris from entering the cabinet.

3. The new power distribution cabinet according to claim 1 is characterized in that: The driving module comprises: A motor is fixedly installed in the cabinet, and a driving spur gear is fixedly installed on the output shaft of the motor; A driven spur gear meshing with the driving spur gear, wherein the driven spur gear is fixedly mounted on the rotating ring; And a bevel gear 1, wherein the bevel gear 1 is fixedly connected to the cabinet body through multiple groups of support columns, and a bevel gear 2 meshing with the bevel gear 1 is also fixedly installed on the support shaft.

4. The new power distribution cabinet according to claim 1 is characterized in that: The sealing assembly includes a sealing airbag fixedly installed in a circular hole of a rotating ring, and the sealing airbag is located in a gap between the heat sink and the rotating ring. The sealing airbag is provided with a through hole for a supporting shaft to pass through, and the rotating ring also has a cavity connected to the sealing airbag.

5. The new power distribution cabinet according to claim 4 is characterized in that: The rotating support assembly comprises: An annular connecting frame fixedly mounted on the rotating ring, an air guide cavity 1 is formed between the annular connecting frame and the rotating ring, and a plurality of vent holes are provided on the rotating ring, the vent holes 1 are used for communicating between the air guide cavity 1 and the cavity in the rotating ring; An annular support frame is fixedly mounted on the cabinet, the annular support frame is rotatably connected to the annular connecting frame, a second air guide cavity is provided in the annular support frame, and a second vent hole for connecting the second air guide cavity with the first air guide cavity is provided on the side wall of the annular support frame.

6. The new power distribution cabinet according to claim 3 is characterized in that: The sealed heat dissipation mechanism also includes a safety assembly for emergency resetting of the rotating ring.

7. The new power distribution cabinet according to claim 6 is characterized in that: The insurance component includes: A transmission shaft is rotatably installed in the cabinet, and pulleys are arranged on the transmission shaft and the rotating ring, and the two sets of pulleys are linked by a transmission belt; A reset rack is slidably mounted in the cabinet, and a reset gear for meshing with the reset rack is fixedly mounted on the transmission shaft; An elastic traction rope used to pull the reset rack to move, one end of the elastic traction rope is fixedly connected to the inner wall of the cabinet, and the other end of the elastic traction rope is fixedly connected to the reset rack; A control member for fixing the reset rack, one end of the control member being fixedly connected to the inner wall of the cabinet, and the other end of the control member being fixedly connected to the end of the reset rack away from the elastic traction rope, and the control member automatically fuses when the temperature inside the cabinet reaches a predetermined value; A positioning block, wherein the positioning block is fixedly installed in the annular connecting frame; And a one-way blocking block for blocking the positioning block, the one-way blocking block is slidably installed in the annular support frame, and a spring for elastically supporting the one-way blocking block is also arranged in the annular support frame.

8. The new power distribution cabinet according to claim 7 is characterized in that: The control member is a rod-shaped structure and is made of a low melting point material.

9. The new power distribution cabinet according to claim 7 is characterized in that: The transmission belt and the elastic traction rope are both made of high temperature resistant materials.

10. The new power distribution cabinet according to claim 5 is characterized in that: The fire extinguishing module includes a gas storage box and a nozzle. The gas storage box is arranged in the expansion cavity of the cabinet, the nozzle is fixedly installed on the inner top of the distribution cavity, and a suction pump is arranged at the gas outlet end of the gas storage box. A shunt pipe is arranged at the gas outlet end of the suction pump, one port of the shunt pipe is connected to the nozzle, and the other port of the shunt pipe is connected to the annular support frame through a conduit.

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