Grid-connected cabinet with anti-burning structure

Abstract

The invention provides a grid-connected cabinet with an anti-burning structure, each of three bearing parts comprises a bearing plate which is arranged in a horizontal state and is provided with a through hole array arranged in a honeycomb shape, the bearing plate is obliquely provided with a bearing plate, the bearing plate is provided with a plurality of mounting holes and a plurality of arc isolation grooves, the plurality of mounting holes are used for mounting electrical elements, and the arc isolation grooves are communicated with the mounting holes. The plurality of arc isolation grooves are used for forming a blocking path so as to suppress the arc; the heat dissipation pipe row mechanism comprises four heat dissipation pipe rows which are distributed in a rectangular shape and configured to be capable of reciprocating along a heat dissipation path, and each heat dissipation pipe row is filled with a phase change substance which can absorb heat in the cabinet body and conduct heat dissipation under a specified temperature threshold. The problems that an existing grid-connected cabinet depends on an external driving system to control heat dissipation, the rapid protection requirement for sudden high-temperature faults is difficult to deal with, arc protection measures for the grid-connected cabinet are lacked, the burning risk of the grid-connected cabinet is increased, and the safety performance is reduced are solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of grid-connected cabinets, and particularly relates to a grid-connected cabinet with a burnout prevention structure. BACKGROUND

[0002] The grid-connected cabinet is a special power distribution device for realizing safe access of electric energy from a power generation system to a power grid and performing electric energy distribution, metering, protection and monitoring.

[0003] As disclosed in a photovoltaic grid-connected cabinet with the publication number CN119171289B, a plurality of breathing plates are fixedly installed inside the cabinet support, and the inner cavity of the cabinet support is divided into different installation rooms by the breathing plates. The outer shell is assembled by a plurality of metal plates, and the plurality of metal plates are fixedly installed on the left and right sides, the top and the rear surface of the cabinet support. The surface of each metal plate is provided with a heat dissipation hole. The breathing plate comprises a base plate and a plurality of heat conducting blocks. The plurality of heat conducting blocks are embedded in the inner surface of the base plate. A flow guide pipe is embedded in the inner part of the base plate. The flow guide pipe penetrates through the heat conducting blocks and is fixedly connected to connect the plurality of heat conducting blocks in series. The inner part of the heat conducting block is provided with a breathing cavity. The two sides of the heat conducting block are provided with an input hole and an output hole respectively. The inner part of the input hole and the output hole is movably installed with an anti-backflow sheet. The input hole and the output hole are communicated with the breathing cavity. The outer surface of the base plate is provided with an exhaust hole, which is aligned with the output hole. The inner part of the breathing cavity is provided with an expansion ball. The inner cavities of the plurality of expansion balls are connected in series by the flow guide pipe. The inner part of the cabinet support is fixedly installed with an intermittent pumping mechanism. The intermittent pumping mechanism supplies flow medium to the flow guide pipe.

[0004] Although the above-mentioned patent realizes directional discharge and local heat dissipation control of the heat in the grid-connected cabinet, the structure relies on an external driving system to control heat dissipation. Once the pumping mechanism or pipeline fails, the heat dissipation function will be paralyzed. At the same time, the temperature monitoring and response mechanism reacts slowly, which is difficult to meet the rapid protection demand of sudden high temperature failure, the risk identification lags behind, and there is a lack of arc protection measures for the grid-connected cabinet, which increases the burnout risk of the grid-connected cabinet and reduces the safety performance.

[0005] Therefore, how to effectively reduce the burnout risk of the grid-connected cabinet and improve its safety performance has become a problem to be solved by the technical personnel in the field. SUMMARY

[0006] The purpose of the present application is to solve the problem that the existing grid-connected cabinet relies on an external driving system to control heat dissipation, is difficult to meet the rapid protection demand of sudden high temperature failure, and lacks arc protection measures for the grid-connected cabinet, which increases the burnout risk of the grid-connected cabinet and reduces the safety performance.

[0007] In order to achieve the above-mentioned purpose, the present application provides a grid-connected cabinet with a burnout prevention structure, which comprises a cabinet body, an electrical support and a heat dissipation pipe arrangement mechanism arranged in the cabinet body. The cabinet body has an upper arc-shaped section and a lower arc-shaped section, and a plurality of heat dissipation fans are arranged in the upper arc-shaped section and the lower arc-shaped section along the arc length direction of the upper arc-shaped section and the lower arc-shaped section, and the plurality of heat dissipation fans can form a heat dissipation path from bottom to top in the cabinet body. The electrical support is sequentially divided into a first bearing part, a second bearing part and a third bearing part along the heat dissipation path, the three bearing parts each include a support plate arranged in a horizontal state and having a honeycomb-shaped array of through holes thereon, an inclined bearing plate is arranged on the support plate, the bearing plate has a plurality of mounting holes and a plurality of arc separation grooves, the plurality of mounting holes are used for mounting electrical elements, and the plurality of arc separation grooves are used for forming a blocking path to suppress electric arcs. The heat pipe row mechanism includes four heat pipe rows arranged in a rectangular distribution and configured to be able to reciprocate along the heat dissipation path, and each heat pipe row is filled with a phase change material capable of absorbing heat in the cabinet body and dissipating heat at a specified temperature threshold.

[0008] Optionally, the cabinet body is provided with a first cabinet door and a second cabinet door for protection and each having a lock body, the first cabinet door is provided with a control panel for electrically controlling the electrical elements and the lock body.

[0009] Optionally, the cabinet body is provided with two electric field testing sensors, which are electrically connected with the lock bodies on the first cabinet door and the second cabinet door to control the lock bodies to be locked in the powered state or released in the power-off state.

[0010] Optionally, a plurality of through grooves are arranged in the upper arc-shaped section and the lower arc-shaped section along the arc length direction thereof, and a plurality of heat dissipation fans are correspondingly arranged in each through groove.

[0011] Optionally, an insulating layer is arranged in each arc separation groove to isolate current to form a blocking path to suppress electric arcs.

[0012] Optionally, each bearing part further includes an air cooling assembly, the air cooling assembly includes a second drive motor arranged on the support plate, a swing frame connected to a transmission end of the second drive motor, and a spray gun connected to the swing frame, the spray gun is used for spraying cooling gas to the bearing plate to dissipate heat.

[0013] Optionally, the bearing plate is divided into a first bearing section, a wire arranging section and a second bearing section from top to bottom, the first bearing section and the second bearing section each have a plurality of mounting holes and a plurality of arc separation grooves, and the wire arranging section is used for arranging wires of the electrical elements on the first bearing section and the second bearing section.

[0014] Optionally, the first bearing section and the second bearing section each have a first temperature sensor for monitoring the temperature thereon.

[0015] As an option, the heat pipe row mechanism further comprises two drive assemblies symmetrically arranged on the two side walls of the cabinet body, each drive assembly comprises a supporting slide rail and two guide slide rails arranged on the two sides of the supporting slide rail, a sliding block is connected on the supporting slide rail and the two guide slide rails, two supporting plates are symmetrically arranged on the sliding block, a supporting cylinder is arranged at the upper end of each supporting plate, and the two ends of the four heat pipe rows are communicated with the supporting cylinders, so that when the sliding block moves along the supporting slide rail, the four heat pipe rows can be driven to reciprocate along the heat dissipation path.

[0016] As an option, a second temperature sensor for monitoring the temperature of the four heat pipe rows is arranged on the sliding block.

[0017] The beneficial effects of the present application are as follows: The grid-connected cabinet with burnout prevention structure provided by the present application realizes internal driving heat dissipation by using the upper arc-shaped section and the lower arc-shaped section and the plurality of heat dissipation fans, effectively avoids the failure risk of external driving, improves the heat dissipation efficiency through the arrangement of the support plate with the honeycomb-shaped array of through holes, and improves the ability of the grid-connected cabinet to cope with sudden high-temperature faults and effectively prevents the generation and spread of electric arcs through the arrangement of the plurality of electric arc isolation grooves and the four heat pipe rows. Therefore, compared with the existing grid-connected cabinet, the present application can significantly reduce the burnout risk of the grid-connected cabinet and improve its safety performance.

[0018] According to the above, the technical scheme of the present application can effectively solve the problems of the existing grid-connected cabinet, such as relying on an external driving system to control heat dissipation, being difficult to cope with the rapid protection demand of sudden high-temperature faults, and lacking electric arc protection measures for the grid-connected cabinet, resulting in an increased burnout risk and reduced safety performance of the grid-connected cabinet.

[0019] Other features and advantages of the present application will be described in detail in the subsequent specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application can be better understood by reference to the following description taken in conjunction with the accompanying drawings, in which like or similar elements are referred to with the same or similar reference numerals, and in which:

[0021] Figure 1 Fig. 1 shows a structural schematic diagram of a grid-connected cabinet with burnout prevention structure according to an embodiment of the present application from a first perspective; Figure 2 Fig. 2 shows a structural schematic diagram of a grid-connected cabinet with burnout prevention structure according to an embodiment of the present application from a second perspective; Figure 3 Fig. 3 shows a structural schematic diagram of a grid-connected cabinet with burnout prevention structure according to an embodiment of the present application from a third perspective; Figure 4 A structural schematic diagram of a grid-connected cabinet with anti-burnout structure is shown in a fourth perspective according to an embodiment of the present application; Figure 5 A structural schematic diagram of an upper arc segment is shown according to an embodiment of the present application; Figure 6 A structural schematic diagram of an electrical support is shown according to an embodiment of the present application; Figure 7 A structural schematic diagram of a first bearing segment is shown according to an embodiment of the present application; Figure 8 A structural schematic diagram of a heat pipe row mechanism is shown according to an embodiment of the present application.

[0022] Reference signs: 1, cabinet body; 101, upper arc segment; 1011, heat dissipation hole; 102, lower arc segment; 2, support plate; 201, through hole array; 3, mounting hole; 4, electric arc isolation groove; 5, electrical element; 6, heat pipe row; 7, lock body; 8, first cabinet door; 9, second cabinet door; 10, control panel; 11, electricity testing sensor; 12, through groove; 13, heat dissipation support; 14, heat dissipation blade; 15, first driving motor; 16, electric push rod; 17, arc baffle; 18, support pile; 19, guide inclined plate; 20, support; 21, insulation layer; 22, wire arranging groove; 23, second driving motor; 24, swing bracket; 25, spray gun; 26, first bearing segment; 27, wire arranging segment; 28, second bearing segment; 29, first temperature sensor; 30, support slide rail; 31, guide slide rail; 32, sliding block; 33, support plate; 34, support cylinder; 35, injection nozzle; 36, second temperature sensor. DETAILED DESCRIPTION

[0023] In order for those skilled in the art to more fully understand the technical solutions of the present application, in the following, exemplary embodiments of the present application will be described more fully and in detail with reference to the accompanying drawings. Obviously, one or more of the embodiments of the present application described below are only one or more of the specific manners in which the technical solutions of the present application can be implemented, and are not exhaustive. It should be understood that the technical solutions of the present application can be implemented in other manners belonging to one general inventive concept without being limited by the exemplary described embodiments. Based on one or more embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0024] Reference Figures 1-8 , the embodiment of the present application provides a grid-connected cabinet with anti-burnout structure, comprising a cabinet body 1 and an electrical support and a heat pipe row mechanism arranged in the cabinet body 1.

[0025] The cabinet body 1 has an upper arc segment 101 and a lower arc segment 102, and a plurality of heat dissipation fans are arranged along the arc length direction of the upper arc segment 101 and the lower arc segment 102, which can form a heat dissipation path from bottom to top in the cabinet body 1.

[0026] The electrical support is sequentially divided into a first bearing part, a second bearing part and a third bearing part along the heat dissipation path, and the three bearing parts each include a support plate 2 arranged in a horizontal state and having a honeycomb-shaped array of through holes 201, and a bearing plate is arranged on the support plate 2, the bearing plate has a plurality of mounting holes 3 for mounting electrical elements 5 and a plurality of arc isolation grooves 4 for forming a blocking path to suppress the arc.

[0027] The heat pipe row mechanism includes four heat pipe rows 6 arranged in a rectangular distribution and configured to be able to reciprocate along the heat dissipation path, and each heat pipe row 6 is filled with a phase change material capable of absorbing heat in the cabinet body 1 and dissipating heat at a specified temperature threshold.

[0028] In an embodiment, the cabinet body 1 is provided with a first cabinet door 8 and a second cabinet door 9 for protection and each having a lock body 7, and the first cabinet door 8 is provided with a control panel 10 for electrically controlling the electrical elements 5 and the lock body 7.

[0029] Specifically, the electrical elements 5 are grid-connected cabinet essential elements such as incoming line cabinet devices, bus bars and outgoing line cabinet devices. The control panel 10 is powered by the bus bar to electrically control the electrical elements 5 in the cabinet body 1 to monitor the operation of the grid-connected cabinet in real time. The lock body 7 is an electromagnetic lock to achieve electrical control of the first cabinet door 8 and the second cabinet door 9.

[0030] In an embodiment, two electricity testing sensors 11 are arranged in the cabinet body 1 and are electrically connected to the lock bodies 7 on the first cabinet door 8 and the second cabinet door 9, respectively, to control the lock bodies 7 to be locked in the powered state or released in the power-off state.

[0031] Specifically, the two electricity testing sensors 11 are electrically connected to the lock bodies 7 on the first cabinet door 8 and the second cabinet door 9, respectively, so that when the incoming line side bus bar is live, the electricity testing sensor 11 can detect an electrical signal to make the lock body 7 in a locked state to isolate the live area; when the bus bar loses power, the electricity testing sensor 11 has no signal, and the lock body 7 is in a released state. At this time, the operation and maintenance personnel can use an external lock such as a five-proof lock to open the first cabinet door 8 and the second cabinet door 9, thereby significantly improving the safety of the grid-connected cabinet, preventing the operation and maintenance personnel from entering the live space and causing personal injury, and thereby enhancing the safety of equipment operation.

[0032] In a specific embodiment, the upper arc-shaped section 101 is provided with a plurality of heat dissipation holes 1011, which are used to discharge the heat diffused into the heat dissipation path outward.

[0033] In an embodiment, the upper arc-shaped section 101 and the lower arc-shaped section 102 are both provided with a plurality of through grooves 12 along the arc length direction thereof, and a plurality of heat dissipation fans are correspondingly arranged in each through groove 12.

[0034] In a specific embodiment, each heat dissipation fan comprises a heat dissipation bracket 13 connected with the wall of each through groove 12, and the heat dissipation bracket 13 is connected with a heat dissipation blade 14 and a first driving motor 15 on two sides thereof, respectively, and the first driving motor 15 can drive the heat dissipation blade 14 to rotate.

[0035] Specifically, the heat dissipation blades 14 in the upper arc-shaped section 101 are all directed outward of the cabinet 1, so as to suck and discharge the heat of the cabinet 1 outward, and the heat dissipation blades 14 in the lower arc-shaped section 102 are all directed inward of the cabinet 1, so as to suck and discharge the external air into the cabinet 1, so as to form a heat dissipation path from bottom to top, so that the heat of the cabinet 1 is diffused upward and discharged outward under the pushing of the external air, thereby realizing the rapid heat dissipation of the cabinet 1.

[0036] In a specific embodiment, the arc length of the upper arc-shaped section 101 is greater than that of the lower arc-shaped section 102, so that the air entering the cabinet 1 from the lower arc-shaped section 102 can be in sufficient contact with the heat in the cabinet 1, and a larger heat dissipation area is provided to accelerate the discharge of the heat, so that the heat dissipation efficiency is improved.

[0037] In an embodiment, the upper arc-shaped section 101 is provided with four electric push rods 16, and the four electric push rods 16 are connected with an arc-shaped baffle 17, which is used to protect the upper arc-shaped section 101.

[0038] Specifically, the distance between the arc-shaped baffle 17 and the upper arc-shaped section 101 can be adjusted by the four electric push rods 16, so as to be adjusted flexibly according to the use requirement of the grid-connected cabinet, so as to prevent the external impurities from entering the cabinet 1 or causing the blockage of the heat dissipation holes 1011, thereby providing protection for the stable operation of the cabinet 1.

[0039] In a specific embodiment, the lower end of the lower arc-shaped section 102 is connected with a support pile 18 for supporting the cabinet 1. Specifically, the support pile 18 can increase the distance between the lower arc-shaped section 102 and the ground while supporting the cabinet 1, thereby facilitating the suction of the external air by the heat dissipation blades 14 in the lower arc-shaped section 102.

[0040] In a specific embodiment, the two ends of the lower arc-shaped section 102 are symmetrically provided with guide inclined plates 19, which are used to guide the impurities attached to the outer side of the cabinet 1 outward, so as to avoid the situation that external impurities such as rainwater and impurity particles enter the cabinet 1 along the lower arc-shaped section 102 or penetrate into the first driving motor 15, so as to ensure the stable operation of the grid-connected cabinet.

[0041] In an embodiment, the upper end of the lower arc-shaped section 102 is provided with a support 20, and the support plate 2 of the first bearing part is connected to the support 20.

[0042] In an embodiment, an insulating layer 21 is arranged in each arc isolation groove 4, which is used to isolate the current to form a blocking path and suppress the arc.

[0043] In a specific embodiment, the insulating layer 21 is a layered structure made of aerogel felt.

[0044] Specifically, the arc isolation grooves 4 are arranged on the bearing plate in a decreasing spacing from outside to inside. When the arc is generated, the arc is gradually stretched and cooled through the arc isolation grooves 4, and the energy is dispersed and consumed in the grooves, which can effectively suppress the diffusion of the arc, reduce the risk of burning out of the key components inside the grid-connected cabinet, and improve the operation stability and reliability. At the same time, the aerogel felt can completely block the heat conduction due to its excellent heat insulation performance, so as to avoid the high temperature of the arc being transmitted to the adjacent electrical elements 5 to ignite them and prevent the high-temperature chain reaction from causing the grid-connected cabinet to burn out. In addition, this structure design also reduces the indirect burning factors such as abnormal current and voltage caused by unstable operation of the electrical elements 5, effectively reducing the risk of burning out of the grid-connected cabinet.

[0045] In an embodiment, the support plate 2 and the bearing plate form a wire arranging groove 22 for arranging the electrical elements 5. Specifically, the arrangement of the wire arranging groove 22 provides a regular and orderly space for the wire arrangement of the electrical elements 5, so that the line arrangement of the electrical elements 5 is more reasonable, and the disorderly entanglement of the lines is avoided. The regular line arrangement can effectively reduce the local overheating problem caused by poor line contact, short circuit, etc., and reduce the risk of burning out of the elements and the cabinet due to the arc caused by line failure; at the same time, the reasonable wire arrangement is helpful for uniform heat dissipation and prevents local heat accumulation from causing high temperature, thereby providing a strong guarantee for the safe and stable operation of the grid-connected cabinet, and greatly improving the anti-burning capacity of the grid-connected cabinet.

[0046] In an embodiment, each bearing part further comprises an air cooling assembly, which comprises a second driving motor 23 arranged on the support plate 2, a swing frame 24 connected to a transmission end of the second driving motor 23, and a spray gun 25 connected to the swing frame 24, the spray gun 25 being used for spraying cooling gas to the support plate to dissipate heat. Specifically, when the second driving motor 23 drives the swing frame 24 to swing, the spray gun 25 connected to the swing frame 24 can change the spraying direction accordingly, so that the spray gun 25 can spray cooling gas at multiple angles to the support plate according to the needs. When an arc appears on the support plate, the multi-angle sprayed cooling gas can quickly act on the arc to disrupt the energy distribution of the arc, thereby achieving arc extinguishing. At the same time, the spray gun 25 fully covers the surface of the support plate to enhance the heat dissipation effect, thereby effectively avoiding problems such as equipment short circuit and component burning caused by the continuous existence of the arc, dissipating heat in time to prevent local overheating, ensuring the stable operation of the grid-connected cabinet, and reducing the burning risk. The specific structure and working principle of the spray gun 25 are the existing technology, such as a compressed air spray gun, which will not be described in detail herein.

[0047] In a specific embodiment, the support plate 2 is a flat plate structure made of ceramic material. Specifically, the ceramic material itself has excellent insulation performance, which can effectively block the current between the bearing parts to avoid arc caused by leakage or short circuit, thereby reducing the burning risk from the root. The high-temperature resistance characteristic can withstand high temperature without deformation or damage when an arc is generated, thereby ensuring the structural stability. In combination with the design of the honeycomb-shaped through-hole array 201, on the one hand, the air flow area is increased, so that the cooling gas can pass more smoothly to accelerate heat dissipation and reduce local temperature; on the other hand, this structure can disperse arc energy. When an arc is generated, the through-hole can guide the arc to disperse to avoid energy concentration, thereby effectively preventing the burning of components caused by high temperature or arc in the grid-connected cabinet, and improving the safety and reliability of the equipment operation.

[0048] In an embodiment, the support plate is divided into a first bearing section 26, a wire arrangement section 27, and a second bearing section 28 from top to bottom, the first bearing section 26 and the second bearing section 28 are each provided with a plurality of mounting holes 3 and a plurality of arc isolation grooves 4, and the wire arrangement section 27 is used for arranging the electrical elements 5 on the first bearing section 26 and the second bearing section 28. Specifically, the segmented arrangement of the first bearing section 26, the wire arrangement section 27, and the second bearing section 28 can optimize the internal space of the cabinet 1, realize the rational arrangement of the electrical elements 5, and reduce the risk of arc generation and heat accumulation. In addition, the inclined arrangement of the first bearing section 26 and the second bearing section 28 can increase the contact area with air, thereby accelerating the heat dissipation efficiency and further reducing the burning risk of the grid-connected cabinet.

[0049] In one embodiment, the first bearing section 26 and the second bearing section 28 are each provided with a first temperature sensor 29 for monitoring the temperature thereon. When the temperature on the first bearing section 26 and the second bearing section 28 reaches a monitoring threshold, the heat dissipation or isolation measures are timely implemented through the control panel 10, so as to effectively cope with the sudden high temperature failure and realize the rapid protection of the grid-connected cabinet.

[0050] In a specific embodiment, the heat pipe row mechanism further comprises two driving assemblies symmetrically arranged on the two side walls of the cabinet body 1. Each driving assembly comprises a supporting slide rail 30 and two guide slide rails 31 arranged on the two sides of the supporting slide rail 30. A sliding block 32 is connected to the supporting slide rail 30 and the two guide slide rails 31. Two supporting plates 33 are symmetrically arranged on the sliding block 32. A supporting cylinder 34 is arranged at the upper end of each supporting plate 33. The two ends of the four heat pipe rows 6 are communicated with the supporting cylinders 34. When the sliding block 32 moves along the supporting slide rail 30, the four heat pipe rows 6 can be driven to reciprocate along the heat dissipation path.

[0051] In one embodiment, the supporting cylinder 34 is provided with an injection nozzle 35 for injecting phase change material into each heat pipe row 6.

[0052] In one embodiment, the sliding block 32 is provided with a second temperature sensor 36 for monitoring the temperature of the four heat pipe rows 6.

[0053] Specifically, through the arrangement of the supporting slide rail 30, the two guide slide rails 31 and the sliding block 32, the four heat pipe rows 6 can be moved to the heat accumulation area of the cabinet body 1 and rapidly absorb heat by using the phase change material, thereby effectively reducing the risk of burning the grid-connected cabinet.

[0054] In addition, the phase change material can be n-tetradecane, n-hexadecane and the like. The alkane liquid has a specific boiling point. When the temperature in the cabinet body 1 rises to the vicinity of the melting point of the phase change material, the phase change material will absorb a large amount of heat and gradually change from liquid to gas, thereby achieving rapid heat absorption of the cabinet body 1. However, when the surrounding temperature is lower than the boiling point of the phase change material, the phase change material will release heat. Therefore, when the internal heat of the grid-connected cabinet accumulates, the four heat pipe rows 6 are first moved to the heat accumulation area for rapid heat absorption. When the second temperature sensor 36 detects that the temperature of the four heat pipe rows 6 reaches a specified temperature threshold, i.e. the boiling point of the phase change material, the four heat pipe rows 6 are driven to move to the upper end of the cabinet body 1 to release heat to the four heat pipe rows 6, so that the phase change material is reduced to liquid again to be moved to the heat accumulation area for heat absorption again. Therefore, the heat dissipation efficiency of the cabinet body 1 is greatly improved, and the safety performance of the grid-connected cabinet is improved.

[0055] In addition, the specific structure and working principle of the injection nozzle 35 are the prior art, such as a self-sealing ball valve type injection nozzle, and the present application will not be described in detail here.

[0056] It is worth noting that the above-mentioned electrical elements of the present application are powered through the incoming line side busbar, and personalized electrical control can be realized through the control panel 10 according to the actual operation requirements of the grid-connected cabinet.

[0057] In addition, the electrical elements 5 are comprehensively insulated and coated with silicone rubber sheath or epoxy resin spraying to block the risk of short circuit caused by foreign matter invasion or external arc light, thereby further enhancing the ability of the grid-connected cabinet to resist burnout risk and improving its safety performance.

[0058] When the grid-connected cabinet of the present application is in operation: Firstly, the electrical elements 5 of the incoming line cabinet, busbar and outgoing line cabinet can be installed on the first bearing section 26 and the second bearing section 28 in the first bearing part, the second bearing part and the third bearing part according to the arrangement needs by using bolts, and the wires thereof are reasonably arranged through the wire slot 22 and / or the wire section 27; Then, in the running state of the grid-connected cabinet, heat will be generated in part of the cabinet body 1 or the cabinet body 1, which will be monitored by the first temperature sensor 29 and fed back to the control panel 10 to start the several heat dissipation fans in the upper arc section 101 and the lower arc section 102 to form a heat dissipation path from bottom to top, so as to discharge the heat of the cabinet body 1 outward; On this basis, if the heat of the cabinet body 1 is high, the four heat dissipation pipe rows 6 are driven to move to the heat accumulation place along the heat dissipation path by the sliding block 32 and absorb heat, and when the second temperature sensor 36 detects that the temperature of the four heat dissipation pipe rows 6 reaches a specified temperature threshold, the four heat dissipation pipe rows 6 are driven to move upward to the upper arc section 101, heat is dissipated through the flowing gas in the heat dissipation path and the several heat dissipation holes 1011, and when the second temperature sensor 36 detects that the temperature is lower than the specified temperature threshold, the four heat dissipation pipe rows 6 are driven to move to the heat accumulation place again to absorb heat, until the heat dissipation of the cabinet body 1 is completed; At the same time, the electrical elements 5 may generate arc during operation, and the arc can be preliminarily extinguished in the several arc isolation grooves 4 and the insulation layer 21, but if the arc spreads, the spray gun 25 can be started to spray cooling gas to the place where the arc is generated to suppress the arc and ensure the stable operation of the grid-connected cabinet.

[0059] In addition, the arc-shaped baffle 17 can be moved by the four electric push rods 16 to flexibly adjust the distance between the arc-shaped baffle 17 and the upper arc section 101 according to the use requirements of the grid-connected cabinet, so as to achieve better heat dissipation effect.

[0060] The grid-connected cabinet with the burnout prevention structure has the upper arc-shaped section and the lower arc-shaped section and a plurality of heat dissipation fans to realize internal driving heat dissipation, effectively avoids the failure risk of external driving, and through the setting of the support plate with the honeycomb-shaped arranged through hole array, improves the heat dissipation efficiency, and through the setting of a plurality of electric arc isolation grooves and four heat dissipation pipe rows, improves the ability of the grid-connected cabinet to deal with sudden high temperature faults, and effectively prevents the generation and diffusion of electric arc. Therefore, compared with the existing grid-connected cabinet, the present application can significantly reduce the burnout risk of the grid-connected cabinet and improve its safety performance.

[0061] Although one or more embodiments of the present application have been described above, it should be understood by those of ordinary skill in the art that the present application can be implemented in any other form without departing from the spirit and scope of the present application. Therefore, the above-described embodiments are illustrative rather than limiting, and many modifications and substitutions are obvious to those of ordinary skill in the art without departing from the spirit and scope of the present application as defined by the appended claims.

Claims

1. A grid-connected cabinet with a burn-out protection structure, characterized in that: This includes the cabinet itself, as well as the electrical support and heat dissipation pipe assembly installed within the cabinet. The cabinet has an upper arc section and a lower arc section. Several cooling fans are arranged in the upper arc section and the lower arc section along their arc length. The cooling fans can form a heat dissipation path from bottom to top in the cabinet. The electrical support is divided into a first support section, a second support section and a third support section along the heat dissipation path. Each of the three support sections includes a support plate that is horizontally arranged and has a honeycomb array of through holes. The support plate is inclinedly arranged with a support plate. The support plate has a number of mounting holes and a number of arc isolation grooves. The mounting holes are used to install electrical components, and the arc isolation grooves are used to form a blocking path to suppress the arc. The heat dissipation pipe array mechanism includes four heat dissipation pipe arrays arranged in a rectangular shape and configured to reciprocate along the heat dissipation path. Each heat dissipation pipe array is filled with a phase change material that can absorb heat inside the cabinet and dissipate heat at a specified temperature threshold.

2. The grid-connected cabinet with an anti-burnout structure according to claim 1, characterized in that, The cabinet is equipped with a first cabinet door and a second cabinet door, both of which are lockable and used for protection. The first cabinet door is equipped with a control panel for electrically controlling the electrical components and the lock.

3. The grid-connected cabinet with an anti-burnout structure according to claim 2, characterized in that, The cabinet is equipped with two electrical sensors, which are electrically connected to the lock bodies on the first and second cabinet doors, respectively, to control the lock bodies to lock when powered on or release when powered off.

4. The grid-connected cabinet with an anti-burnout structure according to claim 3, characterized in that, Both the upper and lower arc-shaped segments are provided with several through slots along their arc length, and several cooling fans are correspondingly arranged in each through slot.

5. The grid-connected cabinet with an anti-burnout structure according to claim 4, characterized in that, Each arc isolation groove is provided with an insulating layer, which is used to isolate the current to form a blocking path and suppress the arc.

6. The grid-connected cabinet with an anti-burnout structure according to claim 5, characterized in that, Each of the supporting parts also includes an air-cooling assembly, which includes a second drive motor mounted on the support plate, a swing frame connected to the transmission end of the second drive motor, and a spray gun connected to the swing frame. The spray gun is used to spray cooling gas onto the supporting plate to dissipate heat from it.

7. The grid-connected cabinet with an anti-burnout structure according to claim 6, characterized in that, The support plate is divided into a first support section, a wiring section and a second support section from top to bottom. The first support section and the second support section are provided with a number of mounting holes and a number of arc isolation grooves. The wiring section is used for wiring electrical components on the first support section and the second support section.

8. The grid-connected cabinet with an anti-burnout structure according to claim 7, characterized in that, Both the first and second bearing sections are equipped with a first temperature sensor for monitoring the temperature thereon.

9. The grid-connected cabinet with an anti-burnout structure according to claim 8, characterized in that, The heat dissipation pipe array mechanism also includes two drive components symmetrically arranged on the two side walls of the cabinet. Each drive component includes a support slide rail and two guide slide rails arranged on both sides of the support slide rail. A slider is connected to the support slide rail and the two guide slide rails. Two support plates are symmetrically arranged on the slider. A support cylinder is provided at the upper end of each support plate. Both ends of the four heat dissipation pipe arrays are connected to the support cylinders so that when the slider moves along the support slide rail, it can drive the four heat dissipation pipe arrays to reciprocate along the heat dissipation path.

10. The grid-connected cabinet with an anti-burnout structure according to claim 9, characterized in that, The slider is equipped with a second temperature sensor for monitoring the temperature of the four heat sinks.

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