A gas insulated switchgear with a cooling structure

Abstract

The utility model discloses a kind of gas-insulated switchgear with cooling structure, it is related to gas-insulated switchgear technical field, including switch cabinet, the switch opening of switch cabinet is connected with sealing door, heat-absorbing metal frame is fixed on the inner wall of switch cabinet, protective cabinet is fixed on the outer wall side of switch cabinet, heat-conducting metal plate is installed in protective cabinet, it is connected between heat-absorbing metal frame and heat-conducting metal plate by heat transfer metal block;Multiple heat dissipation holes are equipped on the side wall of protective cabinet, heat dissipation fan is also connected on protective cabinet, heat dissipation fan can blow outside air into protective cabinet. The utility model utilizes heat-absorbing metal frame, heat transfer metal block and heat-conducting metal plate can effectively import the heat in switch cabinet into protective cabinet, then utilize heat dissipation fan to blow out hot air in protective cabinet through heat dissipation hole, to play the role of heat dissipation, cooling to switch cabinet.

Description

Technical Field

[0001] This utility model relates to the field of gas-insulated switchgear technology, and in particular to a gas-insulated switchgear with a cooling structure. Background Technology

[0002] Gas-insulated switchgear, also known as cabinet-type gas-insulated metal-enclosed switchgear, is a medium- and high-voltage electrical equipment that uses SF6, N2, mixed gases, or dry air as the insulating medium. It is mainly used in voltage levels of 35kV and below, covering urban power grids, rail transit, industrial and mining enterprises, and other scenarios. Its primary components such as busbars, circuit breakers, and disconnectors are integrated into a metal grounded enclosure. It adopts vacuum or SF6 arc extinguishing technology and has intelligent control and monitoring functions.

[0003] Because existing gas-insulated switchgear has a closed structure, and the primary components of gas-insulated switchgear generate a lot of heat during operation, this heat is contained within the metal grounded casing. In a closed environment, the heat is not easily dissipated, and prolonged exposure to high temperatures will have an adverse effect on the operation of electrical components.

[0004] Therefore, there is an urgent need in this field for a gas-insulated switchgear with a cooling structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a gas-insulated switchgear with a cooling structure to solve the problems existing in the prior art and to effectively dissipate heat and cool the switchgear.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model discloses a gas-insulated switchgear with a cooling structure, including a switch cabinet. A sealing door is connected to the switch opening of the switch cabinet. A heat-absorbing metal frame is fixed on the inner wall of the switch cabinet. A protective cabinet is fixed on one side of the outer wall of the switch cabinet. A heat-conducting metal plate is installed inside the protective cabinet. The heat-absorbing metal frame and the heat-conducting metal plate are connected by a heat-transferring metal block.

[0008] The protective cabinet has multiple heat dissipation holes on its side wall and is also connected to a cooling fan that can blow outside air into the protective cabinet.

[0009] Preferably, the heat-conducting metal plate is located inside the protective cabinet on the side close to the switch cabinet.

[0010] Preferably, the heat-absorbing metal frame, the heat-conducting metal plate, and the heat-transferring metal block are all made of stainless steel.

[0011] Preferably, a gas distribution box is fixedly installed on the lower inner surface of the protective cabinet. The top of the gas distribution box has multiple air blowing holes, and the bottom of the gas distribution box is connected to the air outlet of the cooling fan through a ventilation pipe.

[0012] Preferably, the switch cabinet is equipped with a temperature sensor, and both the temperature sensor and the cooling fan are electrically connected to the controller.

[0013] Preferably, heat dissipation fins are installed on the thermally conductive metal plate.

[0014] Preferably, a positioning frame is provided on each of the opposite sides of the protective cabinet, a protective net is installed on each positioning frame, and a plurality of heat dissipation holes are provided on each protective net.

[0015] Preferably, the positioning frame is provided with a positioning groove, and the protective net is provided with a positioning protrusion, the positioning protrusion engaging with the positioning groove.

[0016] Preferably, when there are two or more switch cabinets, adjacent switch cabinets are connected by a connecting device.

[0017] Preferably, the connecting device includes a right splicing block and a left splicing block. The right splicing block is provided with a splicing groove. The left splicing block on one of the switch cabinets can be inserted into the splicing groove on the adjacent switch cabinet. The right splicing block and the left splicing block are fixedly connected by locking studs.

[0018] The present invention achieves the following technical advantages over the prior art:

[0019] This invention uses a heat-absorbing metal frame and a heat-transferring metal block in combination to absorb and transfer the heat generated by the operation of primary components inside the switch cabinet. The heat is transferred from the inside of the switch cabinet to the heat-conducting metal plate on the outside, thereby accelerating heat dissipation. The heat-conducting metal plate increases the heat dissipation area, which plays a role in cooling and protecting the switch cabinet. At the same time, a cooling fan can be used to blow outside air into the protective cabinet, blowing the high-temperature gas inside the protective cabinet out through the heat dissipation holes, accelerating the air flow and accelerating heat dissipation, effectively improving the heat dissipation effect.

[0020] Furthermore, this invention utilizes a temperature sensor to monitor the internal temperature environment of the switch cabinet and controls the cooling fan according to the temperature change range to prevent the cooling fan from running continuously when the temperature is low, thus avoiding energy waste.

[0021] Furthermore, this utility model includes a right splicing block, a splicing groove, a locking stud, and a left splicing block. Each switch cabinet has a right splicing block and a left splicing block on each side. Through the cooperation of the right and left splicing blocks, the connectivity between adjacent switch cabinets is improved, and a certain positioning function is played, making the adjacent switch cabinets more neat after splicing. The right and left splicing blocks can be locked and fixed by using the locking stud, which improves the stability of the splicing.

[0022] Furthermore, this utility model is equipped with a positioning frame, a protective net, and positioning protrusions. The positioning frame and the protective net are attached to the side of the protective cabinet, so that the heat dissipation fins are not directly exposed to the external environment. This prevents them from absorbing heat for a long time and getting high temperatures, which could easily cause burns if accidentally touched. It also maintains the overall integrity of the equipment, makes it more aesthetically pleasing, and does not affect the normal gas flow. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the external structure of a gas-insulated switchgear with a cooling structure according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram showing the installation position of the cooling fan in a gas-insulated switchgear with a cooling structure according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram showing the installation position of the heat-conducting metal plate in a gas-insulated switchgear with a cooling structure according to an embodiment of this utility model.

[0027] Figure 4 This is a schematic diagram showing the installation position of the heat transfer metal block in a gas-insulated switchgear with a cooling structure according to an embodiment of this utility model.

[0028] In the diagram: 1-Switch cabinet; 2-Sealed door; 3-Heat-absorbing metal frame; 4-Heat-transfer metal block; 5-Protective cabinet; 6-Heat-conducting metal plate; 7-Heat dissipation fins; 8-Gas distribution box; 9-Air blowing hole; 10-Heat dissipation fan; 11-Temperature sensor; 12-Right splicing block; 13-Splicing groove; 14-Locking stud; 15-Operating knob; 16-Left splicing block; 17-Splicing screw hole; 18-Positioning frame; 19-Protective net; 20-Positioning protrusion; 21-Primary component. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] The purpose of this invention is to provide a gas-insulated switchgear with a cooling structure to solve the problems existing in the prior art and to effectively dissipate heat and cool the switchgear.

[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] like Figures 1-4 As shown, this embodiment provides a gas-insulated switchgear with a cooling structure, including a switch cabinet 1. The switch cabinet 1 is a rectangular cabinet structure. A sealing door 2 is hinged to the switch opening of the switch cabinet 1. Existing primary components 21 are installed inside the switch cabinet 1. Heat-absorbing metal frames 3 are fixed on each inner wall of the switch cabinet 1, and a protective cabinet 5 is fixed to one side of the outer wall of the switch cabinet 1. The protective cabinet 5 can be integrally formed with the switch cabinet 1, or it can be fixed by welding or bolts. A heat-conducting metal plate 6 is installed inside the protective cabinet 5. The heat-absorbing metal frame 3 and the heat-conducting metal plate 6 are connected by a heat-transfer metal block 4. That is, after the heat-absorbing metal frame 3 absorbs part of the heat in the switch cabinet 1, it transfers the heat to the heat-conducting metal plate 6 through the heat-transfer metal block 4. It should be noted that the heat transfer metal block 4 will pass through the side walls of switch cabinet 1 and protective cabinet 5. Therefore, the side walls of switch cabinet 1 and protective cabinet 5 must be provided with through holes for the heat transfer metal block 4 to pass through. Therefore, during the installation process, attention should be paid to the sealing between the heat transfer metal block 4 and the through holes. If possible, sealing rings or other components that improve the sealing performance can be installed at the through holes.

[0033] The protective cabinet 5 has multiple heat dissipation holes on its side wall, and a cooling fan 10 is also connected to the protective cabinet 5. The cooling fan 10 can blow outside air into the protective cabinet 5.

[0034] In actual use, as the primary components 21 inside the switch cabinet 1 operate, they release heat. Some of this heat is absorbed by the heat-absorbing metal frame 3, which then transfers the heat to the heat-conducting metal plate 6 via the heat-transferring metal block 4. The heat-conducting metal plate 6 then releases the heat into the protective cabinet 5, thus cooling the switch cabinet 1. At this time, the cooling fan 10 is activated, blowing cool outside air into the protective cabinet 5, thereby expelling the hot air inside the protective cabinet 5 through the ventilation holes, thus cooling the protective cabinet 5.

[0035] In this embodiment, from Figure 3 As can be seen, the heat-conducting metal plate 6 is located inside the protective cabinet 5 on the side close to the switch cabinet 1, and from... Figure 4 As can be seen, there are multiple heat transfer metal blocks 4, and each heat transfer metal block 4 is located on the inner wall of the switch cabinet 1 near the protective cabinet 5. This will greatly reduce the design size of the heat transfer metal block 4, and the shorter distance can also effectively improve the heat transfer efficiency.

[0036] In this embodiment, the heat-absorbing metal frame 3, the heat-conducting metal plate 6, and the heat-transferring metal block 4 are all made of stainless steel with good thermal conductivity. Of course, those skilled in the art can use other heat-conducting materials, and are not limited to this one.

[0037] In this embodiment, a rectangular gas distribution box 8 is fixedly installed on the lower inner surface of the protective cabinet 5. The top of the gas distribution box 8 has a rectangular array of multiple air blowing holes 9. The bottom of the gas distribution box 8 is connected to the air outlet of the cooling fan 10 via a ventilation pipe. The cooling fan 10 is installed on the lower outer surface of the protective cabinet 5, and the ventilation pipe passes through the bottom of the protective cabinet 5 and connects to the air outlet of the cooling fan 10. The advantage of this arrangement is that when the cooling fan 10 blows outside cold air into the protective cabinet 5 through the ventilation pipe, it first enters the gas distribution box 8. The gas distribution box 8 disperses the outside air, allowing it to enter the interior of the protective cabinet 5 through the various air blowing holes 9, thus blowing it in all directions within the protective cabinet 5, thereby further increasing the heat dissipation and cooling area.

[0038] In this embodiment, a temperature sensor 11 is installed inside the switch cabinet 1. Both the temperature sensor 11 and the cooling fan 10 are electrically connected to a controller, which can be an existing temperature controller, PLC controller, or microcontroller controller. In actual use, the temperature sensor 11 is used to detect the internal temperature of the switch cabinet 1 in real time. When the internal temperature of the switch cabinet 1 is too high, it means that the heat dissipation capacity inside the protective cabinet 5 is insufficient. At this time, the controller can start the cooling fan 10 to introduce air into the protective cabinet 5, increasing the airflow inside the protective cabinet 5, thereby blowing out the hot air inside the protective cabinet 5 to achieve the function of heat dissipation and cooling. Of course, if the internal temperature of the switch cabinet 1 is low, it means that the heat dissipation effect inside the protective cabinet 5 is good, so there is no need to turn on the cooling fan 10, thereby reducing energy consumption.

[0039] In this embodiment, heat dissipation fins 7 are installed on the side of the heat-conducting metal plate 6 away from the switch cabinet 1. Since the heat-conducting metal plate 6 itself is a plate structure, its heat dissipation area is relatively large. On this basis, the heat dissipation fins 7 are added to further enhance the heat dissipation efficiency of the heat-conducting metal plate 6, thereby improving the cooling and protection effect of the switch cabinet 1.

[0040] In this embodiment, a positioning frame 18 is provided on each of the opposite sides of the protective cabinet 5. A protective net 19 is installed on each positioning frame 18. The two protective nets 19 are located on both sides of the heat-conducting metal plate 6, and each protective net 19 has multiple heat dissipation holes. The purpose of this arrangement is to prevent the heat dissipation fins 7 from being directly exposed to the external environment, thus preventing them from absorbing heat for a long time and reaching a high temperature, which could easily cause burns if staff accidentally touch them. At the same time, it maintains the overall integrity of the equipment, making it more aesthetically pleasing, and does not affect normal gas flow.

[0041] In this embodiment, to achieve the connection between the positioning frame 18 and the protective net 19, the positioning frame 18 is provided with a positioning groove, and the protective net 19 is provided with a positioning protrusion 20 at a position corresponding to the positioning frame 18, the positioning protrusion 20 engaging with the positioning groove. Of course, other methods can also be used to install the protective net 19, including but not limited to fixing the protective net 19 to the positioning frame 18 with screws.

[0042] In this embodiment, multiple switch cabinets 1 may be needed for actual use, so each switch cabinet 1 needs to be placed end to end. When there are two or more switch cabinets 1, adjacent switch cabinets 1 are connected by a connecting device to improve the connection tightness between switch cabinets 1.

[0043] In this embodiment, the connecting device includes a right splicing block 12 and a left splicing block 16. Each switch cabinet 1 has a right splicing block 12 and a left splicing block 16 on each side, that is, the left splicing block 16 is fixed on the left side of the switch cabinet 1, and the right splicing block 12 is fixed on the right side of the switch cabinet 1. Figure 1 or Figure 4 As can be seen, the right splicing block 12 has a splicing groove 13, and a locking stud 14 is connected to the splicing groove 13. The two sides of the splicing groove 13 have stud through holes through which the locking stud 14 can pass. The left splicing block 16 has a splicing screw hole 17 that can be threadedly connected to the locking stud 14. A left splicing block 16 on a switch cabinet 1 can be inserted into the splicing groove 13 on an adjacent switch cabinet 1. Then, adjacent right splicing blocks 12 and left splicing blocks 16 are sequentially connected by locking studs 14 to achieve a fixed connection between the left splicing block 16 and the right splicing block 12. Furthermore, an operating knob 15 is fixed to one end of the locking stud 14, allowing operators to control the rotation of the locking bolt. The cooperation between the right splicing block 12 and the left splicing block 16 improves the connectivity between adjacent switch cabinets 1 and plays a certain positioning role, making the adjacent switch cabinets 1 more neat after splicing. The right splicing block 12 and the left splicing block 16 can be locked and fixed by using the locking stud 14, which improves the stability of splicing.

[0044] The working process of the gas-insulated switchgear with a cooling structure in this embodiment is as follows:

[0045] First, when installing gas-insulated switchgear, adjacent switchgear 1 are joined together close to each other so that the gas-insulated switchgear in the same group can be arranged together. The left splicing block 16 is aligned with the right splicing block 12 at one end of the adjacent switchgear 1, and the left splicing block 16 is inserted into the splicing groove 13. The locking stud 14 is taken out and inserted into the right splicing block 12 from one end, passing through the splicing screw hole 17. The locking stud 14 is turned by the operating knob 15 to lock and fix the right splicing block 12 and the left splicing block 16. Thus, the adjacent switchgear 1 are positioned and connected, and the arrangement is more neat.

[0046] During operation of the gas-insulated switchgear, the primary components 21 inside the switch cabinet 1 generate a large amount of heat. The heat-absorbing metal frame 3, located inside the switch cabinet 1, absorbs the heat and transfers it from the inside of the switch cabinet 1 to the heat-conducting metal plate 6 on the outside via the heat-transfer metal block 4. The heat dissipation fins 7 increase the heat dissipation area and accelerate heat dissipation. At the same time, the temperature generated by the primary components 21 inside the switch cabinet 1 is monitored by the temperature sensor 11. When the temperature does not exceed a certain standard, the heat can be removed by natural heat dissipation. If the temperature rises to a certain level, the natural heat dissipation efficiency cannot support the cooling effect. The cooling fan 10 is controlled to generate airflow, which is blown onto the heat dissipation fins 7 through the gas distribution box 8 and the air blowing hole 9. By accelerating the airflow, the heat dissipation is accelerated, improving the heat dissipation and cooling effect. The two-stage cooling operation is controlled according to the internal heat temperature of the switch cabinet 1, reducing resource waste.

[0047] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0048] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0050] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this utility model to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.

[0051] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0052] It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0053] It should also be noted that in the embodiments of this application, the same reference numerals are used to denote the same component or the same part.

[0054] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0055] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A gas-insulated switchgear with a cooling structure, comprising a switch cabinet (1), wherein a sealing door (2) is connected to the switch opening of the switch cabinet (1), characterized in that: A heat-absorbing metal frame (3) is fixed on the inner wall of the switch cabinet (1), and a protective cabinet (5) is fixed on one side of the outer wall of the switch cabinet (1). A heat-conducting metal plate (6) is installed inside the protective cabinet (5), and the heat-absorbing metal frame (3) and the heat-conducting metal plate (6) are connected by a heat-transferring metal block (4). The protective cabinet (5) has multiple heat dissipation holes on its side wall and a heat dissipation fan (10) is connected to the protective cabinet (5). The heat dissipation fan (10) can blow outside air into the protective cabinet (5).

2. The gas-insulated switchgear with a cooling structure according to claim 1, characterized in that: The heat-conducting metal plate (6) is located inside the protective cabinet (5) on the side close to the switch cabinet (1).

3. The gas-insulated switchgear with a cooling structure according to claim 1, characterized in that: The heat-absorbing metal frame (3), the heat-conducting metal plate (6), and the heat-transferring metal block (4) are all made of stainless steel.

4. The gas-insulated switchgear with a cooling structure according to claim 1, characterized in that: A gas distribution box (8) is fixedly installed on the lower inner surface of the protective cabinet (5). The top of the gas distribution box (8) is provided with multiple air blowing holes (9). The bottom of the gas distribution box (8) is connected to the air outlet of the cooling fan (10) through a ventilation pipe.

5. The gas-insulated switchgear with a cooling structure according to claim 1, characterized in that: The switch cabinet (1) is equipped with a temperature sensor (11), and both the temperature sensor (11) and the cooling fan (10) are electrically connected to the controller.

6. The gas-insulated switchgear with a cooling structure according to claim 1, characterized in that: Heat dissipation fins (7) are installed on the heat-conducting metal plate (6).

7. The gas-insulated switchgear with a cooling structure according to claim 1, characterized in that: Each of the protective cabinets (5) has a positioning frame (18) on its opposite sides. Each positioning frame (18) is equipped with a protective net (19), and each protective net (19) has multiple heat dissipation holes.

8. The gas-insulated switchgear with a cooling structure according to claim 7, characterized in that: The positioning frame (18) is provided with a positioning groove, and the protective net (19) is provided with a positioning protrusion (20), which engages with the positioning groove.

9. The gas-insulated switchgear with a cooling structure according to claim 1, characterized in that: When there are two or more switch cabinets (1), two adjacent switch cabinets (1) are connected by a connecting device.

10. The gas-insulated switchgear with a cooling structure according to claim 9, characterized in that: The connecting device includes a right splicing block (12) and a left splicing block (16). Each switch cabinet (1) has a right splicing block (12) and a left splicing block (16) on its two sides respectively. The right splicing block (12) is provided with a splicing groove (13). The left splicing block (16) on one switch cabinet (1) can be inserted into the splicing groove (13) on the adjacent switch cabinet (1). The right splicing block (12) and the left splicing block (16) are fixedly connected by locking studs (14).

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