High voltage switchgear

Abstract

The present application relates to the technical field of high-voltage switch cabinets, and in particular to a high-voltage switch cabinet, comprising a cabinet body, a switch cabinet door, working components arranged in the cabinet body, and an arc isolation chamber, wherein an air inlet pipe and an air outlet pipe are respectively arranged on the two side walls of the cabinet body in the width direction, a heat dissipation mechanism is arranged in the cabinet body, and a cooling mechanism for absorbing heat is arranged at one end of the air outlet pipe away from the cabinet body; the present application sends outside air into the cabinet body through an exhaust fan, sends the heat in the cabinet body out of the cabinet body through the air outlet pipe, sucks the coolant into a spiral cavity through a circulating pump, and then controls the air flow in the air outlet pipe through a control valve, and the coolant exchanges heat with the coolant in the spiral cavity from bottom to top, and cools the hot air in the air outlet pipe, so as to avoid the situation where the air sends the heat in the box to the outside under the condition of limited space at the installation site, resulting in a high local temperature around the box body, thereby ensuring the subsequent normal heat dissipation of the cabinet body.

Description

Technical Field

[0001] The present application relates to the field of high-voltage switchgear, and in particular to a high-voltage switchgear. Background Art

[0002] High-voltage switchgear refers to the switchgear used for power generation, transmission, distribution, power conversion and consumption in the power system, and plays the role of switching, control or protection. It mainly includes high-voltage disconnectors and grounding switches, high-voltage load switches, high-voltage automatic reclosers and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof distribution devices and high-voltage switchgear. If the ambient temperature is too high, the conductivity of the metal will decrease, the resistance will increase, and the surface oxidation will intensify; on the other hand, too high a temperature will also greatly shorten the life of the insulation parts in the cabinet and reduce the insulation strength;

[0003] Referring to the Chinese patent application with publication number CN112542776A, a new type of high-voltage switch cabinet heat dissipation auxiliary equipment is disclosed, in which the air storage box sprays air upward, and the sprayed cold air dissipates heat to the transformer body, and the heat-dissipated air enters the two sides of the cabinet through the guide plate. When the gas on both sides of the cabinet begins to flow, the air pressure on both sides of the cabinet increases, and the air flow rate increases. At this time, the hot air inside the cabinet will be sucked out of the cabinet, thereby enhancing the heat dissipation effect of the device;

[0004] However, in the existing technology, especially when the installation space is relatively limited, after the heat in the box is sent to the outside, the local temperature around the box is high. Then, through the heat dissipation method of gas flow, the air originally sent to the outside carries heat that has not been cooled down in time, and then enters the box to dissipate heat, which will lead to poor heat dissipation effect. For this reason, we designed a high-voltage switch cabinet. Utility Model Content

[0005] The high-voltage switch cabinet provided in the embodiment of the present application can perform heat exchange between the air that carries away heat and the coolant, thereby avoiding the technical problem that after the hot air in the cabinet is sent to the outside, the local temperature around the cabinet is high due to the limited space of the installation site, thus affecting the subsequent heat dissipation.

[0006] The embodiment of the present application provides a high-voltage switch cabinet, including a cabinet, a switch cabinet door, working components arranged in the cabinet, and an arc isolation chamber, the cabinet is provided with an air inlet pipe and an air outlet pipe on both side walls along the width direction, the air inlet pipe and the air outlet pipe are both connected to the inside of the cabinet, the air inlet pipe and the air outlet pipe are both provided with a control valve, a heat dissipation mechanism is provided in the cabinet, the heat dissipation mechanism includes an exhaust fan for taking away heat generated by the working components in the cabinet, and a cooling mechanism for absorbing heat is provided at one end of the air outlet pipe away from the cabinet;

[0007] First, the infrared thermal image of the switch cabinet is captured by a thermal imaging dual-spectrum card camera, and the temperature inside the cabinet is monitored in real time. The temperature information monitored by the thermal imaging dual-spectrum card camera is fed back to the control board. When the cabinet has a local high temperature, the control board controls the control valves on the air inlet and outlet ducts to open, and then controls the wind direction of the exhaust fan to adjust to the position where the local temperature is higher in the cabinet to perform preferential heat dissipation. The outside air is sent into the cabinet through the exhaust fan, and the heat in the cabinet is brought to the air outside the cabinet. The coolant is sucked into the spiral cavity by a circulating pump. During this period, the air flow in the outlet duct can be controlled by the control valve, and the coolant exchanges heat with the coolant in the spiral cavity from bottom to top to cool the hot air in the outlet duct. The coolant after absorbing the hot air enters the coolant tank through the return pipe.

[0008] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0009] 1. This application uses an exhaust fan to send outside air into the cabinet, brings the heat in the cabinet to the air outside the cabinet, draws coolant into the spiral cavity through a circulating pump, and then controls the air flow in the air outlet duct through a control valve. The coolant exchanges heat with the coolant in the spiral cavity from bottom to top, and cools the hot air in the air outlet duct, avoiding the situation where the air sends the heat in the box to the outside under the condition of limited space in the installation site, causing the local temperature around the cabinet to be high, thereby ensuring the subsequent normal heat dissipation of the cabinet.

[0010] 2. This application uses a thermal imaging dual-spectrum card-type camera to capture infrared thermal images inside the switch cabinet, monitor the temperature inside the cabinet in real time, and then the control panel controls the rotation of the exhaust fan. The exhaust fan rotates to send outside air into the cabinet to remove the heat generated by the working components in the cabinet, avoiding the burning of the working components due to overheating due to untimely detection and processing, thereby ensuring the normal working environment of the working components in the cabinet.

[0011] In some embodiments, the heat dissipation mechanism further comprises:

[0012] A group of air guide covers, each of which is arranged on the inner wall of the cabinet, and each of which is connected to the air inlet pipe and the air outlet pipe, and the exhaust fan is coaxially arranged in the air guide cover;

[0013] The filter screen is installed, and the filter screen is coaxially arranged on the inner wall of the air inlet pipe.

[0014] In some embodiments, the cooling mechanism comprises:

[0015] The cooling liquid tank, the air outlet pipe is arranged in a "Z" shape, a spiral cavity is arranged in the pipe wall of the air outlet pipe, the end of the air outlet pipe away from the cabinet body passes through the cooling liquid tank, and a cold liquid cavity and a return liquid cavity are arranged in the cooling liquid tank;

[0016] A circulating pump, wherein the circulating pump is fixedly mounted on the coolant tank, a suction pipe is provided at one end of the circulating pump, and a liquid infusion pipe is provided at the other end, the suction pipe is communicated with the cold liquid chamber of the coolant tank, the liquid infusion pipe is communicated with one end of the spiral chamber, a return pipe is provided at one end of the spiral chamber away from the liquid infusion pipe, and the return pipe is communicated with the return liquid chamber of the coolant tank.

[0017] In some embodiments, a thermal imaging dual-spectrum card-type camera is provided in the cabinet, the exhaust fan is coaxially arranged with the air inlet duct, and an adjustment mechanism is provided on the outside of the exhaust fan.

[0018] In some embodiments, the adjustment mechanism comprises:

[0019] A fixed ring and a rotating ring, wherein the fixed ring is coaxially arranged on the inner wall of the air deflector, and the rotating ring is coaxially arranged inside the fixed ring. A pair of rotating shafts are symmetrically arranged on the fixed ring, and the pair of rotating shafts are fixedly connected to the rotating ring;

[0020] The steering gear is fixedly mounted on the inner wall of the cabinet, and the output end of the steering gear is coaxially fixedly connected to one of the rotating shafts.

[0021] In some embodiments, a control panel is provided on the cabinet, and the control panel is respectively connected to the thermal imaging dual-spectrum card camera, the control valve, the circulation pump, the steering gear and the exhaust fan by electrical signals.

[0022] In some embodiments, a plurality of supporting legs are provided at the bottom of the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 A schematic diagram of the structure of a high-voltage switchgear provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the installation structure of the internal working components of the high-voltage switchgear provided in an embodiment of the present application;

[0026] Figure 3 A left and right isometric schematic diagram of a high-voltage switchgear provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of a heat dissipation mechanism of a high-voltage switchgear provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of a cooling mechanism for a high-voltage switchgear provided in an embodiment of the present application;

[0029] Figure 6 A schematic diagram of the internal structure of the cooling mechanism of the high-voltage switchgear provided in an embodiment of the present application.

[0030] Among them, the figure marks in the figure are: 1. cabinet body; 2. switch cabinet door; 3. air inlet pipe; 4. air outlet pipe; 5. control valve; 6. installation filter; 7. coolant tank; 8. spiral chamber; 9. circulation pump; 10. suction pipe; 11. return pipe; 12. deflector; 13. exhaust fan; 14. support tripod; 15. working components; 16. arc isolation chamber. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] In this application, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0037] It should be noted that, in the present application, words such as "in the present embodiment", "exemplarily", "for example", etc. are used to indicate examples, illustrations or explanations. Any embodiment or design described in the present application as "in the present embodiment", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in the present embodiment", "exemplarily", "for example", etc. is intended to present related concepts in a concrete way, meaning that specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the above words in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0038] High-voltage switchgear refers to the equipment used for switching, controlling or protecting in power generation, transmission, distribution, energy conversion and consumption in power systems. It mainly includes high-voltage disconnectors and earthing switches, high-voltage load switches, high-voltage automatic reclosing and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof distribution devices and high-voltage switchgear.

[0039] A new type of high-voltage switch cabinet heat dissipation auxiliary equipment in the related technology, the air storage box sprays air upward, and the sprayed cold air dissipates the heat of the transformer body. The dissipated air enters the two sides of the cabinet through the guide plate. When the gas on both sides of the cabinet begins to flow, the air pressure on both sides of the cabinet increases and the air flow rate increases. At this time, the hot air inside the cabinet will be sucked out of the cabinet, enhancing the heat dissipation effect of the device.

[0040] Based on this, in order to improve the problem in related technologies, especially under conditions where the installation space is relatively limited, after the heat in the box is sent to the outside, the local temperature around the box is relatively high, and then the heat dissipation is dissipated through gas flow. The air originally sent to the outside carries heat that has not been cooled down in time, and then enters the box to dissipate heat, which will lead to poor heat dissipation effect. The embodiments of the present application provide the following solutions.

[0041] See also Figures 1 to 6 The high-voltage switch cabinet includes a cabinet body 1, a switch cabinet door 2, working components 15 and an arc isolation chamber 16 arranged in the cabinet body 1, and an air inlet pipe 3 and an air outlet pipe 4 are respectively arranged on the two side walls of the cabinet body 1 in the width direction, and the air inlet pipe 3 and the air outlet pipe 4 are both connected to the inside of the cabinet body 1, and the air inlet pipe 3 and the air outlet pipe 4 are both provided with a control valve 5;

[0042] The effect of such arrangement is that both the air inlet duct 3 and the air outlet duct 4 are connected to the interior of the cabinet 1. When the exhaust fan 13 in the air inlet duct 3 is working, an air flow path is formed in the cabinet 1, and the heat generated by the working components 15 in the cabinet 1 is sent to the outside through the air outlet duct 4, thereby ensuring a normal working environment for the working components 15 in the cabinet 1.

[0043] See also Figure 4 A heat dissipation mechanism is provided in the cabinet 1, and the heat dissipation mechanism is used to take away the heat generated by the working components 15 in the cabinet 1, so as to avoid the working components 15 from being burned due to overheating due to untimely detection and processing;

[0044] The heat dissipation mechanism includes an exhaust fan 13, and the heat dissipation mechanism also includes a group of air guide covers 12 and an installation filter 6. The group of air guide covers 12 are respectively arranged on the inner wall of the cabinet 1, and the group of air guide covers 12 are respectively connected to the air inlet pipe 3 and the air outlet pipe 4. The exhaust fan 13 is coaxially arranged in the air guide cover 12, and the installation filter 6 is coaxially arranged on the inner wall of the air inlet pipe 3;

[0045] The effect of such a setting is that the outside air is sent into the cabinet 1 through the exhaust fan 13, and the heat in the cabinet 1 is brought to the air outside the cabinet 1, wherein the outside air is filtered by the installed filter 6 at the end of the air inlet pipe 3, and dust or impurities in the air are filtered to prevent dust or impurities in the air from entering the cabinet 1 and adhering to the working components 15, thereby affecting the heat dissipation of the working components 15. Furthermore, the filter 6 is installed with threads on the air inlet pipe 3, which is convenient for replacing the installed filter 6.

[0046] See also Figure 5 and Figure 6 , a cooling mechanism for absorbing heat is provided at one end of the air outlet pipe 4 away from the cabinet 1, so as to avoid a high local temperature around the cabinet 1, which makes it difficult to ensure the subsequent normal heat dissipation inside the cabinet 1;

[0047] The cooling mechanism includes a coolant tank 7 and a circulating pump 9. The air outlet pipe 4 is arranged in a "Z" shape. A spiral cavity 8 is arranged in the pipe wall of the air outlet pipe 4. The end of the air outlet pipe 4 away from the cabinet 1 passes through the coolant tank 7. The coolant tank 7 is provided with a cold liquid cavity and a return liquid cavity. The circulating pump 9 is fixedly installed on the coolant tank 7. A suction pipe 10 is arranged at one end of the circulating pump 9, and a liquid infusion pipe is arranged at the other end. The suction pipe 10 is connected to the cold liquid cavity of the coolant tank 7, and the liquid infusion pipe is connected to one end of the spiral cavity 8. A return liquid pipe 11 is arranged at the end of the spiral cavity 8 away from the liquid infusion pipe, and the return liquid pipe 11 is connected to the return liquid cavity of the coolant tank 7.

[0048] The effect of this arrangement is that when the circulating air brings the heat in the cabinet 1 to the air outlet duct 4, the coolant is sucked into the spiral cavity 8 through the circulation pump 9. During this period, the air flow in the air outlet duct 4 can be controlled by the control valve 5. The coolant exchanges heat with the coolant in the spiral cavity 8 from bottom to top, and the hot air in the air outlet duct 4 is cooled. The coolant after absorbing the hot air enters the coolant tank 7 through the return pipe 11. Furthermore, a partition is provided in the coolant tank 7 to divide the coolant tank 7 into a cold liquid chamber and a return liquid chamber.

[0049] See also Figure 2 A thermal imaging dual-spectrum card-type camera is arranged in the cabinet 1, and an exhaust fan 13 is coaxially arranged with the air inlet pipe 3. An adjusting mechanism is arranged outside the exhaust fan 13, and the adjusting mechanism includes a fixed ring, a rotating ring and a steering gear. The fixed ring is coaxially arranged on the inner wall of the air guide cover 12, and the rotating ring is coaxially arranged in the fixed ring. A pair of rotating shafts are symmetrically arranged on the fixed ring, and the pair of rotating shafts are fixedly connected to the rotating ring. The steering gear is fixedly installed on the inner wall of the cabinet 1, and the output end of the steering gear is coaxially fixedly connected to one of the rotating shafts. A control panel is arranged on the cabinet 1, and the control panel is respectively connected to the thermal imaging dual-spectrum card-type camera, the control valve 5, the circulating pump 9, the steering gear and the exhaust fan 13 with electrical signals;

[0050] The effect of such a setting is that the infrared thermal image inside the switch cabinet body 1 is captured by the thermal imaging dual-spectrum card-type camera, the temperature inside the cabinet body 1 is monitored in real time, and the temperature information monitored by the thermal imaging dual-spectrum card-type camera is fed back to the control board. When the cabinet body 1 has a locally high temperature, the control board controls the wind direction of the exhaust fan 13 to adjust to the position where the local temperature is higher in the cabinet body 1, so as to give priority to heat dissipation. The operation is simple and convenient, and the heat dissipation is accurate and fast.

[0051] See also Figure 1 and Figure 2 A plurality of support legs 14 are provided at the bottom of the cabinet 1 to provide stable support for the cabinet 1 .

[0052] From the above, we can see that the working principle of this application is as follows:

[0053] The thermal imaging dual-spectrum card-type camera captures the infrared thermal image inside the switch cabinet 1, monitors the temperature inside the cabinet 1 in real time, and feeds back the temperature information monitored by the thermal imaging dual-spectrum card-type camera to the control board. When the cabinet 1 has a high temperature locally, the control board controls the control valve 5 on the air inlet pipe 3 and the air outlet pipe 4 to open;

[0054] The control panel then controls the wind direction of the exhaust fan 13 to adjust to the position where the local temperature is higher in the cabinet 1 to perform priority heat dissipation, and the outside air is sent into the cabinet 1 through the exhaust fan 13. The circulating air brings the heat in the cabinet 1 to the air outlet pipe 4, and the coolant is sucked by the circulating pump 9 to the spiral cavity 8. During this period, the air flow in the air outlet pipe 4 can be controlled by the control valve 5. The coolant exchanges heat with the coolant in the spiral cavity 8 from bottom to top, and the hot air in the air outlet pipe 4 is cooled. The coolant after absorbing the hot air enters the coolant tank 7 through the return pipe 11.

[0055] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A high-voltage switch cabinet, comprising a cabinet body (1), a switch cabinet door (2), working components (15) arranged in the cabinet body (1) and an arc isolation chamber (16), characterized in that: An air inlet pipe (3) and an air outlet pipe (4) are respectively provided on the two side walls of the cabinet (1) in the width direction; the air inlet pipe (3) and the air outlet pipe (4) are both connected to the interior of the cabinet (1); control valves (5) are provided on the air inlet pipe (3) and the air outlet pipe (4); a heat dissipation mechanism is provided in the cabinet (1); the heat dissipation mechanism comprises an exhaust fan (13) for taking away heat generated by working components (15) in the cabinet (1); and a cooling mechanism for absorbing heat is provided at one end of the air outlet pipe (4) away from the cabinet (1).

2. The high voltage switch cabinet according to claim 1, characterized in that: The heat dissipation mechanism also includes: A group of air guide covers (12), wherein the group of air guide covers (12) are respectively arranged on the inner wall of the cabinet (1), and the group of air guide covers (12) are respectively connected to the air inlet pipe (3) and the air outlet pipe (4), and the exhaust fan (13) is coaxially arranged in the air guide cover (12); A filter screen (6) is installed, wherein the filter screen (6) is coaxially arranged on the inner wall of the air inlet pipe (3).

3. The high voltage switch cabinet according to claim 1, characterized in that: The cooling mechanism comprises: A cooling liquid tank (7), wherein the air outlet pipe (4) is arranged in a "Z" shape, a spiral cavity (8) is arranged in the wall of the air outlet pipe (4), and an end of the air outlet pipe (4) away from the cabinet (1) passes through the cooling liquid tank (7), and a cold liquid cavity and a return liquid cavity are arranged in the cooling liquid tank (7); A circulation pump (9), wherein the circulation pump (9) is fixedly mounted on a cooling liquid tank (7), wherein a suction pipe (10) is provided at one end of the circulation pump (9), and a liquid infusion pipe is provided at the other end, wherein the suction pipe (10) is connected to a cooling liquid chamber of the cooling liquid tank (7), wherein the liquid infusion pipe is connected to one end of a spiral chamber (8), wherein a liquid return pipe (11) is provided at one end of the spiral chamber (8) away from the liquid infusion pipe, wherein the liquid return pipe (11) is connected to the liquid return chamber of the cooling liquid tank (7).

4. The high voltage switch cabinet according to claim 3, characterized in that: A thermal imaging dual-spectrum card-type camera is arranged in the cabinet (1); the exhaust fan (13) is coaxially arranged with the air inlet pipe (3); and an adjustment mechanism is arranged on the outside of the exhaust fan (13).

5. The high voltage switch cabinet according to claim 4, characterized in that: The regulating mechanism comprises: A fixed ring and a rotating ring, wherein the fixed ring is coaxially arranged on the inner wall of the air guide cover (12), and the rotating ring is coaxially arranged inside the fixed ring. A pair of rotating shafts are symmetrically arranged on the fixed ring, and the pair of rotating shafts are both fixedly connected to the rotating ring; A steering gear is fixedly mounted on the inner wall of the cabinet (1), and an output end of the steering gear is coaxially fixedly connected to one of the rotating shafts.

6. The high voltage switch cabinet according to claim 5, characterized in that: The cabinet (1) is provided with a control panel, and the control panel is respectively connected to the thermal imaging dual-spectrum card-type camera, the control valve (5), the circulation pump (9), the steering gear and the exhaust fan (13) via electrical signals.

7. The high voltage switch cabinet according to claim 1, characterized in that: The bottom of the cabinet (1) is provided with a plurality of supporting legs (14).

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