A high and low voltage switchgear temperature abnormality alarm device

Abstract

The invention relates to the technical field of electric power equipment, and in particular to an abnormal temperature alarm device for a high and low voltage power distribution cabinet; a front door is movably connected to a cabinet body and is located on one side of the cabinet body, a back plate is fixedly connected to the cabinet body and is located on a side of the cabinet body away from the front door, a plurality of temperature detectors are respectively fixedly connected to the back plate and are evenly spaced and arranged on the inner side wall of the back plate, a cooling groove is arranged inside the back plate, a coolant is arranged in the cooling groove, a plurality of semiconductor cooling sheets are respectively fixedly connected to the back plate and are evenly spaced and arranged on a side of the back plate away from the temperature detector; the temperature detector is used to detect the temperature of different areas of the cabinet body, and an alarm is issued when the temperature is abnormal, the coolant absorbs the heat of the cabinet body, and when the temperature is abnormal, the semiconductor cooling sheets in the corresponding area are started to accelerate the heat dissipation and prevent the electronic components in the cabinet body from being damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, and in particular to a temperature abnormality alarm device for a high and low voltage distribution cabinet. Background Art

[0002] High-voltage distribution cabinet refers to electrical products with voltage levels of 3.6kV to 550kV, which are used for switching, control or protection in power generation, transmission, distribution, power conversion and consumption of power systems. They mainly include high-voltage circuit breakers, high-voltage disconnectors and grounding switches, high-voltage load switches, high-voltage automatic reclosing and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof distribution devices and high-voltage switch cabinets. When the high-voltage distribution cabinet is in operation, if partial discharge occurs in the equipment inside the cabinet, it will cause abnormal temperature rise at the conductor connection. Since the heating position is hidden, the operating personnel cannot find it in time. This will easily expand the fault, causing the electrical components to break down and burn and affect the adjacent equipment units, causing a vicious power outage accident.

[0003] The current abnormal temperature alarm device can only perform emergency power off of the cabinet and alert staff to handle it when the cabinet temperature is abnormal. However, the heat in the cabinet accumulates in the cabinet for too long, causing aging or even damage to the internal electronic components. Summary of the invention

[0004] The purpose of the present invention is to provide a temperature abnormality alarm device for high and low voltage distribution cabinets, aiming to solve the technical problem that the traditional temperature abnormality alarm device in the prior art can only perform emergency power off of the cabinet and remind the staff to deal with it when the temperature of the cabinet is abnormal, but the heat in the cabinet is accumulated in the cabinet for too long, causing aging or even damage of internal electronic components.

[0005] To achieve the above-mentioned purpose, the present invention provides a temperature abnormality alarm device for a high and low voltage distribution cabinet, the temperature abnormality alarm device for the high and low voltage distribution cabinet comprises a cabinet, a back plate, a front door, a temperature detector and a cooling assembly, the front door is movably connected to the cabinet and is located on one side of the cabinet, the back plate is fixedly connected to the cabinet and is located on a side of the cabinet away from the front door, the number of the temperature detectors is plural, each of the temperature detectors is respectively fixedly connected to the back plate and is evenly spaced on the inner wall of the back plate, the cooling assembly comprises a coolant and a semiconductor refrigeration sheet, a cooling groove is provided inside the back plate, the coolant is provided in the cooling groove, the number of the semiconductor refrigeration sheets is plural, each of the semiconductor refrigeration sheets is respectively fixedly connected to the back plate and is evenly spaced on a side of the back plate away from the temperature detector, the cooling end of each of the semiconductor refrigeration sheets is located inside the cooling groove, and the heat dissipation end of each of the semiconductor refrigeration sheets is located on the outer wall of the back plate.

[0006] A plurality of temperature detectors are used to detect the temperature of different areas of the cabinet and sound an alarm when the temperature is abnormal. The coolant absorbs the heat of the cabinet. When the temperature is abnormal, the semiconductor refrigeration plate in the corresponding area is activated to accelerate the heat dissipation of the area and prevent the electronic components in the cabinet from being damaged.

[0007] Among them, the abnormal temperature alarm device for high and low voltage distribution cabinets also includes a Bluetooth module and a control terminal, each of the temperature detectors is electrically connected to the Bluetooth module, and the Bluetooth module is wirelessly connected to the control terminal.

[0008] The data of the temperature detector is transmitted to the control terminal through the Bluetooth module, and the control terminal judges the data and issues an alarm when the data is abnormal.

[0009] Wherein, the control terminal has a PLC control system and is electrically connected to each of the semiconductor refrigeration plates respectively.

[0010] Automatic control is achieved through a PLC control system, and when the temperature is abnormal, the semiconductor refrigeration plate in the corresponding area is put into operation.

[0011] Among them, the abnormal temperature alarm device of the high and low voltage distribution cabinet also includes a warning light, each of the warning lights is fixedly connected to the corresponding semiconductor refrigeration plate and is respectively located above the corresponding semiconductor refrigeration plate.

[0012] The warning light can be used to determine which area has abnormal temperature, thereby narrowing the scope of maintenance.

[0013] Wherein, the cooling component also includes a fan and a fixing frame, and the number of the fan and the fixing frame is multiple. Each of the fixing frames is fixedly connected to the back plate and is respectively located on one side of the semiconductor refrigeration plate. Each of the fans is fixedly connected to the corresponding fixing frame and is respectively located inside the corresponding fixing frame.

[0014] The fan is used to increase the heat dissipation speed of the heat dissipation end of the semiconductor refrigeration plate.

[0015] Wherein, the cooling assembly further includes an air duct, and the number of the air ducts is multiple, and each of the air ducts is fixedly connected to the corresponding fixing frame and is located on one side of the corresponding fixing frame.

[0016] By arranging the air duct on the side of the fan, the hot air around the semiconductor refrigeration plate enters the air duct and is transferred to the outside, thereby slowing down the temperature rise in the room.

[0017] The present invention provides a temperature abnormality alarm device for high and low voltage distribution cabinets. The temperature of different areas in the cabinet is detected by multiple temperature detectors. The coolant will continue to absorb heat from the inside of the cabinet until the temperature of the coolant is the same as the temperature inside the cabinet. When the temperature detector detects a temperature abnormality, an alarm is issued and the circuit in the cabinet is disconnected, and the corresponding semiconductor refrigeration plate is started. The semiconductor refrigeration plate cools the coolant in the area and allows it to continue to absorb heat, thereby reducing the temperature of the abnormal area, thereby protecting the electronic components. Through the above structure, before the staff handles the temperature abnormality, the cabinet is cooled first to prevent the electronic components from being damaged in a high temperature environment for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a cross-sectional view of a temperature abnormality alarm device for a high and low voltage distribution cabinet provided by the present invention.

[0020] Figure 2 The present invention Figure 1 A magnified view of the local structure at A.

[0021] Figure 3 The present invention Figure 1 A magnified view of the local structure at B.

[0022] Figure 4 This is a distribution diagram of the semiconductor refrigeration sheet provided by the present invention.

[0023] Figure 5 The invention discloses an operation principle diagram of a temperature abnormality alarm device for a high and low voltage power distribution cabinet.

[0024] 1-cabinet, 11-first through hole, 2-back plate, 21-cooling groove, 3-front door, 4-temperature detector, 5-cooling component, 51-cooling liquid, 52-semiconductor refrigeration plate, 53-fan, 54-fixing frame, 55-air duct, 6-Bluetooth module, 7-control terminal, 8-warning light, 9-fire extinguishing component, 91-insulation box, 911-box, 912-insulation film, 913-second through hole, 92-aerosol fire extinguisher, 921-fire extinguisher body, 922-valve, 923-cylinder, 924-push rod. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0027] See also Figures 1 to 5 The present invention provides a temperature abnormality alarm device for a high and low voltage power distribution cabinet, the temperature abnormality alarm device for a high and low voltage power distribution cabinet comprises a cabinet 1, a back plate 2, a front door 3, a temperature detector 4 and a cooling assembly 5, the front door 3 is movably connected to the cabinet 1 and is located on one side of the cabinet 1, the back plate 2 is fixedly connected to the cabinet 1 and is located on a side of the cabinet 1 away from the front door 3, the number of the temperature detectors 4 is plural, each of the temperature detectors 4 is fixedly connected to the back plate 2, and is evenly spaced and arranged on the inner side wall of the back plate 2, the temperature detectors 4 are arranged on the inner side wall of the back plate 2, and the temperature detectors 4 are arranged on the inner side wall of the back plate 2. The cooling assembly 5 includes a coolant 51 and a semiconductor refrigeration sheet 52. A cooling groove 21 is provided inside the back plate 2. The coolant 51 is arranged in the cooling groove 21. There are multiple semiconductor refrigeration sheets 52. Each of the semiconductor refrigeration sheets 52 is fixedly connected to the back plate 2 and is evenly spaced on a side of the back plate 2 away from the temperature detector 4. The cooling end of each of the semiconductor refrigeration sheets 52 is located inside the cooling groove 21, and the heat dissipation end of each of the semiconductor refrigeration sheets 52 is located on the outer wall of the back plate 2.

[0028] In this embodiment, the temperature of different areas in the cabinet 1 is detected by multiple temperature detectors 4, and the coolant 51 will continue to absorb heat from the inside of the cabinet 1 until the coolant 51 has the same temperature as the inside of the cabinet 1. When the temperature detector 4 detects a temperature abnormality, an alarm is issued and the circuit in the cabinet 1 is disconnected, and the corresponding semiconductor refrigeration chip 52 is started. The semiconductor refrigeration chip 52 cools the coolant 51 in the area, allowing it to continue to absorb heat, thereby reducing the temperature of the abnormal area, thereby protecting the electronic components. Through the above structure, before the staff handles the temperature abnormality, the cabinet 1 is cooled first to prevent the electronic components from being damaged by being in a high temperature environment for a long time.

[0029] Furthermore, the abnormal temperature alarm device for the high and low voltage distribution cabinet also includes a Bluetooth module 6 and a control terminal 7, each of the temperature detectors 4 is electrically connected to the Bluetooth module 6, and the Bluetooth module 6 is wirelessly connected to the control terminal 7; the control terminal 7 has a PLC control system, and is electrically connected to each of the semiconductor refrigeration plates 52; the abnormal temperature alarm device for the high and low voltage distribution cabinet also includes a warning light 8, each of the warning lights 8 is fixedly connected to the corresponding semiconductor refrigeration plate 52, and is located above the corresponding semiconductor refrigeration plate 52.

[0030] In this embodiment, the data of the temperature detector 4 is transmitted to the control terminal 7 through the Bluetooth module 6, and the control terminal 7 judges the data and issues an alarm when the data is abnormal. Automatic control is achieved through the PLC control system, and when the temperature is abnormal, the semiconductor refrigeration plate 52 in the corresponding area is operated. The warning light 8 can be used to determine which area has an abnormal temperature, thereby narrowing the scope of maintenance.

[0031] Furthermore, the cooling component 5 also includes a fan 53 and a fixing frame 54, and the number of the fan 53 and the fixing frame 54 is multiple, each of the fixing frames 54 is respectively fixedly connected to the back plate 2 and is respectively located on one side of the semiconductor refrigeration plate 52, and each of the fans 53 is respectively fixedly connected to the corresponding fixing frame 54 and is respectively located inside the corresponding fixing frame 54; the cooling component 5 also includes an air duct 55, and the number of the air duct 55 is multiple, each of the air duct 55 is respectively fixedly connected to the corresponding fixing frame 54 and is respectively located on one side of the corresponding fixing frame 54.

[0032] In this embodiment, the heat dissipation speed of the heat dissipation end of the semiconductor refrigeration plate 52 is increased by the fan 53; the air duct 55 is arranged on the side of the fan 53, so that the hot air around the semiconductor refrigeration plate 52 enters the air duct 55 and is transmitted to the outside, thereby slowing down the temperature rise in the room, thereby improving the heat dissipation of the cabinet 1.

[0033] Furthermore, the abnormal temperature alarm device of the high and low voltage distribution cabinet also includes a fire extinguishing component 9, which includes a heat insulation box 91 and an aerosol fire extinguisher 92. The top of the cabinet body 1 is provided with a first through hole 11, and the heat insulation box 91 is fixedly connected to the cabinet body 1 and is located above the first through hole 11. The aerosol fire extinguisher 92 is fixedly connected to the heat insulation box 91 and is located inside the heat insulation box 91 and above the first through hole 11.

[0034] In this embodiment, when an open fire occurs in the cabinet 1 , the internal temperature of the cabinet 1 rises significantly, and the aerosol fire extinguisher 92 is activated to absorb oxygen inside the cabinet 1 through the released aerosol, thereby extinguishing the open fire inside the cabinet 1 .

[0035] Furthermore, the thermal insulation box 91 includes a box body 911 and a thermal insulation film 912, a second through hole 913 is provided at the bottom of the box body 911, the box body 911 is fixedly connected to the cabinet body 1 and is located above the cabinet body 1, the second through hole 913 is communicated with the first through hole 11, and the thermal insulation film 912 is fixedly connected to the box body 911 and is located inside the second through hole 913.

[0036] In this embodiment, the aerosol fire extinguisher 92 is placed in a closed and temperature-insulated environment by the box body 911 and the thermal insulation film 912. When the aerosol fire extinguisher 92 is started, the generated pressure will break the thermal insulation film 912, and the aerosol enters the cabinet body 1 from the first through hole 11 and the second through hole 913.

[0037] Furthermore, the aerosol fire extinguisher 92 includes a fire extinguisher body 921, a valve 922, a cylinder 923 and a push rod 924. The fire extinguisher body 921 is fixedly connected to the box body 911 and is located inside the box body 911. The valve 922 is fixedly connected to the fire extinguisher body 921 and is located below the fire extinguisher. The cylinder 923 is fixedly connected to the box body 911 and is located outside the box body 911. The push rod 924 is movably connected to the cylinder 923 and is located inside the box body 911 and on the side of the valve 922.

[0038] In this embodiment, when the temperature detector 4 detects an open flame, the cylinder 923 is activated, the cylinder 923 pushes the push rod 924, and the push rod 924 pushes open the valve 922, thereby activating the fire extinguisher body 921.

[0039] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A high and low voltage distribution cabinet temperature abnormality alarm device, characterized in that: The abnormal temperature alarm device of the high and low voltage power distribution cabinet comprises a cabinet body, a back plate, a front door, a temperature detector and a cooling assembly, wherein the front door is movably connected to the cabinet body and is located at one side of the cabinet body, the back plate is fixedly connected to the cabinet body and is located at a side of the cabinet body away from the front door, the number of the temperature detectors is plural, each of the temperature detectors is respectively fixedly connected to the back plate and is evenly spaced and arranged on the inner side wall of the back plate, the cooling assembly comprises a coolant and a semiconductor refrigeration sheet, a cooling groove is arranged inside the back plate, the coolant is arranged in the cooling groove, the number of the semiconductor refrigeration sheets is plural, each of the semiconductor refrigeration sheets is respectively fixedly connected to the back plate and is evenly spaced and arranged on a side of the back plate away from the temperature detector, the cooling end of each of the semiconductor refrigeration sheets is located inside the cooling groove, and the heat dissipation end of each of the semiconductor refrigeration sheets is located on the outer side wall of the back plate; The abnormal temperature alarm device of the high and low voltage distribution cabinet also includes a fire extinguishing assembly, which includes a heat insulation box and an aerosol fire extinguisher. The top of the cabinet is provided with a first through hole. The heat insulation box is fixedly connected to the cabinet and is located above the first through hole. The aerosol fire extinguisher is fixedly connected to the heat insulation box and is located inside the heat insulation box and above the first through hole. The heat-insulating box comprises a box body and a heat-insulating film, a second through hole is provided at the bottom of the box body, the box body is fixedly connected to the cabinet body and is located above the cabinet body, the second through hole is communicated with the first through hole, and the heat-insulating film is fixedly connected to the box body and is located inside the second through hole; The aerosol fire extinguisher comprises a fire extinguisher body, a valve, a cylinder and a push rod, wherein the fire extinguisher body is fixedly connected to the box body and is located inside the box body, the valve is fixedly connected to the fire extinguisher body and is located below the fire extinguisher, the cylinder is fixedly connected to the box body and is located outside the box body, and the push rod is movably connected to the cylinder and is located inside the box body and on the side of the valve; The cooling component also includes a fan, a fixing frame and an air duct. There are multiple fans and fixing frames, each of which is fixedly connected to the back plate and located on one side of the semiconductor refrigeration plate. Each fan is fixedly connected to the corresponding fixing frame and located inside the corresponding fixing frame. There are multiple air ducts, each of which is fixedly connected to the corresponding fixing frame and located on one side of the corresponding fixing frame.

2. The abnormal temperature alarm device for high and low voltage distribution cabinets according to claim 1 is characterized in that: The abnormal temperature alarm device for the high and low voltage distribution cabinets also includes a Bluetooth module and a control terminal. Each of the temperature detectors is electrically connected to the Bluetooth module, and the Bluetooth module is wirelessly connected to the control terminal.

3. The abnormal temperature alarm device for high and low voltage distribution cabinets according to claim 2 is characterized in that: The control terminal has a PLC control system and is electrically connected to each of the semiconductor refrigeration plates.

4. The abnormal temperature alarm device for high and low voltage distribution cabinets according to claim 3 is characterized in that: The abnormal temperature alarm device for the high and low voltage distribution cabinets also includes a warning light, each of which is fixedly connected to the corresponding semiconductor refrigeration plate and is located above the corresponding semiconductor refrigeration plate.

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