High-low voltage power distribution cabinet short circuit fire extinguishing device

Abstract

The utility model provides a high and low voltage power distribution cabinet short circuit fire extinguishing apparatus, including mounting rack, carbon dioxide gas cylinder and sensor, the mounting rack is used for fixed installation in the power distribution cabinet body, the outlet end of carbon dioxide gas cylinder is provided with solenoid valve, the sensor is used for detecting the temperature and smog in the cabinet body, and the sensor is used for detecting the temperature and smog in the cabinet body. The sensor and the electromagnetic valve are connected with a controller; wherein supporting plates are arranged on the two sides of the mounting frame, plugging assemblies are arranged on the supporting plates, the plugging assemblies are connected with the controller, the plugging assemblies correspond to heat dissipation holes formed in the power distribution cabinet body, and the plugging assemblies can plug the heat dissipation holes after making contact with the power distribution cabinet body. The fire extinguishing device is mainly used for being installed on a power distribution cabinet body, the fire extinguishing effect can be effectively improved, and the probability of after-combustion caused by carbon dioxide gas leakage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing of a distribution cabinet, in particular to a short-circuit fire extinguishing device for a high- and low-voltage distribution cabinet. Background Art

[0002] High and low voltage distribution cabinets are distribution equipment used for power distribution, control, metering and cable connection in power supply systems. Generally, power supply bureaus and substations use high voltage switch cabinets, which are then stepped down by transformers and led out to low voltage distribution cabinets. Low voltage distribution cabinets are then led to distribution boards, control boxes and switch boxes for each power user. The equipment inside is a distribution device that is assembled into one by some switches, circuit breakers, fuses, buttons, indicator lights, meters, wires and other protective devices to meet the design functional requirements.

[0003] The existing low-voltage intelligent power distribution cabinet is installed as a cabinet body with various devices installed inside. The cabinet door is installed on the front of the cabinet, and the other four sides have heat dissipation holes for heat dissipation. However, when the internal body of the cabinet is working, due to long-term use, the internal leads and connectors will gradually age. In severe cases, poor contact, wire damage, or even open circuit and short circuit may occur, affecting the normal operation of the entire circuit and even inducing fire. In order to avoid the spread of fire and cause heavy losses and casualties, it is necessary to extinguish the fire inside the distribution cabinet.

[0004] Generally, in order to dissipate the heat inside the low-voltage power distribution cabinet, a heat dissipation port is generally set for the low-voltage power distribution cabinet. Although this method can solve the problem of heat dissipation difficulties, there is still a risk of burning. If not handled in time, the fire will expand. Therefore, it is necessary to install a fire-fighting agency in the existing distribution cabinet to deal with sudden dangerous situations, so as to avoid the situation from being too serious and causing more losses. It is particularly important.

[0005] The utility model patent with publication number: CN216598469U discloses that the present application discloses a power distribution cabinet with automatic fire extinguishing function, which includes a hollow cabinet body, on which an internal fire extinguishing mechanism is provided, and the internal fire extinguishing mechanism includes a jet pipe for spraying carbon dioxide gas into the cabinet body, a carbon dioxide gas cylinder and an air pump, the jet pipe is arranged on the top surface of the cabinet body, the jet pipe is connected to the air outlet of the air pump, and the air inlet of the air pump is connected to the air outlet of the carbon dioxide gas cylinder.

[0006] The utility model adds a carbon dioxide gas cylinder on the outside, which increases the volume of the distribution cabinet. At the same time, after the carbon dioxide enters the cabinet, the gas is prone to leakage, resulting in the inability to extinguish the fire. The fire extinguishing effect is poor and the fire is prone to re-ignition. Utility Model Content

[0007] The purpose of the utility model is to provide a short-circuit fire extinguishing device for a high and low voltage distribution cabinet, which is mainly used to be installed in a distribution cabinet body, can effectively improve the fire extinguishing effect, and reduce the probability of re-ignition after leakage of carbon dioxide gas.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0009] High and low voltage distribution cabinet short circuit fire extinguishing device, including:

[0010] A mounting frame, the mounting frame is used to be fixedly installed in the power distribution cabinet;

[0011] A carbon dioxide gas cylinder, wherein the outlet end of the carbon dioxide gas cylinder is provided with a solenoid valve;

[0012] A sensor, the sensor is used to detect the temperature and smoke in the cabinet, the sensor is connected to the solenoid valve and a controller;

[0013] Among them, support plates are provided on both sides of the mounting frame, and sealing components are provided on the support plates. The sealing components are connected to the controller, and the sealing components correspond to the heat dissipation holes provided on the cabinet body of the power distribution cabinet. The sealing components can seal the heat dissipation holes after contacting the cabinet body of the power distribution cabinet.

[0014] Among them, the blocking component includes a baffle, a connecting column fixedly connected to the baffle, an end head arranged on the connecting column, and a tension spring mounted on the connecting column. The connecting column is perpendicular to the support plate and is slidably connected to the support plate. One end of the tension spring is connected to the support plate and the other end is connected to the end head. The blocking component also includes an iron sheet and an electromagnet. The iron sheet is fixedly set on the baffle, and the electromagnet is installed on the support plate and connected to the controller.

[0015] Furthermore, the connecting column is a square column, and the supporting plate is provided with a square hole matching the square column.

[0016] Among them, a sealing ring is arranged on the baffle plate close to the side of the power distribution cabinet body.

[0017] Furthermore, support plates are provided on both sides of the mounting frame, mounting holes are provided on the support plates, and the support plates are fixedly mounted on the inner wall of the power distribution cabinet by screws.

[0018] Among them, there are several carbon dioxide cylinders.

[0019] Furthermore, the electromagnet is a power-off demagnetization type electromagnet.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The utility model is mainly used for being installed in the cabinet of a power distribution cabinet. The interior of the power distribution cabinet is monitored in real time by means of the arranged sensors. When smoke or excessive temperature occurs, the solenoid valve on the carbon dioxide cylinder is opened under the action of the controller to allow carbon dioxide to enter the interior of the power distribution cabinet. At the same time, the heat dissipation holes on the cabinet of the power distribution cabinet are blocked by the arranged blocking components to reduce the leakage of internal carbon dioxide gas, thereby improving the sealing effect and effectively preventing re-ignition. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a three-dimensional diagram of the utility model.

[0024] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0025] Figure 3 This is a schematic diagram of the state in which the utility model is installed in a power distribution cabinet.

[0026] Reference numerals:

[0027] 101-mounting frame, 102-carbon dioxide cylinder, 103-sensor, 104-distribution cabinet, 105-solenoid valve, 106-support plate, 107-blocking assembly, 108-heat dissipation hole, 109-baffle, 110-connecting column, 111-tension spring, 112-end, 113-iron sheet, 114-electromagnet, 115-sealing ring, 116-support plate. DETAILED DESCRIPTION

[0028] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0029] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of 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 a limitation on the embodiments of the present invention.

[0030] 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0031] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0032] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0034] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0035] See also Figure 1-Figure 3 , this embodiment discloses a power distribution cabinet fire extinguishing device, specifically a high and low voltage power distribution cabinet short circuit fire extinguishing device, including a mounting frame 101, a carbon dioxide gas cylinder 102 and a sensor 103, the mounting frame 101 is used to be fixedly installed in a power distribution cabinet body 104, the outlet end of the carbon dioxide gas cylinder 102 is provided with a solenoid valve 105, the sensor 103 is used to detect the temperature and smoke in the cabinet body, and the sensor 103 and the solenoid valve 105 are connected to a controller;

[0036] Among them, support plates 106 are provided on both sides of the mounting frame 101, and a sealing component 107 is provided on the support plate 106. The sealing component 107 is connected to the controller, and the sealing component 107 corresponds to the heat dissipation hole 108 provided on the distribution cabinet body 104. The sealing component 107 can seal the heat dissipation hole 108 after contacting the distribution cabinet body 104.

[0037] The utility model is mainly used for being installed in a distribution cabinet body 104, and real-time monitoring is performed on the inside of the distribution cabinet body 104 through the arranged sensor 103. When smoke or excessive temperature occurs, the solenoid valve 105 on the carbon dioxide gas cylinder 102 is opened under the action of the controller, so that carbon dioxide enters the inside of the distribution cabinet body 104. At the same time, the heat dissipation holes 108 on the distribution cabinet body 104 are blocked through the arranged blocking component 107, so as to reduce the leakage of internal carbon dioxide gas, thereby improving the sealing effect, and effectively preventing re-ignition.

[0038] Among them, the blocking component 107 includes a baffle 109, a connecting column 110 fixedly connected to the baffle 109, an end 112 arranged on the connecting column 110, and a tension spring 111 mounted on the connecting column 110, the connecting column 110 is perpendicular to the support plate 106 and is slidably connected to the support plate 106, one end of the tension spring 111 is connected to the support plate 106, and the other end is connected to the end 112; the blocking component 107 also includes an iron sheet 113 and an electromagnet 114, the iron sheet 113 is fixedly set on the baffle 109, and the electromagnet 114 is installed on the support plate 106 and connected to the controller.

[0039] In actual use, the controller is connected to a power source and also to a backup battery.

[0040] Under normal circumstances, under the action of the iron sheet 113 and the electromagnet 114, the baffle 109 has a certain distance from the side wall of the distribution cabinet body 104 to ensure that the internal heat can be discharged when the distribution cabinet is in normal use, thereby achieving the purpose of cooling; when an abnormality occurs, the electromagnet 114 is demagnetized, and under the action of the tension spring 111, the baffle 109 blocks the heat dissipation holes 108 on the distribution cabinet body 104, thereby reducing the leakage speed and amount of carbon dioxide gas, so as to achieve the purpose of improving the fire extinguishing effect.

[0041] The connecting column 110 is a square column, and the supporting plate 106 is provided with a square hole matching the square column, so that the supporting column can move on the supporting plate 106 .

[0042] Furthermore, in actual use, a sealing ring 115 is provided on the baffle 109 on the side close to the distribution cabinet body 104, and the provided sealing ring 115 is in contact with the distribution cabinet body 104 to improve the sealing effect.

[0043] Among them, support plates 116 are set on both sides of the mounting frame 101, and mounting holes are set on the support plates 116. The support plates 116 are fixed on the inner wall of the distribution cabinet body 104 by screws. The installation of the mounting frame 101 is facilitated by the provided cardboard.

[0044] Among them, there are several carbon dioxide cylinders 102. In actual use, the sensor 103 includes a smoke sensor 103, a temperature sensor 103 and an air pressure sensor 103. After a fire occurs, the air pressure sensor 103 can detect the air pressure inside the distribution cabinet 104. When the air pressure drops, it means that the carbon dioxide gas has leaked. To avoid re-ignition, multiple carbon dioxide cylinders 102 can be opened in sequence.

[0045] The electromagnet 114 is a power-off demagnetization type electromagnet.

[0046] Furthermore, the carbon dioxide gas cylinder 102 is a high-pressure carbon dioxide gas cylinder 102 .

[0047] In actual use, a sealing strip needs to be provided between the cabinet body 104 and the cabinet door to prevent leakage from other positions; because the distribution cabinet cannot be completely sealed, when the baffle 109 blocks the heat dissipation hole, it mainly prevents a large amount of gas from being discharged from the heat dissipation hole, but a small amount of gas is still discharged from other positions of the distribution cabinet.

[0048] In actual use, the controller is connected to a remote alarm device.

[0049] In addition, this embodiment also discloses a power distribution cabinet, in which the above-mentioned high and low voltage power distribution cabinet short-circuit fire extinguishing device is installed inside the power distribution cabinet body 104 .

[0050] In actual use, the controller is connected to an independent power source, such as a battery.

[0051] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. High and low voltage distribution cabinet short circuit fire extinguishing device, characterized in that: include: A mounting frame, the mounting frame is used to be fixedly installed in the power distribution cabinet; A carbon dioxide gas cylinder, wherein the outlet end of the carbon dioxide gas cylinder is provided with a solenoid valve; A sensor, the sensor is used to detect the temperature and smoke in the cabinet, the sensor is connected to the solenoid valve and a controller; Among them, support plates are arranged on both sides of the mounting frame, and blocking components are arranged on the support plates. The blocking components are connected to the controller, and the blocking components correspond to the heat dissipation holes arranged on the cabinet body of the power distribution cabinet. The blocking components can block the heat dissipation holes after contacting the cabinet body of the power distribution cabinet; There are several carbon dioxide cylinders; The sensors include smoke sensors, temperature sensors and air pressure sensors. When a fire occurs, the air pressure sensor can detect the air pressure inside the distribution cabinet. When the air pressure drops, multiple carbon dioxide cylinders are opened in sequence. A sealing strip is provided between the distribution cabinet and the cabinet door. The blocking component includes a baffle, a connecting column fixedly connected to the baffle, an end head arranged on the connecting column, and a tension spring mounted on the connecting column. The connecting column is perpendicular to the support plate and is slidably connected to the support plate. One end of the tension spring is connected to the support plate and the other end is connected to the end head. The blocking component also includes an iron sheet and an electromagnet. The iron sheet is fixedly arranged on the baffle, and the electromagnet is installed on the support plate and connected to the controller.

2. The short-circuit fire extinguishing device for high and low voltage distribution cabinets according to claim 1 is characterized in that: The connecting column is a square column, and the supporting plate is provided with a square hole matching the square column.

3. The short-circuit fire extinguishing device for high and low voltage distribution cabinets according to claim 1 is characterized in that: A sealing ring is arranged on the baffle plate on one side close to the power distribution cabinet body.

4. The short-circuit fire extinguishing device for high and low voltage distribution cabinets according to claim 1 is characterized in that: Support plates are arranged on both sides of the mounting frame, mounting holes are arranged on the support plates, and the support plates are fixedly mounted on the inner wall of the power distribution cabinet by screws.

5. The short-circuit fire extinguishing device for high and low voltage distribution cabinets according to claim 1 is characterized in that: The electromagnet is a power-off demagnetization type.

6. The short-circuit fire extinguishing device for high and low voltage distribution cabinets according to any one of claims 1 to 5, characterized in that: Carbon dioxide cylinders are high-pressure carbon dioxide cylinders.

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