Ring main unit equipped with aerosol device

Abstract

The utility model discloses a ring main unit equipped with an aerosol device, comprising a ring main unit body, the ring main unit body is internally provided with a cable chamber, the cable chamber is internally provided with an aerosol device capable of automatically spraying, the aerosol device comprises an aerosol tank body, the bottom of the aerosol tank body is provided with a spraying port, and the aerosol tank body is internally provided with an aerosol nozzle. The aerosol tank body is provided with a jet orifice, the jet orifice directly faces a high-voltage cable head, the top of the aerosol tank body is provided with a detector and a starting feedback line, the starting feedback line is connected with a controller, and gas in the aerosol tank body is jetted out from the jet orifice after the detector is triggered; the ring main unit with the aerosol device is safe to use, quick in response, good in fire extinguishing effect, stable in overall structure, capable of meeting the internal fire prevention and extinguishing requirements of the ring main unit and suitable for popularization and application.

Description

Technical Field

[0001] The utility model relates to the technical field of aerosol fire extinguishing, in particular to a ring main unit configured with an aerosol device. Background Art

[0002] The ring main unit is an indispensable part of the modern power system, and it has the advantages of simple structure, small volume, low price, improving power supply parameters and performance, and power supply safety.

[0003] However, with the wide application of the ring main unit, more and more problems have gradually emerged. For example, in recent years, cable fires often occur in the cable chamber of the ring main unit. The reasons for the fires can generally be divided into the following categories: 1. Due to unqualified processing and installation processes of the ring main unit manufacturer, problems such as loose connections of the primary main components in the cable chamber, loose screws, and worn insulation skins are caused, resulting in too large resistance at the conductor connection, generating a large amount of heat. However, the cable chamber is a closed space, and the heat cannot be dissipated, and the temperature is too high, which then ignites the combustibles in the cabinet and causes a fire; 2. Due to the increase in user load, the cable has been operating under overload for a long time, accelerating the aging of the cable, and causing a fire in severe cases; 3. Due to a short circuit in the line or equipment, a large current is generated, and the cable generates a large amount of heat, breaking through the insulation layer and causing a fire; 4. Due to the poor environment where the equipment is located, the temperature, humidity, dust, etc. in the ring main unit accelerate the aging of the cable insulation skin, resulting in partial discharge, breaking through the insulation layer, causing a short circuit fault and then triggering a fire. Therefore, ensuring the electrical fire safety of the ring main unit is of great significance for the safe operation of the entire power system.

[0004] In the traditional electrical fire protection system of the ring main unit, it generally includes devices such as temperature monitoring and smoke monitoring. These devices can monitor parameters such as temperature, smoke, and gas in the capacitor cabinet in real time. Once an abnormal situation is detected, an alarm will be immediately issued to notify relevant personnel for handling. In terms of temperature monitoring, a temperature sensor is generally used to monitor the electrical equipment in the capacitor cabinet. Once the temperature is too high or too low, an alarm will be issued. In terms of smoke monitoring, a smoke sensor is generally used to monitor the smoke in the capacitor cabinet. Once the smoke concentration is found to be too high, an alarm will be immediately issued.

[0005] However, the fire in the closed cable chamber spreads very fast. After the general monitoring device issues an alarm, it may be too late for relevant personnel to come and extinguish the fire, resulting in greater losses. Therefore, there is an urgent need for a device that can respond quickly and extinguish fires automatically and efficiently. Summary of the Utility Model

[0006] The purpose of the utility model is to solve the above problems and provide a ring main unit configured with an aerosol device that is safe to use, responds quickly, has a good fire extinguishing effect, and has a stable overall structure, meeting the internal fire prevention and extinguishing requirements of the ring main unit.

[0007] To achieve the above object, the technical solution of the present utility model is: a ring main unit configured with an aerosol device, including a ring main unit body, a cable chamber is provided inside the ring main unit body, an automatically spraying aerosol device is provided inside the cable chamber, the aerosol device includes an aerosol tank body, a spraying port is provided at the bottom of the aerosol tank body, the spraying port is directly opposite to a high-voltage cable head, a detector and a start feedback line are provided at the top of the aerosol tank body, the start feedback line is connected to a controller, and after the detector is triggered, the gas in the aerosol tank body sprays out from the spraying port.

[0008] Preferably, the detector includes a temperature detector, a flame detector and a smoke detector, and any one of the temperature detector, the flame detector or the smoke detector being triggered can control the spraying of the aerosol tank body.

[0009] Preferably, an installation structure for fixing the aerosol tank body is further provided inside the cable chamber, the installation structure includes an L-shaped installation bracket and a hoop, one end of the L-shaped installation bracket is fixedly connected to the hoop through a fixing screw, an installation hole is provided at the other end of the L-shaped installation bracket, a locking screw is provided at the port of the hoop, and the aerosol tank body is fixed inside the hoop.

[0010] Preferably, an alarm indicator light and a start button are provided on the controller, and a storage battery is provided inside the controller.

[0011] Preferably, the aerosol tank body is made of stainless steel material, and an insulating paint layer is provided on the surface of the aerosol tank body.

[0012] Preferably, the gas inside the aerosol tank body is an inert gas.

[0013] A ring main unit configured with an aerosol device disclosed by the present utility model includes a ring main unit body, a cable chamber is provided inside the ring main unit body, an automatically spraying aerosol device is provided inside the cable chamber, the aerosol device includes an aerosol tank body, a spraying port is provided at the bottom of the aerosol tank body, the spraying port is directly opposite to a high-voltage cable head, a detector and a start feedback line are provided at the top of the aerosol tank body, the start feedback line is connected to a controller, and after the detector is triggered, the gas in the aerosol tank body sprays out from the spraying port; compared with the prior art, the ring main unit configured with the aerosol device has the beneficial effects of safe use, rapid reaction, good fire extinguishing effect, and stable overall structure, meeting the internal fire prevention and extinguishing requirements of the ring main unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of a ring main unit configured with an aerosol device of the present utility model.

[0015] Figure 2Schematic diagram of the aerosol device in a ring main unit equipped with an aerosol device according to the present utility model.

[0016] Figure 3 Schematic diagram of the installation structure in a ring main unit equipped with an aerosol device according to the present utility model.

[0017] Figure 4 Schematic diagram of the controller in a ring main unit equipped with an aerosol device according to the present utility model.

[0018] In the figure: 1, ring main unit body; 101, cable chamber; 2, aerosol device; 3, ejection port; 4, start feedback line; 5, aerosol tank; 6, temperature detector; 7, flame detector; 8, smoke detector; 9, hoop; 10, locking screw; 11, L-shaped mounting bracket; 12, fixing screw; 13, mounting hole; 14, alarm indicator light; 15, controller; 16, start button; 17, storage battery. Detailed implementation manners

[0019] Now, the present utility model will be further described in detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, which only illustrate the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0020] Please refer to Figures 1-4 , a ring main unit equipped with an aerosol device, including a ring main unit body 1. A cable chamber 101 is provided inside the ring main unit body 1. An aerosol device 2 for automatic ejection is provided inside the cable chamber 101. The aerosol device 2 includes an aerosol tank 5. An ejection port 3 is provided at the bottom of the aerosol tank 5. The ejection port 3 faces the high-voltage cable head. A detector and a start feedback line 4 are provided at the top of the aerosol tank 5. The start feedback line 4 is connected to an external controller 15. After the detector is triggered, the gas in the aerosol tank 5 is ejected from the ejection port 3. Among them, the gas in the aerosol tank is one or a mixture of inert gases such as helium, neon, and argon.

[0021] Since the high-voltage cable head part is most likely to generate high temperature and catch fire, the ejection port 3 faces the high-voltage cable head. In case of a fire accident, it is ensured that the gas in the aerosol tank is directly ejected at the high-voltage cable head, so that the gas fills the entire cable chamber 101. The filling of inert gas can achieve a good fire extinguishing effect.

[0022] In this embodiment, the detector includes a temperature detector 6, a flame detector 7, and a smoke detector 8. Any one of the temperature detector 6, the flame detector 7, or the smoke detector 8 being triggered can control the ejection of the aerosol tank 5.

[0023] After any one of the temperature detector 6, the flame detector 7 or the smoke detector 8 is triggered, it is fed back to the controller 15 through the activation feedback line 4. The controller 15 immediately outputs a trigger signal. After the aerosol tank 5 receives the signal, the internal aerosol generating agent is activated, and inert gas is instantly ejected for fire extinguishing. The overall reaction is rapid, the fire extinguishing effect is good, and the fire situation is prevented from getting out of control.

[0024] An alarm indicator light 14 and a start button 16 are provided on the controller 15. A storage battery 17 is provided inside the controller 15, and the storage battery 17 provides power for the whole device. The device can also directly press the start button 16, and after pressing, the aerosol device starts to extinguish fire directly. Whether it is triggered to extinguish fire or start the button to extinguish fire, the alarm indicator light is always on.

[0025] To ensure the stability of the aerosol tank 5, an installation structure for fixing the aerosol tank 5 is also provided in the cable chamber 101. The installation structure includes an L-shaped installation bracket 11 and a hoop 9. One end of the L-shaped installation bracket 11 is fixedly connected to the hoop 9 through a fixing screw 12. The other end of the L-shaped installation bracket 11 is provided with an installation hole 13. The L-shaped bracket is fixed to the inner wall of the cable chamber 101 through screws at the installation hole. The port of the hoop 9 is provided with a locking screw 10, and the aerosol tank 5 is fixed inside the hoop 9, thereby ensuring the use stability.

[0026] In this embodiment, the aerosol tank 5 is made of stainless steel, and an insulating paint layer is provided on the surface of the aerosol tank 5, which can play the roles of insulation and anti-corrosion, and the maintenance cost is low.

[0027] Based on the above embodiment, the fire extinguishing medium in the aerosol tank 5 can also be a mixture of powder fire extinguishing agent and inert gas. After the aerosol tank 5 receives the start signal, the internal aerosol generating agent is activated, and thus the fire extinguishing agent powder and inert gas are quickly ejected, achieving a good fire extinguishing effect.

[0028] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A ring main unit configured with an aerosol device, comprising a ring main unit body, characterized in that, Inside the ring main unit, there is a cable chamber, and an automatically spraying aerosol device is arranged in the cable chamber. The aerosol device includes an aerosol tank body. A spraying port is arranged at the bottom of the aerosol tank body, and the spraying port is facing the high-voltage cable head. A detector and a starting feedback wire are arranged at the top of the aerosol tank body, and the starting feedback wire is connected to a controller. After the detector is triggered, the gas in the aerosol tank body sprays out from the spraying port.

2. The ring main unit configured with an aerosol device according to claim 1, characterized in that, The detector includes a temperature detector, a flame detector and a smoke detector. Any one of the temperature detector, the flame detector or the smoke detector being triggered can control the spraying of the aerosol tank body.

3. The ring main unit configured with an aerosol device according to claim 1 or 2, characterized in that, An installation structure for fixing the aerosol tank body is further arranged in the cable chamber. The installation structure includes an L-shaped installation bracket and a hoop. One end of the L-shaped installation bracket is fixedly connected to the hoop through a fixing screw. An installation hole is arranged at the other end of the L-shaped installation bracket, and a locking screw is arranged at the port of the hoop. The aerosol tank body is fixed in the hoop.

4. The ring main unit configured with an aerosol device according to claim 1, wherein, An alarm indicator light and a starting button are arranged on the controller, and a storage battery is arranged inside the controller.

5. The ring main unit configured with an aerosol device according to claim 1 or 4, characterized in that The aerosol tank body is made of stainless steel material, and an insulating paint layer is arranged on the surface of the aerosol tank body.

6. The ring main unit configured with an aerosol device according to claim 1, characterized in that The gas in the aerosol tank body is an inert gas.

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