Safe intelligent electric energy metering device

Abstract

The invention discloses a safe intelligent electric energy metering device which comprises a box body, an electrical element is arranged on the rear wall of the box body, a box door is rotationally connected to the box body, the safe intelligent electric energy metering device further comprises a fire extinguishing assembly, the fire extinguishing assembly comprises a pop-up piece and an air bag which are arranged at the bottom of the box body, heat dissipation holes are formed in the inner side wall of the box body, and the pop-up piece is located between the heat dissipation holes and the electrical element; the upper surface of the pop-up piece is provided with a pop-up cavity for compressed installation of the air bag, a fire extinguishing agent is stored in the air bag, the side, facing the electrical element, of the air bag is provided with fireproof cloth and a spray head penetrating through the fireproof cloth, the side, back to the electrical element, of the pop-up piece is provided with a micro inflator pump, and the rear wall of the box body is further provided with a temperature sensor electrically connected with the micro inflator pump. The temperature sensor senses the temperature change, the micro inflation pump is started to enable the air bag to pop up and release the fire extinguishing agent, and fire extinguishing is carried out on the on-fire electrical element; the fireproof cloth can block air, prevent external air from entering the box body, provide combustion-supporting gas and reduce the fire spreading speed and range.

Description

Technical Field

[0001] This application relates to the technical field of metering boxes, and in particular to a safe and intelligent electricity metering device. Background Technology

[0002] With the continuous development of the power system, power boxes play a vital role in power distribution and management. However, power boxes are at risk of catching fire due to various reasons during operation. If a fire is not extinguished in a timely and effective manner, it will cause serious damage to the power supply and related equipment.

[0003] Currently, in the field of fire prevention and extinguishing technology for electrical boxes, when a fire occurs in an electrical box, a series of extinguishing agents are often used to carry out fire extinguishing operations. In order to trigger the release of extinguishing agents, existing technologies usually use temperature sensors or devices that are activated by high temperatures. These triggering methods can detect abnormally high temperatures inside the electrical box to a certain extent, thereby initiating the fire extinguishing program in an attempt to control the fire.

[0004] Meanwhile, to meet the heat dissipation requirements of the metering box and ensure that the components inside maintain good working condition during normal operation, the metering box usually has corresponding heat dissipation holes on its side walls. These holes help dissipate heat and maintain a stable temperature inside the box under normal circumstances. However, this also brings a significant problem: when the components inside the metering box catch fire, the presence of these holes prevents the formation of a sealed environment. In this situation, air can continuously enter the metering box, and the oxygen and other combustion-supporting gases in the air will fuel the combustion of the components, making the fire difficult to control effectively, failing to reduce the speed and extent of its spread, and thus increasing the losses and damage caused by the fire.

[0005] In summary, while existing fire extinguishing technologies for electrical boxes possess certain fire extinguishing triggering mechanisms, their effectiveness is severely hampered by sealing issues caused by heat dissipation vents. These technologies fail to meet the demands of rapid and effective extinguishing of electrical box fires in real-world applications, necessitating a superior solution to address this technical challenge. Summary of the Invention

[0006] To ensure that fires can be extinguished quickly and effectively in the event of a fire in the power distribution box, a safe and intelligent power metering device is provided.

[0007] The above-mentioned objective of this application is achieved through the following technical solution: A safe and intelligent electricity metering device includes a housing, an electrical component on the rear wall of the housing, a door rotatably connected to the front wall of the housing, and a fire extinguishing assembly. The fire extinguishing assembly includes a pop-out component and an airbag located at the bottom of the housing. A heat dissipation hole is opened on the inner side wall of the housing, and the pop-out component is located between the heat dissipation hole and the electrical component. The upper surface of the ejector has an ejection cavity for the airbag to be compressed and installed. The airbag contains a fire extinguishing agent. The side of the airbag facing the electrical components is provided with a fireproof cloth and a nozzle that penetrates the fireproof cloth. The side of the ejector facing away from the electrical components is provided with a miniature air pump. A temperature sensor electrically connected to the miniature air pump is also provided on the rear wall of the box.

[0008] By adopting the above technical solution, the temperature sensor can detect the temperature of the rear wall of the enclosure. When the electrical components catch fire and generate high temperatures, the temperature sensor detects the high temperature and transmits an electrical signal, triggering a miniature air pump to inflate the airbag, causing the airbag to pop out of the ejection chamber. A fireproof cloth is provided on the side of the airbag facing the electrical components to cover them, isolating them from the heat dissipation holes and preventing air from entering the fire area of ​​the electrical components, keeping the area around the electrical components relatively sealed. Simultaneously, as the miniature air pump continuously inflates the airbag, it sprays the extinguishing agent inside the airbag from the nozzle to extinguish the fire. The combination of the fireproof cloth and the extinguishing agent not only slows the spread of the fire and reduces its range but also extinguishes the fire on the electrical components, improving fire extinguishing efficiency.

[0009] Preferably, slide rods are fixed on both sides of the bottom of the box, and a gap is left between the slide rods and the bottom of the box, and the two ends of the pop-out part slide on the two slide rods respectively.

[0010] By adopting the above technical solution, the slide bar can restrict the movement direction of the ejector, making it easier to adjust the position of the ejector and allowing the ejector to slide accurately along the slide bar between the heat dissipation hole and the electrical components, so that the airbag is accurately in the ready-to-open position.

[0011] Preferably, it also includes a drive assembly, which includes a fixing member and an electromagnet. The fixing member is fixed to a slide rod below the electrical component. A tension spring is sleeved on the outer wall of the slide rod. One end of the tension spring is fixedly connected to the fixing member, and the other end of the tension spring is fixedly connected to the side of the ejector facing the fixing member. The electromagnet is fixed to the slide rod near the door. A magnetic block that attracts the electromagnet is fixed to the side of the ejector facing the electromagnet, and the electromagnet is electrically connected to the temperature sensor.

[0012] By adopting the above technical solution, the ejector is positioned away from electrical components, making it easier for staff to inspect and maintain the ejector and airbag during routine maintenance. When the temperature sensor detects a fire in the electrical components, it transmits an electrical signal to the miniature air pump, simultaneously energizing the electromagnet and changing its magnetic poles. The electromagnet repels the magnetic block on the ejector, releasing the elastic potential energy stored in the spring, causing the ejector to slide along the slide rod towards the electrical components. As the ejector slides towards the fixed component, the airbag rapidly expands under the action of the miniature air pump, avoiding interference from electrical components during expansion, reducing the risk of the airbag exploding due to pressure from objects, enhancing stability and reliability, ensuring the airbag can be successfully ejected and the extinguishing agent can be applied, more effectively extinguishing open flames, and reducing the speed and range of fire spread.

[0013] Preferably, a rotatably connected baffle is provided at the connection between the ejection cavity and the upper surface of the ejector, and the baffle covers the top of the airbag.

[0014] By adopting the above technical solution, the baffle that is rotatably connected and covers the airbag can prevent debris from entering the ejection cavity when the airbag is not deployed, reducing the risk of friction damage from debris when the micro air pump inflates the airbag and deploys it; when the micro air pump inflates the airbag and deploys it, the baffle can rotate and open in the direction of airbag deployment, ensuring that the airbag deploys smoothly and that the airbag can deploy in a timely and accurate manner to extinguish the fire in the event of a fire.

[0015] Preferably, the ejector has a limiting groove communicating with the ejection cavity, the airbag includes an expansion part and a limiting part, the limiting part is engaged in the limiting groove, the expansion part is located in the ejection cavity, and the micro air pump is connected to the expansion part.

[0016] By adopting the above technical solution, the miniature air pump is connected to the expansion part, which can accurately inflate the expansion part when the metering device catches fire, allowing the airbag to quickly pop out and release the extinguishing agent; the limiting groove cooperates with the limiting part of the airbag, so that the airbag can be accurately installed in the pop-out part, avoiding displacement when not on fire. When installing the airbag, simply insert the limiting part of the airbag along the groove opening direction, simplifying the installation and removal of the airbag.

[0017] Preferably, the ejector is provided with a miniature vacuum pump connected to the expansion section, and the miniature vacuum pump is located on the side of the ejector facing away from the electrical components.

[0018] By adopting the above technical solution, after the electrical components catch fire and are extinguished, a miniature vacuum pump can be turned on to extract the gas inside the airbag, allowing the airbag to change from an inflated state to a compressed state, which makes it easier for staff to clean, replace and repair the damaged electrical components.

[0019] Preferably, the cross-section of the inflatable part after inflation is flush with the inner wall of the box.

[0020] By adopting the above technical solution, when the inflatable part of the airbag is inflated by the micro air pump, its cross-section is flush with the inner wall of the box. This can prevent outside air from continuously entering the box through the heat dissipation holes and the gap between the airbag and the inner wall of the box, bringing oxygen that aids combustion. This can reduce the speed and range of fire spread. Combined with the fire extinguishing agent in the airbag, it can improve the fire extinguishing effect, better protect the power supply and related equipment, and reduce fire losses.

[0021] Preferably, the nozzle of the spray head is fan-shaped.

[0022] By adopting the above technical solution, and based on the fire extinguishing components, the fan-shaped nozzle of the nozzle can make the sprayed fire extinguishing agent cover a larger area, improve the fire extinguishing effect on fires involving electrical components, and reduce the losses and hazards caused by fires.

[0023] Preferably, the nozzle has a spiral tapering flow channel inside.

[0024] By adopting the above technical solution, the device is equipped with fire extinguishing components. The fire extinguishing agent is delivered to the fire location by means of ejection parts and airbags. The nozzle is equipped with a spiral tapering flow channel. The fire extinguishing agent forms centrifugal force through this flow channel, which makes the sprayed fire extinguishing agent better aggregate, enhances the spray force and uniformity, and more effectively extinguishes the flames.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The temperature sensor detects temperature changes, activates a miniature air pump to deploy the airbag and release the extinguishing agent to extinguish the fire on the electrical components; 2. Fireproof cloth can block air and seal heat dissipation holes, preventing outside air from entering the enclosure to provide combustion-supporting gas, reducing the speed and range of fire spread, and reducing fire losses; 3. The drive assembly causes the ejector to abut against the fixing part along the slide bar axis. As the ejector slides toward the fixing part, the airbag expands rapidly under the action of the micro-inflation pump, avoiding interference from electrical components during expansion, reducing the risk of the airbag being detonated due to objects squeezing it, and enhancing stability and reliability. Attached Figure Description Figure 1 A schematic diagram of a safe and intelligent electricity metering device; Figure 2 for Figure 1 Cross-section Figure 1 ; Figure 3 for Figure 2 A magnified view of a portion at point A; Figure 4 This is a schematic diagram of the airbag structure after the deployment components have inflated. Figure 5 for Figure 1 Cross-section Figure 2 ; Figure 6 This is a cross-sectional view of the nozzle.

[0026] Reference numerals: 1. Housing; 11. Electrical components; 12. Heat dissipation holes; 13. Housing door; 2. Fire extinguishing assembly; 21. Ejector; 211. Ejector cavity; 212. Limiting groove; 22. Airbag; 221. Inflation part; 222. Limiting part; 223. Nozzle; 2231. Nozzle; 2232. Spiral tapering channel; 23. Miniature air pump; 24. Baffle; 25. Miniature vacuum pump; 26. Fireproof cloth; 27. Temperature sensor; 3. Slide rod; 4. Drive assembly; 41. Fixing component; 42. Electromagnet; 43. Tension spring; 44. Magnetic block. Detailed Implementation The following section provides a more detailed description, in conjunction with the accompanying diagrams: As attached Figure 1 and attached Figure 2 As shown, a safe intelligent electricity metering device includes a housing 1, a fire extinguishing assembly 2, and a sliding rod 3. The housing 1 is the main frame of the entire device. Electrical components 11 are provided on the rear wall of the housing 1 for functions such as electricity distribution and metering. The two side walls of the housing 1 are threadedly connected to the main frame of the housing 1 for easy maintenance. Heat dissipation holes 12 are opened on the two side walls of the housing 1 to dissipate heat from the electrical components 11. A door 13 is rotatably connected to the front wall of the housing 1, and a gap is left between the door 13 and the two side walls of the housing 1 to facilitate the inspection and maintenance of the internal components.

[0027] There are two slide rods 3, which are located on the two sides of the bottom of the box 1. The slide rods 3 are generally made of high-strength metal, such as stainless steel. There is a gap between the bottom of the slide rod 3 and the bottom of the box 1. One end of the slide rod 3 is fixed to the rear wall of the box 1, and the other end of the slide rod 3 is fixed to the front wall of the box 1. There is a certain distance between the bottom of the slide rod 3 and the bottom of the box 1.

[0028] As attached Figure 2 and attached Figure 3As shown, the fire extinguishing assembly 2 includes a pop-out component 21 and an airbag 22 located at the bottom of the housing 1. The pop-out component 21 is rectangular in shape, with its two ends respectively fitted onto two sliding rods 3. The pop-out component 21 is located between the heat dissipation hole 12 and the electrical component 11. The upper surface of the pop-out component 21 has a pop-out cavity 211 for the airbag 22 to be compressed and installed. In normal operation, the airbag 22 is compressed into the pop-out cavity 211. A miniature air pump 23 is provided on the side of the pop-out component 21 facing away from the electrical component 11. The miniature air pump 23 and the airbag 22... The bottom is connected to the airbag 22 for inflation. There are two miniature air pumps 23 so that they can quickly inflate the airbag 22. A temperature sensor 27 electrically connected to the miniature air pump 23 is provided on the rear wall of the box 1. When the electronic component catches fire, the temperature sensor 27 will transmit an electrical signal to the miniature air pump 23, and the miniature air pump 23 will inflate the airbag 22 so that the airbag 22 will pop out from the ejection cavity 211.

[0029] As attached Figure 4 and attached Figure 5 As shown, the ejector 21 also has a limiting groove 212 that communicates with the ejection cavity 211. The limiting groove 212 is located below the ejection cavity 211. The airbag 22 includes an expansion part 221 and a limiting part 222. The expansion part 221 and the limiting part 222 are fixedly connected, but the expansion part 221 and the limiting part 222 are not connected to each other. The limiting part 222 is inserted into the limiting groove 212 along the slotting direction of the limiting groove 212. The limiting groove 212 and the limiting part 222 cooperate to ensure that the airbag 22 can be accurately installed in the ejector 21, preventing displacement when not ignited. When installing the airbag 22, it is only necessary to insert the limiting part 222 of the airbag 22 along the slotting direction of the limiting groove 212, which simplifies the disassembly and assembly of the airbag 22.

[0030] The expansion section 221 is located inside the ejection cavity 211, and the micro air pump 23 is connected to the expansion section 221. The cross section of the expansion section 221 after expansion is flush with the inner wall of the box 1, which can prevent outside air from continuously entering the box 1 through the heat dissipation hole 12 and the gap between the air bag 22 and the inner wall of the box 1, bringing oxygen to support combustion, thereby better sealing the box 1 and preventing air from entering.

[0031] The ejector 21 is also equipped with a miniature vacuum pump 25 on the side facing away from the electrical component 11. The miniature vacuum pump 25 is connected to the bottom of the expansion part 221 and can evacuate the airbag 22 to compress it, making it easier to store in the ejection cavity 211. The miniature vacuum pump 25 can be turned on to extract the gas in the airbag 22, changing the airbag 22 from an expanded state to a compressed state, making it easier for staff to clean, replace and repair damaged electrical components 11.

[0032] As attached Figure 5 and attached Figure 6 As shown, the expansion section 221 stores a fire extinguishing agent, which is dry powder. A fireproof cloth 26 and a nozzle 223 penetrating the fireproof cloth 26 are provided on the side facing the electrical component 11. When the micro air pump 23 continuously blows air into the airbag 22, the dry powder will be sprayed out from the nozzle 223 along with the gas. The fireproof cloth 26 can block the fire and high temperature to a certain extent and prevent the surrounding items from being quickly ignited. The nozzle 223 is used to spray the fire extinguishing agent in the airbag 22 onto the fire.

[0033] The nozzle 223 is a fan-shaped nozzle 2231. The fan-shaped design allows the extinguishing agent to cover the fire area more widely, increasing the spray area. The nozzle 223 also has a spiral tapering channel 2232. After the extinguishing agent enters, it accelerates along the spiral tapering channel 2232, gains tangential velocity, and forms centrifugal force. At the same time, the cross-section of the channel gradually narrows, increasing the flow velocity and strengthening the centrifugal effect, causing the fluid to diffuse in a ring shape. This allows the extinguishing agent to accelerate and pressurize before spraying, increasing the spray distance and force.

[0034] As attached Figure 4 As shown, a rotatably connected baffle 24 is provided at the connection between the upper surface of the ejector 21 and the ejection cavity 211, and the baffle 24 covers the airbag 22. The baffle 24 normally protects the airbag 22. When the airbag 22 is inflated, the baffle 24 is pushed open. When the airbag 22 is not ejected, the baffle 24 can prevent foreign objects from entering the ejection cavity 211, reducing the risk of friction damage to the airbag 22 by the micro air pump 23 when it inflates the airbag 22 and ejects it. When the micro air pump 23 inflates the airbag 22 and ejects it, the baffle 24 can rotate and open in the ejection direction of the airbag 22 to ensure that the airbag 22 is ejected smoothly.

[0035] As attached Figure 2 As shown, a safe intelligent electricity metering device also includes a drive assembly 4. The drive assembly 4 includes a fixing member 41, a tension spring 43, a magnetic block 44, and an electromagnet 42. The fixing member 41 is columnar in shape, and there are two fixing members 41. The two fixing members 41 are respectively fixed to the outer wall of the two slide rods 3, and the fixing members 41 are located below the electrical component 11. There are two tension springs 43. The two tension springs 43 are respectively sleeved on the outer wall of the two slide rods 3. One end of the tension spring 43 is fixedly connected to the fixing member 41, and the other end of the tension spring 43 is fixedly connected to the side of the pop-out member 21 facing the fixing member 41. The tension spring 43 can play a role in buffering and resetting during the movement of the pop-out member 21.

[0036] There are two magnetic blocks 44, each with a columnar shape. The two magnetic blocks 44 are fixed to the side of the ejector 21 facing away from the electrical component 11. An electromagnet 42 is fixed to the slide rod 3, located away from the fixing member 41. The electromagnet 42 and magnetic blocks 44 attract and fix each other, and the electromagnet 42 is electrically connected to the temperature sensor 27. Under normal conditions, the electromagnet 42 and magnetic blocks 44 attract each other, and the tension spring 43 is in a stretched state storing elastic potential energy. When the temperature sensor 27 detects a fire in the electronic component, it controls the electromagnet 44... When energized, the magnetic block 44 and the electromagnet 42 will change from a state of mutual attraction to a state of repulsion. Then, under the action of the elastic potential energy stored in the tension spring 43, the ejector 21 slides towards the electrical component 11. During the process of the ejector 21 sliding towards the electrical component 11, the airbag 22 expands rapidly under the action of the micro air pump 23. This can avoid interference from the electrical component 11 during expansion, reduce the risk of the airbag 22 being detonated due to the pressure of objects, enhance stability and reliability, ensure that the airbag 22 can be ejected smoothly and apply the extinguishing agent, more effectively extinguish open flames, and reduce the speed and range of fire spread.

[0037] Implementation principle of this embodiment When the temperature sensor 27 detects that the electrical component 11 is on fire, the temperature sensor 27 sends an electrical signal to the micro air pump 23 and the electromagnet 42. The electromagnet 42 is energized and changes its magnetic poles, no longer attracting the ejector 21. The elastic potential energy stored in the tension spring 43 is released instantly, pulling the ejector 21 to slide along the slide bar 3 towards the electrical component 11. During the sliding of the ejector 21, the micro air pump 23 simultaneously inflates the expansion part 221 of the airbag 22. The airbag 22 is ejected from the ejection cavity 211 and expands. The cross section of its expansion part 221 is flush with the inner side wall of the box 1, covering the heat dissipation hole 12, blocking outside air from entering the box 1, isolating the combustion-supporting gas, and the fireproof cloth 26 can cover the burning area to block the spread of the fire. The nozzle 223 sprays the extinguishing agent in the airbag 22 at high speed, forming centrifugal force to enhance the spray range and force, accurately covering the ignition point. The fireproof cloth 26 isolates the air and the fire source, reducing combustion support, and the extinguishing agent directly extinguishes the flames. The combination of the two effectively controls the speed and range of the fire spread. After the fire in electrical component 11 is extinguished, the staff opens the cabinet door 13 and starts the miniature vacuum pump 25 on the side of the ejector 21 facing away from electrical component 11. The pump draws gas from the airbag 22, causing it to contract back into the ejection chamber 211. The cover on the heat dissipation hole 12 is removed, restoring ventilation to the cabinet 1. The damaged electrical component 11 is cleaned or replaced. At the same time, the ejector 21 is pulled to make the magnet 44 and the electromagnet 42 attract each other, pulling the ejector 21 back to the initial locking position along the slide bar 3. Meanwhile, a new airbag 22 is replaced to prepare for the next emergency response.

[0038] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of protection claimed in this application.

Claims

1. A safe and intelligent electricity metering device, comprising a housing (1), wherein an electrical component (11) is provided on the rear wall of the housing (1), and a door (13) is rotatably connected to the front wall of the housing (1), characterized in that, It also includes a fire extinguishing component (2), which includes an ejector (21) and an airbag (22) located at the bottom of the housing (1). The inner side wall of the housing (1) has a heat dissipation hole (12), and the ejector (21) is located between the heat dissipation hole (12) and the electrical component (11). The upper surface of the ejector (21) has an ejection cavity (211) for the airbag (22) to be compressed and installed. The airbag (22) contains a fire extinguishing agent. The side of the airbag (22) facing the electrical component (11) is provided with a fireproof cloth (26) and a nozzle (223) that penetrates the fireproof cloth (26). The side of the ejector (21) facing away from the electrical component (11) is provided with a miniature air pump (23). The rear wall of the box (1) is also provided with a temperature sensor (27) that is electrically connected to the miniature air pump (23).

2. The safe intelligent electricity metering device according to claim 1, characterized in that, The bottom sides of the box (1) are respectively fixed with sliding rods (3), and there is a gap between the sliding rods (3) and the bottom of the box (1), and the two ends of the pop-out part (21) slide on the two sliding rods (3).

3. The safe intelligent electricity metering device according to claim 1, characterized in that, It also includes a drive assembly (4), which includes a fixing member (41) and an electromagnet (42). The fixing member (41) is fixed on a slide rod (3) below the electrical component (11). A tension spring (43) is sleeved on the outer wall of the slide rod (3). One end of the tension spring (43) is fixedly connected to the fixing member (41), and the other end of the tension spring (43) is fixedly connected to the side of the ejector (21) facing the fixing member (41). The electromagnet (42) is fixed on the slide rod (3) near the door (13). A magnetic block (44) that attracts the electromagnet (42) is fixed on the side of the ejector (21) facing the electromagnet (42). The electromagnet (42) is electrically connected to the temperature sensor (27).

4. A safe intelligent electricity metering device according to claim 1, characterized in that, The connection between the ejection cavity (211) and the upper surface of the ejector (21) is provided with a rotatably connected baffle (24), and the baffle (24) covers the top of the airbag (22).

5. A safe intelligent electricity metering device according to claim 1, characterized in that, The ejector (21) has a limiting groove (212) that communicates with the ejection cavity (211). The airbag (22) includes an expansion part (221) and a limiting part (222). The limiting part (222) is engaged in the limiting groove (212). The expansion part (221) is located in the ejection cavity (211). The micro air pump (23) is connected to the expansion part (221).

6. A safe intelligent electricity metering device according to claim 5, characterized in that, The ejector (21) is provided with a miniature vacuum pump (25) connected to the expansion part (221), and the miniature vacuum pump (25) is located on the side of the ejector (21) facing away from the electrical component (11).

7. A safe intelligent electricity metering device according to claim 5, characterized in that, The cross section of the expansion part (221) after being inflated is flush with the inner wall of the box (1).

8. A safe intelligent electricity metering device according to claim 1, characterized in that, The nozzle (2231) of the nozzle (223) is fan-shaped.

9. A safe intelligent electricity metering device according to claim 8, characterized in that, The nozzle (223) is provided with a spiral tapering flow channel (2232).

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