A safe fireproof electric energy metering box used in a dry environment

Abstract

The application relates to a safe fireproof electric energy metering box used in a dry environment, which comprises a box body, an electric energy meter, a fire extinguishing structure and a switch assembly, the electric energy meter is installed in the box body, and the fire extinguishing structure is installed at the top of the box body; the fire extinguishing structure comprises a fire extinguishing tank, a fire extinguishing nozzle and a switch valve; the fire extinguishing tank is arranged at the back of the top of the box body, the fire extinguishing nozzle is connected with the fire extinguishing tank through a pipeline and the switch valve; when the temperature rises, a memory alloy spring is elongated and pushes a movable plate to move to the right supporting plate direction, a connecting shaft is moved to a semicircular groove, the left end of the movable plate is separated from a left supporting plate, the movable plate is rotated around the connecting shaft as a central shaft, and a pressing plate is pressed to open the switch valve at the back of the fire extinguishing tank when the pressing plate rotates. Through the fireproof electric energy metering box, fire can be extinguished in time, and the loss caused by the fire can be reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of electricity metering boxes, and in particular, a safe and fireproof electricity metering box for use in dry environments. Background Technology

[0002] An electricity metering box is a special box used to install electricity meters and metering equipment. It is usually made of metal or high-strength insulating materials. The internal temperature of an electricity metering box may become too high due to the following reasons: (1) Short circuit: If an electrical short circuit occurs inside the electricity metering box, it may generate a lot of heat, causing the temperature to rise and potentially causing a fire. (2) Overload: Prolonged overload operation may cause the wires or equipment to overheat. (3) Equipment failure: Failure of the electricity meter or other electrical components may also lead to overheating.

[0003] Existing electricity metering boxes are typically installed in stairwells and lack fire protection features. During hot summer months, poor ventilation in stairwells prevents heat from dissipating from the metering boxes, potentially leading to a fire. Furthermore, in dry environments, the high temperatures inside the metering boxes can also easily ignite a fire. Current fire extinguishing methods rely on alarm activation followed by manual intervention. However, the time between alarm activation and manual response allows the fire to spread rapidly, causing significant property damage. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects in the prior art and provide a safe and fireproof power metering box for use in dry environments, which can effectively solve the above-mentioned problems in the prior art.

[0005] A fireproof and safe electrical energy metering box for use in dry environments is characterized by comprising a box body, an energy meter, a fire extinguishing structure, and a switch assembly. The energy meter is installed inside the box body, and the fire extinguishing structure is installed on the top of the box body. The fire extinguishing structure includes a fire extinguishing tank, a fire extinguishing nozzle, and a switch valve. The fire extinguishing tank is located at the rear top of the box body, and the fire extinguishing nozzle is connected to the fire extinguishing tank via a pipe and a switch valve.

[0006] The switch assembly includes a movable plate, a pressure plate, and a shape memory alloy spring. A left support plate and a right support plate are symmetrically installed on the upper side wall of the housing. One end of the shape memory alloy spring is fixed to the left end wall of the housing and located above the left support plate. One end of the movable plate is movably placed on the left support plate and contacts the other end of the shape memory alloy spring. Connecting shafts are symmetrically arranged on the front and rear sides of the other end of the movable plate. Support blocks are provided at the front and rear ends of the right support plate near the left support plate. A semi-circular groove is formed at the connection point between the support block and the right support plate. The connecting shaft is movably placed on the support block. When the connecting shaft moves into the semi-circular groove, the left end of the movable plate disengages from the left support plate and rotates downwards. The pressure plate is installed on the movable plate. When the pressure plate rotates around the connecting shaft, it can press down the switch valve to open the fire extinguisher.

[0007] When the temperature rises, the shape memory alloy spring extends and pushes the movable plate to move towards the right support plate. The connecting shaft moves into the semi-circular groove, the left end of the movable plate disengages from the left support plate, and the movable plate rotates around the connecting shaft. When the pressure plate rotates, it opens the switch valve on the fire extinguisher behind it.

[0008] Furthermore, the top rear end of the box is provided with a fire extinguishing box for installing a fire extinguishing canister. The fire extinguishing canister is connected to the fire extinguishing nozzle through a pipe. A switch valve is installed at the connection between the outlet end of the fire extinguishing canister and the pipe. A switch groove is provided at the connection between the box and the fire extinguishing box. The switch valve passes through the switch groove and is located inside the box, and is located in the circumferential direction of the rotation of the pressure plate.

[0009] Furthermore, the fire extinguishing nozzle is positioned towards the electricity meter.

[0010] Furthermore, the switching valve has a rod-shaped structure.

[0011] Furthermore, the support block has a horizontal L-shaped structure.

[0012] Furthermore, an exhaust fan is installed on the lower rear wall of the housing; and heat dissipation holes are provided on the left and right side walls of the housing.

[0013] Furthermore, a weight is installed on the top of the end of the movable plate near the left support plate.

[0014] The advantages and beneficial effects of this invention are as follows:

[0015] When the temperature rises, the shape memory alloy spring extends and pushes the movable plate towards the right support plate. The connecting shaft moves into the semi-circular groove, and the left end of the movable plate disengages from the left support plate. The movable plate rotates around the connecting shaft as its central axis. As the pressure plate rotates, it presses down to open the switch valve on the fire extinguisher behind it. The fireproof energy metering box described in this invention allows for timely fire suppression, reducing losses caused by fires. Attached Figure Description

[0016] Figure 1 A schematic diagram of a fireproof and safe electrical energy metering box for use in a dry environment, provided by the present invention;

[0017] Figure 2 for Figure 1 Another structural diagram from a different angle;

[0018] Figure 3 This is a schematic diagram of another state of the fireproof and safe electrical energy metering box for use in a dry environment according to the present invention.

[0019] Figure 4 for Figure 3 A magnified view of part A in the image;

[0020] Figure 5 for Figure 3 Implementation status diagram;

[0021] Figure 6 for Figure 5 A magnified view of part B in the image;

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Box body; 2. Electricity meter; 3. Fire extinguisher; 4. Fire extinguishing nozzle; 5. Switch valve; 6. Pipe; 7. Movable plate; 8. Pressure plate; 9. Memory alloy spring; 10. Left support plate; 11. Right support plate; 12. Connecting shaft; 13. Support block; 14. Semi-circular groove; 15. Switch groove; 16. Weight block. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] like Figures 1-6As shown, a fireproof electrical energy metering box for use in dry environments includes a box body 1, an energy meter 2, a fire extinguishing structure, and a switch assembly. The energy meter 2 is installed inside the box body 1, and the fire extinguishing structure is installed on the top of the box body 1. The fire extinguishing structure includes a fire extinguishing tank 3, a fire extinguishing nozzle 4, and a switch valve 5. The fire extinguishing tank 3 is located at the rear top of the box body 1, and the fire extinguishing nozzle 4 is connected to the fire extinguishing tank 3 via a pipe 6 and the switch valve 5.

[0027] The switch assembly includes a movable plate 7, a pressure plate 8, and a shape memory alloy spring 9. A left support plate 10 and a right support plate 11 are symmetrically installed on the upper side wall of the housing 1. One end of the shape memory alloy spring 9 is fixed to the left end wall inside the housing 1 and is located above the left support plate 10. One end of the movable plate 7 is movably placed on the left support plate 10 and contacts the other end of the shape memory alloy spring 9. The other end of the movable plate 7 is symmetrically provided with connecting shafts 12 on both the front and rear sides. The right support plate 11 is provided with support blocks 13 at both the front and rear ends on the side near the left support plate 10. The connection between the support block 13 and the right support plate 11 forms a semi-circular groove 14. The connecting shaft 12 is movably placed on the support block 13. When the connecting shaft 12 moves into the semi-circular groove 14, the left end of the movable plate 7 disengages from the left support plate 10 and rotates downward. The pressure plate 8 is installed on the movable plate 7. When the pressure plate 8 rotates around the connecting shaft 12, it can press down the switch valve 5 to open the fire extinguisher 3.

[0028] In the above technical solution, when the temperature rises, the shape memory alloy spring 9 extends and pushes the movable plate 7 to move towards the right support plate 11. The connecting shaft 12 moves into the semi-circular groove 14, the left end of the movable plate 7 disengages from the left support plate 10, and the movable plate 7 rotates around the connecting shaft 12 as the central axis. When the pressure plate 8 rotates, it opens the switch valve 5 on the fire extinguisher 3 behind it.

[0029] As a preferred embodiment of the above technical solution, the top rear end of the housing 1 is provided with a fire extinguishing box 14 for installing a fire extinguishing canister 3. The fire extinguishing canister 3 is connected to a fire extinguishing nozzle 4 via a pipe 6. A switch valve 5 is installed at the connection between the outlet end of the fire extinguishing canister 3 and the pipe 6. A switch groove 15 is provided at the connection between the housing 1 and the fire extinguishing box 14. The switch valve 5 passes through the switch groove 15 and is located inside the housing 1, in the circumferential direction of the rotation of the pressure plate 8. Preferably, the pressure plate is vertically installed at the top of the right rear end of the movable plate.

[0030] As a preferred embodiment of the above technical solution, the fire extinguishing nozzle 4 is positioned towards the electricity meter 2. The fire extinguishing tank can use different extinguishing media as needed, such as water, foam extinguishing agent, or dry powder extinguishing agent.

[0031] As a preferred embodiment of the above technical solution, the switching valve 5 has a rod-shaped structure.

[0032] As a preferred embodiment of the above technical solution, the support block 13 has a horizontal L-shaped structure.

[0033] As a preferred embodiment of the above technical solution, an exhaust fan is installed on the lower rear wall of the housing 1; and heat dissipation holes are provided on the left and right side walls of the housing 1.

[0034] As a preferred embodiment of the above technical solution, a weight block 16 is installed on the top of the movable plate 7 near the left support plate. The weight block increases the weight of the movable plate near the left support plate.

[0035] The working principle of this invention is as follows:

[0036] When the temperature rises, the shape memory alloy spring 9 extends and pushes the movable plate 7 to move towards the right support plate 11. The connecting shaft 12 moves into the semi-circular groove 14, the left end of the movable plate 7 disengages from the left support plate 10, and the movable plate 7 rotates around the connecting shaft 12 as the central axis. When the pressure plate 8 rotates, it presses down to open the switch valve 5 on the fire extinguisher 3 behind it.

[0037] It should be emphasized that the embodiments described in this invention are illustrative rather than limiting. Therefore, this invention includes, but is not limited to, the embodiments described in the specific implementation. Any other implementations derived by those skilled in the art based on the technical solutions of this invention are also within the scope of protection of this invention.

Claims

1. A safe fireproof electric energy metering box for use in dry environment, characterized in that: Including box (1), electric energy meter (2), fire extinguishing structure and switch assembly, the electric energy meter (2) is installed in the box (1), and the fire extinguishing structure is installed on the top of the box (1);The fire extinguishing structure includes fire extinguishing tank (3), fire extinguishing nozzle (4) and switch valve (5);The fire extinguishing tank (3) is arranged on the top of the box (1) rear, the fire extinguishing nozzle (4) is connected with the fire extinguishing tank (3) through the pipeline (6) and the switch valve (5); The switch assembly includes movable plate (7), pressing plate (8), memory alloy spring (9), the left support plate (10) and right support plate (11) are symmetrically installed on the upper end side wall of the box (1), one end of the memory alloy spring (9) is fixed to the left end wall in the box (1) and is located above the left support plate (10), one end of the movable plate (7) is movably placed on the left support plate (10) and is in contact with the other end of the memory alloy spring (9), the other end of the movable plate (7) is symmetrically provided with connecting shaft (12) on the front and rear sides, the front and rear ends of the right support plate (11) close to the left support plate (10) side are provided with support block (13), the connecting place of the support block (13) and the right support plate (11) forms semicircular groove (14), the connecting shaft (12) is movably placed on the support block (13), and when the connecting shaft (12) moves into the semicircular groove (14), the left end of the movable plate (7) is separated from the left support plate (10) and rotates downward, the pressing plate (8) is installed on the movable plate (7), and when the pressing plate (8) rotates around the connecting shaft (12), the switch valve (5) can be pressed to open the fire extinguishing tank (3).

2. A safe fire resistant electrical metering enclosure for use in a dry environment according to claim 1, characterized in that: The top rear end of the box (1) is provided with a fire extinguishing tank for installing the fire extinguishing tank (3), the fire extinguishing tank (3) is connected with the fire extinguishing nozzle (4) through the pipeline (6), the switch valve (5) is installed at the connecting place of the outlet end of the fire extinguishing tank (3) and the pipeline (6), the switch groove (15) is opened at the connecting place of the box (1) and the fire extinguishing tank, and the switch valve (5) is arranged in the box (1) and located in the circumferential direction of the pressing plate (8) and is arranged in the box (1).

3. A safe fire resistant electrical metering enclosure for use in a dry environment according to claim 2, wherein: The fire extinguishing nozzle (4) is arranged towards the electric energy meter (2).

4. A safe fire resistant electrical metering enclosure for use in a dry environment according to claim 3, wherein: The switch valve (5) is a rod-shaped structure.

5. A safe fire resistant electrical metering enclosure for use in dry environments according to claim 1, characterized in that: The support block (13) is a transverse L-shaped structure.

6. A safe fire resistant electrical metering enclosure for use in dry environments as defined in claim 1, wherein: The lower rear end wall in the box (1) is provided with an exhaust fan;The left and right side walls of the box (1) are provided with heat dissipation holes.

7. A safe fire resistant electrical metering enclosure for use in dry environments according to claim 1, characterized in that: The end of the movable plate (7) close to the left support plate is provided with a weight block (16) on the top.

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