Electricity meter box and method of using the same

Abstract

A meter box for electricity metering and its use method belong to the field of power equipment. It includes a shell and a box body; the shell body is fixedly connected to the outside of the box body, and a cavity is provided inside the shell body; the hollow end of the box body is hinged with a door, and the outer wall of the hollow end of the box body is provided with a groove fixedly connected to a sealing airbag; the outer wall of the box body is provided with a through hole and a connecting hole; the sealing airbag is provided with an air hole connected to the connecting hole; the through hole connects the cavity inside the shell body with the box body; a slide that can slide in the cavity is provided between the through hole and the connecting hole. The present invention can not only effectively seal the box body and isolate oxygen when a short circuit causes a fire, so as to extinguish the open flame and avoid causing a larger fire, but also effectively prevent most of the toxic gases generated by the burning of the wire insulation layer from drifting into the corridor to avoid affecting the health of residents.

Description

Technical Field

[0001] The invention relates to an electric meter box for electric power metering and a use method thereof, belonging to the field of electric power equipment. Background Art

[0002] Most of the electric meter boxes currently used on the market are metal boxes. Although their structure is simple, there is a risk of internal wire short circuit causing fire when the electric meter box is in use. If the fire is not discovered and controlled in time, it is easy to cause great damage to the residential building. In addition, the insulation layer of the wire will produce toxic and harmful gases when burning. After the electric meter box located in the corridor of the residential building catches fire, the gas will enter the room and affect the health of the residents. Therefore, it is necessary to improve it. Summary of the Invention

[0003] The purpose of the present invention is to solve the above-mentioned problems existing in the background technology and to provide an electric power meter box and a method of using the same.

[0004] The present invention achieves the above-mentioned purpose by adopting the following technical solutions:

[0005] A meter box for electricity metering, comprising a shell and a box body; the shell body is fixedly connected to the outside of the box body, and a cavity is provided inside the shell body; a door is hingedly connected to the hollow end of the box body, and a groove fixedly connected to a sealing airbag is provided on the outer wall of the hollow end of the box body; a through hole and a connecting hole are provided on the outer wall of the box body; an air hole connected to the connecting hole is provided on the sealing airbag; the through hole connects the cavity inside the shell body with the box body; a slide that can slide in the cavity is provided between the through hole and the connecting hole.

[0006] A method for using an electric meter box for electric power measurement, the method comprising the following steps:

[0007] Step 1: When a fire occurs inside the box due to a short circuit, the gas inside the box expands due to heat, pushing the slide plate to move, thereby expanding the sealing airbag and blocking the connection hole through the blocking block;

[0008] Step 2: The expansion of the gas inside the box will also push the bottom plate and rectangular tube II to slide away from the box, thereby increasing the contact area between the shell, the box and the outside world, thereby accelerating heat dissipation;

[0009] Step 3: When the open flame inside the box is extinguished, as the temperature drops, the gas inside the box contracts. Under the action of gas pressure, the bottom plate and rectangular cylinder II move toward the box, and eventually drive the U-shaped tube to connect with one of the cylinders.

[0010] Step 4: After the staff cuts off the power, they use the exhaust equipment to connect to the other cylinder, turn the bolts to separate baffles I and II, and then use the exhaust equipment to draw the gas generated by the combustion in the box and shell into the storage container.

[0011] Compared with the existing technology, the beneficial effects of the present invention are: the present invention can not only effectively seal the box and isolate oxygen when a short circuit causes a fire, so as to extinguish the open flame and avoid causing a larger fire, but also effectively prevent most of the toxic gases generated by the burning of the wire insulation layer from drifting into the corridor, avoiding affecting the health of residents. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view of an electric power meter box for measuring electric power of the present invention;

[0013] Figure 2 It is a cross-sectional view of the shell and box body of an electric power meter box for measuring electricity of the present invention;

[0014] Figure 3 This is a schematic structural diagram of a shell of an electric meter box for electric power metering according to the present invention;

[0015] Figure 4 It is a structural schematic diagram of a blocking device for an electric meter box for electric power metering according to the present invention;

[0016] Figure 5 It is a cross-sectional view of a box body of an electric power meter box of the present invention;

[0017] Figure 6 yes Figure 5 Cross-sectional view in the AA direction;

[0018] Figure 7 It is a structural schematic diagram of a sliding device of an electric meter box for electric power metering of the present invention;

[0019] Figure 8 It is a top view of a sliding device of an electric power meter box for measuring electricity of the present invention;

[0020] Figure 9 This is a front view of a rectangular tube II of an electric power meter box of the present invention;

[0021] Figure 10 It is a schematic diagram of the state of the sliding device of the electric power meter box of the present invention during the combustion process inside the box;

[0022] Figure 11 The present invention is a schematic diagram of a state of a sliding device of an electric meter box for electric power metering after an open fire inside the box is extinguished. DETAILED DESCRIPTION

[0023] The technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] Specific implementation method 1: Figure 1-11 As shown, this embodiment describes an electric meter box for electricity metering, comprising a shell 1 and a box body 3; the shell 1 is fixedly connected to the outside of the box body 3, and a cavity is provided inside the shell 1; a door 2 is hingedly connected to the hollow end of the box body 3, and a groove fixedly connected to a sealing airbag 4 is provided on the outer wall of the hollow end of the box body 3; a through hole 32 and a connecting hole 31 are provided on the outer wall of the box body 3; the sealing airbag 4 is provided with an air hole connected to the connecting hole 31; the through hole 32 connects the cavity inside the shell 1 with the box body 3; a slide 11 that can slide in the cavity is provided between the through hole 32 and the connecting hole 31. The box body 3 and the shell 1 are both made of metal. When the combustible material in the box body 3 burns, the air pressure in the sealing airbag 4 increases due to the change in air pressure, and then the sealing airbag 4 is pressed against the door 2 to isolate oxygen from entering the box body 3. After the oxygen in the box body 3 is exhausted, the open flame can be extinguished, effectively preventing the fire from spreading.

[0025] At the same time, the present application uses a mechanical structure to control the fire, which is more reliable than electrical components such as sensors and drive motors. Especially when the wire is short-circuited and contacts the box 3, its instantaneous current is conducted through the box 3 to the sensors, drive motors and other electrical components, which will burn them out.

[0026] A sealing device 12 is also provided within the cavity of the housing 1. The sealing device 12 comprises a support rod 121. An elastic telescopic rod 122 is fixedly connected to the side of the vertical end of the support rod 121. A sealing block 123, which is capable of sealing the connection hole 31, is fixedly connected to the free end of the elastic telescopic rod 122. The sealing block 123 on the sealing device 12 can still seal the connection hole 31 even after the open flame is extinguished and the pressure within the box 3 decreases. This prevents toxic gases generated by combustion within the box 3 from leaking into the corridor due to a subsequent decrease in the pressure within the sealed airbag 4.

[0027] The slide plate 11 moves under the force, pushing the gas into the sealed airbag 4, causing it to deform.

[0028] The shell 1 is set to be L-shaped, and a perforation I13 is provided on the bottom surface of the horizontal end of the L-shaped shell 1, and a perforation II34 located above the perforation I13 is provided on the bottom surface of the box body 3; a sliding device 5 is fixedly connected to the inner walls of the perforation I13 and the perforation II34.

[0029] The sliding device 5 includes a rectangular tube I 51 fixedly connected to the inner walls of perforations I 13 and II 34; a slideway I 53 is provided on the inner wall of rectangular tube I 51, and a rectangular tube II 54 is provided inside rectangular tube I 51 to slide with the slideway I 53; a slider I 52 is fixedly connected to the outer wall of rectangular tube II 54 to slide with the slideway I 53; a bottom plate 57 is provided inside rectangular tube II 54 to slide with the slideway I 53; a slider II 56 is fixedly connected to the side of the bottom plate 57, and the slider II 56 slides with the slideway II 55 on the inner wall of rectangular tube II 54. When the combustible material in the box 3 burns, rectangular tube I 51, rectangular tube II 54, and bottom plate 57 can move to the outside of the box 3 to increase the contact area with the outside air, accelerate heat dissipation, and prevent the temperature in the box 3 from slowly decreasing, resulting in the internal temperature still being higher than the ignition point of the combustible material when the door 2 is opened, and the outside air entering the box 3 may cause the combustible material to re-ignite.

[0030] A warning strip 515 is provided on the outer surface of the rectangular tube II 54 to warn residents not to touch the box 3 to avoid injury to residents caused by high temperature or circuit breaker failure leading to electrification of the box 3.

[0031] The bottom plate 57 has two holes, each of which is fixedly connected to a cylinder 58. Each cylinder 58 is fixedly connected to a baffle I 510. A slot 512 is provided on the side of the cylinder 58, located below the baffle I 510. The slot 512 slidably engages a connecting rod 513. A connecting ring 514 is fixedly connected to one end of the connecting rod 513, and a baffle II 59 is fixedly connected to the corresponding cylinder 58 at the other end. A bolt 511 is threadedly connected to the bottom of the bottom plate 57, and the bolt 511 is connected to the connecting ring 514 via a bearing. One of the cylinders 58 is connected to an exhaust device to extract harmful gases from the combustion chamber 3. The other cylinder 58 is connected to the outside world and replenishes air into the chamber 3 to balance the air pressure.

[0032] Both baffles I 510 and II 59 are provided with a plurality of ventilation holes. When baffles I 510 and II 59 are in contact, the ventilation holes on baffles I 510 and II 59 are disconnected. This prevents the box 3 from being connected to the outside when baffles I 510 and II 59 are in contact, which could cause harmful gases from combustion to flow into the corridor.

[0033] The housing 3 is also provided with a U-shaped tube 33. One end of the U-shaped tube 33 passes through the housing 3 and communicates with the inner cavity of the shell 1. The other end of the U-shaped tube 33 is located above one of the cylinders 58. After the bottom plate 57 moves upward, one of the cylinders 58 communicates with the U-shaped tube 33. The U-shaped tube 33 connects the cylinder 58 for the compensating gas to the inner cavity of the shell 1. This allows external gas to enter the inner cavity first during compensating gas flow, driving the flow of gas within the inner cavity and reducing the amount of harmful gas remaining.

[0034] A method for using an electric meter box for electric power measurement, the method comprising the following steps:

[0035] Step 1: When a fire occurs in the box body 3 due to a short circuit, the gas in the box body 3 expands due to the heat, pushing the slide plate 11 to move, thereby expanding the sealing airbag 4 and blocking the connecting hole 31 through the blocking block 123;

[0036] Step 2: The expansion of the gas inside the box 3 will also push the bottom plate 57 and the rectangular tube II 54 to slide away from the box 3, thereby increasing the contact area between the shell 1, the box 3 and the outside world, thereby accelerating heat dissipation;

[0037] Step 3: When the open flame inside the box 3 is extinguished, as the temperature drops, the gas inside the box 3 contracts. Under the action of gas pressure, the bottom plate 57 and the rectangular cylinder II 54 move toward the box 3, and finally drive the U-shaped tube 33 to communicate with one of the cylinders 58.

[0038] Step 4: After the staff uses the exhaust equipment to connect with the other cylinder 58, they rotate the bolt 511 to separate the baffle I 510 from the baffle II 59, and then use the exhaust equipment to draw the gas generated by the combustion in the box 3 and the shell 1 into the storage container.

[0039] The working principle of the present invention is: when the device is used, when the box 3 is short-circuited and ignites, the gas in the box 3 expands due to heat, pushing the slide plate 11 to Figure 2 In the state shown, the slide 11 moves upward, and the air at the upper end of the slide 11 enters the sealing airbag 4, increasing the internal pressure of the sealing airbag 4, thereby increasing the pressure of the sealing airbag 4 against the door 2, so as to completely seal the box 3, prevent the combustion gas from entering the corridor, and at the same time isolate the oxygen. After the slide 11 moves upward for a distance, the slide 11 also pushes the support rod 121 to move upward, and the support rod 121 drives the blocking block 123 to move. When the blocking block 123 moves to the position of the connecting hole 31, it is embedded in the connecting hole 31 under the action of the elastic telescopic rod 122, and the connecting hole 31 is blocked.

[0040] At the same time, since the bottom plate 57 is located at the bottom of the rectangular tube II 54 when the box 3 is in normal use, when the gas inside the box 3 expands, it will also push the bottom plate 57 at the bottom of the rectangular tube II 54 connected to the box 3 to slide away from the box 3, and the bottom plate 57 will also drive the rectangular tube II 54 to move together, so that the rectangular tube II 54 is exposed under the shell 1, so as to increase the contact area between the shell 1 and the box 3 and the outside world, so that the box 3 can accelerate the heat dissipation; at the same time, after the rectangular tube II 54 moves downward, the warning strip 515 on its side is exposed to the outside of the box 3 and the shell 1, warning residents not to touch the shell 1 and the box 3, and notifying the staff at the same time to avoid short circuit of the wires and contact with the box 3, and when the circuit breaker is not working normally (that is, the wires are still energized), the box 3 and the shell 1 are energized, causing injuries to residents.

[0041] When the open flame inside the box 3 is extinguished, as the temperature gradually decreases, the gas inside the box 3 shrinks, and because the box 3 has been burned, the box 3 is isolated from the outside world by the sealed airbag 4. The combustion causes the oxygen inside the box 3 to be exhausted. In the process of returning to normal temperature, the gas volume decreases and is less than the external air pressure. Therefore, under the action of air pressure, the bottom plate 57 and the rectangular cylinder II 54 are pushed toward the box 3. After the rectangular cylinder II 54 moves to its original position, the pressure difference continues to push the bottom plate 57 upward until it drives the U-shaped tube 33 to connect with one of the cylinders 58; if the air pressure difference is not enough to drive the bottom plate 57 to move upward a sufficient distance, the subsequent staff can use tools to push the bottom plate 57 to the position where the U-shaped tube 33 connects with one of the cylinders 58 after arriving at the scene, so as to facilitate the subsequent collection of the gas generated after combustion in the box 3 and the shell 1.

[0042] After the staff cuts off the power, they use the exhaust equipment to connect to the other cylinder 58, turn the bolt 511, and the bolt 511 drives the connecting rod 513 to move downward, so that the baffle I 510 and the baffle II 59 are separated. Then, after starting the exhaust equipment, the gas generated by the combustion in the box body 3 and the shell 1 is sucked into the storage container through the exhaust equipment.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other configurations without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations coming within the meaning and range of equivalents of the claims are intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0044] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An electric meter box for electric power measurement, characterized in that: The invention comprises a shell (1) and a box (3); the shell (1) is fixedly connected to the outside of the box (3), and a cavity is provided inside the shell (1); a door (2) is hingedly connected to the hollow end of the box (3), and a groove fixedly connected to a sealing airbag (4) is provided on the outer wall of the hollow end of the box (3); a through hole (32) and a connecting hole (31) are provided on the outer wall of the box (3); an air hole communicating with the connecting hole (31) is provided on the sealing airbag (4); the through hole (32) connects the cavity inside the shell (1) with the inner wall of the sealing airbag (4); The box (3) is connected; a slide plate (11) capable of sliding in the cavity is provided between the through hole (32) and the connecting hole (31); a blocking device (12) is further provided in the cavity of the shell (1); the blocking device (12) comprises a support rod (121); an elastic telescopic rod (122) is fixedly connected to the side of the vertical end of the support rod (121); a blocking block (123) capable of sealing the connecting hole (31) is fixedly connected to the free end of the elastic telescopic rod (122); the slide plate (11) is moved by force, The gas is pushed into the sealed airbag (4) to deform it. The shell (1) is set to be L-shaped. A perforation I (13) is provided on the bottom surface of the horizontal end of the L-shaped shell (1). A perforation II (34) located above the perforation I (13) is provided on the bottom surface of the box (3); a sliding device (5) is fixedly connected to the inner walls of the perforation I (13) and the perforation II (34), and the sliding device (5) includes a rectangular tube I (51) fixedly connected to the inner walls of the perforation I (13) and the perforation II (34); the rectangular tube A slideway I (53) is provided on the inner wall of the rectangular tube I (51), and a rectangular tube II (54) is provided inside the rectangular tube I (51) to slide with the rectangular tube I (51); a slider I (52) is fixedly connected to the outer wall of the rectangular tube II (54) to slide with the slideway I (53); a bottom plate (57) is provided inside the rectangular tube II (54) to slide with the rectangular tube II (54); a slider II (56) is fixedly connected to the side of the bottom plate (57), and the slider II (56) slides with the slideway II (55) on the inner wall of the rectangular tube II (54).

2. The electric power meter box according to claim 1, characterized in that: A warning strip (515) is provided on the outer side of the rectangular tube II (54).

3. The electric power meter box according to claim 2, characterized in that: The bottom plate (57) is provided with two holes, and a cylinder (58) is fixedly connected in each hole; a baffle I (510) is fixedly connected inside each cylinder (58), and a sliding groove (512) located below the baffle I (510) is provided on the side of the cylinder (58); the sliding groove (512) is slidably matched with the connecting rod (513); one end of the connecting rod (513) is fixedly connected with a connecting ring (514), and the other end of the connecting rod (513) is fixedly connected with a baffle II (59) slidably matched with the corresponding cylinder (58); the bottom of the bottom plate (57) is connected to a bolt (511) through a thread, and the bolt (511) and the connecting ring (514) are connected through a bearing.

4. The electric power meter box according to claim 3, characterized in that: The baffle I (510) and baffle II (59) are both provided with a plurality of vent holes, and when the baffle I (510) and baffle II (59) are in contact, the vent holes on the baffle I (510) are not connected with the vent holes on the baffle II (59).

5. The electric power meter box according to claim 4, characterized in that: The box body (3) is further provided with a U-shaped tube (33); one end of the U-shaped tube (33) passes through the box body (3) and is communicated with the inner cavity of the shell (1); the other end of the U-shaped tube (33) is located above one of the cylinders (58); after the bottom plate (57) moves upward, one of the cylinders (58) is communicated with the U-shaped tube (33).

6. The method for using the electric power meter box according to claim 5, characterized in that: The method of use comprises the following steps: Step 1: When a fire occurs due to a short circuit in the box (3), the gas in the box (3) expands due to the heat, pushing the slide plate (11) to move, thereby expanding the sealing airbag (4) and blocking the connecting hole (31) through the blocking block (123); Step 2: The expansion of the gas inside the box (3) will also push the bottom plate (57) and the rectangular tube II (54) to slide away from the box (3), thereby increasing the contact area between the shell (1), the box (3) and the outside world, thereby accelerating heat dissipation; Step 3: When the open flame inside the box (3) is extinguished, as the temperature drops, the gas inside the box (3) contracts, and under the action of gas pressure, the bottom plate (57) and the rectangular cylinder II (54) move toward the box (3), and finally drive the U-shaped tube (33) to communicate with one of the cylinders (58); Step 4: After the power is turned off, the staff uses the exhaust device to connect to the other cylinder (58), and then rotates the bolt (511) to separate the baffle I (510) and the baffle II (59). Then, the exhaust device is used to extract the gas generated by the combustion in the box (3) and the shell (1) into the storage container.

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