Electric meter box for electric power measurement and use method thereof

Abstract

The invention discloses an electric meter box for electric power metering and a use method thereof, and belongs to the field of power equipment. Comprising a shell and a box body, the shell is fixedly connected to the outer side of the box body, and a cavity is formed in the shell; a door is hinged to the hollowed-out end of the box body, and a groove fixedly connected with the sealing air bag is formed in the outer wall of the hollowed-out end of the box body. A through hole and a connecting hole are formed in the outer wall of the box body; an air hole communicated with the connecting hole is formed in the sealing air bag; the cavity in the shell is communicated with the box body through the through hole; and a sliding plate capable of sliding in the cavity is arranged between the through hole and the connecting hole. When a fire disaster is caused by short circuit, the box body can be effectively sealed, oxygen can be effectively isolated, open fire can be extinguished, large fire disasters are avoided, meanwhile, most toxic gas generated after a wire insulating layer is burnt can be effectively prevented from drifting to a corridor, and the health of residents is prevented from being affected.

Description

Technical Field

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

[0002] Most of the electric meter boxes used on the market at present are metal boxes. Although their structures are simple, there is a risk of fire caused by short - circuit of internal wires when the electric meter box is in use. Once the fire is not discovered and controlled in time, it is easy to cause great damage to residential buildings. Moreover, toxic and harmful gases will be generated when the insulating layer of the wire burns. After the electric meter box in the corridor of the residential building catches fire, the gas will enter the room, affecting 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 problems in the background art, and provide an electric meter box for electric power metering and its use method.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] An electric meter box for electric power metering includes a housing and a box body; the housing is fixedly connected to the outside of the box body, and a cavity is provided inside the housing; a door is hinged 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; through - holes and connection holes are provided on the outer wall of the box body; an air hole communicating with the connection hole is provided on the sealing airbag; the through - hole communicates the cavity inside the housing with the box body; a sliding plate capable of sliding in the cavity is provided between the through - hole and the connection hole.

[0006] A use method of an electric meter box for electric power metering, the use method includes the following steps:

[0007] Step 1: When a fire breaks out due to a short - circuit inside the box body, the gas inside the box body expands due to heat, pushing the sliding plate to move, and then expanding the sealing airbag, and blocking the communication hole through a blocking block;

[0008] Step 2: The expansion of the gas inside the box body will also push the bottom plate and the rectangular cylinder II to slide away from the box body, so as to increase the contact area between the housing, the box body and the outside world, and then accelerate heat dissipation;

[0009] Step 3: When the open fire inside the box body goes out, as the temperature drops, the gas inside the box body shrinks, and under the action of air pressure, it pushes the bottom plate and the rectangular cylinder II to move towards the box body, and finally drives the U - shaped tube to communicate with one of the cylinders;

[0010] Step 4: After the staff cuts off the power, after using the air extraction device to communicate with the other cylinder, rotate the bolt to separate the baffle plate I from the baffle plate II, and then use the air extraction device to pump the gas generated by combustion inside the box body and the housing into the storage container.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: When a fire is caused by a short circuit, the present invention can not only effectively seal the box body, isolate oxygen, so as to extinguish the open fire and avoid causing a large fire, but also effectively prevent most of the toxic gases generated after the combustion of the wire insulation layer from drifting into the corridor, avoiding affecting the health of residents. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the front view of an electric energy meter box for electric power metering according to the present invention;

[0013] Figure 2 is the sectional view of the housing and the box body of an electric energy meter box for electric power metering according to the present invention;

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

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

[0016] Figure 5 is the sectional view of the box body of an electric energy meter box for electric power metering according to the present invention;

[0017] Figure 6 is Figure 5 the sectional view in the A-A direction in

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

[0019] Figure 8 is the top view of the sliding device of an electric energy meter box for electric power metering according to the present invention;

[0020] Figure 9 is the front view of the rectangular cylinder II of an electric energy meter box for electric power metering according to the present invention;

[0021] Figure 10 is the state schematic diagram of the sliding device during the combustion process inside the box body of an electric energy meter box for electric power metering according to the present invention;

[0022] Figure 11 is the state schematic diagram of the sliding device after the open fire inside the box body of an electric energy meter box for electric power metering according to the present invention is extinguished. DETAILED DESCRIPTION OF THE INVENTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Specific Embodiment 1: As Figures 1 - 11 shown, this embodiment records an electric energy metering electric meter box, including a housing 1 and a box body 3; the housing 1 is fixedly connected to the outside of the box body 3, and a cavity is provided inside the housing 1; a door 2 is hinged 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; through holes 32 and connection holes 31 are provided on the outer wall of the box body 3; air holes communicating with the connection holes 31 are provided on the sealing airbag 4; the through holes 32 communicate the cavity inside the housing 1 with the box body 3; a sliding plate 11 capable of sliding in the cavity is provided between the through holes 32 and the connection holes 31. The box body 3 and the housing 1 are both made of metal. When combustibles in the box body 3 burn, the air pressure in the sealing airbag 4 increases due to the change in air pressure, and then the sealing airbag 4 closely adheres to 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 expansion of the fire;

[0025] At the same time, the present application uses a mechanical structure to control the fire situation, which is more reliable than electrical components such as sensors and drive motors. Especially when the instantaneous current is conducted to electrical components such as sensors and drive motors through the box body 3 after a short circuit of the wire contacts the box body 3, they will be burned out.

[0026] A blocking device 12 is further provided in the cavity of the housing 1; the blocking device 12 includes 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 connection hole 31 is fixedly connected to the free end of the elastic telescopic rod 122. The blocking block 123 on the blocking device 12 can still block the communication hole 31 after the open flame is extinguished later and the air pressure in the box body 3 decreases, avoiding the leakage of toxic gases generated by the internal combustion of the box body 3 into the corridor due to the decrease in the air pressure in the box body 3 and the consequent decrease in the air pressure in the sealing airbag 4.

[0027] The sliding plate 11 moves under force, pushing gas into the sealing airbag 4 to cause it to deform.

[0028] The housing 1 is provided in an L shape, a perforation Ⅰ13 is provided on the bottom surface of the horizontal end of the L-shaped housing 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 cylinder I 51 fixedly connected to the inner walls of the perforation I 13 and the perforation II 34; a slideway I 53 is provided on the inner wall of the rectangular cylinder I 51, and a rectangular cylinder II 54 that is slidably engaged with it is provided inside the rectangular cylinder I 51; a slider I 52 that is slidably engaged with the slideway I 53 is fixedly connected to the outer wall of the rectangular cylinder II 54; a bottom plate 57 that is slidably engaged with it is provided inside the rectangular cylinder II 54; a slider II 56 is fixedly connected to the side of the bottom plate 57, and the slider II 56 is slidably engaged with the slideway II 55 on the inner wall of the rectangular cylinder II 54. When the combustibles in the box body 3 burn, the rectangular cylinder I 51, the rectangular cylinder II 54, and the bottom plate 57 can move to the outside of the box body 3 to increase the contact area with the outside air, accelerate heat dissipation, and prevent the temperature in the box body 3 from dropping slowly, resulting in the internal temperature still being higher than the ignition point of the combustibles after combustion when the door 2 is opened, and the outside air may cause the combustibles to reignite after entering the box body 3.

[0030] A warning strip 515 is provided on the outer side surface of the rectangular cylinder II 54. To warn residents not to touch the box body 3 to avoid the box body 3 being electrified due to high temperature or circuit breaker failure, which may cause injury to residents.

[0031] Two holes are provided on the bottom plate 57, and a cylinder 58 is fixedly connected to each hole; a baffle I 510 is fixedly connected to the inside of each cylinder 58, and a chute 512 located below the baffle I 510 is provided on the side of the cylinder 58; the chute 512 is slidably engaged with a connecting rod 513; a connecting ring 514 is fixedly connected to one end of the connecting rod 513, and a baffle II 59 that is slidably engaged with the corresponding cylinder 58 is fixedly connected to the other end of the connecting rod 513; 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 through a bearing. Connect one of the cylinders 58 to the air extraction device to extract the harmful gases after combustion in the box body 3, and the other cylinder 58 is connected to the outside to compensate the air in the box body 3 to balance the air pressure.

[0032] A plurality of ventilation holes are provided on both the baffle I 510 and the baffle II 59, and when the baffle I 510 and the baffle II 59 are in contact, the ventilation holes on the baffle I 510 are not communicated with the ventilation holes on the baffle II 59. To prevent the box body 3 from being communicated with the outside when the baffle I 510 and the baffle II 59 are in contact, resulting in the harmful gases after combustion flowing into the corridor.

[0033] A U-shaped tube 33 is further provided on the box body 3; one end of the U-shaped tube 33 passes through the box body 3 and is communicated with the inner cavity of the housing 1, and 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. Connect the cylinder 58 for compensating gas with the inner cavity of the housing 1 through the U-shaped tube 33, so that when compensating gas, the outside gas first enters the inner cavity, driving the gas flow in the inner cavity and reducing the residue of harmful gases.

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

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

[0036] Step 2: The expansion of the gas inside the box body 3 will also push the bottom plate 57 and the rectangular cylinder II 54 to slide away from the box body 3, so as to increase the contact area between the housing 1, the box body 3 and the outside world, and then accelerate heat dissipation;

[0037] Step 3: When the open fire inside the box body 3 goes out, as the temperature decreases, the gas inside the box body 3 contracts, and under the action of air pressure, it pushes the bottom plate 57 and the rectangular cylinder II 54 to move towards the box body 3, and finally drives the U-shaped tube 33 to communicate with one of the cylinders 58;

[0038] Step 4: After the staff connects the air extraction device to the other cylinder 58, turn the bolt 511 to separate the baffle plate I 510 from the baffle plate II 59, and then use the air extraction device to extract the gas generated by combustion inside the box body 3 and the housing 1 into the storage container.

[0039] The working principle of the present invention is: When using this device, when a fire breaks out due to a short circuit inside the box body 3, the gas inside the box body 3 expands due to heat, pushing the slide plate 11 to move Figure 2 upward in the shown state, and then the air at the upper end of the slide plate 11 enters the sealing airbag 4, and the internal pressure of the sealing airbag 4 increases, so that the pressure of the sealing airbag 4 against the door 2 increases, so as to completely seal the box body 3, prevent the combustion gas from entering the corridor, and at the same time isolate oxygen. After the slide plate 11 moves upward for a certain distance, the slide plate 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 communication hole 31, it is embedded in the communication hole 31 under the action of the elastic telescopic rod 122, and 3 blocks the communication hole 31;

[0040] Meanwhile, when the box body 3 is in the normal use state, the bottom plate 57 is located at the bottom of the rectangular cylinder II 54. Therefore, when the gas inside the box body 3 expands, it will also push the bottom plate 57 at the bottom of the rectangular cylinder II 54 communicating with the box body 3 to slide away from the box body 3. The bottom plate 57 will also drive the rectangular cylinder II 54 to move together, so that the rectangular cylinder II 54 is exposed below the housing 1, increasing the contact area between the housing 1, the box body 3 and the outside world. Thus, the box body 3 can dissipate heat more quickly. At the same time, after the rectangular cylinder II 54 moves downward, the warning strip 515 on its side is exposed outside the box body 3 and the housing 1, warning residents not to touch the housing 1 and the box body 3, and notifying the staff at the same time, so as to avoid the short circuit of the wire contacting the box body 3, and when the circuit breaker is not working properly (that is, the wire is still charged), the box body 3 and the housing 1 are charged, resulting in injury to residents.

[0041] After the open fire inside the box body 3 goes out and the temperature gradually decreases, the gas inside the box body 3 contracts. Since the box body 3 is isolated from the outside world through the sealing airbag 4 after combustion inside the box body 3 and the oxygen inside the box body 3 is exhausted due to combustion, during the process of returning to normal temperature, the gas volume decreases and is less than the external air pressure. Therefore, under the action of the air pressure, it pushes the bottom plate 57 and the rectangular cylinder II 54 to move towards the box body 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 communicate with one of the cylinders 58. If the air pressure difference is not enough to drive the bottom plate 57 to move upward far enough, the staff can push the bottom plate 57 to the position where the U-shaped tube 33 communicates with one of the cylinders 58 by tools after arriving at the scene later, so as to facilitate the subsequent collection of the gas generated after combustion inside the box body 3 and the housing 1.

[0042] After the staff cuts off the power, after connecting the air extraction device with the other cylinder 58, turn the bolt 511, and the bolt 511 drives the connecting rod 513 to move downward, so that the baffle plate I 510 is separated from the baffle plate II 59. Then, after starting the air extraction device, the gas generated by combustion inside the box body 3 and the housing 1 is pumped into the storage container through the air extraction device.

[0043] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other forms of devices without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent conditions of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

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

Claims

1. An electricity meter box for electricity metering, characterized in that: It includes a housing (1) and a box body (3); the housing (1) is fixedly connected to the outside of the box body (3), and a cavity is provided inside the housing (1); a door (2) is hinged 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); through holes (32) and connection holes (31) are provided on the outer wall of the box body (3); air holes communicating with the connection holes (31) are provided on the sealing airbag (4); the through holes (32) communicate the cavity inside the housing (1) with the box body (3); a sliding plate (11) capable of sliding in the cavity is provided between the through holes (32) and the connection holes (31).

2. The electric energy metering electric meter box according to claim 1, characterized in that: A plugging device (12) is further provided in the cavity of the housing (1); the plugging device (12) includes a support rod (121); an elastic telescopic rod (122) is fixedly connected to the side surface of the vertical end of the support rod (121); a plugging block (123) capable of sealing the connection hole (31) is fixedly connected to the free end of the elastic telescopic rod (122).

3. The electric energy meter box for electric energy metering according to claim 2, characterized in that: The sliding plate (11) moves under force, pushing gas into the sealing airbag (4) to cause it to deform.

4. The electric energy metering electric meter box according to claim 2, characterized in that: The housing (1) is provided in an L shape, a through hole Ⅰ (13) is provided on the bottom surface of the horizontal end of the L-shaped housing (1), and a through hole Ⅱ (34) located above the through hole Ⅰ (13) is provided on the bottom surface of the box body (3); a sliding device (5) is fixedly connected to the inner walls of the through hole Ⅰ (13) and the through hole Ⅱ (34).

5. The electric energy metering electric meter box according to claim 4, characterized in that: The sliding device (5) includes a rectangular cylinder Ⅰ (51) fixedly connected to the inner walls of the through hole Ⅰ (13) and the through hole Ⅱ (34); a slideway Ⅰ (53) is provided on the inner wall of the rectangular cylinder Ⅰ (51), and a rectangular cylinder Ⅱ (54) slidingly matched with it is provided inside the rectangular cylinder Ⅰ (51); a slider Ⅰ (52) slidingly matched with the slideway Ⅰ (53) is fixedly connected to the outer wall of the rectangular cylinder Ⅱ (54); a bottom plate (57) slidingly matched with it is provided inside the rectangular cylinder Ⅱ (54); a slider Ⅱ (56) is fixedly connected to the side surface of the bottom plate (57), and the slider Ⅱ (56) slidingly matches with a slideway Ⅱ (55) on the inner wall of the rectangular cylinder Ⅱ (54).

6. The electric energy metering electric meter box according to claim 5, characterized in that: A warning strip (515) is provided on the outer side surface of the rectangular cylinder Ⅱ (54).

7. The electric energy meter box for electric energy metering according to claim 6, characterized in that: Two holes are provided on the bottom plate (57), and a cylinder (58) is fixedly connected to each hole; a baffle Ⅰ (510) is fixedly connected to the inside of each cylinder (58), and a chute (512) located below the baffle Ⅰ (510) is provided on the side surface of the cylinder (58); the chute (512) slidingly matches with a connecting rod (513); one end of the connecting rod (513) is fixedly connected to a connecting ring (514), and the other end of the connecting rod (513) is fixedly connected to a baffle Ⅱ (59) slidingly matched with the corresponding cylinder (58); 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) through a bearing.

8. The electric energy meter box for electric energy metering according to claim 7, characterized in that: Both the baffle plate Ⅰ (510) and the baffle plate Ⅱ (59) are provided with a plurality of ventilation holes, and when the baffle plate Ⅰ (510) and the baffle plate Ⅱ (59) are in contact, the ventilation holes on the baffle plate Ⅰ (510) are not communicated with the ventilation holes on the baffle plate Ⅱ (59).

9. The electric energy metering electric meter box according to claim 8, 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), and 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).

10. The usage method of an electric energy metering electric meter box according to claim 9, characterized in that: The usage method includes the following steps: Step 1: When a short circuit occurs and catches fire inside the box body (3), the gas inside the box body (3) expands due to heat, pushing the sliding plate (11) to move, and then expanding the sealing airbag (4), and blocking the communication hole (31) through the blocking block (123). Step 2: The expansion of the gas inside the box body (3) will also push the bottom plate (57) and the rectangular cylinder Ⅱ (54) to slide away from the box body (3) to increase the contact area between the shell (1), the box body (3) and the outside world, thereby accelerating heat dissipation. Step 3: After the open fire inside the box body (3) is extinguished, as the temperature decreases, the gas inside the box body (3) contracts, and under the action of air pressure, it pushes the bottom plate (57) and the rectangular cylinder Ⅱ (54) to move towards the box body (3), and finally drives the U-shaped tube (33) to be communicated with one of the cylinders (58). Step 4: After the staff cuts off the power, after using the air extraction device to communicate with the other cylinder (58), turn the bolt (511) to separate the baffle plate Ⅰ (510) from the baffle plate Ⅱ (59), and then use the air extraction device to pump the gas generated by combustion inside the box body (3) and the shell (1) into the storage container.

Images