Insulation explosion-proof intelligent electric energy meter

Abstract

The utility model discloses an insulating explosion-proof intelligent electric energy meter, which belongs to the technical field of electric energy meters and comprises an insulating explosion-proof shell, a single-phase electronic electric energy meter component is arranged in an inner cavity of the insulating explosion-proof shell, a fan is mounted on the top surface of the insulating explosion-proof shell, and an air inlet is arranged on the top surface of the insulating explosion-proof shell and positioned below the fan. The two side faces of the insulating explosion-proof shell are each provided with an air outlet used for air circulation, bottom blocks are welded to the two side faces of the insulating explosion-proof shell, the top faces of the two bottom blocks are rotationally connected with threaded shafts through pin shafts, and the peripheral sides of the two threaded shafts are sleeved with first plugging blocks used for plugging the air outlets in a threaded mode. A second plugging block for plugging the air inlet is arranged on the inner top surface of the insulating explosion-proof shell, and driving assemblies for driving the first plugging block and the second plugging block to move are mounted on the two side surfaces of the insulating explosion-proof shell. According to the insulated explosion-proof intelligent electric energy meter, the problem that oxygen easily enters the insulated explosion-proof shell through the exhaust outlet is solved, and the fire spreading efficiency is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of electricity meter technology, and in particular to an insulated explosion-proof smart electricity meter. Background Technology

[0002] An electricity meter is an instrument used to measure electrical energy. It is also called an electricity meter, fire meter, or kilowatt-hour meter. It refers to an instrument that measures various electrical quantities. Current explosion-proof methods for electricity meters generally involve installing a highly stable explosion-proof enclosure to resist explosions and using heat dissipation holes to reduce temperature. However, most explosion-proof enclosures now lack sealing components for the heat dissipation holes. As a result, when an electricity meter catches fire due to a circuit break, external oxygen can enter the enclosure through the heat dissipation holes, failing to provide a flame-retardant effect and thus intensifying the fire.

[0003] An existing Chinese patent (authorization announcement number CN210323152U) discloses an explosion-proof energy meter with a built-in heat dissipation switch, which "includes an energy meter assembly, an explosion-proof housing assembly, and a junction box. The explosion-proof housing assembly includes a housing and a door. One side of the housing is an opening, and the door is hinged to the side opening of the housing. The door can be tightly closed within the housing. There is a mounting hole at each of the four corners of the back of the energy meter assembly."

[0004] It is evident that the cited patent document has the problem that external oxygen can easily intensify the fire. Utility Model Content

[0005] The purpose of this utility model is to provide an insulated and explosion-proof smart energy meter to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an insulated explosion-proof smart energy meter, comprising an insulated explosion-proof shell, a single-phase electronic energy meter assembly disposed within the inner cavity of the insulated explosion-proof shell, a fan mounted on the top surface of the insulated explosion-proof shell, an air inlet disposed on the top surface of the insulated explosion-proof shell below the fan, exhaust vents for air circulation on both sides of the insulated explosion-proof shell, base blocks welded to both sides of the insulated explosion-proof shell, threaded shafts rotatably connected to the top surfaces of the two base blocks via pins, first sealing blocks for sealing the exhaust vents being threadedly fitted around the periphery of the two threaded shafts, a second sealing block for sealing the air inlet disposed on the inner top surface of the insulated explosion-proof shell, and drive components for moving the first and second sealing blocks mounted on both sides of the insulated explosion-proof shell.

[0007] Preferably, the drive assembly includes two connecting brackets, a threaded rod, two first conical teeth, and two second conical teeth, with the two connecting brackets respectively mounted on the two sides of the insulating explosion-proof shell.

[0008] Preferably, the threaded rod is rotatably connected to the two opposite sides of the two connecting brackets by a pin, and the center of the threaded rod is located in the inner cavity of the insulating explosion-proof shell.

[0009] Preferably, the second sealing block is threaded onto the periphery of the threaded rod, and both of the first conical teeth are fixedly fitted onto the periphery of the threaded rod.

[0010] Preferably, the two second conical teeth are respectively installed at the top ends of the two threaded shafts, and the two first conical teeth respectively mesh with the two second conical teeth.

[0011] Preferably, limiting plates are welded to both sides of the insulating explosion-proof shell, and the top surfaces of the two limiting plates are respectively provided with through holes for the threaded shaft to pass through.

[0012] Preferably, bearings are installed on the inner walls of both through holes, and the circumference of the top ends of the two threaded shafts respectively passes through the bearings and is connected and fixed to the inner walls of the bearings.

[0013] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0014] This insulated explosion-proof smart energy meter, by rotating the threaded shaft, provides power for the movement of the first sealing block, which in turn moves the first sealing block to the exhaust vent to block the vent and isolate it from external oxygen. Compared with existing devices that dissipate heat from the energy meter, this device can dissipate heat through the exhaust vent under normal conditions, and can block the exhaust vent in the event of a fire caused by a circuit breaker, thereby achieving the effects of flame retardancy and preventing the spread of fire.

[0015] By setting up the drive component, power can be provided to rotate the threaded shaft, enabling the movement of the first sealing block and the second sealing block, thereby sealing the air inlet. The welded slider can limit the movement trajectory of the first and second sealing blocks to prevent deviation. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a side sectional view of the explosion-proof insulating shell of this utility model;

[0019] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A;

[0020] Figure 4 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point B.

[0021] Explanation of reference numerals in the attached figures:

[0022] In the diagram: 1. Insulating explosion-proof shell; 2. Single-phase electronic energy meter assembly; 3. Fan; 4. Air inlet; 5. Air outlet; 6. Base block; 7. Threaded shaft; 8. First sealing block; 9. Second sealing block; 10. Connecting frame; 11. Threaded rod; 12. First conical tooth; 13. Second conical tooth; 14. Slider; 15. Limiting plate; 16. Through hole; 17. Bearing. Detailed Implementation

[0023] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0024] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0025] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0026] like Figures 1 to 4 The invention shown is an insulated explosion-proof smart energy meter, which includes an insulated explosion-proof housing 1. The inner cavity of the insulated explosion-proof housing 1 is provided with a single-phase electronic energy meter assembly 2. The single-phase electronic energy meter assembly 2 is installed in the insulated explosion-proof housing 1 by bolts. An insulated explosion-proof door is connected to one side of the insulated explosion-proof housing 1 by a hinge.

[0027] A fan 3 is installed on the top surface of the insulating explosion-proof housing 1. An air inlet 4 is provided on the top surface of the insulating explosion-proof housing 1 and below the fan 3. Air outlets 5 for air circulation are provided on both sides of the insulating explosion-proof housing 1. By turning on the fan 3, air can be blown into the insulating explosion-proof housing 1 through the air inlet 4 to dissipate heat from the single-phase electronic energy meter assembly 2. The air entering the insulating explosion-proof housing 1 can be discharged from the air outlets 5 to achieve air circulation.

[0028] Both sides of the insulating explosion-proof housing 1 are welded with base blocks 6. The top surfaces of the two base blocks 6 are rotatably connected to threaded shafts 7 via pins. The periphery of the two threaded shafts 7 is threaded with first sealing blocks 8 for sealing the exhaust vents 5. By rotating the two threaded shafts 7, the two threaded shafts 7 can respectively drive the first sealing blocks 8 to move downwards, so that the two first sealing blocks 8 can move to one side of the exhaust vents 5 to seal the exhaust vents 5, thereby isolating external oxygen and preventing external oxygen from entering the insulating explosion-proof housing 1 through the exhaust vents 5 and increasing the fire intensity.

[0029] The inner top surface of the insulating explosion-proof shell 1 is provided with a second sealing block 9 that blocks the air inlet 4. Drive assemblies for moving the first sealing block 8 and the second sealing block 9 are installed on both sides of the insulating explosion-proof shell 1. The drive assemblies include two connecting frames 10, a threaded rod 11, two first conical teeth 12, and two second conical teeth 13. The two connecting frames 10 are respectively installed on both sides of the insulating explosion-proof shell 1. The threaded rod 11 is rotatably connected to the two opposite sides of the two connecting frames 10 via a pin. A motor is installed on one side of one of the connecting frames 10. The output end of the motor passes through the connecting frame 10 and is fixedly connected to one end of the threaded rod 11. The center of the threaded rod 11 is located in the inner cavity of the insulating explosion-proof shell 1. The second sealing block 9 is threadedly sleeved on the periphery of the threaded rod 11. Both first conical teeth 12 are fixedly sleeved on the periphery of the threaded rod 11. The two second conical teeth 13 are... Do not install on the top of the two threaded shafts 7. The two first conical teeth 12 mesh with the two second conical teeth 13 respectively. By turning on the motor, the threaded rod 11 can be rotated, thereby driving the second sealing block 9 to move. When the second sealing block 9 moves, it will synchronously drive the two first conical teeth 12 to rotate. Since the first conical teeth 12 and the second conical teeth 13 mesh with each other, the two first conical teeth 12 will drive the two second conical teeth 13 to rotate, thereby driving the two threaded shafts 7 to rotate. When the second sealing block 9 moves, the two first sealing blocks 8 will also move synchronously. After the first sealing block 8 blocks the exhaust port 5, the second sealing block 9 will block the air inlet 4, thereby further isolating the external oxygen and preventing the external oxygen from entering the insulating explosion-proof shell 1 through the air inlet 4 and the exhaust port 5, thus failing to achieve the flame-retardant effect.

[0030] The motor is connected to an external controller (not shown) via the existing PLC control system, allowing personnel to start the motor through the controller.

[0031] Two sliders 14 are symmetrically welded to both sides and the inner top surface of the insulating explosion-proof shell 1. Two first sealing blocks 8 and two second sealing blocks 9 are respectively slidably sleeved on the periphery of the two sliders 14, so that when the first sealing blocks 8 and the second sealing blocks 9 move, they will move on the periphery of the sliders 14 respectively, which can limit the movement trajectory of the first sealing blocks 8 and the second sealing blocks 9 and prevent deviation.

[0032] Limiting plates 15 are welded to both sides of the insulating explosion-proof shell 1. The top surfaces of the two limiting plates 15 are respectively provided with through holes 16 for threaded shafts 7 to pass through. Bearings 17 are installed on the inner walls of the two through holes 16. The outer walls of the two bearings 17 are respectively connected and fixed to the inner walls of the two through holes 16. The periphery of the top ends of the two threaded shafts 7 passes through the bearings 17 and is connected and fixed to the inner walls of the bearings 17. When the threaded shafts 7 rotate, they will drive the inner ring of the bearings 17 to rotate, so that the bearings 17 can support the position of the threaded shafts 7 and also assist in the rotation.

[0033] Working principle:

[0034] This insulated explosion-proof smart energy meter uses bolts to install a single-phase electronic energy meter assembly 2 inside an insulated explosion-proof housing 1. By turning on the fan 3, air is blown into the insulated explosion-proof housing 1 through the air inlet 4 to dissipate heat from the single-phase electronic energy meter assembly 2. The air entering the insulated explosion-proof housing 1 can be exhausted through the exhaust vent 5, achieving air circulation. If the single-phase electronic energy meter assembly 2 catches fire due to a circuit break, the motor is turned on by an external controller, which drives the threaded rod 11 to rotate, thereby moving the second sealing block 9. Simultaneously, it drives the two first conical teeth 12 to rotate, which in turn drives the two second conical teeth 13 to rotate, thereby rotating the two threaded shafts 7. This causes the two first sealing blocks 8 to move, so that the two first sealing blocks 8 and the second sealing blocks 9 can respectively seal the air inlet 4 and the exhaust vent 5, thus isolating external oxygen and preventing external oxygen from entering the insulated explosion-proof housing 1 through the exhaust vent 5 and intensifying the fire.

[0035] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An insulating explosion-proof intelligent electric energy meter, comprising an insulating explosion-proof shell (1), characterized in that: The inner cavity of the insulating explosion-proof shell (1) is provided with a single-phase electronic energy meter assembly (2). A fan (3) is installed on the top surface of the insulating explosion-proof shell (1). An air inlet (4) is provided on the top surface of the insulating explosion-proof shell (1) and below the fan (3). An exhaust port (5) for air circulation is provided on both sides of the insulating explosion-proof shell (1). A base block (6) is welded on both sides of the insulating explosion-proof shell (1). A threaded shaft (7) is rotatably connected to the top surface of the two base blocks (6) through a pin. A first sealing block (8) for sealing the exhaust port (5) is threaded on the periphery of the two threaded shafts (7). A second sealing block (9) for sealing the air inlet (4) is provided on the inner top surface of the insulating explosion-proof shell (1). A drive assembly for driving the first sealing block (8) and the second sealing block (9) to move is installed on both sides of the insulating explosion-proof shell (1).

2. The insulating explosion-proof intelligent electric energy meter according to claim 1, characterized in that: The drive assembly includes two connecting frames (10), a threaded rod (11), two first conical teeth (12) and two second conical teeth (13), with the two connecting frames (10) respectively installed on the two sides of the insulating explosion-proof shell (1).

3. The insulating explosion-proof intelligent electric energy meter of claim 2, characterized in that: The threaded rod (11) is rotatably connected to the two opposite sides of the two connecting frames (10) by a pin, and the center of the threaded rod (11) is located in the inner cavity of the insulating explosion-proof shell (1).

4. The insulating explosion-proof intelligent electric energy meter of claim 3, characterized in that: The second sealing block (9) is threaded onto the periphery of the threaded rod (11), and the two first conical teeth (12) are fixedly fitted onto the periphery of the threaded rod (11).

5. The insulating explosion-proof intelligent electric energy meter according to claim 4, characterized in that: Two second conical teeth (13) are respectively installed on the top of two threaded shafts (7), and two first conical teeth (12) respectively mesh with two second conical teeth (13).

6. The insulating explosion-proof intelligent electric energy meter of claim 1, wherein: Limiting plates (15) are welded to both sides of the insulating explosion-proof shell (1), and the top surfaces of the two limiting plates (15) are respectively provided with through holes (16) for the threaded shaft (7) to pass through.

7. The insulating explosion-proof intelligent electric energy meter according to claim 6, characterized in that: Bearings (17) are installed on the inner walls of the two through holes (16), and the circumference of the top ends of the two threaded shafts (7) pass through the bearings (17) and are connected and fixed to the inner walls of the bearings (17).

Images