Insulation explosion-proof single-phase electronic electric energy meter

Abstract

The utility model discloses an insulating explosion-proof single-phase electronic electric energy meter, which comprises an electric energy meter main body, an explosion-proof assembly and a fixing assembly, the explosion-proof assembly comprises a protective shell, the protective shell is arranged at the bottom of the front side of the electric energy meter main body, and the bottom of the inner wall of the protective shell is fixedly connected with an elastic bag. A fixing frame is fixedly connected to the front side of the inner wall of the protective shell, dry powder is arranged in the fixing frame, the fixing frame is located at the top of the elastic bag, a plurality of through openings are formed in the top and the rear side of the fixing frame and are evenly distributed, a square opening is formed in the bottom of the fixing frame, and the square opening is communicated with the elastic bag. A net plate is fixedly connected to the interior of the square opening and located on the top of the elastic bag. According to the utility model, the explosion-proof assembly is used to carry out explosion-proof protection on the electric energy meter, the sealing performance of a circuit and a connecting part of the electric energy meter is good, electric sparks generated when short circuit occurs do not pass through the housing to avoid explosion caused by the electric sparks, and the safety is high.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy meters, in particular to an insulating explosion-proof single-phase electronic electric energy meter. Background Art

[0002] An electric energy meter is an instrument used to measure electric energy. It is also called an electric meter, a fire meter, or a kilowatt-hour meter. It refers to an instrument that measures various electrical quantities. When using an electric energy meter, you should pay attention to the following: in the case of low voltage and small current, the electric energy meter can be directly connected to the circuit for measurement. In the case of high voltage or large current, the electric energy meter cannot be directly connected to the circuit and needs to be used in conjunction with a voltage transformer or a current transformer. When the electric energy meter is connected to the circuit being measured, an alternating current flows through the current coil and the voltage coil. These two alternating currents generate alternating magnetic fluxes in their iron cores respectively. The alternating magnetic flux passes through the aluminum disk and induces eddy currents in the aluminum disk. The eddy currents are acted upon by forces in the magnetic field. The aluminum disk is rotated by torque. The greater the power consumed by the load, the greater the current passing through the current coil, the greater the eddy current induced in the aluminum disk, and the greater the torque that causes the aluminum disk to rotate. That is, the magnitude of the torque is proportional to the power consumed by the load. The greater the power, the greater the torque, and the faster the aluminum disk rotates. When the aluminum disk rotates, it is affected by the braking torque generated by the permanent magnet, and the braking torque is opposite to the active torque. The magnitude of the braking torque is proportional to the rotation speed of the aluminum disk. The faster the aluminum disk rotates, the greater the braking torque. When the active torque and the braking torque reach a temporary balance, the aluminum disk will rotate at a constant speed. The electric energy consumed by the load is proportional to the number of rotations of the aluminum disk.

[0003] According to a single-phase electronic energy meter with patent number CN203773634U published on the China Patent Network, the single-phase electronic energy meter includes a shell, a working indicator light, a status indicator light, a display screen, a digital input panel, an emergency payment component, a sensing area, a speaker and a plurality of pins. The sensing area and the digital input panel are arranged in the middle of the shell, the sensing area is on the left side of the digital input panel, the display screen is arranged on the upper part of the shell, the working indicator light and the status indicator light are respectively located on both sides of the display screen, the speaker is arranged below the sensing area, the plurality of pins are arranged at the lower part of the shell, the plurality of pins are located below the speaker, the emergency payment component is arranged at the lower part of the shell, the emergency payment component includes a coin slot, a reset button and a coin outlet. The single-phase electronic energy meter is simple to operate and use, has a humanized design, can realize one-card universality, and can also use coins for emergency payment, which greatly facilitates people's daily life. However, the explosion-proof effect of the energy meter is poor, and the sealing of the connection parts between the line and the energy meter is poor. When a short circuit occurs, the electric spark generated is not only easy to pass through the shell but also easy to cause an explosion, and the safety is poor.

[0004] Therefore, it is necessary to redesign the electronic electric energy meter to effectively prevent the phenomenon of poor explosion-proof effect. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the purpose of the utility model is to provide an insulated explosion-proof single-phase electronic electric energy meter, which has the advantage of explosion-proof and solves the problem of poor explosion-proof effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an insulated explosion-proof single-phase electronic energy meter, comprising an energy meter body, an explosion-proof component and a fixing component;

[0007] The explosion-proof component includes a protective shell, which is arranged at the bottom of the front side of the electric energy meter body, an elastic bag is fixedly connected to the bottom of the inner wall of the protective shell, a fixing frame is fixedly connected to the front side of the inner wall of the protective shell, dry powder is arranged inside the fixing frame, the fixing frame is located at the top of the elastic bag, and through openings are opened on the top and the rear side of the fixing frame, the number of the through openings is several and evenly distributed, a square opening is opened at the bottom of the fixing frame, a mesh plate is fixedly connected to the inside of the square opening, and the mesh plate is located on the top of the elastic bag.

[0008] As a preferred embodiment of the utility model, the fixing assembly includes a connecting strip, the connecting strip is fixedly connected to the surface of the electric energy meter body, the protective shell is located inside the connecting strip, the connecting strip and the inside of the protective shell are threadedly connected with bolts, the front side of the protective shell is fixedly connected with an anti-sliding block, and the material of the anti-sliding block is elastic rubber.

[0009] As a preferred embodiment of the utility model, a circular hole is opened at the bottom of the protective shell, and a sealing ring is fixedly connected to the inside of the circular hole, and the sealing ring is made of elastic silicone.

[0010] As a preferred embodiment of the utility model, a protective plate is provided on the surface of the fixed frame, a magnet sheet is fixedly connected to the inside of the through opening, and the top of the magnet sheet is attracted to the bottom of the protective plate.

[0011] As a preferred embodiment of the present invention, a sealing strip is fixedly connected to the surface of the protective shell, and the sealing strip is made of elastic rubber.

[0012] As a preferred embodiment of the present invention, the protective shell and the fixing frame are both made of flame-retardant plastic, and the number of the anti-sliding blocks is two.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model uses explosion-proof components to provide explosion-proof protection for the electric energy meter. The circuit and the connecting parts of the electric energy meter have good sealing performance. When a short circuit occurs, the electric spark generated will not pass through the shell to avoid the electric spark causing an explosion, and the safety is relatively high.

[0015] 2. The utility model can install and fix the protective shell by setting a fixing component, thereby improving the explosion-proof effect of the protective shell.

[0016] 3. The utility model can seal the gap between the wire and the protective shell by providing a circular hole and a sealing ring, thereby improving the sealing performance of the protective shell.

[0017] 4. The utility model can shield the opening by arranging the protective plate and the magnet sheet, thereby improving the sealing performance of the fixed frame.

[0018] 5. The utility model can seal the gap between the protective shell and the electric energy meter body by arranging a sealing strip, thereby improving the sealing performance of the protective shell.

[0019] 6. The utility model can prevent the protective shell and the fixing frame from being ignited by setting the material of the protective shell and the fixing frame to be flame-retardant plastic, thereby improving the flame-retardant effect of the protective shell and the fixing frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the protective shell of the utility model;

[0022] Figure 3 It is a three-dimensional schematic diagram of the square mouth of the utility model.

[0023] In the figure: 1. Electric energy meter body; 2. Explosion-proof component; 201. Protective shell; 202. Elastic bag; 203. Fixed frame; 204. Through port; 205. Square port; 206. Mesh plate; 3. Fixed component; 301. Connecting strip; 302. Bolt; 303. Anti-sliding block; 4. Round hole; 5. Sealing ring; 6. Protective plate; 7. Magnet sheet; 8. Sealing strip. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figures 1 to 3 As shown, the utility model provides an insulated explosion-proof single-phase electronic energy meter, comprising an energy meter body 1, an explosion-proof component 2 and a fixing component 3;

[0026] The explosion-proof component 2 includes a protective shell 201, which is arranged at the bottom of the front side of the electric energy meter body 1. An elastic bag 202 is fixedly connected to the bottom of the inner wall of the protective shell 201, and a fixed frame 203 is fixedly connected to the front side of the inner wall of the protective shell 201. Dry powder is arranged inside the fixed frame 203. The fixed frame 203 is located at the top of the elastic bag 202. Through openings 204 are provided at the top and the rear side of the fixed frame 203. The number of through openings 204 is several and evenly distributed. A square opening 205 is provided at the bottom of the fixed frame 203. A mesh plate 206 is fixedly connected inside the square opening 205. The mesh plate 206 is located at the top of the elastic bag 202.

[0027] refer to Figure 1 The fixing component 3 includes a connecting strip 301, which is fixedly connected to the surface of the electric energy meter body 1. The protective shell 201 is located inside the connecting strip 301. The connecting strip 301 and the inside of the protective shell 201 are both threadedly connected with bolts 302. The front side of the protective shell 201 is fixedly connected with an anti-sliding block 303, and the material of the anti-sliding block 303 is elastic rubber.

[0028] As a technical optimization solution of the present invention, by providing the fixing assembly 3 , the protective shell 201 can be installed and fixed, thereby improving the explosion-proof effect of the protective shell 201 .

[0029] refer to Figure 2 A circular hole 4 is formed at the bottom of the protective shell 201, and a sealing ring 5 is fixedly connected to the inside of the circular hole 4. The sealing ring 5 is made of elastic silicone.

[0030] As a technical optimization solution of the present invention, by providing the circular hole 4 and the sealing ring 5 , the gap between the wire and the protective shell 201 can be sealed, thereby improving the sealing performance of the protective shell 201 .

[0031] refer to Figure 2 A protective plate 6 is provided on the surface of the fixed frame 203 , and a magnet sheet 7 is fixedly connected to the inside of the through opening 204 , and the top of the magnet sheet 7 is attracted to the bottom of the protective plate 6 .

[0032] As a technical optimization solution of the present invention, by providing the protection plate 6 and the magnet sheet 7, the through opening 204 can be shielded, thereby improving the sealing performance of the fixing frame 203.

[0033] refer to Figure 1 A sealing strip 8 is fixedly connected to the surface of the protective shell 201, and the sealing strip 8 is made of elastic rubber.

[0034] As a technical optimization solution of the present invention, by providing a sealing strip 8 , the gap between the protective shell 201 and the electric energy meter body 1 can be sealed, thereby improving the sealing performance of the protective shell 201 .

[0035] refer to Figure 1 The materials of the protective shell 201 and the fixing frame 203 are both flame-retardant plastic, and the number of the anti-sliding block 303 is two.

[0036] As a technical optimization solution of the utility model, by setting the materials of the protective shell 201 and the fixing frame 203 to be flame-retardant plastic, the protective shell 201 and the fixing frame 203 can be prevented from being ignited, thereby improving the flame retardant effect of the protective shell 201 and the fixing frame 203.

[0037] The working principle and use process of the utility model are as follows: during use, when the electric energy meter body 1 needs to be explosion-proof protected, the protective plate 6 is removed, the protective shell 201 is placed on the front side of the electric energy meter body 1, and the protective shell 201 is fixed by bolts 302. When the electric energy meter body 1 generates electric sparks, the electric sparks melt the elastic bag 202, and the gas in the elastic bag 202 blows up the dry powder in the fixed frame 203 through the mesh plate 206, so that the dry powder flies around to cover the position where the electric sparks are generated, thereby avoiding the occurrence of explosions, and achieving an explosion-proof effect.

[0038] In summary: the insulated explosion-proof single-phase electronic watt-hour meter uses explosion-proof components to provide explosion-proof protection for the watt-hour meter. The circuit and the watt-hour meter connection parts have good sealing properties. When a short circuit occurs, the electric spark generated will not pass through the shell to avoid the explosion caused by the electric spark. The meter has high safety and solves the problem of difficulty in explosion-proofing.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An insulated explosion-proof single-phase electronic energy meter, comprising an energy meter body (1), an explosion-proof component (2) and a fixing component (3); Features: The explosion-proof component (2) comprises a protective shell (201), the protective shell (201) being arranged at the bottom of the front side of the electric energy meter body (1), the bottom of the inner wall of the protective shell (201) being fixedly connected to an elastic bag (202), the front side of the inner wall of the protective shell (201) being fixedly connected to a fixing frame (203), the interior of the fixing frame (203) being provided with dry powder, the fixing frame (203) being located at the top of the elastic bag (202), the top and the rear side of the fixing frame (203) being provided with through openings (204), the number of the through openings (204) being several and being evenly distributed, the bottom of the fixing frame (203) being provided with a square opening (205), the interior of the square opening (205) being fixedly connected to a mesh plate (206), the mesh plate (206) being located at the top of the elastic bag (202).

2. The insulated explosion-proof single-phase electronic energy meter according to claim 1, characterized in that: The fixing assembly (3) comprises a connecting strip (301), the connecting strip (301) is fixedly connected to the surface of the electric energy meter body (1), the protective shell (201) is located inside the connecting strip (301), the connecting strip (301) and the inside of the protective shell (201) are both threadedly connected with bolts (302), and the front side of the protective shell (201) is fixedly connected with an anti-sliding block (303), and the material of the anti-sliding block (303) is elastic rubber.

3. The insulated explosion-proof single-phase electronic energy meter according to claim 1 is characterized in that: A circular hole (4) is provided at the bottom of the protective shell (201), a sealing ring (5) is fixedly connected to the inside of the circular hole (4), and the sealing ring (5) is made of elastic silicone.

4. The insulated explosion-proof single-phase electronic energy meter according to claim 1 is characterized in that: A protective plate (6) is provided on the surface of the fixing frame (203), a magnet sheet (7) is fixedly connected to the interior of the through opening (204), and the top of the magnet sheet (7) is attracted to the bottom of the protective plate (6).

5. The insulated explosion-proof single-phase electronic energy meter according to claim 1 is characterized in that: A sealing strip (8) is fixedly connected to the surface of the protective shell (201), and the sealing strip (8) is made of elastic rubber.

6. The insulated explosion-proof single-phase electronic energy meter according to claim 2, characterized in that: The protective shell (201) and the fixing frame (203) are both made of flame-retardant plastic, and the number of the anti-sliding block (303) is two.

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