A lightning protection device for an electric metering box

Abstract

The application discloses a lightning protection device for a power metering box, which comprises a base, a first isolation assembly, an extension assembly, a second isolation assembly and a lightning rod. The base has a connecting end. The first isolation assembly comprises an isolation piece and an extension piece. The isolation piece is connected with the base. The extension piece is connected with the side of the isolation piece away from the base. The extension piece is telescopically installed on the isolation piece. The extension piece, the isolation piece and the base enclose a containing space to enclose the peripheral side of the power metering box. The bottom end of the extension assembly is installed on the base. The top end side of the extension assembly is connected with the extension piece to drive the extension piece to telescopically move relative to the isolation piece. The second isolation assembly is connected with the extension piece and can be expanded or contracted along the length direction of the extension piece. The lightning rod is installed on the top end of the extension assembly. The bottom end of the lightning rod is connected with the connecting end. The application can be adjusted according to the actual size of the power metering box, provides more comprehensive lightning protection for the power metering box and reduces the risk of lightning strike.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary equipment for power meter boxes, in particular to lightning protection equipment for power meter boxes. Background Art

[0002] The power meter box is a device used for measuring electrical energy in 3-35kV power systems. It includes a combination transformer (which collects three-phase current and voltage signals), a box, a watt-hour meter, a lightning arrester, and a vacuum circuit breaker (prepaid models). The current accuracy is 0.2s, and the voltage accuracy is 0.2. The model number is generally JLSxx-xx (x replaces the actual letter), which is essentially the same as the combination transformer.

[0003] When installing and using current electricity meter boxes, there is a risk of lightning when installed outdoors. The traditional lightning protection structure is a single fixed lightning rod structure, which makes it impossible to form a comprehensive isolation effect, resulting in poor lightning protection effect. The fixed frame structure isolates the lightning protection operation, making it impossible to adjust and meet the installation and use of meter boxes of various specifications and sizes, which limits its use. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the outdoor power meter box adopts a single fixed lightning rod structure, which makes it impossible to form a comprehensive isolation effect, and the fixed frame structure isolates the lightning protection operation, making it impossible to meet the installation and use of different sizes.

[0005] In order to solve the above technical problems, the present invention provides a lightning protection device for an electric power meter box, comprising:

[0006] a base having a connection end;

[0007] A first isolation assembly includes an isolation member and an extension member, wherein the isolation member is connected to the base, the extension member is connected to a side of the isolation member facing away from the base, and the extension member is retractably mounted on the isolation member, wherein the extension member, the isolation member, and the base together form an accommodation space to enclose a circumference of the power meter box;

[0008] a telescopic assembly, the bottom end of which is mounted on the base and the side surface of the top end is connected to the extension member to drive the extension member to perform telescopic movement relative to the isolation member;

[0009] a second isolation assembly connected to the extension member and capable of expanding or contracting along the length of the extension member; and

[0010] A lightning rod is installed on the top of the telescopic component, and the bottom end of the lightning rod is connected to the connecting end.

[0011] Furthermore, the isolation member is made of an insulating material, and both the isolation member and the extension member are in a semi-enclosed structure.

[0012] Furthermore, a clamping groove is provided on a side of the base facing the isolating member, and a clamping strip is provided on a side of the isolating member facing away from the extending member, and the clamping strip is cooperatively connected with the clamping groove.

[0013] Furthermore, the extending member has guide grooves on both opposite sides, and the guide grooves are extended along the length direction of the extending member;

[0014] The second isolation component includes an extension piece, which is made of insulating material. The two ends of the extension piece are respectively connected to the opposite sides of the extension piece, and the extension piece can move along the length direction of the guide groove to switch back and forth between an expanded state and a contracted state.

[0015] Furthermore, the extension piece further has a winding groove for accommodating the extension piece, and the winding groove is connected to the guide groove;

[0016] The second isolation assembly further includes a winding rod, both ends of which are respectively mounted on the winding groove, and the extension piece is wound around the winding rod.

[0017] Furthermore, the telescopic assembly includes a support seat, a telescopic rod, a locking piece, a docking top block and a connecting rod. The support seat is connected to the base, the telescopic rod is telescopically installed on the end of the support seat away from the base, the locking piece is installed on the end of the support seat away from the base to lock the telescopic rod when it moves to a specified position, the two ends of the connecting rod are respectively connected to the extension piece and the telescopic rod, the docking top block is installed on the end of the telescopic rod away from the base, the lightning rod is installed on the docking top block, and one end of the lightning rod extends into the telescopic rod to communicate with the connecting end.

[0018] Furthermore, a connecting hole is provided on the side of the base facing the support base, and the telescopic assembly also includes a bottom screw, a conductive rod and a spring wire connected to the connecting hole, the spring wire is located in the support base, the bottom screw is installed at one end of the support base connected to the base to cooperate with the connecting hole, the conductive rod is installed on the bottom screw, and one end of the conductive rod extends into the support base and is connected to the spring wire, the other end of the conductive rod extends into the base and is connected to the connecting end, and the end of the spring wire facing away from the conductive rod is connected to the lightning rod.

[0019] Furthermore, both ends of the connecting rod are provided with mounting blocks, one side of the telescopic rod has a first buckling hole buckled with the mounting block, and one side of the extension piece has a second buckling hole buckled with the mounting block.

[0020] Furthermore, the connecting end includes a wire, a conductive connecting block, a mounting head and a sealing plate, the base has a mounting hole, the conductive connecting block and the mounting head are installed in the mounting hole, and one end of the conductive connecting block is connected to the conductive plug rod, and the other end of the conductive connecting block is connected to the mounting head, the sealing plate covers the mounting hole, and one end of the wire passes through the sealing plate and is connected to the mounting head.

[0021] Furthermore, it also includes a moving wheel, which is installed on the side of the base away from the first isolation component, and the moving wheel has a brake plate structure.

[0022] Compared with the prior art, the lightning protection device for a power meter box according to the embodiment of the present invention has the following advantages:

[0023] The embodiment of the present invention uses the telescopic setting of the telescopic component and the first isolation component and the second isolation component to enable the lightning protection equipment of the power meter box to be adjusted according to the actual size of the power meter box, ensuring good adaptability. In addition, the accommodating space formed by the first isolation component and the second isolation component, plus the lightning rod on the top, can provide more comprehensive lightning protection for the power meter box, reducing the risk of lightning strikes. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a lightning protection device for an electric power meter box provided by an embodiment of the present invention;

[0025] Figure 2 is a partial cross-sectional view of a first isolation assembly and a second isolation assembly provided by an embodiment of the present invention;

[0026] Figure 3 The edge of the base provided by the embodiment of the present invention Figure 1 Cross-sectional view in the AA direction;

[0027] Figure 4 The edge of the base provided by the embodiment of the present invention Figure 1 Cross-sectional view in the BB direction;

[0028] Figure 5 The telescopic assembly provided by the embodiment of the present invention Figure 1 BB cross-sectional view;

[0029] Figure 6 The telescopic assembly provided by the embodiment of the present invention Figure 1 CC angle cross-sectional view;

[0030] Figure 7 1 is a schematic structural diagram of a connecting rod provided by an embodiment of the present invention;

[0031] In the figure, 1. base; 11. connecting end; 111. wire; 112. conductive connecting block; 113. mounting head; 114. sealing plate; 12. snap-in groove; 13. connecting hole; 14. mounting hole; 15. bottom screw hole; 2. first isolation component; 21. isolation piece; 211. snap-in strip; 22. extension piece; 221. second buckle hole; 222. guide groove; 223. winding groove; 224. matching side block; 3. telescopic component; 31. support seat; 32. telescopic rod; 321. first buckle hole; 33. locking piece; 34. docking top block; 35. connecting rod; 36. bottom screw tube; 37. conductive plug rod; 38. spring wire; 39. mounting block; 4. second isolation component; 41. extension piece; 42. winding rod; 5. lightning rod; 6. moving wheel; 7. brake plate structure. DETAILED DESCRIPTION

[0032] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0033] like Figure 1 As shown, the present invention provides a lightning protection device for an electric meter box, comprising a base 1, a first isolation component 2, a telescopic component 3, a second isolation component 4 and a lightning rod 5; the base 1 provides a supporting function, and has a connecting end 11 for guiding lightning to a designated position for processing; the first isolation component 2 comprises an isolation member 21 and an extension member 22, the isolation member 21 is connected to the base 1, the extension member 22 is connected to the side of the isolation member 21 away from the base 1, and the extension member 22 is telescopically mounted on the isolation member 21, the extension member 22, the isolation member 21 and the base 1 enclose a accommodating space to enclose the peripheral side of the electric meter box, wherein the accommodating space can be adjusted The size of the section can surround power meter boxes of different sizes, provide physical isolation protection, and prevent lightning from directly contacting the meter box; the bottom end of the telescopic component 3 is installed on the base 1, and the side of the top is connected to the extension piece 22 to drive the extension piece 22 to perform telescopic movement relative to the isolation piece 21, so as to adjust the size of the accommodating space; the second isolation component 4 is connected to the extension piece 22, and can be expanded or contracted along the length direction of the extension piece 22, so that the second isolation component 4 is covered above the accommodating space to provide further protection; the lightning rod 5 is installed at the top of the telescopic component 3, and the bottom end of the lightning rod 5 is connected to the connecting end 11, so as to achieve a good grounding effect.

[0034] Based on the above structure, this embodiment uses the telescopic setting of the telescopic component 3 and the first isolation component 2 and the second isolation component 4 to enable the lightning protection equipment of the power meter box to be adjusted according to the actual size of the power meter box, ensuring good adaptability. In addition, the accommodating space formed by the first isolation component 2 and the second isolation component 4, plus the lightning rod 5 on the top, can provide further lightning protection for the power meter box, reducing the risk of lightning strikes.

[0035] Furthermore, the isolator 21 is made of an insulating material, effectively preventing the passage of current, thereby providing electrical isolation. Furthermore, the insulating material is an insulating colloid. Both the isolator 21 and the extension 22 have a semi-enclosed structure. Specifically, the isolator 21 and the extension 22 are arranged in a U-shaped frame, with one side of the isolator 21 and the extension 22 being open. This open side allows for easier insertion and removal of the power meter box during installation, reducing installation time and complexity. Similarly, the base 1 also has the aforementioned semi-enclosed structure.

[0036] like Figure 2 and Figure 3 As shown, a clamping groove 12 is formed on a side of the base 1 facing the isolating member 21 , and a clamping strip 211 is formed on a side of the isolating member 21 facing away from the extending member 22 . The clamping strip 211 is engaged with the clamping groove 12 .

[0037] Based on the above structure, the engagement of the snap-fit ​​strip 211 with the snap-fit ​​slot 12 allows for quick installation and removal of the isolator 21 from the base 1, simplifying the installation process, reducing installation time and labor, and making on-site installation more convenient. Furthermore, when the power meter box needs maintenance or replacement, the isolator 21 can be quickly removed, the necessary work performed, and then reinstalled, improving maintenance efficiency.

[0038] Furthermore, the extension member 22 has guide grooves 222 on opposite sides thereof, and the guide grooves 222 extend along the length of the extension member 22. The second isolation assembly 4 includes an extension member 41, which is made of an insulating material and can effectively prevent the passage of lightning current, further improving the electrical isolation effect of the lightning protection device. The two ends of the extension member 41 are respectively connected to the opposite sides of the extension member 22, and the extension member 41 can move along the length of the guide grooves 222 to switch back and forth between the expanded state and the retracted state. It should be noted that the guide grooves 222 are parallel and symmetrical to each other and are located on the inner side of the extension member 22 near the top.

[0039] The telescopic property of the lightning protection device is realized by the sliding of the extension member 41 in the guide groove 222, which not only can adapt to power metering boxes of different sizes and provide more comprehensive protection, but also is convenient for installation and maintenance, and enhances the stability and reliability of the structure. At the same time, the telescopic setting also facilitates the disassembly of the power metering box and the storage of the second isolation assembly 4.

[0040] Further, the extension member 22 has a winding groove 223 for accommodating the extension member 41, the winding groove 223 being in communication with the guide groove 222, so that the extension member 41 can be extended from the winding groove 223 and slide along the guide groove 222; the second isolation assembly 4 further comprises a winding rod 42, both ends of the winding rod 42 being respectively installed in the winding groove 223, and the extension member 41 being wound around the side of the winding rod 42, so as to expand or wind the extension member 41 by rotating the winding rod 42.

[0041] In the embodiment, the extension member 41 can be wound and stored in the winding groove 223 by the winding groove 223 and the winding rod 42, so that the extension member 41 can be compactly stored when not in use, reducing the occupied space. In addition, the extension member 41 occupies less space after winding, which is convenient for carrying and installation. Based on the above structure, the extension member 41 of the embodiment can cover a larger area in the expanded state, ensuring that the power metering box is effectively isolated and protected all around.

[0042] As shown in Figure 5 and Figure 6 , the number of telescopic assemblies 3 is two, and the two telescopic assemblies 3 are arranged in parallel with each other, which comprises a support seat 31, a telescopic rod 32, a locking member 33, an abutting top block 34 and a connecting rod 35. The support seat 31 is connected with the base 1, the telescopic rod 32 is telescopically installed at one end of the support seat 31 away from the base 1, the locking member 33 is installed at one end of the support seat 31 away from the base 1 to lock when the telescopic rod 32 moves to the specified position, ensuring that the telescopic rod 32 remains stable during use, preventing loosening or movement caused by external factors (such as wind), and the two ends of the connecting rod 35 are respectively connected with the extension member 22 and the telescopic rod 32. When the telescopic rod 32 is telescoped, the connecting rod 35 will drive the extension member 22 to move synchronously, ensuring the coordinated action of the extension member 22 and the telescopic rod 32, so that the entire lightning protection device can be adjusted in height while the extension member 22 can also be telescoped accordingly, maintaining comprehensive protection of the power metering box.

[0043] The docking top block 34 is installed at the end of the telescopic rod 32 away from the base 1, providing a stable platform for installing the lightning rod 5. The lightning rod 5 is installed on the docking top block 34, and one end of the lightning rod 5 extends into the telescopic rod 32 to communicate with the connecting end 11, ensuring a good connection between the lightning rod 5 and the ground, providing an effective lightning discharge path, and protecting the power meter box from damage by lightning. The telescopic assembly 3 of this embodiment is combined with the support base 31, the telescopic rod 32, the locking member 33, and the connecting rod 35, so that the height of the entire lightning protection device can be adjusted to adapt to power meter boxes of different heights, increasing the flexibility of the device and enabling it to be applied to different environments and equipment of different sizes. It should be noted that the lightning rod 5 is fixedly plugged in and set at the center position of the top surface of the docking top block 34, and the connecting rod 35 is made of insulating material.

[0044] See also Figure 4 A connecting hole 13 is provided on the side of the base 1 facing the support base 31. The telescopic assembly 3 also includes a bottom screw 36, a conductive plug 37 and a spring wire 38 connected to the connecting hole 13. The spring wire 38 is located in the support base 31. The bottom screw 36 is installed at one end of the support base 31 connected to the base 1 to cooperate with the connecting hole 13. The conductive plug 37 is installed on the bottom screw 36, and one end of the conductive plug 37 extends into the support base 31 and is connected to the spring wire 38, ensuring the electrical connection between the elastic wire 111 and the conductive plug 37. The other end of the conductive plug 37 extends into the base 1 and is connected to the connecting end 11, ensuring the electrical connection between the conductive plug 37 and the connecting end 11. The end of the spring wire 38 facing away from the conductive plug 37 is connected to the lightning rod 5, ensuring the electrical connection between the lightning rod 5 and the connecting end 11. In addition, the spring wire 38 is elastic and can maintain the continuity of the conductive path when the telescopic rod 32 is extended or retracted. Even if the telescopic rod 32 moves, the spring wire 38 can remain connected, ensuring that the electrical connection between the lightning rod 5 and the connection end 11 is always effective.

[0045] See also Figure 7 Both ends of the connecting rod 35 are provided with mounting blocks 39, one side of the telescopic rod 32 has a first buckle hole 321 buckled with the mounting block 39, and one side of the extension piece 22 has a second buckle hole 221 buckled with the mounting block 39.

[0046] This embodiment, through the snap-fit ​​design of the mounting block 39 with the first snap-fit ​​hole 321 and the second snap-fit ​​hole 221, allows for quick connection and removal of the connecting rod 35 from the telescopic rod 32 and the extension member 22, simplifying the installation process and reducing installation time and labor. When the power meter box needs maintenance or replacement, the connecting rod 35 can be quickly removed, the necessary work performed, and then reinstalled, improving maintenance efficiency. This embodiment utilizes a mating side block 224 on one side of the extension member 22, with a second snap-fit ​​hole 221 defined in the mating side block 224 to achieve the snap-fit ​​connection.

[0047] Furthermore, the connecting end 11 includes a wire 111, a conductive connecting block 112, a mounting head 113 and a sealing plate 114. The base 1 has a mounting hole 14. The conductive connecting block 112 and the mounting head 113 are installed in the mounting hole 14, and one end of the conductive connecting block 112 is connected to the conductive plug 37, ensuring the electrical connection between the conductive connecting block 112 and the conductive plug 37. The other end of the conductive connecting block 112 is connected to the mounting head 113, ensuring that the current is transmitted from the conductive connecting block 112 to the mounting head 113. The sealing plate 114 covers the mounting hole 14 to prevent moisture and dust from entering the interior of the base 1, protect the internal electrical connection components, and extend the service life. One end of the wire 111 passes through the sealing plate 114 and is connected to the mounting head 113, ensuring that the current is transmitted from the mounting head 113 to the designated position. It should be noted that the mounting hole 14 is located on both sides of the base 1 near the corners.

[0048] Furthermore, bottom screw holes 15 are provided on the bottom surface of the base 1, and the bottom screw holes 15 are close to the four corners. The lightning protection equipment of the power meter box also includes four moving wheels 6, so that the entire lightning protection device can be easily moved, especially during installation and transportation, reducing the difficulty and labor intensity of manual transportation. The moving wheel 6 is installed on the side of the base 1 away from the first isolation component 2, and the moving wheel 6 has a brake plate structure 7 to fix the device when needed to prevent it from accidentally moving during use.

[0049] Specifically, the isolating piece 21 is clamped and set inside the clamping groove 12 through the clamping strip 211 on the bottom surface, and the two supporting seats 31 are fixedly connected and set on the inner side of the connecting hole 13 through the bottom screw tube 36 at the bottom end, and the conductive plug 37 at the bottom end is docked and set on the top of the mounting head 113, and the two ends of the connecting rod 35 are fixedly connected and set at the first buckle hole 321 and the second buckle hole 221 of the matching side block through the mounting block 39, and after the lightning rod 5 is fixedly installed and set at the position of the docking top block 34, the telescopic rod 32 is stretched to the specified length, and after the locking piece 33 on the side is rotated, the telescopic rod 32 is fixed on the top, and the telescopic rod 32 drives the side extension piece 22 to extend to the specified height, so that the isolating piece 21 and The extension piece 22 is adjusted to the specified height size of the electric energy meter box. After pushing the base 1, the movable wheel 6 on the bottom is rotated and moved, so that the base 1 is buckled and set on the outer side of the meter box, so that the isolation piece 21 and the extension piece 22 are wrapped and set on the outer side of the meter box. After pulling the extension piece 41, it extends from the inside of the winding groove 223. After extending horizontally along the guide groove 222, the extension piece 41 is horizontally sealed at the top open end of the extension piece 22 to achieve the isolation effect. When there is lightning outside, the lightning is guided to the lightning rod 5 and then guided by the spring wire 38. The lightning is guided to the specified position through the conductive connecting block 112 and the wire 111 for processing, which effectively forms a lightning protection effect on the internal meter box.

[0050] To sum up, an embodiment of the present invention provides a lightning protection device for an electric meter box, which adopts a split structure so that it is compact and easy to carry, install and use after disassembly. At the same time, the adjustable structure can meet the use of meter boxes of various specifications and sizes, and the wrapped lightning protection structure makes the lightning protection effect better.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A lightning protection device for an electric power meter box, characterized in that: include: a base having a connection end; A first isolation assembly, comprising an isolation member and an extension member, wherein the isolation member is connected to the base, the extension member is connected to a side of the isolation member facing away from the base, and the extension member is retractably mounted on the isolation member, wherein the extension member, the isolation member, and the base together form an accommodating space to enclose a circumference of the power meter box, wherein opposite sides of the extension member each have a guide groove, and the guide groove extends along the length of the extension member; The telescopic assembly has its bottom end mounted on the base, and the side surface of the top end is connected to the extension piece to drive the extension piece to perform telescopic movement relative to the isolation piece. The telescopic assembly includes a support seat, a telescopic rod, a locking piece, a docking top block and a connecting rod. The support seat is connected to the base, and the telescopic rod is telescopically mounted on the end of the support seat away from the base. The locking piece is mounted on the end of the support seat away from the base to lock the telescopic rod when it moves to a specified position. The two ends of the connecting rod are respectively connected to the extension piece and the telescopic rod. The top block is mounted on an end of the telescopic rod facing away from the base, and a connecting hole is opened on a side of the base facing the support seat. The telescopic assembly further includes a bottom screw connected to the connecting hole, a conductive plug rod and a spring wire, the spring wire is located in the support seat, the bottom screw is mounted on an end of the support seat connected to the base to cooperate with the connecting hole, the conductive plug rod is mounted on the bottom screw, and one end of the conductive plug rod extends into the support seat to be connected to the spring wire, and the other end of the conductive plug rod extends into the base to be connected to the connecting end; a second isolation assembly connected to the extension member and capable of expanding or contracting along the length of the extension member, the second isolation assembly comprising an extension member made of an insulating material, with two ends of the extension member respectively connected to opposite sides of the extension member, and the extension member being movable along the length of the guide slot to switch back and forth between an expanded state and a contracted state; and A lightning rod is installed at the top of the telescopic assembly, and the bottom end of the lightning rod is connected to the connecting end, wherein the lightning rod is installed on the docking top block, and one end of the lightning rod extends into the telescopic rod to communicate with the connecting end, and the end of the spring wire facing away from the conductive plug is connected to the lightning rod.

2. The lightning protection device for the electric power meter box according to claim 1, characterized in that: The isolating member is made of insulating material, and both the isolating member and the extending member are in a semi-enclosed structure.

3. The lightning protection device for the electric power meter box according to claim 2, characterized in that: A clamping groove is provided on a side of the base facing the isolating member, and a clamping strip is provided on a side of the isolating member facing away from the extending member. The clamping strip is matched and connected with the clamping groove.

4. The lightning protection device for the electric power meter box according to claim 1, characterized in that: The extension piece further comprises a winding groove for accommodating the extension piece, and the winding groove is communicated with the guide groove; The second isolation assembly further includes a winding rod, both ends of which are respectively mounted on the winding groove, and the extension piece is wound around the winding rod.

5. The lightning protection device for the electric power meter box according to claim 1, characterized in that: Both ends of the connecting rod are provided with mounting blocks, one side of the telescopic rod has a first buckling hole buckled with the mounting block, and one side of the extending piece has a second buckling hole buckled with the mounting block.

6. The lightning protection device for the electric power meter box according to claim 1, characterized in that: The connecting end includes a wire, a conductive connecting block, a mounting head and a sealing plate. The base has a mounting hole. The conductive connecting block and the mounting head are installed in the mounting hole. One end of the conductive connecting block is connected to the conductive plug rod, and the other end of the conductive connecting block is connected to the mounting head. The sealing plate covers the mounting hole, and one end of the wire passes through the sealing plate and is connected to the mounting head.

7. The lightning protection device for the electric power meter box according to claim 1, characterized in that: It also includes a moving wheel, which is installed on a side of the base away from the first isolation component, and the moving wheel has a brake plate structure.

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