Three-phase electric energy meter anti-disassembly housing and magnetic shielding integrated structure

Abstract

The present invention relates to the technical field of three-phase electric energy meters, and discloses an integrated structure of a three-phase electric energy meter with an anti-disassembly shell and a magnetic shield, including a three-phase electric energy meter body; a main shielding cover is supported by a supporting back plate, and external electromagnetic interference is suppressed by the main shielding cover to ensure metering stability under high-frequency harmonics; bolts are hiddenly protected by protective plates to reduce the impact of external liquid particulate contamination on the connection tightness of the bolts; at the same time, a connection groove is opened by using a specific tool to remove and install the bolts on the inner side of the main mounting hole, thereby avoiding external visible fixing points, preventing unauthorized disassembly, and improving the safety of the three-phase electric energy meter; at the same time, a heat exchange plate is used to cool the three-phase electric energy meter body, thereby improving the temperature stability of the three-phase electric energy meter body, and two annular plates are used to fit the power cord to reduce the loosening of the interface caused by the shaking of the power cord; the cooling liquid in the annular plate is used to cool the surface of the power cord to reduce the temperature of the power cord.

Description

Technical Field

[0001] The present invention relates to the technical field of three-phase electric energy meters, and in particular to an integrated structure of a three-phase electric energy meter with an anti-disassembly housing and a magnetic shield. Background Art

[0002] A three-phase electricity meter is an instrument used to measure the electrical energy consumption in a three-phase AC circuit. It can simultaneously monitor parameters such as three-phase voltage, current, and power, and calculate total electricity consumption. It is an important metering device in the power system and is widely used in industrial, commercial, and large-scale infrastructure fields. Three-phase electricity meters not only perform the basic function of accurate billing, but also improve energy utilization efficiency and ensure electricity safety through data analysis, and assist in the construction of smart grids.

[0003] At present, the wiring terminals of some three-phase electricity meters are protected by wiring protection covers fixed with screws, which have the advantages of dustproof, anti-interference and anti-electric shock. However, since the wiring protection cover is installed on the three-phase electricity meter with screws, outsiders can easily remove it with tools, resulting in risks such as damage to internal equipment and electric shock, greatly reducing the safety of the three-phase electricity meter; removing the wiring protection cover with tools is relatively cumbersome and will also increase the workload of the staff.

[0004] Based on the above technical problems, the existing technology has also provided some solutions. For example, the Chinese patent with the authorization announcement number CN119104761B discloses a three-phase electric energy meter, which includes: a main body mechanism, the main body mechanism includes a meter body, and the lower end surface of the meter body is provided with a wiring groove; an on-off mechanism is installed inside the meter body, and the on-off mechanism includes a conductive wire, and a conductive hoop is slidably connected to the outside of the conductive wire, and an insulating sleeve is sleeved between each two conductive hoops; a wiring mechanism is installed in the wiring groove, and the wiring mechanism includes a wiring block, and a wire insertion hole is provided through the wiring block, and a power transmission line is installed in each of the wire insertion holes; a protective mechanism is installed in the wiring groove, and the protective mechanism includes a protective plate; a pressure-touch mechanism is provided on the top of the protective plate, and the pressure-touch mechanism includes a rotating head. The present application has the advantages that the switch of the wiring protection cover can be controlled by sliding, and sliding the wiring protection cover open can cut off the connection of the wiring terminal;

[0005] However, in actual production operations, existing three-phase electricity meters will be affected by the surrounding magnetic field during use. Strong electromagnetic fields will couple to the signal lines of the sensors, causing the sampled values ​​to deviate from the true values, thereby causing errors in the calculation of active power and reactive power. At the same time, long-term electromagnetic interference will cause the performance of the filter elements to degrade and reduce the anti-interference ability. In addition, the existing three-phase electricity meters have low protection, are easy to be disassembled privately, and have low safety. Summary of the Invention

[0006] The purpose of the present invention is to provide an integrated structure of a three-phase electricity meter with an anti-disassembly housing and a magnetic shield, which solves the problem proposed in the background technology that a strong electromagnetic field will couple to the signal line of the sensor, causing the sampling value to deviate from the true value, thereby causing errors in the calculation of active power and reactive power. At the same time, long-term electromagnetic interference will cause the performance of the filter element to degrade and reduce the anti-interference ability.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] The three-phase electricity meter has an anti-disassembly shell and a magnetic shielding integrated structure, including a three-phase meter body, one side of the three-phase meter body is fixedly connected to a power line, one side of the three-phase meter body is provided with a support back plate, one side of the support back plate is provided with a main shielding cover, one side of the support back plate is provided with a main mounting hole, one side of the main shielding cover is provided with a secondary mounting hole, both sides of the support back plate are provided with connecting grooves, the inner side of the connecting groove is provided with a side limiting square groove, the inner side of the connecting groove is provided with a protective plate, the surface of the protective plate is provided with an inner connecting square groove, the inner side of the inner connecting square groove is provided with a top limiting spring, the top of the top limiting spring is fixedly connected with a special-shaped limiting column, one side of the special-shaped limiting column is an inclined surface, and the inclined surface of the special-shaped limiting column faces one side of the support back plate.

[0009] Preferably, an adjustment hole is provided on the top of the special-shaped limiting column, and a side connecting frame is provided on one side of the side limiting square groove.

[0010] Preferably, a side friction block is fixedly connected to one side of the protective plate, and there are multiple side friction blocks.

[0011] Preferably, a glass plate is fixedly connected to the inner side of the main shielding cover, a main clamping groove is fixedly connected to one side of the main shielding cover, an inner sliding rail is provided on the inner side of the main clamping groove, a shielding plate is slidably connected to the inner side of the inner sliding rail, and a main friction block is fixedly connected to the surface of the shielding plate.

[0012] Preferably, a magnetic plate is fixedly connected to the top of the shielding plate, and a top metal block is fixedly connected to one side of the main shielding cover.

[0013] Preferably, one side of the supporting back plate is fixedly connected to a top liquid storage tank, one side of the top liquid storage tank is fixedly connected to a liquid outlet pump, one side of the liquid outlet pump is fixedly connected to a top connecting pipe, one end of the top connecting pipe is fixedly connected to a heat dissipation box, one side of the heat dissipation box is fixedly connected to a side connecting pipe, one end of the side connecting pipe is fixedly connected to a heat exchange box, one side of the heat exchange box is fixedly connected to a heat exchange plate, an external connecting frame is provided on one side of the main shielding cover, and a side groove is provided on one side of the three-phase meter body.

[0014] Preferably, one side of the heat dissipation box is fixedly connected to a heat sink, one side of the heat dissipation box is fixedly connected to a bottom connecting pipe, one end of the bottom connecting pipe is fixedly connected to a first liquid storage tank, one side of the first liquid storage tank is fixedly connected to a circulation pipe, one side of the circulation pipe is fixedly connected to a second liquid storage tank, one side of the second liquid storage tank is fixedly connected to a circulation pump, and one side of the circulation pump is fixedly connected to a return liquid pipe.

[0015] Preferably, the bottom of the main shielding cover is fixedly connected to a bottom shielding box, and the bottom of the bottom shielding box is fixedly connected to a magnetic ring.

[0016] Preferably, one side of the first liquid storage tank and one side of the second liquid storage tank are both fixedly connected with a connecting pipe, one end of the connecting pipe is fixedly connected with an annular sheet, and bottom connecting holes are opened on both sides of the bottom shielding box.

[0017] Preferably, one side of the annular sheet is fixedly connected to a connecting rod, one end of the connecting rod is fixedly connected to an adjustment plate, and one side of the adjustment plate is fixedly connected to a bottom limit spring.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The main shielding cover is supported by the supporting back plate, which suppresses external electromagnetic interference and ensures metering stability under high-frequency harmonics. At the same time, the movable shielding plate is used, so there is no need to remove the entire supporting back plate when observing the three-phase meter body. The shielding plate is used to cover the glass plate during daily placement, thereby improving the overall anti-electromagnetic interference performance of the supporting back plate.

[0020] 2. By aligning the main mounting hole on the surface of the support back plate with the reserved hole on the wall, the main mounting hole and the reserved hole on the wall are connected with external bolts, and the support back plate is firmly installed on one side of the wall. After the support back plate is fixed, the bolts are hidden and protected by a protective plate to reduce the risk of contamination by external liquid particles affecting the tightness of the connection. At the same time, by using a specific tool to open the connection groove and remove and install the bolts inside the main mounting hole, external visible fixing points are avoided, preventing unauthorized disassembly and improving the safety of the three-phase electricity meter.

[0021] 3. The three-phase electric meter body is cooled by using a continuously cooling heat exchanger, which improves the temperature stability of the three-phase electric meter body when it is protected in the main shielding cover and reduces the situation of continuous temperature rise. At the same time, the surface of the heat sink increases the heat dissipation area through the heat sink, and the heat sink is used to improve the heat dissipation effect of the heat sink, maintaining the stability of the temperature of the liquid entering the heat sink. The circulating pump is started to drive the coolant in the second liquid storage tank to flow along the return pipe back to the top liquid storage tank to form a circulation, thereby improving the cooling effect of the coolant in the top liquid storage tank on the three-phase electric meter body;

[0022] 4. After the two annular pieces are opened along the inner side of the bottom shielding box, the position of the power cord inside the bottom shielding box is adjusted. After the power cord is adjusted to a vertical state, the adjustment plate is released. At this time, the bottom limit spring loses its external force limit and pushes the connecting rod to move along the inner side of the bottom connecting hole. At the same time, the annular piece is brought into contact with the surface of the power cord. The two annular pieces are used to fit the power cord and limit the power cord, thereby reducing the loosening of the interface caused by the power cord shaking in the bottom shielding box due to external collision.

[0023] 5. At the same time, when the liquid flows along the inner side of the first liquid storage tank and the second liquid storage tank, it will flow along the connecting pipe to the inner side of the annular plate. The annular plate is hollow. The coolant continues to cool down after entering the inner side of the annular plate. After the annular plate is used to fit and limit the surface of the power cord, the coolant in the annular plate is used to cool down the surface of the power cord, thereby reducing the temperature rise of the power cord caused by long-term work, improving the stability of the long-term working temperature after the power cord is connected to the three-phase meter body, and extending the service life of the power cord. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall appearance structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall separation structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the main shielding cover structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the supporting backboard structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the main mounting hole structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the special-shaped limiting column of the present invention;

[0030] Figure 7 Schematic diagram of the heat exchange plate structure of the present invention;

[0031] Figure 8 It is a schematic structural diagram of the heat dissipation box of the present invention;

[0032] Figure 9 This is a schematic structural diagram of the second liquid storage tank of the present invention.

[0033] Among them: 1. Three-phase meter body; 2. Power cord; 301. Support back plate; 302. Main shielding cover; 303. Glass plate; 304. Main snap-in slot; 305. Inner sliding rail; 306. Shielding plate; 307. Main friction block; 308. Magnetic plate; 309. Top metal block; 401. Main mounting hole; 402. Secondary mounting hole; 403. Connecting slot; 404. Protective plate; 405. Side friction block; 406. Side limiting square slot; 407. Side connecting frame; 408. Inner connecting square slot; 409. Top limiting spring; 4010. Special-shaped limiting column; 4011. Adjustment hole; 5. Magnetic ring; 6. 01. Top liquid storage tank; 602. Liquid discharge pump; 603. Top connecting pipe; 604. Heat dissipation box; 605. Heat sink; 606. External connecting frame; 607. Side connecting pipe; 608. Heat exchange box; 609. Heat exchange fin; 6010. Bottom connecting pipe; 6011. First liquid storage tank; 6012. Circulation pipe; 6013. Second liquid storage tank; 6014. Circulation pump; 6015. Liquid return pipe; 6016. Side groove; 701. Bottom shielding box; 702. Bottom connecting hole; 703. Connecting pipe; 704. Ring plate; 705. Connecting rod; 706. Adjustment plate; 707. Bottom limit spring. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figure 1-9 The three-phase electric energy meter has an anti-disassembly shell and a magnetic shielding integrated structure, including a three-phase electric energy meter body 1, a power line 2 is fixedly connected to one side of the three-phase electric energy meter body 1, a supporting back plate 301 is provided on one side of the supporting back plate 301, a main shielding cover 302 is provided on one side of the supporting back plate 301, a main mounting hole 401 is provided on one side of the supporting back plate 301, a secondary mounting hole 402 is provided on one side of the main shielding cover 302, and connecting grooves 403 are provided on both sides of the supporting back plate 301. A side limiting square groove 406 is provided on the inner side of the connecting groove 403, a protective plate 404 is provided on the inner side of the connecting groove 403, an inner connecting square groove 408 is provided on the surface of the protective plate 404, a top limiting spring 409 is provided on the inner side of the inner connecting square groove 408, and a special-shaped limiting column 4010 is fixedly connected to the top of the top limiting spring 409, one side of the special-shaped limiting column 4010 is an inclined surface, and the inclined surface of the special-shaped limiting column 4010 is facing the side of the supporting back plate 301.

[0036] It should be noted that when the special-shaped limit column 4010 moves, it will drive the top limit spring 409 to produce compression deformation and enter the inner side of the internal connecting square groove 408. At this time, after the special-shaped limit column 4010 moves out of the inner side of the side limit square groove 406, the protective plate 404 loses its limit and can freely move out of the inner side of the connecting groove 403. After fixing the supporting back plate 301, the bolts are hiddenly protected by the protective plate 404 to reduce the contamination of the bolts by external liquid particles and affect the connection tightness.

[0037] In an optional embodiment, an adjustment hole 4011 is provided on the top of the special-shaped limiting column 4010 , and a side connecting frame 407 is provided on one side of the side limiting square groove 406 .

[0038] It should be noted that when the protective plate 404 slides along one side of the connecting groove 403, the special-shaped limiting column 4010 on the top of the protective plate 404 will contact one side of the connecting groove 403. One side of the special-shaped limiting column 4010 is an inclined surface. After the inclined surface of the special-shaped limiting column 4010 contacts the connecting groove 403, as the protective plate 404 continues to push, it will drive the special-shaped limiting column 4010 to move downward and enter the inner side of the internal connecting square groove 408.

[0039] In an optional embodiment, a side friction block 405 is fixedly connected to one side of the protective plate 404 , and there are multiple side friction blocks 405 .

[0040] It should be noted that by pushing the protective plate 404 along one side of the connecting groove 403 , the side friction block 405 on the surface of the protective plate 404 is used to increase the friction force and improve the stability of the movement of the protective plate 404 .

[0041] In an optional embodiment: a glass plate 303 is fixedly connected to the inner side of the main shielding cover 302, a main snap-in groove 304 is fixedly connected to one side of the main shielding cover 302, an inner sliding rail 305 is provided on the inner side of the main snap-in groove 304, a shielding plate 306 is slidably connected to the inner side of the inner sliding rail 305, and a main friction block 307 is fixedly connected to the surface of the shielding plate 306.

[0042] It should be noted that the operator presses the main friction block 307 on the surface of the shielding plate 306, and uses multiple main friction blocks 307 to increase the friction between the skin and the surface of the shielding plate 306. After pressing the main friction block 307, the shielding plate 306 is pushed upward, and the shielding plate 306 is moved vertically upward along the inner side of the main clamping groove 304, exposing the glass plate 303. The glass plate 303 can be used to portable observe the data displayed on the surface of the three-phase electric meter body 1.

[0043] In an optional embodiment, a magnetic plate 308 is fixedly connected to the top of the shielding plate 306 , and a top metal block 309 is fixedly connected to one side of the main shielding cover 302 .

[0044] It should be noted that by driving the magnetic plate 308 on the top of the shielding plate 306 to contact the surface of the top metal block 309, and utilizing the magnetic connection between the magnetic plate 308 and the top metal block 309, the shielding plate 306 is limited to the bottom of the top metal block 309, thereby improving the stability of the shielding plate 306.

[0045] In an optional embodiment: one side of the supporting back plate 301 is fixedly connected to a top liquid storage tank 601, one side of the top liquid storage tank 601 is fixedly connected to a liquid outlet pump 602, one side of the liquid outlet pump 602 is fixedly connected to a top connecting pipe 603, one end of the top connecting pipe 603 is fixedly connected to a heat dissipation box 604, one side of the heat dissipation box 604 is fixedly connected to a side connecting pipe 607, one end of the side connecting pipe 607 is fixedly connected to a heat exchange box 608, one side of the heat exchange box 608 is fixedly connected to a heat exchange plate 609, an external connecting frame 606 is provided on one side of the main shielding cover 302, and a side groove 6016 is provided on one side of the three-phase meter body 1.

[0046] It should be noted that one side of the heat exchange plate 609 is in contact with the side groove 6016 on one side of the three-phase meter body 1. The heat exchange plate 609 with continuous cooling is used to cool the three-phase meter body 1, thereby improving the temperature stability of the three-phase meter body 1 when it is protected in the main shielding cover 302 and reducing the situation where the temperature continues to rise.

[0047] In an optional embodiment: one side of the heat sink 604 is fixedly connected to a heat sink 605, one side of the heat sink 604 is fixedly connected to a bottom connecting pipe 6010, one end of the bottom connecting pipe 6010 is fixedly connected to a first liquid storage tank 6011, one side of the first liquid storage tank 6011 is fixedly connected to a circulation pipe 6012, one side of the circulation pipe 6012 is fixedly connected to a second liquid storage tank 6013, one side of the second liquid storage tank 6013 is fixedly connected to a circulation pump 6014, and one side of the circulation pump 6014 is fixedly connected to a return liquid pipe 6015.

[0048] It should be noted that through the connection of the circulation pipe 6012, the liquid will enter the second liquid storage tank 6013, and through the activation of the circulation pump 6014, the coolant in the second liquid storage tank 6013 is driven to flow along the return pipe 6015 back to the top liquid storage tank 601 to form a circulation, thereby improving the effect of the coolant in the top liquid storage tank 601 on cooling the three-phase meter body 1.

[0049] In an optional embodiment, the bottom of the main shielding cover 302 is fixedly connected to a bottom shielding box 701 , and the bottom of the bottom shielding box 701 is fixedly connected to a magnetic ring 5 .

[0050] It should be noted that the power line 2 at the bottom of the three-phase meter body 1 will pass through the inner side of the magnetic ring 5 when extending along the bottom shielding box 701, and the bottom shielding box 701 on one side of the magnetic ring 5 improves the anti-electromagnetic interference performance of the magnetic ring 5.

[0051] In an optional embodiment: one side of the first liquid storage tank 6011 and one side of the second liquid storage tank 6013 are fixedly connected with a connecting pipe 703, one end of the connecting pipe 703 is fixedly connected with a ring plate 704, and bottom connecting holes 702 are opened on both sides of the bottom shielding box 701.

[0052] It should be noted that the annular sheet 704 is hollow, and the coolant continues to cool down after entering the inner side of the annular sheet 704. After the annular sheet 704 is used to fit and limit the surface of the power cord 2, the coolant in the annular sheet 704 is used to cool down the surface of the power cord 2.

[0053] In an optional embodiment, one side of the annular piece 704 is fixedly connected to a connecting rod 705 , one end of the connecting rod 705 is fixedly connected to an adjustment plate 706 , and one side of the adjustment plate 706 is fixedly connected to a bottom limit spring 707 .

[0054] It should be noted that after the bottom limit spring 707 loses the external force limit, it will push the connecting rod 705 to move along the inner side of the bottom connecting hole 702, and at the same time drive the annular piece 704 to contact the surface of the power cord 2. The two annular pieces 704 are used to fit the power cord 2 and limit the power cord 2, thereby reducing the situation where the power cord 2 is hit by external force and shakes in the bottom shielding box 701, causing the interface to become loose.

[0055] The specific working steps of the integrated structure of the three-phase electric energy meter's anti-disassembly housing and magnetic shield are as follows:

[0056] By arranging the supporting back plate 301 and the main shielding cover 302 on one side of the three-phase meter body 1, the supporting back plate 301 is used to support the main shielding cover 302, and the main shielding cover 302 is used to suppress external electromagnetic interference to ensure the metering stability under high-frequency harmonics. When the main shielding cover 302 protects the three-phase meter body 1, if it is necessary to observe the data on the surface of the three-phase meter body 1, the operator presses the main friction block 307 on the surface of the shielding plate 306, and uses multiple main friction blocks 307 to increase the friction between the skin and the surface of the shielding plate 306. After pressing the main friction block 307, the shielding plate 306 is pushed upward, and the shielding plate 306 is moved vertically upward along the inner side of the main clamping groove 304, and during the vertical movement, the two sides of the shielding plate 306 are used to slide along the inner side. The inner side sliding of the rail 305 improves the stability of the vertical movement of the shielding plate 306. By driving the magnetic plate 308 on the top of the shielding plate 306 to contact the surface of the top metal block 309, the shielding plate 306 is limited to the bottom of the top metal block 309 by utilizing the magnetic connection between the magnetic plate 308 and the top metal block 309. At this time, after the shielding plate 306 is raised, the glass plate 303 on the surface of the main shielding cover 302 is exposed. The glass plate 303 can be used to portable observe the data displayed on the surface of the three-phase electricity meter body 1. The movable shielding plate 306 does not require the entire support back plate 301 to be removed when the three-phase electricity meter body 1 needs to be observed. The shielding plate 306 is used to cover the glass plate 303 during daily storage, thereby improving the overall anti-electromagnetic interference performance of the support back plate 301.

[0057] When installing the support back plate 301 and the main shielding cover 302 on one side of the three-phase meter body 1, first place the three-phase meter body 1 on the inner side of the main shielding cover 302, and then move the support back plate 301 to one side surface of the main shielding cover 302. Auxiliary mounting holes 402 are provided on the surfaces of the main shielding cover 302 and the support back plate 301. Use external bolts to connect multiple auxiliary mounting holes 402 respectively, and fasten the main shielding cover 302 to the support back plate 301. After connection, place the support back plate 301 on the wall to be installed, and open a reserved hole on the wall that is consistent with the position of the main mounting hole 401. After aligning the main mounting hole 401 on the surface of the support back plate 301 with the reserved hole on the wall, use external bolts to connect the main mounting hole 401 with the reserved hole on the wall, and then fix the support back plate 301. The back support plate 301 is firmly installed on one side of the wall. After the installation is completed, the protective plate 404 is pushed in along one side of the connecting groove 403. The side friction block 405 on the surface of the protective plate 404 is used to increase the friction force and improve the stability of the movement of the protective plate 404. When the protective plate 404 slides along one side of the connecting groove 403, the special-shaped limiting column 4010 on the top of the protective plate 404 will contact one side of the connecting groove 403. One side of the special-shaped limiting column 4010 is an inclined surface. After the inclined surface of the special-shaped limiting column 4010 contacts the connecting groove 403, as the protective plate 404 continues to push, it will drive the special-shaped limiting column 4010 to move downward and enter the inner side of the inner connecting square groove 408. The special-shaped limiting column 4010 that has descended will drive the top limiting spring 409 The compression deformation is generated along the inner side of the inner connecting square groove 408. After the protective plate 404 continues to move to the end of the stroke on the inner side of the connecting groove 403, the special-shaped limit column 4010 will move to the bottom of the side limit square groove 406. At this time, after the special-shaped limit column 4010 and the top limit spring 409 lose their limit, the top limit spring 409 will reset and push the special-shaped limit column 4010 to move vertically upward. The special-shaped limit column 4010 will move to the inner side of the side limit square groove 406 to limit the protective plate 404. At this time, the protective plate 404 completes the connection with the connecting groove 403. If it is necessary to open the protective plate 404 to remove the bolts on the inner side of the main mounting hole 401, the operator needs to use an "L" shaped tool to insert the tool along the side connecting frame 407 into the back , the tool will enter the inner side of the side limiting square groove 406 along the side connecting frame 407. At this time, one end of the tool will contact the inner side of the adjusting hole 4011 and push it downward. By moving the tool downward along the side connecting frame 407 and driving the special-shaped limiting column 4010 to move downward, the opening of the adjusting hole 4011 is used to improve the stability of the tool in pushing the special-shaped limiting column 4010 to move. When the special-shaped limiting column 4010 moves, it will drive the top limiting spring 409 to produce compression deformation and enter the inner side of the inner connecting square groove 408. At this time, after the special-shaped limiting column 4010 moves out of the inner side of the side limiting square groove 406, the protective plate 404 loses its limit and can freely move out of the inner side of the connecting groove 403. After the support back plate 301 is fixed, the bolts are hiddenly protected by the protective plate 404.The connection tightness of the bolts is reduced by the contamination of external liquid particles. At the same time, by using a specific tool to open the connection groove 403 to remove and install the bolts inside the main installation hole 401, the external visible fixing point is avoided, preventing unauthorized disassembly and improving the safety of the three-phase electric energy meter.

[0058] When the main shielding cover 302 is used to protect the three-phase electric meter body 1, the liquid outlet pump 602 is started and the coolant in the top liquid storage tank 601 is driven along the top connecting pipe 603 to enter the heat dissipation box 604. After the liquid enters the heat dissipation box 604, it will flow along the side connecting pipe 607 to the inside of the heat exchange box 608. The liquid in the heat exchange box 608 will continue to cool the heat exchange plate 609. One side of the heat exchange plate 609 is fitted with the side groove 6016 on one side of the three-phase electric meter body 1. The heat exchange plate 609 with continuous cooling is used to cool the three-phase electric meter body 1, thereby improving the temperature stability of the three-phase electric meter body 1 when it is protected in the main shielding cover 302, reducing the situation where the temperature continues to rise, and at the same time, the heat dissipation box 604 The heat dissipation area is increased by the heat sink 605 on the surface, and the heat dissipation effect of the heat sink 604 is improved by the heat sink 605, maintaining the temperature stability of the liquid entering the heat sink 604. At the same time, the liquid will flow back into the heat sink 604 along the side connecting pipe 607 on the side of the heat exchange box 608, and flow into the first liquid storage tank 6011 along the bottom connecting pipe 6010. Through the connection of the circulation pipe 6012, the liquid will enter the second liquid storage tank 6013. When the circulation pump 6014 is started, the coolant in the second liquid storage tank 6013 is driven to flow along the return pipe 6015 back to the top liquid storage tank 601 to form a circulation, thereby improving the cooling effect of the coolant in the top liquid storage tank 601 on the three-phase electric meter body 1;

[0059] At the same time, the power line 2 at the bottom of the three-phase meter body 1 will pass through the inner side of the magnetic ring 5 when it extends along the bottom shielding box 701, and the bottom shielding box 701 on one side of the magnetic ring 5 is used to improve the anti-electromagnetic interference performance of the magnetic ring 5. At the same time, when the power line 2 passes through the inner side of the bottom shielding box 701, the operator first holds the two adjustment plates 706 and pushes them outward. After the adjustment plate 706 moves outward along one side of the bottom shielding box 701, it will drive the bottom limit spring 707 to deform and compress, and drive the connecting rod 705 to move along the inner side of the bottom connecting hole 702. The horizontal movement of the connecting rod 705 will drive the annular piece 704 along the bottom shielding box 701 The inner movement is achieved by opening the two annular pieces 704 along the inner side of the bottom shielding box 701, adjusting the position of the power cord 2 inside the bottom shielding box 701, and adjusting the position of the power cord 2 to a vertical state. At this time, the adjusting plate 706 is released. At this time, the bottom limit spring 707 loses the external force limit and pushes the connecting rod 705 to move along the inner side of the bottom connecting hole 702. At the same time, the annular piece 704 is driven to contact the surface of the power cord 2. The two annular pieces 704 are used to fit the power cord 2 and limit the power cord 2, thereby reducing the situation in which the power cord 2 is shaken by external force in the bottom shielding box 701 and causes the interface to become loose.

[0060] At the same time, when the liquid flows along the inner side of the first liquid storage tank 6011 and the second liquid storage tank 6013, it will flow along the connecting pipe 703 to the inner side of the annular plate 704. The annular plate 704 is hollow. The coolant continues to cool down after entering the inner side of the annular plate 704. After the annular plate 704 is used to fit and limit the surface of the power cord 2, the coolant in the annular plate 704 is used to cool down the surface of the power cord 2, thereby reducing the temperature rise of the power cord 2 caused by long-term operation, improving the stability of the long-term working temperature of the power cord 2 after being connected to the three-phase meter body 1, and extending the service life of the power cord 2.

[0061] It should be noted that the parts not described in detail in the present invention are all existing technologies, and the corresponding models can be selected according to actual needs. The internal structure and operating principles of the above parts are also common knowledge of those skilled in the art, and will not be elaborated on in detail.

[0062] While the 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 alterations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A three-phase electric energy meter with an anti-disassembly housing and a magnetic shielding integrated structure, comprising a three-phase electric energy meter body (1), characterized in that: One side of the three-phase electricity meter body (1) is fixedly connected to a power line (2); one side of the three-phase electricity meter body (1) is provided with a support back plate (301); one side of the support back plate (301) is provided with a main shielding cover (302); one side of the support back plate (301) is provided with a main mounting hole (401); one side of the main shielding cover (302) is provided with a secondary mounting hole (402); both sides of the support back plate (301) are provided with connection grooves (403); the inner side of the connection groove (403) is provided with a side A limiting square groove (406), a protective plate (404) is provided on the inner side of the connecting groove (403), an inner communicating square groove (408) is provided on the surface of the protective plate (404), a top limiting spring (409) is provided on the inner side of the inner communicating square groove (408), a special-shaped limiting column (4010) is fixedly connected to the top of the top limiting spring (409), one side of the special-shaped limiting column (4010) is an inclined surface, and the inclined surface of the special-shaped limiting column (4010) is directly facing one side of the supporting back plate (301); An adjustment hole (4011) is provided on the top of the special-shaped limiting column (4010), and a side connecting frame (407) is provided on one side of the side limiting square groove (406).

2. The three-phase electric energy meter anti-disassembly housing and magnetic shielding integrated structure according to claim 1, characterized in that: A side friction block (405) is fixedly connected to one side of the protective plate (404), and the number of the side friction blocks (405) is multiple.

3. The three-phase electric energy meter anti-disassembly housing and magnetic shielding integrated structure according to claim 2, characterized in that: A glass plate (303) is fixedly connected to the inner side of the main shielding cover (302), a main clamping groove (304) is fixedly connected to one side of the main shielding cover (302), an inner sliding rail (305) is provided on the inner side of the main clamping groove (304), a shielding plate (306) is slidably connected to the inner side of the inner sliding rail (305), and a main friction block (307) is fixedly connected to the surface of the shielding plate (306).

4. The three-phase electric energy meter anti-disassembly housing and magnetic shielding integrated structure according to claim 3, characterized in that: A magnetic plate (308) is fixedly connected to the top of the shielding plate (306), and a top metal block (309) is fixedly connected to one side of the main shielding cover (302).

5. The three-phase electric energy meter anti-disassembly housing and magnetic shielding integrated structure according to claim 4, characterized in that: One side of the supporting back plate (301) is fixedly connected to a top liquid storage tank (601), one side of the top liquid storage tank (601) is fixedly connected to a liquid outlet pump (602), one side of the liquid outlet pump (602) is fixedly connected to a top connecting pipe (603), one end of the top connecting pipe (603) is fixedly connected to a heat dissipation box (604), one side of the heat dissipation box (604) is fixedly connected to a side connecting pipe (607), one end of the side connecting pipe (607) is fixedly connected to a heat exchange box (608), one side of the heat exchange box (608) is fixedly connected to a heat exchange plate (609), one side of the main shielding cover (302) is provided with an external communication frame (606), and one side of the three-phase electric meter body (1) is provided with a side groove (6016).

6. The three-phase electric energy meter anti-disassembly housing and magnetic shielding integrated structure according to claim 5, characterized in that: One side of the heat dissipation box (604) is fixedly connected to a heat sink (605), one side of the heat dissipation box (604) is fixedly connected to a bottom connecting pipe (6010), one end of the bottom connecting pipe (6010) is fixedly connected to a first liquid storage tank (6011), one side of the first liquid storage tank (6011) is fixedly connected to a circulation pipe (6012), one side of the circulation pipe (6012) is fixedly connected to a second liquid storage tank (6013), one side of the second liquid storage tank (6013) is fixedly connected to a circulation pump (6014), and one side of the circulation pump (6014) is fixedly connected to a liquid return pipe (6015).

7. The three-phase electric energy meter anti-disassembly housing and magnetic shielding integrated structure according to claim 6, characterized in that: The bottom of the main shielding cover (302) is fixedly connected to a bottom shielding box (701), and the bottom of the bottom shielding box (701) is fixedly connected to a magnetic ring (5).

8. The three-phase electric energy meter anti-disassembly housing and magnetic shielding integrated structure according to claim 7, characterized in that: A connecting pipe (703) is fixedly connected to one side of the first liquid storage tank (6011) and one side of the second liquid storage tank (6013), an annular plate (704) is fixedly connected to one end of the connecting pipe (703), and bottom connecting holes (702) are provided on both sides of the bottom shielding box (701).

9. The three-phase electric energy meter anti-disassembly housing and magnetic shielding integrated structure according to claim 8, characterized in that: One side of the annular piece (704) is fixedly connected to a connecting rod (705), one end of the connecting rod (705) is fixedly connected to an adjustment plate (706), and one side of the adjustment plate (706) is fixedly connected to a bottom limit spring (707).

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