A high-current relay integrated electric energy meter for bidirectional flow measurement

Abstract

The present invention relates to a high-current relay integrated electric energy meter for tidal bidirectional metering, and relates to the technical field of electric energy meters; the electric energy meter comprises a first circuit board and a second circuit board, a high-power relay is welded on the second circuit board, an electromagnetic isolation layer for isolating electromagnetic and heat is provided between the second circuit board and the first circuit board, and a heat dissipation device is provided on the high-power relay; the electric energy meter can actively adjust the relay power, and the heat dissipation device can actively perform heat dissipation treatment on the relay, and the adjustment of the relay power size can be linked to the heat dissipation performance of the heat dissipation device. The greater the relay power, the stronger the heat dissipation performance of the heat dissipation device, and conversely, the smaller the power, the average heat dissipation performance. Through reasonable performance matching, the heat dissipation performance of the electric energy meter in hot weather and the thermal insulation performance of the electric energy meter in cold weather are guaranteed, thereby avoiding the large temperature difference inside the electric energy meter that accelerates the decay of internal electronic components, and indirectly improving the service life of the electronic components inside the electric energy meter.

Description

Technical Field

[0001] The present invention relates to the technical field of electric energy meters, and in particular to a high-current relay integrated electric energy meter for tidal bidirectional measurement. Background Art

[0002] The high-current relay integrated energy meter with tidal bidirectional metering is an intelligent energy meter that combines tidal bidirectional metering functions with high-current relay technology. It can simultaneously measure forward active energy, reverse active energy, forward reactive energy and reverse reactive energy. It is widely used in distributed photovoltaic systems, energy storage systems, microgrids and new energy power generation.

[0003] For example, a Chinese patent with publication number CN118937756A discloses an electric energy meter, which relates to the field of low-voltage electrical appliance technology. The electric energy meter includes a bottom shell, a cover, and an anti-disassembly buckle. The bottom shell is provided with at least one clamping column, and the end of the clamping column is provided with at least one claw; the cover is detachably connected to the bottom shell, and at least one clamping hole is provided on the cover; the anti-disassembly buckle is filled into the clamping hole, and a locking structure is provided on the side of the anti-disassembly buckle facing the bottom shell. A clamping edge is provided on the side of the clamping hole close to the bottom shell, and the claw can be clamped to the clamping edge. After the anti-disassembly buckle is installed in the clamping hole, the locking structure limits the claw and maintains the claw and the clamping edge in a clamped state. It can increase the difficulty of disassembly, increase the safety of the electric energy meter, and replace existing fasteners such as screws, thereby improving the assembly efficiency of the cover.

[0004] However, the above-mentioned electric energy meter still has some shortcomings in actual use:

[0005] 1. First, in the existing technology, high-power relays in electric energy meters are prone to high temperatures due to frequent switching of high currents. However, existing ordinary heat sinks are difficult to quickly dissipate local high temperatures. In addition, the interior of the electric energy meter is compact and a large heat sink cannot be installed. This results in temperature loss after the equipment is used for a long time.

[0006] 2. Secondly, in the prior art, a high-power relay is provided inside the electric energy meter, which is prone to generate electromagnetic interference. In addition, the existing high-power relay has a constant power, resulting in poor applicability of the electric energy meter.

[0007] Therefore, based on the above-stated viewpoint, there is still room for improvement in existing electricity meters. Summary of the Invention

[0008] In order to solve the above problems, the present invention provides a large current relay integrated electric energy meter for bidirectional flow measurement, which adopts the following technical solutions:

[0009] A high-current relay integrated electric energy meter for tidal bidirectional metering includes an outer shell and an inner shell assembled with each other, a metering cavity is formed between the outer shell and the inner shell, a No. 1 circuit board is also provided in the metering cavity formed by the outer shell and the inner shell, a No. 2 circuit board is provided on one side of the No. 1 circuit board, a high-power relay is welded on the No. 2 circuit board, a metering module is provided on the No. 1 circuit board, and the high-power relay and the metering module are vertically integrated.

[0010] An electromagnetic isolation layer is provided between the No. 2 circuit board and the No. 1 circuit board to isolate electromagnetic fields and heat. The electromagnetic isolation layer has a corrugated structure, and a heat dissipation device is provided on the high-power relay.

[0011] The heat dissipation device includes heat-conducting copper tubes laid at equal intervals along the length direction of the No. 2 circuit board. Heat-conducting fins are provided on one side of the heat-conducting copper tubes. The heat-conducting fins are attached to the side walls of the shell, and heat-dissipating ports are opened on the side walls of the shell for the heat-dissipating fins to dissipate heat.

[0012] Preferably, the high-power relay is composed of a number of small relays of the same model, and the small relays are mounted on the second circuit board at equal intervals through their own pins.

[0013] Preferably, two conductive rods are symmetrically provided in the width direction of the No. 2 circuit board, and sliding conductive plates are respectively installed on the two conductive rods along the vertical direction through wires. Auxiliary brackets that assist their movement and are insulated are installed on the conductive plates. The auxiliary brackets are slidably provided on the No. 2 circuit board, and a centering rod is installed between the two auxiliary brackets on the same vertical line. The side where the two centering rods are close to each other is a serrated structure, and a centering gear is meshed between the two centering rods, and the centering gear is rotatably provided on the No. 2 circuit board.

[0014] A reset insulating spring is provided between the center rod and the second circuit board.

[0015] Preferably, an adjusting screw and a limiting rod parallel to each other are rotatably connected on the inner wall of the shell, and an adjusting block is provided on the adjusting screw and the limiting rod. One side of the adjusting block is a sloped structure, and a linkage rod is installed on the center rod on one side. The linkage rod and the adjusting block are on the same plane.

[0016] Preferably, two fixing frames are symmetrically provided in the length direction of the No. 2 circuit board, and a T-shaped slide groove is provided on the fixing frame. A T-shaped block is slidably provided in the T-shaped slide groove of the fixing frame, and the thermal copper tube is horizontally arranged on the T-shaped block on the same horizontal straight line on the two fixing frames. The spacing between several thermal copper tubes can be changed by adjusting the spacing between the fixing frames.

[0017] Preferably, a circular copper frame is installed on the back side of the heat dissipation fin, and one end of the heat-conducting copper tube close to the heat dissipation fin is slidably arranged inside the circular copper frame. Several heat dissipation fans are installed at equal intervals inside the circular copper frame.

[0018] Preferably, a plurality of trapezoidal adjustment plates are slidably mounted on one side of the fixing frame, the side of the trapezoidal adjustment plate close to the T-shaped block is arranged in an inclined plane, and the inclined plane on one side of the trapezoidal adjustment plate contacts the corner of the T-shaped block.

[0019] Preferably, a guide column is installed in the T-shaped slide groove of the fixing frame, the T-shaped block is slidably arranged on the guide column, and a telescopic spring is provided between the two T-shaped blocks located on the outer side of the guide column and the inner wall of the fixing frame, and the telescopic spring is sleeved on the guide column.

[0020] Preferably, a linkage screw is further provided on the fixing frame, the trapezoidal adjustment plate is screwed to the linkage screw on the fixing frame, linkage gears are installed on the linkage screw and the adjustment screw, and a linkage toothed belt is sleeved on the linkage gear.

[0021] Preferably, an extension rod is also installed on the trapezoidal adjustment plate, and an extension block is installed on the end of the extension rod away from the trapezoidal adjustment plate. A switch is installed on the heat dissipation fan, and the switches are arranged at equal intervals along a straight line on the circular copper frame. A resistance block is slidingly provided on the switch, and a resistance tension spring is connected between the resistance block and the outer wall of the circular copper frame. The extension block and the resistance block are on the same straight line. When the extension block moves, the resistance block is squeezed so that the resistance block controls the opening and closing of the switch.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The electric energy meter of the present invention assembles a relay and a bidirectional metering module together in an integrated manner and is installed in the electric energy meter. The relay and the metering module are vertically integrated, which significantly improves space utilization, reduces electromagnetic interference of the relay, and optimizes the heat conduction path between modules, thereby improving the accuracy and effectiveness of the electric energy data read by the electric energy meter.

[0024] 2. The relay of the present invention can actively adjust its power so that it can be used in multiple different application scenarios. By adjusting the power of the relay, the applicability of the electric energy meter is improved. The electric energy meter adjusts the power of the relay so that it can correspond to each different electricity usage scenario one by one, greatly improving the accuracy of its reading of electric energy data while avoiding performance excess.

[0025] Third, the heat dissipation device of the present invention can actively dissipate heat from the relay, maintaining the internal temperature of the energy meter within a reasonable range, thereby preventing excessive internal temperature from causing the entire energy meter to freeze or lose performance. Furthermore, the heat dissipation device of the present application can synchronously adjust its heat dissipation performance according to the power of the relay, so that its heat dissipation performance can better match that of the energy meter.

[0026] Fourth, the adjustment of the power of the relay of the present invention is linked to the heat dissipation performance of the heat dissipation device. The greater the power of the relay, the stronger the heat dissipation performance of the heat dissipation device. Conversely, the smaller the power, the average heat dissipation performance. Through reasonable performance matching, the heat dissipation performance of the electricity meter in hot weather and the thermal insulation performance of the electricity meter in cold weather are guaranteed, avoiding the frequent occurrence of large temperature differences inside the electricity meter, and indirectly improving the service life of the electronic components inside the electricity meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings and examples.

[0028] Figure 1 It is a schematic diagram of the main structure of the electric energy meter of the present invention.

[0029] Figure 2 It is a schematic diagram of the structure between the outer shell and the inner shell of the electric energy meter of the present invention.

[0030] Figure 3 It is a structural schematic diagram of the metering module, electromagnetic isolation layer and heat dissipation device in the first circuit board and the second circuit board of the present invention.

[0031] Figure 4 It is a structural schematic diagram of the high-power relay of the present invention.

[0032] Figure 5 It is a schematic structural diagram of the heat dissipation device of the present invention from a first perspective.

[0033] Figure 6 This is a schematic diagram of the first-view structure of controlling the contact between the conductive sheet and the pin of the present invention.

[0034] Figure 7 This is a schematic diagram of the structure of controlling the contact between the conductive sheet and the pin from a second perspective of the present invention.

[0035] Figure 8 2 is a schematic structural diagram of the heat dissipation device of the present invention from a second viewing angle.

[0036] Figure 9 It is a schematic structural diagram of the heat dissipation device of the present invention from a third perspective.

[0037] Figure 10 It is a schematic diagram of the structure among the fixing frame, T-shaped slide groove, T-shaped block, guide column and telescopic spring of the present invention.

[0038] Figure 11 This is a first-perspective structural diagram of the heat-conducting copper pipe and the heat dissipation fan between the two fixing frames of the present invention.

[0039] Figure 12 This is a second perspective structural diagram of the heat-conducting copper pipe and the heat dissipation fan between the two fixing frames of the present invention.

[0040] Figure 13 It is a schematic structural diagram of the extension rod, extension block, switch, interference block and interference tension spring of the present invention.

[0041] Explanation of reference numerals: 1. Electric energy meter; 10. Outer shell; 11. Inner shell; 12. Measuring cavity; 2. Circuit board No. 1; 3. Circuit board No. 2; 4. High-power relay; 5. Measuring module; 6. Electromagnetic isolation layer; 7. Heat dissipation device; 40. Small relay; 41. Pin; 20. Conductive rod; 21. Conductive sheet; 22. Auxiliary bracket; 23. Centering rod; 24. Centering gear; 25. Reset insulation spring; 30. Adjusting screw; 31. Limit Position rod; 32. Adjustment block; 33. Linkage rod; 70. Thermal copper tube; 71. Heat sink fin; 72. Fixing bracket; 73. T-shaped slide; 74. T-shaped block; 75. Circular copper frame; 76. Heat dissipation fan; 77. Trapezoidal adjustment plate; 79. Guide column; 80. Telescopic spring; 81. Linkage screw; 84. Linkage gear; 85. Linkage toothed belt; 90. Extension rod; 91. Extension block; 92. Switch; 93. Contact block; 94. Contact tension spring. DETAILED DESCRIPTION

[0042] The following combination Figures 1-13 This application is described in further detail.

[0043] The present application discloses a high-current relay integrated energy meter for bidirectional flow measurement, which is widely used in distributed photovoltaic systems, energy storage systems, microgrids, and new energy power generation. However, the existing energy meter 1 has some shortcomings in actual use:

[0044] First, in the prior art, the high-power relay 4 in the energy meter 1 is prone to high temperatures due to the frequent switching of high currents. Conventional heat sinks are difficult to quickly dissipate the localized high temperatures. Furthermore, the compact interior of the energy meter 1 precludes the installation of a large heat sink, resulting in temperature runaway after prolonged use. Second, in the prior art, the high-power relay 4 installed within the energy meter 1 is prone to electromagnetic interference. Furthermore, the conventional high-power relay 4 has a constant power output, resulting in poor applicability of the energy meter 1.

[0045] Therefore, the present application proposes a high-current relay integrated electric energy meter for bidirectional flow measurement.

[0046] Example 1:

[0047] Reference Figure 1Figure 1 shows the main structure of the energy meter 1 used in this application; it is a high-current relay-integrated energy meter for bidirectional flow measurement. Bidirectional flow measurement means that the energy meter 1 can simultaneously measure both forward and reverse energy flows. For example, when a distributed photovoltaic system is generating electricity, the energy meter 1 can record the energy generated by the photovoltaic power generation (forward energy) and also record the excess energy delivered to the grid (reverse energy). This functionality is crucial for the rational management and utilization of renewable energy power generation systems, balancing grid supply and demand and improving energy efficiency.

[0048] This high-current relay-integrated energy meter for bidirectional flow metering not only measures active and reactive energy but also records parameters such as voltage, current, and power factor. It utilizes advanced digital sampling and processing technology and SMT processes to ensure high data accuracy and long-term device stability. It supports RS485 or infrared communication for easy data transmission and remote monitoring. It is suitable for power systems, industrial and mining enterprises, distributed photovoltaic systems, and energy storage systems, and is particularly valuable in renewable energy generation and smart grids.

[0049] Reference Figure 2 As shown, it includes an outer shell 10 and an inner shell 11 assembled with each other, and a metering cavity 12 is formed between the outer shell 10 and the inner shell 11. The metering cavity 12 formed by the outer shell 10 and the inner shell 11 is also provided with a No. 1 circuit board 2 installed by bolts and nuts. A No. 2 circuit board 3 for loading relays is provided on one side of the No. 1 circuit board 2. A high-power relay 4 is welded on the No. 2 circuit board 3. A metering module 5 is provided on the No. 1 circuit board 2. The high-power relay 4 and the metering module 5 are vertically integrated.

[0050] The outer shell 10 and the inner shell 11 are assembled with each other to form a shell of the electric energy meter 1 , which protects the electronic components inside the electric energy meter 1 .

[0051] It should be noted that the first circuit board 2 is provided with a conventionally known metering module 5 , a central processing unit, a display unit, a communication unit and an output unit.

[0052] Metering module 5: This is the core component of the electronic energy meter 1, used to measure energy consumption. Its operating principles include voltage and current sampling, signal conversion, and power calculation. Specific implementations include analog multipliers and digital multipliers. Analog multipliers typically include modules such as a triangle wave generator, comparator, modulator, and filter; digital multipliers, on the other hand, perform data processing using a DSP or microprocessor. The metering module 5 in this application is a bidirectional metering module.

[0053] Central Processing Unit (MCU): The MCU is the control core of the electronic energy meter. It receives data from the energy measurement unit, performs calculations and logical judgments, and controls the operations of other modules. For example, it processes voltage and current signals, calculates energy consumption, and outputs pulse signals.

[0054] Display unit: The display unit is used to display the reading of the energy meter 1. Common display methods include LED digital tubes and LCD liquid crystal displays. LCD displays are widely used because of their low power consumption and support for Chinese character display.

[0055] Output unit: The output unit is responsible for outputting the measurement results of the energy meter 1 in the form of pulse signals or digital signals for communication with external devices (such as data acquisition systems). Common communication interfaces include RS-485 and infrared communication.

[0056] Communication unit: The communication unit is used to realize remote data transmission and control functions, such as data exchange with external devices through the RS-485 interface, or remote meter reading through the carrier communication module.

[0057] See Figure 2 and Figure 3 As shown, it is a structural schematic diagram of the electromagnetic isolation layer 6; an electromagnetic isolation layer 6 for isolating electromagnetic and heat is provided between the No. 2 circuit board 3 and the No. 1 circuit board 2, and the electromagnetic isolation layer 6 is a corrugated structure, and a heat dissipation device 7 is provided on the high-power relay 4.

[0058] The above-mentioned devices generate a certain amount of heat when in use, which involves a very important electronic component, namely the relay, especially the high-power relay 4. After operation, the high-power relay 4 is prone to high temperature due to frequent switching of high currents in the electric energy meter 1, especially during peak power transmission, so it is necessary to quickly dissipate heat for it.

[0059] Reference Figure 4 As shown, it is a structural diagram of the high-power relay 4 in this application; the high-power relay 4 is composed of several small relays 40 of the same model, and the several small relays 40 are installed on the second circuit board 3 at equal intervals through their own pins 41.

[0060] It should be noted that the high-power relay 4 in the present application is composed of a plurality of small relays 40 , and the plurality of small relays 40 are arranged at equal intervals on the second circuit board 3 .

[0061] In specific implementation, when the electric energy meter 1 of the present application needs to be applied to different fields, such as microgrids, relays with too large power are not needed at this time. When the electric energy meter 1 of the present application is applied to new energy systems, very large power relays are required. At this time, the existing technology needs to produce electric energy meters 1 of corresponding power and install them in different fields. This will greatly increase the difficulty of producing the electric energy meter 1 and reduce its production efficiency. Therefore, the present application proposes a special electric energy meter 1 that can actively adjust the power of its internal relays so that it can be applied to different fields and increase the applicability of the electric energy meter 1.

[0062] Reference Figure 5 、 Figure 6 and Figure 7 As shown, it is a structural schematic diagram of the adjustment of the high-power relay 4 in this application; two conductive rods 20 are symmetrically provided in the width direction of the No. 2 circuit board 3, and sliding conductive plates 21 are respectively installed on the two conductive rods 20 along the vertical direction through wires. Auxiliary brackets 22 that assist their movement and insulation are installed on the conductive plates 21. The auxiliary brackets 22 are slidably arranged on the No. 2 circuit board 3, and a centering rod 23 is installed between the two auxiliary brackets 22 on the same vertical straight line. The side where the two centering rods 23 are close to each other is a serrated structure, and a centering gear 24 is meshed between the two centering rods 23, and the centering gear 24 is rotatably arranged on the No. 2 circuit board 3.

[0063] A reset insulating spring 25 is provided between the center rod 23 and the second circuit board 3 .

[0064] One end of the conductive rod 20 is provided with a plurality of conductive plates 21 installed at equal intervals, and the other side of the conductive rod 20 is connected to the entire metering module 5 through a wire, so that the metering module 5 can read various parameter indicators of the relay connected to the conductive rod 20.

[0065] In the initial state, four groups of relays are provided inside the housing 10 of the energy meter 1. In the initial state, one group of relays is connected to the entire circuit of the conductive rod 20, while the other three groups of relays are in an open circuit state and are not connected to the circuit of the conductive rod 20.

[0066] According to the scenario in which the electric energy meter 1 is used, when the power of the relay needs to be adjusted, the adjusting screw 30 can be controlled, as shown below:

[0067] Look again Figure 7 As shown, an adjusting screw 30 and a limiting rod 31 are rotatably connected to the inner wall of the housing 10, and an adjusting block 32 is provided on the adjusting screw 30 and the limiting rod 31. One side of the adjusting block 32 is a sloped structure, and a linkage rod 33 is installed on the center rod 23 on one side. The linkage rod 33 and the adjusting block 32 are on the same plane.

[0068] In the initial state, the handle position of the adjusting screw 30 is engraved with a scale, and the upper end thereof is engraved with a mark of the corresponding power.

[0069] Secondly, three groups of adjustment blocks 32 are provided on the adjustment screw 30 . The three groups of adjustment blocks 32 gradually become longer along the length direction of the adjustment screw 30 , and the distances between the three groups of adjustment blocks 32 and the corresponding three linkage rods 33 gradually become smaller.

[0070] During specific implementation, the adjusting screw 30 is rotated clockwise, and the adjusting screw 30 drives the three adjusting blocks 32 set on its upper end to synchronously approach the corresponding linkage rod 33. At this time, the first adjusting block 32 first contacts the corresponding first linkage rod 33, so the first linkage rod 33 is squeezed by the first adjusting block 32, causing it to control the center rod 23 connected to it to move downward. At this time, the center rod 23 moving downward drives the other center rod 23 to move upward synchronously under the linkage of the center gear 24. One of the two center rods 23 moves upward and the other moves downward. Both of them simultaneously control the two correspondingly connected conductive plates 21 to move synchronously toward the pin 41 of the relay until the two conductive plates 21 hit the pin 41 of the relay. At this time, the corresponding small relay 40 is connected in series with the circuit of the entire conductive rod 20.

[0071] Continuing to rotate the adjusting screw 30 similarly drives the second adjusting block 32 to compress the second linkage rod 33. The above operation is then repeated, connecting the second relay on the second circuit board 3 in series with the circuit of the conductive rod 20. This is followed by a similar process, connecting multiple small relays 40 in series with the circuit of the conductive rod 20. At this point, a high-power relay 4 with a high current is formed in the entire circuit.

[0072] Once the high-power relay 4 is properly adjusted, the entire energy meter 1 can be connected to the entire circuit. As the energy meter 1 is used, the high-power relay 4 generates a large amount of heat. If this heat cannot be dissipated in time, the temperature inside the energy meter 1 will become too high. At this time, the electronic components soldered on the No. 1 circuit board 2 and No. 2 circuit board 3 inside the energy meter 1 will self-protect due to the high temperature, causing the performance of the entire device to degrade. In addition, the alternating use and shutdown of the energy meter 1 will cause a large temperature difference inside the meter. Therefore, the colloid inside the meter will be exposed to a large temperature difference for a long time, which will shorten the life of the internal colloid and cause cracking of the follower.

[0073] Therefore, the present application proposes a heat dissipation device 7 to dissipate the heat.

[0074] See Figure 8 and Figure 9As shown, the heat dissipation device 7 includes a heat-conducting copper tube 70 laid at equal intervals along the length direction on the second circuit board 3, and a heat dissipation fin 71 is provided on one side of the heat-conducting copper tube 70. The heat dissipation fin 71 is attached to the side wall of the shell 10, and a heat dissipation port is opened on the side wall of the shell 10 for the heat dissipation fin 71 to dissipate heat.

[0075] Specifically, the heat-conducting copper tubes 70 are arranged at equal intervals on the surface of the second circuit board 3, and several small relays 40 are also against the heat-conducting copper tubes 70. When the small relays 40 are working, a large amount of heat is generated. At this time, the heat-conducting copper tubes 70 conduct the heat, so that the heat is guided along the heat-conducting copper tubes 70 to the heat dissipation fins 71, and then the heat dissipation fins 71 are used for heat dissipation.

[0076] However, it should be noted that the power of the small relay 40 of the present application is adjusted according to the installation environment; when there is only one or two small relays 40 connected to the internal circuit of the electricity meter 1, the heat dissipation performance of the thermal copper tube 70 also needs to be adaptively adjusted in the same way, and there is no need for very strong heat dissipation performance, because strong heat dissipation performance will also cause the entire electricity meter 1 to be used in winter. When the internal heat dissipates too quickly, the temperature will be too low, which will also affect the normal use of the electricity meter 1. Therefore, the thermal copper tube 70 of the present application can adjust the spacing.

[0077] Reference Figure 10 and Figure 11 As shown, two fixing frames 72 are symmetrically provided in the length direction of the second circuit board 3, and a T-shaped slide groove 73 is opened on the fixing frame 72. A T-shaped block 74 is slidably provided in the T-shaped slide groove 73 of the fixing frame 72. The thermal copper tube 70 is horizontally arranged on the T-shaped block 74 on the same horizontal straight line on the two fixing frames 72. The spacing between the plurality of thermal copper tubes 70 can be changed by adjusting the spacing between the fixing frames 72.

[0078] It should be noted that the heat-conducting copper tube 70 is set on two T-shaped blocks 74, and the T-shaped blocks 74 are slidably set in the T-shaped sliding grooves 73 of the fixing frame 72 to ensure that the T-shaped blocks 74 can slide.

[0079] When only one or two small relays 40 are provided in the high-power relay 4 and connected to the circuit with the conductive rod 20, the spacing between the heat-conducting copper tubes 70 is relatively large. At this time, the position of the heat-conducting copper tubes 70 can ensure that the heat generated by a small number of small relays 40 during operation can be discharged in time, thereby ensuring the temperature stability of the small relays 40.

[0080] When multiple or all of the small relays 40 in the high-power relay 4 are connected to the circuit of the conductive rod 20, the spacing between the thermally conductive copper tubes 70 is small, the thermally conductive copper tubes 70 are precisely arranged, and the bottom of the thermally conductive copper tubes 70 is in contact with all the small relays 40, ensuring that heat can be promptly drawn by the thermally conductive copper tubes 70 and discharged through the heat dissipation fins 71.

[0081] Replay Figure 8 and Figure 9 As shown, it is a schematic diagram of the structure of the heat sink fin 71; the heat sink fin 71 is plugged into the side wall of the shell 10, and a circular copper frame 75 is installed on the back side of the heat sink fin 71. The end of the heat-conducting copper tube 70 close to the heat sink fin 71 is slidably arranged on the inner side of the circular copper frame 75, and a number of heat dissipation fans 76 are installed at equal intervals inside the circular copper frame 75.

[0082] In specific implementation, when the heat-conducting copper tube 70 draws the heat generated by the small relay 40, the heat dissipation fan 76 will also start. The heat dissipation fan 76 will quickly extract the heat from the heat-conducting copper tube 70 and discharge it through the mesh on the heat dissipation fins 71. At the same time, the heat dissipation fins 71 will also absorb heat and discharge the heat through its own fins, thereby ensuring the heat dissipation efficiency in two ways.

[0083] Furthermore, when the heat-conducting copper tube 70 can adjust the heat dissipation performance by adjusting the spacing, the heat dissipation fan 76 can also adjust the air volume along with the heat-conducting copper tube 70. The details are as follows:

[0084] See Figure 11 、 Figure 12 and Figure 13 As shown, an extension rod 90 is also installed on the trapezoidal adjustment plate 77, and an extension block 91 is installed on the end of the extension rod 90 away from the trapezoidal adjustment plate 77. A switch 92 is installed on the heat dissipation fan 76. The switches 92 are arranged at equal intervals along a straight line on the inner wall of the shell 10. A resistance block 93 is slidingly provided on the switch 92, and a resistance tension spring 94 is connected between the resistance block 93 and the inner wall of the shell 10. The extension block 91 and the resistance block 93 are on the same straight line. When the extension block 91 moves, the resistance block 93 is squeezed so that the resistance block 93 controls the opening and closing of the switch 92.

[0085] In the initial state, three sets of heat dissipation fans 76 are set in the circular copper frame 75, and the three sets of heat dissipation fans 76 are connected to the switch 92 through wires; it should be noted that after the switch 92 is pressed, the heat dissipation fans 76 are powered on, and if the switch 92 is not pressed, the heat dissipation fans 76 are powered off.

[0086] During specific implementation, in the initial state, the extension block 91 is away from the three groups of interference blocks 93. When the power of the small relay 40 is relatively small, the trapezoidal adjustment plate 77 approaches the heat-conducting copper tube 70, and the trapezoidal adjustment plate 77 squeezes the heat-conducting copper tube 70, so that the distance between the heat-conducting copper tubes 70 becomes larger. At this time, the trapezoidal adjustment plate 77 drives the extension block 91 away from the interference block 93 through the extension rod 90, so that the extension block 91 only squeezes one or two interference blocks 93 of the three groups of interference blocks 93. After the interference block 93 is squeezed, the interference block 93 presses the switch 92, so that the corresponding heat dissipation fan 76 is energized. At this time, the heat dissipation performance of the heat dissipation fan 76 corresponds to the heat dissipation performance of the heat-conducting copper tube 70.

[0087] When all the small relays 40 are connected in series in the circuit of the electric energy meter 1, the trapezoidal adjustment plate 77 is away from the heat-conducting copper tube 70. At this time, the distance between the heat-conducting copper tubes 70 is small, and the heat-conducting copper tubes 70 are closely arranged. At this time, the extension block 91 on the extension rod 90 will squeeze all three groups of resistance blocks 93 in the circular copper frame 75. The three groups of resistance blocks 93 will also press the three switches 92, so that all three groups of heat dissipation fans 76 are energized. At this time, the heat dissipation performance of the heat dissipation fan 76 corresponds to the heat dissipation performance of the heat-conducting copper tube 70, and is its maximum heat dissipation performance.

[0088] Look again Figure 10 、 Figure 11 and Figure 12 As shown, a plurality of trapezoidal adjustment plates 77 are slidably mounted on one side of the fixing frame 72 . The side of the trapezoidal adjustment plate 77 close to the T-shaped block 74 is provided with an inclined surface, and the inclined surface on one side of the trapezoidal adjustment plate 77 contacts the corner of the T-shaped block 74 .

[0089] When the trapezoidal adjustment plate 77 approaches the heat-conducting copper tubes 70 and squeezes them, the distance between the heat-conducting copper tubes 70 becomes larger, and the heat dissipation performance thereof gradually decreases.

[0090] When the trapezoidal adjustment plate 77 moves away from the heat-conducting copper tubes 70 and squeezes them, the distance between the heat-conducting copper tubes 70 becomes smaller, and the heat dissipation performance thereof gradually increases.

[0091] Replay Figure 10 As shown, a guide column 79 is installed in the T-shaped slide groove 73 of the fixed frame 72, and the T-shaped block 74 is slidably arranged on the guide column 79, and a telescopic spring 80 is provided between the two T-shaped blocks 74 located on the outer side of the guide column 79 and the inner wall of the fixed frame 72, and the telescopic spring 80 is sleeved on the guide column 79.

[0092] The telescopic spring 80 exerts an initial squeezing force on the T-shaped block 74 . When the trapezoidal adjustment plate 77 is separated from the thermal copper tube 70 , the telescopic spring 80 squeezes the thermal copper tube 70 through the T-shaped block 74 , minimizing the distance between them and allowing the thermal copper tubes 70 to be tightly arranged.

[0093] Reference Figure 6 As shown, specifically, a linkage screw 81 is further provided on the fixing frame 72, and the trapezoidal adjustment plate 77 is screwed to the linkage screw 81 on the fixing frame 72. A linkage gear 84 is installed on the linkage screw 81 and the adjustment screw 30, and a linkage toothed belt 85 is provided on the linkage gear 84.

[0094] In specific implementation, the present application can control the power adjustment of the relay in the electric energy meter 1 by rotating the adjustment screw 30, but in order to ensure the synchronous adjustment of the heat dissipation performance of the heat-conducting copper tube 70 and the heat dissipation fan 76, the present application proposes a linkage screw 81.

[0095] In specific implementation, when the adjusting screw 30 is rotated, the linkage gear 84 on the adjusting screw 30 controls the linkage screw 81 to rotate synchronously through the linkage toothed belt 85. When the linkage screw 81 rotates, the movement of the trapezoidal adjustment plate 77 can be controlled through the threaded structure, so that the trapezoidal adjustment plate 77 is close to or away from the heat-conducting copper tube 70.

[0096] When the trapezoidal adjustment plate 77 is close to the heat-conducting copper tubes 70, the distance between the heat-conducting copper tubes 70 becomes larger; otherwise, the distance between the heat-conducting copper tubes 70 becomes smaller.

[0097] During operation: The first step is to rotate the adjusting screw 30 clockwise when the power of the relay in the electric energy meter 1 needs to be adjusted. The three adjusting blocks 32 provided on the upper end of the adjusting screw 30 will approach the corresponding linkage rod 33 synchronously. At this time, the first adjusting block 32 will first contact the corresponding first linkage rod 33. Therefore, the first linkage rod 33 will be squeezed by the first adjusting block 32, so that it controls the center rod 23 connected thereto to move downward. At this time, the center rod 23 that moves downward drives the other center rod 23 to move upward synchronously under the linkage of the center gear 24. One of the two center rods 23 moves upward and the other moves downward. At the same time, the two correspondingly connected conductive plates 21 will move synchronously toward the pin 41 of the relay until the two conductive plates 21 contact the pin 41 of the relay. At this time, the corresponding relay is connected in series with the circuit of the entire conductive rod 20.

[0098] Continuing to rotate the adjusting screw 30 similarly drives the second adjusting block 32 to compress the second linkage rod 33. The above operation is then repeated, connecting the second relay on the second circuit board 3 in series with the circuit of the conductive rod 20. This is followed by a similar process, connecting multiple small relays 40 in series with the circuit of the conductive rod 20. At this point, a high-power relay 4 with a high current is formed in the entire circuit.

[0099] Step 2: After the high-power relay 4 is adjusted, the entire electric energy meter 1 can be connected to the entire circuit. As the electric energy meter 1 is used, the high-power relay 4 will generate a large amount of heat. At this time, the heat-conducting copper tube 70 will conduct the heat, so that the heat is guided along the heat-conducting copper tube 70 to the heat dissipation fins 71, and then the heat dissipation fins 71 are used for heat dissipation.

[0100] Step 3: At the same time, the heat dissipation fan 76 is started to further achieve rapid heat dissipation.

[0101] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-current relay integrated electric energy meter for tidal bidirectional measurement, comprising an outer shell (10) and an inner shell (11) assembled with each other, wherein a measuring inner cavity (12) is formed between the outer shell (10) and the inner shell (11), and characterized in that: A No. 1 circuit board (2) is further provided in the metering cavity (12) formed by the outer shell (10) and the inner shell (11), a No. 2 circuit board (3) is provided on one side of the No. 1 circuit board (2), a high-power relay (4) is welded on the No. 2 circuit board (3), a metering module (5) is provided on the No. 1 circuit board (2), and the high-power relay (4) and the metering module (5) are vertically integrated; an electromagnetic isolation layer (6) is provided between the No. 2 circuit board (3) and the No. 1 circuit board (2) for isolating electromagnetic and heat, the electromagnetic isolation layer (6) being a corrugated structure, and a heat dissipation device (7) is provided on the high-power relay (4); the heat dissipation device (7) comprises heat-conducting copper tubes (70) laid at equal intervals along the length direction on the No. 2 circuit board (3), a heat dissipation fin (71) is provided on one side of the heat-conducting copper tubes (70), the heat dissipation fins (71) are attached to the side wall of the outer shell (10), and a heat dissipation port for the heat dissipation fins (71) is provided on the side wall of the outer shell (10); Two conductive rods (20) are symmetrically provided on the width direction of the No. 2 circuit board (3), and sliding conductive sheets (21) are respectively installed on the two conductive rods (20) through wires in the vertical direction. An auxiliary bracket (22) is installed on the conductive sheet (21) to assist its movement and to insulate. The auxiliary bracket (22) is slidably provided on the No. 2 circuit board (3), and a centering rod (23) is installed between the two auxiliary brackets (22) on the same vertical straight line. The sides of the two centering rods (23) that are close to each other are of a sawtooth structure, and a centering gear (24) is meshed between the two centering rods (23), and the centering gear (24) is rotatably provided on the No. 2 circuit board (3); a reset insulating spring (25) is provided between the centering rod (23) and the No. 2 circuit board (3); An adjusting screw (30) and a limiting rod (31) parallel to each other are rotatably connected to the inner wall of the housing (10). An adjusting block (32) is provided on the adjusting screw (30) and the limiting rod (31). One side of the adjusting block (32) is an inclined structure. A linkage rod (33) is installed on the center rod (23) on one side. The linkage rod (33) and the adjusting block (32) are on the same plane. Two fixing frames (72) are symmetrically provided in the length direction of the second circuit board (3), and a T-shaped slide groove (73) is provided on the fixing frame (72). A T-shaped block (74) is slidably provided in the T-shaped slide groove (73) of the fixing frame (72). The heat-conducting copper tube (70) is horizontally provided on the T-shaped block (74) on the same horizontal straight line on the two fixing frames (72). The spacing between the plurality of heat-conducting copper tubes (70) is changed by adjusting the spacing between the fixing frames (72).

2. A large current relay integrated electric energy meter for bidirectional flow measurement according to claim 1, characterized in that: The high-power relay (4) is composed of a plurality of small relays (40) of the same model, and the plurality of small relays (40) are mounted on the second circuit board (3) at equal intervals through their own pins (41).

3. The large current relay integrated electric energy meter for bidirectional flow measurement according to claim 1, characterized in that: A circular copper frame (75) is installed on the back side of the heat dissipation fin (71), and one end of the heat-conducting copper tube (70) close to the heat dissipation fin (71) is slidably arranged on the inner side of the circular copper frame (75). A plurality of heat dissipation fans (76) are installed at equal intervals inside the circular copper frame (75).

4. The large current relay integrated electric energy meter for bidirectional flow measurement according to claim 1, characterized in that: A plurality of trapezoidal adjustment plates (77) are slidably mounted on one side of the fixing frame (72), and one side of the trapezoidal adjustment plate (77) close to the T-shaped block (74) is arranged in an inclined plane, and the inclined plane on one side of the trapezoidal adjustment plate (77) abuts against the corner of the T-shaped block (74).

5. The large current relay integrated electric energy meter for bidirectional flow measurement according to claim 1, characterized in that: A guide column (79) is installed in the T-shaped slide groove (73) of the fixed frame (72), and the T-shaped block (74) is slidably arranged on the guide column (79). A telescopic spring (80) is provided between the two T-shaped blocks (74) located on the outer side of the guide column (79) and the inner wall of the fixed frame (72), and the telescopic spring (80) is sleeved on the guide column (79).

6. The large current relay integrated electric energy meter for tidal current bidirectional measurement according to claim 1, characterized in that: The fixed frame (72) is also provided with a linkage screw (81), the trapezoidal adjustment plate (77) is screwed to the linkage screw (81) on the fixed frame (72), and the linkage screw (81) and the adjustment screw (30) are both equipped with a linkage gear (84), and the linkage gear (84) is provided with a linkage toothed belt (85).

7. The large current relay integrated electric energy meter for bidirectional flow measurement according to claim 4, characterized in that: An extension rod (90) is also installed on the trapezoidal adjustment plate (77), and an extension block (91) is installed at one end of the extension rod (90) away from the trapezoidal adjustment plate (77). A switch (92) is installed on the heat dissipation fan (76), and the switches (92) are arranged at equal intervals along a straight line on the circular copper frame (75). A resistance block (93) is slidably provided on the switch (92), and a resistance spring (94) is connected between the resistance block (93) and the outer wall of the circular copper frame (75). The extension block (91) and the resistance block (93) are on the same straight line. When the extension block (91) moves, the resistance block (93) is squeezed so that the resistance block (93) controls the opening and closing of the switch (92).

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