A three-phase metering module

Abstract

The utility model discloses a three -phase measurement module, including first casing, second casing, mutual inductor, press line frame subassembly, copper bar and circuit board, be provided with three press line frame subassembly grooves in the first casing, and press line frame subassembly is placed into press line frame subassembly groove, be provided with mutual inductor groove in the first casing, and mutual inductor is placed into mutual inductor groove, the center of mutual inductor groove is provided with copper bar groove, and copper bar groove is communicated with press line frame subassembly groove, and copper bar is from the front side via copper bar groove and extends into press line frame subassembly groove and is placed into press line frame subassembly, and the both sides wall of first casing is provided with circuit board groove, and circuit board is inserted and is set through circuit board groove, and mutual inductor and copper bar all are connected with circuit board electricity to gather current signal and voltage signal, and second casing is provided with copper bar hole through, when second casing is installed to first casing, copper bar respectively from copper bar hole and is worn, and second casing is inverted L shape, and second casing is vertical wall and bottom plate in particular, and vertical wall closes the front side of first casing, and bottom plate closes the bottom of first casing.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a three-phase metering module. Background Technology

[0002] In multi-circuit power distribution systems, energy consumption needs to be metered individually for each circuit to achieve energy consumption monitoring and management. In existing technologies, each distribution circuit requires a three-phase energy meter and a current transformer installed at the downstream end of a three-phase miniature circuit breaker (for circuit protection) to complete the energy metering function.

[0003] This traditional configuration scheme has the following drawbacks:

[0004] High cost: Each circuit requires the separate purchase of a three-phase energy meter, current transformer and matching wiring accessories, resulting in a high overall equipment purchase cost.

[0005] Complex wiring: Multiple sets of lines need to be connected between the energy meter and the current transformer and miniature circuit breaker. The wiring steps are complicated, and wiring errors are easy to occur, which increases the difficulty of debugging.

[0006] Large space occupation: Electricity meters and current transformers are independent components, requiring separate installation space in the distribution box, which increases the size of the distribution box. This space occupation problem is even more prominent in multi-circuit scenarios. Utility Model Content

[0007] This utility model addresses the problems and shortcomings of existing technologies by providing a novel three-phase metering module.

[0008] The present invention solves the above-mentioned technical problems through the following technical solution:

[0009] This utility model provides a three-phase metering module, including a first housing, a second housing, a current transformer, a wire clamping frame assembly, a copper busbar, and a circuit board;

[0010] The wire clamping frame assembly consists of three sets. Three wire clamping frame assembly slots are arranged vertically side by side inside the first housing, and the three sets of wire clamping frame assemblies are placed into the three wire clamping frame assembly slots. A locking screw hole is provided on the top of the first housing corresponding to the wire clamping frame assembly slot, and a wiring hole is provided on the rear side of the first housing corresponding to the wire clamping frame assembly slot.

[0011] There are three current transformers. Three current transformer slots are provided on the front side of the pressure frame assembly slot in the first housing. The three current transformers are inserted into the three current transformer slots from the front side.

[0012] There are three copper busbars. The center of the current transformer slot is provided with a copper busbar slot corresponding to the copper busbar. The copper busbar slot is connected to the pressure frame assembly slot. The copper busbar extends from the front side through the copper busbar slot into the pressure frame assembly slot and is placed into the pressure frame assembly.

[0013] The first housing has circuit board slots on both sides of the horizontal direction. The circuit board slots are located below the current transformer slots. The circuit board is inserted into the first housing through the circuit board slots.

[0014] The copper busbar is provided with a voltage signal terminal, and both the current transformer and the voltage signal terminal are electrically connected to the circuit board to collect current signals and voltage signals.

[0015] The second housing is provided with copper busbar holes corresponding to the copper busbars. There are three copper busbar holes. When the second housing is installed on the first housing, the three copper busbars pass through the copper busbar holes to connect to the three-phase circuit breaker.

[0016] The second housing is in the shape of an inverted L. The second housing has a vertical wall and a bottom plate. The second housing covers the first housing from the front and bottom. The vertical wall closes the front of the first housing and the bottom plate closes the bottom of the first housing.

[0017] Preferably, the circuit also includes three temperature sensors. A notch is provided below the copper busbar groove. The inner wall of the current transformer, the notch, and the copper busbar form a receiving cavity, in which the temperature sensors are placed. The temperature sensors are electrically connected to the circuit board to collect temperature signals.

[0018] Preferably, the circuit board is provided with a signal interface, and both the current transformer and the voltage signal terminal are electrically connected to the signal interface of the circuit board.

[0019] Preferably, a data interface is provided on the upper part of one end of the circuit board near the rear side of the first housing; a data interface slot is provided through the top of the rear side of the first housing, and an external data transmission line is connected to the data interface via the data interface slot.

[0020] Preferably, the copper busbar hole is provided in the vertical wall, and a circuit board positioning groove is provided in the lower part of the inner side of the vertical wall. When the second housing is installed into the first housing, the end of the circuit board is located in the circuit board positioning groove.

[0021] Preferably, the two ends of the vertical wall of the second housing are provided with buckles, and the front side of the two side walls of the first housing is provided with buckle grooves that match the buckles. The first housing and the second housing are connected by the buckles and the buckle grooves.

[0022] The positive and progressive effects of this utility model are as follows:

[0023] The three-phase metering module provided by this utility model integrates current acquisition (current transformer), voltage acquisition (copper busbar), temperature monitoring (temperature sensor), and energy metering (circuit board) functions, eliminating the need for an additional energy meter and simplifying equipment composition. Installation is convenient; the module size matches three-phase miniature circuit breakers and can be directly assembled with them as a protection and metering component, reducing wiring steps. In multi-circuit scenarios, only batch installation of protection and metering components is required, improving construction efficiency. It saves space; the integrated structure replaces the traditional dispersed configuration of "miniature circuit breaker + energy meter + current transformer," significantly reducing installation space in the distribution box and facilitating miniaturized design of the power distribution system. It also reduces costs by decreasing the number of independent devices required and lowering labor costs for wiring and debugging, thus reducing the overall metering configuration cost of the power distribution circuit. Attached Figure Description

[0024] Figure 1 This is an exploded view of the three-phase metering module according to an embodiment of the present invention;

[0025] Figures 2(a)-(c) are schematic diagrams of the first shell structure of this utility model embodiment;

[0026] Figures 3(a)-(b) are schematic diagrams of the second shell structure of an embodiment of the present invention;

[0027] Figures 4(a)-(g) are schematic diagrams of the assembly process of the three-phase metering module according to an embodiment of the present invention;

[0028] Figures 5(a)-(c) are schematic diagrams of the current transformer, wire frame assembly and copper busbar installed in the first housing according to an embodiment of the present invention;

[0029] Figures 6(a)-(d) are schematic diagrams of the assembly process of the protective metering device according to an embodiment of the present invention. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] Please see Figure 1Figure 5 shows a three-phase metering module provided in this embodiment, including a first housing 1, a second housing 2, a current transformer 3, a wire clamping frame assembly 4, a copper busbar 5, a temperature sensor 6, and a circuit board 7.

[0032] The wire clamping frame assembly 4 consists of three sets. The rear side of the first housing 1 has three wire clamping frame assembly slots 1d arranged vertically side by side for the three sets of wire clamping frame assembly 4. The three sets of wire clamping frame assembly 4 are inserted into the three wire clamping frame assembly slots 1d from below. The top of the first housing 1 has a locking screw hole 1e that passes through the wire clamping frame assembly slot 1d. The rear side of the first housing 1 has a wiring hole 1f that passes through the wire clamping frame assembly slot 1d.

[0033] There are three current transformers 3. In the first housing 1, the front side of the voltage frame assembly slot 1d is provided with three current transformer slots 1a, which are arranged side by side with the three current transformers 3. The three current transformers 3 are inserted into the three current transformer slots 1a from the front side.

[0034] There are three copper busbars 5. The center of the transformer slot 1a is provided with a copper busbar slot 1b corresponding to the copper busbar 5. The copper busbar slot 1b is connected to the wire frame assembly slot 1d. The copper busbar 5 extends from the front through the copper busbar slot 1b into the wire frame assembly slot 1b and is placed into the wire frame assembly 4.

[0035] The two side walls of the first housing 1 are provided with circuit board slots 1g in the horizontal direction. The circuit board slots 1g are located below the transformer slots 1a. The circuit board 7 is inserted into the first housing 1 through the circuit board slots 1g, as shown in Figures 5(a) and 5(b).

[0036] There are three temperature sensors 6. A notch 1c is provided below the copper busbar groove 1b. The inner wall of the current transformer 3, the notch 1c and the copper busbar 5 form a receiving cavity, as shown in Figure 5(b). The temperature sensors 6 are placed in the receiving cavity.

[0037] The copper busbar 5 is equipped with a voltage signal terminal, and the circuit board 7 is equipped with a signal interface 7a. The current transformer 3, the voltage signal terminal, and the temperature sensor 6 are all electrically connected to the signal interface 7a of the circuit board 7 to collect current signals, voltage signals, and temperature signals.

[0038] The second housing 2 has three copper busbar holes 2a corresponding to the copper busbar 5. When the second housing 2 is installed on the first housing 1, the three copper busbars 5 pass through the copper busbar holes 2a respectively to connect the three-phase circuit breaker.

[0039] In some embodiments, a data interface 7b is provided on the upper part of one end of the circuit board 7 near the rear side of the first housing 1; a data interface slot 1h is provided through the top of the rear side of the first housing 1, and the external data transmission line 104 is connected to the data interface 7b via the data interface slot 1h.

[0040] In some embodiments, the second housing 2 is in the shape of an inverted L, and the second housing 2 specifically has a vertical wall and a bottom plate. The second housing 2 covers the first housing 1 from the front side and the bottom part, the vertical wall closes the front side of the first housing 1, and the bottom plate closes the bottom of the first housing 1.

[0041] In some embodiments, copper busbar holes 2a are provided in a vertical wall, and a circuit board positioning groove 2b is provided in the lower part of the inner side of the vertical wall. When the second housing 2 is installed into the first housing 1, the end of the circuit board 7 is located in the circuit board positioning groove 2b.

[0042] In some embodiments, the two ends of the vertical wall of the second housing 2 are provided with buckles 2c, and the front side of the two side walls of the first housing 1 is provided with buckle grooves 1i that match the buckles 2c. The first housing 1 and the second housing 2 are connected by buckles 2c and buckle grooves 1i.

[0043] Please refer to Figure 4. This utility model also provides an assembly method for the above-mentioned three-phase metering module, including the following steps:

[0044] A first housing 1 and three current transformers 3 are provided, and the current transformers 3 are sequentially installed into the current transformer slots 1a of the first housing 1.

[0045] Three sets of wire pressing frame assemblies 4 are provided, and the wire pressing frame assemblies 4 are sequentially installed into the wire pressing frame assembly slot 1d of the first housing 1.

[0046] Three copper busbars 5 are provided. The copper busbars 5 are inserted into the wire frame assembly slot 1d through the copper busbar slot 1b and fixed in the wire frame assembly 4, and maintain good contact with the wire frame assembly 4, as shown in Figure 5(b).

[0047] A temperature sensor 6 is provided and installed in the cavity formed by the inner wall of the current transformer 3, the notch 1c of the copper busbar groove 1b and the copper busbar 5, so that the temperature sensor 6 is in contact with the lower end face of the copper busbar 5, as shown in Figure 5(c).

[0048] A circuit board 7 is provided, and the circuit board 7 is installed into the first housing 1 along the circuit board groove 1g of the first housing 1.

[0049] A second housing 2 is provided, which is then fitted onto the first housing 1 from the front and bottom. A copper busbar 5 extends from the copper busbar hole 2a of the second housing 2, and the end of the circuit board 7 is placed in the circuit board positioning groove 2b. The latch 2c of the second housing 2 is fastened to the latch groove 1i of the first housing 1 to complete the installation.

[0050] Please refer to Figure 6. This utility model also provides a protection metering device, including multiple sets of protection metering components 103 and a monitoring host 105. The protection metering component 103 includes a three-phase circuit breaker 102 and the aforementioned three-phase metering module 101. The copper busbar 5 of the three-phase metering module 101 is inserted into the output end of the three-phase circuit breaker 102 and locked to form the protection metering component 103. The monitoring host 105 and the multiple sets of protection metering components 103 are arranged in sequence. The monitoring host 105 is connected to the data interface 7b of the multiple three-phase metering modules 101 in sequence through the data transmission line 104.

[0051] In summary, the three-phase metering module provided by this utility model adopts a compact structural design that integrates signal acquisition and power metering functions into one unit, and also integrates temperature monitoring functions. Its design size can match three-phase circuit breakers, and it can be assembled with three-phase circuit breakers to form a protection metering component 103. It occupies little space, is easy to install, and can replace the traditional power distribution circuit metering configuration scheme, reducing costs, simplifying installation, and improving construction efficiency.

[0052] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A three-phase metering module, characterized in that, Includes a first housing, a second housing, a current transformer, a wire clamping frame assembly, copper busbars, and a circuit board; The wire clamping frame assembly consists of three sets. Three wire clamping frame assembly slots are arranged vertically side by side inside the first housing, and the three sets of wire clamping frame assemblies are placed into the three wire clamping frame assembly slots. A locking screw hole is provided on the top of the first housing corresponding to the wire clamping frame assembly slot, and a wiring hole is provided on the rear side of the first housing corresponding to the wire clamping frame assembly slot. There are three current transformers. Three current transformer slots are provided on the front side of the pressure frame assembly slot in the first housing. The three current transformers are inserted into the three current transformer slots from the front side. There are three copper busbars. The center of the current transformer slot is provided with a copper busbar slot corresponding to the copper busbar. The copper busbar slot is connected to the pressure frame assembly slot. The copper busbar extends from the front side through the copper busbar slot into the pressure frame assembly slot and is placed into the pressure frame assembly. The first housing has circuit board slots on both sides of the horizontal direction. The circuit board slots are located below the current transformer slots. The circuit board is inserted into the first housing through the circuit board slots. The copper busbar is provided with a voltage signal terminal, and both the current transformer and the voltage signal terminal are electrically connected to the circuit board to collect current signals and voltage signals. The second housing is provided with copper busbar holes corresponding to the copper busbars. There are three copper busbar holes. When the second housing is installed on the first housing, the three copper busbars pass through the copper busbar holes to connect to the three-phase circuit breaker. The second housing is in the shape of an inverted L. The second housing has a vertical wall and a bottom plate. The second housing covers the first housing from the front and bottom. The vertical wall closes the front of the first housing and the bottom plate closes the bottom of the first housing.

2. The three-phase metering module as described in claim 1, characterized in that, It also includes temperature sensors, of which there are three. A notch is provided below the copper busbar groove. The inner wall of the current transformer, the notch and the copper busbar form a receiving cavity, and the temperature sensors are placed in the receiving cavity. The temperature sensors are electrically connected to the circuit board to collect temperature signals.

3. The three-phase metering module as described in claim 1, characterized in that, The circuit board is provided with a signal interface, and the current transformer and the voltage signal terminal are both electrically connected to the signal interface of the circuit board.

4. The three-phase metering module as described in claim 1, characterized in that, A data interface is provided on the upper part of the circuit board near the rear side of the first housing; a data interface slot is provided through the top of the rear side of the first housing, and an external data transmission line is connected to the data interface via the data interface slot.

5. The three-phase metering module as described in claim 1, characterized in that, The copper busbar holes are provided in the vertical wall, and a circuit board positioning groove is provided on the lower part of the inner side of the vertical wall. When the second housing is installed on the first housing, the end of the circuit board is located in the circuit board positioning groove.

6. The three-phase metering module as described in claim 1, characterized in that, The second housing has buckles at both ends of its vertical wall, and the front sides of the two side walls of the first housing have buckle grooves that match the buckles. The first housing and the second housing are connected by the buckles and the buckle grooves.

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