Three-phase 4P large-current guide rail electric energy meter

Abstract

The utility model discloses a three-phase 4P large-current guide rail electric energy meter which is low in interference and small in size. According to the technical scheme, the wiring terminal comprises a base, an upper cover installed at the upper end of the base and a circuit board installed in the base, four symmetrical wiring ports are formed in the two ends of the base, and a wiring terminal assembly is arranged in each wiring port. A first live wire connector bar, a second live wire connector bar, a third live wire connector bar and a zero wire connector bar are arranged between the opposite wiring ports; two ends of the first live wire connector bar are bent to form a first wire inlet end wiring part and a first wire outlet end wiring part; two ends of the second live wire connector bar are bent to form a second wire inlet end wiring part and a second wire outlet end wiring part; and two ends of the third live wire connector bar are bent to form a third wire inlet end wiring part and a third wire outlet end wiring part.

Description

Technical Field

[0001] The utility model belongs to the field of electricity, and in particular relates to a guide rail type electric meter case. Background Art

[0002] The multifunctional three-phase 4P rail energy meter is an intelligent power meter that integrates energy metering, measurement and data communication. It is mainly used in industries such as industry, construction, commerce and public utilities to accurately measure and control various parameters in the electrical system to achieve energy metering and quality analysis. The structure of the traditional three-phase 4P rail energy meter includes: a base, an upper cover installed on the upper end of the base and a circuit board installed in the base. The two ends of the base are provided with four symmetrical wiring ports, each wiring port is provided with a wiring terminal assembly, and three live wires and one neutral wire are connected between the wiring terminal assemblies. A current transformer is provided on each live wire. Traditional current transformers are usually set on the same side of the live wire, and the current transformers are close to each other. When used for large current energy meters, there will be certain interference, and in order to meet the assembly of the current transformer, a larger base is required. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a three-phase 4P large current rail electric energy meter with less interference and small volume.

[0004] In order to solve the above problems, the technical solution adopted by the utility model includes: comprising a base, an upper cover installed on the upper end of the base and a circuit board installed in the base, two ends of the base are provided with four symmetrical wiring ports, each of the wiring ports is provided with a wiring terminal assembly, characterized in that: a first live wire wiring row, a second live wire wiring row, a third live wire wiring row and a neutral wire wiring row are respectively provided between the opposite wiring ports;

[0005] The two ends of the first live wire terminal block are bent to form a first incoming terminal connection part and a first outgoing terminal connection part; the two ends of the second live wire terminal block are bent to form a second incoming terminal connection part and a second outgoing terminal connection part; the two ends of the third live wire terminal block are bent to form a third incoming terminal connection part and a third outgoing terminal connection part; the two ends of the neutral wire terminal block are bent to form a fourth incoming terminal connection part and a fourth outgoing terminal connection part; mutual inductors are arranged on the first incoming terminal connection part, the third incoming terminal connection part and the second outgoing terminal connection part.

[0006] The three-phase 4P high-current rail electric energy meter is characterized in that the middle sections of the first live wire terminal block, the second live wire terminal block, the third live wire terminal block and the neutral wire terminal block are close to the bottom of the base.

[0007] The three-phase 4P high-current rail watt-hour meter is characterized in that the first live wire terminal block, the second live wire terminal block, the third live wire terminal block, and the neutral wire terminal block are all integrally formed with sampling terminals whose positions are staggered from each other.

[0008] The three-phase 4P high-current rail energy meter is characterized in that the terminal assembly includes a wiring frame and a screw connected to the top of the wiring frame, and the bottom of the wiring frame is provided with anti-slip grooves.

[0009] The three-phase 4P high-current rail electric energy meter is characterized in that the first incoming line connection part, the first outgoing line connection part, the second incoming line connection part, the second outgoing line connection part, the third incoming line connection part, the third outgoing line connection part, the fourth incoming line connection part, and the fourth outgoing line connection part are provided with anti-slip grooves at the bottom.

[0010] The three-phase 4P high-current rail energy meter is characterized in that: the circuit board is connected to the mounting posts on the base by inserting screws into the ear holes at both ends of the circuit board, the upper cover is provided with screw holes corresponding to the screw positions, and the screw holes are provided with lead sealing caps.

[0011] The three-phase 4P high-current rail electric energy meter is characterized in that: wiring sockets are provided at both ends of the circuit board, a positioning platform is provided on the upper cover, and the top of the wiring socket is embedded in the positioning platform.

[0012] The three-phase 4P high-current rail energy meter is characterized in that: the two ends of the upper cover are axially connected with small flip covers covering the terminal block, and the base is provided with a lead seal embedded in the small flip cover, and the lead seal column is provided with a lead seal hole.

[0013] The three-phase 4P high-current rail energy meter is characterized in that: a rotating shaft connected to the upper cover is integrally formed at both ends of the small flip cover, and a groove is provided on the inner side of the rotating shaft.

[0014] The advantages of the three-phase 4P high-current rail watt-hour meter of the utility model are as follows: mutual inductors are arranged on the first incoming line terminal connection part, the third incoming line terminal connection part and the second outgoing line terminal connection part, so that the mutual inductors can be staggered with each other, thereby leaving a sufficiently large safety distance, which can effectively prevent mutual interference and also reduce the volume of the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 This is a schematic diagram of the structure of the utility model three-phase 4P high current rail electric energy meter;

[0017] Figure 2 It is a cross-sectional view of the utility model three-phase 4P high current rail electric energy meter;

[0018] Figure 3 It is an exploded view of the utility model three-phase 4P high current rail watt-hour meter;

[0019] Figure 4 It is a structural schematic diagram of the wiring block of the utility model;

[0020] Figure 5 It is a schematic diagram of the installation of the transformer of the base and the terminal block of the utility model. DETAILED DESCRIPTION

[0021] like Figures 1 to 5 As shown, the three-phase 4P high-current rail electric energy meter of the utility model comprises a base 1, an upper cover 2 installed on the upper end of the base 1 and a circuit board 3 installed in the base 1. The two ends of the base 1 are provided with four symmetrical wiring ports 4, and each wiring port 4 is provided with a wiring terminal assembly 5. A first live wire wiring row 6, a second live wire wiring row 7, a third live wire wiring row 8 and a neutral wire wiring row 9 are respectively provided between the opposite wiring ports 4. The two ends of the first live wire wiring row 6 are formed by bending to form a first incoming terminal wiring portion 10 and a first outgoing terminal wiring portion 11. The two ends of the second live wire wiring row 7 are formed by bending to form a second incoming terminal wiring portion 12 and a second outgoing terminal wiring portion 13. The two ends of the third live wire wiring row 8 are formed by bending to form a third incoming terminal wiring portion 14 and a third outgoing terminal wiring portion 15. The two ends of the neutral wire wiring row 9 are formed by bending to form a fourth incoming terminal wiring portion 16 and a fourth outgoing terminal wiring portion 17. The bent wiring parts are respectively connected to the corresponding terminal assembly 5. A mutual inductor 18 is provided on the first incoming wiring part 10, the third incoming wiring part 14 and the second outgoing wiring part 13.

[0022] Preferably, the middle sections of the first live wire terminal block 6, the second live wire terminal block 7, the third live wire terminal block 8 and the neutral wire terminal block 9 are close to the bottom of the base 1, leaving a middle installation space of the base 1 for the installation of the circuit board 3. After installation, the terminal blocks are away from the circuit board 3 to prevent interference with the circuit board 3.

[0023] Preferably, the first live wire connection row 6, the second live wire connection row 7, the third live wire connection row 8, and the neutral wire connection row 9 are all integrally formed with sampling terminals 19 whose positions are staggered from each other. The sampling terminals 19 are convenient for welding with sampling wires or plugging with female connectors.

[0024] Preferably, the terminal assembly 5 includes a wiring frame 20 and a screw 21 connected to the top of the wiring frame 20, and the bottom of the wiring frame 20 is provided with anti-slip grooves 22. The first incoming terminal connection part 10, the first outgoing terminal connection part 11, the second incoming terminal connection part 12, the second outgoing terminal connection part 13, the third incoming terminal connection part 14, the third outgoing terminal connection part 15, the fourth incoming terminal connection part 16, and the fourth outgoing terminal connection part 17 are provided with anti-slip grooves 22 at the bottom. The anti-slip grooves 22 are provided to improve the strength of the wire after connection.

[0025] Preferably, the circuit board 3 is connected to the mounting posts 25 on the base 1 by inserting screws 24 into the ear hole plates 23 at both ends thereof, and the upper cover 2 is provided with screw holes 26 at positions corresponding to the screws 24, and the screw holes 26 are provided with lead sealing caps 27 to prevent the screws 24 from being opened by unauthorized personnel, thereby preventing electricity theft.

[0026] Preferably, wiring seats 28 are provided at both ends of the circuit board 3, and a positioning platform 29 is provided on the upper cover 2, and the top of the wiring seat 28 is embedded in the positioning platform 29. The wiring seat 28 is used to facilitate wiring, and the positioning platform 29 is used to position the wiring seat 28 to improve the stability of the wiring seat 28.

[0027] Preferably, the upper cover 2 has two ends axially connected with a small flip cover 30 covering the wiring seat 28, and the base 1 is provided with a lead seal column 31 embedded in the small flip cover 30, and the lead seal column 31 is provided with a lead seal hole 32. By inserting a lead seal in the lead seal hole 32, the small flip cover 30 is prevented from being opened by unauthorized personnel, thereby playing a role in preventing electricity theft.

[0028] Preferably, the two ends of the small flip cover 30 are integrally formed with a shaft 33 axially connected to the upper cover 2, and a slot 34 is provided inside the shaft 33. By providing the slot 34, the shaft 33 has tension, so that it is easy to be installed in the upper cover 2.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. A three-phase 4P high current rail electric energy meter, comprising a base (1), an upper cover (2) mounted on the upper end of the base (1), and a circuit board (3) mounted in the base (1), wherein two ends of the base (1) are provided with four symmetrical wiring ports (4), each of the wiring ports (4) is provided with a wiring terminal assembly (5), characterized in that: A first live wire connection block (6), a second live wire connection block (7), a third live wire connection block (8) and a neutral wire connection block (9) are respectively arranged between the opposite connection ports (4); The two ends of the first live wire connection block (6) are bent to form a first incoming wire connection portion (10) and a first outgoing wire connection portion (11); the two ends of the second live wire connection block (7) are bent to form a second incoming wire connection portion (12) and a second outgoing wire connection portion (13); the two ends of the third live wire connection block (8) are bent to form a third incoming wire connection portion (14) and a third outgoing wire connection portion (15); the two ends of the neutral wire connection block (9) are bent to form a fourth incoming wire connection portion (16) and a fourth outgoing wire connection portion (17); and mutual inductors (18) are provided on the first incoming wire connection portion (10), the third incoming wire connection portion (14) and the second outgoing wire connection portion (13).

2. The three-phase 4P high current rail energy meter according to claim 1 is characterized in that: The middle sections of the first live wire connection block (6), the second live wire connection block (7), the third live wire connection block (8) and the neutral wire connection block (9) are close to the bottom of the base (1).

3. The three-phase 4P high current rail energy meter according to claim 1 is characterized in that: The first live wire connection block (6), the second live wire connection block (7), the third live wire connection block (8), and the neutral wire connection block (9) are all integrally formed with sampling terminals (19) whose positions are staggered with each other.

4. The three-phase 4P high current rail energy meter according to claim 1 is characterized in that: The wiring terminal assembly (5) comprises a wiring frame (20) and a screw rod (21) connected to the top of the wiring frame (20); the bottom of the wiring frame (20) is provided with anti-slip grooves (22).

5. The three-phase 4P high current rail energy meter according to claim 4 is characterized in that: The first inlet terminal connection portion (10), the first outlet terminal connection portion (11), the second inlet terminal connection portion (12), the second outlet terminal connection portion (13), the third inlet terminal connection portion (14), the third outlet terminal connection portion (15), the fourth inlet terminal connection portion (16), and the fourth outlet terminal connection portion (17) are provided with anti-slip grooves (22) at the bottom.

6. The three-phase 4P high current rail energy meter according to claim 1 is characterized in that: The circuit board (3) is connected to the mounting posts (25) on the base (1) by inserting screws (24) into the ear holes (23) at both ends of the circuit board (3), and the upper cover (2) is provided with screw holes (26) at positions corresponding to the screws (24), and the screw holes (26) are provided with lead sealing caps (27).

7. The three-phase 4P high current rail energy meter according to claim 1 is characterized in that: Both ends of the circuit board (3) are provided with wiring seats (28), the upper cover (2) is provided with a positioning platform (29), and the top of the wiring seat (28) is embedded in the positioning platform (29).

8. The three-phase 4P high current rail energy meter according to claim 7 is characterized in that: The upper cover (2) has small flip covers (30) axially connected at both ends thereof and covering the wiring seat (28), and the base (1) is provided with a lead sealing column (31) embedded in the small flip cover (30), and the lead sealing column (31) is provided with a lead sealing hole (32).

9. The three-phase 4P high current rail energy meter according to claim 8, characterized in that: A rotating shaft (33) axially connected to the upper cover (2) is integrally formed at both ends of the small flip cover (30), and a slot (34) is provided on the inner side of the rotating shaft (33).

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