Three-phase 4P rail table

Abstract

The utility model discloses a three -phase 4P rail table relates to power equipment technical field, this three -phase 4P rail table, including the shell and the first fire line wiring board, second fire line wiring board, third fire line wiring board and zero line wiring board of setting in the shell inside, still include: set in the anti -drop subassembly of shell one end and the other end. The utility model design is reasonable, and simple structure, through setting up the connecting pin and the upper cover board can make the connecting pin between the mutual inductor body on the shell inside and the upper cover board adopt the mode of inserting and connecting, avoided the process when mutual inductor and other components connect in the conventional three -phase 4P rail electric meter, mostly use wire to connect, because electric meter belongs to a kind of long -term continuous operation electric appliance, internal wire is numerous, is easy to cause the interference between three -phase, can even cause the unsafe accident of wire hunting, help to improve the reliability of three -phase 4P rail electric meter use.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically a three-phase 4P rail meter. Background Technology

[0002] A three-phase 4P DIN rail meter (three-phase four-wire DIN rail energy meter) is a metering device used to measure the energy consumption in a three-phase AC power grid. It is usually installed on a DIN rail and is suitable for industrial, commercial and intelligent power distribution systems.

[0003] In existing conventional three-phase 4P rail meters, the connection between the current transformer and other components is mostly achieved by inserting wires. Since the meter is an electrical appliance that operates continuously for a long time, a large number of internal wires can easily cause interference between the three phases, and may even lead to unsafe accidents such as wire misalignment. This makes it difficult to improve the reliability of the three-phase 4P rail meter. In addition, the wiring cable of the three-phase 4P rail meter may become loose from the terminal due to vibration or thermal expansion and contraction, which may lead to phase-to-phase short circuits or grounding faults, making it difficult to maintain the stability of the connection. Utility Model Content

[0004] This utility model provides a three-phase 4P rail meter, which has the advantages of reducing the connection between the current transformer and other components and preventing loosening, so as to solve the problems of existing three-phase 4P rail meters that are not easy to improve the reliability of use and are not easy to maintain connection stability.

[0005] To reduce the connection between the current transformer and other components and prevent loosening, this utility model provides the following technical solution: a three-phase 4P rail meter, including a meter housing and a first live wire terminal block, a second live wire terminal block, a third live wire terminal block, and a neutral wire terminal block disposed inside the meter housing, and further including:

[0006] An anti-detachment assembly is provided at one end and the other end of the watch case. The anti-detachment assembly includes a limiting clip, a rotating connector, a limiting upper part, a fixing fastener, and a rubber pressing part.

[0007] A limiting assembly is disposed on one side of the surface of the limiting upper part, the limiting assembly including a limiting mounting tube, a return spring and a limiting rod;

[0008] The current transformer bodies are installed on the surfaces of the first live wire terminal block, the second live wire terminal block, and the third live wire terminal block. Each of the three current transformer bodies has a connecting pin fixedly connected to its connection end, and a top cover plate is inserted into the surface of the connecting pin.

[0009] As a preferred technical solution of this utility model, the anti-slip component includes a limiting clip fixedly connected to one end and the other end of the watch case. One side of the surface of the limiting clip is movably connected to a limiting upper part through a rotating connector. One end of the limiting upper part is fixedly connected to a fixing fastener, and the bottom surface of the limiting upper part is fixedly connected to four rubber pressing parts.

[0010] As a preferred technical solution of this utility model, the inner bottom wall of the fixing fastener and the other side of the surface of the limiting card are both provided with limiting holes.

[0011] As a preferred technical solution of this utility model, the limiting component includes a limiting mounting tube fixedly connected to one side of the surface of the limiting upper part. The bottom surface of the limiting mounting tube is provided with a through hole and a groove. A return spring is fixedly connected to the inner bottom wall of the groove. One end of the return spring is fixedly connected to a limiting plug rod. The limiting plug rod is inserted into the inside of the through hole, and the through hole is adapted to the limiting hole.

[0012] As a preferred embodiment of this utility model, the watch case is provided with four wiring ports at one end and the other end. Each of the four wiring ports is fixedly installed with a wiring terminal piece. The top surface of the wiring terminal piece is provided with a threaded hole, and the threaded hole is threaded with a mounting bolt.

[0013] As a preferred technical solution of this utility model, a guide rail groove is provided on the bottom surface of the watch case, which facilitates the sliding connection of the three-phase P-rail watch to the guide rail.

[0014] As a preferred embodiment of this utility model, connecting cylinders are fixedly connected to both sides of the inner wall of the watch case, and threaded grooves are formed on the inner wall of the connecting cylinders.

[0015] As a preferred technical solution of this utility model, mounting holes are provided around the four sides of the surface of the upper cover plate, and the mounting holes are adapted to the top of the connecting column.

[0016] Compared with the prior art, this utility model provides a three-phase 4P rail gauge, which has the following beneficial effects:

[0017] This three-phase 4P rail meter, through the setting of connecting pins and a top cover plate, allows the connecting pins on the current transformer body inside the meter casing to be connected to the top cover plate via a plug-in method. In use, the three current transformer bodies are installed to the first, second, and third live wire terminals respectively, with the side with the connecting pin facing upwards. Then, the socket on the top cover plate is connected to the connecting pin, thus fixing the current transformer of the three-phase 4P rail meter in place. This avoids the common practice in conventional three-phase 4P rail meters of using wires to connect the current transformer to other components. Since the meter is a continuously operating electrical appliance with numerous internal wires, it is prone to interference between the three phases and may even cause unsafe accidents such as wire misalignment. This design helps improve the reliability of the three-phase 4P rail meter.

[0018] This three-phase 4P rail meter prevents the wiring cable from coming loose by incorporating anti-detachment and limit components. During use, after installing the wiring cable, place it into the slot of the limit clamp, then move the upper limit component and pull the limit rod upwards, allowing the fixing fastener to engage with one end of the limit clamp surface. Then release the limit rod; the return spring is elastic, allowing the limit rod to insert into the through hole and limit hole. The rubber pressure component presses down on the top surface of the wiring cable, limiting its movement. This prevents the wiring cable from coming loose from the terminals due to vibration or thermal expansion and contraction, which could lead to phase-to-phase short circuits or grounding faults, thus helping to maintain a stable connection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the current transformer body and connecting pin structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the anti-detachment component and the limiting component of this utility model.

[0023] In the diagram: 1. Case; 2. First live wire terminal block; 3. Second live wire terminal block; 5. Neutral wire terminal block; 6. Anti-disengagement component; 601. Limiting clip; 602. Rotating connector; 603. Upper limiting component; 604. Fixing fastener; 605. Rubber pressing component; 7. Limiting component; 701. Limiting mounting tube; 702. Return spring; 703. Limiting rod; 8. Current transformer body; 9. Connecting pin; 10. Top cover plate; 11. Terminal block; 12. Mounting bolt; 13. Guide rail groove; 14. Third live wire terminal block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 This utility model discloses a three-phase 4P rail meter, including a meter case 1 and a first live wire terminal block 2, a second live wire terminal block 3, a third live wire terminal block 14, and a neutral wire terminal block 5 disposed inside the meter case 1. It also includes:

[0026] Anti-detachment components 6 are provided at one end and the other end of the watch case 1. The anti-detachment components 6 include a limiting clip 601, a rotating connector 602, a limiting upper part 603, a fixing buckle 604, and a rubber pressing part 605.

[0027] A limiting component 7 is provided on one side of the surface of the limiting upper part 603. The limiting component 7 includes a limiting mounting tube 701, a return spring 702 and a limiting insertion rod 703.

[0028] The current transformer bodies 8 are installed on the surfaces of the first live wire terminal block 2, the second live wire terminal block 3, and the third live wire terminal block 14. Each of the three current transformer bodies 8 has a connecting pin 9 fixedly connected to its connection end. A top cover plate 10 is inserted into the surface of the connecting pin 9. In use, the three current transformer bodies 8 are installed on the first live wire terminal block 2, the second live wire terminal block 3, and the third live wire terminal block 14 respectively, with the side with the connecting pin 9 facing upwards. Then, the socket on the top cover plate 10 is connected to the connecting pin 9, thereby fixing the current transformer of the three-phase 4P rail meter.

[0029] Specifically, the anti-slip component 6 includes a limiting clip 601 fixedly connected to one end and the other end of the watch case 1. One side of the surface of the limiting clip 601 is movably connected to a limiting upper component 603 via a rotating connector 602. One end of the limiting upper component 603 is fixedly connected to a fixing fastener 604, and the bottom surface of the limiting upper component 603 is fixedly connected to four rubber pressing components 605. Limiting holes are provided on the inner bottom wall of the fixing fastener 604 and the other side of the surface of the limiting clip 601.

[0030] In this embodiment, after the wiring cable is installed, the wiring cable is placed into the slot of the limiting clip 601, and then the upper limiting piece 603 is moved so that the fixing fastener 604 is locked at one end of the surface of the limiting clip 601.

[0031] Specifically, the limiting component 7 includes a limiting mounting tube 701 fixedly connected to one side of the surface of the limiting upper part 603. The bottom surface of the limiting mounting tube 701 has a through hole and a groove. A return spring 702 is fixedly connected to the inner bottom wall of the groove. One end of the return spring 702 is fixedly connected to a limiting insertion rod 703. The limiting insertion rod 703 is inserted into the inside of the through hole, and the through hole and the limiting hole are compatible.

[0032] In this embodiment, the limiting rod 703 is pulled upwards, causing the fixing fastener 604 to lock onto one end of the limiting fastener 601. Then the limiting rod 703 is released, and the return spring 702 is elastic, allowing the limiting rod 703 to be inserted into the through hole and the limiting hole. The rubber pressing member 605 presses down on the top surface of the wiring cable to limit its movement.

[0033] Specifically, the watch case 1 has four wiring ports at one end and the other end. Each of the four wiring ports has a wiring terminal piece 11 fixedly installed inside. The top surface of the wiring terminal piece 11 has a threaded hole, and the threaded hole is connected to a mounting bolt 12.

[0034] In this embodiment, the wiring cables are installed to the wiring ports at one end and the other end of the case 1, and then the mounting bolts 12 are tightened to allow for connection.

[0035] Specifically, a guide rail groove 13 is provided on the bottom surface of the case 1, which facilitates the sliding connection of the three-phase 4P guide rail meter to the guide rail.

[0036] In this embodiment, the guide rail groove 13 allows for easy installation of a three-phase 4P rail meter on the guide rail.

[0037] Specifically, connecting cylinders are fixedly connected to both sides of the inner wall of the watch case 1, and threaded grooves are opened on the inner wall of the connecting cylinders.

[0038] In this implementation scheme, the connection of the connecting column facilitates the connection of the corresponding watch cover.

[0039] Specifically, mounting holes are provided around the surface of the upper cover plate 10, and the mounting holes are adapted to the top of the connecting column.

[0040] In this embodiment, the upper cover plate 10 facilitates the installation of the connection pins 9 of the current transformer body 8.

[0041] The working principle and usage process of this utility model are as follows: Install the three-phase 4P rail meter on the rail, install the three current transformer bodies 8 with the first live wire terminal block 2, the second live wire terminal block 3 and the third live wire terminal block 14 respectively, with the side with the connecting pin 9 facing upwards, and then connect the socket on the upper cover plate 10 with the connecting pin 9. Install the wiring cables to the wiring ports at one end and the other end of the meter case 1 respectively, and then tighten the mounting bolt 12 to make it possible to connect. After the wiring cables are installed, place the wiring cables into the slots of the limiting clip 601 respectively, and then move the upper limiting piece 603, pull the limiting rod 703 upwards, so that the fixing fastener 604 is locked at one end of the surface of the limiting clip 601, and then release the limiting rod 703. The return spring 702 is elastic, so that the limiting rod 703 is inserted into the through hole and the limiting hole. The rubber pressing piece 605 presses down on the top surface of the wiring cable to limit it.

[0042] In summary, this three-phase 4P rail meter, by setting the connecting pin 9 and the upper cover plate 10, allows the connecting pin 9 on the current transformer body 8 inside the meter casing 1 to be connected to the upper cover plate 10 by a plug-in method. In use, the three current transformer bodies 8 are installed with the first live wire terminal block 2, the second live wire terminal block 3, and the third live wire terminal block 14 respectively, with the side with the connecting pin 9 facing upwards. Then, the socket on the upper cover plate 10 is connected to the connecting pin 9, thereby fixing the current transformer of the three-phase 4P rail meter. This avoids the common practice in conventional three-phase 4P rail meters of using wires to connect the current transformer to other components. Since the meter is an electrical appliance that operates continuously for a long time, it has many internal wires, which can easily cause interference between the three phases and may even lead to unsafe accidents such as wire misalignment. This helps to improve the reliability of the three-phase 4P rail meter.

[0043] By setting the anti-detachment component 6 and the limiting component 7, the purpose of preventing the wiring cable from coming loose can be achieved. In use, after the wiring cable is installed, place the wiring cable into the slot of the limiting clip 601, then move the upper limiting component 603 and pull the limiting rod 703 upward so that the fixing fastener 604 is locked at one end of the surface of the limiting clip 601. Then release the limiting rod 703. The return spring 702 is elastic, allowing the limiting rod 703 to be inserted into the through hole and the limiting hole. The rubber pressing component 605 presses down on the top surface of the wiring cable to limit it. This prevents the wiring cable of the three-phase 4P rail meter from coming loose from the terminal due to vibration or thermal expansion and contraction, which could lead to phase-to-phase short circuit or grounding fault. This helps to maintain the stability of the connection.

[0044] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-phase 4P rail meter, comprising a meter case (1) and a first live wire terminal block (2), a second live wire terminal block (3), a third live wire terminal block (14), and a neutral wire terminal block (5) disposed inside the meter case (1), characterized in that, Also includes: Anti-detachment components (6) are provided at one end and the other end of the watch case (1). The anti-detachment components (6) include a limiting clip (601), a rotating connector (602), a limiting upper part (603), a fixing buckle (604), and a rubber pressing part (605). A limiting component (7) is provided on one side of the surface of the limiting upper part (603). The limiting component (7) includes a limiting mounting tube (701), a return spring (702), and a limiting rod (703). The transformer bodies (8) are installed on the surfaces of the first live wire terminal block (2), the second live wire terminal block (3) and the third live wire terminal block (14). The connection ends of the three transformer bodies (8) are fixedly connected with connection pins (9), and the surface of the connection pins (9) is inserted with an upper cover plate (10).

2. A three-phase 4P guide rail meter according to claim 1, characterized in that: The anti-detachment component (6) includes a limiting clip (601) fixedly connected to one end of the watch case (1) and the other end. One side of the surface of the limiting clip (601) is movably connected to a limiting upper part (603) through a rotating connector (602). One end of the limiting upper part (603) is fixedly connected to a fixing fastener (604). The bottom surface of the limiting upper part (603) is fixedly connected to four rubber pressing parts (605).

3. A three-phase 4P guide rail meter according to claim 2, characterized in that: Limiting holes are provided on the inner bottom wall of the fixing fastener (604) and on the other side of the surface of the limiting clip (601).

4. A three-phase 4P guide rail meter according to claim 1, characterized in that: The limiting component (7) includes a limiting mounting tube (701) fixedly connected to one side of the surface of the limiting upper part (603). The bottom surface of the limiting mounting tube (701) is provided with a through hole and a groove. A reset spring (702) is fixedly connected to the inner bottom wall of the groove. One end of the reset spring (702) is fixedly connected to a limiting plug (703). The limiting plug (703) is inserted into the inside of the through hole. The through hole and the limiting hole are compatible.

5. A three-phase 4P rail meter according to claim 1, characterized in that: The watch case (1) has four wiring ports at one end and the other end. Each of the four wiring ports has a wiring terminal piece (11) fixedly installed inside. The top surface of the wiring terminal piece (11) has a threaded hole, and the inside of the threaded hole is threaded with a mounting bolt (12).

6. A three-phase 4P rail meter according to claim 1, characterized in that: The bottom surface of the watch case (1) is provided with a guide rail groove (13), which facilitates the sliding connection of the three-phase 4P guide rail watch to the guide rail.

7. A three-phase 4P rail meter according to claim 1, characterized in that: Both sides of the inner wall of the watch case (1) are fixedly connected to connecting cylinders, and the inner wall of the connecting cylinders is provided with threaded grooves.

8. A three-phase 4P guide rail meter according to claim 1, characterized in that: The upper cover plate (10) has mounting holes on all four sides, which are adapted to the top of the connecting column.

Images