Split type mutual inductor electric meter measuring device

Abstract

The application discloses a split-type mutual inductor electric meter metering device and relates to the technical field of electric energy metering. The split-type mutual inductor electric meter metering device comprises an electric energy meter, a connecting mechanism, a dustproof mechanism, a wire fixing mechanism and a storage mechanism. A storage box is fixedly installed on the outer surface of one side of the electric energy meter. The inside of the storage box is placed with a mutual inductor. At least two groups of interfaces are formed in the bottom of the electric energy meter. The split-type mutual inductor electric meter metering device is characterized in that the storage mechanism is used. The storage box is fixedly installed on the outer surface of one side of the electric energy meter. The mutual inductor is placed in the storage box when not in use. The box cover is movably penetrated through the top of the storage box through a limiting rod and is magnetically attracted to the inside bottom of the storage box to realize locking and fixing, so that the mutual inductor and the electric energy meter form an integrated storage structure, thereby avoiding the problem that the mutual inductor is easily lost due to being scattered and placed in the split-type design. When the mutual inductor is taken, the box cover is pulled upwards to make the magnet separate from the adsorption, so that the mutual inductor can be opened. When the mutual inductor is stored, the box cover is pushed back to be automatically adsorbed and locked.

Description

Technical Field

[0001] This invention relates to the field of electricity metering technology, and in particular to a split-type current transformer metering device. Background Technology

[0002] The split-type current transformer metering device adopts a design where the current transformer and the energy meter are separate. The current transformer is installed on the power line to collect current signals, while the energy meter is installed in a location convenient for reading and management. The two are connected by wires to transmit signals. This split design results in the current transformer and energy meter being placed separately before and after use. The current transformer is small in size and easily lost before and after installation in the distribution cabinet. Furthermore, it lacks a fixed storage location when not in use, making storage and management inconvenient. For example, Chinese patent document CN215005561U discloses a combined energy metering box, which includes an instrument box and a current transformer box. Through a combined structure, the incoming and outgoing line units are installed in different compartments, achieving a split-type installation.

[0003] However, the current transformers in this device and some existing devices lack an integrated storage structure on the electricity meter body when not in use. The current transformers and electricity meters are placed separately, which makes them easy to lose and inconvenient to store and carry. Therefore, we propose a split-type current transformer electricity metering device. Summary of the Invention

[0004] The purpose of this invention is to provide a split-type current transformer metering device that can solve the problems of split design, which makes it easy to lose and inconvenient to store.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a split-type current transformer metering device, comprising: An electricity meter has a storage box fixedly installed on one side of its outer surface. The storage box contains a current transformer. At least two sets of interfaces are opened at the bottom of the electricity meter. A connection mechanism is installed on the current transformer and is used to control the opening and closing of the current transformer. The dustproof mechanism, located at the bottom of the electricity meter, is used to prevent dust from entering the interface. The wire fixing mechanism is located directly below the electricity meter and is used to fix the wiring to prevent it from being pulled loose. The storage mechanism is located on the front of the storage box. The storage mechanism includes a lid, limiting rods, and magnets. The lid fits and covers the front of the storage box, and the top of the lid is higher than the top of the storage box. Two sets of limiting rods are fixedly installed on the outer surface of the rear side of the lid. Both sets of limiting rods extend through the top of the storage box and into the interior of the storage box. A set of magnets is fixedly installed at one end of each set of limiting rods. Both sets of magnets are magnetically attracted to the bottom inside the storage box.

[0006] Preferably, the storage mechanism further includes anti-slip texture and observation window. The front outer surface of the lid is engraved with anti-slip texture, and an installation hole is opened through the lid, in which an observation window is installed.

[0007] Preferably, the connecting mechanism includes a first positioning ring, a second positioning ring, a positioning rod, a first spring, and a handle. The current transformer is composed of a first half-shell and a second half-shell. The first half-shell is hinged to the top of the second half-shell. The first positioning ring is fixedly installed on the first half-shell, and the second positioning ring is fixedly installed on the second half-shell. The first positioning ring and the second positioning ring are coaxially arranged. A positioning rod is movably passed through the second positioning ring. One end of the positioning rod is inserted into the first positioning ring, and the other end of the positioning rod is fixedly installed with a handle. A first spring is sleeved on the positioning rod. One end of the first spring is fixedly connected to the handle, and the other end of the first spring is fixedly connected to the second positioning ring.

[0008] Preferably, the dustproof mechanism includes a dustproof plate, a sliding groove, a slider, a second spring, and a lever. The dustproof plate is fitted to the bottom of the energy meter at the interface. Two sets of sliding grooves are opened at the bottom of the energy meter. Two sets of sliders are fixedly installed on the top of the dustproof plate. Both sets of sliders are slidably installed in the corresponding sliding grooves. A second spring is fixedly installed between the two sets of sliders and the inner wall of the corresponding sliding groove. A lever is fixedly installed at the bottom of the dustproof plate.

[0009] Preferably, the wire fixing mechanism includes a suspension rod, a first clamping plate, a second clamping plate, a through rod, an end piece, a third spring, and a rubber pad. The first clamping plate is located directly below the energy meter. Two sets of suspension rods are fixedly installed on the front outer surface of the first clamping plate, and one end of each set of suspension rods is fixedly connected to the front outer surface of the energy meter. The second clamping plate is located on the rear side of the first clamping plate. Two sets of through rods are fixedly installed on the front outer surface of the second clamping plate. One end of each set of through rods extends movably through the first clamping plate to the front side of the first clamping plate and is fixedly installed with a set of end pieces. A set of third springs is sleeved on each set of through rods. One end of each set of third springs is fixedly connected to the corresponding end piece, and the other end of each set of third springs is fixedly connected to the front outer surface of the first clamping plate. A set of rubber pads is fixedly installed on the surfaces of the first and second clamping plates that are close to each other.

[0010] Preferably, a limiting frame is fixedly installed on the inner bottom of the storage box, and the current transformer is fitted inside the limiting frame.

[0011] Preferably, the rear outer surface of the current transformer is fixedly connected with wires.

[0012] Preferably, the electricity meter has a display panel on its front side.

[0013] Preferably, the energy meter has heat dissipation grooves on both sides that communicate with its interior.

[0014] Preferably, two sets of mounting blocks are fixedly installed on both the top and bottom of the electricity meter.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) This split-type current transformer meter metering device has a storage mechanism consisting of a cover, a limiting rod and a magnet. The storage box is fixedly installed on one side of the outer surface of the energy meter. When the current transformer is not in use, it is placed in the storage box. The cover is moved through the top of the storage box by the limiting rod and the magnet is magnetically attracted to the bottom of the inner side of the storage box to achieve locking and fixing. This makes the current transformer and the energy meter form an integrated storage structure, avoiding the problem of the current transformer being scattered and easily lost in the split design. The limiting frame fits and fixes the current transformer in the storage box, so that the current transformer does not shake during transportation and carrying. When taking it out, pull the cover upward to make the magnet disengage and open it. When storing, push the cover back and it will automatically attract and lock. The storage and retrieval operations are convenient.

[0016] (2) The split-type current transformer meter metering device is equipped with a connecting mechanism consisting of a first positioning ring, a second positioning ring, a positioning rod, a first spring and a pull handle. The first positioning ring is fixed on the first half shell, and the second positioning ring is fixed on the second half shell and coaxially arranged with the first positioning ring. The positioning rod is automatically inserted into the first positioning ring in the horizontal front-back direction under the push of the first spring, so that the first half shell and the second half shell are reliably locked when they are closed. After the current transformer is sleeved on the circuit under test, it will not loosen on its own due to vibration, ensuring the stable fit between the current transformer and the circuit under test. When it is necessary to open or close, it is only necessary to pull the pull handle to compress the positioning rod and exit the first positioning ring to unlock and open. After it is released, it will automatically reset and lock. The opening and closing operation does not require tools and the on-site installation efficiency is high.

[0017] (3) In this split-type current transformer meter metering device, the dustproof plate in the dustproof mechanism always maintains the tendency to cover the interface under the elastic force of the second spring. When not in use, the dustproof plate automatically adheres to the bottom interface of the energy meter to seal the interface, effectively preventing dust from entering the interface and causing poor contact. When wiring, the dial is moved to make the dustproof plate slide open to expose the interface. After the wire is connected, the wire pushes the dustproof plate to keep it open so as not to hinder normal use. After the wire is unplugged, the second spring pushes the slider to drive the dustproof plate to automatically reset and cover the interface again. The dustproof process does not require manual intervention. In the wire fixing mechanism, the first clamp is fixed to the bottom of the energy meter by the hanging rod. Pulling the second clamp backward compresses the third spring. After the wire is connected, it is released. The third spring rebounds and pulls the second clamp towards the first clamp to automatically clamp. The rubber pad increases the clamping friction, and the wire is firmly fixed and does not loosen, effectively preventing the wire from falling off the interface due to external force. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1This is a frontal perspective view of the present invention; Figure 2 This is a bottom-view perspective view of the present invention; Figure 3 This is a rear perspective view of the box lid and its components according to the present invention; Figure 4 This is a schematic diagram of the internal structure of the storage box of the present invention; Figure 5 This is a rear perspective view of the current transformer and its components according to the present invention. Figure 6 This is a schematic diagram of the wire fixing mechanism of the present invention; Figure 7 This is a bottom view of the present invention; Figure 8 This is a schematic diagram of the structure of the dust cover and its components according to the present invention.

[0019] Reference numerals: 1. Energy meter; 2. Storage box; 3. Current transformer; 4. Storage mechanism; 41. Box cover; 42. Limiting rod; 43. Magnet; 44. Anti-slip texture; 45. Observation window; 5. Connecting mechanism; 51. First positioning ring; 52. Second positioning ring; 53. Positioning rod; 54. First spring; 55. Pull handle; 6. Dustproof mechanism; 61. Dustproof plate; 62. Slide groove; 63. Sliding block; 64. Second spring; 65. Toggle plate; 7. Wire fixing mechanism; 71. Hanging rod; 72. First clamping plate; 73. Second clamping plate; 74. Through rod; 75. End piece; 76. Third spring; 77. Rubber pad; 8. First half shell; 9. Second half shell; 10. Limiting frame; 11. Wire; 12. Display panel; 13. Heat dissipation groove; 14. Mounting block. Detailed Implementation

[0020] Please see Figure 1-8This invention provides a technical solution: a split-type current transformer metering device, comprising an energy meter 1, a storage box 2, a current transformer 3, a storage mechanism 4, a connecting mechanism 5, a dustproof mechanism 6, and a wiring mechanism 7. The energy meter 1 has a rectangular casing, with a display panel 12 on its front side for displaying metering data such as electricity consumption, voltage, and current, facilitating direct reading by operators during inspections. Both sides of the energy meter 1 have heat dissipation slots 13 communicating with its interior. These slots are arranged longitudinally along the height of the sidewalls of the energy meter 1, utilizing natural air convection to dissipate heat generated by the internal metering chip and power module during operation, preventing excessive internal temperature from affecting metering accuracy and service life. Two sets of mounting blocks 14 are fixedly installed on the top and bottom of the energy meter 1, each set having bolt holes for securely mounting the energy meter 1 to the distribution cabinet panel or instrument box using bolts, ensuring a firm and reliable installation. A storage box 2 is fixedly mounted on one outer surface of the electricity meter 1 by bolts or welding. The storage box 2 is a rectangular box with internal storage space. A current transformer 3 is placed inside the storage box 2. A limiting frame 10 is fixedly mounted on the inner bottom of the storage box 2. The outline of the limiting frame 10 matches the outer outline of the current transformer 3, allowing the current transformer 3 to fit snugly within the limiting frame 10. The limiting frame 10 constrains the current transformer 3 into a fixed position, preventing it from shaking or colliding and being damaged during transportation and carrying. A wire 11 is fixedly connected to the rear outer surface of the current transformer 3 for connecting to an interface at the bottom of the electricity meter 1 to transmit the induced current signal. The bottom of the electricity meter 1 has at least two sets of interfaces for external wiring, arranged in a straight line.

[0021] A storage mechanism 4 is located on the front side of the storage box 2 to enclose and store the current transformer 3 inside the storage box 2, preventing the current transformer 3 from falling out and being lost when not in use. The storage mechanism 4 includes a lid 41, limiting rods 42, and a magnet 43. The lid 41 is fitted and covered on the front side of the storage box 2. The top of the lid 41 is higher than the top of the storage box 2, forming a protruding grip area for easy lifting or pushing by hand during operation. Two sets of limiting rods 42 are fixedly installed on the rear outer surface of the lid 41. The two sets of limiting rods 42 are symmetrically arranged and extend through the top through hole of the storage box 2 into the interior of the storage box 2. The limiting rods 42 can move freely up and down in the top through hole of the storage box 2. When the lid 41 is lifted upward, the limiting rods 42 move upward; when the lid 41 is pushed downward, the limiting rods 42 move downward. Each of the two sets of limiting rods 42 has a set of magnets 43 fixedly installed at its bottom. Both sets of magnets 43 are magnetically attracted to the bottom inside of the storage box 2. The magnetic attraction between the magnets 43 and the metal bottom of the storage box 2 locks the lid 41 to the front of the storage box 2, effectively preventing the lid 41 from opening by itself due to transportation vibration or accidental contact. When the current transformer 3 is needed, pull the lid 41 upward to move the limiting rods 42 and the magnets 43 upward, disengaging them from the bottom inside of the storage box 2 and releasing the attraction. Then, the lid 41 can be moved upward to open and the current transformer 3 can be taken out. After use, the current transformer 3 is placed back into the storage box 2, and the lid 41 is pushed downward to re-attract the magnets 43 to the bottom inside the storage box 2 to lock it in place. The operation is convenient. The outer surface of the front side of the lid 41 is engraved with anti-slip texture 44 to increase the friction when the fingers push the lid 41 and prevent slipping. The lid 41 has a through-hole for installation, and an observation window 45 is installed in the installation hole. The observation window 45 is made of transparent acrylic or glass, so that the operator can check the storage status and whether the current transformer 3 in the storage box 2 is missing without opening the lid 41.

[0022] A connecting mechanism 5 is mounted on the current transformer 3 to control the opening and closing of the current transformer 3 for quick connection to the power line under test. The current transformer 3 consists of a first half-shell 8 and a second half-shell 9. The first half-shell 8 is hinged to the top of the second half-shell 9. The first half-shell 8 can be flipped upwards to open or downwards to close around the hinge axis. After closing, the inner arc surfaces of the two half-shells form a complete annular magnetic circuit. The connecting mechanism 5 includes a first positioning ring 51, a second positioning ring 52, a positioning rod 53, a first spring 54, and a pull handle 55. The first positioning ring 51 is fixedly mounted on the first half-shell 8, and the second positioning ring 52 is fixedly mounted on the second half-shell 9. The first positioning ring 51 and the second positioning ring 52 are coaxially arranged, and their center holes are aligned to ensure that the positioning rod 53 can pass through smoothly. The positioning rod 53 is movably passed through the second positioning ring 52, and the positioning rod 53 can move within the second positioning ring 52 in the horizontal front-back direction. One end of the positioning rod 53 is inserted into the first positioning ring 51, locking the first half-shell 8 and the second half-shell 9 tightly closed. At this time, the first half-shell 8 cannot be flipped upwards to open, ensuring that the current transformer 3 will not loosen due to vibration after being sleeved on the measured line. The magnetic circuit of the iron core is closed stably, and the measurement accuracy is reliable. The other end of the positioning rod 53 is fixedly installed with a handle 55 for pulling backwards by hand during operation. A first spring 54 is sleeved on the positioning rod 53. One end of the first spring 54 is fixedly connected to the handle 55, and the other end of the first spring 54 is fixedly connected to the second positioning ring 52. When the first half-shell 8 and the second half-shell 9 are closed, the elastic force of the first spring 54 automatically pushes the positioning rod 53 forward into the first positioning ring 51 to complete the locking. The operator can achieve automatic locking without additional action. When it is necessary to open, pull the handle 55 backwards to compress the first spring 54 and pull the positioning rod 53 backwards out of the first positioning ring 51 to unlock. Then, the first half-shell 8 can be flipped upwards to open. The entire opening and closing process does not require any tools, resulting in high installation efficiency.

[0023] A dustproof mechanism 6 is located at the bottom of the electricity meter 1 to prevent external dust from entering the interface and causing poor contact when not in use. The dustproof mechanism 6 includes a dustproof plate 61, a sliding groove 62, a slider 63, a second spring 64, and a lever 65. The dustproof plate 61, a rectangular thin plate, is fitted to the interface at the bottom of the electricity meter 1, covering the entire interface area. Two sets of sliding grooves 62 are formed at the bottom of the electricity meter 1, extending horizontally to guide the sliding of the dustproof plate 61. Two sets of sliders 63 are fixedly installed on the top of the dustproof plate 61, sliding within their respective grooves 62. The dustproof plate 61 can slide horizontally along the grooves 62 via the sliders 63, exposing the interface for wiring when open and closing the interface to prevent dust accumulation when closed. A second spring 64 is fixedly installed between each of the two sets of sliders 63 and the inner wall of the corresponding groove 62. The second spring 64 always applies a pushing force to the sliders 63, causing the dustproof plate 61 to tend to move towards covering the interface. A lever 65 is fixedly installed at the bottom of the dustproof plate 61. The lever 65 protrudes downwards to facilitate finger flicking during operation. When not in use, the second spring 64 pushes the sliders 63, causing the dustproof plate 61 to automatically fit and cover the interface, preventing dust from entering the interface. When wiring is required, the finger flicks the lever 65, causing the dustproof plate 61 to move the sliders 63, compressing the second spring 64 and sliding along the groove 62 to expose the interface. After the wire 11 is connected to the interface, the lever 65 is released. The wire 11 is inserted into the interface, holding the dustproof plate 61 in place and keeping it open, without hindering normal wiring. When the wire 11 is pulled out of the interface, the second spring 64 pushes the sliders 63 back to their original position, and the dustproof plate 61 automatically covers the interface again, restoring its dustproof function. The entire dustproof process requires no manual intervention.

[0024] The wire securing mechanism 7 is located directly below the electricity meter 1 and is used to clamp and fix the connected wires to prevent them from loosening and falling off due to external force. The wire securing mechanism 7 includes a suspension rod 71, a first clamping plate 72, a second clamping plate 73, a through rod 74, an end piece 75, a third spring 76, and a rubber pad 77. The first clamping plate 72 is located directly below the electricity meter 1. Two sets of suspension rods 71 ​​are fixedly installed on the front outer surface of the first clamping plate 72. The tops of the two sets of suspension rods 71 ​​are fixedly connected to the front outer surface of the electricity meter 1. The suspension rods 71 ​​fix the first clamping plate 72 below the electricity meter 1, and the first clamping plate 72 remains fixed relative to the electricity meter 1. The second clamping plate 73 is located on the rear side of the first clamping plate 72. The second clamping plate 73 can move back and forth relative to the first clamping plate 72, and the distance between the two clamping plates is the wire clamping space. Two sets of through rods 74 are fixedly installed on the front outer surface of the second clamping plate 73. One end of each through rod 74 extends through the first clamping plate 72 to the front of the first clamping plate 72 and is fixedly fitted with an end piece 75. The through rods 74 can slide freely back and forth in the through holes of the first clamping plate 72, providing guidance for the opening and rebound of the second clamping plate 73. A set of third springs 76 is sleeved on each of the two sets of through rods 74. One end of each set of third springs 76 is fixedly connected to the corresponding end piece 75, and the other end of each set of third springs 76 is fixedly connected to the front outer surface of the first clamping plate 72. The third springs 76 always apply a backward elastic tension to the end piece 75, pulling the second clamping plate 73 towards the first clamping plate 72 through the through rods 74, forming a continuous elastic clamping force. A set of rubber pads 77 are fixedly installed on the surfaces of the first clamping plate 72 and the second clamping plate 73 that are close to each other. The surface of the rubber pads 77 has anti-slip texture, which increases the friction between the clamping surface and the outer sheath of the wire, making the clamping more stable. At the same time, the elasticity of the rubber can adaptively compensate for the clamping gap of wires with different diameters. During the wiring operation, the second clamping plate 73 is pulled backward, and the through rod 74 slides backward with the second clamping plate 73, which compresses the end piece 75 and stores the force of the third spring 76. After the wire is placed between the first clamping plate 72 and the second clamping plate 73, it is released. The third spring 76 rebounds and pulls the second clamping plate 73 forward through the end piece 75 and the through rod 74 to automatically clamp the wire. The rubber pads 77 firmly clamp and fix the wire, effectively preventing the wire from loosening and falling off the interface due to external force, and ensuring stable and reliable signal transmission.

[0025] Working principle: When the current transformer 3 is needed, pull the cover 41 upward to move the limit rod 42 and the magnet 43 upward to disengage from the bottom of the storage box 2 and release the adsorption. Open the cover 41 and take out the current transformer 3 from the storage box 2. Pull the handle 55 backward to compress the first spring 54 with the positioning rod 53 and pull the first positioning ring 51 backward. Flip the first half-shell 8 open, put the current transformer 3 on the circuit to be tested, and close the first half-shell 8. Release the handle 55 to make the first spring 54 push the positioning rod 53 forward to automatically insert into the first positioning ring 51 to complete the locking and closing. Move the dial 65 to make the dustproof plate 61 drive the slider 63 to compress the second spring 64 and slide along the slide groove 62 to expose the interface at the bottom of the energy meter 1. Connect the wire 11 to the interface and release the dial 65. 1. Insert the wire 11 into the interface and hold the dustproof plate 61 in place to keep it open; pull the second clamp 73 backward so that the through rod 74 slides with the second clamp 73, and the end piece 75 compresses the third spring 76 to store force. Place the wire between the first clamp 72 and the second clamp 73 and then release it. The third spring 76 rebounds and pulls the second clamp 73 towards the first clamp 72 through the end piece 75 and the through rod 74. The rubber pad 77 firmly clamps and fixes the wire; after use, pull the wire 11 out of the interface. The second spring 64 pushes the slider 63 to reset so that the dustproof plate 61 automatically covers the interface again. Take the current transformer 3 back and place it in the limiting frame 10 in the storage box 2. Push the box cover 41 down so that the limiting rod 42 drives the magnet 43 to re-attach to the bottom of the inner side of the storage box 2 to complete the locking and storage.

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A split-type current transformer metering device, characterized in that, include: An electricity meter (1) has a storage box (2) fixedly installed on one side of its outer surface. A current transformer (3) is placed inside the storage box (2). At least two sets of interfaces are opened at the bottom of the electricity meter (1). A connecting mechanism (5) is provided on the current transformer (3) and is used to control the opening and closing of the current transformer (3); Dustproof mechanism (6), which is located at the bottom of the electricity meter (1), is used to prevent dust from entering the interface; The wire fixing mechanism (7) is located directly below the electricity meter (1). The wire fixing mechanism (7) is used to fix the wiring to prevent it from being pulled loose. The storage mechanism (4) is located on the front side of the storage box (2). The storage mechanism (4) includes a lid (41), a limiting rod (42), and a magnet (43). The lid (41) is attached to and covers the front side of the storage box (2). The top of the lid (41) is higher than the top of the storage box (2). Two sets of limiting rods (42) are fixedly installed on the rear outer surface of the lid (41). Both sets of limiting rods (42) extend through the top of the storage box (2) and into the interior of the storage box (2). A set of magnets (43) is fixedly installed at one end of each set of limiting rods (42). Both sets of magnets (43) are magnetically attracted to the bottom of the inner side of the storage box (2).

2. The split-type current transformer metering device according to claim 1, characterized in that: The storage mechanism (4) also includes anti-slip texture (44) and observation window (45). The front outer surface of the lid (41) is engraved with anti-slip texture (44). The lid (41) has a through-hole for installation, and the observation window (45) is installed in the through-hole.

3. The split-type current transformer metering device according to claim 2, characterized in that: The connecting mechanism (5) includes a first positioning ring (51), a second positioning ring (52), a positioning rod (53), a first spring (54), and a handle (55). The current transformer (3) is composed of a first half-shell (8) and a second half-shell (9). The first half-shell (8) is hinged to the top of the second half-shell (9). The first positioning ring (51) is fixedly installed on the first half-shell (8), and the second positioning ring (52) is fixedly installed on the second half-shell (9). The first positioning ring (51) and the second positioning ring (52) are coaxially arranged. The positioning rod (53) is movably passed through the second positioning ring (52). One end of the positioning rod (53) is inserted into the first positioning ring (51), and the other end of the positioning rod (53) is fixedly installed with a handle (55). The first spring (54) is sleeved on the positioning rod (53). One end of the first spring (54) is fixedly connected to the handle (55), and the other end of the first spring (54) is fixedly connected to the second positioning ring (52).

4. A split-type current transformer metering device according to claim 3, characterized in that: The dustproof mechanism (6) includes a dustproof plate (61), a slide groove (62), a slider (63), a second spring (64), and a lever (65). The bottom of the electricity meter (1) is fitted with a dustproof plate (61) at the interface. The bottom of the electricity meter (1) has two sets of slide grooves (62). The top of the dustproof plate (61) is fixedly installed with two sets of sliders (63). Both sets of sliders (63) are slidably installed in the corresponding slide grooves (62). A set of second springs (64) is fixedly installed between the two sets of sliders (63) and the inner wall of the corresponding slide grooves (62). The bottom of the dustproof plate (61) is fixedly installed with a lever (65).

5. A split-type current transformer metering device according to claim 4, characterized in that: The wire fixing mechanism (7) includes a suspension rod (71), a first clamping plate (72), a second clamping plate (73), a through rod (74), an end piece (75), a third spring (76), and a rubber pad (77). The first clamping plate (72) is located directly below the electricity meter (1). Two sets of suspension rods (71) are fixedly installed on the front outer surface of the first clamping plate (72). One end of each set of suspension rods (71) is fixedly connected to the front outer surface of the electricity meter (1). The second clamping plate (73) is located on the rear side of the first clamping plate (72). Two sets of suspension rods (71) are fixedly installed on the front outer surface of the second clamping plate (73). Two sets of through rods (74) are connected to each other. One end of each set of through rods (74) extends through the first clamping plate (72) to the front side of the first clamping plate (72) and is fixedly installed with a set of end pieces (75). A set of third springs (76) is sleeved on each set of through rods (74). One end of each set of third springs (76) is fixedly connected to the corresponding end piece (75). The other end of each set of third springs (76) is fixedly connected to the front outer surface of the first clamping plate (72). A set of rubber pads (77) is fixedly installed on the side of the first clamping plate (72) and the second clamping plate (73) that are close to each other.

6. A split-type current transformer metering device according to claim 5, characterized in that: A limiting frame (10) is fixedly installed on the inner bottom of the storage box (2), and the current transformer (3) is fitted inside the limiting frame (10).

7. A split-type current transformer metering device according to claim 6, characterized in that: The rear outer surface of the current transformer (3) is fixedly connected with a wire (11).

8. A split-type current transformer metering device according to claim 7, characterized in that: The electricity meter (1) has a display panel (12) on its front side.

9. A split-type current transformer metering device according to claim 8, characterized in that: The electricity meter (1) has heat dissipation slots (13) on both sides that communicate with its interior.

10. A split-type current transformer metering device according to claim 9, characterized in that: Two sets of mounting blocks (14) are fixedly installed on the top and bottom of the electricity meter (1).

Images