Current transformer convenient for fixing bus

Abstract

The utility model relates to the technical field of current transformers, in particular to a current transformer convenient for fixing a bus, which comprises a transformer main body, a mounting plate is integrally arranged at the bottom of the transformer main body, a bus through hole is formed in the middle of the transformer main body, and an auxiliary shell is assembled on the inner side of the transformer main body. An auxiliary edge strip is integrally arranged on the front side of the auxiliary shell, a fine adjustment screw rod is in threaded connection with the interior of the center of the auxiliary edge strip, and an abutting seat is assembled at the inner end of the fine adjustment screw rod. According to the utility model, the bus can be fixed in an auxiliary manner as required during assembly and use, so that the assembly and use are more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to a current transformer that is convenient for fixing a busbar. Background Art

[0002] Current transformer is an important electrical equipment in the power system and is widely used. It is a sensor used by secondary equipment such as measuring instruments and relay protection in the power system to obtain current information of the primary circuit. Whether the current transformer works properly is of great significance to the safety of the power system and the normal operation of protection and measurement equipment. When assembling and using, the busbar needs to be inserted into the inner hole of the transformer;

[0003] In this regard, China's patent application number: CN202121183303.3 discloses a current transformer, including a first mutual inductor and a second mutual inductor. The first mutual inductance unit includes a first outer shell, a first inner shell, a first iron core and a first winding. The second mutual inductance unit includes a second outer shell, a second inner shell, a second iron core, a second winding and a spring. The spring is arranged in the second placement cavity, and is respectively abutted against the inner wall of the second accommodating cavity and the second iron core, and is used to keep the second iron core continuously pushed, so that after the two ends of the second iron core are self-adjusted, they are tightly aligned with the two ends of the first iron core;

[0004] However, it is inconvenient to fix the busbar as needed during assembly of the existing current transformer, which may cause shaking and affect the use;

[0005] Therefore, in order to solve the above problem, a current transformer which is convenient for fixing the busbar is proposed. Utility Model Content

[0006] The utility model aims to provide a current transformer for conveniently fixing the busbar, so as to solve the problem in the prior art that it is inconvenient to auxiliary fix the busbar as needed during assembly and use of the existing current transformer, which easily causes shaking and affects use.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a current transformer for conveniently fixing a busbar, comprising a transformer body, a mounting plate integrally arranged at the bottom of the transformer body, a busbar through-hole opened in the middle of the transformer body, an auxiliary shell assembled on the inner side of the transformer body, an auxiliary side strip integrally arranged on the front side of the auxiliary shell, a fine-tuning screw connected to the central internal thread of the auxiliary side strip, and a pressure seat assembled on the inner end of the fine-tuning screw.

[0008] Preferably, the inner end of the fine-tuning screw is sleeved with an assembly sleeve, the assembly sleeve is assembled on the back of the pressure seat, a locking ball is clamped inside the assembly sleeve, the locking ball is fixed to the inner end of the fine-tuning screw, and a locking groove corresponding to the locking ball is opened inside the assembly sleeve.

[0009] Preferably, a threaded sleeve on the surface of the fine-tuning screw is provided with a fastening nut, and two groups of the fastening nuts are respectively located on both sides of the auxiliary side strip.

[0010] Preferably, both sides of the back of the pressure seat are equipped with limiting sliding rods, and the limiting sliding rods are inserted through the auxiliary side strips, and the auxiliary side strips are provided with limiting sliding holes corresponding to the limiting sliding rods.

[0011] Preferably, an assembly groove corresponding to the transformer body is opened inside the auxiliary shell, a fastening belt is fixed to the back of the auxiliary shell, a hook is bolted to the front end of the fastening belt, a hanging ring corresponding to the hook is fixed to the front side of the auxiliary shell, and an auxiliary groove corresponding to the fastening belt is opened on the outer wall of the transformer body.

[0012] Preferably, a single busbar can be clamped inside the three groups of the pressing seats, anti-slip pads are glued to the inner walls of the pressing seats, side feet are integrally provided on both sides of the pressing seats, and side holes are opened inside the side feet.

[0013] Preferably, the side of the pressure seat is equipped with a clamping arm through bolts, the side of the clamping arm and the side of the side foot are provided with hidden grooves corresponding to the bolts, the clamping arm is arranged in an arc shape, and a double busbar can be assembled between the clamping arm and the pressure seat.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the utility model facilitates auxiliary fixing of the busbar as required during assembly and use, making assembly and use more convenient;

[0015] The utility model is provided with auxiliary side strips, a pressure seat and a fine-adjustment screw, which facilitates the fixation of the busbar inserted into the main body of the current transformer, thereby facilitating the auxiliary fixation of the busbar, making the subsequent use more stable and convenient, and not prone to shaking. Through this design, the convenience and practicality of the current transformer are improved.

[0016] The utility model is provided with an auxiliary shell, which facilitates the assembly of the inner wall of the transformer body, that is, the side of the busbar perforation, making subsequent operations more convenient and also convenient for subsequent disassembly and replacement. Through this design, the convenience and practicality of the current transformer are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a front cross-section of the structure of the utility model;

[0018] Figure 2 It is a side view schematic diagram of the local structure of the auxiliary shell of the utility model;

[0019] Figure 3 This is a schematic front view of the local structure when the utility model fixes a single busbar;

[0020] Figure 4 This is a schematic cross-sectional view of the local structure when the utility model fixes the double busbar;

[0021] Figure 5 For this utility model Figure 1 A schematic diagram of the structure enlargement in the middle;

[0022] In the figure: 100, transformer body; 101, single busbar; 102, double busbar; 110, mounting plate; 120, busbar perforation; 200, auxiliary shell; 201, assembly groove; 202, fastening belt; 203, hook; 204, hanging ring; 205, auxiliary groove; 210, auxiliary side strip; 220, pressure seat; 221, anti-slip pad; 222, side foot; 223, side hole; 224, bolt; 225, clamp arm; 226, hidden groove; 230, fine-tuning screw; 231, assembly set; 232, card ball; 233, card slot; 234, fastening nut; 240, limit slide rod; 241, limit slide hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-5 , an embodiment provided by the utility model:

[0025] A current transformer for conveniently fixing a busbar comprises a transformer body 100, a mounting plate 110 is integrally arranged at the bottom of the transformer body 100, a busbar through hole 120 is opened in the middle of the transformer body 100, an auxiliary shell 200 is assembled inside the transformer body 100, an auxiliary side bar 210 is integrally arranged at the front side of the auxiliary shell 200, a fine-tuning screw 230 is threadedly connected to the center of the auxiliary side bar 210, and a pressing seat 220 is assembled at the inner end of the fine-tuning screw 230;

[0026] Furthermore, an assembly sleeve 231 is sleeved on the inner end of the fine-tuning screw 230, and the assembly sleeve 231 is assembled on the back of the pressing seat 220. A clamping ball 232 is clamped inside the assembly sleeve 231, and the clamping ball 232 is fixed to the inner end of the fine-tuning screw 230. A clamping groove 233 corresponding to the clamping ball 232 is opened inside the assembly sleeve 231. Through this design, the auxiliary assembly and subsequent operation of the fine-tuning screw 230 and the pressing seat 220 are facilitated;

[0027] Furthermore, a threaded sleeve is provided on the surface of the fine-tuning screw 230 with a fastening nut 234, and two sets of fastening nuts 234 are respectively located on both sides of the auxiliary side strip 210. This design facilitates the limiting and fixing of the fine-tuning screw 230;

[0028] Furthermore, the two sides of the back of the pressing seat 220 are equipped with limit slide bars 240, which are inserted through the auxiliary side strip 210. The auxiliary side strip 210 is provided with limit slide holes 241 corresponding to the limit slide bars 240. This design facilitates the auxiliary fine-tuning sliding of the pressing seat 220.

[0029] Furthermore, an assembly groove 201 corresponding to the transformer body 100 is provided inside the auxiliary shell 200, a fastening belt 202 is fixed to the back of the auxiliary shell 200, a hook 203 is bolted to the front end of the fastening belt 202, a hanging ring 204 corresponding to the hook 203 is fixed to the front side of the auxiliary shell 200, and an auxiliary groove 205 corresponding to the fastening belt 202 is provided on the outer side wall of the transformer body 100. This design facilitates the assembly and fastening of the auxiliary card of the auxiliary shell 200, and facilitates subsequent operation and disassembly;

[0030] Furthermore, the three groups of pressing seats 220 can hold a single busbar 101 inside, and the inner wall of the pressing seat 220 is glued with an anti-slip pad 221, and the two sides of the pressing seat 220 are integrally provided with side feet 222, and the side feet 222 are provided with side holes 223. Through this design, it is convenient to synchronously assist in clamping and fixing the busbar;

[0031] Furthermore, a clamping arm 225 is assembled on the side of the pressure seat 220 through a bolt 224, and a hidden groove 226 corresponding to the bolt 224 is provided on the side of the clamping arm 225 and the side of the side foot 222. The clamping arm 225 is arranged in an arc shape, and a double busbar 102 can be assembled between the clamping arm 225 and the pressure seat 220. Through this design, it is convenient to fix and limit multiple busbars, making the operation more convenient.

[0032] Working principle: When assembling and using, the auxiliary shell 200 is clamped on the inner wall of the busbar perforation 120, and then with the cooperation of the fastening belt 202 and the hook 203, the auxiliary shell 200 is conveniently assembled on the side of the transformer body 100 by hooking the hanging ring 204. When the busbar passes through the busbar perforation 120, the fine-tuning screw 230 can be rotated according to the clamping needs. With the cooperation of the clamping ball 232 and the clamping groove 233, it is convenient to move the pressure seat 220, so that the three groups of pressure seats 220 are convenient for clamping and fixing the single busbar 101. Similarly, with the cooperation of the clamping arm 225, it is also convenient to cooperate with the corresponding pressure seat 220 to clamp the double busbar 102, and it is convenient to fix and clamp the relevant busbars according to the selection, making subsequent use more convenient. The operation ends here.

[0033] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A current transformer for conveniently fixing a busbar, comprising a transformer body (100), a mounting plate (110) being integrally provided at the bottom of the transformer body (100), and a busbar through hole (120) being provided in the middle of the transformer body (100), characterized in that: An auxiliary shell (200) is mounted inside the transformer body (100), an auxiliary side strip (210) is integrally arranged on the front side of the auxiliary shell (200), a fine-tuning screw (230) is threadedly connected to the center of the auxiliary side strip (210), and a pressing seat (220) is mounted on the inner end of the fine-tuning screw (230).

2. A current transformer for convenient busbar fixing according to claim 1, characterized in that: The inner end of the fine-tuning screw rod (230) is sleeved with an assembly sleeve (231), the assembly sleeve (231) is assembled on the back of the pressing seat (220), a locking ball (232) is clamped inside the assembly sleeve (231), the locking ball (232) is fixed to the inner end of the fine-tuning screw rod (230), and a clamping groove (233) corresponding to the locking ball (232) is opened inside the assembly sleeve (231).

3. A current transformer for convenient busbar fixing according to claim 1, characterized in that: A threaded sleeve is provided on the surface of the fine-tuning screw rod (230) with a fastening nut (234), and two groups of the fastening nuts (234) are respectively located on both sides of the auxiliary side strip (210).

4. A current transformer for convenient busbar fixing according to claim 1, characterized in that: The two sides of the back of the pressing seat (220) are equipped with limiting sliding rods (240), and the limiting sliding rods (240) are inserted through the auxiliary side strip (210). The auxiliary side strip (210) is provided with limiting sliding holes (241) corresponding to the limiting sliding rods (240).

5. A current transformer for convenient busbar fixing according to claim 1, characterized in that: An assembly groove (201) corresponding to the transformer body (100) is provided inside the auxiliary shell (200); a fastening belt (202) is fixed to the back of the auxiliary shell (200); a hook (203) is bolted to the front end of the fastening belt (202); a hanging ring (204) corresponding to the hook (203) is fixed to the front side of the auxiliary shell (200); and an auxiliary groove (205) corresponding to the fastening belt (202) is provided on the outer wall of the transformer body (100).

6. A current transformer for convenient busbar fixing according to claim 1, characterized in that: The three groups of pressing seats (220) can clamp a single busbar (101) therein, an anti-slip pad (221) is glued to the inner wall of the pressing seat (220), side feet (222) are integrally provided on both sides of the pressing seat (220), and side holes (223) are provided inside the side feet (222).

7. A current transformer for convenient busbar fixing according to claim 6, characterized in that: The side of the pressing seat (220) is assembled with a clamping arm (225) via a bolt (224); the side of the clamping arm (225) and the side of the leg (222) are provided with a hidden groove (226) corresponding to the bolt (224); the clamping arm (225) is arranged in an arc shape, and a double busbar (102) can be mounted between the clamping arm (225) and the pressing seat (220).

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