Protective structure of mutual inductor

Abstract

The protection structure comprises a base, an iron core is arranged in the base, a winding is arranged on the iron core, the winding penetrates through the base and is upwards provided with an insulating porcelain bushing, the two ends of the upper portion of the base are fixedly connected with installation bases, limiting blocks are correspondingly installed in the installation bases, and the limiting blocks are fixedly connected with the base. A limiting block is arranged above the base, a protective shell is fixedly connected to the inner end of the limiting block, a limiting groove is formed in the mounting base, the limiting block corresponds to the limiting groove, and the mounting base and the limiting groove are arranged above the base and can correspond to the limiting block and the positioning block at the two ends of the protective shell; therefore, the protective shell can be rapidly installed at the outer end of the insulating porcelain sleeve, the insulating porcelain sleeve is prevented from being damaged in the transportation process, and the problems that the insulating porcelain sleeve is prone to colliding with other objects in the transportation process, the insulating porcelain sleeve is broken or cracked, and the insulating porcelain sleeve cannot be protected due to the fact that the top of an existing mutual inductor is provided with the insulating porcelain sleeve are solved. The device has the advantage of good protection effect.

Description

Technical Field

[0001] The utility model relates to the field of mutual inductors, in particular to a protective structure of a mutual inductor. Background Art

[0002] The instrument transformer, also known as the instrument transformer, is a general term for current transformers and voltage transformers. It can convert high voltage into low voltage and high current into low current for measuring or protecting systems. Its main function is to convert high voltage or high current into standard low voltage (100V) or standard low current (both refer to the rated value) (5A or 1A, both refer to the rated value) in proportion to achieve standardization and miniaturization of measuring instruments, protective equipment and automatic control equipment. In addition, the instrument transformer can be separated from the high voltage system to ensure the safety of the human body and equipment;

[0003] The existing mutual inductor has an insulating porcelain sleeve on the top, which is easy to collide with other objects during transportation, causing the insulating porcelain sleeve to break or crack, and the insulating porcelain sleeve cannot be protected. Utility Model Content

[0004] The utility model aims to provide a protective structure for a mutual inductor, which solves the problem in the prior art that the insulating porcelain sleeve at the top of the mutual inductor is easily collided with other objects during transportation, resulting in the insulating porcelain sleeve being broken or cracked.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme: a protective structure of a mutual inductor, comprising a base, an iron core is arranged inside the base, a winding is arranged on the iron core, the winding passes through the base and an insulating porcelain sleeve is arranged upward, the upper two ends of the base are fixedly connected with a mounting seat, and a limit block is correspondingly installed inside the mounting seat;

[0006] The inner end of the limit block is fixedly connected with a protective shell, and a limit slot is provided inside the mounting seat, and the limit block and the limit slot correspond to each other.

[0007] As a further description of the above technical solution: a first slot is provided inside the limit block, and two compression springs are fixedly connected to the inner side of the first slot.

[0008] As a further description of the above technical solution: the other end of the compression spring is fixedly connected to a first limit plate, and the other end of the first limit plate is fixedly connected to a positioning block.

[0009] As a further description of the above technical solution: positioning grooves are formed through both ends of the mounting seat, and the positioning blocks correspond to the positioning grooves.

[0010] As a further description of the above technical solution: a plurality of fixed blocks are fixedly connected to the four outer ends of the protective shell, the other end of the fixed block is movably connected to a movable rod, and the other end of the movable rod is fixedly connected to a protective plate.

[0011] As a further description of the above technical solution: a second slot is opened inside the fixed block, one end of the inner side of the second slot is fixedly connected to a damping spring, the other end of the damping spring is fixedly connected to a second limit plate, and the movable rod passes through the second slot and is fixedly connected to the second limit plate.

[0012] As a further description of the above technical solution: two ends of the outer side of the base are fixedly connected with mounting plates, and positioning bolts are threadedly connected between the mounting plate and the protective shell.

[0013] The utility model has the following beneficial effects:

[0014] 1. Compared with the prior art, the protective structure of the mutual inductor can correspond to the limit blocks and positioning blocks at both ends of the protective shell by arranging a mounting seat and a limit groove on the top of the base, so that the protective shell can be quickly installed on the outer end of the insulating porcelain sleeve to avoid damage to the insulating porcelain sleeve during transportation. The problem that the insulating porcelain sleeve is broken or cracked due to easy collision with other objects during transportation of the existing mutual inductor is solved, and the protective structure has the advantage of good protective effect;

[0015] 2. Compared with the prior art, the protective structure of the transformer can improve the protective effect of the transformer by arranging a shock-absorbing and buffering protection component on the outside of the protective shell, and the entire protective structure is easy to disassemble and install, which can improve its practicality and convenience.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the mounting seat structure of the utility model.

[0020] Figure 3 It is a schematic diagram of the internal structure of the limit block of the utility model.

[0021] Figure 4 It is a schematic diagram of the structure of the shock absorbing and buffering component of the utility model.

[0022] Figure 5 It is a cross-sectional view of the utility model.

[0023] Legend:

[0024] 1. Protective shell; 2. Protective plate; 3. Mounting seat; 4. Base; 5. Mounting plate; 6. Positioning bolt; 7. Movable rod; 8. Fixed block; 9. Limit block; 10. Positioning block; 11. Positioning slot; 12. Limit slot; 13. First limit plate; 14. Compression spring; 15. First slot; 16. Second limit plate; 17. Second slot; 18. Damping spring; 19. Insulating porcelain sleeve; 20. Winding; 21. Iron core. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0026] Reference Figure 1-5 The utility model provides an embodiment of a transformer protection structure, including a base 4, an iron core 21 is arranged inside the base 4, a winding 20 is arranged on the iron core 21, the winding 20 passes through the base 4 and an insulating porcelain sleeve 19 is arranged upward, the upper ends of the base 4 are fixedly connected with a mounting seat 3, and a limiting block 9 is correspondingly installed inside the mounting seat 3. The quick correspondence between the limiting block 9 and the limiting groove 12 can facilitate the staff to quickly install the protective shell 1;

[0027] The inner end of the limit block 9 is fixedly connected with the protective shell 1, and a limit groove 12 is provided inside the mounting seat 3. The limit block 9 and the limit groove 12 correspond to each other. A first slot 15 is provided inside the limit block 9, and two compression springs 14 are fixedly connected to the inner side of the first slot 15. The other end of the compression spring 14 is fixedly connected with a first limit plate 13, and the other end of the first limit plate 13 is fixedly connected with a positioning block 10. Positioning grooves 11 are provided through both ends of the mounting seat 3, and the positioning blocks 10 correspond to the positioning grooves 11. The limit blocks 9 at both ends of the protective shell 1 are matched with the limit grooves 12 inside the mounting seat 3, and then the positioning blocks 10 at both ends of the limit block 9 are pressed inward to shrink them inward. Then, the limit block 9 is installed inside the limit groove 12, and after the positioning block 10 passes through the position of the positioning groove 11, it can be ejected outward under the action of the internal compression spring 14, so that the protective shell 1 can be quickly installed to ensure the protection of the mutual inductor. At the same time, the positioning bolt 6 can be tightened to improve its stability. The entire protective shell 1 is easy to disassemble to avoid damage to the insulating porcelain sleeve 19 during transportation. The problem that the insulating porcelain sleeve 19 is easily broken or cracked due to collision with other objects during transportation and the insulating porcelain sleeve 19 cannot be protected is solved, and the protective effect is good.

[0028] The four ends of the outer side of the protective shell 1 are fixedly connected with a plurality of fixed blocks 8, the other end of the fixed block 8 is movably connected with a movable rod 7, the other end of the movable rod 7 is fixedly connected with a protective plate 2, a second slot 17 is provided inside the fixed block 8, one end of the inner side of the second slot 17 is fixedly connected with a damping spring 18, the other end of the damping spring 18 is fixedly connected with a second limit plate 16, the movable rod 7 passes through the second slot 17 and is fixedly connected with the second limit plate 16, when the protective shell 1 is collided, the protective plate 2 is subjected to the collision force, the protective plate 2 drives the movable rod 7 and the second limit plate 16 to squeeze the damping spring 18, under the action of the damping tana yellow 18, its buffering and shock absorbing function can be realized, thereby improving the protection ability of the entire protective assembly to the internal mutual inductor, and the damping tana yellow 18 used in the present device is composed of a damper and a spring, and can have its buffering and shock absorbing function;

[0029] The two ends of the outer side of the base 4 are fixedly connected with mounting plates 5, and positioning bolts 6 are threadedly connected to the mounting plate 5 and the protective shell 1. Screw holes are also provided at the outer ends of the protective shell 1 to cooperate with the positioning bolts 6, so that the protective shell 1 can be locked, thereby improving the stability and protection capability of the protective shell 1 when in use.

[0030] Working principle: When the device is in use, firstly, the limit blocks 9 at both ends of the protective shell 1 are matched with the limit grooves 12 inside the mounting seat 3, and then the positioning blocks 10 at both ends of the limit blocks 9 are pressed inward to make them retract inward, and then the limit blocks 9 are installed inside the limit grooves 12. After the positioning blocks 10 pass through the position of the positioning grooves 11, they can pop outward under the action of the internal compression springs 14, so that the protective shell 1 can be quickly installed to ensure the protection of the mutual inductor. At the same time, tightening the positioning bolts 6 can lock it to improve its stability. When the protective shell 1 is collided, the protective plate 2 is subjected to the collision force, and the protective plate 2 drives the movable rod 7 and the second limit plate 16 to squeeze the damping spring 18. Under the action of the damping spring 18, its buffering and shock absorbing function can be realized, thereby improving the protection ability of the entire protective assembly to the internal mutual inductor.

[0031] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A protective structure for a mutual inductor, comprising a base (4), characterized in that: An iron core (21) is arranged inside the base (4), a winding (20) is arranged on the iron core (21), the winding (20) passes through the base (4) and an insulating porcelain sleeve (19) is arranged upwardly, the upper ends of the base (4) are fixedly connected to a mounting seat (3), and a limit block (9) is correspondingly installed inside the mounting seat (3); The inner end of the limit block (9) is fixedly connected to a protective shell (1), a limit slot (12) is provided inside the mounting seat (3), and the limit block (9) and the limit slot (12) correspond to each other.

2. A protective structure for a mutual inductor according to claim 1, characterized in that: A first slot (15) is provided inside the limit block (9), and two compression springs (14) are fixedly connected to the inner side of the first slot (15).

3. The protection structure of a mutual inductor according to claim 2, characterized in that: The other end of the compression spring (14) is fixedly connected to a first limit plate (13), and the other end of the first limit plate (13) is fixedly connected to a positioning block (10).

4. The protection structure of a mutual inductor according to claim 3, characterized in that: Positioning grooves (11) are formed through both ends of the mounting seat (3), and the positioning blocks (10) correspond to the positioning grooves (11).

5. The protection structure of a mutual inductor according to claim 1, characterized in that: The four outer ends of the protective shell (1) are fixedly connected to a plurality of fixed blocks (8), the other end of the fixed block (8) is movably connected to a movable rod (7), and the other end of the movable rod (7) is fixedly connected to a protective plate (2).

6. The protection structure of a mutual inductor according to claim 5, characterized in that: A second slot (17) is provided inside the fixed block (8); a damping spring (18) is fixedly connected to one end of the inner side of the second slot (17); the other end of the damping spring (18) is fixedly connected to a second limit plate (16); and the movable rod (7) passes through the second slot (17) and is fixedly connected to the second limit plate (16).

7. The protection structure of a mutual inductor according to claim 1, characterized in that: The two ends of the outer side of the base (4) are fixedly connected with mounting plates (5), and the mounting plates (5) and the protective shell (1) are threadedly connected with positioning bolts (6).

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