A protective device for a transformer housing

Abstract

The utility model provides a mutual inductor shell protection device relates to mutual inductor shell protection technical field, including the protection cover main part, the bottom fixed connection of protection cover main part has the extension frame, the bottom fixed connection of extension frame has the clamping frame, the one side fixed connection of clamping frame has the support block, the one side of support block has set up first mobile slot, the inner wall movable joint of first mobile slot has the limit post, the one side of first mobile slot has the second mobile slot and has set up, this utility model, through setting up clamping frame, prolongs the height of protection cover main part, makes clamping frame can be clamped in the outer ring of mutual inductor surface disc, through setting up support block, it is convenient to set up limit post in its inside, makes limit post can be clamped in the bottom of disc, to be more convenient for the protection cover main part to separate installation auxiliary pole also can make the bottom of protection cover main part more stable, reduces the shake, through setting up first mobile slot, makes limit post move in its inside.

Description

Technical Field

[0001] This utility model relates to the field of transformer housing protection technology, and in particular to a transformer housing protection device. Background Technology

[0002] Instrument transformers are electrical devices that convert high current or high voltage on the primary side into low current or low voltage on the secondary side based on the principle of electromagnetic induction. They can be divided into current transformers (CTs) and voltage transformers (PTs). Their main functions are to isolate high-voltage circuits to ensure the safety of personnel and equipment; to transform electrical quantities into standardized values ​​for easy measurement and protection by instruments, relays, and other equipment; and to expand the measuring range of instruments. They are widely used in power systems, industrial control, and other fields. During operation, it is essential to ensure reliable grounding of the secondary side to avoid open circuits (current transformers) or short circuits (voltage transformers) to guarantee safe operation. Their accuracy class and rated capacity, etc., are important parameters. The selection of instrument transformer housings depends on actual needs. They are key components for achieving safety monitoring and control in power systems. Instrument transformer protective covers protect the connecting components on the top of the instrument transformer. However, existing instrument transformer housing protection devices have shortcomings in practical applications. On the one hand, the structural design of some protective devices is not reasonable enough, and the fixing is not stable enough. When subjected to external vibration or impact, they are prone to shaking or even falling off, failing to provide reliable protection for the instrument transformer and affecting its normal operation. On the other hand, the existing protective devices are cumbersome to install and remove, requiring manual pressing to clip them into the slots of the installation auxiliary rod, which is quite laborious. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies, such as insufficient fixation, and to provide a protective device for the housing of a current transformer.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a protective device for the housing of a current transformer, comprising a protective cover body, an extended frame fixedly connected to the bottom of the protective cover body, a locking frame fixedly connected to the bottom of the extended frame, a support block fixedly connected to one side of the locking frame, a first movable groove provided on one side of the support block, a limit post movably connected to the inner wall of the first movable groove, a second movable groove extending through one side of the first movable groove, a lead column slidably connected to the inner wall of the second movable groove, and support rods fixedly connected to both sides of the lead column.

[0005] In a preferred embodiment, a mounting cylinder is fixedly connected to one side of the protective cover body, a movable support plate is fixedly connected to one side of the mounting cylinder, a sliding handle is provided on the top of the movable support plate, a push rod is fixedly connected to the bottom of the sliding handle, a support groove is provided on one side of the movable support plate, and a sliding opening is provided on the top of the mounting cylinder.

[0006] In a preferred embodiment, the sliding handle is slidably connected to the inner wall of the sliding opening, and the push rod is slidably connected to the inner wall of the support groove.

[0007] In a preferred embodiment, the top of the support rod is slidably connected to the inner wall of the second moving groove.

[0008] In a preferred embodiment, the top of the limiting post is attached to the outer surface of the lead post.

[0009] In a preferred embodiment, the inner wall of the locking frame is provided with a slot, and the support block is fixedly connected to the inner wall of the slot.

[0010] In a preferred embodiment, the first movable groove is located on one side of the groove opening.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] This invention extends the height of the protective cover body by setting a locking frame, allowing the locking frame to lock onto the outer ring of the current transformer's surface disc. A support block facilitates the installation of a limiting post inside, allowing the limiting post to lock onto the bottom of the disc, thus making it easier to detach the protective cover body from the installation auxiliary rod and ensuring greater stability at the bottom of the protective cover body, reducing wobbling. A first moving groove allows the limiting post to move within it. A lead column allows the weight of the lead column to press the limiting post to one side, thus locking it onto the lower surface of the upper disc of the current transformer. The contact surface between the lead column and the limiting post is curved to reduce pressure resistance. A support rod restricts the lead column to move only in the same vertical position. Attached Figure Description

[0013] Figure 1 A schematic diagram of the structure of a transformer housing protection device provided by this utility model.

[0014] Figure 2 This is a bottom view of the structure of a transformer housing protection device provided by this utility model.

[0015] Figure 3 This utility model provides a protective device for the housing of a current transformer. Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0016] Figure 4 This is a cross-sectional view of the support block portion of a transformer housing protection device provided by this utility model.

[0017] Figure 5 A schematic diagram of the structure of a transformer housing protection device provided by this utility model.

[0018] Legend:

[0019] 1. Protective cover body; 2. Extended frame; 3. Locking frame; 4. Support block; 5. Mounting cylinder; 6. Movable support plate; 7. Sliding handle; 8. First moving groove; 9. Limiting post; 10. Second moving groove; 11. Lead column; 12. Support rod; 13. Push rod; 14. Support groove; 15. Sliding port. Detailed Implementation

[0020] 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.

[0021] Example 1

[0022] like Figures 1-5 As shown, this utility model provides a technical solution: a transformer housing protection device, including a protective cover body 1, an extended frame 2 fixedly connected to the bottom of the protective cover body 1, a locking frame 3 fixedly connected to the bottom of the extended frame 2, a slot opened in the inner wall of the locking frame 3, a support block 4 fixedly connected to the inner wall of the slot, a support block 4 fixedly connected to one side of the locking frame 3, a first moving groove 8 opened on one side of the support block 4, the first moving groove 8 being opened on the side where the slot is located, a limiting post 9 movably connected to the inner wall of the first moving groove 8, the top of the limiting post 9 abutting the outer surface of the lead post 11, a second moving groove 10 penetrating through one side of the first moving groove 8, a lead post 11 slidably connected to the inner wall of the second moving groove 10, support rods 12 fixedly connected to both sides of the lead post 11, the top of the support rods 12 and the second moving groove 10 being slidably connected to the inner wall of the second moving groove 10, and ... movably connected to both sides of the lead post 11, the top of the support rods 12 and the second moving groove 10 being slidably connected to the inner wall of the second moving groove 10, the second moving groove 10 being slidably connected to the inner wall of the second moving groove 10, the second moving groove 10 being slidably connected to the inner wall of the second moving groove 10, the second moving groove 10 being slidably connected to the inner wall of the second moving groove 10, the second moving groove 10 being slidably connected to the inner wall of

[0023] The inner wall of groove 10 is slidably connected.

[0024] In this embodiment, by setting a locking frame 3, the height of the protective cover body 1 is extended, allowing the locking frame 3 to be locked onto the outer ring of the current transformer surface disk. By setting a support block 4, it is convenient to set a limiting post 9 inside, so that the limiting post 9 can be locked onto the bottom of the disk, making it easier to detach the protective cover body 1 from the installation auxiliary rod, and also making the bottom of the protective cover body 1 more stable and reducing shaking. By setting a first moving groove 8, the limiting post 9 can move inside it. In addition, sliding slots are opened through both sides of the first moving groove 8, and sliders are fixedly connected to both sides of the limiting post 9. The sliders move by being locked in the sliding slots, so that the limiting post 9 always moves in the first moving groove 8. By setting a lead column 11, it is convenient to use the weight of the lead column 11 to squeeze the limiting post 9 to one side, thereby locking it onto the lower surface of the upper disk of the current transformer. The contact surface between the lead column 11 and the limiting post 9 is set as a curved surface to reduce the resistance of compression. By setting a support rod 12, it is used to restrict the lead column 11 to move only in the same vertical position.

[0025] Example 2

[0026] like Figure 4 As shown, a mounting cylinder 5 is fixedly connected to one side of the protective cover body 1, a movable support plate 6 is fixedly connected to one side of the mounting cylinder 5, a sliding handle 7 is provided on the top of the movable support plate 6, a push rod 13 is fixedly connected to the bottom of the sliding handle 7, a support groove 14 is provided on one side of the movable support plate 6, a sliding opening 15 is provided on the top of the mounting cylinder 5, the sliding handle 7 is slidably connected to the inner wall of the sliding opening 15, and the push rod 13 is slidably connected to the inner wall of the support groove 14.

[0027] In this embodiment, by setting a movable support plate 6, it is easy to open a support groove 14 inside it, so that the push rod 13 can slide on its inner wall, thereby opening the mounting cylinder 5 and the protective cover body 1 to both sides. This eliminates the need to press the mounting cylinders 5 on both sides to open them, reducing the use of manpower. The sliding of the push rod 13 is controlled by the sliding handle 7, which moves in the sliding port 15.

[0028] Working principle:

[0029] like Figures 1-5As shown, when the transformer housing protection device needs to be installed on the transformer, firstly, the sliding handle 7 is moved in the sliding port 15, and the push rod 13 is moved in the support groove 14 to create an appropriate distance between the mounting cylinder 5 and the protective cover body 1, so that the device can be aligned with the slot of the auxiliary mounting rod of the protective cover. Then, the locking frame 3 is aligned with the outer ring of the transformer surface disc for locking. At this time, the limiting post 9 inside the support block 4 will be pressed to one side by the gravity of the lead post 11 in the first moving groove 8, so as to automatically lock into the bottom of the disc. The lead post 11 reduces frictional resistance through its curved contact design, and the support rod 12 ensures that the lead post 11 moves only in the vertical direction, thereby ensuring that the limiting post 9 can accurately lock into the lower surface of the transformer disc. If it is necessary to disassemble or adjust the position, simply operate the sliding handle 7 again to make the push rod 13 move the mounting cylinder 5 and the protective cover body 1 a certain distance, and then the device can be easily removed.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A protective device for the housing of a current transformer, comprising a protective cover body (1), characterized in that: The bottom of the protective cover body (1) is fixedly connected to an extended frame (2), the bottom of the extended frame (2) is fixedly connected to a locking frame (3), a support block (4) is fixedly connected to one side of the locking frame (3), a first moving groove (8) is opened on one side of the support block (4), a limit post (9) is movably connected to the inner wall of the first moving groove (8), a second moving groove (10) is opened through one side of the first moving groove (8), a lead column (11) is slidably connected to the inner wall of the second moving groove (10), and a support rod (12) is fixedly connected to both sides of the lead column (11).

2. The transformer housing protection device according to claim 1, characterized in that: A mounting cylinder (5) is fixedly connected to one side of the protective cover body (1), a movable support plate (6) is fixedly connected to one side of the mounting cylinder (5), a sliding handle (7) is provided on the top of the movable support plate (6), a push rod (13) is fixedly connected to the bottom of the sliding handle (7), a support groove (14) is provided on one side of the movable support plate (6), and a sliding opening (15) is provided on the top of the mounting cylinder (5).

3. The transformer housing protection device according to claim 2, characterized in that: The sliding handle (7) is slidably connected to the inner wall of the sliding port (15), and the push rod (13) is slidably connected to the inner wall of the support groove (14).

4. The transformer housing protection device according to claim 1, characterized in that: The top of the support rod (12) is slidably connected to the inner wall of the second moving groove (10).

5. A transformer housing protection device according to claim 1, characterized in that: The top of the limiting post (9) is attached to the outer surface of the lead post (11).

6. The transformer housing protection device according to claim 1, characterized in that: The inner wall of the locking frame (3) is provided with a slot, and the support block (4) is fixedly connected to the inner wall of the slot.

7. A transformer housing protection device according to claim 1, characterized in that: The first movable groove (8) is located on one side of the groove opening.

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