Protective cover for oil-immersed transformer

Abstract

The utility model provides an oil-immersed transformer protective cover, which relates to the technical field of transformer protective covers and comprises a transformer body, a protective cover body is arranged on one side of the transformer body, a connecting device is arranged between the transformer body and the protective cover body, and an adjusting device is arranged on one side of the protective cover body. The protective cover comprises a protective cover body and a connecting device, the protective cover body comprises a transformer body, the connecting device comprises a U-shaped plate, the U-shaped plate is fixedly connected with the transformer body, the surface of the U-shaped plate is symmetrically and fixedly connected with two rectangular cylinders, and the inner walls of the two rectangular cylinders are connected with the inner wall of the U-shaped plate. And the use flexibility of the protective cover body is improved, the situation that the protective cover body is tedious to install in the early stage by personnel is reduced, and the convenience and efficiency of maintaining the protective cover body by the personnel in the later stage are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer protective covers, in particular to an oil-immersed transformer protective cover. Background Art

[0002] An oil-immersed transformer uses mineral oil as the main insulating medium and cooling medium of the transformer. The main components of the transformer are immersed in an oil tank filled with mineral oil, and a box-type transformer with wiring terminals led out from the top of the oil tank cover. Compared with other types of transformers, the oil-immersed transformer has a relatively simple structure, relatively low cost, and low maintenance cost. Therefore, it is widely used and is an indispensable electrical equipment in the current power supply network system.

[0003] An oil-immersed transformer is composed of an oil tank, an oil tank cover, electrical components arranged inside the oil tank, radiators arranged outside the oil tank, and wiring terminals arranged on the upper part of the oil tank cover. The wiring cables are divided into two categories: high-voltage wiring terminals and low-voltage outgoing terminals. In order to prevent the outgoing cables and wiring terminals from being directly exposed outside, a protective cover is usually arranged on the upper part of the oil tank cover. However, since most of the existing protective covers are assembled with the machine body by multiple bolts or direct welding, it may cause that personnel cannot quickly fix and disassemble the protective cover during the initial installation and subsequent maintenance and repair, resulting in low installation and maintenance efficiency of the staff. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose an oil-immersed transformer protective cover.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: An oil-immersed transformer protective cover, including a transformer body, a protective cover body is arranged on one side of the transformer body, a connecting device is arranged between the transformer body and the protective cover body, an adjusting device is arranged on one side of the protective cover body, the connecting device includes a U-shaped plate, the U-shaped plate is fixedly connected with the transformer body, two rectangular cylinders are symmetrically and fixedly connected to the surface of the U-shaped plate, the inner walls of the two rectangular cylinders are connected to the inner wall of the U-shaped plate, round rods are slidably connected to the inner walls of the two rectangular cylinders, clamping blocks are fixedly connected to the adjacent ends of the two round rods, the clamping blocks are triangular, springs are fixedly connected to the ends of the two round rods far from the clamping blocks, the two springs are respectively sleeved on the surfaces of the two round rods, the other ends of the two springs are respectively fixedly connected with the two rectangular cylinders, a rectangular block is fixedly connected to one side of the protective cover body, two clamping grooves are symmetrically formed on the surface of the rectangular block, the surface of the rectangular block is slidably inserted into the inner wall of the U-shaped plate, and the size and shape of the surface of the clamping block are adapted to the size and shape of the inner wall of the clamping groove.

[0006] The effects achieved by the above components are as follows: By setting up the connecting device, first manually move the protective cover body, so that the protective cover body drives the rectangular block to move. When the rectangular block moves to the position where it is inserted into the U-shaped plate, the rectangular block squeezes the two clamping blocks to move away from the inside of the U-shaped plate. When the rectangular block moves to the position where it completely enters the U-shaped plate, the inner wall of the card slot coincides with the inner wall of the rectangular cylinder. Under the reaction force of the spring, the two springs drive the round rods to move towards the inside of the U-shaped plate, so that the two round rods drive the two clamping blocks to approach each other. When the two clamping blocks simultaneously move to the position where they are inserted into the two card slots, the rapid assembly of the protective cover body and the transformer body is completed, so that the protective cover body is fixed on the transformer body to protect the outgoing cable and the terminal block. At the same time, the protective cover body can be quickly disassembled in the later stage, reducing the cumbersome situation of personnel installing the protective cover body in the early stage and improving the convenience and efficiency of personnel maintaining the protective cover body in the later stage.

[0007] Preferably, one end of each of the two round rods is fixedly connected with a push rod, and one ends of the two push rods are close to each other.

[0008] The effects achieved by the above components are as follows: By setting up the push rods, personnel can drive the two round rods to move towards each other by manually pushing the two push rods, so that the two round rods can drive the two clamping blocks to quickly disengage from the inside of the card slots and release the limit on the rectangular block, improving the convenience of manually releasing the limit on the protective cover body.

[0009] Preferably, a plurality of rubber strips are fixedly connected to the adjacent sides of the two push rods, and the plurality of rubber strips are arranged at equal intervals.

[0010] The effects achieved by the above components are as follows: By setting up the rubber strips, the rubber strips can increase the friction between the push rods and the hands, reducing the situation of hand slipping when manually pushing the push rods.

[0011] Preferably, a limiting groove is opened on one side of the rectangular block, a limiting block is fixedly connected to the inner wall of the U-shaped plate, and the surface of the limiting block is slidably inserted into the inner wall of the limiting groove.

[0012] The effects achieved by the above components are as follows: By setting up the limiting block and the limiting groove, the limiting block can be inserted into the inside of the limiting groove to assist in limiting the rectangular block, reducing the situation of the rectangular block shaking left and right after being inserted into the U-shaped plate.

[0013] Preferably, two inclined angles are symmetrically opened on the surface of the rectangular block, and the angles of the inclined angles are adapted to the surfaces of the clamping blocks.

[0014] The effects achieved by the above components are as follows: By setting up the inclined angles, the rectangular block can squeeze the surface of the clamping block more smoothly after being inserted into the U-shaped plate, reducing the situation of jamming when the rectangular block squeezes the surface of the clamping block.

[0015] Preferably, the adjusting device includes a groove opened on one side of the protective cover body, the inner wall of the groove is slidably connected with a protective shell, one side of the protective shell is opened with a plurality of threading holes, one side of the protective cover body is opened with a rectangular hole, one side of the protective shell is fixedly connected with a screw rod, the screw rod is arranged inside the rectangular hole, the surface of the screw rod is threadedly connected with a screw hole ring, and the surface of the screw hole ring is larger than the inner wall of the rectangular hole.

[0016] The effect achieved by the above components is: by setting the adjustment device, first manually move the protective shell so that the protective shell moves up and down along the inside of the groove, so that the protective shell drives the screw to move up and down along the inside of the rectangular hole, and when the protective shell moves to the appropriate position, manually rotate the screw hole ring so that the screw hole ring moves left and right along the surface of the screw, and when the screw hole ring moves to the position of extruding the surface of the protective cover body, the protective shell is fixed at the specified position, thereby completing the spatial adjustment of the protective cover body, reducing the situation in which the outgoing cables and terminal blocks on the transformer body are higher than the internal space of the protective cover body during the use of the protective cover body, affecting the normal use and installation of the protective cover body, and improving the flexibility of the use of the protective cover body.

[0017] Preferably, an operating ring is fixedly connected to one side of the screw hole ring, the operating ring is sleeved on the surface of the screw, and a plurality of anti-slip protrusions are fixedly connected to the surface of the operating ring.

[0018] The effect achieved by the above components is: by setting the operating ring, the operating ring can increase the contact area of ​​the screw hole ring, so that a person can drive the screw hole ring to rotate quickly by manually rotating the operating ring.

[0019] Preferably, one end of the screw rod away from the protective shell is fixedly connected with a baffle, and the surface of the baffle is larger than the inner wall of the screw hole ring.

[0020] The effect achieved by the above components is: by setting the baffle, the baffle can intercept the screw hole ring during the movement, thereby reducing the situation where the screw hole ring is separated from the screw surface.

[0021] Compared with the prior art, the advantages and positive effects of the utility model are:

[0022] In the utility model, by providing a connecting device, the protective cover body can be quickly assembled and disassembled with the transformer body, thereby increasing the flexibility of use of the protective cover body, reducing the cumbersome situation of personnel installing the protective cover body in the early stage, and improving the convenience and efficiency of personnel maintaining the protective cover body in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 is a partial cross-sectional view of the present utility model Figure 1 ;

[0025] Figure 3 is a partial structural schematic diagram of the U-shaped plate of the present utility model;

[0026] Figure 4 is a partial structural schematic diagram of the present utility model Figure 1 .

[0027] Legend: 1. Transformer body; 2. Protective cover body; 3. Connecting device; 31. U-shaped plate; 32. Rectangular cylinder; 33. Round rod; 34. Block; 35. Spring; 36. Push rod; 37. Rubber strip; 38. Limit block; 39. Rectangular block; 310. Card slot; 311. Limit slot; 312. Bevel; 4. Adjusting device; 41. Groove; 42. Protective shell; 43. Wire passing hole; 44. Rectangular hole; 45. Screw; 46. Screw hole ring; 47. Operating ring; 48. Baffle plate Detailed implementation mode

[0028] Refer to Figures 1-4As shown, this embodiment discloses an oil-immersed transformer protective cover, including a transformer body 1, a protective cover body 2 is arranged on one side of the transformer body 1, a connecting device 3 is arranged between the transformer body 1 and the protective cover body 2, an adjusting device 4 is arranged on one side of the protective cover body 2, the connecting device 3 includes a U-shaped plate 31, the U-shaped plate 31 is fixedly connected to the transformer body 1, two rectangular tubes 32 are symmetrically fixedly connected to the surface of the U-shaped plate 31, the inner walls of the two rectangular tubes 32 are connected to the inner wall of the U-shaped plate 31, and the inner walls of the two rectangular tubes 32 are slidably connected There are round rods 33, and the adjacent ends of the two round rods 33 are fixedly connected with a block 34, and the block 34 is triangular. The ends of the two round rods 33 away from the block 34 are fixedly connected with springs 35, and the two springs 35 are respectively sleeved on the surfaces of the two round rods 33, and the other ends of the two springs 35 are respectively fixedly connected with the two rectangular tubes 32. A rectangular block 39 is fixedly connected to one side of the protective cover body 2, and two card grooves 310 are symmetrically opened on the surface of the rectangular block 39. The surface of the rectangular block 39 is slidably connected with the inner wall of the U-shaped plate 31. The surface size and shape of the block 34 The size and shape of the inner wall of the card slot 310 are matched. By setting the connecting device 3, the protective cover body 2 is first manually moved, so that the protective cover body 2 drives the rectangular block 39 to move. When the rectangular block 39 moves to the position of inserting into the interior of the U-shaped plate 31, the rectangular block 39 squeezes the two card blocks 34 to move away from the interior of the U-shaped plate 31. When the rectangular block 39 moves to the position of completely entering the interior of the U-shaped plate 31, the inner wall of the card slot 310 coincides with the inner wall of the rectangular tube 32. Under the reaction force of the spring 35, the two springs 35 drive the round rod 33 to move closer to the U The mold plate 31 moves in the inner direction, so that the two round rods 33 drive the two blocks 34 to move closer to each other. When the two blocks 34 are moved to the internal position of the two slots 310 at the same time, the quick assembly of the protective cover body 2 and the transformer body 1 is completed, so that the protective cover body 2 is fixed on the transformer body 1 to protect the outgoing cables and the terminal blocks. At the same time, the protective cover body 2 can be quickly disassembled in the later stage, which reduces the cumbersome situation when personnel install the protective cover body 2 in the early stage, and improves the convenience and efficiency of personnel in maintaining the protective cover body 2 in the later stage.

[0029] Reference Figure 3 and Figure 4As shown in the figure, in this embodiment, one end of each of the two round rods 33 is fixedly connected to a push rod 36, and one ends of the two push rods 36 are close to each other. By providing the push rods 36, personnel can manually push the two push rods 36 to drive the two round rods 33 to move towards each other, so that the two round rods 33 can drive the two clamping blocks 34 to quickly disengage from the inside of the clamping slots 310 to release the limitation on the rectangular block 39, improving the convenience of manually releasing the limitation on the protective cover body 2. On the adjacent sides of the two push rods 36, a plurality of rubber strips 37 are fixedly connected, and the plurality of rubber strips 37 are arranged at equal distances. By providing the rubber strips 37, the rubber strips 37 can increase the friction between the push rods 36 and the hands, reducing the situation of hand slipping when manually pushing the push rods 36.

[0030] Referring to Figure 3 and Figure 4 As shown in the figure, in this embodiment, a limiting groove 311 is opened on one side of the rectangular block 39, a limiting block 38 is fixedly connected to the inner wall of the U-shaped plate 31, and the surface of the limiting block 38 is slidably inserted into the inner wall of the limiting groove 311. By providing the limiting block 38 and the limiting groove 311, the limiting block 38 can be inserted into the inside of the limiting groove 311 to assist in limiting the rectangular block 39, reducing the situation of left and right shaking of the rectangular block 39 after it is inserted into the U-shaped plate 31. On the surface of the rectangular block 39, two bevel angles 312 are symmetrically opened, and the angles of the bevel angles 312 are adapted to the surface of the clamping block 34. By providing the bevel angles 312, the rectangular block 39 can more smoothly squeeze the surface of the clamping block 34 after being inserted into the U-shaped plate 31, reducing the situation of jamming when the rectangular block 39 squeezes the surface of the clamping block 34.

[0031] Referring to Figure 4 As shown in the figure, in this embodiment, the adjusting device 4 includes a groove 41 opened on one side of the protective cover body 2, a protective shell 42 is slidably connected to the inner wall of the groove 41, a plurality of wire passing holes 43 are opened on one side of the protective shell 42, a rectangular hole 44 is opened on one side of the protective cover body 2, a screw rod 45 is fixedly connected to one side of the protective shell 42, the screw rod 45 is arranged inside the rectangular hole 44, and a threaded hole ring 46 is threadedly connected to the surface of the screw rod 45. The surface of the threaded hole ring 46 is larger than the inner wall of the rectangular hole 44. By providing the adjusting device 4, first manually move the protective shell 42 so that the protective shell 42 moves up and down along the inside of the groove 41, so that the protective shell 42 drives the screw rod 45 to move up and down along the inside of the rectangular hole 44. When the protective shell 42 moves to an appropriate position, manually rotate the threaded hole ring 46 so that the threaded hole ring 46 moves left and right along the surface of the screw rod 45. When the threaded hole ring 46 moves to a position where it squeezes the surface of the protective cover body 2, the protective shell 42 is fixed at a specified position, thereby completing the spatial adjustment of the protective cover body 2, reducing the situation that the outgoing cable and the wiring terminal on the transformer body 1 are higher than the internal space of the protective cover body 2 during the use of the protective cover body 2, affecting the normal use and installation of the protective cover body 2, and improving the use flexibility of the protective cover body 2.

[0032] Refer to Figure 4 As shown, in this embodiment, one side of the screw hole ring 46 is fixedly connected with an operation ring 47. The operation ring 47 is sleeved on the surface of the screw rod 45, and a plurality of anti-slip protrusions are fixedly connected to the surface of the operation ring 47. By setting the operation ring 47, the contact area of the screw hole ring 46 can be increased, so that the operator can manually rotate the operation ring 47 to drive the screw hole ring 46 to rotate quickly. One end of the screw rod 45 away from the protective shell 42 is fixedly connected with a baffle 48, and the surface of the baffle 48 is larger than the inner wall of the screw hole ring 46. By setting the baffle 48, the baffle 48 can intercept the screw hole ring 46 during the moving process, and reduce the situation that the screw hole ring 46 is separated from the surface of the screw rod 45.

[0033] Working principle: First, manually move the protective cover body 2, so that the protective cover body 2 drives the rectangular block 39 to move. When the rectangular block 39 moves to the position where it is inserted into the U-shaped plate 31, the rectangular block 39 squeezes the two clamping blocks 34 to move away from the inside of the U-shaped plate 31. When the rectangular block 39 moves to the position where it completely enters the U-shaped plate 31, the inner wall of the card slot 310 coincides with the inner wall of the rectangular cylinder 32. Under the reaction force of the spring 35, the two springs 35 drive the round rod 33 to move towards the inside of the U-shaped plate 31, so that the two round rods 33 drive the two clamping blocks 34 to approach each other. When the two clamping blocks 34 simultaneously move to the position where they are inserted into the two card slots 310, the rapid assembly of the protective cover body 2 and the transformer body 1 is completed.

[0034] First, manually move the protective shell 42, so that the protective shell 42 moves up and down along the inside of the groove 41, and the protective shell 42 drives the screw rod 45 to move up and down along the inside of the rectangular hole 44. When the protective shell 42 moves to an appropriate position, manually rotate the screw hole ring 46, so that the screw hole ring 46 moves left and right along the surface of the screw rod 45. When the screw hole ring 46 moves to the position where it squeezes the surface of the protective cover body 2, the protective shell 42 is fixed at the specified position, thereby completing the space adjustment of the protective cover body 2.

[0035] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still belong to the protection scope of the technical solution of the present utility model. In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

Claims

1. An oil-immersed transformer protective cover, comprising a transformer body (1), characterized in that: A protective cover body (2) is provided on one side of the transformer body (1), a connecting device (3) is provided between the transformer body (1) and the protective cover body (2), an adjusting device (4) is provided on one side of the protective cover body (2), the connecting device (3) comprises a U-shaped plate (31), the U-shaped plate (31) is fixedly connected to the transformer body (1), two rectangular tubes (32) are symmetrically fixedly connected to the surface of the U-shaped plate (31), the inner walls of the two rectangular tubes (32) are connected to the inner wall of the U-shaped plate (31), the inner walls of the two rectangular tubes (32) are slidably connected to round rods (33), and the adjacent ends of the two round rods (33) are fixedly connected A clamping block (34) is provided, the clamping block (34) is triangular in shape, one end of the two round rods (33) away from the clamping block (34) is fixedly connected with a spring (35), the two springs (35) are respectively sleeved on the surfaces of the two round rods (33), the other ends of the two springs (35) are respectively fixedly connected with the two rectangular tubes (32), one side of the protective cover body (2) is fixedly connected with a rectangular block (39), the surface of the rectangular block (39) is symmetrically provided with two clamping grooves (310), the surface of the rectangular block (39) is slidably connected with the inner wall of the U-shaped plate (31), and the surface size and shape of the clamping block (34) are adapted to the size and shape of the inner wall of the clamping groove (310).

2. The oil-immersed transformer protective cover according to claim 1, characterized in that: One end of each of the two round rods (33) is fixedly connected to a push rod (36), and one end of the two push rods (36) is close to each other.

3. The oil-immersed transformer protective cover according to claim 2 is characterized in that: A plurality of rubber strips (37) are fixedly connected to adjacent sides of the two push rods (36), and the plurality of rubber strips (37) are arranged at equal distances.

4. The oil-immersed transformer protective cover according to claim 1, characterized in that: A limiting groove (311) is provided on one side of the rectangular block (39); the inner wall of the U-shaped plate (31) is fixedly connected to the limiting block (38); and the surface of the limiting block (38) is slidably connected to the inner wall of the limiting groove (311).

5. The oil-immersed transformer protective cover according to claim 1 is characterized in that: The surface of the rectangular block (39) is symmetrically provided with two oblique angles (312), and the angles of the oblique angles (312) are adapted to the surface of the clamping block (34).

6. The oil-immersed transformer protective cover according to claim 1, characterized in that: The adjusting device (4) comprises a groove (41) provided on one side of the protective cover body (2); a protective shell (42) is slidably connected to the inner wall of the groove (41); a plurality of threading holes (43) are provided on one side of the protective shell (42); a rectangular hole (44) is provided on one side of the protective cover body (2); a screw rod (45) is fixedly connected to one side of the protective shell (42); the screw rod (45) is arranged inside the rectangular hole (44); a screw hole ring (46) is threadedly connected to the surface of the screw rod (45); and the surface of the screw hole ring (46) is larger than the inner wall of the rectangular hole (44).

7. The oil-immersed transformer protective cover according to claim 6, characterized in that: An operating ring (47) is fixedly connected to one side of the screw hole ring (46). The operating ring (47) is sleeved on the surface of the screw rod (45). A plurality of anti-slip protrusions are fixedly connected to the surface of the operating ring (47).

8. The oil-immersed transformer protective cover according to claim 6, characterized in that: One end of the screw rod (45) away from the protective shell (42) is fixedly connected to a baffle plate (48), and the surface of the baffle plate (48) is larger than the inner wall of the screw hole ring (46).

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