Leak-proof high-sealing oil-immersed power transformer

Abstract

The utility model discloses a leakproof high-sealing oil-immersed power transformer which comprises a sealing box body, a cover body and a connecting assembly, a transformer main body is fixedly installed on the side, close to the sealing box body, of the cover body, the transformer main body extends into the sealing box body, and the cover body is fixed to the top of the sealing box body through the connecting assembly. According to the leakproof high-sealing oil-immersed power transformer, the connecting assembly is arranged, the transformer body is fixed in the sealing box body through the cover body, at the moment, the side, close to the sealing box body, of the cover body is attached to the sealing box body, and then the sliding frame slides to move towards the direction of the cover body; and the threaded rod is rotated to push the clamping strip to move downwards and extend into the clamping groove, so that the transformer main body is connected and fixed through the cover body. The problems that in the prior art, a transformer body is located in a sealing box, when the transformer body is damaged, the sealing box cannot be opened, a worker cannot maintain the transformer conveniently, and inconvenience is caused are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-immersed power transformers, in particular to a highly sealed oil-immersed power transformer with anti-leakage function. Background Technique

[0002] A power transformer is a static electrical device used to change an alternating voltage (current) of a certain value into another voltage (current) of the same frequency but with different values. According to the insulation and cooling conditions, it can be divided into oil-immersed transformers and dry transformers. To enhance the insulation and cooling conditions, the iron core and winding of the transformer are immersed together in an oil tank filled with transformer oil, which is an oil-immersed power transformer.

[0003] The patent document with the application number CN205582659U discloses an oil-immersed power transformer that can effectively prevent relative vibration between the water-cooling pipe and the transformer body. The key points of its technical solution are: including a sealed box and a transformer body installed inside the sealed box. The sealed box is filled with insulating oil. A pipeline for power connection is provided between the transformer body and the sealed box. A water-cooling pipe wound around the periphery of the transformer body is arranged inside the sealed box. The water inlet and outlet of the water-cooling pipe are respectively arranged on the sealed box. An insulating support rod is connected between the water-cooling pipe and the transformer body.

[0004] In the above related technology, the transformer body is located inside the sealed box. When the transformer body is damaged, the sealed box cannot be opened, which is inconvenient for the staff to maintain the transformer. In view of the above problems, we have developed a highly sealed oil-immersed power transformer with anti-leakage function. Content of the Utility Model

[0005] The utility model discloses a highly sealed oil-immersed power transformer with anti-leakage function, aiming to solve the technical problem that in the related technology, the transformer body is located inside the sealed box. When the transformer body is damaged, the sealed box cannot be opened, which is inconvenient for the staff to maintain the transformer.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A highly sealed oil-immersed power transformer with anti-leakage function includes a sealed box body, a cover body and a connecting component. One side of the cover body close to the sealed box body is fixedly installed with a transformer body. The transformer body extends into the sealed box body. The cover body is fixed on the top of the sealed box body through the connecting component.

[0008] The connection component includes a mounting frame, which is symmetrically and fixedly installed on both sides of the sealed box body. A sliding groove is formed inside the mounting frame. The outer side of the sealed box body is symmetrically and slidably connected with sliding frames. The bottom end of the sliding frame extends into the corresponding sliding groove and is slidably connected with the sliding groove. A moving groove is formed on one side of each sliding frame close to the sealed box body. A threaded rod is threadedly connected to the top of the sliding frame. A clamping strip is slidably connected inside the moving groove. The bottom end of the threaded rod extends into the clamping strip and is rotatably connected with the clamping strip. Card slots are symmetrically formed on the top of the cover body, and the clamping strip extends into the card slots.

[0009] By providing the connection component, the transformer body is fixed inside the sealed box body through the cover body. At this time, the side of the cover body close to the sealed box body is attached to the sealed box body. Then, slide the sliding frame towards the cover body, and then rotate the threaded rod to push the clamping strip to move downward and extend into the card slots. By providing the connection component, it is beneficial to repair the transformer body inside the sealed box body in the later stage; it solves the problem in the related technology that the transformer body is located inside the sealed box. When the transformer body is damaged, the sealed box cannot be opened, which is inconvenient for the staff to maintain the transformer.

[0010] In a preferred solution, a cooling coil is wound around the outside of the transformer body inside the sealed box body. Both ends of the cooling coil penetrate the inner wall of the sealed box body and extend to the outside of the sealed box body. The connection between the cooling coil and the sealed box body is fixedly welded. Fixed frames are fixedly installed around the inside of the sealed box body, and the fixed frames are used to fixedly clamp the cooling coil.

[0011] By providing that the fixed frame is made of insulating material and the fixed frame is used to clamp and fix the cooling coil, it is beneficial to prevent the shaking of the connection component caused by the water flow passing through the cooling coil.

[0012] In a preferred solution, a sealing ring is fixedly installed on the side of the cover body close to the sealed box body. A sealing groove is formed on the top of the sealed box body and close to the sealing ring, and the sealing ring extends into the sealing groove.

[0013] By providing that the sealing ring extends into the sealing groove, it is beneficial to strengthen the sealing performance at the connection between the sealed box body and the cover body and prevent the insulating oil inside the sealed box body from overflowing.

[0014] In a preferred solution, a limiting rod is fixedly installed at the bottom inside the sealed box body. A limiting block is fixedly installed on the outside of the transformer body and close to the limiting rod. A through groove is formed inside the limiting block, and the limiting block passes through the limiting rod through the through groove and is slidably connected with the limiting rod.

[0015] By setting the limit block to pass through the limit rod through the through groove and be slidably connected to the limit rod, it is beneficial to position the transformer body when fixing the transformer body inside the sealed box, and it is beneficial to prevent the transformer body from colliding with the cooling coil inside the sealed box when it is installed inside the sealed box by moving downward.

[0016] In a preferred embodiment, a positioning seat is fixedly installed at the bottom inside the sealed box. A positioning groove is formed on one side of the positioning seat close to the cover body. A positioning block is correspondingly fixedly installed on one side of the bottom of the transformer body close to the positioning groove, and the positioning block extends into the positioning groove.

[0017] By setting the positioning block at the bottom of the transformer body to extend into the positioning groove inside the positioning seat, the fixation is more stable.

[0018] In a preferred embodiment, moving rods are symmetrically and fixedly installed at the top of the clamping strip. The moving rods penetrate through the sliding frame and are slidably connected to the sliding frame.

[0019] By setting the moving rods and the moving rods penetrate through the sliding frame and are slidable with the sliding frame, it is beneficial to make the up and down movement of the clamping strip more stable.

[0020] In a preferred embodiment, positioning bolts are threadedly connected to the outer sides of the mounting frames. Threaded grooves are correspondingly formed on one side of the sliding frame close to the positioning bolts. The positioning bolts are used to fix the sliding frame.

[0021] By setting the positioning bolts, and threaded grooves are correspondingly formed on one side of the sealing ring close to the positioning bolts. Rotating the positioning bolts to extend into the sliding frame and penetrate through the sealed box and extend into the threaded grooves inside the sealing ring is beneficial to strengthening the connection and fixation between the sealed box and the cover body.

[0022] A leak-proof high-sealed oil-immersed power transformer provided by the present utility model has the following advantages:

[0023] Firstly, by setting the connection assembly, the transformer body is fixed inside the sealed box through the cover body. At this time, the side of the cover body close to the sealed box is in contact with the sealed box. Then, slide the sliding frame towards the cover body, and then rotate the threaded rod to push the clamping strip to move downward and extend into the clamping groove; by setting the connection assembly, it is beneficial to repair the transformer body inside the sealed box in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional schematic diagram of a leak-proof high-sealed oil-immersed power transformer proposed by the present utility model.

[0025] Figure 2 is a three-dimensional sectional schematic diagram of a leak-proof high-sealed oil-immersed power transformer proposed by the present utility model.

[0026] Figure 3 This is a three-dimensional sectional view schematic diagram of the sealed box body in a highly sealed oil-immersed power transformer with leakage prevention proposed by the present utility model.

[0027] Figure 4 This is a three-dimensional schematic diagram of the cover plate and the transformer body in a highly sealed oil-immersed power transformer with leakage prevention proposed by the present utility model.

[0028] In the attached drawings: 1. Sealed box body; 11. Sealing groove; 12. Limit rod; 13. Positioning seat; 131. Positioning groove; 14. Fixed frame; 2. Cover body; 21. Sealing ring; 3. Transformer body; 31. Limit block; 4. Connection assembly; 41. Mounting frame; 42. Slide groove; 43. Sliding frame; 44. Moving groove; 45. Threaded rod; 46. Card strip; 47. Card slot; 48. Moving rod; 49. Positioning bolt. Specific implementation manners

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Usually, the components of the embodiments of the present application described and marked in the attached drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the attached drawings is not intended to limit the scope of the present application to be protected, but only represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0030] A highly sealed oil-immersed power transformer with leakage prevention disclosed by the present utility model is mainly applied to the sealing scenario of oil-immersed power transformers.

[0031] Referring to Figure 1 and Figure 2 , a highly sealed oil-immersed power transformer with leakage prevention includes: a sealed box body 1, a cover body 2 and a connection assembly 4. A transformer body 3 is fixedly installed on one side of the cover body 2 close to the sealed box body 1. The transformer body 3 extends into the sealed box body 1, and the cover body 2 is fixed on the top of the sealed box body 1 through the connection assembly 4;

[0032] The connecting component 4 includes a mounting frame 41, and the mounting frame 41 is symmetrically and fixedly installed on both sides of the sealed box body 1. A sliding groove 42 is formed inside the mounting frame 41. Symmetrically, a sliding frame 43 is slidably connected to the outside of the sealed box body 1. The bottom end of the sliding frame 43 extends into the corresponding sliding groove 42 and is slidably connected to the sliding groove 42. A moving groove 44 is formed on one side of the sliding frame 43 close to the sealed box body 1. A threaded rod 45 is threadedly connected to the top of the sliding frame 43. A clamping bar 46 is slidably connected inside the moving groove 44. The bottom end of the threaded rod 45 extends into the clamping bar 46 and is rotatably connected to the clamping bar 46. Symmetrically, clamping grooves 47 are formed on the top of the cover body 2, and the clamping bar 46 extends into the clamping grooves 47.

[0033] Among them, a positioning seat 13 is fixedly installed at the bottom inside the sealed box body 1. A positioning groove 131 is formed on one side of the positioning seat 13 close to the cover body 2. Correspondingly, a positioning block is fixedly installed on one side of the bottom of the transformer body 3 close to the positioning groove 131, and the positioning block extends into the positioning groove 131; by setting the positioning block at the bottom of the transformer body 3 to extend into the positioning groove 131 inside the positioning seat 13, the fixation is more stable.

[0034] Among them, moving rods 48 are symmetrically and fixedly installed on the top of the clamping bar 46. The moving rods 48 penetrate through the sliding frame 43 and are slidably connected to the sliding frame 43; by setting the moving rods 48 and the moving rods 48 penetrate through the sliding frame 43 and are slidably connected to the sliding frame 43, it is beneficial to make the up and down movement of the clamping bar 46 more stable.

[0035] In this embodiment: by setting the connecting component 4, the transformer body 3 is fixed inside the sealed box body 1 through the cover body 2. At this time, the side of the cover body 2 close to the sealed box body 1 is attached to the sealed box body 1. Then, slide the sliding frame 43 towards the cover body 2, and then rotate the threaded rod 45 to push the clamping bar 46 to move downward and extend into the clamping grooves 47; by setting the connecting component 4, it is beneficial to repair the transformer body 3 inside the sealed box body 1 in the later stage; it solves the problem that in the related technology, the transformer body is located inside the sealed box. When the transformer body is damaged, the sealed box cannot be opened, which is inconvenient for the staff to maintain the transformer.

[0036] In the above technical solution, considering the problem of strengthening the connection sealing performance between the sealed box body 1 and the cover body 2, to solve such problems, the specific operation is as follows:

[0037] Refer to Figure 3 and Figure 4 , in a preferred embodiment, a sealing ring 21 is fixedly installed on the side of the cover body 2 close to the sealed box body 1. A sealing groove 11 is formed on the top of the sealed box body 1 and close to the sealing ring 21, and the sealing ring 21 extends into the sealing groove 11;

[0038] Among them, positioning bolts 49 are threadedly connected to the outer sides of the mounting brackets 41. Threaded grooves are correspondingly formed on one side of the sliding brackets 43 close to the positioning bolts 49. The positioning bolts 49 are used for fixing the sliding brackets 43. By providing the positioning bolts 49, and corresponding threaded grooves are formed on one side of the sealing rings 21 close to the positioning bolts 49. Rotating the positioning bolts 49 extends into the sliding brackets 43 and penetrates through the sealed housing 1 and extends into the threaded grooves inside the sealing rings 21, which is beneficial to strengthening the connection and fixation between the sealed housing 1 and the cover body 2.

[0039] In this embodiment: By providing the sealing rings 21 extending into the sealing grooves 11, it is beneficial to strengthening the sealing performance at the connection between the sealed housing 1 and the cover body 2, and preventing the insulating oil inside the sealed housing 1 from overflowing.

[0040] In the above technical solution, considering the problem of cooling the insulating oil inside the sealed housing 1, to solve such problems, the specific operation is as follows

[0041] Refer to Figure 2 and Figure 3 , in a preferred embodiment, a cooling coil 5 is wound around the outside of the transformer body 3 inside the sealed housing 1. Both ends of the cooling coil 5 penetrate through the inner wall of the sealed housing 1 and extend outside the sealed housing 1. The connection between the cooling coil 5 and the sealed housing 1 is fixedly welded. Fixing brackets 14 are fixedly installed around the inside of the sealed housing 1. The fixing brackets 14 are used for fixedly clamping the cooling coil 5;

[0042] Among them, a limiting rod 12 is fixedly installed at the bottom inside the sealed housing 1. A limiting block 31 is fixedly installed on the outside of the transformer body 3 and close to the limiting rod 12. A through groove is formed inside the limiting block 31. The limiting block 31 passes through the limiting rod 12 through the through groove and is slidably connected to the limiting rod 12. By providing the limiting block 31 passing through the limiting rod 12 through the through groove and being slidably connected to the limiting rod 12, it is beneficial to positioning the transformer body 3 when the transformer body 3 is fixed inside the sealed housing 1, and is beneficial to preventing the transformer body 3 from colliding with the cooling coil 5 inside the sealed housing 1 when the transformer body 3 is installed inside the sealed housing 1 by moving downward.

[0043] In this embodiment: By providing the fixing brackets 14 made of insulating material, and the fixing brackets 14 are used for clamping and fixing the cooling coil 5, it is beneficial to preventing the shaking of the connection assembly 4 caused by the water flow passing through the cooling coil 5.

[0044] Working principle: When in use, first fix the transformer body 3 inside the sealed box body 1 through the cover body 2. At this time, the side of the cover body 2 close to the sealed box body 1 is in contact with the sealed box body 1. Then slide the sliding frame 43 towards the cover body 2, and then push the clamping bar 46 to move downward by rotating the threaded rod 45 until it extends into the clamping groove 47. By setting the positioning bolt 49, and corresponding threaded grooves are provided on the side of the sealing ring 21 close to the positioning bolt 49. Rotating the positioning bolt 49 extends into the sliding frame 43 and passes through the sealed box body 1 and extends into the threaded groove inside the sealing ring 21, which is beneficial to strengthening the connection and fixation between the sealed box body 1 and the cover body 2.

[0045] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The substitution may be the substitution of part of the structure, device, method steps, or a complete technical solution. Any equivalent substitution or change made according to the technical solution of the present invention and its inventive concept should be covered within the protection scope of the present invention.

Claims

1. A leak-proof, highly sealed oil-immersed power transformer, comprising a sealed box (1), a cover (2) and a connecting assembly (4), characterized in that: A transformer body (3) is fixedly mounted on one side of the cover body (2) close to the sealed box body (1); the transformer body (3) extends into the interior of the sealed box body (1); and the cover body (2) is fixed to the top of the sealed box body (1) via a connecting assembly (4); The connecting assembly (4) comprises a mounting frame (41), wherein the mounting frame (41) is symmetrically fixedly mounted on both sides of the sealing box (1), a slide groove (42) is provided inside the mounting frame (41), a sliding frame (43) is symmetrically slidably connected to the outer side of the sealing box (1), the bottom end of the sliding frame (43) extends to the inside of the corresponding slide groove (42) and is slidably connected to the slide groove (42), a moving groove (44) is provided on one side of the sliding frame (43) close to the sealing box (1), a threaded rod (45) is threadedly connected to the top of the sliding frame (43), a clamping strip (46) is slidably connected to the inside of the moving groove (44), the bottom end of the threaded rod (45) extends to the inside of the clamping strip (46) and is rotatably connected to the clamping strip (46), and a clamping groove (47) is symmetrically provided on the top of the cover body (2), and the clamping strip (46) extends to the inside of the clamping groove (47).

2. The anti-leakage high-sealed oil-immersed power transformer according to claim 1, characterized in that: A cooling coil (5) is wound inside the sealed box (1) and outside the transformer body (3); both ends of the cooling coil (5) penetrate the inner wall of the sealed box (1) and extend to the outside of the sealed box (1); the cooling coil (5) and the sealed box (1) are fixedly welded at their joints; a fixing frame (14) is fixedly installed around the inside of the sealed box (1); the fixing frame (14) is used to fix and clamp the cooling coil (5).

3. The anti-leakage high-sealed oil-immersed power transformer according to claim 1, characterized in that: A sealing ring (21) is fixedly mounted on one side of the cover body (2) close to the sealing box body (1), a sealing groove (11) is provided on the top of the sealing box body (1) and close to the sealing ring (21), and the sealing ring (21) extends into the interior of the sealing groove (11).

4. The anti-leakage high-sealed oil-immersed power transformer according to claim 1, characterized in that: A limiting rod (12) is fixedly installed at the bottom of the sealed box (1), and a limiting block (31) is fixedly installed on the outside of the transformer body (3) and on a side close to the limiting rod (12). A through slot is provided inside the limiting block (31), and the limiting block (31) passes through the limiting rod (12) through the through slot and is slidably connected to the limiting rod (12).

5. The anti-leakage high-sealed oil-immersed power transformer according to claim 1, characterized in that: A positioning seat (13) is fixedly mounted on the bottom of the sealed box body (1), a positioning groove (131) is provided on a side of the positioning seat (13) close to the cover body (2), and a positioning block is correspondingly fixedly mounted on a side of the bottom of the transformer body (3) close to the positioning groove (131), and the positioning block extends into the interior of the positioning groove (131).

6. The anti-leakage high-sealed oil-immersed power transformer according to claim 1, characterized in that: A moving rod (48) is symmetrically fixedly mounted on the top of the clamping strip (46), and the moving rod (48) penetrates the sliding frame (43) and is slidably connected to the sliding frame (43).

7. The anti-leakage high-sealed oil-immersed power transformer according to claim 1, characterized in that: The outer side of the mounting frame (41) is threadedly connected with a positioning bolt (49), and a thread groove is correspondingly provided on one side of the sliding frame (43) close to the positioning bolt (49), and the positioning bolt (49) is used to fix the sliding frame (43).

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