Connecting plug for radiator of oil-immersed transformer

Abstract

The utility model discloses a connecting plug for a radiator of an oil-immersed transformer, which belongs to the technical field of transformers and comprises a main body column, the main body column is of a hollow structure, the outer side wall of the main body column is sleeved and fixedly connected with a plugging ring plate, one side of the plugging ring plate is fixedly connected with a conical plug, the conical plug is sleeved on the main body column, and the plugging ring plate is fixedly connected with the conical plug. An abutting adjusting mechanism is arranged in the main body column, four sliding groove openings which are formed in a surrounding mode at equal intervals are formed in the outer side wall of the main body column, and the four ends of the abutting adjusting mechanism penetrate through the four sliding groove openings correspondingly and are fixedly connected with four abutting plates which are arranged in a surrounding mode at equal intervals. According to the device, the abutting adjusting mechanism is arranged, the four abutting plates can be pushed to abut against the inner wall of the connector end of the radiator, installation and fixation of the device can be achieved, fixation is more stable and firmer, the sealing effect is better, a limiting bolt and a limiting groove are arranged, the rotating block can be prevented from rotating, and the connecting stability is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to an oil-immersed transformer radiator connection plug. Background Art

[0002] The oil-immersed transformer is filled with transformer oil in the oil tank. During assembly, the oil-resistant rubber components are pressurized and sealed by fasteners. Poor sealing is the main reason for transformer oil leakage, so special attention should be paid during maintenance. The oil-immersed transformer is a type of transformer. Since the transformer generates a lot of heat during use, in order to avoid excessive temperature affecting the performance of the transformer, a radiator needs to be set to dissipate heat for the transformer. The radiator needs to be inspected and tested after production and processing, mainly to check the sealing of the radiator.

[0003] In a Chinese patent for a connection plug for rapid leakage detection of an oil-immersed transformer radiator (patent number: CN218510415U), the device includes a plug seat, a locking nut arranged on the upper end surface of the plug seat, a flat pad arranged on the bottom surface of the plug seat, a screw connected to the locking nut, the screw passes through the plug seat and the flat pad and extends below the bottom surface of the flat pad, an annular seal is arranged on the bottom surface of the flat pad, and a tightening head matching the annular seal is arranged at the end of the screw, and the tightening head is connected to the inside of the annular seal. The patent sets a locking nut, a screw, an tightening head and an annular seal. The seal can be quickly tightened and loosened when the nut is turned, so that the radiator pipe can be quickly sealed and opened. The installation and removal of the plug are relatively convenient, and the whole process saves time and effort, shortens the operation time of a single leak detection, reduces the labor intensity of workers, improves operation efficiency, and reduces production costs. However, the device uses a tensioning head to expand the annular seal to achieve connection and sealing at the connecting pipe head of the oil-immersed transformer radiator. The structure is too simple, the annular seal and the inner wall of the connecting pipe head of the radiator are not tightly expanded, and the connection is not firm enough, which affects the sealing effect. Utility Model Content

[0004] The utility model aims to provide an oil-immersed transformer radiator connection plug to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a connecting plug for an oil-immersed transformer radiator, comprising a main body column, the main body column being a hollow structure, the outer side wall of the main body column being sleeved and fixedly connected with a sealing ring plate, one side of the sealing ring plate being fixedly connected with a conical plug, the conical plug being sleeved on the main body column, a tightening adjustment mechanism being provided in the main body column, the outer side wall of the main body column being provided with four sliding groove openings arranged around at equal intervals, the four ends of the tightening adjustment mechanism respectively passing through the four sliding groove openings and being fixedly connected with four tightening plates arranged around at equal intervals;

[0006] The clamping adjustment mechanism includes a rotating rod inserted at one end of the main column and rotatably connected thereto, one end of the rotating rod is fixedly connected to a bidirectional screw rod, the inner wall of the main column is rotatably connected to the bidirectional screw rod through a bearing seat, two symmetrically arranged threaded blocks are threadedly connected to the bidirectional screw rod, four groups of symmetrically arranged rocker arms are hingedly connected to the side walls around the two threaded blocks, the four groups of rocker arms respectively pass through four sliding grooves and are hingedly connected to fixed blocks, and the fixed blocks are fixedly connected to the inner wall of the clamping plate.

[0007] As a further solution of the utility model: wherein, one end of the rotating rod located outside the main column is fixedly connected with a rotating block.

[0008] As a further solution of the utility model: wherein, a threaded hole is opened on the side wall of the rotating block, a limiting bolt is threadedly connected in the threaded hole, and a limiting groove is opened on the side wall of one end of the main column with equal intervals around it, and one end of the limiting bolt is inserted into the limiting groove.

[0009] As a further solution of the utility model: wherein, a through hole is opened at one end of the main column, and the through hole is rotatably connected to the outer side wall of the rotating rod through a bearing member.

[0010] As a further solution of the utility model: wherein, the inner walls on both sides of the sliding groove opening are frictionally connected to the side walls on both sides of the two rocker rods.

[0011] As a further solution of the utility model: wherein, a sealing gasket is fixedly connected to the outer side wall of the connection between the conical plug and the sealing ring plate.

[0012] As a further solution of the utility model: wherein, the clamping plate is arranged in an arc-shaped structure, and an outer side wall of the clamping plate is fixedly connected with an anti-slip pad.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. This oil-immersed transformer radiator connection plug is provided with a tightening adjustment mechanism and four tightening plates. The device is inserted into the radiator connection port, and the conical plug and the sealing ring plate are pressed against the connection port end for sealing. Then, the rotating block is rotated to drive the bidirectional screw fixed to the rotating rod to rotate. At this time, the two threaded blocks are forced to move toward each other, which can drive the two swing rods of each group to swing, and then push the tightening plate fixed to the fixed block to move away from the main column until it is pressed against the inner wall of the radiator connection port end, so that the installation and fixation of the device can be realized, and the fixation is more stable and reliable, and the sealing effect is better.

[0015] 2. This oil-immersed transformer radiator connection plug is provided with a limit bolt and a limit groove. When the rotation limit bolt is inserted into the limit groove, the rotation of the rotating block can be restricted to prevent the rotating block from rotating due to external force, thereby avoiding affecting the stability of the connection of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model;

[0018] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0019] Figure 4 It is a left-side structural schematic diagram of the main column in the utility model.

[0020] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0021] 1. Main column; 2. Sealing ring plate; 3. Conical plug; 4. Slide groove; 5. Tightening plate; 6. Turn rod; 7. Bidirectional screw rod; 8. Threaded block; 9. Rocker arm; 10. Fixed block; 11. Turn block; 12. Threaded hole; 13. Limit bolt; 14. Limit groove; 15. Sealing gasket; 16. Anti-slip pad. DETAILED DESCRIPTION

[0022] See also Figures 1 to 4 In the practical embodiment, a connecting plug for an oil-immersed transformer radiator comprises a main column 1, which is a hollow structure. A sealing ring plate 2 is sleeved and fixedly connected to the outer wall of the main column 1. A conical plug 3 is fixedly connected to one side of the sealing ring plate 2. The conical plug 3 is sleeved on the main column 1, and a tightening adjustment mechanism is provided in the main column 1. Four sliding grooves 4 arranged around with equal spacing are opened on the outer wall of the main column 1. The four ends of the tightening adjustment mechanism pass through the four sliding grooves 4 respectively and are fixedly connected to four tightening plates 5 arranged around with equal spacing.

[0023] The tightening adjustment mechanism includes a rotating rod 6 inserted at one end of the main column 1 and rotatably connected thereto, one end of the rotating rod 6 is fixedly connected to a bidirectional screw rod 7, the inner wall of the main column 1 is rotatably connected to the bidirectional screw rod 7 through a bearing seat, two symmetrically arranged threaded blocks 8 are threadedly connected to the bidirectional screw rod 7, and four groups of symmetrically arranged swing rods 9 are hingedly connected to the side walls around the two threaded blocks 8, and the four groups of swing rods 9 pass through four slide grooves 4 respectively and are hingedly connected to fixed blocks 10, and the fixed blocks 10 are fixedly connected to the inner wall of the tightening plate 5. When it is necessary to block the connection port of the oil-immersed transformer radiator, first The device is inserted into the radiator connection port, and the conical plug 3 and the sealing ring plate 2 are pressed against the connection port end for sealing. Then, the rotating block 11 is rotated to drive the bidirectional screw 7 fixed to the rotating rod 6 to rotate. Since the bidirectional screw 7 is threadedly connected to the two threaded blocks 8 respectively, at this time, the two threaded blocks 8 are forced to move toward each other, which can drive the two swing rods 9 of each group to swing, and then push the pressing plate 5 fixed to the fixed block 10 to move away from the main column 1 until it presses against the inner wall of the radiator connection port end, so as to realize the installation and fixation of the device, and the fixation is more stable and reliable, and the sealing effect is better.

[0024] like Figure 3 As shown: one end of the rotating rod 6 located outside the main column 1 is fixedly connected with a rotating block 11 to facilitate the rotation of the rotating rod 6.

[0025] like Figure 3 As shown: a threaded hole 12 is provided on the side wall of the rotating block 11, and a limiting bolt 13 is threadedly connected in the threaded hole 12. A limiting groove 14 is arranged around the side wall of one end of the main column 1 at equal intervals. One end of the limiting bolt 13 is inserted into the limiting groove 14. When the rotating limiting bolt 13 is inserted into the limiting groove 14, the rotation of the rotating block 11 can be restricted to prevent the rotating block 11 from rotating due to external force, thereby avoiding affecting the stability of the connection of the device.

[0026] like Figure 3 As shown: a through hole is opened at one end of the main column 1, and the through hole is rotatably connected to the outer wall of the rotating rod 6 through a bearing member to facilitate the rotation of the rotating rod 6.

[0027] like Figure 2 As shown: the inner walls on both sides of the slide slot opening 4 are frictionally connected with the side walls on both sides of the two swing rods 9, so that the swing of the swing rods 9 is more stable.

[0028] like Figure 2 As shown: a sealing gasket 15 is fixedly connected to the outer wall of the connection between the conical plug 3 and the sealing ring plate 2 to further improve the sealing performance.

[0029] like Figure 4 As shown: the clamping plate 5 is arranged in an arc-shaped structure, so as to fit the inner wall of the interface end of the oil-immersed transformer radiator easily. The outer wall of the clamping plate 5 is fixedly connected with an anti-skid pad 16 to improve the anti-skid property and make the clamping more stable and reliable.

[0030] Working principle: When it is necessary to use this device to seal the connection port of the oil-immersed transformer radiator, the conical plug 3 and the sealing ring plate 2 are pressed against the connection port end for sealing, and then the rotating block 11 is rotated to drive the bidirectional screw 7 fixed to the rotating rod 6 to rotate. Since the bidirectional screw 7 is threadedly connected to the two threaded blocks 8 respectively, at this time, the two threaded blocks 8 are forced to move toward each other, which can drive the two rocker bars 9 of each group to swing, and then push the clamping plate 5 fixed to the fixed block 10 to move away from the main column 1 until it is pressed against the inner wall of the radiator connection port end, so as to realize the installation and fixation of this device, and the fixation is more stable and reliable, and the sealing effect is better. Then, when the limiting bolt 13 is rotated and inserted into the limiting groove 14, the rotation of the rotating block 11 can be restricted to prevent the rotating block 11 from rotating due to external force, so as to avoid affecting the stability of the connection of this device.

[0031] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A connecting plug for an oil-immersed transformer radiator, comprising a main column (1), characterized in that: The main column (1) is a hollow structure, the outer wall of the main column (1) is sleeved with and fixedly connected to a blocking ring plate (2), one side of the blocking ring plate (2) is fixedly connected to a conical plug (3), the conical plug (3) is sleeved on the main column (1), a tightening adjustment mechanism is provided in the main column (1), the outer wall of the main column (1) is provided with four sliding groove openings (4) arranged around at equal intervals, and the four ends of the tightening adjustment mechanism respectively pass through the four sliding groove openings (4) and are fixedly connected to four tightening plates (5) arranged around at equal intervals; The clamping adjustment mechanism comprises a rotating rod (6) inserted into one end of the main column (1) and rotatably connected thereto, one end of the rotating rod (6) is fixedly connected to a bidirectional screw rod (7), the inner wall of the main column (1) is rotatably connected to the bidirectional screw rod (7) via a bearing seat, two symmetrically arranged threaded blocks (8) are threadedly connected to the bidirectional screw rod (7), four groups of symmetrically arranged swing rods (9) are hingedly connected to the surrounding side walls of the two threaded blocks (8), the four groups of swing rods (9) respectively pass through four sliding groove openings (4) and are hingedly connected to fixed blocks (10), and the fixed blocks (10) are fixedly connected to the inner wall of the clamping plate (5).

2. The oil-immersed transformer radiator connection plug according to claim 1, characterized in that: One end of the rotating rod (6) located outside the main column (1) is fixedly connected to a rotating block (11).

3. The oil-immersed transformer radiator connection plug according to claim 2, characterized in that: A threaded hole (12) is provided on the side wall of the rotating block (11), a limiting bolt (13) is threadedly connected in the threaded hole (12), and a limiting groove (14) is provided on the side wall of one end of the main column (1) at equal intervals, and one end of the limiting bolt (13) is inserted into the limiting groove (14).

4. The oil-immersed transformer radiator connection plug according to claim 1, characterized in that: A through hole is formed at one end of the main column (1), and the through hole is rotatably connected to the outer wall of the rotating rod (6) via a bearing member.

5. The oil-immersed transformer radiator connection plug according to claim 1, characterized in that: The inner walls on both sides of the sliding groove opening (4) are frictionally connected to the side walls on both sides of the two swing rods (9).

6. The oil-immersed transformer radiator connection plug according to claim 1, characterized in that: A sealing gasket (15) is fixedly connected to the outer side wall of the connection between the conical plug (3) and the sealing ring plate (2).

7. The oil-immersed transformer radiator connection plug according to claim 1, characterized in that: The abutting plate (5) is arranged in an arc-shaped structure, and an anti-slip pad (16) is fixedly connected to the outer side wall of the abutting plate (5).

Images