Distribution transformer bushing

Abstract

The utility model discloses a distribution transformer bushing, which comprises a transformer bushing body, a conducting rod is arranged above the transformer bushing body, one side of the conducting rod is provided with an end block, the end block is contacted with the end part of the transformer bushing body, the transformer bushing body is provided with an oil storage cavity, the conducting rod is connected with a conducting copper rod, and the conducting copper rod is connected with the oil storage cavity. The conductive copper rod penetrates through the oil storage cavity, a constraint assembly is arranged in the oil storage cavity, the distribution transformer bushing is provided with the constraint assembly, the conductive copper rod is located in the constraint assembly after penetrating through the oil storage cavity, the conductive copper rod can be sleeved with a constraint ring on the constraint assembly, and through constraint of the constraint ring, the situation that the long conductive copper rod moves in the oil storage cavity is avoided; the problem that the insulation effect is poor due to the fact that the end block is installed on the transformer bushing body is solved, and mutual connection and fixation between the end block and the transformer bushing body are achieved through the arranged fixing assembly and the connecting bolt.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer bushings, and particularly relates to a distribution transformer bushing. Background Art

[0002] The transformer bushing is the main insulation device outside the transformer tank. The lead-out wires of the transformer winding must pass through the insulating bushing to insulate between the lead-out wires and between the lead-out wires and the transformer shell, and at the same time play a role in fixing the lead-out wires. Due to different voltage levels, the insulating bushings have forms such as pure porcelain bushings, oil-filled bushings, and capacitor bushings. The pure porcelain bushing is mostly used in transformers of 10 kV and below. It has a conductive copper rod passing through the porcelain bushing, and the inside of the porcelain bushing is air-insulated; the oil-filled bushing is mostly used in transformers of 35 kV class. It is filled with oil in the porcelain bushing, and a conductive copper rod passes through the porcelain bushing. The copper rod is wrapped with insulating paper. On the distribution box, a transformer bushing is set to insulate and protect the distribution box.

[0003] When using the transformer bushing with an oil-filled bushing, the inside of the bushing is filled with transformer oil. The traditional seal uses a single sealing ring for sealing, and the sealing effect is average. Moreover, after the conductive copper rod inside shakes or moves, the position of the copper rod relative to the bushing changes, thus affecting the insulation effect of the bushing. For this reason, a distribution transformer bushing is proposed. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a distribution transformer bushing to solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A distribution transformer bushing includes a transformer bushing body. A conductive rod is arranged above the transformer bushing body. An end block is arranged on one side of the conductive rod, and the end block is in contact with the end of the transformer bushing body. A storage cavity is arranged on the transformer bushing body. A conductive copper rod is connected to the conductive rod, and the conductive copper rod passes through the storage cavity. A constraint component is arranged in the storage cavity. A clamping and sealing component is arranged at the end of the transformer bushing body. The transformer bushing body and the end block are connected through a fixing component.

[0007] Preferably, the constraint component includes a connection block fixedly installed on the inner wall of the storage cavity. A constraint ring is installed on the connection block. The constraint ring is located outside the conductive copper rod, and the constraint ring is made of insulating ceramic.

[0008] Preferably, the clamping and sealing component includes a clamping groove opened at the end of the transformer bushing body. A bottom sealing groove is opened on the inner wall of the clamping groove. A clamping ring is fixedly installed on the bottom side of the end block, and the clamping ring is clamped in the clamping groove.

[0009] Preferably, a clamping gasket is installed on the inner wall of the bottom sealing groove. An extrusion cavity is arranged in the clamping gasket, and the clamping ring is adapted to the clamping gasket.

[0010] Preferably, two contact sealing rings are installed on the top of the transformer bushing body. The two contact sealing rings are located on both sides of the clamping ring and are adapted to one side of the end block.

[0011] Preferably, the fixing assembly includes a lower fixing ring fixedly installed on the outer side of the transformer bushing body. An upper fixing ring is fixedly installed on the outer side of the end block, and a plurality of connecting bolts are installed between the upper fixing ring and the lower fixing ring.

[0012] Preferably, a wiring board is installed on the bottom side of the transformer bushing body, and a plurality of annular rings are arranged on the outer side of the transformer bushing body.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: for this distribution transformer bushing, with the provided constraint assembly, after the conductive copper rod passes through the oil storage cavity, it will be located in the constraint assembly. The constraint ring on the constraint assembly can be sleeved outside the conductive copper rod. Through the constraint of the constraint ring, it is avoided that the longer conductive copper rod moves in the oil storage cavity, resulting in a poor insulation effect. The end block is installed on the transformer bushing body. With the provided fixing assembly, the connection and fixation between the end block and the transformer bushing body are realized through the connecting bolts;

[0014] After the connection and fixation, with the provided clamping and sealing assembly, the clamping ring squeezes the clamping gasket, and the air in the extrusion cavity will move outward. Through extrusion, the clamping gasket extruded to the outside will fill the bottom sealing groove, thus achieving the effect of extrusion and filling sealing. At the same time, the two contact sealing rings at the contact part can also effectively realize the sealed connection between the transformer bushing body and the end block. Through double-layer sealing, the sealing effect is effectively guaranteed, and the problem of oil leakage will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a left-side perspective structural schematic diagram of the present utility model;

[0016] Figure 2 is a right-side perspective structural schematic diagram of the present utility model;

[0017] Figure 3 is a sectional structural schematic diagram of the present utility model;

[0018] Figure 4 is the present utility model Figure 3 structural schematic diagram of part A in.

[0019] In the figure: 1. Transformer bushing body; 2. Conductive rod; 3. Wiring board; 4. End block; 5. Conductive copper rod; 6. Oil storage cavity; 7. Constraint ring; 8. Connection block; 9. Clamping groove; 10. Bottom sealing groove; 11. Clamping ring; 12. Clamping gasket; 13. Extrusion cavity; 14. Contact sealing ring; 15. Upper fixing ring; 16. Lower fixing ring; 17. Connecting bolt. Detailed implementation manner

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment: Refer to Figures 1-4 , a distribution transformer bushing, including a transformer bushing body 1, a conductive rod 2 is provided above the transformer bushing body 1, an end block 4 is provided on one side of the conductive rod 2, the end block 4 is in contact with the end of the transformer bushing body 1, an oil storage cavity 6 is provided on the transformer bushing body 1, a conductive copper rod 5 is connected to the conductive rod 2, the conductive copper rod 5 passes through the oil storage cavity 6, a constraint component is provided in the oil storage cavity 6, the constraint component includes a connection block 8 fixedly installed on the inner wall of the oil storage cavity 6, a constraint ring 7 is installed on the connection block 8, the constraint ring 7 is located outside the conductive copper rod 5, the constraint ring 7 is made of insulating ceramic, a constraint component is provided in the oil storage cavity 6, after the conductive copper rod 5 passes through the oil storage cavity 6, it will be located in the constraint component, and the constraint ring 7 on the constraint component can be sleeved outside the conductive copper rod 5. Through the constraint of the constraint ring 7, the problem that the relatively long conductive copper rod 5 moves in the oil storage cavity 6 and causes poor insulation effect can be avoided.

[0022] Specifically, a clamping and sealing component is provided at the end of the transformer bushing body 1, the transformer bushing body 1 and the end block 4 are connected by a fixing component, a wiring board 3 is installed on the bottom side of the transformer bushing body 1, and a plurality of annular rings are provided on the outer side of the transformer bushing body 1. The fixing component includes a lower fixing ring 16 fixedly installed on the outer side of the transformer bushing body 1, an upper fixing ring 15 is fixedly installed on the outer side of the end block 4, a plurality of connecting bolts 17 are installed between the upper fixing ring 15 and the lower fixing ring 16, and the end block 4 is installed on the transformer bushing body 1. The provided clamping and sealing component, the clamping ring 11 on the clamping and sealing component can be clamped in the clamping groove 9. By placing two contact sealing rings 14 on both sides of the clamping ring 11, the mutual connection and fixation between the end block 4 and the transformer bushing body 1 are realized through the connecting bolts 17 on the fixing component.

[0023] Specifically, the clamping and sealing assembly includes a clamping groove 9 opened at the end of the transformer bushing body 1. A bottom sealing groove 10 is opened on the inner wall of the clamping groove 9. A clamping ring 11 is fixedly installed on the bottom side of the end block 4. The clamping ring 11 is clamped in the clamping groove 9. A clamping gasket 12 is installed on the inner wall of the bottom sealing groove 10. An extrusion cavity 13 is provided in the clamping gasket 12. The clamping ring 11 is adapted to the clamping gasket 12. Two contact sealing rings 14 are installed on the top of the transformer bushing body 1. The two contact sealing rings 14 are located on both sides of the clamping ring 11. The two contact sealing rings 14 are adapted to one side of the end block 4. After connection and fixation, the clamping ring 11 squeezes the clamping gasket 12. There is an extrusion cavity 13 in the clamping gasket 12. After being squeezed, the air in the extrusion cavity 13 will move outward. Through extrusion, the clamping gasket 12 extruded to the outside will fill the bottom sealing groove 10, thus achieving the effect of extrusion filling and sealing. At the same time, the two contact sealing rings 14 at the contact part can also effectively realize the sealed connection between the transformer bushing body 1 and the end block 4. Through double-layer sealing, the sealing effect is effectively guaranteed, and the problem of oil leakage will not occur.

[0024] During use: An oil storage cavity 6 is provided on the inner wall of the transformer bushing body 1. A constraint assembly is provided in the oil storage cavity 6. After the conductive copper rod 5 passes through the oil storage cavity 6, it will be located in the constraint assembly. The constraint ring 7 on the constraint assembly can be sleeved outside the conductive copper rod 5. Through the constraint of the constraint ring 7, the longer conductive copper rod 5 is prevented from moving in the oil storage cavity 6, resulting in a poor insulation effect. The end block 4 is installed on the transformer bushing body 1. The provided clamping and sealing assembly, and the clamping ring 11 on the clamping and sealing assembly can be clamped in the clamping groove 9. By placing the two contact sealing rings 14 on both sides of the clamping ring 11, the connection bolt 17 on the fixing assembly is used to realize the mutual connection and fixation between the end block 4 and the transformer bushing body 1. After connection and fixation, the clamping ring 11 squeezes the clamping gasket 12. There is an extrusion cavity 13 in the clamping gasket 12. After being squeezed, the air in the extrusion cavity 13 will move outward. Through extrusion, the clamping gasket 12 extruded to the outside will fill the bottom sealing groove 10, thus achieving the effect of extrusion filling and sealing. At the same time, the two contact sealing rings 14 at the contact part can also effectively realize the sealed connection between the transformer bushing body 1 and the end block 4. Through double-layer sealing, the sealing effect is effectively guaranteed, and the problem of oil leakage will not occur, which is convenient to use.

[0025] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A distribution transformer bushing, comprising a transformer bushing body (1), characterized in that: A conductive rod (2) is provided above the transformer bushing body (1), an end block (4) is provided on one side of the conductive rod (2), the end block (4) is in contact with the end of the transformer bushing body (1), an oil storage cavity (6) is provided on the transformer bushing body (1), a conductive copper rod (5) is connected to the conductive rod (2), the conductive copper rod (5) passes through the oil storage cavity (6), a restraining component is provided in the oil storage cavity (6), a clamping sealing component is provided at the end of the transformer bushing body (1), and the transformer bushing body (1) and the end block (4) are connected via a fixing component.

2. A distribution transformer bushing according to claim 1, characterized in that: The constraint assembly comprises a connection block (8) fixedly mounted on the inner wall of the oil storage cavity (6), a constraint ring (7) being mounted on the connection block (8), the constraint ring (7) being located outside the conductive copper rod (5), and the constraint ring (7) being made of insulating ceramic.

3. A distribution transformer bushing according to claim 1, characterized in that: The clamping seal assembly comprises a clamping groove (9) provided on the end of the transformer bushing body (1), a bottom sealing groove (10) provided on the inner wall of the clamping groove (9), a clamping ring (11) fixedly mounted on the bottom side of the end block (4), and the clamping ring (11) clamped in the clamping groove (9).

4. A distribution transformer bushing according to claim 3, characterized in that: A clamping seal pad (12) is installed on the inner wall of the bottom sealing groove (10), an extrusion cavity (13) is provided in the clamping seal pad (12), and the clamping ring (11) is matched with the clamping seal pad (12).

5. A distribution transformer bushing according to claim 3, characterized in that: Two contact sealing rings (14) are installed on the top of the transformer bushing body (1), the two contact sealing rings (14) are located on both sides of the clamping ring (11), and the two contact sealing rings (14) are matched with one side of the end block (4).

6. A distribution transformer bushing according to claim 1, characterized in that: The fixing assembly comprises a lower fixing ring (16) fixedly mounted on the outside of the transformer bushing body (1), an upper fixing ring (15) fixedly mounted on the outside of the end block (4), and a plurality of connecting bolts (17) mounted between the upper fixing ring (15) and the lower fixing ring (16).

7. A distribution transformer bushing according to claim 1, characterized in that: A terminal block (3) is installed on the bottom side of the transformer bushing body (1), and a plurality of annular rings are arranged on the outside of the transformer bushing body (1).

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