CN211929272U

CN211929272U - High-voltage bushing of transformer

Info

Publication number: CN211929272U
Application number: CN202020582203.7U
Authority: CN
Inventors: 唐秧发
Original assignee: Hunan Hongye Transformer Co ltd
Current assignee: Hunan Hongye Transformer Co ltd
Priority date: 2020-04-19
Filing date: 2020-04-19
Publication date: 2020-11-13
Anticipated expiration: 2030-04-19

Abstract

The utility model relates to the technical field of transformers, in particular to a transformer high-voltage bushing, which comprises a bushing body, wherein the bottom end and the top end of the bushing body are respectively provided with an installation sleeve and a fixed sleeve, the bottom circumference of the installation sleeve is provided with an annular slot, the top circumference of the fixed sleeve is provided with an annular insertion pipe, the annular insertion pipe is in clearance fit with the annular slot, the top circumference of the fixed sleeve is provided with a plurality of locking columns, the bottom circumference of the installation sleeve is provided with a plurality of locking jacks, the locking columns are respectively inserted into the locking jacks, each locking jack is provided with a thread through hole communicated with the outside, the thread through holes are all directed to the central axis of the bushing body, the top circumference of the annular insertion pipe is provided with a first sealing ring, the installation is convenient and quick, the installation effect and progress are improved, and the complicated operation steps of flange connection in the, the use limitation is reduced, and the practicability is improved.

Description

High-voltage bushing of transformer

Technical Field

The utility model relates to a transformer technical field specifically is a transformer high-tension bushing.

Background

Transformer high-voltage bushing is the main insulator arrangement outside the transformer box, transformer winding's lead-out wire must pass insulator sleeve, make between the lead-out wire and between lead-out wire and the transformer shell insulating, play the effect of fixed lead-out wire simultaneously, it connects through the casing flange mostly to have between the transformer high-voltage bushing now, because its high-voltage bushing of some vary voltage needs to install in the high altitude, the high altitude construction in-process, constructor need carry more bolt and nut and be used for the installation between the flange, too many bolt and nut have increased constructor's heavy burden, there is the potential safety hazard, simultaneously in the installation, if carelessly drop bolt or nut and cause the quantity of bolt and nut not enough, and then influence installation effect and progress, there are a great deal of inconvenience in actual operation, the use limitation is higher, the practicality is lower.

SUMMERY OF THE UTILITY MODEL

The utility model provides a transformer high-tension bushing to prior art's not enough.

In order to achieve the above object, the utility model provides a following technical scheme: a transformer high-voltage bushing comprises a bushing body, wherein a mounting sleeve and a fixing sleeve are respectively arranged at the bottom end and the top end of the bushing body, an annular slot is formed in the bottom end circumference of the mounting sleeve, an annular insertion pipe is arranged at the top end circumference of the fixing sleeve in clearance fit with the annular slot, a plurality of locking columns are arranged at the top end circumference of the fixing sleeve, a plurality of locking jacks are arranged at the bottom end circumference of the mounting sleeve, the locking columns are respectively inserted into the locking jacks, each locking jack is provided with a threaded through hole communicated with the outside, the threaded through holes point to the central axis of the bushing body, a first sealing ring is arranged at the top end circumference of the annular insertion pipe, a second sealing ring is arranged inside the annular insertion pipe, the bottom end of the second sealing ring is concentrically connected with the top end of the fixing sleeve, and a first annular placing groove used for placing the first sealing ring is arranged on the top side wall of the annular slot, and the bottom of the mounting sleeve is provided with a second annular placing groove for placing a second sealing ring, a locking bolt is arranged in each threaded through hole in a threaded manner, a locking hole is arranged on one side, close to the threaded through hole, of each locking column, an inclined plane is arranged on the upper side wall of each locking hole, the inclination of each inclined plane is inclined towards the inner lower side from the outside of the locking hole, the lowest point of each inclined plane is lower than the highest point of the threaded through hole, and one end, pointing to the locking hole, of each locking bolt is provided with a fillet.

Preferably, the left end and the right end of the fixed sleeve are both connected with hanging rings.

Preferably, the outer surfaces of the fixed sleeve and the mounting sleeve are both provided with insulating coatings.

Preferably, the groove widths of the first annular placing groove and the second annular placing groove are larger than the widths of the first sealing ring and the second sealing ring.

Preferably, the bolt rod of each locking bolt is sleeved with a locking nut.

Compared with the prior art, the utility model discloses possess following beneficial effect:

according to the transformer high-voltage bushing, the fixing sleeves on two adjacent bushing bodies are conveniently inserted into the mounting sleeve of the other bushing body through the matching between the annular insertion tube and the annular slot, and the fixing sleeves can be aligned and inserted into the mounting sleeve through the matching between the locking rods and the locking insertion holes, so that the mounting position is convenient to limit; the locking bolt is directly rotated by using a wrench, so that the locking bolt is inserted into the locking hole, the locking insertion rod can be upwards extruded when the locking bolt is transversely inserted through the arrangement of the inclined surface of the locking hole, the fixing sleeve can be upwards moved to be better attached to the locking sleeve, and meanwhile, the first sealing ring and the second sealing ring can be extruded, so that the sealing use effect of the first sealing ring and the second sealing ring is improved; the fillet on the locking bolt can reduce the friction resistance between the locking bolt and the inclined plane, and the locking bolt can be rotated more quickly for installation and use; the first sealing ring and the second sealing ring can prevent rainwater, dust and the like in the external environment from entering the interior of the sleeve to cause danger, the double-layer protection of the first sealing ring and the second sealing ring has better sealing effect, and a large number of bolts or nuts do not need to be carried by constructors in the installation process, so that the construction carrying weight and danger factors are reduced; after two adjacent sleeve pipe bodies are aligned, the spanner is directly used for screwing the locking bolt, the installation is convenient and quick, the installation effect and the progress are improved, the complex operation steps of flange connection in the prior art are reduced, the use limitation is reduced, and the practicability is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of a partial enlarged structure at a in fig. 1 according to the present invention.

In the figure: 1. a sleeve body; 2. installing a sleeve; 3. fixing a sleeve; 4. an annular cannula; 5. a locking post; 6. a threaded through hole; 7. a first seal ring; 8. a second seal ring; 9. a first annular placing groove; 10. locking the bolt; 11. a locking hole; 12. a bevel; 13. rounding off; 14. a hoisting ring; 15. and (5) locking a nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b):

referring to fig. 1-2, a transformer high-voltage bushing includes a bushing body 1, a mounting sleeve 2 and a fixing sleeve 3 are respectively disposed at the bottom end and the top end of the bushing body 1, an annular insertion groove is disposed at the bottom end circumference of the mounting sleeve 2, an annular insertion pipe 4 is disposed at the top end circumference of the fixing sleeve 3, the annular insertion pipe 4 is in clearance fit with the annular insertion groove, a plurality of locking posts 5 are disposed at the top end circumference of the fixing sleeve 3, a plurality of locking insertion holes are disposed at the bottom end circumference of the mounting sleeve 2, the plurality of locking posts 5 are respectively inserted into the plurality of locking insertion holes, each locking insertion hole is provided with a threaded through hole 6 communicated with the outside, the plurality of threaded through holes 6 point to the central axis of the bushing body 1, a first sealing ring 7 is disposed at the top end circumference of the annular insertion pipe 4, and a second sealing ring 8 is disposed, the bottom end of the second sealing ring 8 is concentrically connected with the top end of the fixing sleeve 3, a first annular placing groove 9 for placing the first sealing ring 7 is arranged on the top side wall of the annular inserting groove, a second annular placing groove for placing the second sealing ring 8 is arranged at the bottom end of the mounting sleeve 2, a locking bolt 10 is arranged inside each threaded through hole 6 in a threaded manner, a locking hole 11 is arranged on one side, close to the threaded through hole 6, of each locking column 5, an inclined surface 12 is arranged on the upper side wall of each locking hole 11, the inclination of the inclined surface 12 is inclined from the outside to the inner lower side of each locking hole 11, the lowest point of each inclined surface 12 is lower than the highest point of each threaded through hole 6, a fillet 13 is arranged at one end, which points to the locking hole 11, of each locking bolt 10, and a fixing sleeve 3 on two adjacent sleeve bodies 1 is conveniently inserted into the mounting sleeve 2 of the other sleeve body 1 through the matching between the annular inserting pipe 4 and the annular, through the matching between a plurality of locking rods and a plurality of locking jacks, the fixing sleeve 3 can be inserted into the mounting sleeve 2 in an aligning way, so that the mounting position is convenient to limit, the locking bolt 10 can be directly rotated by using a wrench, the locking bolt 10 can be inserted into the locking hole 11, through the arrangement of the inclined plane 12 of the locking hole 11, when the locking bolt 10 is transversely inserted, the locking inserted rod can be upwards extruded, so that the fixing sleeve 3 can be upwards moved to be better attached to the locking sleeve, meanwhile, the first sealing ring 7 and the second sealing ring 8 can be extruded, the sealing use effect of the first sealing ring 7 and the second sealing ring 8 is improved, through the arrangement of the fillet 13 on the locking bolt 10, the friction resistance between the locking bolt 10 and the inclined plane 12 can be reduced, the locking bolt 10 can be more quickly installed and used, rainwater or dust and the like in the external environment can be prevented from entering the interior of the sleeve to cause danger through the first sealing ring 7 and the second sealing ring 8, through the double-deck protection of first sealing washer 7 and second sealing washer 8, sealed effect is better to in the installation, need not constructor and carry a large amount of bolts or nuts again, reduce the construction and carry weight and risk factor, after two adjacent sleeve pipe bodies 1 aim at, directly use the spanner screw locking bolt 10 can, simple to operate is quick, improve installation effect and progress, reduce flange joint's among the prior art complicated operating procedure, reduce and use the limitation, improve the practicality.

It should be further noted that the left end and the right end of the fixing sleeve 3 are both connected with a hanging ring 14, and through the arrangement of the hanging ring 14, the hoisting is facilitated in the installation process of the sleeve body 1, the phenomenon that the sling on the hoisting equipment is directly trapped on the sleeve body 1 without a hoisting point to influence the sleeve body 1 is reduced, the outer surfaces of the fixing sleeve 3 and the installation sleeve 2 are both provided with insulating coatings to improve the insulativity, the groove widths of the first annular placing groove 9 and the second annular placing groove are larger than the widths of the first sealing ring 7 and the second sealing ring 8, so that an extrusion space is reserved for the first sealing ring 7 and the second sealing ring 8, the practicability is improved, the bolt rod of each locking bolt 10 is sleeved with a locking nut 15, and after the locking bolt 10 rotates to a locking position, the locking nut 15 can be tightly attached to the outer wall of the installation sleeve 2 through rotating the locking nut 15, through the extrusion force between the bolt rod on the lock nut and the lock bolt 10 and the outer wall of the installation sleeve 2, the anti-loosening performance of the lock nut is improved, and the installation stability is improved.

In summary, the working principle and the working process of the transformer high-voltage bushing are that, when in use, the bushing body 1 at the lower side is firstly hoisted to the use position through the hoisting ring 14 and sleeved outside the outgoing line of the transformer winding, then hoisting the sleeve body 1 with the sleeve positioned at the upper side to the sleeve body 1 at the lower side and sleeving the sleeve body 1 outside the outgoing line of the transformer winding, inserting the annular insertion pipe 4 into the annular slot, aim at a plurality of locking posts 5 simultaneously, correspond a plurality of locking posts 5 respectively and insert inside a plurality of locking jacks, use the spanner evenly to locking hole 11 inside respectively a plurality of lock bolts 10 and lock to the clearance between installation cover 2 and the fixed cover 3 can not reduce again, at last rotatory lock nut 15 pastes tightly with the outer wall of installation cover 2, install 2 pipe bodies 1 of cover gradually with this mode and use can.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A transformer high-voltage bushing, includes bushing body (1), its characterized in that: the bottom and the top of the sleeve body (1) are respectively provided with an installation sleeve (2) and a fixed sleeve (3), the bottom circumference of the installation sleeve (2) is provided with an annular slot, the top circumference of the fixed sleeve (3) is provided with an annular insertion pipe (4), the annular insertion pipe (4) is in clearance fit with the annular slot, the top circumference of the fixed sleeve (3) is provided with a plurality of locking columns (5), the bottom circumference of the installation sleeve (2) is provided with a plurality of locking insertion holes, the locking columns (5) are respectively inserted into the locking insertion holes, each locking insertion hole is provided with a thread through hole (6) communicated with the outside, the thread through holes (6) point to the central axis of the sleeve body (1), the top circumference of the annular insertion pipe (4) is provided with a first sealing ring (7), and the inside of the annular insertion pipe (4) is provided with a second sealing ring (8), the bottom end of the second sealing ring (8) is concentrically connected with the top end of the fixed sleeve (3), a first annular placing groove (9) for placing a first sealing ring (7) is arranged on the top side wall of the annular slot, a second annular placing groove for placing a second sealing ring (8) is arranged at the bottom end of the mounting sleeve (2), a locking bolt (10) is arranged inside each threaded through hole (6) in a threaded manner, and one side of each locking column (5) close to the threaded through hole (6) is provided with a locking hole (11), and the upper side wall of each locking hole (11) is provided with an inclined surface (12), the inclination of the inclined surface (12) is inclined from the outside of the locking hole (11) to the inner lower side, the lowest point of the inclined surface (12) is lower than the highest point of the threaded through hole (6), and one end of each locking bolt (10) which points to the locking hole (11) is provided with a fillet (13).

2. A transformer bushing according to claim 1, characterized in that: the left end and the right end of the fixed sleeve (3) are both connected with a hanging ring (14).

3. A transformer bushing according to claim 2, characterized in that: the outer surfaces of the fixed sleeve (3) and the mounting sleeve (2) are both provided with insulating coatings.

4. A transformer bushing according to claim 3, characterized in that: the groove widths of the first annular placing groove (9) and the second annular placing groove are larger than the widths of the first sealing ring (7) and the second sealing ring (8).

5. A transformer bushing according to claim 4, characterized in that: and the bolt rod of each locking bolt (10) is sleeved with a locking nut (15).