CN219180316U - Flange plugging device for lifting seat of oil immersed transformer - Google Patents

Abstract

The utility model relates to a flange plugging device for an oil immersed transformer lifting seat, which comprises a flange surface plugging device and a plurality of bolt plugging devices; the bolt plugging device is arranged on the flange surface plugging device and is connected into a unified grounding whole through a grounding wire (5). The flange plugging device for the lifting seat of the oil-immersed transformer can conveniently and rapidly solve the problem of oil seepage of the lifting seat of the oil-immersed transformer, reduce the risk of moisture entering the transformer, improve the service life of the transformer, and prevent the construction period and economic benefit loss caused by oil discharge overhaul.

Description

Flange plugging device for lifting seat of oil immersed transformer

Technical Field

The utility model relates to the technical field of flange plugging of an oil immersed transformer lifting seat, in particular to a flange plugging device of an oil immersed transformer lifting seat.

Background

The oil immersed transformer lifting seat is arranged on the oil tank, is a structural member between the sleeve or the transformer and the transformer oil tank and is used for increasing the space height of the sleeve. When the capacitance of the transformer bushing increases to reach a specified value or the bushing is damaged, the bushing needs to be replaced, oil is discharged and the lifting seat is removed when the bushing is replaced, and the construction period is long and the risk is high. When the lifting seat is dismounted, the lifting seat is lifted to the oil tank and fastened with the flange of the oil tank by bolts, and according to the process requirement, every other hole is provided with a bolt, so that the seamless existence or the uniform and small gap state is ensured after the two flanges are pressed.

However, in the actual construction process, due to the fact that the construction period is short, the operation level of workers is inconsistent, the installation level of the lifting seat is not high, and the leakage problem easily occurs after the transformer is full of power. Meanwhile, leakage caused by sealing gasket failure is not few, but power plants generally do not allow unscheduled shutdown to deal with defects, or the shutdown maintenance period of the transformer during major repair is shorter, and oil discharge maintenance work of the transformer is not allowed.

Disclosure of Invention

Based on this, it is necessary to provide an oil immersed transformer rising seat flange plugging device to the problem of oil immersion of oil immersed transformer rising seat flange, can conveniently solve oil immersion of oil immersed transformer rising seat problem fast, reduce the risk that moisture got into the transformer, also improved the life of transformer simultaneously, stopped time limit for a project and economic benefits loss because of the oil extraction overhauls and lead to.

In order to achieve the above object, the present utility model provides the following technical solutions:

an oil immersed transformer lifting seat flange plugging device comprises a flange surface plugging device and a plurality of bolt plugging devices; the bolt plugging device is arranged on the flange surface plugging device and is connected into a unified grounding whole through a grounding wire.

Further, the flange face plugging device comprises a locking bolt, an upper hoop, a lower hoop, a hoop locking bolt and a grounding wire; the upper hoop and the lower hoop have the same structure; the upper anchor ear and the lower anchor ear are divided into a plurality of pieces on the flange surface, and each piece is connected through anchor ear locking bolts; the upper anchor ear and the lower anchor ear are connected through a locking bolt; and a sealing groove is arranged between the upper hoop and the lower hoop.

Further, the locking bolt is a U-shaped locking bolt, and the sealing groove is a rectangular sealing groove.

Further, the bolt plugging device comprises a sealing gland and a bolt head hoop; the bolt head anchor ear is tightly held on a flange fixing bolt of the flange of the lifting seat of the oil-immersed transformer, and the sealing gland is mounted on the bolt head anchor ear in a sealing way.

Further, the bolt head anchor ear comprises two half bolt head anchor ears, and the two half bolt head anchor ears are connected through bolt head anchor ear locking bolts to form a bolt head anchor ear.

Further, the sealing gland is an integrated sealing gland.

Further, a sealing ring is arranged on the inner side of the sealing gland, the sealing ring is arranged on the bolt head hoop after the sealing ring is smeared with plugging glue, and the sealing gland is in sealing connection with the bolt head hoop through the sealing ring.

Further, the bolt plugging device further comprises a compression bolt, the compression bolt is in threaded connection with the sealing gland, and one end of the compression bolt penetrates through the sealing gland to be in contact with the sealing ring.

Further, the sealing ring is an O-shaped sealing ring.

Further, the grounding wire is connected to the compression bolt and the anchor ear locking bolt.

The beneficial technical effects of the utility model are as follows:

the flange plugging device for the lifting seat of the oil immersed transformer is simple and convenient to install, good in plugging effect and long in time; the phenomenon of eddy current heating is prevented by adopting weak magnetic conduction materials such as a grounding wire, a hoop, a bolt and the like; the installation can be carried out without power failure, and the emergency defect of online treatment is overcome; the oil leakage problem of the lifting seat of the transformer can be conveniently and rapidly solved, the risk of moisture entering the transformer is reduced, the service life of the transformer is prolonged, the loss of construction period and economic benefit caused by oil discharge overhaul is avoided, the plugging work of the lifting seat of various oil-immersed transformers is satisfied, and the flange surface and bolts can be plugged.

Drawings

Fig. 1 is a schematic structural diagram of a flange plugging device of an oil immersed transformer lifting seat;

FIG. 2 is a schematic structural view of a bolt plugging device;

FIG. 3 is a schematic view of a bolt head anchor ear structure;

FIG. 4 is a schematic view of an O-ring seal;

FIG. 5 is a schematic diagram showing a part of the flange plugging device for the lifting seat of the oil immersed transformer;

fig. 6 is a schematic diagram of a flange structure of an oil immersed transformer lifting seat.

Fig. 7 is a general schematic diagram of the flange plugging device for the lifting seat of the oil immersed transformer.

In the figure, 1-locking bolt; 2-upper anchor ear; 3-lower anchor ear; 4-hoop locking bolts; 5-grounding wire; 6-a bolt plugging device; 7-a compression bolt; 8-sealing gland; 9-a bolt head hoop; 10-locking bolts by using a bolt head hoop; 11-a sealing ring; 12-flange surface fixing bolts; 13-sealing the groove; 14-transformer bushing; 15-a transformer lifting seat; 16-upper flange surface; 17-lower flange face.

Detailed Description

In the description of the present utility model, it should be understood that the terms "left", "right", "above", "below", "outside", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The utility model is described in further detail below with reference to the drawings and examples.

Example 1

Referring to fig. 1, the embodiment provides a flange plugging device for an oil immersed transformer lifting seat, which comprises a flange surface plugging device and a plurality of bolt plugging devices; the bolt plugging device is arranged on the flange surface plugging device and is connected into a unified grounding whole through a grounding wire 5.

The flange surface plugging device comprises a U-shaped locking bolt 1, an upper anchor ear 2, a lower anchor ear 3, an anchor ear locking bolt 4 and a grounding wire 5; the upper hoop 2 and the lower hoop 3 have the same structure; the upper anchor ear 2 and the lower anchor ear 3 are divided into six blocks on the flange surface, each block corresponds to 60 degrees of circumference, each block is connected through the anchor ear locking bolt 4, the adjustability is strong, and the flange surface unevenness condition can be applied; the upper anchor ear 2 and the lower anchor ear 3 are connected through a U-shaped locking bolt 1; the middle of the upper hoop 2 and the lower hoop 3 is provided with a rectangular sealing groove 13, so that glue injection or sealing gasket installation is facilitated, and the flange surface is plugged.

The upper anchor ear 2 is combined with silica gel to prevent leakage from the upward direction, the lower anchor ear 3 is combined with silica gel to prevent leakage from the downward direction, the upper anchor ear 2 and the lower anchor ear 3 are locked by the anchor ear U-shaped locking bolt 1 to further prevent leakage from the outward direction, and the installation sealing gasket or the glue application increases the resistance of leakage in the rectangular sealing groove 13 designed by the upper anchor ear 2 and the lower anchor ear 3 and also plays a role in plugging leakage.

Referring to fig. 2-5, the bolt plugging device comprises a compression bolt 7, an integrated sealing gland 8, a bolt head hoop 9, a bolt head hoop locking bolt 10 and an O-ring 11.

The bolt head anchor ear 9 comprises two half bolt head anchor ears, and the two half bolt head anchor ears are connected through a bolt head anchor ear locking bolt to form a bolt head anchor ear; the bolt head anchor ear 9 is tightly held on a flange fixing bolt 12 of the flange of the lifting seat of the oil-immersed transformer, and the integrated sealing gland 8 is arranged on the bolt head anchor ear 9; the O-shaped sealing ring 11 is arranged on the inner side of the integrated sealing gland 8, and is arranged on the bolt head hoop 9 after the plugging glue is smeared, and the integrated sealing gland 8 is in sealing connection with the bolt head hoop 9 through the O-shaped sealing ring 11.

The compression bolt 7 is in threaded connection with the integrated sealing gland 8, and one end of the compression bolt 7 penetrates through the integrated sealing gland 8 to be in contact with the O-shaped sealing ring 11; by screwing the compression bolt 7, the O-shaped sealing ring and the plugging glue are tightly pressed by the integrated sealing gland, so that the transformer oil leaking from the flange surface fixing bolt is prevented from leaking upwards and outwards, and the large pressure of the glue can be ensured by the compression bolt 7 on the integrated sealing gland 8, so that the transformer oil is prevented from leaking.

The grounding wire 5 is connected to the compression bolt 7 and the anchor ear locking bolt 4.

Referring to fig. 6-7, the oil immersed transformer lifting seat flange plugging device is used for plugging the oil immersed transformer lifting seat flange, and comprises the following steps:

1. cleaning the flange surface of the lifting seat of the oil immersed transformer, and plugging the oil seepage part of the flange by using plugging glue;

2. mounting the upper anchor ear 2 to the upper flange face 16;

3. installing a hoop locking bolt 4;

4. mounting the lower anchor ear 3 to the lower flange face 17;

5. installing a hoop locking bolt 4;

6. installing a U-shaped anchor ear locking bolt 1;

7. cleaning up flange fixing bolts 12 of a flange of an oil immersed transformer lifting seat, and plugging an oil seepage part by using plugging glue;

8. installing a bolt head hoop 9 to a flange fixing bolt 12 of the flange of the lifting seat of the oil-immersed transformer;

9. the mounting bolt head anchor ear locks the bolt 10;

10. installing an O-shaped sealing ring 11;

11. installing an integrated sealing gland 8;

12. the mounting bolt head anchor ear locks the bolt 7;

13. a ground wire 5 is installed.

The flange plugging device for the oil immersed transformer lifting seat is applied to plugging work of a lifting seat of a No. 1 main transformer A, C phase of a secondary operation factory, and has the advantages of good effect, short construction period and convenience in installation, and the part is not leaked at present.

The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. The flange plugging device for the lifting seat of the oil immersed transformer is characterized by comprising a flange surface plugging device and a plurality of bolt plugging devices; the bolt plugging device is arranged on the flange surface plugging device and is connected into a unified grounding whole through a grounding wire (5).

2. The flange plugging device for the lifting seat of the oil immersed transformer according to claim 1, wherein the flange surface plugging device comprises a locking bolt (1), an upper hoop (2), a lower hoop (3), a hoop locking bolt (4) and a grounding wire (5); the upper anchor ear (2) and the lower anchor ear (3) have the same structure; the upper anchor ear (2) and the lower anchor ear (3) are divided into a plurality of blocks on the flange surface, and each block is connected through anchor ear locking bolts (4); the upper anchor ear (2) and the lower anchor ear (3) are connected through a locking bolt (1); and a sealing groove (13) is arranged between the upper hoop (2) and the lower hoop (3).

3. The flange plugging device for the lifting seat of the oil immersed transformer according to claim 2, wherein the locking bolt (1) is a U-shaped locking bolt, and the sealing groove (13) is a rectangular sealing groove.

4. The oil immersed transformer lifting seat flange plugging device according to claim 2, wherein the bolt plugging device comprises a sealing gland (8) and a bolt head hoop (9); the bolt head anchor ear (9) is tightly held on a flange fixing bolt (12) of the flange of the lifting seat of the oil-immersed transformer, and the sealing gland (8) is mounted on the bolt head anchor ear (9) in a sealing mode.

5. The flange plugging device for an oil immersed transformer lifting seat according to claim 4, wherein the bolt head hoop (9) comprises two half bolt head hoops, and the two half bolt head hoops are connected through a bolt head hoop locking bolt (10) to form one bolt head hoop (9).

6. The oil immersed transformer lifting seat flange plugging device according to claim 4, wherein the sealing gland (8) is an integrated sealing gland.

7. The flange plugging device for the lifting seat of the oil immersed transformer according to claim 4, wherein a sealing ring (11) is arranged on the inner side of the sealing gland (8), the sealing ring (11) is arranged on the bolt head hoop (9) after the plugging glue is smeared, and the sealing gland (8) is in sealing connection with the bolt head hoop (9) through the sealing ring (11).

8. The flange plugging device for the lifting seat of the oil immersed transformer according to claim 4, wherein the bolt plugging device further comprises a compression bolt (7), the compression bolt (7) is in threaded connection with the sealing gland (8), and one end of the compression bolt (7) passes through the sealing gland (8) to be in contact with the sealing ring (11).

9. The flange plugging device for the lifting seat of the oil immersed transformer according to claim 8, wherein the sealing ring (11) is an O-shaped sealing ring.

10. The flange plugging device for the lifting seat of the oil immersed transformer according to claim 8, wherein the grounding wire (5) is connected to the compression bolt (7) and the anchor ear locking bolt (4).

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