CN220569515U

CN220569515U - Transformer respirator

Info

Publication number: CN220569515U
Application number: CN202321444743.9U
Authority: CN
Inventors: 石运东; 王爽; 刘婷; 田野; 杜伟伟; 唐全; 尹春鹏; 于德; 吕明; 周勇君
Original assignee: State Grid Corp of China SGCC; Chengde Power Supply Co of State Grid Jibei Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; Chengde Power Supply Co of State Grid Jibei Electric Power Co Ltd
Priority date: 2023-06-07
Filing date: 2023-06-07
Publication date: 2024-03-08
Anticipated expiration: 2033-06-07

Abstract

The utility model relates to a transformer breather, which belongs to the technical field of transformers and comprises a main breather, wherein the main breather comprises a silica gel tank, an oil cup is arranged at the bottom of the silica gel tank, a through bolt is arranged in the silica gel tank, the main breather is directly connected with a transformer breathing tube, the main breather also comprises a top fixing ring arranged at the upper end of the silica gel tank, the top fixing ring is connected with a breathing tube main pipeline through a flange, a breathing tube standby pipeline is integrally communicated with the breathing tube main pipeline, the upper end of the through bolt passes through the top fixing ring and is tightly pressed by a nut, a first silica gel outlet is formed in the top fixing ring, a second silica gel outlet is formed in the bottom fixing ring, the bottom fixing ring and the oil cup flange are arranged at the lower end of the silica gel tank, the lower end of the through bolt passes through the through bolt hole, the upper end of the oil cup is clamped on the oil cup flange, a gas channel ring is arranged in the oil cup, and the lower end of the through bolt passes through the bottom end of the gas channel ring. The transformer oil and the silica gel are more convenient and safer to replace, and the time and the labor are saved.

Description

Transformer respirator

Technical Field

The utility model relates to a transformer respirator, and belongs to the technical field of transformers.

Background

The transformer breather is also called as a transformer breather, is an accessory device of a high-voltage transformer, is arranged at the tail end of a pipeline for communicating the oil conservator with air, and when the temperature of the transformer rises, the transformer oil in an oil tank expands, the oil level in the oil conservator rises along with the expansion, and the gas in a capsule in the oil conservator is discharged through the breather; conversely, when the temperature of the transformer is reduced, the oil level in the oil conservator is reduced, and the transformer sucks gas through the respirator, so that the balance of the internal pressure and the external pressure of the transformer is ensured.

In the prior art, the color-changing silica gel is arranged in the respirator, and when the color change of the silica gel in the respirator is more than 2/3 of the color change due to moisture, the silica gel needs to be replaced. The bottom of the breather is provided with an oil collecting cup and is filled with transformer oil, the bottom oil cup is marked with an upper limit mark and a lower limit mark, and when the oil level in the cup exceeds the limit mark or the transformer oil becomes turbid, the transformer oil in the oil cup needs to be timely replenished or replaced.

The existing transformer oil replacement flow in the oil collecting cup is as follows: the main work of removing the oil collecting cup, replacing transformer oil in the oil collecting cup and reinstalling the oil collecting cup is that no special tool exists in the process at present, and the on-site common method comprises the following steps: the screw driver is inserted into the air hole at the bottom of the respirator, and a hammer is used for knocking the bottom of the screw driver, so that the oil cup bearing tray is unscrewed or screwed. The method has the following disadvantages: 1) The disassembly difficulty is high: the respirator runs for a long time, the fastening threads of the oil cup supporting tray accumulate dirt, the direction of the screw driver is difficult to accurately grasp, the force application is difficult to control, the oil cup of the respirator is difficult to disassemble and sometimes rotates still; 2) Damage to the oil cup: the screw driver is used for brute force disassembly, deformation and damage of air holes at the bottom of the oil cup supporting plate are caused, in addition, oil stains exist on the outer wall of the oil cup, and the oil cup is often broken due to the fact that the oil cup is taken unstably in the disassembly process.

The existing silica gel replacement flow is as follows: removing gas protection of a transformer, removing an oil collecting cup, removing the whole respirator, fastening a breathing pipe orifice by a plastic bag, disassembling the respirator, replacing silica gel, assembling the respirator, disassembling the plastic bag, installing the respirator, installing the oil cup and putting into gas protection. The following disadvantages exist: 1) The gas protection of the transformer is relieved, so that the main transformer loses non-electric quantity protection within a period of time and operates with lower reliability; 2) The mouth of the breathing tube is fastened by a plastic bag, and the method cannot ensure complete isolation of external moisture; 3) In the process, the whole respirator needs to be disassembled and disassembled, which is time-consuming and labor-consuming; 4) From operation and maintenance personnel find that the silica gel discolours and exceeds the warning value, need pass: the silica gel replacement work can be performed after a series of approval flows such as scheduling, planning, gas protection exit and the like are reported, and the time is long.

Disclosure of Invention

The utility model aims to provide a transformer respirator aiming at the technical problems that the replacement of transformer oil and silica gel is time-consuming and labor-consuming.

The utility model is realized by the following technical scheme:

the transformer respirator comprises a main respirator, wherein the main respirator comprises a silica gel tank, an oil cup is arranged at the bottom of the silica gel tank, a penetrating bolt is arranged in the silica gel tank, the main respirator is directly connected with a transformer breathing tube, the main respirator also comprises a top fixing ring arranged at the upper end of the silica gel tank, the top fixing ring is connected with a breathing tube main pipeline through a flange, the breathing tube main pipeline is connected with the transformer breathing tube, and a breathing tube standby pipeline is integrally communicated with the breathing tube main pipeline;

the upper end of the through bolt passes through the top fixing ring and is compressed by adopting a nut, and the top fixing ring is provided with a first silica gel outlet;

the bottom fixing ring and the oil cup flange are arranged at the lower end of the silica gel tank, the bottom fixing ring is provided with a through bolt hole, a silica gel outlet II and a vent hole I, and the lower end of the through bolt penetrates through the through bolt hole;

the upper end of the oil cup is clamped on the flange of the oil cup, two handles are fixedly arranged on the oil cup, a vent hole II communicated with the vent hole I is formed in the flange of the oil cup, a gas channel ring is arranged in the oil cup, and threads at the lower end of the penetrating bolt penetrate through the bottom end of the gas channel ring.

According to the utility model, through the design of the silica gel inlet and outlet of the respirator, the respirator is not required to be integrally dismantled when the silica gel is replaced, the design of the flange handle of the oil cup is adopted, the problem of difficult disassembly of the oil cup is solved, the working strength is reduced, the working efficiency is improved, the design of the three-way connecting device is changed, and the original connecting mode that the transformer breathing tube is directly connected with the respirator is changed, so that the gas protection is not required to be relieved when the silica gel is replaced. The transformer oil and the silica gel are more convenient and safer to replace, and the time and the labor are saved.

The utility model further improves that the main pipeline of the breathing tube is connected with the transformer breathing tube through the connecting ring, a sealing rubber cushion is arranged between the lower end of the transformer breathing tube and the upper end of the connecting ring, the tail end of the transformer breathing tube is provided with a main pipeline plugging bolt, and the spare respirator connecting port at the tail end of the spare pipeline of the breathing tube is provided with a spare pipeline plugging bolt. The bolt is adopted to detachably plug the tail ends of the main pipeline and the standby pipeline, and the operation is convenient.

The utility model further improves that the main pipeline of the breathing tube is provided with a main respirator on-off valve, and the standby pipeline of the breathing tube is provided with a standby respirator on-off valve. The on-off valve is used for realizing the on-off of the main pipeline of the breathing tube and the standby pipeline of the breathing tube, thereby being convenient to operate.

The utility model further improves that the upper end face of the bottom fixing ring is provided with a rubber pad placement annular groove, a sealing foot pad is placed in the rubber pad placement annular groove, and the lower end of the silica gel tank is clamped in the rubber pad placement annular groove. The connection tightness between the silica gel tank and the bottom fixing ring is more reliable.

The utility model further improves that the inner wall of the central hole of the oil cup flange is provided with an oil cup supporting annular groove, the upper end of the oil cup is provided with a turned edge, the oil cup extends into the central hole from the upper part of the oil cup flange, and the turned edge is clamped in the oil cup supporting annular groove. The oil cup is connected with the oil cup flange by adopting the structural form, and the structure is simple, and the connection is convenient and reliable.

The utility model further improves that a first sealing bolt is arranged in the first silica gel outlet, and a second sealing bolt is arranged in the second silica gel outlet.

Compared with the prior art, the utility model has the following beneficial effects:

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of an embodiment of the present utility model.

Fig. 2 is a schematic diagram of an exploded structure of an embodiment of the present utility model.

Fig. 3 is a schematic structural view of an oil cup flange according to an embodiment of the present utility model.

FIG. 4 is a schematic view of the structure of the bottom retainer ring according to the embodiment of the present utility model

In the figure: 1. an oil cup; 2. flanging; 3. a gas channel ring; 4. an oil cup flange; 5. a handle; 6. a bottom fixing ring; 7. a silica gel tank; 8. a through bolt; 9. a top retaining ring; 10. a first flange plate; 11. a first silica gel outlet; 12. a first sealing bolt; 13. a second flange plate; 14. a main respiratory tube pipe; 15. a main respirator on-off valve; 16. a connecting ring; 17. a respiratory tube standby pipeline; 18. a standby respirator on-off valve; 19. a spare respirator connection port; 20. plugging bolts by using a standby pipeline; 21. a transformer breathing tube; 22. sealing rubber cushion; 23. plugging bolts for the main pipeline; 24. the rubber pad is provided with an annular groove; 25. penetrating the bolt hole; 26. a second silica gel outlet; 27. a second sealing bolt; 28. a first vent hole; 29. an external thread portion; 30. the oil cup supports the annular groove; 31. and a vent hole II.

Detailed Description

The following detailed description of the utility model refers to the accompanying drawings.

Embodiment one:

the transformer respirator as shown in fig. 1 to 4 comprises a main respirator, wherein the main respirator comprises a silica gel tank 7, an oil cup 1 is arranged at the bottom of the silica gel tank 7, a penetrating bolt 8 is arranged in the silica gel tank 7, the main respirator is directly connected with a transformer breathing tube 21, the main respirator also comprises a top fixing ring 9 which is arranged at the upper end of the silica gel tank 7, the top fixing ring 9 is connected with a breathing tube main pipeline 14 through a flange, the breathing tube main pipeline 14 is connected with the transformer breathing tube 21 through a connecting ring 16, a sealing rubber cushion 22 is arranged between the lower end of the transformer breathing tube 21 and the upper end of the connecting ring 16, a main pipeline plugging bolt 23 is arranged at the tail end of the transformer breathing tube 21, a breathing tube standby pipeline 17 is integrally communicated with the breathing tube main pipeline 14, and a standby pipeline plugging bolt 20 is arranged on a standby connecting port 19 at the tail end of the breathing tube standby pipeline 17;

the upper end of the through bolt 8 passes through the top fixing ring 9 and is compressed by adopting a nut, and the top fixing ring 9 is provided with a silica gel outlet I11;

the bottom fixing ring 6 and the oil cup flange 4 are arranged at the lower end of the silica gel tank 7, the bottom fixing ring 6 is provided with a through bolt hole 25, a silica gel outlet II 26 and a vent hole I28, and the lower end of the through bolt 8 passes through the through bolt hole 25;

the upper end of the oil cup 1 is clamped on the oil cup flange 4, two handles 5 are fixedly arranged on the oil cup 1, two vent holes 31 communicated with the first vent hole 28 are formed in the oil cup flange 4, a gas channel ring 3 is arranged in the oil cup 1, and threads at the lower end of the penetrating bolt 8 penetrate through the bottom end of the gas channel ring 3.

Embodiment two:

The upper end face of the bottom fixing ring 6 is provided with a rubber pad placement annular groove 24, a sealing foot pad 22 is placed in the rubber pad placement annular groove 24, and the lower end of the silica gel tank 7 is clamped in the rubber pad placement annular groove 24.

The inner wall of the central hole of the oil cup flange 4 is provided with an oil cup supporting annular groove 30, the upper end of the oil cup 1 is provided with a flange 2, the oil cup 1 extends into the central hole from the upper part of the oil cup flange 4, and the flange 2 is clamped in the oil cup supporting annular groove 30.

A first sealing bolt 12 is arranged in the first silica gel outlet 11, and a second sealing bolt 27 is arranged in the second silica gel outlet 26.

Working principle:

the utility model changes the traditional maintenance method of the transformer breather, and the process of simultaneously replacing the internal silica gel and the transformer oil in the oil cup is as follows in sequence: taking down a blocking bolt of a standby pipeline, connecting the standby respirator and the standby pipeline of the respirator through a plug-in type interface, cutting an on-off valve to a main-break-make-up state, observing that bubbles are emitted from an oil cup at the bottom of the standby respirator, rotating a flange handle, taking down the oil cup of the respirator and replacing transformer oil, taking down a blocking bolt of a silica gel outlet, enabling silica gel particles to flow out under the action of gravity, installing the blocking bolt of the silica gel outlet, taking down the blocking bolt of the silica gel inlet, loading the silica gel through a funnel, installing the blocking bolt of the silica gel inlet, rotating the flange handle, installing the oil cup of the respirator, observing that breathing is normal, cutting the on-off valve to the main-break-make-up state, observing that bubbles are emitted from the oil cup at the bottom of the main respirator, taking down the standby respirator, and screwing down the blocking bolt of the standby pipeline. Has the following advantages:

firstly, silica gel import, export design realize exempting from to dismantle the respirator and carry out silica gel and glue the change, avoid changing the foundation and glue in-process because of gasket and respirator adhesion arouse dismantlement difficulty, the broken scheduling risk of respirator damage, shorten engineering time, improve silica gel change efficiency.

Secondly, the design of oil cup flange handle replaces the use screwdriver sled pine oil cup respirator oil cup, need not to need to resort to outside instrument again, can steadily hold the oil cup, prevent to overhaul in-process misoperation and lead to the oil cup to drop the damage, and the operation process is laborsaving, swift, has improved respirator maintenance efficiency and fail safe nature greatly, provides powerful assurance for the safe and stable operation of electric wire netting.

Thirdly, the design of the three-way connecting device replaces the mode that a plastic bag is used for fastening a breathing pipe orifice in the original process by switching the plugging valve, so that good tightness in the process of replacing silica gel is ensured. Meanwhile, the design ensures that the gas protection is not required to be removed in the silica gel replacement work, and the power grid risk brought by accidental events such as faults in the transformer in the silica gel replacement process is avoided.

In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts between the embodiments are only required to be referred to each other.

The terms "upper", "lower", "outside", "inside", and the like in the description and in the claims of the present utility model and in the above drawings, if any, are used for distinguishing between relative relationships in position and not necessarily for giving qualitative sense. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a transformer respirator, including main respirator, main respirator includes silica gel jar (7), oil cup (1) is installed to silica gel jar (7) bottom, inside being equipped with of silica gel jar (7) is worn through heart bolt (8), main respirator and transformer breathing tube (21) direct link to each other, a serial communication port, main respirator still includes top solid fixed ring (9) of installing in silica gel jar (7) upper end, top solid fixed ring (9) has breathing tube trunk line (14) through flange joint, breathing tube trunk line (14) link to each other with transformer breathing tube (21), integrative intercommunication is equipped with breathing tube spare pipeline (17) on breathing tube trunk line (14);

the upper end of the through bolt (8) passes through the top fixing ring (9) and is pressed by a nut, and a silica gel outlet I (11) is formed in the top fixing ring (9);

the bottom fixing ring (6) and the oil cup flange (4) are arranged at the lower end of the silica gel tank (7), the bottom fixing ring (6) is provided with a through bolt hole (25), a silica gel outlet II (26) and a vent hole I (28), and the lower end of the through bolt (8) passes through the through bolt hole (25);

the upper end of the oil cup (1) is clamped on the oil cup flange (4), two handles (5) are fixedly arranged on the oil cup (1), two vent holes (31) communicated with the first vent holes (28) are formed in the oil cup flange (4), a gas channel ring (3) is arranged in the oil cup (1), and threads at the lower end of the penetrating bolt (8) penetrate through the bottom end of the gas channel ring (3).

2. The transformer respirator of claim 1, wherein the main respiratory tube pipe (14) is connected with the transformer respiratory tube (21) through a connecting ring (16), a sealing rubber pad (22) is arranged between the lower end of the transformer respiratory tube (21) and the upper end of the connecting ring (16), a main pipeline plugging bolt (23) is arranged at the tail end of the transformer respiratory tube (21), and a standby pipeline plugging bolt (20) is arranged on a standby respirator connecting port (19) at the tail end of a respiratory tube standby pipeline (17).

3. A transformer respirator according to claim 1 or 2, characterized in that the main breathing tube pipe (14) is provided with a main respirator on-off valve (15), and the spare breathing tube pipe (17) is provided with a spare respirator on-off valve (18).

4. The transformer respirator of claim 1, wherein the upper end surface of the bottom fixing ring (6) is provided with a rubber pad placement annular groove (24), a sealing foot pad (22) is placed in the rubber pad placement annular groove (24), and the lower end of the silica gel tank (7) is clamped in the rubber pad placement annular groove (24).

5. The transformer breather of claim 1, wherein the inner wall of the central hole of the oil cup flange (4) is provided with an oil cup supporting annular groove (30), the upper end of the oil cup (1) is provided with a flange (2), the oil cup (1) extends into the central hole from above the oil cup flange (4), and the flange (2) is clamped in the oil cup supporting annular groove (30).

6. The transformer respirator of claim 1, wherein the first sealing bolt (12) is installed in the first silica gel outlet (11), and the second sealing bolt (27) is installed in the second silica gel outlet (26).