Transformer breather

By installing silicone feed and discharge pipes on the transformer breather, combined with sealing components and guiding structures, the problem of moisture and impurities entering due to the complex disassembly of traditional breathers is solved. This achieves easy replacement of silicone and good sealing, extending the service life of transformer oil and improving equipment safety.

CN224501622UActive Publication Date: 2026-07-14INNER MONGOLIA ELECTRIC POWER (GRP) CO LTD ORDOS POWER SUPPLY BRANCH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
INNER MONGOLIA ELECTRIC POWER (GRP) CO LTD ORDOS POWER SUPPLY BRANCH
Filing Date
2025-04-14
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Traditional transformer breathers require cumbersome disassembly steps when replacing silica gel, which can easily lead to moisture and impurities entering the transformer oil, affecting insulation performance and equipment safety.

Method used

A transformer breather was designed, which enables the replacement of silicone without disassembly by installing silicone inlet and outlet pipes on the silicone tank. The sealing components and guiding structure ensure airtightness and prevent moisture and impurities from entering.

Benefits of technology

It simplifies the silica gel replacement process, prevents transformer oil from getting damp and contaminated, extends the oil's service life, reduces the risk of mechanical damage and decreased sealing performance, and improves equipment safety and performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a transformer breathing apparatus in the technical field of transformer accessories, including silica gel jar, the top one side of silica gel jar is installed silica gel feed pipe, the one side outer wall below of silica gel jar is installed silica gel discharge pipe, the inner wall of silica gel discharge pipe all is seted up L type guide slot, the inner wall one side of L type guide slot is seted up the positioning hole, its structure is reasonable, the utility model discloses a top one side of silica gel jar installs silica gel feed pipe, and the one side outer wall below installs silica gel discharge pipe, according to the silica gel in the silica gel jar inside replaces or cleans up later period, only needs to adopt silica gel discharge pipe to adopt silica gel discharge treatment, during need not to dismantle the treatment of silica gel jar and transformer, utilize the respirator of exempting from to dismantle can better prevent moisture and impurity and enter transformer oil, has reduced the moisture and pollution of transformer oil, has reduced the aging speed of oil, and then has prolonged the service life of transformer oil.
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Description

Technical Field

[0001] This utility model relates to the field of transformer accessories technology, specifically a transformer breather. Background Technology

[0002] A transformer breather is a device used in transformers. Its main function is to regulate and control the gas exchange inside and outside the oil tank, preventing moisture and contaminants from entering the transformer's interior, thereby protecting the transformer's insulation system and ensuring normal operation. Traditional transformer breathers require cumbersome disassembly steps when replacing silica gel, including using rust remover, loosening multiple screws, and removing the oil tank, which consumes a lot of time and manpower. Furthermore, replacing the silica gel in a traditional transformer breather requires removing the breather from the transformer. During this process, improper operation or inadequate sealing can easily allow moisture and impurities from the air to enter the transformer oil, causing the transformer oil to become damp, reducing its insulation performance, and potentially leading to internal transformer faults. This affects the safe and stable operation of the power grid, reduces the effectiveness of the transformer breather, and indirectly impacts the transformer's safety.

[0003] Therefore, it is necessary to develop transformer breathers. Utility Model Content

[0004] The purpose of this invention is to provide a transformer breather to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a transformer breather, including a silicone tank, a silicone feed pipe installed on one side of the top of the silicone tank, a silicone discharge pipe installed on the lower side of the outer wall of one side of the silicone tank, and an L-shaped guide groove provided on the inner wall of the silicone discharge pipe, with a positioning hole provided on one side of the inner wall of the L-shaped guide groove.

[0006] A sealing assembly is installed at one end of the silicone discharge tube. The sealing assembly includes a sealing cover B, and a sealing plug is installed on one side of the inner side of the sealing cover B.

[0007] Preferably, a mounting flange is installed at the center of the top of the silicone container, an oil collection cup is installed at the bottom of the silicone container, and a viewing window is installed on the upper part of one side of the outer wall of the silicone container.

[0008] Preferably, a sealing cap A is installed at the top of the silicone feed tube, and the interior of the sealing cap A is threadedly connected to the outer wall of the silicone feed tube.

[0009] Preferably, the outer wall of the sealing plug is slidably connected to the inside of the silicone discharge tube, and a guide seat is provided on the outer wall of the sealing plug.

[0010] Preferably, the outer wall of the guide seat is slidably connected to the inner wall of the L-shaped guide groove, and the guide seat has an installation groove inside.

[0011] Preferably, a guide plate is installed inside the mounting groove, and a guide post is slidably connected inside the guide plate, with a limit ring installed at one end of the guide post.

[0012] Preferably, a positioning pin is installed at the other end of the guide post, and the outer wall of the positioning pin is slidably connected to the inside of the positioning hole.

[0013] Preferably, a spring is provided on the outer wall of the guide post, and an anti-slip sleeve is slidably connected to one side of the outer wall of the sealing cover B.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By installing a silicone feed pipe on one side of the top of the silicone tank and a silicone discharge pipe on the lower outer wall of the other side, when replacing or cleaning the silicone inside the tank, the silicone can be discharged simply through the discharge pipe without disassembling the silicone tank from the transformer. This non-disassembly breather effectively prevents moisture and impurities from entering the transformer oil, reducing moisture and contamination, slowing down oil aging, and extending the service life of the transformer oil. It also reduces potential mechanical damage and sealing performance degradation to the transformer caused by the disassembly and installation of the breather, thus extending the overall lifespan of the transformer, reducing equipment replacement costs, and ultimately improving the performance of the transformer breather, indirectly enhancing transformer safety. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a magnified schematic diagram of a selected portion of the structure provided by this utility model;

[0018] Figure 3 Provided by this utility model Figure 2 Enlarged view of the structure at point A in the image;

[0019] Figure 4 A partial three-dimensional structural schematic diagram of this utility model.

[0020] In the diagram: 1. Silicone container; 101. Mounting flange; 102. Oil collection cup; 103. Viewing window; 2. Silicone feed pipe; 201. Sealing cap A; 3. Silicone discharge pipe; 301. L-shaped guide groove; 302. Positioning hole; 4. Sealing cap B; 401. Sealing plug; 402. Guide seat; 403. Mounting groove; 404. Guide plate; 405. Guide post; 406. Limiting ring; 407. Positioning pin; 408. Spring; 409. Anti-slip sleeve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides the following technical solution: a transformer breather (see attached image). Figures 1-4 The system includes a silicone tank 1, with an installation flange 101 mounted at the center of the top of the silicone tank 1, an oil collecting cup 102 mounted at the bottom of the silicone tank 1, a viewing window 103 mounted on the upper part of one side of the outer wall of the silicone tank 1, a silicone feed pipe 2 mounted on the top side of the silicone tank 1, a sealing cap A201 mounted on the top of the silicone feed pipe 2, the inside of the sealing cap A201 being threadedly connected to the outer wall of the silicone feed pipe 2, and a silicone discharge pipe 3 mounted on the lower part of one side of the outer wall of the silicone tank 1. Each inner wall of the silicone discharge pipe 3 has an L-shaped guide groove 301, and one side of the inner wall of the L-shaped guide groove 301 has a positioning hole 302. The silicone tank 1 on the transformer breather is mounted on the transformer via the installation flange, and silicone is injected into the silicone feed pipe 2 on the silicone tank 1, so that the sealing cap A201 is screwed onto the top of the silicone feed pipe 2 via a threaded connection. The sealing cap A201 seals the silicone feed pipe 2 to prevent air from entering the silicone tank 1. By installing the silicone feed pipe 2 on one side of the top of the silicone tank 1 and the silicone discharge pipe 3 on the lower side of the outer wall, when the silicone inside the silicone tank 1 needs to be replaced or cleaned later, the silicone can be discharged through the silicone discharge pipe 3. During this process, there is no need to disassemble the silicone tank 1 from the transformer. Using a non-disassembly breather can better prevent moisture and impurities from entering the transformer oil, reducing moisture and contamination of the transformer oil, slowing down the aging rate of the oil, and thus extending the service life of the transformer oil. At the same time, it also reduces the mechanical damage and sealing performance degradation that may be caused to the transformer during the disassembly and installation of the breather, which is conducive to extending the service life of the overall transformer equipment and reducing equipment replacement costs.

[0023] A sealing assembly is installed at one end of the silicone discharge tube 3. The sealing assembly includes a sealing cover B4, and a sealing plug 401 is installed on one side of the inner side of the sealing cover B4. The outer wall of the sealing plug 401 is slidably connected to the inside of the silicone discharge tube 3. A guide seat 402 is provided on the outer wall of the sealing plug 401. The outer wall of the guide seat 402 is slidably connected to the inner wall of the L-shaped guide groove 301. An installation groove 403 is opened inside the guide seat 402. A guide plate 404 is installed inside the installation groove 403. An internal sliding connection is provided with a guide post 405. A limit ring 406 is installed at one end of the guide post 405, and a positioning pin 407 is installed at the other end of the guide post 405. The outer wall of the positioning pin 407 is slidably connected to the interior of the positioning hole 302. A spring 408 is provided on the outer wall of the guide post 405. An anti-slip sleeve 409 is slidably connected to one side of the outer wall of the sealing cover B4. The sealing plug 401 on the sealing cover B4 is slidably connected to the L-shaped guide groove 3 on the silicone discharge tube 3 by four sets of guide seats 402. Within 01, the mechanism rotates to install the sealing cap B4 on the outer wall of the silicone discharge tube 3, thus sealing the silicone discharge tube 3. The guide post 405 on the positioning pin 407 slides into the center of the guide plate 404 on the guide seat 402. A spring 408 is fitted onto the outer wall of the guide post 405. Due to the elastic reaction force of the spring 408, before the sealing cap B4 is installed on the outer wall of the silicone discharge tube 3, it will press against the positioning pin 407. After the sealing cap B4 rotates, the spring 408, without pressure, pushes the positioning pin 407 into the positioning hole 302, thus fixing the sealing cap B4. Similarly, since the positioning pin 407 is trapezoidal, it only needs to be rotated forcefully until it is compressed and retracts into the mounting groove 403 on the guide seat 402, allowing the sealing cap B4 to be pulled out, achieving disassembly. This facilitates the disassembly and assembly of the sealing cap B4 and also facilitates the cleaning of discolored silicone discharge from the silicone container 1.

[0024] Working Principle: When using this utility model, the silicone tank 1 on the transformer breather is installed on the transformer via the mounting flange. Silicone is injected into the silicone inlet pipe 2 of the silicone tank 1, and the sealing cap A201 is screwed onto the top of the silicone inlet pipe 2. The sealing cap A201 seals the silicone inlet pipe 2, preventing air from entering the silicone tank 1 as much as possible. By installing the silicone inlet pipe 2 on one side of the top of the silicone tank 1 and the silicone outlet pipe 3 on the lower part of the outer wall of one side, when replacing or cleaning the silicone inside the silicone tank 1, the silicone can be discharged simply through the silicone outlet pipe 3. There is no need to disassemble the silicone tank 1 from the transformer. Using a breather that does not require disassembly can better prevent moisture and impurities from entering the transformer oil, reducing moisture and contamination of the transformer oil, slowing down the aging rate of the oil, and thus extending the service life of the transformer oil. At the same time, it also reduces the mechanical damage and sealing performance degradation that may be caused to the transformer during the disassembly and installation of the breather, which is beneficial to extending the service life of the overall transformer equipment and reducing equipment replacement costs. The sealing plug 401 on the sealing cap B4 uses four sets of guide seats 40 2. The sealing cap B4 is installed on the outer wall of the silicone discharge tube 3 by sliding and rotating within the L-shaped guide groove 301. This achieves a sealing effect on the silicone discharge tube 3. The guide post 405 on the positioning pin 407 is slidably connected to the center of the guide plate 404 on the guide seat 402. A spring 408 is fitted onto the outer wall of the guide post 405. Due to the elastic reaction force of the spring 408, before the sealing cap B4 is installed on the outer wall of the silicone discharge tube 3, it will press against the positioning pin 407, thus sealing the cap. After B4 rotates, the spring 408, without pressure, pushes the positioning pin 407 into the positioning hole 302, thereby fixing the sealing cover B4. Similarly, since the positioning pin 407 is trapezoidal, it can be rotated forcefully until it is squeezed and retracts into the mounting groove 403 on the guide seat 402, allowing the sealing cover B4 to be pulled out for disassembly. This facilitates the disassembly and assembly of the sealing cover B4 and the cleaning of discolored silicone from the silicone canister 1, thus effectively improving the performance of the transformer breather and indirectly enhancing the safety of the transformer.

[0025] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A transformer breather, comprising a silicone tank (1), wherein a silicone feed pipe (2) is installed on one side of the top of the silicone tank (1), characterized in that: A silicone discharge pipe (3) is installed on the lower side of one outer wall of the silicone tank (1). The inner wall of the silicone discharge pipe (3) is provided with an L-shaped guide groove (301). A positioning hole (302) is provided on one side of the inner wall of the L-shaped guide groove (301). A sealing assembly is installed at one end of the silicone discharge tube (3). The sealing assembly includes a sealing cover B (4), and a sealing plug (401) is installed on one side of the inside of the sealing cover B (4).

2. The transformer breather according to claim 1, characterized in that: An installation flange (101) is installed at the top center of the silicone tank (1), an oil collection cup (102) is installed at the bottom of the silicone tank (1), and a viewing window (103) is installed on the upper side of the outer wall of the silicone tank (1).

3. The transformer breather according to claim 1, characterized in that: The top of the silicone feed tube (2) is fitted with a sealing cap A (201), and the interior of the sealing cap A (201) is threadedly connected to the outer wall of the silicone feed tube (2).

4. The transformer breather according to claim 1, characterized in that: The outer wall of the sealing plug (401) is slidably connected to the inside of the silicone discharge tube (3), and a guide seat (402) is provided on the outer wall of the sealing plug (401).

5. The transformer breather according to claim 4, characterized in that: The outer wall of the guide seat (402) is slidably connected to the inner wall of the L-shaped guide groove (301), and the guide seat (402) has an installation groove (403) inside.

6. The transformer breather according to claim 5, characterized in that: A guide plate (404) is installed inside the mounting groove (403), and a guide post (405) is slidably connected inside the guide plate (404). A limit ring (406) is installed at one end of the guide post (405).

7. The transformer breather according to claim 6, characterized in that: The other end of the guide post (405) is equipped with a positioning pin (407), and the outer wall of the positioning pin (407) is slidably connected to the inside of the positioning hole (302).

8. The transformer breather according to claim 7, characterized in that: A spring (408) is provided on the outer wall of the guide post (405), and an anti-slip sleeve (409) is slidably connected to one side of the outer wall of the sealing cover B (4).