Oil level indicating structure for a transformer

The fixing device, consisting of a miniature vibration motor and rubber blocks, solves the problem of oil adhesion on the inner wall of the oil level display tube, achieving both clarity and protection of the oil level display, and ensuring the accuracy and safety of oil level judgment.

CN224318259UActive Publication Date: 2026-06-02TIANJIN WEIKUANG ELECTRIC EQUIP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TIANJIN WEIKUANG ELECTRIC EQUIP CO LTD
Filing Date
2025-05-28
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

The existing oil level indicator structure of transformers makes it difficult to clean the oil adhering to the inner wall of the oil level display tube, resulting in an unclear oil level-air interface and affecting the accuracy and reliability of oil level judgment.

Method used

A fixing device consisting of a miniature vibration motor and rubber blocks is used to break the adhesion of oil through high-frequency micro-vibration. Combined with a protective device to prevent external collisions, it ensures the cleanliness and protection of the oil level display tube.

Benefits of technology

It effectively removes oil adhering to the inner wall of the oil level display tube, maintaining the accuracy and reliability of oil level observation, while preventing damage to the oil level display tube and ensuring the observability of oil level changes.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model relates to fixed support technical field, concretely is oil level indicating structure of transformer, the utility model discloses a connecting pipe, characterized in that: one end of connecting pipe is equipped with fixing device, fixing device includes fixed ring, one end of fixed ring is fixedly connected with connecting pipe, the fixed ring one end fixedly connected with oil level display pipe, the fixed ring one end fixedly connected with internal thread ring, the arc surface fixed connection of internal thread ring has elastic plate, the long arm end fixed connection of elastic plate has micro -vibration motor, one side fixed connection of micro -vibration motor has rubber resistance block, the long arm end fixed connection of elastic plate has rubber resistance board. The utility model has solved the oil level indicating structure of traditional transformer, is not convenient for cleaning oil level display pipe inner wall attached oil, makes the interface of oil level and air become dim, is difficult to judge the actual position of oil level accurately, influences the problem of the accuracy and reliability of indication.
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Description

Technical Field

[0001] This utility model relates to the field of fixed support technology, and in particular to an oil level indicator structure for a transformer. Background Technology

[0002] The transformer oil level indicator is a device used to display the oil level inside the transformer. It helps maintenance personnel to understand the amount and status of the transformer oil in a timely manner, so as to ensure the safe and stable operation of the transformer.

[0003] In the existing technology, the oil level indicator structure of the transformer is not convenient for cleaning the oil adhering to the inner wall of the oil level display tube. The adhering oil will form an uneven oil film on the inner wall of the oil level display tube, making the interface between the oil level and the air unclear and making it difficult to accurately determine the actual position of the oil level. This leads to the operation and maintenance personnel misjudging the oil level status of the transformer, affecting the accuracy and reliability of the indication. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing transformer oil level indicator structures, which are inconvenient for cleaning the oil adhering to the inner wall of the oil level display tube, and to propose a transformer oil level indicator structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an oil level indicator structure for a transformer, comprising a connecting pipe, a fixing device at one end of the connecting pipe, the fixing device comprising a fixing ring, one end of the fixing ring being fixedly connected to the connecting pipe, an oil level display tube being fixedly connected to one end of the fixing ring, an internal threaded ring being fixedly connected to one end of the fixing ring, an elastic plate being fixedly connected to the arc surface of the internal threaded ring, a miniature vibration motor being fixedly connected to the long arm end of the elastic plate, and a rubber abutment being fixedly connected to one side of the miniature vibration motor.

[0006] The effect achieved by the above components is as follows: the micro vibration motor starts, generates high-frequency micro-amplitude vibration, and transmits it to the elastic plate and the rubber block. As the rubber block continuously presses against the oil level display tube under the action of the elastic plate, the vibration is transmitted from the rubber block to the oil level display tube, causing the oil level display tube to vibrate.

[0007] Preferably, a rubber abutment is fixedly connected to the long arm end of the elastic plate.

[0008] The effect achieved by the above components is that the rubber abutment is fixed on the elastic plate.

[0009] Preferably, the internal threaded ring is internally threaded to an external threaded ring.

[0010] The effect achieved by the above components is that the internal threaded ring and the external threaded ring are compatible.

[0011] Preferably, one end of the external threaded ring is fixedly connected to an outer cover.

[0012] The effect achieved by the above components is that the outer cover is fixed on the external threaded ring.

[0013] Preferably, the arc surface of the connecting pipe is provided with a protective device, the protective device including a connecting ring, the inner side of the connecting ring being fixedly connected to the connecting pipe, one end of the connecting ring being fixedly connected to six internally threaded cylinders, and one end of the connecting ring being fixedly connected to a U-shaped protective plate.

[0014] The aforementioned components achieve the following effect: both the U-shaped protective plate and the internally threaded cylinder are fixed on the connecting ring, and the connecting ring is fixed on the connecting pipe.

[0015] Preferably, the six internally threaded cylinders are internally threaded with screws, and one end of the screws is fixedly connected to a protective rod.

[0016] The effect achieved by the above components is that the rotation of the protective rod drives the screw to rotate out or into the internal threaded cylinder.

[0017] Preferably, the arc surface of the protective rod is fixedly connected to a rubber sleeve, and the arc surfaces of the six protective rods are slidably connected to a limit plate.

[0018] The aforementioned components achieve the following effects: the rubber sleeve reduces impact force, and the assembly of the limiting plate and the guard rod prevents deformation of the guard rod.

[0019] Preferably, an assembly ring is fixedly connected to the inner side of the limiting plate.

[0020] The effect achieved by the above components is to fix the assembly ring to the limiting plate.

[0021] Preferably, a fixing rod is slidably connected inside the assembly ring, and one end of the fixing rod is fixedly connected to the outer cover.

[0022] The effect achieved by the above components is that the assembly ring and the fixing rod are compatible.

[0023] In summary, the beneficial effects of this utility model are as follows:

[0024] In this invention, a fixing device is used to prevent oil from adhering to the inner wall of the oil level display tube. A miniature vibration motor is activated, and a rubber block applies vibration to the oil level display tube, breaking the oil adhesion and causing the oil to slide off. This fixing device solves the problem that traditional transformer oil level indication structures are inconvenient to clean the oil adhering to the inner wall of the oil level display tube, making the interface between the oil level and air unclear and making it difficult to accurately determine the actual position of the oil level, thus affecting the accuracy and reliability of the indication.

[0025] In this invention, a protective device is used to effectively protect the oil level display tube when necessary. The protective rod and U-shaped protective plate surround the oil level display tube to form a protective barrier against external collisions and impacts. This protective device solves the problem that the traditional oil level indication structure of transformers is not convenient for protecting the oil level display tube and is easily damaged after impact, thus making it impossible to observe changes in the oil level. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the fixing structure of this utility model;

[0028] Figure 3 This is a cross-sectional structural diagram of the three-dimensional structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the protective structure of this utility model.

[0030] Legend: 1. Connecting pipe; 2. Fixing device; 21. Fixing ring; 22. Oil level indicator pipe; 23. Internal threaded ring; 24. Elastic plate; 25. Miniature vibration motor; 26. Rubber block; 27. Rubber plate; 28. Outer cover; 29. ​​External threaded ring; 3. Protective device; 31. Connecting ring; 32. Internal threaded cylinder; 33. Screw; 34. Fixing rod; 35. Protective rod; 36. Rubber sleeve; 37. Limiting plate; 38. Assembly ring; 39. U-shaped protective plate. Detailed Implementation

[0031] Reference Figure 1 and Figure 3 As shown, this utility model provides a technical solution: an oil level indicator structure for a transformer, including a connecting pipe 1, a fixing device 2 at one end of the connecting pipe 1, and a protective device 3 on the arc surface of the connecting pipe 1.

[0032] The following section will describe in detail the specific setup and function of its fixing device 2 and protective device 3.

[0033] Reference Figure 2As shown in this embodiment: the fixing device 2 includes a fixing ring 21, one end of which is fixedly connected to the connecting pipe 1, and an oil level display tube 22 is fixedly connected to one end of the fixing ring 21. An internally threaded ring 23 is fixedly connected to one end of the fixing ring 21, and an elastic plate 24 is fixedly connected to the arc surface of the internally threaded ring 23. A miniature vibration motor 25 is fixedly connected to the long arm end of the elastic plate 24, and a rubber abutment 26 is fixedly connected to one side of the miniature vibration motor 25. This achieves the effect of the miniature vibration motor 25 starting, generating high-frequency micro-amplitude vibration, which is transmitted to the elastic plate 24 and the rubber abutment 26. Because the rubber abutment 26 continuously abuts against the oil level display tube 22 under the action of the elastic plate 24, the vibration is transmitted from the rubber abutment 26 to the oil level display tube 22, causing the oil level display tube 22 to vibrate. A rubber abutment plate 27 is fixedly connected to the long arm end of the elastic plate 24, achieving the effect of fixing the rubber abutment plate 27 to the elastic plate 24. An externally threaded ring 29 is connected to the internal thread of the internally threaded ring 23. This achieves the effect of matching the internal threaded ring 23 and the external threaded ring 29. One end of the external threaded ring 29 is fixedly connected to the outer cover 28, thus achieving the effect of fixing the outer cover 28 to the external threaded ring 29.

[0034] Reference Figure 4 As shown in this embodiment: the protective device 3 includes a connecting ring 31, the inner side of which is fixedly connected to the connecting pipe 1. Six internally threaded cylinders 32 are fixedly connected to one end of the connecting ring 31, and a U-shaped protective plate 39 is fixedly connected to the other end of the connecting ring 31. This achieves the effect that the U-shaped protective plate 39 and the internally threaded cylinders 32 are both fixed to the connecting ring 31, and the connecting ring 31 is fixed to the connecting pipe 1. The internal threads of the six internally threaded cylinders 32 are connected to screws 33, and one end of the screws 33 is fixedly connected to a protective rod 35. This achieves the effect that the rotation of the protective rod 35 drives the screws 33 to screw out or into the internally threaded cylinders 32. A rubber sleeve 36 is fixedly connected to the arc surface of the protective rod 35, and a limiting plate 37 is slidably connected to the arc surface of the six protective rods 35. This achieves the effect that the rubber sleeves 36 reduce impact force, and the assembly of the limiting plate 37 and the protective rod 35 prevents deformation of the protective rod 35. An assembly ring 38 is fixedly connected to the inner side of the limiting plate 37. This achieves the effect of fixing the assembly ring 38 to the limiting plate 37. A fixing rod 34 is slidably connected inside the assembly ring 38, and one end of the fixing rod 34 is fixedly connected to the outer cover 28. This achieves the effect of matching the assembly ring 38 and the fixing rod 34.

[0035] Working principle: Using the fixing device 2, when it is necessary to prevent oil from adhering to the inner wall of the oil level display tube 22, the operator first securely installs the connecting pipe 1 onto the transformer tank, establishing a communication channel between the tank and the oil level display tube 22, allowing the oil to flow smoothly into the tube and achieve real-time oil level indication. Next, the miniature vibration motor 25 is connected to the external control module, and the vibration frequency of the motor within a specific time period is precisely set to adapt to different operating conditions. After completing the above installation and debugging, the miniature vibration motor 25 is started. The high-frequency, low-amplitude vibration it generates is amplified by the rubber abutment 26 that abuts against the oil level display tube 22. Used for the oil level display tube 22, it effectively breaks the adhesion between the oil and the tube wall. Under the continuous action of vibration, the oil originally attached to the inner wall of the display tube gradually falls off, either returning to the oil tank with the natural flow of the oil or settling to the bottom of the oil level tube, thereby keeping the inner wall of the oil level display tube 22 clean and ensuring the accuracy and clarity of oil level observation. Through the fixing device 2, the problem of traditional transformer oil level indication structure, which is not convenient for cleaning the oil attached to the inner wall of the oil level display tube 22, makes the interface between the oil level and air unclear, and makes it difficult to accurately judge the actual position of the oil level, thus affecting the accuracy and reliability of the indication, is solved.

[0036] When effective protection of the oil level display tube 22 is required using the protective device 3, the operator first installs the connecting ring 31 onto the connecting tube 1, laying the foundation for the subsequent construction of the protective structure. Then, holding the rubber sleeve 36, the operator precisely aligns the screw 33 with the internal threaded cylinder 32. Next, rotating the rubber sleeve 36 causes the protective rod 35 to slowly screw the screw 33 into the internal threaded cylinder 32. Through thread engagement, the initial positioning and fixing of the protective rod 35 is completed. Subsequently, the limiting plate 37 is installed onto the protective rod 35, and simultaneously, the assembly ring... The 38 is mounted on the fixing rod 34. The combination of the two further enhances the stability and firmness of the fixing rod 34. The protective rod 35 and the U-shaped protective plate 39 surrounding the oil level display tube 22 form a protective barrier, which can effectively resist external collisions and impacts, and protect the safety of the oil level display tube 22 in all aspects. Through the protective device 3, the problem of traditional transformer oil level indication structure is not convenient for protecting the oil level display tube 22, and is easily damaged after impact, thus making it impossible to observe changes in oil level is solved.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. An oil level indicating structure for a transformer, comprising a connecting pipe (1), characterized in that: One end of the connecting pipe (1) is provided with a fixing device (2), the fixing device (2) includes a fixing ring (21), one end of the fixing ring (21) is fixedly connected to the connecting pipe (1), one end of the fixing ring (21) is fixedly connected to an oil level display pipe (22), one end of the fixing ring (21) is fixedly connected to an internal threaded ring (23), the arc surface of the internal threaded ring (23) is fixedly connected to an elastic plate (24), the long arm end of the elastic plate (24) is fixedly connected to a micro vibration motor (25), and one side of the micro vibration motor (25) is fixedly connected to a rubber abutment (26).

2. The oil level indication structure for a transformer according to claim 1, characterized in that: A rubber abutment (27) is fixedly connected to the long arm end of the elastic plate (24).

3. The oil level indicating structure for a transformer according to claim 1, characterized in that: The internal threaded ring (23) is internally threaded to an external threaded ring (29).

4. The oil level indicating structure for a transformer according to claim 3, characterized in that: One end of the external threaded ring (29) is fixedly connected to an outer cover (28).

5. The oil level indicating structure for a transformer according to claim 2, characterized in that: The arc surface of the connecting pipe (1) is provided with a protective device (3). The protective device (3) includes a connecting ring (31). The inner side of the connecting ring (31) is fixedly connected to the connecting pipe (1). Six internal threaded cylinders (32) are fixedly connected to one end of the connecting ring (31). A U-shaped protective plate (39) is fixedly connected to one end of the connecting ring (31).

6. The oil level indicating structure for a transformer according to claim 5, characterized in that: The six internally threaded cylinders (32) are internally threaded with screws (33), and one end of the screws (33) is fixedly connected with a protective rod (35).

7. The oil level indication structure for a transformer according to claim 6, characterized in that: The arc surface of the protective rod (35) is fixedly connected to a rubber sleeve (36), and the arc surfaces of the six protective rods (35) are slidably connected to a limit plate (37).

8. The oil level indication structure for a transformer according to claim 7, characterized in that: An assembly ring (38) is fixedly connected to the inner side of the limiting plate (37).

9. The oil level indication structure for a transformer according to claim 8, characterized in that: The assembly ring (38) is internally slidably connected to a fixing rod (34), one end of which is fixedly connected to the outer cover (28).