Oil-immersed transformer square tube type oil level gauge

Abstract

The application relates to the field of oil level gauges, and discloses an oil-immersed transformer square-tube oil level gauge. In the application, the oil-immersed transformer square-tube oil level gauge comprises a pipe body, the lower end of the pipe body is provided with a limiting sleeve rod, the inside of the limiting sleeve rod is provided with a connecting rod, and the lower end of the connecting rod is fixedly connected with a threaded connecting port two. When workers need to perform replacement operation, the workers rotate a float out of the threaded connecting port two, then conveniently remove the float, then conveniently perform cleaning operation, then pass a gasket through the threaded connecting port two, then threadedly connect an annular plate, so that the connecting rod and the float are connected, thereby facilitating subsequent operation, and the gasket is arranged to facilitate the connection between the connecting rod and the annular plate, thereby guaranteeing the stability of the connection between the components.

Description

Technical Field

[0001] This application belongs to the field of oil level gauge technology, specifically a square tube type oil level gauge for oil-immersed transformers. Background Technology

[0002] The square tube oil level gauge for oil-immersed transformers is an important device commonly used for monitoring transformer oil levels. Its square tube design provides strong structural stability and durability, enabling it to maintain good performance in complex environments such as high voltage and high temperature, ensuring accurate oil level measurement. Secondly, the oil-immersed design effectively reduces interference from external air, guaranteeing measurement accuracy and reliability. Its clear oil level indication allows operators to visually observe oil level changes and promptly detect abnormalities such as excessively low or high oil levels, ensuring the normal operation of the transformer. Furthermore, this oil level gauge typically employs an anti-corrosion coating to prevent corrosion of the gauge surface due to oil, air, or moisture, extending the equipment's service life. The square tube oil level gauge for oil-immersed transformers also boasts strong adaptability, being compatible with transformers of different specifications and types, and is widely used in various industries such as power, metallurgy, and chemical engineering, meeting the needs of different environments and operating conditions. Through its precise oil level monitoring, it effectively prevents abnormal oil level in transformers, thereby ensuring safe equipment operation, reducing the failure rate, and improving the overall stability and reliability of the power system.

[0003] For example, CN208383244U discloses a tubular oil level gauge for oil-immersed transformers, belonging to the field of transformer manufacturing technology. The tubular oil level gauge includes a tube body, a pressure relief valve, and a float indicator device built into the tube body. The pressure relief valve is threadedly fixed to the upper end of the tube body. A viewing window for observing the status of the float indicator device is provided on the tube body. The float indicator device includes a float, a connecting rod, and a float. The upper end of the connecting rod passes through the bottom of the tube body and connects to the float placed inside the tube body. The lower end of the connecting rod connects to the float, which is a hollow sphere containing a weight. This invention utilizes a principle similar to a roly-poly toy, where a lower center of gravity results in greater stability, ensuring that the float indicator device is always in a vertical position. It has a simple structure and provides more accurate and stable oil level display.

[0004] However, in the common application of this application, the connection of the float is not convenient to disassemble, which makes it inconvenient to clean the float after long-term operation, and thus easily affects the use of subsequent operations. Utility Model Content

[0005] The purpose of this application is to provide an oil-immersed transformer square tube oil level gauge in order to solve the problem of easy disassembly and reassembly of the float connection mentioned above.

[0006] The technical solution adopted in this application is as follows: A square tube oil level gauge for an oil-immersed transformer includes a tube body, a limiting sleeve rod is provided at the lower end of the tube body, a connecting rod is provided inside the limiting sleeve rod, a threaded connection port two is fixedly connected at the lower end of the connecting rod, an annular plate is threadedly connected at the lower end of the threaded connection port two, a gasket is provided at the middle position of the connecting rod and the annular plate, and a float is fixedly connected at the lower end of the annular plate.

[0007] By adopting the above technical solution, the float can be easily disassembled and installed during the use of structural components, facilitating maintenance and removal of oil stains from the float surface, ensuring its cleanliness and facilitating subsequent operations. When replacement is needed, the float is rotated out of the threaded connection port two for easy removal and cleaning. A gasket is then inserted through the threaded connection port two and threaded into the annular plate, connecting the connecting rod and the float, thus facilitating subsequent operations. The gasket also strengthens the connection between the connecting rod and the annular plate, ensuring a stable connection between components.

[0008] In a preferred embodiment, a base plate is fixedly connected to the lower end of the tube body, and a threaded connection port is fixedly connected to the lower end of the base plate, with the limiting sleeve located inside the threaded connection port.

[0009] By adopting the above technical solution, the base plate can be conveniently mounted at the position of the threaded connection port, thereby facilitating the connection of other components through the threaded connection port and making subsequent operations more convenient.

[0010] In a preferred embodiment, a viewing window is provided on the side of the tube, and a liquid level display column is provided inside the tube adjacent to the viewing window, with the lower end of the liquid level display column connected to a connecting rod.

[0011] By adopting the above technical solution, the position of the liquid level display column inside the tube can be observed through the edge of the viewing window, thereby facilitating the observation of the component's measurement structure through the position of the liquid level display column, making it convenient for staff to observe and use during operations.

[0012] In a preferred embodiment, a sealing cap is threadedly connected to the upper end of the tube.

[0013] By adopting the above technical solution, the sealing cover can be conveniently equipped with a locking device and a pressure relief valve, thereby ensuring the working position of the equipment components and facilitating subsequent operation.

[0014] In a preferred embodiment, a pressure relief valve is provided at the upper end of the sealing cover, and a pin is provided at the upper end of the pressure relief valve.

[0015] By adopting the above technical solution, the use of pins facilitates pressure relief within the pipe, makes it easy to open and release the pressure inside the pipe, and ensures the safety of operators when disassembling the pipe when there is no oil inside. The pins are also easy to use in conjunction with the locking device.

[0016] In a preferred embodiment, the surface of the sealing cover is provided with a locking device, and a pin passes through the locking device.

[0017] By adopting the above technical solution, the pressure relief valve can be opened using a pin and a locking device, making it easier for operators to control the operation.

[0018] In a preferred embodiment, the surface of the pipe body is coated with anti-corrosion paint.

[0019] By adopting the above technical solutions, anti-corrosion paint can effectively prevent the surface of the oil level gauge from being corroded by the external environment, prevent rust and corrosion, thereby extending the service life of the oil level gauge and ensuring its use in long-term outdoor or high-temperature environments.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0021] In this application, the use of structural components facilitates the disassembly and installation of the float, making it convenient for workers to maintain the float and remove any oil stains from its surface, ensuring its cleanliness and facilitating subsequent operations. When workers need to replace the float, they rotate it out of the threaded connection port two for easy removal and cleaning. Then, a gasket is passed through the threaded connection port two and threaded into the annular plate, connecting the connecting rod and the float, thus facilitating subsequent operations. The gasket also strengthens the connection between the connecting rod and the annular plate, ensuring a stable connection between the components. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the square tube type oil level gauge for an oil-immersed transformer according to this application;

[0023] Figure 2 This is a schematic diagram of the bottom structure of the square tube oil level gauge of the oil-immersed transformer in this application;

[0024] Figure 3 This is a schematic diagram of the connecting rod assembly in this application.

[0025] The markings in the diagram are: 1. Pipe body; 2. Viewing window; 3. Liquid level display column; 4. Sealing cover; 5. Pressure relief valve; 6. Pin; 7. Locking device; 8. Base plate; 9. Float; 10. Limiting sleeve; 11. Connecting rod; 12. Threaded connection port one; 13. Threaded connection port two; 14. Annular plate; 15. Gasket. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] Example:

[0028] Reference Figure 1-3 A square tube type oil level gauge for oil-immersed transformers includes a tube body 1. A limiting sleeve 10 is provided at the lower end of the tube body 1. A connecting rod 11 is provided inside the limiting sleeve 10. A threaded connection port 13 is fixedly connected to the lower end of the connecting rod 11. An annular plate 14 is threadedly connected to the lower end of the threaded connection port 13. A gasket 15 is provided between the connecting rod 11 and the annular plate 14. A float 9 is fixedly connected to the lower end of the annular plate 14. In the use of this structural component, the float 9 can be easily disassembled and installed, facilitating maintenance work by personnel. To prevent oil stains from getting on the surface of float 9, ensuring its cleanliness for subsequent operations, when workers need to replace it, they rotate float 9 out of the threaded connection port 13 for easy removal and cleaning. Then, the gasket 15 is passed through the threaded connection port 13 and threaded into the annular plate 14, connecting the connecting rod 11 and float 9 for easy operation. The gasket 15 also strengthens the connection between the connecting rod 11 and the annular plate 14, ensuring a stable connection between the components.

[0029] Reference Figure 1-2 The lower end of the pipe body 1 is fixedly connected to a base plate 8, and the lower end of the base plate 8 is fixedly connected to a threaded connection port 12. The limiting sleeve 10 is located inside the threaded connection port 12. The base plate 8 is convenient to mount the threaded connection port 12, so that it is convenient to connect other components by using the threaded connection port 12, which facilitates subsequent operation.

[0030] Reference Figure 1-3A viewing window 2 is provided on the side of the tube body 1. A liquid level display column 3 is provided inside the tube body 1 at a position adjacent to the viewing window 2. The lower end of the liquid level display column 3 is connected to the connecting rod 11. The edge of the viewing window 2 allows observation of the position of the liquid level display column 3 inside the tube body 1, thereby facilitating the observation of the component's measurement structure through the position of the liquid level display column 3, making it convenient for staff to observe and use during operation.

[0031] Reference Figure 1-2 The upper end of the pipe body 1 is threaded with a sealing cover 4. The sealing cover 4 facilitates the mounting of the locking device 7 and the pressure relief valve 5, thereby ensuring the working position of the equipment components and facilitating subsequent operation.

[0032] Reference Figure 1-2 The upper end of the sealing cover 4 is provided with a pressure relief valve 5, and the upper end of the pressure relief valve 5 is provided with a pin 6. The pin 6 is used to facilitate the pressure relief inside the pipe body 1, facilitates the opening and release of the pressure inside the pipe body 1, and ensures the safety of the operator when disassembling the pipe body 1 when there is no oil inside the pipe body 1. The pin 6 is also convenient to be used in conjunction with the locking device 7.

[0033] Reference Figure 1-2 The surface of the sealing cover 4 is provided with a locking device 7, and a pin 6 is inserted inside the locking device 7. By using the pin 6 and the locking device 7, the pressure relief valve 5 can be opened, which makes it convenient for the operator to operate.

[0034] Reference Figure 1-2 The surface of the tube body 1 is coated with anti-corrosion paint. The anti-corrosion paint can effectively prevent the surface of the oil level gauge from being corroded by the external environment, prevent rust and corrosion, thereby extending the service life of the oil level gauge and ensuring its use in long-term outdoor or high-temperature environments.

[0035] The implementation principle of the square tube type oil level gauge for an oil-immersed transformer according to this application is as follows:

[0036] In the use of structural components, the float 9 is easy to disassemble and install, facilitating maintenance and removal of any oil or dirt from its surface. This ensures a clean surface for subsequent operations. When replacement is needed, the float 9 is rotated out of the threaded connection port 13 for easy removal and cleaning. The gasket 15 is then passed through the threaded connection port 13 and threaded into the annular plate 14, connecting the connecting rod 11 and the float 9. This facilitates subsequent operations. The gasket 15 strengthens the connection between the connecting rod 11 and the annular plate 14, ensuring a stable connection between components. This structure facilitates the disassembly and installation of the float 9, making cleaning easier, ensuring free floating of the float 9, reducing the impact of contamination on measurement accuracy, and improving the reliability and durability of the oil level gauge.

[0037] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A square tube type oil level gauge for an oil-immersed transformer, comprising a tube body (1), characterized in that: The lower end of the tube body (1) is provided with a limiting sleeve (10), and a connecting rod (11) is provided inside the limiting sleeve (10). The lower end of the connecting rod (11) is fixedly connected to a threaded connection port (13), and the lower end of the threaded connection port (13) is threadedly connected to an annular plate (14). A gasket (15) is provided in the middle position between the connecting rod (11) and the annular plate (14), and a float (9) is fixedly connected to the lower end of the annular plate (14).

2. The square tube type oil level gauge for an oil-immersed transformer as described in claim 1, characterized in that: The lower end of the tube body (1) is fixedly connected to a base plate (8), and the lower end of the base plate (8) is fixedly connected to a threaded connection port (12). The limiting sleeve (10) is located inside the threaded connection port (12).

3. The square tube type oil level gauge for an oil-immersed transformer as described in claim 1, characterized in that: The side of the tube (1) is provided with a viewing window (2), and the inside of the tube (1) is provided with a liquid level display column (3) adjacent to the viewing window (2). The lower end of the liquid level display column (3) is connected to a connecting rod (11).

4. The square tube type oil level gauge for an oil-immersed transformer as described in claim 1, characterized in that: The upper end of the tube (1) is threaded with a sealing cap (4).

5. The square tube type oil level gauge for an oil-immersed transformer as described in claim 4, characterized in that: The upper end of the sealing cover (4) is provided with a pressure relief valve (5), and the upper end of the pressure relief valve (5) is provided with a pin (6).

6. The square tube type oil level gauge for an oil-immersed transformer as described in claim 4, characterized in that: The surface of the sealing cover (4) is provided with a locking device (7), and a pin (6) is inserted inside the locking device (7).

7. The square tube type oil level gauge for an oil-immersed transformer as described in claim 1, characterized in that: The surface of the pipe body (1) is coated with anti-corrosion paint.

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