Transformer oil tank with deformation monitoring function

Abstract

The transformer oil tank comprises a tank body shell plate, a tank body bottom plate and a tank body top plate, wherein the tank body bottom plate and the tank body top plate seal the upper end and the lower end of the tank body shell plate; the box body shell plate is manufactured by bending a rectangular shell plate main body and then welding the shell plate main body end to end, a detection paddle-tumbler and a positioning sinking groove are formed in the outer side surface of the shell plate main body, and the positioning sinking groove is formed by avoiding the bending position of the shell plate main body; the box body shell plate is provided with heat dissipation fins at the positioning sinking grooves, the side, away from the box body shell plate, of each heat dissipation fin is provided with a receding paddle-tumbler, and the receding paddle-tumbler communicates with the detection paddle-tumbler and is provided with a plurality of optical fiber sensors in a distributed mode; the outlet end of the fiber bragg grating demodulator is connected to the inlet end after being connected with an optical fiber and sequentially connected with a plurality of optical fiber sensors in series along the abdicating paddle-tumbler and the detection paddle-tumbler. The box shell plate is formed by bending the shell plate body, optical fiber arrangement is smoother, and a large amount of bending caused by height difference in the optical fiber arrangement process can be avoided by arranging the positioning sinking groove.

Description

Technical Field

[0001] This utility model relates to the field of oil-immersed transformer technology, specifically to a transformer oil tank equipped with deformation monitoring. Background Technology

[0002] When transformer tanks deform, they are prone to oil leaks and fires. Even without leaks, deformation can cause internal structural components to be compressed, leading to poor contact or localized leaks. Therefore, under current conditions, transformer tanks need to be inspected periodically to ensure their structural integrity. However, in some cases, such as prolonged operation causing the transformer oil temperature to rise and the internal pressure to increase, deformation of the transformer tank can easily occur. In such situations, the deformation of the current oil-immersed transformer cannot be detected in time, which can easily lead to accidents. Utility Model Content

[0003] To address the aforementioned problem of the inability to provide real-time feedback on transformer tank deformation, this invention provides a transformer tank equipped with deformation monitoring.

[0004] The technical solution of this utility model is as follows:

[0005] A transformer oil tank with deformation monitoring includes a tank shell plate and a tank bottom plate and a tank top plate at the upper and lower ends of the sealed tank shell plate;

[0006] The housing shell is made by bending a rectangular shell body and welding the ends together. The outer side of the shell body is provided with a detection groove and a positioning groove, and the positioning groove is set to avoid the bending position of the shell body.

[0007] The housing shell plate is provided with heat dissipation fins at the positioning groove, and the side of the heat dissipation fins away from the housing shell plate is provided with a clearance groove. The clearance groove is connected to the detection groove and multiple fiber optic sensors are distributed thereon.

[0008] The fiber optic demodulator is set up so that the fiber optic cable at the output end is connected to the fiber optic cable, and the fiber optic cable at the detection groove is connected in series with multiple fiber optic sensors, which are then connected to the inlet end.

[0009] By using fiber optic sensors to detect deformation in the transformer tank, problems with the transformer tank can be reported and addressed promptly, making it more timely than existing detection methods.

[0010] To facilitate processing, inspection grooves and positioning slots are symmetrically arranged on the shell plate body. This method not only facilitates processing but also enables standardized bending and welding operations.

[0011] To ensure that fiber optic sensors can be placed on the heat sink fins after installation, the depth of the positioning groove is greater than the depth of the detection groove.

[0012] The specific structure of the aforementioned heat dissipation fins is as follows: the heat dissipation fins include a mounting plate corresponding to the positioning groove, and the fins are arranged on the side of the mounting plate away from the casing plate. The fins are vertical and avoid the clearance groove.

[0013] To ensure proper fit and thermal conductivity, a thermally conductive filler layer composed of epoxy resin, aluminum powder, and silane coupling agent is provided between the mounting plate and the positioning groove.

[0014] As one connection method, the mounting plate is welded to the housing shell plate.

[0015] To ensure the continuity of the groove, there is a gap between the detection groove and the edge of the shell plate body.

[0016] As a preferred embodiment, the number of fiber optic sensors on the same horizontal plane is greater than one.

[0017] As a preferred embodiment, the number of fiber optic sensors on the same vertical plane is greater than one.

[0018] To ensure effective coverage of deformation monitoring, the detection grooves cover all vertical surfaces on the outer side of the housing shell.

[0019] The beneficial effects of this utility model are as follows: This utility model is a transformer oil tank with deformation monitoring. It changes the existing processing method of transformer oil tanks. The tank shell is formed by bending the main body of the shell plate instead of welding multiple vertical plates together. Therefore, it can ensure the continuity of the detection grooves and make the fiber optic cable arrangement smoother. In addition, by setting the positioning groove, it can avoid the heat dissipation fins from protruding outward, thus ensuring that the fiber optic cable is not bent too much during the arrangement process and the bending angle is not too large. Then, according to the distribution of the corresponding number of fiber optic sensors and the use of fiber optic grating demodulator, the deformation can be detected, which can ensure timely detection after the tank is deformed. Attached Figure Description

[0020] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0021] In the attached diagram:

[0022] Figure 1 This is a schematic diagram of the unfolded structure of the box shell plate of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of this utility model (after disassembling the heat sink fins);

[0024] Figure 3 This is a front view structural diagram of the present invention;

[0025] Figure 4 This is a schematic diagram of the shell structure of this utility model;

[0026] The components represented by the various reference numerals in the diagram are:

[0027] 1. Enclosure shell; 11. Shell body; 12. Inspection groove; 13. Positioning groove; 2. Enclosure bottom plate; 3. Enclosure top plate; 4. Heat dissipation fins; 41. Mounting plate; 42. Clearance groove; 43. Fins; 5. Fiber grating demodulator. Detailed Implementation

[0028] like Figure 3 , 4 The transformer oil tank shown includes a tank shell 1 and a bottom plate 2 and a top plate 3 at the upper and lower ends of the sealed tank shell 1. The above structure can form a complete sealed cavity, which can be filled with transformer oil and then the structural components can be installed.

[0029] The main design focus of this device is that the housing shell 1 is made by bending a rectangular shell body 11 and welding it end to end. In other words, the housing shell 1 only requires one vertical weld to complete the welding. Furthermore, the outer surface of the shell body 11 is provided with a detection groove 12 and a positioning groove 13. The detection groove 12 is used to arrange optical fibers, while the positioning groove 13 is used to install heat dissipation fins 4. This structure can be mass-produced directly through a preset processing path. It should be noted that the positioning groove 13 is positioned to avoid the bending points of the shell body. Figure 1 As shown, for ease of processing, the inspection groove 12 and the positioning groove 13 are symmetrically arranged on the shell plate body 11. This arrangement facilitates processing and also allows for standardized bending and welding operations.

[0030] After that, as Figures 2-3 As shown, the housing shell 1 has heat dissipation fins 4 at the positioning groove 13. To ensure the proper arrangement of the optical fibers, a clearance groove 42 is provided on the side of the heat dissipation fins 4 away from the housing shell 1. The clearance groove 42 is connected to the detection groove 12 and multiple optical fiber sensors are distributed thereon. It should be noted that in order to avoid excessive bending and small-angle bending of the optical fibers, and to ensure that the installed heat dissipation fins 4 can also be used for the arrangement of optical fiber sensors and the horizontal arrangement of optical fibers, the depth of the positioning groove 13 is greater than the depth of the detection groove 12. Since the heat dissipation fins 4 need to be integrated and cannot be separated, the above-mentioned clearance groove 42 cannot separate the heat dissipation fins 4. Therefore, after the heat dissipation fins 4 are installed, their inner surface cannot exceed the opening of the detection groove 12 to ensure that the clearance groove 42 can be opened.

[0031] The actual implementation is as follows: the heat dissipation fin 4 has the following specific structure: the heat dissipation fin 4 includes a mounting plate 41 corresponding to the positioning groove 13. The thickness of the mounting plate 41 is the same as the depth of the positioning groove 13. Fins 43 are provided on the side of the mounting plate 41 away from the housing plate 1. The fins 43 are vertical and avoid the clearance groove 42. Then, the mounting plate 41 is opened with a clearance groove 42 of the same depth as the detection groove 12. This method can ensure that the transition between the two grooves is smooth and the optical fiber will not bend.

[0032] Finally, after completing the above overall grooving settings, it can be done as follows: Figure 4 As shown, after the fiber optic cable is connected to the output end of the fiber optic demodulator 5, a clearance groove 42 and a detection groove 12 are connected in series with multiple fiber optic sensors and then connected to the inlet end. With this configuration, the fiber optic demodulator 5 can emit an optical signal, which is transmitted through the optical fiber and enters the fiber optic sensor. During this process, each fiber optic sensor can reflect an optical signal and transmit it to the fiber optic demodulator 5 through the optical fiber. The corresponding strain value is obtained by demodulating the interface through the center wavelength of the reflected optical signal. In this way, feedback can be provided in a timely manner after deformation problems occur in the transformer tank.

[0033] It should be noted that in the above structure, the number of fiber optic sensors on the same horizontal plane is greater than 1, and the number of fiber optic sensors on the same vertical plane is greater than 1. In order to ensure the coverage effect of deformation monitoring, the detection groove 12 covers all vertical surfaces on the outside of the tank shell 1. In this way, most of the position of the entire transformer tank can be covered, so that rapid feedback can be obtained after deformation occurs at any position.

[0034] The above structure enables the detection of deformation in the transformer tank using fiber optic sensors. If a problem occurs in the transformer tank, it can be reported and addressed promptly. This is more timely than existing detection methods and does not require the manual deployment of visual or ultrasonic detection equipment.

[0035] In addition to the above structure, as a preferred embodiment, to ensure a good fit and thermal conductivity, a thermally conductive filling layer composed of epoxy resin, aluminum powder, and silane coupling agent is provided between the mounting plate 41 and the positioning groove 13. This layer fills the gap between the casing plate 1 and the heat dissipation fins 4, ensuring better thermal conductivity. Furthermore, as a connection method, the mounting plate 41 is welded to the casing plate 1.

[0036] Finally, to ensure the continuity of the groove, there is a gap between the detection groove 12 and the edge of the shell plate body 11.

Claims

1. A transformer tank with deformation monitoring, comprising a tank shell plate (1) and a tank bottom plate (2) and a tank top plate (3) at the upper and lower ends of the sealed tank shell plate (1); Its features are, The box shell plate (1) is made by bending a rectangular shell plate body (11) and welding the ends together. The outer side of the shell plate body (11) is provided with a detection groove (12) and a positioning groove (13). The positioning groove (13) is set away from the bending position of the shell body. The housing shell plate (1) is provided with heat dissipation fins (4) at the positioning groove (13), and the side of the heat dissipation fins (4) away from the housing shell plate (1) is provided with a clearance groove (42). The clearance groove (42) is connected to the detection groove (12) and multiple fiber optic sensors are distributed thereon. The fiber optic demodulator (5) is set up with an optical fiber outlet end connected to a fiber optic clearance groove (42) and a detection groove (12), and then connected to the inlet end with multiple optical fiber sensors in series.

2. A transformer oil tank with deformation monitoring according to claim 1, characterized in that, The detection groove (12) and the positioning groove (13) are symmetrically arranged on the shell plate body (11).

3. A transformer oil tank with deformation monitoring according to claim 1, characterized in that, The depth of the positioning groove (13) is greater than the depth of the detection groove (12).

4. A transformer oil tank with deformation monitoring according to claim 1, characterized in that, The heat dissipation fins (4) include a mounting plate (41) corresponding to the positioning groove (13), and fins (43) are provided on the side of the mounting plate (41) away from the casing plate (1). The fins (43) are vertical and avoid the clearance groove (42).

5. A transformer oil tank with deformation monitoring according to claim 4, characterized in that, A thermally conductive filling layer composed of epoxy resin, aluminum powder and silane coupling agent is provided between the mounting plate (41) and the positioning sink (13).

6. A transformer oil tank with deformation monitoring according to claim 5, characterized in that, The mounting plate (41) is welded to the housing shell plate (1).

7. A transformer oil tank with deformation monitoring according to claim 1, characterized in that, There is a gap between the detection groove (12) and the edge of the shell body (11).

8. A transformer oil tank with deformation monitoring according to claim 1, characterized in that, The number of fiber optic sensors on the same horizontal plane is greater than 1.

9. A transformer oil tank with deformation monitoring according to claim 1, characterized in that, The number of fiber optic sensors on the same vertical plane is greater than 1.

10. A transformer oil tank with deformation monitoring according to claim 1, characterized in that, The detection groove (12) covers all vertical surfaces on the outside of the box shell plate (1).

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