Oil-immersed transformer with a new type of oil level gauge

Abstract

The utility model discloses a novel oil level meter's oil -immersed transformer, including oil level meter body, the bottom outer wall of oil level meter body is connected with second connecting barrel, the outer wall of second connecting barrel is connected with first connecting barrel, the bottom outer wall of first connecting barrel is connected with transformer body, still include: protection mechanism: protection mechanism includes the connecting rod of setting in the inside of oil level meter body, the bottom outer wall of connecting rod is connected with fixed link, the one end of fixed link is connected with the float away from connecting rod, the outer wall of connecting rod and float is connected with same rubber sleeve. The utility model discloses a novel oil level meter's oil -immersed transformer has through the pressure of buffer to the float of oil flow impact, thereby reduces the risk of float breakage, and through for observation window provides the lighting, thereby reaches the effect that can clearly read oil level information under the dim environment of light.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to a novel oil-immersed transformer with an oil level gauge. Background Technology

[0002] In power systems, oil-immersed transformers, as crucial electrical equipment, play a vital role in voltage transformation and power transmission. Their stable operation directly impacts the safety and reliability of the power system. Oil level gauges, as core auxiliary components of oil-immersed transformers, are used to monitor the level of insulating oil in the tank in real time, providing essential data for assessing the transformer's operational status.

[0003] However, in traditional oil-immersed transformers with new oil level gauges, during transformer operation, especially under conditions of load fluctuations and start-up / stop operations, the oil flow in the tank will generate severe impacts. These impacts directly act on the float, causing the float to bear large instantaneous pressure, which can easily lead to problems such as cracks and damage to the float, affecting the accuracy of oil level monitoring.

[0004] For example, during the operation of an oil-immersed transformer in an industrial park, due to frequent changes in the area's electrical load, the transformer often operates in a state of alternating start-stop cycles. The insulating oil in the tank experiences rapid temperature changes, causing intense convection. This oil flow creates continuous and irregular impacts on the float of the oil level gauge. After a period of operation, fine cracks gradually appear on the surface of the float. As the impact continues, the cracks expand, eventually leading to float breakage. Insulating oil seeps into the float, causing it to lose its buoyancy and become unable to accurately track oil level changes. Consequently, the oil level data displayed on the gauge does not match the actual level. Utility Model Content

[0005] This utility model discloses a novel oil-immersed transformer with an oil level gauge, aiming to solve the technical problem that in traditional oil-immersed transformers with novel oil level gauges, during transformer operation, especially under conditions of load fluctuations and start-up and shutdown operations, the oil flow in the tank will generate severe impacts. These impacts directly act on the float, causing the float to bear large instantaneous pressure, which can easily lead to problems such as cracks and damage to the float, thus affecting the accuracy of oil level monitoring.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A novel oil-immersed transformer with an oil level gauge includes an oil level gauge body. A second connecting cylinder is connected to the bottom outer wall of the oil level gauge body. A first connecting cylinder is connected to the outer wall of the second connecting cylinder. The transformer body is connected to the bottom outer wall of the first connecting cylinder. The transformer body further includes: a protective mechanism: the protective mechanism includes a connecting rod disposed inside the oil level gauge body. A fixing rod is connected to the bottom outer wall of the connecting rod. A float is connected to the end of the fixing rod away from the connecting rod. The outer walls of the connecting rod and the float are connected to the same rubber sleeve. Two symmetrically distributed clamps are connected to both ends of the rubber sleeve. A hinge is connected to one side of the outer wall of the two clamps. A bolt is connected to the outer wall of the two clamps away from the hinge. A nut is connected to one end of the bolt. A washer is connected between the bolt and the nut. A display mechanism: the display mechanism is located on the top outer wall of the connecting rod.

[0008] In this design, the protective mechanism includes a connecting rod located inside the oil level gauge body. The connecting rod connects the float and the display mechanism. A fixing rod is connected to the bottom outer wall of the connecting rod, serving to connect to and support the float. The end of the fixing rod furthest from the connecting rod is connected to the float, which moves up and down with the oil level using its own buoyancy to sense changes in oil level. A rubber sleeve, made of high-strength, oil-resistant rubber, connects the connecting rod and the float. This rubber sleeve, by wrapping the connection between the connecting rod and the float, buffers the pressure of the oil flow impact and reduces damage from rigid collisions. Two symmetrically distributed clamps are connected to both ends of the rubber sleeve. The middle clamp is made of metal and can hold the end of the rubber sleeve. The outer wall of both clamps is connected to the same hinge, which allows the two clamps to open and close flexibly and form a stable ring structure when closed. At this time, the outer wall of the two clamps away from the hinge is connected to the same bolt. The bolt passes through the corresponding hole of the two clamps and engages with the nut through the thread, thereby firmly locking the clamps and preventing the rubber sleeve from loosening or falling off due to stress during long-term use. This ensures that the rubber sleeve always fits tightly against the outer wall of the connecting rod and the float. A washer is connected between the bolt and the nut. The washer is made of elastic metal and plays a role in preventing loosening and reducing the loosening of the threads caused by vibration.

[0009] In a preferred embodiment, the display mechanism includes a first display panel connected to the top outer wall of the connecting rod, a second display panel connected to the top outer wall of the first display panel, a plurality of glass windows arranged in a ring array on the outer wall of the oil level gauge body near the first display panel, a photosensitive plate installed on one side outer wall of the oil level gauge body, two LED strips fixed on the inner wall of the oil level gauge body near the first display panel, the same photosensitive plate connected to the outer wall of the two LED strips away from the first display panel, and a plurality of equally spaced LED beads installed on the outer wall of the LED strips near the first display panel.

[0010] In this design, the display mechanism includes a first display panel connected to the top outer wall of the connecting rod. The first and second display panels form a display panel group. The first display panel is blue, and its surface displays the oil level scale, visually reflecting the oil level. It can move synchronously with the connecting rod. A second display panel, red in color, is connected to the top outer wall of the first display panel. This second display panel, working in conjunction with the first display panel, enhances the clarity of the oil level indication. The inner wall of the oil level gauge body has multiple glass windows arranged in a circular array. These windows are made of high-transmittance, oil-resistant glass. The oil level gauge has a glass window for operators to observe the indication information of the display panel assembly. A photosensitive plate is installed on one outer wall of the oil level gauge body. The photosensitive plate can detect the ambient light intensity and provide a signal for adjusting the brightness of the light strips. Two light strips are fixed on the inner wall of the oil level gauge body near the first display panel. The light strips have a power supply inside and are flexible circuit board structures. At the same time, multiple equally spaced LED beads are fixed on the outer wall of the side near the display panel assembly. The LED beads are low-power LED light sources that can illuminate the first and second display panels to ensure clear readings even in low light conditions.

[0011] As described above, a novel oil-immersed transformer with an oil level gauge includes an oil level gauge body. A second connecting cylinder is connected to the bottom outer wall of the oil level gauge body, and a first connecting cylinder is connected to the outer wall of the second connecting cylinder. The transformer body is connected to the bottom outer wall of the first connecting cylinder. The transformer body further includes: a protective mechanism: the protective mechanism includes a connecting rod disposed inside the oil level gauge body. A fixing rod is connected to the bottom outer wall of the connecting rod. A float is connected to the end of the fixing rod away from the connecting rod. The outer walls of the connecting rod and the float are connected to the same rubber sleeve. Two symmetrically distributed clamps are connected to both ends of the rubber sleeve. A hinge is connected to one side of the outer wall of the two clamps. A bolt is connected to the outer wall of the two clamps away from the hinge. A nut is connected to one end of the bolt, and a washer is connected between the bolt and the nut. A display mechanism: the display mechanism is located on the top outer wall of the connecting rod. The oil-immersed transformer of the novel oil level gauge provided by this utility model has the technical effect of reducing the risk of float damage by buffering the pressure on the float caused by oil flow impact, and achieving clear reading of oil level information even in low light environment by providing illumination to the observation window. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of an oil-immersed transformer for a novel oil level gauge proposed in this utility model.

[0013] Figure 2 This is a schematic diagram of the connecting rod structure of a novel oil level gauge for an oil-immersed transformer, as proposed in this utility model.

[0014] Figure 3 This is a schematic diagram of the display mechanism of an oil-immersed transformer for a novel oil level gauge proposed in this utility model.

[0015] Figure 4 This is a schematic diagram of the protective mechanism of a novel oil level gauge for an oil-immersed transformer, as proposed in this utility model.

[0016] Figure 5 This is a schematic diagram of the clamping structure of a novel oil level gauge for an oil-immersed transformer proposed in this utility model.

[0017] In the attached diagram: 1. Oil level gauge body; 2. First connecting cylinder; 3. Transformer body; 4. Second connecting cylinder; 5. Float; 6. Connecting rod; 7. Rubber sleeve; 8. LED strip; 9. Glass window; 10. LED bead; 11. First display panel; 12. Photosensitive plate; 13. Second display panel; 14. Fixing rod; 15. Clamp; 16. Hinge; 17. Bolt; 18. Nut; 19. Washer; 20. Limiting plate. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0019] The novel oil level gauge disclosed in this utility model is mainly applied to oil-immersed transformers of traditional oil level gauges. During the operation of the transformer, especially under conditions such as load fluctuations and start-up and shutdown operations, the oil flow in the tank will generate a violent impact. This impact directly acts on the float, causing the float to bear a large instantaneous pressure, which can easily lead to problems such as cracks and damage to the float, affecting the accuracy of oil level monitoring.

[0020] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 A novel oil-immersed transformer with an oil level gauge includes an oil level gauge body 1. A second connecting cylinder 4 is connected to the bottom outer wall of the oil level gauge body 1. A first connecting cylinder 2 is connected to the outer wall of the second connecting cylinder 4. A transformer body 3 is connected to the bottom outer wall of the first connecting cylinder 2. The transformer body 3 is also connected to the second connecting cylinder 1. The transformer body 3 further includes: a protective mechanism: the protective mechanism includes a connecting rod 6 disposed inside the oil level gauge body 1. A fixing rod 14 is connected to the bottom outer wall of the connecting rod 6. A float 5 is connected to the end of the fixing rod 14 away from the connecting rod 6. The outer walls of the connecting rod 6 and the float 5 are connected to the same rubber sleeve 7. Two symmetrically distributed clamps 15 are connected to both ends of the rubber sleeve 7. A hinge 16 is connected to one side of the outer wall of the two clamps 15. A bolt 17 is connected to the outer wall of the two clamps 15 away from the hinge 16. A nut 18 is connected to one end of the bolt 17. A washer 19 is connected between the bolt 17 and the nut 18. A display mechanism is also included.

[0021] The display mechanism is located on the top outer wall of the connecting rod 6.

[0022] The protective mechanism includes a connecting rod 6 installed inside the oil level gauge body 1. The connecting rod 6 connects the float 5 and the display mechanism. A fixing rod 14 is connected to the bottom outer wall of the connecting rod 6. The fixing rod 14 connects to and supports the float 5. The end of the fixing rod 14 away from the connecting rod 6 is connected to the float 5. The float 5 moves up and down with the rise and fall of the oil level due to its own buoyancy, which is used to sense changes in the oil level. At this time, the same rubber sleeve 7 is connected to the outer wall of the connecting rod 6 and the float 5. The rubber sleeve 7 is made of high-strength oil-resistant rubber. The rubber sleeve 7 wraps around the connection part between the connecting rod 6 and the float 5, which can buffer the pressure of the oil flow impact and reduce the damage caused by rigid collision. At this time, two symmetrically distributed clamps 15 are connected to the two ends of the rubber sleeve 7. The clamps 15 are made of metal. The material can hold the end of the rubber sleeve 7. The outer wall of one side of the two clamps 15 is connected to the same hinge 16. The hinge 16 allows the two clamps 15 to open and close flexibly and form a stable ring structure when closed. At this time, the outer wall of the two clamps 15 away from the hinge 16 is connected to the same bolt 17. The bolt 17 passes through the corresponding hole of the two clamps 15 and is threaded with the nut 18 to firmly lock the clamps 15, preventing the rubber sleeve 7 from loosening or falling off due to force during long-term use. It ensures that the rubber sleeve 7 always fits tightly against the outer wall of the connecting rod 6 and the float 5. At this time, a washer 19 is connected between the bolt 17 and the nut 18. The washer 19 is made of elastic metal material, which plays an anti-loosening role and reduces the loosening of the threads caused by vibration.

[0023] The connecting rod 6 has a connecting cavity inside. The end of the fixing rod 14 away from the float 5 is connected to the inner wall of the connecting cavity. The connecting cavity provides installation space for the fixing rod 14, allowing the fixing rod 14 to penetrate deep into the connecting rod 6, thus enhancing the firmness of the connection between the two.

[0024] Specifically, two of the clamps 15 are connected to the outer wall of the connecting rod 6 near the float 5, and two other clamps 15 are connected to the outer wall of the float 5 near the connecting rod 6. By setting two clamps 15 on the connecting rod 6 and the float 5 respectively, the rubber sleeve 7 can be fixed from both ends.

[0025] Specifically, the outer diameter of the float 5 is the same as the inner diameter of the oil level gauge body 1. By moving the float 5 up and down against the inner wall of the oil level gauge body 1, it is avoided that it will collide with the inner wall of the oil level gauge body 1 due to excessive shaking.

[0026] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4In a preferred embodiment, the display mechanism includes a first display panel 11 connected to the top outer wall of the connecting rod 6, a second display panel 13 connected to the top outer wall of the first display panel 11, a plurality of glass windows 9 arranged in a ring array on the outer wall of the oil level gauge body 1 near the first display panel 11, a photosensitive plate 12 installed on one side outer wall of the oil level gauge body 1, two light strips 8 fixed on the inner wall of the oil level gauge body 1 near the first display panel 11, the same photosensitive plate 12 connected to the outer wall of the two light strips 8 away from the first display panel 11, and a plurality of equally spaced LED beads 10 installed on the outer wall of the light strips 8 near the first display panel 11.

[0027] The display mechanism includes a first display panel 11 connected to the top outer wall of the connecting rod 6. The first display panel 11 and the second display panel 13 constitute a display panel group. The first display panel 11 is blue, and the oil level scale on its surface directly reflects the oil level height. It can move synchronously with the connecting rod 6. At this time, the second display panel 13 is connected to the top outer wall of the first display panel 11. The second display panel 13 is red. By cooperating with the first display panel 11, the clarity of the oil level indication is enhanced. At this time, multiple glass windows 9 arranged in a ring array are provided on the inner wall of the oil level gauge body 1. The glass windows 9 are made of high light transmittance and oil-resistant glass. The oil level gauge body 1 is equipped with a photosensitive plate 12 on one side of its outer wall. The photosensitive plate 12 can detect the ambient light intensity and provide a signal for adjusting the brightness of the light strips 8. Two light strips 8 are fixed on the inner wall of the oil level gauge body 1 near the first display panel 11. The light strips 8 have a power supply inside and are flexible circuit board structures. At the same time, multiple equally spaced LED beads 10 are fixed on the outer wall of the side near the display panel assembly. The LED beads 10 are low-power LED light sources that can illuminate the first display panel 11 and the second display panel 13 to ensure clear readings even when the light is insufficient.

[0028] The multiple glass windows 9, the first display panel 11, and the second display panel 13 are at the same height. One light strip 8 is located on the top outer wall of the multiple glass windows 9, and the other light strip 8 is located on the bottom outer wall of the multiple glass windows 9. When viewed from the glass window 9, all the scale information of the display panel group can be observed completely. At this time, the two light strips 8 located on the top and bottom outer walls of the multiple glass windows 9 form a symmetrical lighting layout, reducing the dark corners of the display panel surface and improving the uniformity of lighting.

[0029] Reference Figure 3 and Figure 4 In a preferred embodiment, the top outer wall of the second display panel 13 is connected to a limiting plate 20, and the inside of the oil level gauge body 1 is provided with a limiting groove, with the limiting plate 20 connected to the inner wall of the limiting groove.

[0030] The top outer wall of the second display panel 13 is connected to a limiting plate 20. The limiting plate 20 can move synchronously with the second display panel 13, which serves to limit the overall movement range of the display mechanism. The oil level gauge body 1 is provided with a limiting groove inside, and the limiting plate 20 is connected to the inner wall of the limiting groove. At this time, the cooperation between the limiting plate 20 and the limiting groove can prevent the display mechanism from shifting laterally during movement, ensuring that the first display panel 11 and the second display panel 13 are always facing the glass window 9. At the same time, it limits the maximum movement stroke of the display mechanism to avoid damage to the components due to excessive movement.

[0031] Working principle: During use, when the insulating oil level inside the transformer body 3 changes, the float 5 located inside the oil level gauge body 1 moves up and down with the oil level due to its own buoyancy. At this time, the float 5 is connected to the connecting rod 6 through the fixed rod 14, which extends into the connecting cavity inside the connecting rod 6, enhancing the firmness of the connection between the two. This allows the motion energy of the float 5 to be stably transmitted to the connecting rod 6. At this time, due to the impact generated by the oil flow during transformer operation, the high-strength oil-resistant rubber sleeve 7 wrapped around the outer wall of the connecting rod 6 and the float 5 buffers the pressure of the oil flow impact through its own elastic deformation, reducing the impact of rigid collisions on the connecting rod 6. Damage to the joint is addressed by two symmetrically distributed clamps 15 at both ends of the rubber sleeve 7. These clamps 15 open and close flexibly via hinges 16. Once closed, they are locked in place by the threaded engagement of bolts 17 and nuts 18, and by washers 19. The washers 19, made of elastic metal, between the bolts 17 and nuts 18, reduce thread loosening caused by vibration, ensuring a tight fit for the rubber sleeve 7. The outer diameter of the float 5 matches the inner diameter of the oil level gauge body 1, preventing collisions with the inner wall due to excessive shaking. Furthermore, the connecting rod 6 synchronously transmits the displacement of the float 5 to the top. The display mechanism includes a first display panel 11 that moves with the connecting rod 6. The oil level scale on its surface visually reflects the oil level. A second display panel 13 connected to the top of the first display panel 11 uses red to create a high contrast with the blue of the first display panel 11. Multiple annular array glass windows 9 on the outer wall of the oil level gauge body 1 are made of high-transmittance, oil-resistant glass, allowing operators to observe the display information from different angles. The glass windows 9, the first display panel 11, and the second display panel 13 are at the same height to ensure complete visibility of the displayed information. When ambient light is insufficient, the photosensitive plate 12 on one side of the oil level gauge body 1... The light intensity is detected, and the operation of two light strips 8 fixed on the inner wall is controlled. The light strips 8 have a flexible circuit board structure, and multiple low-power LED beads 10 distributed at equal intervals near the side of the display panel emit light. The two light strips 8 are located at the top and bottom of the glass window 9, respectively, forming a symmetrical lighting layout, reducing blind spots, and ensuring clear readings even in low light. In addition, the limiting plate 20 at the top of the second display panel 13 moves in the limiting groove inside the oil level gauge body 1, which can prevent the display mechanism from shifting laterally, ensuring that the display panel is always facing the glass window 9, while limiting the maximum movement stroke to avoid damage to components due to excessive movement.

[0032] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A novel oil-immersed transformer with an oil level gauge, comprising an oil level gauge body (1), wherein a second connecting cylinder (4) is connected to the bottom outer wall of the oil level gauge body (1), a first connecting cylinder (2) is connected to the outer wall of the second connecting cylinder (4), and a transformer body (3) is connected to the bottom outer wall of the first connecting cylinder (2), characterized in that, Also includes: Protective mechanism: The protective mechanism includes a connecting rod (6) disposed inside the oil level gauge body (1). A fixing rod (14) is connected to the bottom outer wall of the connecting rod (6). A float (5) is connected to the end of the fixing rod (14) away from the connecting rod (6). The outer walls of the connecting rod (6) and the float (5) are connected to the same rubber sleeve (7). Two symmetrically distributed clamps (15) are connected to both ends of the rubber sleeve (7). The same hinge (16) is connected to one side outer wall of the two clamps (15). The same bolt (17) is connected to the side outer wall of the two clamps (15) away from the hinge (16). A nut (18) is connected to one end of the bolt (17). A washer (19) is connected between the bolt (17) and the nut (18).

2. The oil-immersed transformer with a novel oil level gauge according to claim 1, characterized in that, The connecting rod (6) has a connecting cavity inside, and the end of the fixing rod (14) away from the float (5) is connected to the inner wall of the connecting cavity.

3. The oil-immersed transformer with a novel oil level gauge according to claim 1, characterized in that, Two of the clamps (15) used in conjunction are connected to the outer wall of the connecting rod (6) near the float (5), and the other two clamps (15) used in conjunction are connected to the outer wall of the float (5) near the connecting rod (6).

4. The oil-immersed transformer with a novel oil level gauge according to claim 1, characterized in that, The outer diameter of the float (5) is the same as the inner diameter of the oil level gauge body (1).

5. The oil-immersed transformer with a novel oil level gauge according to claim 1, characterized in that, It also includes a display mechanism located on the top outer wall of the connecting rod (6). The display mechanism includes a first display panel (11) connected to the top outer wall of the connecting rod (6). A second display panel (13) is connected to the top outer wall of the first display panel (11). The outer wall of the oil level gauge body (1) near the first display panel (11) is provided with a plurality of glass windows (9) arranged in a ring array. A photosensitive plate (12) is installed on one side outer wall of the oil level gauge body (1). Two light strips (8) are fixed on the inner wall of the oil level gauge body (1) near the first display panel (11). The two light strips (8) are connected to the same photosensitive plate (12) on the outer wall of the side away from the first display panel (11). A plurality of equally spaced LED beads (10) are installed on the outer wall of the side of the light strips (8) near the first display panel (11).

6. The oil-immersed transformer with a novel oil level gauge according to claim 5, characterized in that, The multiple glass windows (9), the first display panel (11) and the second display panel (13) are at the same height, and one of the light strips (8) is located on the top outer wall of the multiple glass windows (9) and the other light strip (8) is located on the bottom outer wall of the multiple glass windows (9).

7. The oil-immersed transformer with a novel oil level gauge according to claim 5, characterized in that, The top outer wall of the second display panel (13) is connected to a limiting plate (20), and the inside of the oil level gauge body (1) is provided with a limiting groove, and the limiting plate (20) is connected to the inner wall of the limiting groove.

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