Pressure-maintaining sealing detection device for oil-immersed transformer

Abstract

The invention discloses an oil-immersed transformer pressure-maintaining sealing detection device, and relates to the technical field of sealing detection, the oil-immersed transformer pressure-maintaining sealing detection device comprises a box body, four fixing mechanisms in annular distribution are movably mounted at four corners of the bottom of the box body, a lifting mechanism is fixedly mounted at the bottom of each fixing mechanism, and the box body is placed in the middle of the top of the lifting mechanism; a sealing detection box is arranged on the outer side of the lifting mechanism, a circulating mechanism is fixedly installed in the middle of the bottom of the sealing detection box, and supporting legs are fixedly installed at the four corners of the bottom of the sealing detection box. According to the pressure-maintaining sealing detection device for the oil-immersed transformer, a solution at the bottom of the inner cavity of the sealing detection box can be conveniently guided by the inclined plane, so that the solution can better enter the inner cavity of the liquid collecting hopper from the inner cavity of the sealing detection box, and the filter screen is mainly used for separating the solution precipitated at the bottom of the solution from impurities; therefore, impurities are located above the filter screen at the top of the inner cavity of the liquid collecting hopper, and the solid-liquid separation effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of seal detection, and in particular to a pressure-maintaining seal detection device for an oil-immersed transformer. Background Art

[0002] The body of the oil-immersed transformer (windings and core) is installed in an oil tank filled with transformer oil to protect the transformer and extend its service life. During the production of the oil tank, it is necessary to conduct a sealing test on the oil tank to ensure the sealing and pressure-maintaining performance of the oil tank. When testing the oil tank, it is generally immersed in water and then observed whether there are bubbles around the oil tank to judge the sealing of the oil tank.

[0003] The existing technology has the following problems:

[0004] However, due to the large volume of the oil tank, the buoyancy it is subjected to is also large, making it inconvenient for users to fix the oil tank, resulting in the oil tank being very easy to float to the surface during the detection process. Moreover, since the oil tank is located in water, users can only judge whether the oil tank has an air leak from the water surface, and cannot accurately observe the air leak point of the oil tank, which is very inconvenient for users to use. Therefore, we propose an oil-immersed transformer pressure-maintaining seal detection device to solve the above problems. Summary of the Invention

[0005] The present invention provides a pressure-maintaining and sealing detection device for an oil-immersed transformer to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A pressure-maintaining seal detection device for an oil-immersed transformer comprises a box body, four annularly distributed fixing mechanisms movably mounted at the four corners of the bottom of the box body, a lifting mechanism fixedly mounted at the bottom of the fixing mechanism, and the box body is placed in the middle position of the top of the lifting mechanism, a sealing detection box is provided on the outside of the lifting mechanism, a circulation mechanism is fixedly mounted in the middle position of the bottom of the sealing detection box, and support legs are fixedly mounted at the four corners of the bottom of the sealing detection box.

[0008] Preferably, the circulation mechanism includes a liquid collecting hopper, a pump body is fixedly installed on one side of the outer wall of the liquid collecting hopper, and circulation pipes are fixedly installed on the input and output ends of the pump body. The bottom of the circulation pipe at the input end of the pump body is fixedly connected to the bottom of the liquid collecting hopper, and the top of the circulation pipe at the output end of the pump body passes through the left side of the outer wall of the sealing detection box, and a pipeline valve is fixedly connected to the other side of the outer wall of the liquid collecting hopper.

[0009] Preferably, the bottom of the inner cavity of the sealing detection box is provided with an inclined surface, the top of the inner cavity of the liquid collecting hopper is fixedly connected with a filter screen, and the filter screen is located at the bottom position of the pipeline valve.

[0010] Preferably, the lifting mechanism includes a motor and a support guide plate, the left side of the motor is fixedly installed on the bottom of the right side of the sealing detection box, the output end of the motor passes through the right part of the sealing detection box and is fixedly connected to a screw, the left and right positions of the outer surface of the screw are threadedly connected to cross plates, the left and right ends of the two cross plates are rotatably connected to connecting plates and the two connecting plates at the same end are placed crosswise, and the support guide plate is located between the bottom of the box and the top of the connecting plate.

[0011] Preferably, the outer end of the connecting plate is rotatably connected to a slider, the outer wall of the slider at the bottom is slidably connected to a guide groove plate, the side of the guide groove plate away from the screw is fixedly connected to the bottom of the inner wall of the sealing detection box, and the outer side of the slider at the top is slidably connected to the inner wall of the bottom of the support guide plate.

[0012] Preferably, four vertical guide plates are fixedly connected to the inner wall of the sealing detection box, and the inner walls of the vertical guide plates are slidably connected to the middle parts of the four sides of the support guide plates.

[0013] Preferably, the fixing mechanism includes a mounting plate, the bottom of the mounting plate is fixedly connected to the edge of the top of the support guide plate, the top of the mounting plate is rotatably connected to an adjusting stud near the box body, the outer wall of the adjusting stud is threadedly connected to a mounting frame near the box body, the mounting frame is slidably connected to a mounting block near the inner wall of the box body, and the bottom of the mounting block is rotatably connected to three groups of linearly distributed rollers.

[0014] Preferably, the bottom of the mounting frame is slidably connected to a guide bar, the bottom of the guide bar is slidably connected to the upper surface of the support guide plate, the top of the mounting frame is rotatably connected to an adjusting screw, the bottom of the outer wall of the adjusting screw is threadedly connected to the top of the mounting block, and the two ends of the mounting block close to the adjusting screw are fixedly connected to guide columns, and the outer wall of the guide column is slidably connected to the top position of the mounting frame.

[0015] Due to the adoption of the above technical solution, the present invention has the following technical advancements compared to the prior art:

[0016] 1. The present invention provides a pressure-maintaining and sealing detection device for an oil-immersed transformer, which utilizes the function of a vertical guide plate to guide the support guide plate when it moves up and down, thereby reducing the friction between the edge of the support guide plate and the inner wall of the sealing detection box, thereby improving the service life of the components.

[0017] 2. The present invention provides a pressure-maintaining and sealing detection device for an oil-immersed transformer. By utilizing the functions of guide bars and guide columns, the movement of the mounting frame and the mounting block can be guided respectively, thereby better controlling the positions of the mounting frame and the mounting block, so as to better fix the edge of the bottom of the box.

[0018] 3. The present invention provides an oil-immersed transformer pressure-maintaining seal detection device, wherein the inclined surface facilitates the diversion of the solution at the bottom of the inner cavity of the seal detection box, so that the solution can better enter the inner cavity of the liquid collecting hopper from the inner cavity of the seal detection box. The filter screen mainly separates the solution and impurities precipitated at the bottom of the solution, so that the impurities are above the top filter screen of the inner cavity of the liquid collecting hopper, thereby achieving the effect of solid-liquid separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 Schematic diagram of the cross-section internal structure of the sealing detection box of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the circulation mechanism of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the lifting mechanism of the present invention;

[0023] Figure 5 It is a schematic diagram of the cooperation structure between the fixing mechanism and the box body of the present invention;

[0024] Figure 6 It is a schematic cross-sectional structural diagram of the fixing mechanism of the present invention.

[0025] In the figure: 1. Support leg; 2. Sealing detection box; 3. Circulation mechanism; 31. Circulation pipe; 32. Pump body; 33. Liquid collecting bucket; 34. Filter screen; 35. Pipe valve; 36. Inclined surface; 4. Lifting mechanism; 41. Motor; 42. Vertical guide plate; 43. Screw; 44. Horizontal plate; 45. Slider; 46. Guide plate; 47. Support guide plate; 48. Connecting plate; 5. Fixing mechanism; 51. Mounting plate; 52. Adjusting stud; 53. Guide bar; 54. Mounting frame; 55. Adjusting screw; 56. Guide column; 57. Mounting block; 58. Roller; 6. Box body. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0027] like Figure 1 and Figure 2As shown, a pressure-maintaining seal detection device for an oil-immersed transformer includes a box body 6, four annularly distributed fixing mechanisms 5 are movably installed at the four corners of the bottom of the box body 6, a lifting mechanism 4 is fixedly installed at the bottom of the fixing mechanism 5, and the box body 6 is placed in the middle position of the top of the lifting mechanism 4, a seal detection box 2 is provided on the outside of the lifting mechanism 4, a circulation mechanism 3 is fixedly installed in the middle position of the bottom of the seal detection box 2, and support legs 1 are fixedly installed at the four corners of the bottom of the seal detection box 2.

[0028] The oil tank of the oil-immersed transformer is tested for sealing performance by immersion, so as to prevent leakage of the oil-immersed transformer during use.

[0029] like Figure 3 As shown, the circulation mechanism 3 includes a liquid collecting hopper 33, a pump body 32 is fixedly installed on one side of the outer wall of the liquid collecting hopper 33, and a circulation pipe 31 is fixedly installed at the input and output ends of the pump body 32. The bottom of the circulation pipe 31 at the input end of the pump body 32 is fixedly connected to the bottom of the liquid collecting hopper 33, and the top of the circulation pipe 31 at the output end of the pump body 32 passes through the left side of the outer wall of the sealing detection box 2, and a pipeline valve 35 is fixedly connected to the other side of the outer wall of the liquid collecting hopper 33.

[0030] When the solution in the inner cavity of the sealing detection box 2 is circulated, the pump body 32 is used to pump the solution into the inner cavity of the liquid collecting hopper 33, so that the solution enters from the bottom of the circulation pipe 31 and is pumped into the inner cavity of the sealing detection box 2 from the top of the circulation pipe 31, so that impurities in the solution enter the top of the inner cavity of the liquid collecting hopper 33 and are discharged from the position of the pipeline valve 35.

[0031] like Figure 3 As shown, the bottom of the inner cavity of the sealing detection box 2 is provided with an inclined surface 36 , the top of the inner cavity of the liquid collecting hopper 33 is fixedly connected with a filter screen 34 and the filter screen 34 is located at the bottom position of the pipeline valve 35 .

[0032] The inclined surface 36 facilitates the diversion of the solution at the bottom of the inner cavity of the sealed detection box 2, so that the solution can better enter the inner cavity of the liquid collecting bucket 33 from the inner cavity of the sealed detection box 2; the filter screen 34 is mainly used to separate the solution and impurities precipitated at the bottom of the solution, so that the impurities are above the top filter screen 34 of the inner cavity of the liquid collecting bucket 33, thereby achieving the effect of solid-liquid separation.

[0033] like Figure 2 and Figure 4As shown, the lifting mechanism 4 includes a motor 41 and a support guide plate 47. The left side of the motor 41 is fixedly installed on the bottom of the right side of the sealing detection box 2. The output end of the motor 41 passes through the right part of the sealing detection box 2 and is fixedly connected to a screw 43. The left and right positions of the outer surface of the screw 43 are threadedly connected to cross plates 44. The left and right ends of the two cross plates 44 are rotatably connected to connecting plates 48, and the two connecting plates 48 at the same end are placed crosswise. The support guide plate 47 is located between the bottom of the box body 6 and the top of the connecting plate 48.

[0034] The starting motor 41 can drive the screw 43 to rotate, so that the two horizontal plates 44 can be moved relative to or oppositely, so as to control the position of the bottom of the left and right connecting plates 48, thereby moving the support guide plate 47 up and down, so as to adjust the height of the support guide plate 47 in the inner cavity of the sealing detection box 2, thereby facilitating the control of the position of the box body 6 in the inner cavity of the sealing detection box 2;

[0035] The middle parts of the two cross-placed connecting plates 48 are rotatably connected.

[0036] like Figure 2 and Figure 4 As shown, the outer end of the connecting plate 48 is rotatably connected to the slider 45, and the outer wall of the bottom slider 45 is slidably connected to the guide groove plate 46. The side of the guide groove plate 46 away from the screw 43 is fixedly connected to the bottom of the inner wall of the sealing detection box 2, and the outer side of the top slider 45 is slidably connected to the inner wall of the bottom of the support guide plate 47.

[0037] The sliding connection between the slider 45 and the guide plate 46 and the support guide plate 47 is used to guide the movement of the upper and lower ends of the connecting plate 48 so as to stably control the height of the support guide plate 47.

[0038] like Figure 2 and Figure 4 As shown, four vertical guide plates 42 are fixedly connected to the inner wall of the sealing detection box 2 , and the inner walls of the vertical guide plates 42 are slidably connected to the middle parts of the four sides of the support guide plates 47 .

[0039] The vertical guide plate 42 is used to guide the support guide plate 47 when it moves up and down, thereby reducing the friction between the edge of the support guide plate 47 and the inner wall of the sealing detection box 2, thereby improving the service life of the component.

[0040] like Figure 5 and Figure 6As shown, the fixing mechanism 5 includes a mounting plate 51, the bottom of the mounting plate 51 is fixedly connected to the edge of the top of the support guide plate 47, the top of the mounting plate 51 is rotatably connected to an adjusting stud 52 near the box body 6, the outer wall of the adjusting stud 52 is threadedly connected to a mounting frame 54 near the box body 6, the mounting frame 54 is slidably connected to a mounting block 57 near the inner wall of the box body 6, and the bottom of the mounting block 57 is rotatably connected to three groups of linearly distributed rollers 58.

[0041] By rotating the adjusting stud 52, the mounting frame 54 can be pushed under the action of the threaded connection, and then rotating the adjusting screw 55 again, the mounting block 57 can be pushed downward under the action of the threaded connection, so that the roller 58 can be pressed and fixed to the edge of the bottom of the box body 6.

[0042] like Figure 5 and Figure 6 As shown, the bottom of the mounting frame 54 is slidably connected to the guide bar 53, the bottom of the guide bar 53 is slidably connected to the upper surface of the support guide plate 47, the top of the mounting frame 54 is rotatably connected to the adjusting screw 55, the bottom of the outer wall of the adjusting screw 55 is threadedly connected to the top of the mounting block 57, and the two ends of the mounting block 57 close to the side of the adjusting screw 55 are fixedly connected to the guide column 56, and the outer wall of the guide column 56 is slidably connected to the top position of the mounting frame 54.

[0043] The guide bars 53 and the guide posts 56 can be used to guide the movement of the mounting frame 54 and the mounting block 57 respectively, so as to better control the positions of the mounting frame 54 and the mounting block 57 and better fix the bottom edge of the box body 6.

[0044] The working principle of the present invention is as follows: first, an appropriate amount of solution is injected into the inner cavity of the sealing detection box 2, and the motor 41 is started to drive the screw 43 to rotate, so that the two horizontal plates 44 can be moved relative to each other, thereby controlling the connecting plate 48, and the support guide plate 47 can be pushed upward under the guidance of the vertical guide plate 42, and then the box body 6 is placed in the middle position of the upper surface of the support guide plate 47, and then the adjusting stud 52 is rotated to push the mounting frame 54 under the action of the threaded connection, and then the adjusting screw 55 is rotated again to push the mounting block 57 downward under the action of the threaded connection, so that the roller 58 can be pressed and fixed to the edge of the bottom of the box body 6, and then the motor 41 is started again to drive the screw 43 to flip, thereby moving the support guide plate 47 downward, and the box body 6 is completely immersed in the solution in the inner cavity of the sealing detection box 2, and the sealing of the box body 6 can be measured by checking whether there are bubbles.

[0045] When inspecting multiple boxes 6, some debris will enter the solution in the inner cavity of the sealed inspection box 2. When the box 6 is not inspected, the pump body 32 can be started to pump the solution into the inner cavity of the liquid collecting hopper 33, so that the solution enters from the bottom of the circulation pipe 31 and is pumped into the inner cavity of the sealed inspection box 2 from the top of the circulation pipe 31, so that the impurities in the solution enter the top of the inner cavity of the liquid collecting hopper 33 and are discharged from the position of the pipeline valve 35 when it is opened.

[0046] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure-maintaining and sealing detection device for an oil-immersed transformer, comprising a box (6), characterized in that: Four annularly distributed fixing mechanisms (5) are movably mounted at the four corners of the bottom of the box (6); a lifting mechanism (4) is fixedly mounted at the bottom of the fixing mechanism (5); and the box (6) is placed at the middle position of the top of the lifting mechanism (4); a sealing detection box (2) is arranged on the outside of the lifting mechanism (4); a circulation mechanism (3) is fixedly mounted at the middle position of the bottom of the sealing detection box (2); and support legs (1) are fixedly mounted at the four corners of the bottom of the sealing detection box (2).

2. The oil-immersed transformer pressure-maintaining and sealing detection device according to claim 1, characterized in that: The circulation mechanism (3) includes a liquid collecting hopper (33), a pump body (32) is fixedly installed on one side of the outer wall of the liquid collecting hopper (33), and a circulation pipe (31) is fixedly installed at the input and output ends of the pump body (32). The bottom of the circulation pipe (31) at the input end of the pump body (32) is fixedly connected to the bottom of the liquid collecting hopper (33), and the top of the circulation pipe (31) at the output end of the pump body (32) passes through the left side of the outer wall of the sealing detection box (2). The other side of the outer wall of the liquid collecting hopper (33) is fixedly connected to a pipeline valve (35).

3. The oil-immersed transformer pressure-maintaining and sealing detection device according to claim 2, characterized in that: The bottom of the inner cavity of the sealing detection box (2) is provided with an inclined surface (36), and the top of the inner cavity of the liquid collecting hopper (33) is fixedly connected with a filter screen (34), and the filter screen (34) is located at the bottom position of the pipeline valve (35).

4. The oil-immersed transformer pressure-maintaining and sealing detection device according to claim 1, characterized in that: The lifting mechanism (4) comprises a motor (41) and a support guide plate (47). The left side of the motor (41) is fixedly installed with the bottom of the right side of the sealing detection box (2). The output end of the motor (41) passes through the right part of the sealing detection box (2) and is fixedly connected with a screw rod (43). The left and right positions of the outer surface of the screw rod (43) are both threadedly connected with a transverse plate (44). The left and right ends of the two transverse plates (44) are rotatably connected with a connecting plate (48), and the two connecting plates (48) at the same end are placed crosswise. The support guide plate (47) is located between the bottom of the box body (6) and the top of the connecting plate (48).

5. The oil-immersed transformer pressure-maintaining and sealing detection device according to claim 4, characterized in that: The outer end of the connecting plate (48) is rotatably connected to a slider (45), and the outer wall of the slider (45) at the bottom is slidably connected to a guide plate (46). The side of the guide plate (46) away from the screw (43) is fixedly connected to the bottom of the inner wall of the sealing detection box (2), and the outer side of the slider (45) at the top is slidably connected to the inner wall of the bottom of the support guide plate (47).

6. The oil-immersed transformer pressure-maintaining and sealing detection device according to claim 4, characterized in that: Four vertical guide plates (42) are fixedly connected to the inner wall of the sealing detection box (2), and the inner walls of the vertical guide plates (42) are slidably connected to the middle parts of the four sides of the support guide plates (47).

7. The oil-immersed transformer pressure-maintaining and sealing detection device according to claim 1, characterized in that: The fixing mechanism (5) comprises a mounting plate (51), the bottom of the mounting plate (51) is fixedly connected to the edge of the top of the support guide plate (47), the top of the mounting plate (51) is rotatably connected to an adjusting stud (52) near the box body (6), the outer wall of the adjusting stud (52) is threadedly connected to a mounting frame (54) near the box body (6), the mounting frame (54) is slidably connected to a mounting block (57) near the inner wall of the box body (6), and the bottom of the mounting block (57) is rotatably connected to three groups of linearly distributed rollers (58).

8. The oil-immersed transformer pressure-maintaining and sealing detection device according to claim 7, characterized in that: The bottom of the mounting frame (54) is slidably connected to a guide bar (53), the bottom of the guide bar (53) is slidably connected to the upper surface of the support guide plate (47), the top of the mounting frame (54) is rotatably connected to an adjusting screw (55), the bottom of the outer wall of the adjusting screw (55) is threadedly connected to the top of the mounting block (57), and the two ends of the mounting block (57) close to the side of the adjusting screw (55) are fixedly connected to guide columns (56), and the outer wall of the guide column (56) is slidably connected to the top position of the mounting frame (54).

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