A transformer insulation oil sampling device

Abstract

This utility model relates to the field of transformer testing technology, specifically disclosing a transformer insulating oil sampling device, including a shell. The shell is a hollow cuboid structure, and an outer cylinder is fixedly connected to the inner wall of the shell via a connecting rod. The outer cylinder is a hollow cylindrical structure, and an oil inlet pipe, a sampling pipe, an oil outlet pipe, and a sampling tube are respectively installed through the outer surface of the outer cylinder. This transformer insulating oil sampling device features a rotatably connected outer cylinder and inner cylinder. The inner cylinder has a three-way flow channel, and the flow channel between the pipes can be adjusted by rotating the inner cylinder. This allows the pipes inside the device to be flushed before sampling, removing residual air impurities and other substances that interfere with the experiment, improving the accuracy of insulating oil sampling, and making subsequent test data more accurate and reliable.

Description

Technical Field

[0001] This utility model relates to the field of transformer testing technology, specifically a transformer insulating oil sampling device. Background Technology

[0002] The insulating oil in a transformer plays a role in heat dissipation and insulation. Its performance directly affects the safety of power production and directly determines the service life of the transformer. By testing and analyzing the relevant indicators of the transformer insulating oil, we can make accurate judgments on the problems of faulty components, so as to take effective measures to deal with them scientifically, reduce the probability of failure, and ensure the continuous and stable operation of the transformer.

[0003] Before testing the insulating oil in a transformer, it is necessary to sample the insulating oil. Currently, insulating oil sampling is usually done by using an injection device to extract the sample from the transformer's drain valve. However, air impurities and other contaminants may remain in the pipeline, interfering with the experiment and affecting the quality of the insulating oil sample. Utility Model Content

[0004] The purpose of this invention is to provide a transformer insulating oil sampling device. This device is equipped with a multi-port sampling device formed by connecting multiple adjustable pipes, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a transformer insulating oil sampling device, comprising a shell, the shell being a hollow cuboid structure, an outer cylinder being fixedly connected to the inner wall of the shell via a connecting rod, the outer cylinder being a hollow cylindrical structure, an oil inlet pipe, a sampling pipe, an oil outlet pipe, and a sampling tube being respectively arranged through the outer surface of the outer cylinder, the oil inlet pipe, the sampling pipe, the oil outlet pipe, and the sampling tube forming a cross-shaped structure on the outer surface of the outer cylinder, the cross-shaped structure being inclined on the outer surface of the outer cylinder, the height of the oil inlet pipe in the cross-shaped structure being higher than that of the oil outlet pipe on the other side, the oil inlet pipe penetrating one side surface of the shell, the oil outlet pipe penetrating the other side surface of the shell, the sampling tube penetrating the upper surface of the shell, the sampling tube penetrating the upper surface of the connecting pipe, the connecting pipe penetrating the lower surface of the shell, the other end of the oil inlet pipe being connected to a connecting hose, the other end of the sampling tube being connected to an oil pump, and the oil pump being fixedly installed on the upper surface of the shell.

[0006] Preferably, the outer cylinder is provided with a flow channel adjustment structure. The flow channel adjustment structure realizes the flow channel adjustment between the pipes through the inner cylinder, thereby rinsing the pipes before the insulating oil is sampled and increasing the sampling accuracy.

[0007] By adopting the above technical solution, the flow channel adjustment structure can be used to adjust the flow channel between pipes in the device, thereby realizing the washing of the pipes before sampling.

[0008] Preferably, the flow channel adjustment structure includes an inner cylinder, the inner cylinder having a T-shaped three-way flow channel inside, the inner cylinder being rotatably mounted on the inner surface of the outer cylinder, the outer surface of the inner cylinder being fixedly connected to the output end of the motor, the output end of the motor penetrating the surface of the outer cylinder, and the motor being embedded and fixed on the surface of the outer shell.

[0009] By adopting the above technical solution, the switching process between pipelines can be realized by utilizing the rotation of the inner cylinder within the outer cylinder.

[0010] Preferably, the sampling tube is provided with a blocking structure inside, which blocks the insulating oil through a movable sliding plate to prevent the insulating oil from flowing out of the oil pump outlet.

[0011] By adopting the above technical solution, the insulating oil can be prevented from flowing out of the oil pump outlet by using the blocking structure.

[0012] Preferably, the blocking structure includes a connecting block, which is a hollow frustum structure with an open lower surface. The connecting block is fixedly installed on the inner wall of the sampling tube. The upper surface of the connecting block has a square opening. A sliding plate slides through the inner wall of the opening on the upper surface of the connecting block. Two sliding plates are symmetrically arranged, and the two sliding plates completely block the opening on the upper surface of the connecting block. A push block is provided on one side of the sliding plate. The push block has a trapezoidal structure, and the hypotenuse of the push block contacts the surface of the sliding plate. A round rod is provided on the lower surface of the push block and slides through the surface of the connecting block. The other end of the round rod on the surface of the push block is fixedly installed on the upper surface of a push plate. The push plate has a circular ring structure and is slidably connected to the inner wall of the sampling tube.

[0013] Using the above technical solution, insulating oil can be used to push the sliding plate to close the sampling tube.

[0014] Preferably, the lower surface of the outer shell is provided with a receiving structure, which supports the sampling bottle through a sliding support plate, facilitating the storage of insulating oil during the sampling process.

[0015] By adopting the above technical solution, the height of the sampling bottle can be adjusted using the receiving structure, which facilitates installation and disassembly.

[0016] Preferably, the receiving structure includes a support column, which is fixedly installed on the lower surface of the outer shell. A support plate is slidably connected to the outer surface of the support column. The upper surface of the support plate contacts the lower surface of the sampling bottle. The upper end of the sampling bottle is engaged with the outer surface of the connecting tube. An annular electromagnet is fixedly installed on the outer surface of the support column. A magnetic block is disposed above the electromagnet. The magnetic block is annular and slidably sleeved on the outer surface of the support column. The magnetic block is fixedly connected to the lower surface of the support plate. The magnetic poles of the electromagnet and the magnetic block repel each other.

[0017] Using the above technical solution, the movement of the support plate can be achieved by utilizing the repulsive force between the electromagnet and the magnetic block.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the transformer insulating oil sampling device:

[0019] 1. This device is equipped with an outer cylinder and an inner cylinder that are rotatably connected. The inner cylinder is equipped with a three-way flow channel. The flow channel between the pipes can be adjusted by rotating the inner cylinder. This allows the pipes in the device to be rinsed before sampling, removing residual air impurities and other substances that may interfere with the experiment. This improves the accuracy of insulating oil sampling and makes the subsequent test data more accurate and reliable.

[0020] 2. This device is equipped with an oil pump connected to the sampling tube to provide sampling power. The sampling tube is equipped with a connecting block and a sliding plate. The insulating oil drives the sliding plate to close the opening on the surface of the connecting block, thereby preventing the insulating oil from flowing out of the oil pump outlet, ensuring the smooth progress of the sampling process, and avoiding waste and environmental pollution caused by oil leakage.

[0021] 3. A support column is provided on the lower surface of the outer shell of this device. A support plate is slidably installed on the outer surface of the support column to support the sampling bottle. An electromagnet and a magnetic block with repulsion are provided on the outer surface of the support column. The repulsive force between the electromagnet and the magnetic block is used to tightly clamp the sampling bottle to the lower surface of the outer shell during the sampling process, so as to prevent it from falling off during the sampling process and to facilitate the adjustment of the height of the support plate, making it easy to place and remove the sampling bottle. Attached Figure Description

[0022] Figure 1 This is a front view structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of this utility model from below;

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

[0026] Figure 5 This is a schematic diagram of the orthographic section of the inner cylinder of this utility model;

[0027] Figure 6 This utility model Figure 5 Schematic diagram of the cross-sectional structure of the sampling tube at point A;

[0028] Figure 7 This is a schematic diagram of the front section structure of the connecting block of this utility model.

[0029] In the diagram: 1. Outer shell; 2. Outer cylinder; 3. Oil inlet pipe; 4. Sampling pipe; 5. Oil outlet pipe; 6. Sampling tube; 7. Connecting pipe; 8. Connecting hose; 9. Inner cylinder; 10. Motor; 11. Oil pump; 12. Connecting block; 13. Push block; 14. Push plate; 15. Slide plate; 16. Support column; 17. Support plate; 18. Sampling bottle; 19. Electromagnet; 20. Magnetic block. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-7 This utility model provides a technical solution: a transformer insulating oil sampling device, including a shell 1, an outer cylinder 2, an oil inlet pipe 3, a sampling pipe 4, an oil outlet pipe 5, a sampling tube 6, a connecting pipe 7, a connecting hose 8, an inner cylinder 9, a motor 10, an oil pump 11, a connecting block 12, a push block 13, a push plate 14, a sliding plate 15, a support column 16, a support plate 17, a sampling bottle 18, an electromagnet 19, and a magnetic block 20.

[0032] The outer shell 1 is a hollow cuboid structure. An outer cylinder 2 is fixedly connected to the inner wall of the outer shell 1 via a connecting rod. The outer cylinder 2 is a hollow cylindrical structure. An oil inlet pipe 3, a sampling pipe 4, an oil outlet pipe 5, and a sampling tube 6 are respectively installed through the outer surface of the outer cylinder 2. These pipes form a cross shape on the outer surface of the outer cylinder 2, and the cross shape is inclined. The height of the oil inlet pipe 3 in the cross shape is higher than that of the oil outlet pipe 5 on the other side. The oil inlet pipe 3 penetrates one side of the outer shell 1, the oil outlet pipe 5 penetrates the other side of the outer shell 1, the sampling tube 6 penetrates the upper surface of the outer shell 1, the sampling pipe 4 penetrates the upper surface of the connecting pipe 7, and the connecting pipe 7 penetrates... Located on the lower surface of the outer casing 1, the other end of the oil inlet pipe 3 is connected to a connecting hose 8, and the other end of the sampling pipe 6 is connected to an oil pump 11. The oil pump 11 is fixedly installed on the upper surface of the outer casing 1. The inner cylinder 2 is provided with a flow channel adjustment structure. The flow channel adjustment structure realizes the flow channel adjustment between the pipes through the inner cylinder 9, thereby rinsing the pipes before sampling the insulating oil and increasing the sampling accuracy. The flow channel adjustment structure includes an inner cylinder 9. The inner cylinder 9 is provided with a T-shaped three-way flow channel. The inner cylinder 9 is rotatably installed on the inner surface of the outer cylinder 2. The outer surface of the inner cylinder 9 is fixedly connected to the output end of the motor 10. The output end of the motor 10 passes through the surface of the outer cylinder 2. The motor 10 is embedded and fixed on the surface of the outer casing 1.

[0033] like Figure 1 , Figure 4 and Figure 5 As shown, when using this device to sample the insulating oil of a transformer, first connect the device to the transformer's drain valve using the connecting hose 8. Start the motor 10. The output end of the motor 10 drives the inner cylinder 9 to rotate 90 degrees on the inner surface of the outer cylinder 2, so that the three outlets of the three-way flow channel inside the inner cylinder 9 are aligned with the oil inlet pipe 3, the oil outlet pipe 5, and the sampling pipe 6, respectively. Start the oil pump 11. Under the suction of the oil pump 11, the insulating oil in the transformer enters the oil inlet pipe 3 through the connecting hose 8 and flows along the oil inlet pipe 3 into the three-way flow channel inside the inner cylinder 9. It then flows through the other two openings of the three-way flow channel to the oil outlet pipe 5 and the sampling pipe 6, respectively. Since the height of the oil inlet pipe 3 is higher than that of the oil outlet pipe 5, the insulating oil will be discharged along the oil outlet pipe 5, while the insulating oil in the sampling pipe 6 will be blocked by the blocking structure. Stop the oil pump 11. During this process, the pipes inside the device will be lubricated by the insulating oil, improving the subsequent sampling accuracy.

[0034] The sampling tube 6 has an internal blocking structure. The blocking structure blocks the insulating oil through a movable sliding plate 15, preventing the insulating oil from flowing out of the oil pump 11 outlet. The blocking structure includes a connecting block 12, which is a hollow frustum structure with an open lower surface. The connecting block 12 is fixedly installed on the inner wall of the sampling tube 6. The upper surface of the connecting block 12 has a square opening. The sliding plate 15 slides through the inner wall of the opening on the upper surface of the connecting block 12. Two sliding plates 15 are symmetrically arranged, and the two sliding plates 15 completely block the opening on the upper surface of the connecting block 12. A push block 13 is provided on one side of the sliding plate 15. The push block 13 has a trapezoidal structure, and the inclined side of the push block 13 contacts the surface of the sliding plate 15. A round rod is provided on the lower surface of the push block 13 and slides through the surface of the connecting block 12. The other end of the round rod on the surface of the push block 13 is fixedly installed on the upper surface of the push plate 14. The push plate 14 has a ring structure and slides on the inner wall of the sampling tube 6.

[0035] like Figure 5 , Figure 6 and Figure 7 As shown, during the rinsing process, before the oil pump 11 stops, the insulating oil flows into the sampling tube 6 under the suction of the oil pump 11. At this time, the insulating oil pushes the push plate 14 upward on the inner wall of the sampling tube 6. The push plate 14 drives the push block 13 to move upward. As the trapezoidal push block 13 slides upward, the inclined surface of the trapezoidal push block 13 will push the sliding plates 15 on both sides closer together. The sliding plates 15 block the opening on the surface of the connecting block 12 to prevent the insulating oil from flowing out of the outlet of the oil pump 11, ensuring that the oil does not leak during the sampling process.

[0036] A receiving structure is provided on the lower surface of the outer shell 1. The receiving structure supports the sampling bottle 18 through a sliding support plate 17, which facilitates the storage of insulating oil during the sampling process. The receiving structure includes a support column 16, which is fixedly installed on the lower surface of the outer shell 1. The support plate 17 is slidably connected to the outer surface of the support column 16. The upper surface of the support plate 17 is in contact with the lower surface of the sampling bottle 18. The upper end of the sampling bottle 18 is engaged with the outer surface of the connecting tube 7. A ring-shaped electromagnet 19 is fixedly installed on the outer surface of the support column 16. A magnetic block 20 is provided above the electromagnet 19. The magnetic block 20 is ring-shaped and is slidably sleeved on the outer surface of the support column 16. The magnetic block 20 is fixedly connected to the lower surface of the support plate 17. The magnetic poles of the electromagnet 19 and the magnetic block 20 repel each other.

[0037] like Figure 1 , Figure 2 and Figure 3 As shown, after rinsing, the upper end of the sampling bottle 18 is engaged with the outer surface of the connecting tube 7. At this time, the lower surface of the sampling bottle 18 is located on the upper surface of the support plate 17. The power of the electromagnet 19 is turned on, so that the electromagnet 19 and the magnetic block 20 repel each other. The repulsive force between the electromagnet 19 and the magnetic block 20 is used to push the support plate 17 upward on the outer surface of the support column 16 to lock the sampling bottle 18 and the connecting tube 7, so as to prevent the sampling bottle 18 from falling off. The motor 10 is started again to drive the inner cylinder 9 to rotate, so that the oil inlet pipe 3, the sampling pipe 4 and the extraction pipe 6 are connected. The oil pump 11 is started, and the insulating oil flows into the sampling bottle 18 through the extraction pipe 6 and the connecting tube 7 to complete the sampling operation. After the sampling is completed, the power of the electromagnet 19 is turned off, and the sampling bottle 18 is separated downward from the connecting tube 7, thus completing the sampling.

[0038] Working principle: When using this transformer insulating oil sampling device, the device is connected to the transformer's drain valve using the connecting hose 8. The motor 10 drives the inner cylinder 9 to rotate, thereby rotating the three-way flow channel inside the inner cylinder 9 and switching the flow of the pipes inside the device. When the oil inlet pipe 3, oil outlet pipe 5, and sampling pipe 6 are connected, the oil pump 11 is started to rinse the pipes inside the device, improving sampling accuracy. After rinsing, the inner cylinder 9 is rotated to connect the oil inlet pipe 3, sampling pipe 4, and sampling pipe 6, and the upper end of the sampling bottle 18 is engaged with the outer surface of the connecting pipe 7. The oil pump 11 is started, and the insulating oil flows into the sampling bottle 18 through the sampling pipe 6 and connecting pipe 7, completing the sampling and increasing the overall practicality.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transformer insulating oil sampling device, comprising a housing (1), wherein the housing (1) is a hollow cuboid structure, and an outer cylinder (2) is fixedly connected to the inner wall of the housing (1) by a connecting rod, wherein the outer cylinder (2) is a hollow cylindrical structure, and an oil inlet pipe (3), a sampling pipe (4), an oil outlet pipe (5), and a sampling tube (6) are respectively provided through the outer surface of the outer cylinder (2), characterized in that: The inlet pipe (3), sampling pipe (4), drain pipe (5) and sampling tube (6) form a cross-shaped structure on the outer surface of the outer cylinder (2). The cross-shaped structure is inclined on the outer surface of the outer cylinder (2). The height of the inlet pipe (3) in the cross-shaped structure is higher than that of the drain pipe (5) on the other side. The inlet pipe (3) penetrates through one side surface of the housing (1). The drain pipe (5) penetrates through the other side surface of the housing (1). The sampling tube (6) penetrates through the upper surface of the housing (1). The sampling pipe (4) penetrates through the upper surface of the connecting pipe (7). The connecting pipe (7) is arranged through the lower surface of the housing (1). The other end of the inlet pipe (3) is connected with a connecting hose (8). The other end of the sampling tube (6) is connected with an oil pump (11). The oil pump (11) is fixedly installed on the upper surface of the housing (1).

2. A transformer insulation oil sampling device according to claim 1, characterized in that: A flow path adjusting structure is arranged inside the outer cylinder (2). The flow path adjusting structure realizes the flow path adjustment between pipes through the inner cylinder (9), so as to rinse the pipes before insulating oil sampling and increase the sampling accuracy.

3. A transformer insulation oil sampling device according to claim 2, characterized in that: The flow path adjusting structure includes an inner cylinder (9). A cross-shaped three-way flow path is arranged inside the inner cylinder (9). The inner cylinder (9) is rotatably installed on the inner surface of the outer cylinder (2). The outer surface of the inner cylinder (9) is fixedly connected with the output end of the motor (10). The output end of the motor (10) penetrates through the surface of the outer cylinder (2). The motor (10) is embedded and fixed on the surface of the housing (1).

4. The transformer insulation oil sampling device of claim 1, wherein: A blocking structure is arranged inside the sampling tube (6). The blocking structure realizes the blocking of insulating oil through the movable slide plate (15) to prevent the insulating oil from flowing out of the outlet of the oil pump (11).

5. A transformer insulation oil sampling device according to claim 4, characterised in that: The blocking structure includes a connecting block (12). The connecting block (12) is a hollow frustum structure with an open lower surface. The connecting block (12) is fixedly installed on the inner wall of the sampling tube (6). A square opening is arranged on the upper surface of the connecting block (12). The slide plate (15) slides through the inner wall of the opening on the upper surface of the connecting block (12). Two slide plates (15) are symmetrically arranged. The two slide plates (15) completely block the opening on the upper surface of the connecting block (12). A push block (13) is arranged on one side of the slide plate (15). The push block (13) is a trapezoidal structure. The hypotenuse of the push block (13) contacts the surface of the slide plate (15). A round rod on the lower surface of the push block (13) slides through the surface of the connecting block (12). The other end of the round rod on the surface of the push block (13) is fixedly installed on the upper surface of the push plate (14). The push plate (14) is an annular structure. The push plate (14) is slidably connected to the inner wall of the sampling tube (6).

6. The transformer insulation oil sampling device of claim 1, wherein: A material receiving structure is arranged on the lower surface of the housing (1). The material receiving structure realizes the support of the sampling bottle (18) through the sliding support plate (17), which is convenient for the storage of insulating oil during the sampling process.

7. A transformer insulating oil sampling device according to claim 6, characterized in that: The receiving structure includes a support column (16), which is fixedly installed on the lower surface of the outer shell (1). A support plate (17) is slidably connected to the outer surface of the support column (16). The upper surface of the support plate (17) is in contact with the lower surface of the sampling bottle (18). The upper end of the sampling bottle (18) is engaged with the outer surface of the connecting tube (7). An annular electromagnet (19) is fixedly installed on the outer surface of the support column (16). A magnetic block (20) is provided above the electromagnet (19). The magnetic block (20) is annular and is slidably sleeved on the outer surface of the support column (16). The magnetic block (20) is fixedly connected to the lower surface of the support plate (17). The magnetic poles of the electromagnet (19) and the magnetic block (20) repel each other.

Images