Automatic oil taking system of transformer

Abstract

The utility model provides an automatic oil taking system of a transformer, relates to the field of transformer oil taking, and adopts the technical scheme that the automatic oil taking system comprises an oil taking device and an oil temporary storage module, the oil taking device is arranged on a mobile vehicle and comprises a quick connector, the oil temporary storage module comprises a butt joint oil pipe, the butt joint oil pipe is communicated with the transformer, and the oil temporary storage module comprises a shell; a vertical driving assembly is arranged on the shell and drives a mounting plate, the vertical driving assembly can drive the mounting plate to move up and down, a horizontal driving assembly is arranged on the mounting plate, the horizontal driving assembly is connected with an adjusting plate, and the horizontal driving assembly can drive the adjusting plate to move left and right. The adjusting plate is provided with an emitter of a correlation type photoelectric sensor. The oil taking device comprises a box body, a connector base and a quick connector are arranged on the box body, and a receiver of the correlation type photoelectric sensor is arranged on the connector base. Accurate butt joint can be avoided through image information, interference and collision are avoided, and the service life of equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of transformer oil extraction, and in particular to an automatic transformer oil extraction system. Background Technology

[0002] During transformer operation and maintenance, oil samples are periodically taken for oil saturation tests to understand the quality and performance of the insulating oil during operation. To avoid affecting the normal operation of the system, maintenance personnel perform live-line sampling when taking oil samples from transformers. Manual oil sampling exposes the oil sample completely to the air, leading to sample contamination, unsatisfactory test results, and safety risks.

[0003] In the prior art, Chinese invention patent with authorization announcement number CN112229683B discloses a transformer oil sample collection robot. Through a navigation device on the walking mechanism, the walking mechanism is guided to walk along a preset path to the oil sample location of the transformer, realizing coarse positioning between the walking mechanism and the oil sampling location. Furthermore, through a guide mechanism on the walking mechanism, the oil sampling device is precisely aligned with the oil sampling location of the transformer. The precise oil sampling by the oil sampling device replaces manual oil sampling, reducing the safety risks of oil sampling and improving the operational safety of maintenance personnel.

[0004] In the above technical solutions, both the guide cone and the image acquisition device can be mounted above the oil extraction device via a support rod. The guide cone cylinder can be mounted on the baffle, and the guide cone cylinder can cooperate with the guide cone so that when the guide cone moves to the guide cone cylinder, it begins to guide the movement of the guide cone, thereby guiding the traveling mechanism so that the syringe is aligned with the oil extraction hole on the baffle and inserted into the oil extraction tube to extract oil. However, to achieve accurate docking between the syringe and the oil extraction device using this technical solution, it is still necessary to adjust the position of the guide cone based on the image information returned by the image acquisition module. This results in visual errors, making it difficult to guarantee accurate docking between the guide cone and the guide cylinder, and the possibility of docking collisions, which affects the service life of the equipment. Utility Model Content

[0005] To address the technical problem of inaccurate alignment between the oil sampling device and the oil sampling location in the prior art, this utility model provides an automatic oil sampling system for transformers that can achieve accurate alignment without relying on image information, avoid interference and collisions, and extend the service life of the equipment.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an automatic oil extraction system for transformers, including an oil extraction device and an oil storage module. The oil extraction device is mounted on a mobile vehicle and includes a quick connector. The oil storage module includes a connecting oil pipe that is connected to the transformer. The oil storage module includes a housing and a vertical drive assembly on the housing. The vertical drive assembly drives a mounting plate and can move the mounting plate up and down. A horizontal drive assembly is mounted on the mounting plate and connected to an adjustment plate. The horizontal drive assembly can move the adjustment plate left and right. A transmitter of a through-beam photoelectric sensor is mounted on the adjustment plate. The oil extraction device includes a housing and a connector seat on the housing. A receiver of the through-beam photoelectric sensor and the quick connector are mounted on the connector seat.

[0007] This invention uses a through-beam photoelectric sensor transmitter and receiver to accurately determine the relative position of the quick connector and the mating oil pipe, ensuring accurate and smooth docking. It eliminates the need for image acquisition and manual judgment, avoids errors caused by visual judgment, and improves the automation level and efficiency of quick connector and mating oil pipe docking.

[0008] Furthermore, guide cylinders are provided at both ends of the adjustment plate. The guide cylinders include a positioning part and a horn part. The positioning part is provided with a positioning hole. A guide rod is provided on the connector seat. The guide rod can extend into the positioning hole. The vertical drive assembly is connected to the inner wall of the housing through a vertical floating assembly. The horizontal drive assembly is connected to the mounting plate through a horizontal floating assembly.

[0009] This invention, by setting a guide cylinder, a vertical floating component, and a horizontal floating component, enables the adjusting plate to adapt to the position of the guide rod when the oil taking device moves forward for docking, ensuring that the quick connector and the docking oil pipe are not misaligned, compensating for the positional displacement of the quick connector caused by road bumps or errors in the moving vehicle, and further ensuring smooth docking.

[0010] Furthermore, the vertical drive assembly includes a vertical drive motor and a vertical lead screw. The vertical lead screw is connected to the mounting plate, which is mounted inside the housing via a slide rail. The vertical floating assembly includes a vertical support shaft, which is vertically mounted inside the housing. The vertical drive motor is movably mounted on the vertical support shaft. Vertical springs are respectively sleeved on the vertical support shaft at both ends of the vertical drive motor. One end of the vertical spring abuts against the housing, and the other end of the vertical spring abuts against the vertical drive motor.

[0011] This invention, through the cooperation of a vertical support shaft and a vertical spring, enables the entire mounting plate to move vertically after being guided by a guide rod, allowing the quick connector to self-adapt vertically.

[0012] Furthermore, the horizontal drive assembly includes a horizontal drive motor and a horizontal lead screw. The horizontal lead screw is connected to the adjustment plate, and the adjustment plate is mounted on the mounting plate via a slide rail. The horizontal floating assembly includes a horizontal support shaft, with both ends of the horizontal support shaft mounted on the flanges of the mounting plate. The horizontal drive motor is movably mounted on the horizontal support shaft. Horizontal springs are respectively sleeved on the horizontal support shaft at both ends of the horizontal drive motor. One end of the horizontal spring abuts against the flange of the mounting plate, and the other end of the spring abuts against the horizontal drive motor.

[0013] This invention, through the cooperation of a horizontal support shaft and a horizontal spring, enables the entire adjusting plate to move vertically under the action of a guide rod, allowing the quick connector to self-adapt in the horizontal direction.

[0014] Furthermore, two guide cylinders are provided, which are arranged along the diagonal of the mounting plate, and the connector seat is correspondingly provided with two guide rods.

[0015] This invention further improves docking accuracy by setting two guide cylinders and guide rods along the diagonal.

[0016] Furthermore, a camera is provided on the housing and located above the connector seat. The mobile vehicle includes a magnetic stripe recognition module and a driving module. The magnetic stripe recognition module can recognize magnetic stripes at a set distance from the oil temporary storage module. The camera, the magnetic stripe recognition module, and the driving module are all electrically connected to the controller. The controller is located inside the housing and also includes a remote control module, which is electrically connected to the controller.

[0017] Furthermore, it also includes an injection module, which is disposed inside the housing. The injection module includes a push-pull mechanism and a syringe. The syringe is connected to the quick connector. The push-pull mechanism includes an electric push rod, which is electrically connected to the controller. The telescopic rod of the electric push rod is provided with a connecting plate, which is connected to the piston of the syringe.

[0018] Furthermore, it also includes an oil extraction hydraulic module, which includes an oil extraction pump installed in the oil storage module. The oil extraction pump is communicatively connected to the controller and can communicate with the transformer's oil extraction port. The oil extraction pump can rotate in both directions, and its outlet end is connected to the docking oil pipe via an oil pipe. The oil extraction device also includes a waste oil tank installed inside the tank. The waste oil tank is connected to the syringe via an oil pipe, and a one-way valve is installed on the oil pipe, which opens towards the waste oil tank.

[0019] Furthermore, it also includes an oil extraction hydraulic module, which includes an oil extraction pump housed within the housing. The oil extraction pump is electrically connected to the controller, and its inlet is connected to the quick connector. The outlet of the oil extraction pump is connected to the syringe via an oil pipe. The oil extraction device also includes a waste oil tank housed within the housing. The waste oil tank is connected to the syringe via an oil pipe, and a one-way valve is installed on the oil pipe, which opens towards the waste oil tank.

[0020] This invention reduces the manufacturing cost of the oil storage module by incorporating the oil extraction hydraulic module into the oil extraction device, and enables multiple transformers to be equipped with the oil storage module.

[0021] Furthermore, the injection module includes two syringes, each connected to the push-pull mechanism, and each syringe is connected to the quick connector.

[0022] This invention, by using two syringes, can collect two tubes of oil at once, meeting the needs of testing and sample retention.

[0023] As can be seen from the above technical solutions, this utility model has the following advantages:

[0024] This invention provides an automatic oil sampling system for transformers. Using a through-beam photoelectric sensor transmitter and receiver, the system accurately determines the relative position of the quick-connect coupling and the connecting oil pipe, ensuring accurate and smooth docking without the need for image acquisition or manual judgment. This avoids errors caused by visual judgment and improves the automation level and efficiency of the quick-connect coupling and connecting oil pipe docking. By incorporating a guide cylinder, a vertical floating component, and a horizontal floating component, the system allows the adjusting plate to adaptively adjust according to the position of the guide rod when the oil sampling device moves forward for docking, ensuring that the quick-connect coupling and the connecting oil pipe are not misaligned. This compensates for positional shifts in the quick-connect coupling caused by road bumps or errors in the moving vehicle, further guaranteeing smooth docking. A vertical support shaft... In conjunction with the vertical spring, the entire mounting plate can move vertically under the action of the guide rod, allowing the quick connector to self-adapt vertically. Similarly, the horizontal support shaft and horizontal spring enable the entire adjustment plate to move vertically under the action of the guide rod, allowing the quick connector to self-adapt horizontally. The placement of two guide cylinders and guide rods diagonally further improves docking accuracy. Integrating the oil extraction hydraulic module into the oil extraction device reduces the manufacturing cost of the oil storage module, allowing for the installation of oil storage modules on multiple transformers. The inclusion of two syringes allows for the extraction of two tubes of oil at once, meeting the needs of inspection and sample retention. Attached Figure Description

[0025] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0027] Figure 2 This is a schematic diagram of the oil temporary storage module in a specific embodiment of the present invention. Figure 1 .

[0028] Figure 3 This is a schematic diagram of the oil temporary storage module in a specific embodiment of the present invention. Figure 2 .

[0029] Figure 4 This is a schematic diagram of the assembly structure of the oil extraction device and the mobile vehicle in a specific embodiment of this utility model.

[0030] Figure 5 This is a hydraulic schematic diagram of a specific embodiment of the present invention.

[0031] Figure 6 This is a structural schematic diagram of a second specific embodiment of the present utility model.

[0032] Figure 7 This is a schematic diagram of the assembly structure of the oil extraction device and the mobile vehicle in the second specific embodiment of this utility model.

[0033] Figure 8 This is a hydraulic schematic diagram of the second specific embodiment of this utility model.

[0034] In the diagram, 1. Box body; 2. Push-pull mechanism; 3. Injector; 4. Moving cart; 5. Camera; 6. Connector seat; 7. Guide rod; 8. Quick connector; 9. Oil storage module; 10. Oil extraction hydraulic module; 11. Vertical spring; 12. Mounting plate; 13. Horizontal support shaft; 14. Guide cylinder; 15. Connecting oil pipe; 16. Transmitter; 17. Oil extraction pump; 18. Waste oil tank; 19. Check valve; 20. Oil pipe two; 21. Oil pipe one. Detailed Implementation

[0035] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent. Specific Implementation Method 1

[0037] like Figure 1 and Figure 2 As shown in the figure, this specific embodiment provides an automatic oil sampling system for transformers, including an oil sampling device and an oil storage module 9. The oil sampling device is mounted on a mobile vehicle 4 and includes a quick connector 8. The oil storage module 9 includes a connecting oil pipe 15, which is connected to the transformer. The oil storage module 9 includes a housing, on which a vertical drive assembly is mounted. The vertical drive assembly drives a mounting plate 12, enabling the mounting plate 12 to move up and down. A horizontal drive assembly is mounted on the mounting plate 12, connected to an adjustment plate. The horizontal drive assembly can... The device can move the adjustment plate left and right. The adjustment plate is equipped with a transmitter 16 of a through-beam photoelectric sensor. The oil extraction device includes a housing 1, on which a connector seat 6 is provided. The connector seat 6 is equipped with a receiver of the through-beam photoelectric sensor and a quick connector 8. After this configuration, the adjustment plate moves up and down and left and right within a set range until the signal emitted by the transmitter 16 is received by the receiver, and the quick connector 8 is precisely aligned with the oil pipe. The adjustment dimensions of the adjustment plate in the vertical and horizontal directions can be adjusted according to road conditions. The through-beam photoelectric sensor is a laser through-beam sensor.

[0038] This specific embodiment can accurately determine the relative position of the quick connector 8 and the docking oil pipe 15 by using the transmitter 16 and receiver of the through-beam photoelectric sensor, thus achieving precise positioning and ensuring accurate and smooth docking. Compared with the method of collecting images by camera 5 and cooperating with manual remote control or automatic judgment by controller, there is no need to perform image acquisition and image information judgment, avoiding errors caused by visual judgment. The required system computing power is lower, and the automation level and efficiency of docking quick connector 8 and docking oil pipe 15 are improved.

[0039] like Figure 2 As shown, to ensure smooth docking and prevent misalignment between the quick connector 8 and the docking oil pipe 15 during the docking process, guide cylinders 14 are also provided at both ends of the adjusting plate in this specific embodiment. Each guide cylinder 14 includes a connected positioning part and a flared part. The positioning part is connected to the adjusting plate and has a positioning hole. A guide rod 7 is horizontally arranged on the connector seat 6, and the guide rod 7 can extend into the positioning hole. The vertical drive assembly is connected to the inner wall of the housing via a vertical floating assembly, and the horizontal drive assembly is connected to the mounting plate 12 via a horizontal floating assembly. With this arrangement, when the guide cylinder 14 is subjected to the force of the guide rod 7... After force is applied, the guide cylinder 14 can self-adapt, ensuring the relative positional relationship between the guide cylinder 14 and the guide rod 7. This ensures that the relative positional relationship between the quick connector 8 and the docking oil pipe 15 does not change when the moving vehicle 4 moves forward, further ensuring smooth docking and improving the system's adaptability to various road conditions, which is conducive to expanding the system's application range. In this specific embodiment, the diameter of the horn is determined according to the degree of bumpiness of all road conditions in this system. The more bumpy the road, the larger the diameter of the horn, to avoid excessively large adjustment units and small horn diameters, which would cause interference between the guide rod 7 and the horn during the adjustment process.

[0040] like Figure 2As shown, specifically, the vertical drive assembly includes a vertical drive motor and a vertical lead screw. The vertical lead screw is connected to a mounting plate 12, which is mounted inside the housing via a vertically arranged slide rail. The vertical floating assembly includes a vertical support shaft, which is vertically mounted inside the housing. The vertical drive motor is movably mounted on the vertical support shaft via a slide block. Vertical springs 11 are respectively sleeved on the vertical support shaft at both ends of the vertical drive motor. One end of the vertical spring 11 abuts against the housing, and the other end of the vertical spring 11 abuts against the vertical drive motor. The horizontal drive assembly includes a horizontal drive motor and a horizontal lead screw. The horizontal lead screw is connected to an adjustment plate, which is mounted on the mounting plate 12 via a horizontally arranged slide rail. The horizontal floating assembly includes a horizontal support shaft 13, water... The two ends of the flat support shaft 13 are set on the flange of the mounting plate 12. The horizontal drive motor is movably set on the horizontal support shaft 13 through the slide. Horizontal springs are respectively sleeved on the horizontal support shaft 13 and at both ends of the horizontal drive motor. One end of the horizontal spring abuts against the flange of the mounting plate 12, and the other end of the spring abuts against the horizontal drive motor. With this setting, when the guide cylinder 14 is subjected to the force of the guide rod 7, it can move in any direction in the two-dimensional plane under the combined action of the vertical floating component and the horizontal floating component. This ensures that the relative position of the guide cylinder 14 and the guide rod 7 is always kept in the position after the transmitter 16 and the receiver are aligned. This ensures that the relative position of the quick connector 8 and the docking oil pipe 15 does not change, effectively avoids interference, and ensures smooth docking.

[0041] like Figure 2 As shown, to further ensure docking accuracy, two guide cylinders 14 are provided, which are arranged along the diagonal of the rectangular mounting plate 12, and the connector seat 6 is correspondingly provided with two guide rods 7.

[0042] like Figure 1 As shown, further, in this specific embodiment, a camera 5 is installed on the housing 1 and located above the connector 6. The mobile vehicle 4 includes a magnetic stripe recognition module and a driving module. The mobile vehicle 4 is a tracked mobile vehicle 4. The driving module includes a motor reducer, transmission components, braking components, steering components, and track components. The magnetic stripe recognition module can identify magnetic stripes at a set distance from the oil storage module 9. The camera 5, magnetic stripe recognition module, and driving module are all electrically connected to the controller. The controller is located inside the housing 1 and also includes a remote control module, which is electrically connected to the controller. With this setup, the operator can remotely control the mobile vehicle 4 and, in conjunction with the camera 5, manipulate the mobile vehicle 4 to avoid obstacles and move it into the magnetic induction zone around the oil storage module 9. This greatly reduces the computational power required by the controller. When the magnetic stripe recognition module identifies the magnetic stripe, the mobile vehicle 4 stops moving, completing coarse positioning. Then, the controller adjusts the adjustment plate within the set adjustment range in the up-down and left-right directions until the signal emitted by the transmitter 16 is received by the receiver.

[0043] like Figure 1 , Figures 3 to 5 As shown, furthermore, this system also includes an oil sampling hydraulic module 10 and an injection module. The oil sampling hydraulic module 10 is located on the back of the housing of the oil storage module 9. The oil sampling hydraulic module 10 is connected to the controller via wireless communication. The injection module includes a push-pull mechanism 2 and a syringe 3. The syringe 3 is installed in the housing 1 by a snap-fit ​​mechanism for easy disassembly and assembly. The syringe 3 is connected to a quick connector 8 via a connector on the housing. The push-pull mechanism 2 uses an electric push rod, which is electrically connected to the controller. The telescopic rod of the electric push rod is provided with a connecting plate, which is connected to the piston of the syringe 3. In this specific embodiment, in order to mix the sedimented and stratified oil in the transformer tank before sampling to improve the representativeness of the oil sample, the oil sampling hydraulic module 10 includes an oil sampling pump. The oil sampling pump is located in the oil pump box on the back of the housing of the oil storage module 9. The oil sampling pump 17 is connected to the controller via wireless communication. The oil inlet 17 can be connected to the transformer oil outlet. The oil outlet of the oil pump 17 is connected to the connecting oil pipe 15 through the first oil pipe 21. The oil pump 17 is connected to a motor, which can drive the oil pump 17 to rotate in both directions. The oil extraction device also includes a waste oil tank 18, which is located inside the housing 1. The waste oil tank 18 is connected to the syringe 3 through the second oil pipe 20. A one-way valve 19 is installed on the second oil pipe 20, which is open towards the waste oil tank 18. When oil extraction is required, firstly, the oil extraction hydraulic module 10 pumps oil at a certain pressure from the transformer and enters the quick connector 8 through the connecting oil pipe 15. At the same time, the syringe 3 increases its volume under the action of the push-pull mechanism 2, and the oil enters the syringe 3 for storage. Then, the oil pump 17 reverses, the push-pull mechanism 2 moves in the opposite direction, and the oil is pumped back to the transformer oil tank. The returned oil has a certain pressure, which can generate turbulence in the transformer oil tank, mixing the sedimented and stratified oil. After repeating the operation three times, the oil is extracted again.

[0044] Preferably, to ensure that two tubes of oil are extracted at once and to improve oil extraction efficiency, in this specific embodiment, the injection module includes two syringes 3, each connected to a push-pull mechanism 2, and each syringe 3 is connected to the quick connector 8. The syringes 3 are connected to oil pipe 20 through oil pipe 3. When extracting oil, the oil pump rotates forward, and at the same time, the two push-pull mechanisms 2 extend a set distance to draw the oil into the two syringes 3. When the oil is circulated, only one syringe 3 participates in the circulation of the oil, and the one-way valve 19 is located between the two syringes 3.

[0045] The working process of this system is as follows:

[0046] Two syringes 3 are installed inside the housing 1. With the assistance of the image transmitted back by the camera 5, the remote-controlled mobile vehicle 4 moves to the vicinity of the oil storage module 9 of the corresponding transformer until it enters the magnetic induction coil to achieve coarse positioning. The mobile vehicle 4 then stops moving. The adjustment plate moves horizontally and vertically within the set range until the receiver receives the light signal emitted by the transmitter 16 to achieve accurate positioning. At the same time as accurate positioning, the controller receives the signal emitted by the laser beam sensor, and the mobile vehicle 4 moves forward, causing the quick connector 8 to be inserted into the docking oil pipe 15. Due to the bumps on the road and the movement deviation of the tracks, the guide rod 7 is offset from its original position. The mobile vehicle 4 continues to move forward, and the guide rod 7 drives the guide cylinder 14, which in turn drives the adjustment plate to move, ensuring that the relative position of the quick connector 8 and the docking oil pipe 15 does not change, thereby achieving accurate docking. After docking, the oil extraction hydraulic module 10 receives the instruction from the controller and starts pumping oil. The oil enters the syringe 3 from the oil pump to complete the oil extraction. The operator uses the remote control to control the mobile vehicle 4 to return to the initial position. Specific Implementation Method Two

[0048] like Figures 6 to 8 As shown, this specific embodiment provides an automatic oil extraction system for transformers, which is basically the same in structure as the first specific embodiment, except that: the oil extraction pump 17 is installed inside the housing 1, the oil extraction pump 17 is electrically connected to the controller, the oil inlet of the oil extraction pump 17 is connected to the quick connector 8, and the oil outlet of the oil extraction pump 17 is connected to the syringe 3 through the oil pipe 21; by installing the oil extraction hydraulic module 10 in the oil extraction device, multiple transformers can share one oil extraction hydraulic module 10. Compared with the first specific embodiment, this can reduce the manufacturing cost of the oil temporary storage module 9 and facilitate the installation of the oil temporary storage module 9 on multiple transformers.

[0049] As can be seen from the above specific embodiments, this utility model has the following beneficial effects:

[0050] 1. The transmitter 16 and receiver of the through-beam photoelectric sensor can accurately determine the relative position of the quick connector 8 and the docking oil pipe 15, ensuring accurate and smooth docking without the need for image acquisition and manual judgment, avoiding errors caused by visual judgment, and improving the automation level and efficiency of docking between the quick connector 8 and the docking oil pipe 15.

[0051] 2. By setting the guide cylinder 14, the vertical floating component and the horizontal floating component, when the oil taking device moves forward to dock, the adjusting plate can adapt to the position of the guide rod 7, ensuring that the quick connector 8 and the docking oil pipe 15 are not misaligned, compensating for the positional offset of the quick connector 8 caused by road bumps or the error of the moving vehicle 4, and further ensuring smooth docking.

[0052] 3. By setting two guide cylinders 14 and guide rods 7 along the diagonal, the docking accuracy can be further improved;

[0053] 4. By setting the oil extraction hydraulic module 10 in the oil extraction device, the manufacturing cost of the oil temporary storage module 9 can be reduced, and multiple transformers can be equipped with the oil temporary storage module 9.

[0054] 5. By setting two syringes 3, two tubes of oil can be taken at once, which meets the needs of testing and sample retention.

[0055] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic oil extraction system for a transformer, comprising an oil extraction device and an oil storage module (9), wherein the oil extraction device is mounted on a mobile vehicle (4), the oil extraction device includes a quick connector (8), and the oil storage module (9) includes a connecting oil pipe (15) connected to a transformer, characterized in that, The oil storage module (9) includes a housing, on which a vertical drive assembly is provided. The vertical drive assembly drives a mounting plate (12). The vertical drive assembly can move the mounting plate (12) up and down. A horizontal drive assembly is provided on the mounting plate (12). The horizontal drive assembly is connected to an adjustment plate. The horizontal drive assembly can move the adjustment plate left and right. A transmitter (16) of a through-beam photoelectric sensor is provided on the adjustment plate. The oil extraction device includes a housing (1), a connector seat (6) is provided on the housing (1), and a receiver for a through-beam photoelectric sensor and a quick connector (8) are provided on the connector seat (6).

2. The transformer automatic oil extraction system as described in claim 1, characterized in that, The adjustment plate is also provided with guide cylinders (14) at both ends. The guide cylinders (14) include a positioning part and a horn part. The positioning part is provided with a positioning hole. The connector seat (6) is provided with a guide rod (7). The guide rod (7) can extend into the positioning hole. The vertical drive assembly is connected to the inner wall of the housing through a vertical floating assembly. The horizontal drive assembly is connected to the mounting plate (12) through a horizontal floating assembly.

3. The transformer automatic oil sampling system as described in claim 2, characterized in that, The vertical drive assembly includes a vertical drive motor and a vertical lead screw. The vertical lead screw is connected to the mounting plate (12). The mounting plate (12) is set in the housing via a slide rail. The vertical floating assembly includes a vertical support shaft. The vertical support shaft is installed in the housing. The vertical drive motor is movably mounted on the vertical support shaft. Vertical springs (11) are respectively sleeved on the vertical support shaft and at both ends of the vertical drive motor. One end of the vertical spring (11) abuts against the housing, and the other end of the vertical spring (11) abuts against the vertical drive motor.

4. The transformer automatic oil sampling system as described in claim 3, characterized in that, The horizontal drive assembly includes a horizontal drive motor and a horizontal lead screw. The horizontal lead screw is connected to the adjustment plate. The adjustment plate is mounted on the mounting plate (12) via a slide rail. The horizontal floating assembly includes a horizontal support shaft (13). Both ends of the horizontal support shaft (13) are mounted on the flange of the mounting plate (12). The horizontal drive motor is movably mounted on the horizontal support shaft (13). Horizontal springs are respectively sleeved on the horizontal support shaft (13) and located at both ends of the horizontal drive motor. One end of the horizontal spring abuts against the flange of the mounting plate (12), and the other end of the spring abuts against the horizontal drive motor.

5. The transformer automatic oil extraction system as described in claim 2, characterized in that, Two guide cylinders (14) are provided, and the two guide cylinders (14) are arranged along the diagonal of the mounting plate (12). The connector seat (6) is correspondingly provided with two guide rods (7).

6. The automatic oil extraction system for transformers as described in claim 1, characterized in that, A camera (5) is provided on the housing (1) and above the connector (6). The mobile vehicle (4) includes a magnetic stripe recognition module and a driving module. The magnetic stripe recognition module can recognize the magnetic stripe at a set distance from the oil storage module (9). The camera (5), the magnetic stripe recognition module and the driving module are all electrically connected to the controller. The controller is located inside the housing (1) and also includes a remote control module. The remote control module is electrically connected to the controller.

7. The transformer automatic oil extraction system as described in claim 6, characterized in that, It also includes an injection module, which is located inside the housing (1). The injection module includes a push-pull mechanism (2) and a syringe (3). The syringe (3) is connected to the quick connector (8). The push-pull mechanism (2) includes an electric push rod, which is electrically connected to the controller. The telescopic rod of the electric push rod is provided with a connecting plate, which is connected to the piston of the syringe (3).

8. The automatic oil extraction system for transformers as described in claim 7, characterized in that, It also includes an oil extraction hydraulic module (10), which includes an oil extraction pump (17). The oil extraction pump (17) is installed in the oil storage module (9). The oil extraction pump (17) is connected to the controller. The oil inlet of the oil extraction pump (17) can be connected to the transformer oil extraction port. The oil outlet of the oil extraction pump (17) is connected to the docking oil pipe (15) through oil pipe one (21). The oil extraction pump (17) can rotate in both directions. The oil extraction device also includes a waste oil tank (18), which is installed in the box body (1). The waste oil tank (18) is connected to the syringe (3) through oil pipe two (20). A one-way valve (19) is installed on oil pipe two (20). The one-way valve (19) is open towards the waste oil tank.

9. The transformer automatic oil sampling system as described in claim 7, characterized in that, It also includes an oil extraction hydraulic module (10), which includes an oil extraction pump (17). The oil extraction pump (17) is installed inside the housing (1). The oil extraction pump (17) is electrically connected to the controller. The oil inlet of the oil extraction pump (17) is connected to the quick connector (8). The oil outlet of the oil extraction pump (17) is connected to the syringe (3) through an oil pipe (21). The oil extraction device also includes a waste oil tank (18), which is installed inside the housing (1). The waste oil tank (18) is connected to the syringe (3) through an oil pipe (20). A one-way valve (19) is installed on the oil pipe (20). The one-way valve (19) is directed toward the waste oil tank (18).

10. The transformer automatic oil sampling system as described in claim 7, characterized in that, The injection module includes two syringes (3), each of which is connected to the push-pull mechanism (2), and each of which is connected to the quick connector (8).

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