Transformer box air tightness detection device and method

Abstract

The present invention discloses a transformer box air tightness detection device and method, specifically relating to the technical field of transformer detection. The transformer box air tightness detection device includes a detection water tank, a detection frame is set up in the detection water tank, and also includes: a transformer oil tank, which is set on the detection frame and waits for detection. The present invention is provided with a sealing mechanism, which can complete the deep sealing and blocking of the transformer oil tank during a single detection process, without the need to repeatedly disassemble and assemble the transformer oil tank top plate, thereby optimizing the detection process. The design of the cleaning mechanism is adopted to synchronously control the two horizontal scrapers and the longitudinal scraper to complete the compensatory cleaning of the connection between the sealing mechanism and the transformer oil tank in a dimensionally changing manner, thereby ensuring the sealing of the connection. At the same time, it can actively switch and control the internal support parts, fully compensate for the uneven area between the sealing mechanism and the transformer oil tank, provide a safe and stable sealing effect, and facilitate the discovery of welding weaknesses in the transformer oil tank.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer detection, and in particular to a device and method for detecting air tightness of a transformer box. Background Art

[0002] The oil tank of the oil-immersed transformer needs to be tested for air tightness after welding to avoid the risk of leakage at the welding point, to test the actual usage conditions and ensure the quality of the transformer leaving the factory. The following methods are mostly used to test the transformer tank:

[0003] Direct pressure type: It determines the sealing performance by filling gas and monitoring the pressure change. It has a simple structure and is suitable for containers of various shapes and sizes.

[0004] Differential pressure type: compares the gas pressure difference between the measured container and the reference container, with high accuracy and stability;

[0005] Negative pressure type: Monitor pressure changes after creating a negative pressure environment;

[0006] Since the oil tank of an oil-immersed transformer is relatively large, direct pressure testing combined with testing liquid is often used for air tightness testing in actual testing. This method can meet the testing requirements of different transformer tanks, has high adaptability, and reduces the overall difficulty of testing.

[0007] Reference is made to a transformer box air tightness detection device disclosed in the patent with publication number CN110672284B. The detection device determines whether there is an air gap in the oil tank based on the numerical changes of the first pressure sensor and the second pressure sensor, so that the oil tank air tightness detection does not need to rely on manual experience, and the detection speed is fast, which is convenient for assembly line production.

[0008] The above detection device can effectively determine the air tightness through the values ​​of the first pressure sensor and the second pressure sensor. However, during a single detection process, the above detection device needs to assemble and seal the top plate of the transformer tank before performing the detection work.

[0009] However, a plurality of through holes for high-voltage outlet terminals and oil pillow pipelines are reserved on the top plate of the transformer oil tank. In a single sealing process, not only the top plate needs to be assembled separately, but also each through hole needs to be sealed. Firstly, the difficulty and workload of detection are increased, making the overall detection process more complicated, and impurities at the connection between the top plate and the oil tank can easily interfere with the sealing, which needs to be cleaned, making the overall operation time-consuming and labor-intensive. Secondly, the sealing of the through holes can easily interfere with the detection data, making it impossible to accurately know the airtightness of the welding point of the transformer oil tank, which can easily cause data errors, increase the workload of subsequent re-inspection, and cannot accurately discover the welding defects of the transformer oil tank, which is not conducive to the improvement of the welding process of the transformer oil tank production. Summary of the Invention

[0010] The purpose of the present invention is to provide a transformer box air tightness detection device and method to solve the above technical problems.

[0011] To solve the above technical problems, the present invention is implemented through the following technical solutions.

[0012] The present invention is a transformer box air tightness detection device, comprising a detection water tank, a detection frame set up in the detection water tank, and further comprising:

[0013] Transformer tank, set on the inspection frame waiting for inspection;

[0014] The lifting frame is slidably arranged on the detection frame to control the lifting and lowering of the transformer oil tank. A No. 1 cylinder for controlling the lifting amount is installed between the lifting frame and the detection frame;

[0015] The detection mechanism is installed on the detection water tank and is used for the detection of the transformer oil tank;

[0016] The sealing mechanism is installed on the lifting frame to dynamically seal the top of the transformer tank. Two No. 2 cylinders are symmetrically installed between the sealing mechanism and the lifting frame. An internal support is provided in the sealing mechanism to improve the sealing performance.

[0017] The cleaning mechanism is arranged between the sealing mechanism and the transformer oil tank for active cleaning of the two. The cleaning mechanism can complete the cleaning operation on the connection between the sealing mechanism and the transformer oil tank in a variable manner, and the cleaning mechanism can cooperate with the internal support to improve the sealing performance of the sealing mechanism.

[0018] Furthermore, the lifting frame includes:

[0019] The lifting arm is slidably arranged between the detection frames, and a detection platform for supporting the transformer oil tank is arranged at the bottom of the lifting arm through a bracket.

[0020] Furthermore, the sealing mechanism includes:

[0021] The sealing seat is set below the lifting frame, and the sealing seat is connected to the output ends of the two No. 2 cylinders to complete the lifting control. An assembly seat is installed below the sealing seat, and guide rods are installed at the four corners of the assembly seat;

[0022] The seal can be removably installed on the lower surface of the assembly seat to complete the sealing of the top of the transformer oil tank.

[0023] Furthermore, the inner support member includes:

[0024] An annular groove is hidden and formed on the lower surface of the assembly seat;

[0025] The annular bag is hidden in the annular groove to complete the internal support action of the seal;

[0026] Two inlet pipes are symmetrically connected and arranged on one side of the top of the annular bag;

[0027] The two outlet pipes are symmetrically connected and arranged on the top of the annular bag and are located on one side of the two inlet pipes.

[0028] Furthermore, the testing organization includes:

[0029] The detection unit is installed on one side of the test water tank to complete the air tightness test of the transformer oil tank;

[0030] The conveying joint is connected to the sealing mechanism to complete the conveying work;

[0031] Four collection units are correspondingly arranged around the inner wall of the detection water tank to complete the multi-directional collection work of the transformer oil tank.

[0032] Furthermore, the cleaning mechanism includes:

[0033] Two transverse scrapers are symmetrically arranged at the bottom of the sealing mechanism;

[0034] Two extension platforms are welded to one side of the two transverse scrapers. A sensing arm is fixedly installed on the upper surface of the extension platform, and a sensing wheel is rotatably installed at the front end of the sensing arm. The sensing arm is correspondingly slidably arranged on the sealing mechanism;

[0035] Two reset rods are respectively arranged on one side of the two sensing arms. A reset spring is sleeved on the outside of the reset rod for resetting. A moving area is opened on both sides of the two horizontal scrapers. A slide is slidably installed in each moving area.

[0036] Two longitudinal scrapers are symmetrically arranged at the bottom of the sealing mechanism. The two longitudinal scrapers and the two transverse scrapers are combined to form a rectangular cleaning space with variable size. Each longitudinal scraper is composed of two staggered cleaning plates. Sliding tracks are opened on both cleaning plates to enable the two cleaning plates to slide and engage with each other to complete the telescopic action.

[0037] The driving member is arranged on the sealing mechanism to control the two horizontal scrapers and the longitudinal scraper to complete the mobile cleaning work.

[0038] Furthermore, the cleaning mechanism also includes:

[0039] Multiple No. 1 moving cavities are correspondingly hidden and arranged in multiple moving areas;

[0040] Multiple No. 1 piston components are correspondingly sealed and slidably arranged in the No. 1 moving chamber, and the front end of each No. 1 piston component is connected to the sliding seat to complete the movement control of the longitudinal scraper.

[0041] Furthermore, the driving member includes:

[0042] The third cylinder is arranged on one side of the sealing mechanism, and a control arm is installed at the output end of the third cylinder;

[0043] Two power members are symmetrically slidably arranged on both sides of the top of the sealing mechanism. The side walls of each power member are formed with a starting section, an inclined section and an ending section. The inclined section is inclined to complete the movement control of the two horizontal scrapers and the longitudinal scraper;

[0044] The two No. 2 moving chambers are symmetrically arranged on both sides of the top of the sealing mechanism. A No. 2 piston is sealed and slidably installed in each No. 2 moving chamber, and the front end of the No. 2 piston is transmission-connected to the power part. The tail ends of the two No. 2 moving chambers are connected to the No. 1 moving chambers of the two transverse scrapers through pipes respectively, and the tail ends of the two No. 2 moving chambers are connected to the two inner support parts through pipes respectively to complete the control.

[0045] Furthermore, the driving member further comprises:

[0046] Two control members are correspondingly arranged on one side of the cleaning mechanism to complete the switching control of the internal support member. Each control member includes a control chamber, a sealing cover and a partition. The control chamber is arranged on one side of the cleaning mechanism. The sealing cover is detachably arranged on the top of the control chamber to complete the blockage. The partition is arranged in the middle position of the control chamber. The control chamber is divided into a first space and a second space by the partition. A first pipe connected to the first space is installed on one side of the control chamber. The first pipe is connected to the tail of the second movable chamber through a pipeline. A second pipe connected to the second space is installed on the sealing cover. The second pipe is connected to the sealing mechanism through a pipeline.

[0047] Two conical through holes are correspondingly opened through the two partitions, and conical plugs are sealed and installed in the two conical through holes to complete the sealing of the conical through holes through the conical plugs;

[0048] Two trigger rods are respectively sealed and slid through one side of the two control chambers to be connected to the conical plug. A retaining ring is sleeved on the outside of each trigger rod. A trigger spring is sleeved on the outside of each trigger rod. The front end of the trigger rod cooperates with the cleaning mechanism to complete the triggering. When the cleaning mechanism completes the cleaning, it contacts the trigger rod to complete the extrusion trigger, so that the conical plug is separated from the conical through hole to complete the opening.

[0049] The present invention also provides a method for detecting the air tightness of a transformer box, which specifically includes the following steps:

[0050] Step 1: Control the No. 1 cylinder to raise the lifting frame, and transfer the transformer oil tank to the lifting frame via the roller conveyor line;

[0051] Step 2: Use the No. 2 cylinder to control the sealing mechanism to move downward to complete the active sealing of the transformer oil tank. Use the No. 1 cylinder again to control the lifting frame and the transformer oil tank to move downward into the test water tank to wait for air tightness testing;

[0052] Step 3: Start the detection mechanism and cooperate with the detection water tank to complete the air tightness pressure test on the transformer tank;

[0053] Step 4: Use the cleaning mechanism to clean the connection between the sealing mechanism and the transformer tank, thereby ensuring the sealing of the connection between the two.

[0054] Compared with the prior art, the present invention has the following beneficial effects:

[0055] The present invention is provided with a sealing mechanism, which can complete the deep sealing of the transformer oil tank during a single detection process, so that the sealing member contacts the transformer oil tank with a predetermined pressure, thereby improving the sealing performance of the contact position between the two, avoiding interference with the detection accuracy, and facilitating the detection of the weld seam of the transformer oil tank. At the same time, there is no need to repeatedly disassemble and assemble the transformer oil tank top plate.

[0056] The present invention adds a cleaning mechanism to the sealing mechanism. The design of the cleaning mechanism can fully meet the cleaning work of the connection between the sealing mechanism and the transformer oil tank. Under the control of the driving member, the two transverse scrapers and the longitudinal scraper are synchronously controlled to complete the compensatory cleaning of the connection between the sealing mechanism and the transformer oil tank in a manner of size change, thereby ensuring the sealing of the connection between the two. After cleaning, the cleaning mechanism can actively avoid blocking the sealing mechanism.

[0057] The present invention can actively switch and control the internal support member under the cooperation of the driving member and the control member, so that the internal support member moves in the sealing mechanism to complete the reinforced seal, further enhancing the sealing performance of the sealing mechanism, and can fully compensate for the uneven area between the sealing mechanism and the transformer oil tank, providing a safe and stable sealing effect, thereby improving the accuracy of the overall airtightness detection, facilitating the discovery of welding weaknesses in the transformer oil tank, and facilitating the subsequent improvement and upgrading of the production process of the transformer oil tank.

[0058] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 This is the overall front view of the present invention;

[0060] Figure 2 This is a schematic diagram of the detection water tank of the present invention;

[0061] Figure 3 This is a schematic diagram of the distribution of the lifting frame and the transformer oil tank of the present invention;

[0062] Figure 4 This is a schematic diagram of the contact between the sealing mechanism of the present invention and the transformer oil tank;

[0063] Figure 5Schematic diagram of the sealing mechanism of the present invention;

[0064] Figure 6 It is a schematic diagram of the cleaning mechanism of the present invention;

[0065] Figure 7 This is a schematic diagram of the distribution of two transverse scrapers and a longitudinal scraper of the present invention;

[0066] Figure 8 This is a schematic diagram of the longitudinal scraper structure of the present invention;

[0067] Figure 9 This is a schematic diagram of the installation of the inner support member of the present invention in the sealing mechanism;

[0068] Figure 10 It is a schematic diagram of the inner support member of the present invention;

[0069] Figure 11 This is a schematic diagram of the distribution of the cleaning mechanism and the inner support members of the present invention;

[0070] Figure 12 This is a schematic diagram of the distribution of the driving member, two transverse scrapers, and a longitudinal scraper of the present invention;

[0071] Figure 13 is a schematic diagram of a driving member of the present invention;

[0072] Figure 14 This is a schematic diagram of the installation of the control member of the present invention on the transverse scraper;

[0073] Figure 15 It is a schematic diagram of the control component structure of the present invention.

[0074] In the figure: 1. Detection water tank; 2. Detection frame; 3. Transformer oil tank; 4. Cylinder No. 1; 5. Cylinder No. 2; 6. Lifting arm; 7. Detection table; 8. Sealing seat; 9. Assembly seat; 10. Sealing element; 11. Annular groove; 12. Annular bag; 13. Inlet pipe; 14. Outlet pipe; 15. Detection unit; 16. Delivery joint; 17. Collection unit; 18. Horizontal scraper; 19. Extension table; 20. Sensing arm; 21. Reset rod; 22. Reset spring; 23. Moving area; 24. Sliding seat; 25. Longitudinal scraper; 251. Cleaning plate; 252. Sliding track; 26. Moving chamber No. 1; 27. Piston No. 1; 28. Cylinder No. 3; 29. ​​Control arm; 30. Power part; 301. Starting section; 302. Inclining section; 303. End section; 31. Moving chamber No. 2; 32. Piston No. 2; 33. Control chamber; 34. Sealing cover; 35. Partition; 36. Space No. 1; 37. Space No. 2; 38. Conical through hole; 39. Conical plug; 40. Trigger rod; 41. Retaining ring; 42. Trigger spring. DETAILED DESCRIPTION

[0075] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0076] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0077] Embodiment 1: The present invention provides a technical solution: Figure 1 、 Figure 2 and Figure 3 As shown, a transformer box air tightness detection device includes a detection water tank 1, the top of the detection water tank 1 is open, a discharge pipe is connected and installed at the bottom of one side of the detection water tank 1, a detection frame 2 is set up in the detection water tank 1, and the detection frame 2 consists of four vertical arms and a top frame. The four vertical arms are distributed in the detection water tank 1 in a rectangular shape, and the top frame is welded to the top of the four vertical arms. A roller conveyor line is set up on one side of the detection water tank 1 to complete the rotation and transportation of the transformer oil tank 3, which is convenient for loading and unloading. It also includes:

[0078] The transformer oil tank 3 is placed on the detection frame 2 and waits for detection;

[0079] The lifting frame is slidably arranged on the detection frame 2 to control the lifting action of the transformer oil tank 3. A No. 1 cylinder 4 for controlling the lifting amount is installed between the lifting frame and the detection frame 2;

[0080] The detection mechanism is provided on the detection water tank 1 and is used for detecting the transformer oil tank 3;

[0081] The sealing mechanism is provided on the lifting frame to dynamically seal the top of the transformer oil tank 3. Two No. 2 cylinders 5 are symmetrically installed between the sealing mechanism and the lifting frame. An internal support member is provided in the sealing mechanism to improve the sealing performance.

[0082] A cleaning mechanism is provided between the sealing mechanism and the transformer tank 3 for active cleaning of the two. The cleaning mechanism can clean the connection between the sealing mechanism and the transformer tank 3 in a variable manner, and the cleaning mechanism can cooperate with the inner support member to improve the sealing performance of the sealing mechanism;

[0083] The lifting frame includes:

[0084] The lifting arm 6 is slidably arranged between the detection frames 2, and track wheels engaged with the vertical arms are provided at the four corners of the lifting arm 6. A detection platform 7 supporting the transformer oil tank 3 is provided at the bottom of the lifting arm 6 through a bracket, and the top of the lifting arm 6 is connected to the output end of the No. 1 cylinder 4 to complete the lifting control. A stopper that can limit the transformer oil tank 3 is provided on the detection platform 7.

[0085] Among them, electrical components such as cylinder No. 1 4, cylinder No. 2 5 and cylinder No. 3 28 are all connected to switches through wires, and the switches are electrically connected to a controller, and the specific structure of the controller is not limited.

[0086] Embodiment 2: Based on the sealing mechanism provided in embodiment 1, this embodiment provides a further technical solution for the sealing mechanism.

[0087] like Figure 4 and Figure 5 As shown, the sealing mechanism includes:

[0088] The sealing seat 8 is provided below the lifting frame, and the sealing seat 8 is connected to the output ends of the two No. 2 cylinders 5 to complete the lifting control. An assembly seat 9 is installed below the sealing seat 8. Guide rods are installed at the four corners of the assembly seat 9. The four guide rods are all slidably passed through the sealing seat 8. The tops of the four guide rods are provided with a limit block for limiting the downward movement of the assembly seat 9.

[0089] A seal 10 is detachably mounted on the lower surface of the assembly seat 9 and is used to seal the top of the transformer tank 3. The seal 10 is made of one or more of natural rubber, graphite composite gasket, nitrile rubber and silicone gasket, which can provide good sealing and is easy to replace.

[0090] It is worth noting that: when sealing: by providing a sealing mechanism, starting the No. 2 cylinder 5, controlling the sealing seat 8 to move downward as a whole, so that the seal 10 follows the downward movement and contacts the top of the transformer oil tank 3, and then continuing to control the No. 2 cylinder 5 to move downward, so that the seal 10 carries a predetermined pressure and contacts the transformer oil tank 3, thereby improving the sealing of the contact position between the two and avoiding interference with the detection accuracy.

[0091] like Figure 9 、 Figure 10 and Figure 11 As shown, the inner support member includes:

[0092] An annular groove 11 is hidden and formed on the lower surface of the assembly seat 9;

[0093] The annular bag 12 is hidden in the annular groove 11 to complete the internal support of the seal 10, and the top of the annular bag 12 is detachably fixed to the annular groove 11, so that the annular bag 12 can support the seal 10 after expansion. The annular bag 12 is specifically made of a material that can expand and contract, such as rubber, to achieve a good expansion support effect;

[0094] Two inlet pipes 13 are symmetrically connected and arranged on one side of the top of the annular bag 12. The two inlet pipes 13 slide through the sealing seat 8 and the assembly seat 9 respectively. A No. 1 one-way valve is installed at the end of the two inlet pipes 13 to feed the medium into the annular bag 12 in one direction;

[0095] Two outlet pipes 14 are symmetrically connected and arranged at the top of the annular bag 12 and on one side of the two inlet pipes 13. The two outlet pipes 14 slide through the sealing seat 8 and the assembly seat 9 respectively. A second one-way valve is installed at the end of the two outlet pipes 14 to send the medium out of the annular bag 12 in one direction;

[0096] In an embodiment of the present invention, the detection mechanism includes:

[0097] The detection unit 15 is provided on one side of the detection water tank 1 to complete the air tightness detection of the transformer oil tank 3. The detection unit 15 specifically adopts one of the air tightness tester, vacuum water pressure sealing performance tester and digital display vacuum sealing tester to complete the air tightness detection work;

[0098] The delivery connector 16 is connected to the sealing mechanism to complete the delivery work. The delivery connector 16 passes through the sealing seat 8, the assembly seat 9 and the sealing member 10 to deliver the detection medium into the transformer tank 3. The delivery connector 16 is connected to the detection unit 15 through a pipeline;

[0099] Four collection units 17 are correspondingly arranged around the inner wall of the detection water tank 1 to complete the multi-directional collection work of the transformer oil tank 3. The collection unit 17 is specifically replaced by underwater cameras, waterproof cameras and other data collection devices, which can complete the identification and collection of leakage location information of the transformer oil tank 3;

[0100] It is worth noting that: when conducting the inspection: by providing a detection mechanism, after the transformer oil tank 3 is sealed through the sealing mechanism, the transformer oil tank 3 is controlled to be immersed in the detection liquid of the detection water tank 1, and all the welding positions of the transformer oil tank 3 are immersed in the detection liquid and wait for inspection, and then the detection unit 15 is controlled to work, and gas is sent into the transformer oil tank 3 through the delivery joint 16 to perform an air tightness test on the transformer oil tank 3, and the dynamic detection of the transformer oil tank 3 is completed through the control unit, that is, the air pressure in the transformer oil tank 3 is changed to complete the detection work. At the same time, with the assistance of the four acquisition units 17, the leakage points of the transformer oil tank 3 can be quickly collected, which further improves the detection accuracy, and the collected information is transmitted to the external control end, which is convenient for subsequent re-inspection of the leakage points of the problem transformer oil tank 3.

[0101] Embodiment 3: Based on the cleaning mechanism provided in embodiment 1, this embodiment provides a further technical solution for the cleaning mechanism.

[0102] like Figure 6 、 Figure 7 and Figure 8 As shown, the cleaning mechanism includes:

[0103] Two transverse scrapers 18 are symmetrically arranged at the bottom of the sealing mechanism. Specifically, the transverse scrapers 18 are arranged on the lower surface of the sealing member 10. The top and bottom of the two transverse scrapers 18 are both installed with a detachable No. 1 scraper strip;

[0104] Two extension platforms 19 are welded to one side of the two transverse scrapers 18. A sensing arm 20 is fixedly mounted on the upper surface of the extension platform 19. A sensing wheel is rotatably mounted on the front end of the sensing arm 20. The sensing arm 20 is correspondingly slidably mounted on the sealing mechanism.

[0105] Two reset rods 21 are correspondingly arranged on one side of the two sensing arms 20. A fixed platform is provided on the sealing seat 8 of the sealing mechanism. The reset rod 21 slides through the fixed platform. A reset spring 22 for resetting is provided on the outside of the reset rod 21. The reset movement of the sensing wheel is controlled by the reset spring 22. Specifically, the sensing arm 20 is slidably connected to the sealing seat 8, and a limiting seat cooperating with the sensing arm 20 is provided on the sealing seat 8. Limiting rods are installed on both sides of the sensing arm 20 on the extension platform 19. Specifically, the limiting rod is slidably connected to the sealing seat 8, and a limiting seat cooperating with the limiting rod is provided on the sealing seat 8. A moving area 23 is opened on both sides of the two horizontal scrapers 18, and a slide seat 24 is slidably installed in each moving area 23;

[0106] Two longitudinal scrapers 25 are symmetrically arranged at the bottom of the sealing mechanism, and both ends of the two longitudinal scrapers 25 are detachably fixedly connected to the slide 24. Specifically, the longitudinal scrapers 25 are arranged on the lower surface of the sealing member 10. The two longitudinal scrapers 25 and the two transverse scrapers 18 are combined into a rectangular cleaning space that can change the size. Each longitudinal scraper 25 is composed of two cleaning plates 251 staggered. A sliding track 252 is opened through the two cleaning plates 251, and a slider is provided at the front end of the two cleaning plates 251. The slider of each cleaning member is slidably engaged in the sliding track 252 of the other cleaning plate 251. One end of the two cleaning plates 251 is connected to the slide 24, so that the two cleaning plates 251 slide and engage with each other to complete the telescopic action, and a detachable No. 2 scraper strip is installed on the top and bottom of the two cleaning plates 251;

[0107] The driving member is provided on the sealing mechanism to control the two transverse scrapers 18 and the longitudinal scraper 25 to complete the mobile cleaning work;

[0108] The cleanup agency also includes:

[0109] Multiple number one movable cavities 26 are correspondingly hidden and arranged in the multiple movable areas 23;

[0110] Multiple No. 1 piston members 27 are correspondingly and sealingly slidably arranged in the No. 1 moving chamber 26. The front end of each No. 1 piston member 27 is connected to the slide 24 to complete the movement control of the longitudinal scraper 25;

[0111] like Figure 12 and Figure 13 As shown, in an embodiment of the present invention, the driving member includes:

[0112] The third cylinder 28 is arranged on one side of the sealing mechanism. Specifically, the third cylinder 28 is arranged on one side of the sealing seat 8 through a bracket, and a control arm 29 is installed at the output end of the third cylinder 28;

[0113] Two power members 30 are symmetrically slidably arranged on both sides of the top of the sealing mechanism. Specifically, the two power members 30 are correspondingly slidably arranged on the top of the sealing seat 8, and a sliding area cooperating with the power members 30 is provided on the top of the sealing seat 8. The side walls of each power member 30 are formed with a starting section 301, an inclined section 302 and an ending section 303. The inclined section 302 is inclined to complete the movement control of the two transverse scrapers 18 and the longitudinal scraper 25, and the starting section 301, the inclined section 302 and the ending section 303 are all in contact with the sensing arm 20, and the inclination of the inclined section 302 can be freely replaced and set according to actual movement requirements;

[0114] Two No. 2 movable chambers 31 are symmetrically arranged on both sides of the top of the sealing seat 8 of the sealing mechanism. A No. 2 piston member 32 is sealed and slidably installed in each No. 2 movable chamber 31, and the front end of the No. 2 piston member 32 is transmission-connected to the power member 30. The tail ends of the two No. 2 movable chambers 31 are respectively connected to the No. 1 movable chamber 26 of the two transverse scrapers 18 through pipes. The connecting pipes between the two are specifically flexible telescopic pipes that can complete telescopic movements. A quantitative medium is injected into the No. 2 movable chamber 31. The medium is specifically one of oil and gas, preferably oil, which can complete stable triggering work. The tail ends of the two No. 2 movable chambers 31 are respectively connected to the lead-out pipes 14 of the two inner support members through pipes to complete control.

[0115] It is worth noting that during active cleaning, the cleaning mechanism is provided to control the No. 3 air cylinder 28, causing the sensing arm 20 to return to the starting section 301. At this time, the two transverse scrapers 18 and the two longitudinal scrapers 25 are both in a contracted state. At this time, the seal 10 moves downward and simultaneously drives the two transverse scrapers 18 and the two longitudinal scrapers 25 to move downward until the two transverse scrapers 18 and the two longitudinal scrapers 25 contact the top of the transformer tank 3.

[0116] Then the No. 3 cylinder 28 is controlled again to push the two power parts 30 to move. Under the extrusion guidance of the inclined section 302, the sensing arm 20 is pushed to overcome the elasticity of the return spring 22 and move, so that the two horizontal scrapers 18 move away from each other, thereby completing the active cleaning of the contact position of the transformer oil tank 3 and the seal 10. During the movement of the power part 30, the No. 2 piston part 32 is synchronously driven to move, and the medium in the No. 2 moving chamber 31 is squeezed and transported to the No. 1 moving chamber 26, and the No. 1 piston part 27 is synchronously triggered to move in the No. 1 moving chamber 26, and the two longitudinal scrapers 25 are linked to follow the movement, thereby completing the active cleaning of the contact position of the transformer oil tank 3 and the seal 10. The two horizontal scrapers 18 and the two longitudinal scrapers 25 form a dimensional change of the rectangular space, thereby completing the cleaning action. Under the design of the two horizontal scrapers 18 and the longitudinal scrapers 25, the contact position of the transformer oil tank 3 and the seal 10 can be compensated and cleaned, thereby improving the cleaning accuracy;

[0117] At the same time, the longitudinal scraper 25 adopts the design of two cleaning plates 251. When the longitudinal scraper 25 moves for cleaning, the two cleaning plates 251 slide against each other to complete the length change, which can compensate for the movement of the two transverse scrapers 18 and avoid the problem of cleaning dead angles. It stops until the sensing arm 20 moves to the connection position of the end section 303 and the inclined section 302, and then stops. At this time, the two transverse scrapers 18 and the longitudinal scraper 25 all move to the edge of the seal 10 to complete the avoidance, avoiding interference with the sealing of the transformer oil tank 3 and the seal 10. When cleaning is needed later, it is only necessary to control the No. 3 cylinder 28 to control the sensing arm 20 to move to the contact position with the starting section 301 and wait for cleaning work. When cleaning is not needed, the sensing arm 20 is controlled to move to the position of the end section 303 to complete the avoidance, which is flexible and adaptable.

[0118] like Figure 14 and Figure 15 As shown, the driving member also includes:

[0119] Two control members are correspondingly arranged on one side of the two transverse scrapers 18 of the cleaning mechanism to complete the switching control of the internal support members. Each control member includes a control chamber 33, a sealing cover 34 and a partition 35. The control chamber 33 is arranged on one side of the transverse scraper 18 of the cleaning mechanism. The sealing cover 34 is detachably arranged on the top of the control chamber 33 to complete the sealing. The partition 35 is arranged in the middle position of the control chamber 33. The control chamber 33 is divided into a first space 36 and a second space 37 by the partition 35. A first pipe connected to the first space 36 is installed on one side of the control chamber 33. The first pipe is connected to the tail of the second movable chamber 31 through a pipe. The connecting pipes of the two are specifically flexible telescopic pipes that can complete the telescopic action. A second pipe connected to the second space 37 is installed on the sealing cover 34. The second pipe is connected to the inlet pipe 13 of the sealing mechanism through a pipe. The connecting pipes of the two are specifically flexible telescopic pipes that can complete the telescopic action.

[0120] Two conical through holes 38 are formed on the two partitions 35 respectively. Conical plugs 39 are installed in the two conical through holes 38 to seal the conical through holes 38. The conical plugs 39 are used to seal the conical through holes 38. The shape characteristics of the conical plugs 39 and the conical through holes 38 cooperate to achieve one-way control of the first space 36 toward the second space 37. Under normal circumstances, the medium in the first space 36 cannot enter the second space 37.

[0121] Two trigger rods 40 are respectively and sealedly slid through one side of the two control chambers 33 and connected to the tapered plug 39. A retaining ring 41 is sleeved on the outside of each trigger rod 40. A trigger spring 42 is sleeved on the outside of each trigger rod 40. The trigger spring 42 is correspondingly arranged between the retaining ring 41 and the control chamber 33 to pull the tapered plug 39 back to block the tapered through-hole 38. The front ends of the trigger rods 40 cooperate with the cleaning mechanism to complete the triggering. When the longitudinal scraper 25 of the cleaning mechanism completes the cleaning, it contacts the trigger rod 40 to complete the squeezing trigger, so that the tapered plug 39 is separated from the tapered through-hole 38 to complete the opening.

[0122] It is worth noting that: when the sealing performance of the sealing mechanism is improved: by providing an internal support member, under normal circumstances, the medium in the No. 1 space 36 cannot enter the No. 2 space 37, so when the power member 30 moves, the medium in the No. 2 moving chamber 31 can only enter the No. 1 moving chamber 26 to complete the triggering. When the cleaning mechanism is completed, the longitudinal scraper 25 makes an evasive movement and contacts the trigger rod 40 to complete the triggering, pushing the trigger rod 40 and the conical plug 39 to move and open the conical through hole 38. At this time, the No. 1 space 36 and the No. 2 space 37 are interconnected, and the No. 3 cylinder 28 continues to be controlled to move, and the medium in the No. 2 moving chamber 31 is sent through the No. 1 pipe The medium enters the No. 1 space 36 and is then transported to the inlet pipe 13 through the No. 2 space 37 and the No. 2 pipe, so that the medium in the No. 2 mobile chamber 31 is simultaneously sent into the annular bag 12, so that the annular bag 12 expands to complete the internal expansion support of the seal 10 to complete the compensation, so that the seal 10 maintains a good sealing state, avoids the problem of excessive deformation of the seal 10 and a decrease in the sealing effect, and improves the sealing effect. The expansion amount of the annular bag 12 can be controlled by controlling the extension amount of the No. 3 cylinder 28, which can be freely set according to work requirements. The annular bag 12 can be restored by subsequently controlling the No. 3 cylinder 28 to reset, which is convenient for the staff to operate and use.

[0123] Example 4: A method for detecting air tightness of a transformer box, the method specifically comprising the following steps:

[0124] Step 1: Control the No. 1 cylinder 4 to raise the lifting frame, and transfer the transformer oil tank 3 to the lifting frame via the roller conveyor line;

[0125] Step 2: Use the No. 2 cylinder 5 to control the sealing mechanism to move downward to complete the active sealing of the transformer oil tank 3. Use the No. 1 cylinder 4 again to control the lifting frame and the transformer oil tank 3 to move downward into the test water tank 1 to wait for the air tightness test;

[0126] Step 3: Start the detection mechanism to cooperate with the detection water tank 1 to complete the air tightness pressure test on the transformer oil tank 3;

[0127] Step 4: The cleaning mechanism completes the cleaning work at the connection between the sealing mechanism and the transformer oil tank 3, thereby ensuring the sealing of the connection between the two.

[0128] The present invention provides a transformer box air tightness detection device and method, the specific working principle is as follows: first, a fixed amount of detection liquid is injected into the detection water tank 1, and then the No. 1 cylinder 4 is controlled to raise the lifting frame, and the transformer oil tank 3 is transferred to the lifting frame via the roller conveyor line, and then the No. 2 cylinder 5 is used to control the sealing mechanism to move downward to complete the active sealing of the transformer oil tank 3, and the No. 1 cylinder 4 is used again to control the lifting frame and the transformer oil tank 3 to move downward into the detection water tank 1 to wait for the air tightness detection, and then the detection mechanism is started to cooperate with the detection water tank 1 to complete the air tightness pressure test of the transformer oil tank 3. The overall detection operation is convenient, and there is no need to repeatedly seal the transformer oil tank 3, which optimizes the detection process and greatly improves the detection efficiency.

[0129] By providing a sealing mechanism, the transformer oil tank 3 can be deeply sealed during a single inspection process, which is beneficial to the inspection of the weld of the transformer oil tank 3. At the same time, there is no need to repeatedly disassemble and assemble the top plate of the transformer oil tank 3, which is beneficial to the efficient inspection work. At the same time, a cleaning mechanism is added to the sealing mechanism. The design of the cleaning mechanism can fully meet the cleaning work of the connection between the sealing mechanism and the transformer oil tank 3. Under the control of the driving member, the two horizontal scrapers 18 and the longitudinal scraper 25 are synchronously controlled to complete the compensatory cleaning of the connection between the sealing mechanism and the transformer oil tank 3 in a size-changing manner, thereby improving the cleaning accuracy and ensuring the sealing of the connection between the two. Moreover, the cleaning mechanism can complete active avoidance after cleaning is completed to avoid obstruction of the sealing mechanism.

[0130] At the same time, with the cooperation of the driving part and the control part, the internal support part can be actively switched and controlled, so that the internal support part moves in the sealing mechanism to complete the reinforced seal, further enhancing the sealing performance of the sealing mechanism, and being able to fully compensate for the uneven area between the sealing mechanism and the transformer oil tank 3, providing a safe and stable sealing effect, thereby improving the accuracy of the overall airtightness detection, facilitating the discovery of welding weaknesses of the transformer oil tank 3, and facilitating the subsequent improvement and upgrading of the production process of the transformer oil tank 3.

[0131] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0132] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A transformer box air tightness detection device, comprising a detection water tank, a detection frame is set up in the detection water tank, characterized in that: Also includes: Transformer tank, set on the inspection frame waiting for inspection; The lifting frame is slidably arranged on the detection frame to control the lifting and lowering of the transformer oil tank. A No. 1 cylinder for controlling the lifting amount is installed between the lifting frame and the detection frame; The detection mechanism is installed on the detection water tank and is used for the detection of the transformer oil tank; The sealing mechanism is installed on the lifting frame to dynamically seal the top of the transformer tank. Two No. 2 cylinders are symmetrically installed between the sealing mechanism and the lifting frame. An internal support is provided in the sealing mechanism to improve the sealing performance. A cleaning mechanism is provided between the sealing mechanism and the transformer tank for active cleaning of both. The cleaning mechanism can clean the connection between the sealing mechanism and the transformer tank in a variable manner and can cooperate with the inner support member to improve the sealing performance of the sealing mechanism; The cleanup agency includes: Two transverse scrapers are symmetrically arranged at the bottom of the sealing mechanism; Two extension platforms are welded to one side of the two transverse scrapers. A sensing arm is fixedly installed on the upper surface of the extension platform, and a sensing wheel is rotatably installed at the front end of the sensing arm. The sensing arm is correspondingly slidably arranged on the sealing mechanism; Two reset rods are respectively arranged on one side of the two sensing arms. A reset spring is sleeved on the outside of the reset rod for resetting. A moving area is opened on both sides of the two horizontal scrapers. A slide is slidably installed in each moving area. Two longitudinal scrapers are symmetrically arranged at the bottom of the sealing mechanism. The two longitudinal scrapers and the two transverse scrapers are combined to form a rectangular cleaning space with variable size. Each longitudinal scraper is composed of two staggered cleaning plates. Sliding tracks are opened on both cleaning plates to enable the two cleaning plates to slide and engage with each other to complete the telescopic action. The driving member is arranged on the sealing mechanism to control the two horizontal scrapers and the longitudinal scraper to complete the mobile cleaning work.

2. The transformer box air tightness detection device according to claim 1, characterized in that: The lifting frame includes: The lifting arm is slidably arranged between the detection frames, and a detection platform for supporting the transformer oil tank is arranged at the bottom of the lifting arm through a bracket.

3. The transformer box air tightness detection device according to claim 1, characterized in that: The sealing mechanism includes: The sealing seat is set below the lifting frame, and the sealing seat is connected to the output ends of the two No. 2 cylinders to complete the lifting control. An assembly seat is installed below the sealing seat, and guide rods are installed at the four corners of the assembly seat; The seal can be removably installed on the lower surface of the assembly seat to complete the sealing of the top of the transformer oil tank.

4. The transformer box air tightness detection device according to claim 3, characterized in that: The inner support comprises: An annular groove is hidden and formed on the lower surface of the assembly seat; The annular bag is hidden in the annular groove to complete the internal support action of the seal; Two inlet pipes are symmetrically connected and arranged on one side of the top of the annular bag; The two outlet pipes are symmetrically connected and arranged on the top of the annular bag and are located on one side of the two inlet pipes.

5. The transformer box air tightness detection device according to claim 1, characterized in that: The testing agencies include: The detection unit is installed on one side of the test water tank to complete the air tightness test of the transformer oil tank; The conveying joint is connected to the sealing mechanism to complete the conveying work; Four collection units are correspondingly arranged around the inner wall of the detection water tank to complete the multi-directional collection work of the transformer oil tank.

6. The transformer box air tightness detection device according to claim 1, characterized in that: The cleanup agency also includes: Multiple No. 1 moving cavities are correspondingly hidden and arranged in multiple moving areas; Multiple No. 1 piston components are correspondingly sealed and slidably arranged in the No. 1 moving chamber, and the front end of each No. 1 piston component is connected to the sliding seat to complete the movement control of the longitudinal scraper.

7. The transformer box air tightness detection device according to claim 6, characterized in that: The drive element includes: The third cylinder is arranged on one side of the sealing mechanism, and a control arm is installed at the output end of the third cylinder; Two power members are symmetrically slidably arranged on both sides of the top of the sealing mechanism. The side walls of each power member are formed with a starting section, an inclined section and an ending section. The inclined section is inclined to complete the movement control of the two horizontal scrapers and the longitudinal scraper; The two No. 2 moving chambers are symmetrically arranged on both sides of the top of the sealing mechanism. A No. 2 piston is sealed and slidably installed in each No. 2 moving chamber, and the front end of the No. 2 piston is transmission-connected to the power part. The tail ends of the two No. 2 moving chambers are connected to the No. 1 moving chambers of the two transverse scrapers through pipes respectively, and the tail ends of the two No. 2 moving chambers are connected to the two inner support parts through pipes respectively to complete the control.

8. The transformer box air tightness detection device according to claim 7, characterized in that: The drive also includes: Two control members are correspondingly arranged on one side of the cleaning mechanism to complete the switching control of the internal support member. Each control member includes a control chamber, a sealing cover and a partition. The control chamber is arranged on one side of the cleaning mechanism. The sealing cover is detachably arranged on the top of the control chamber to complete the blockage. The partition is arranged in the middle position of the control chamber. The control chamber is divided into a first space and a second space by the partition. A first pipe connected to the first space is installed on one side of the control chamber. The first pipe is connected to the tail of the second movable chamber through a pipeline. A second pipe connected to the second space is installed on the sealing cover. The second pipe is connected to the sealing mechanism through a pipeline. Two conical through holes are correspondingly opened through the two partitions, and conical plugs are sealed and installed in the two conical through holes to complete the sealing of the conical through holes through the conical plugs; Two trigger rods are respectively sealed and slid through one side of the two control chambers to be connected to the conical plug. A retaining ring is sleeved on the outside of each trigger rod. A trigger spring is sleeved on the outside of each trigger rod. The front end of the trigger rod cooperates with the cleaning mechanism to complete the triggering. When the cleaning mechanism completes the cleaning, it contacts the trigger rod to complete the extrusion trigger, so that the conical plug is separated from the conical through hole to complete the opening.

9. A method for detecting air tightness of a transformer box, using a transformer box air tightness detection device according to any one of claims 1 to 8, characterized in that: The detection method specifically comprises the following steps: Step 1: Control the No. 1 cylinder to raise the lifting frame, and transfer the transformer oil tank to the lifting frame via the roller conveyor line; Step 2: Use the No. 2 cylinder to control the sealing mechanism to move downward to complete the active sealing of the transformer oil tank. Use the No. 1 cylinder again to control the lifting frame and the transformer oil tank to move downward into the test water tank to wait for air tightness testing; Step 3: Start the detection mechanism and cooperate with the detection water tank to complete the air tightness pressure test on the transformer tank; Step 4: Use the cleaning mechanism to clean the connection between the sealing mechanism and the transformer tank, thereby ensuring the sealing of the connection between the two.

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