Device and method for detecting air tightness of transformer box body

Abstract

The invention discloses an air tightness detection device and method for a transformer box body, and particularly relates to the technical field of transformer detection, the air tightness detection device for the transformer box body comprises a detection water tank and a transformer oil tank, a detection frame is erected in the detection water tank, and the transformer oil tank is arranged on the detection frame to wait for detection. By arranging the sealing mechanism, the transformer oil tank can be deeply sealed and blocked in the single detection process, a top plate of the transformer oil tank does not need to be repeatedly disassembled and assembled, the detection process is optimized, and the design of the cleaning mechanism is adopted; the two transverse scraping plates and the two longitudinal scraping plates are synchronously controlled to complete compensation cleaning of the connecting position of the sealing mechanism and the transformer oil tank in a size changing mode, the sealing performance of the connecting position is guaranteed, meanwhile, the inner supporting piece can be actively switched and controlled, the uneven area between the sealing mechanism and the transformer oil tank is fully compensated, and the safe and stable sealing effect is provided; and the welding weakness of the transformer oil tank is explored.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer detection, and in particular to a transformer box air tightness detection device and method. 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 use conditions and ensure the quality of the transformer leaving the factory. The following methods are used to test the transformer oil tank: Direct pressure type: The sealing is judged by filling gas and monitoring the pressure change. It has a simple structure and is suitable for containers of various shapes and sizes. Differential pressure type: Compare the gas pressure difference between the measured container and the reference container, with high accuracy and stability; ‌Negative pressure type‌: monitor pressure changes after forming a negative pressure environment; Since the overall volume of the oil tank of an oil-immersed transformer is relatively large, in actual testing, direct pressure testing with testing liquid is often used for air tightness testing. This can meet the testing needs of different transformer oil tanks, has high adaptability, and reduces the overall difficulty of testing.

[0003] A transformer box air tightness detection device disclosed in the patent with reference publication number CN110672284B determines whether the oil tank has an air gap based on the value 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.

[0004] The above detection device can effectively judge the air tightness through the values ​​of the first pressure sensor and the second pressure sensor, but the above detection device needs to assemble and seal the top plate of the transformer oil tank before performing the detection work in a single detection process; 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 detection difficulty and workload 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, and the airtightness of the welding point of the transformer oil tank cannot be accurately obtained, 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

[0005] The object of the present invention is to provide a transformer box air tightness detection device and method to solve the above technical problems.

[0006] To solve the above technical problems, the present invention is implemented through the following technical solutions.

[0007] The present invention is a transformer box air tightness detection device, comprising a detection water tank, a detection frame is set up in the detection water tank, and further comprising: Transformer oil tank, set on the inspection frame waiting for inspection; A lifting frame is slidably arranged on the detection frame to control the lifting action of the transformer oil tank, and a No. 1 cylinder for controlling the lifting amount is installed between the lifting frame and the detection frame; The detection mechanism is arranged on the detection water tank and is used for the detection of the transformer oil tank; The sealing mechanism is provided on the lifting frame to dynamically seal the top of the transformer oil tank, and two No. 2 cylinders are symmetrically installed between the sealing mechanism and the lifting frame, and an internal support member for improving the sealing performance is provided in the sealing mechanism; 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 inner support member to improve the sealing performance of the sealing mechanism.

[0008] Furthermore, the lifting frame comprises: 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.

[0009] Furthermore, the sealing mechanism comprises: The sealing seat is arranged 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.

[0010] Furthermore, the inner support member comprises: An annular groove is hidden and opened on the lower surface of the assembly seat; The annular bag is hidden in the annular groove to complete the inner support action of the seal; Two introduction tubes are symmetrically connected and arranged on one side of the top of the annular sac; The two outlet pipes are symmetrically connected and arranged at the top of the annular bag and are located at one side of the two inlet pipes.

[0011] Furthermore, the testing organization includes: The detection unit is arranged on one side of the detection water tank to complete the air tightness detection 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.

[0012] Further, the cleaning mechanism comprises: Two transverse scrapers are symmetrically arranged at the bottom of the sealing mechanism; Two extension platforms are welded and arranged on 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 correspondingly arranged on one side of the two sensing arms, and a reset spring for resetting is sleeved on the outside of the reset rods. Moving areas are opened on both sides of the two transverse scrapers, and a slide seat 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 a changeable size. Each longitudinal scraper is composed of two staggered cleaning plates. Sliding tracks are provided on the two 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 transverse scrapers and the longitudinal scraper to complete the mobile cleaning work.

[0013] Furthermore, the cleaning mechanism also includes: A plurality of No. 1 moving cavities are correspondingly hidden and arranged in a plurality of moving areas; A plurality of 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.

[0014] Furthermore, the driving member comprises: 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 wall of each power member is 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; Two No. 2 moving chambers are symmetrically arranged on both sides of the top of the sealing mechanism. A No. 2 piston member is sealed and slidably installed in each No. 2 moving chamber, and the front end of the No. 2 piston member is transmission connected to the power member, and the tail parts of the two No. 2 moving chambers are connected to the No. 1 moving chambers of the two transverse scrapers through pipelines respectively, and the tail parts of the two No. 2 moving chambers are connected to the two inner support members through pipelines respectively to complete the control.

[0015] Furthermore, the driving member further comprises: Two control members are correspondingly arranged on one side of the cleaning mechanism to complete the switching control of the inner 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 plugging. The partition is arranged in the middle position of the control chamber. The control chamber is divided into a No. 1 space and a No. 2 space by the partition. A No. 1 pipe connected to the No. 1 space is installed on one side of the control chamber. The No. 1 pipe is connected to the tail of the No. 2 movable chamber through a pipeline. A No. 2 pipe connected to the No. 2 space is installed on the sealing cover. The No. 2 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, and the conical through holes are sealed by 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.

[0016] The present invention also provides a method for detecting air tightness of a transformer box, which 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: Control the sealing mechanism by the No. 2 cylinder to move downward to complete active sealing of the transformer oil tank, and control the lifting frame and the transformer oil tank by the No. 1 cylinder to move downward to 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 oil tank; Step 4: The cleaning work of the connection between the sealing mechanism and the transformer oil tank is completed by the cleaning mechanism, thereby ensuring the sealing of the connection between the two.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention is provided with a sealing mechanism, which can complete the deep sealing and blocking of the transformer oil tank in 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 of the transformer oil tank, while eliminating the need to repeatedly disassemble and assemble the top plate of the transformer oil tank; 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 size-changing manner, thereby ensuring the sealing of the connection between the two. After the cleaning is completed, the cleaning mechanism can complete active avoidance to avoid blocking the sealing mechanism. The present invention can actively switch and control the inner support member under the cooperation of the driving member and the control member, so that the inner 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 of the transformer oil tank, and facilitating the subsequent improvement and upgrading of the production process of the transformer oil tank.

[0018] 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

[0019] Figure 1 It is the overall front view of the present invention; Figure 2 This is a schematic diagram of the detection water tank of the present invention; Figure 3 It is a schematic diagram of the distribution of the lifting frame and the transformer oil tank of the present invention; Figure 4 It is a schematic diagram of the contact between the sealing mechanism of the present invention and the transformer oil tank; Figure 5 It is a schematic diagram of the sealing mechanism of the present invention; Figure 6 It is a schematic diagram of the cleaning mechanism of the present invention; Figure 7 It is a schematic diagram of the distribution of two transverse scrapers and longitudinal scrapers of the present invention; Figure 8 It is a schematic diagram of the longitudinal scraper structure of the present invention; Fig. 9 It is a schematic diagram of the installation of the inner support member of the present invention in the sealing mechanism; Fig.10 It is a schematic diagram of the inner support member of the present invention; Fig.11 It is a schematic diagram of the distribution of the cleaning mechanism and the inner support members of the present invention; Fig.12 It is a schematic diagram of the distribution of the driving member, two transverse scrapers and a longitudinal scraper of the present invention; Fig.13 It is a schematic diagram of a driving member of the present invention; Fig.14It is a schematic diagram of installing the control member of the present invention on the transverse scraper; Fig.15 It is a schematic diagram of the control component structure of the present invention.

[0020] In the figure: 1. detection water tank; 2. detection frame; 3. transformer oil tank; 4. No. 1 cylinder; 5. No. 2 cylinder; 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. conveying joint; 17. collection unit; 18. transverse scraper; 19. extension table; 20. sensing arm; 21. reset rod; 22. reset spring; 23. moving area; 24. slide 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, tilting section; 303, ending 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, tapered through hole; 39, tapered plug; 40, trigger rod; 41, retaining ring; 42, trigger spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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.

[0023] 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 is composed 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, and also includes: The transformer oil tank 3 is arranged on the detection frame 2 and waits for detection; A lifting frame is slidably arranged on the detection frame 2 to control the lifting action of the transformer oil tank 3, and a No. 1 cylinder 4 for controlling the lifting amount is installed between the lifting frame and the detection frame 2; A detection mechanism, arranged on the detection water tank 1, is used for detection of the transformer oil tank 3; The sealing mechanism is provided on the lifting frame to dynamically seal the top of the transformer oil tank 3, and two No. 2 cylinders 5 are symmetrically installed between the sealing mechanism and the lifting frame, and an internal support member for improving the sealing performance is provided in the sealing mechanism; A cleaning mechanism is provided between the sealing mechanism and the transformer oil tank 3 for active cleaning of the two. The cleaning mechanism can complete the cleaning operation at the connection between the sealing mechanism and the transformer oil 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; The lifting frame includes: The lifting arm 6 is slidably arranged between the detection frames 2, and track wheels engaged with the vertical arms are arranged at the four corners of the lifting arm 6. A detection platform 7 for supporting the transformer oil tank 3 is arranged 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, and a stopper capable of limiting the transformer oil tank 3 is arranged on the detection platform 7.

[0024] Among them, electrical components such as the No. 1 cylinder 4, the No. 2 cylinder 5 and the No. 3 cylinder 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.

[0025] Embodiment 2: Based on the sealing mechanism provided in Embodiment 1, this embodiment provides a further technical solution of the sealing mechanism.

[0026] like Figure 4 and Figure 5 As shown, the sealing mechanism includes: The sealing seat 8 is arranged 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 blocks for limiting, which can limit the downward movement of the assembly seat 9 to the extreme position; The seal 10 is detachably mounted on the lower surface of the assembly seat 9 and is used to seal the top of the transformer oil tank 3. The seal 10 is specifically made of one or more of natural rubber, graphite composite pad, nitrile rubber and silicone sealing pad, which can provide good sealing performance and facilitate replacement; It is worth noting that: when sealing is performed: 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 sealing member 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 sealing member 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.

[0027] like Fig. 9 , Fig.10 and Fig.11 As shown, the inner support member includes: An annular groove 11 is hidden and opened on the lower surface of the assembly seat 9; The annular bag 12 is hidden in the annular groove 11 to complete the inner support action 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 rubber or other materials that can expand and contract, so as to achieve a good expansion support effect; 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 correspondingly. A No. 1 one-way valve for feeding the medium into the annular bag 12 in one direction is installed at the ends of the two inlet pipes 13; Two outlet pipes 14 are symmetrically connected and arranged at the top of the annular bag 12 and located 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 correspondingly. The ends of the two outlet pipes 14 are both equipped with a No. 2 one-way valve for sending the medium out of the annular bag 12 in one direction; In an embodiment of the present invention, the detection mechanism includes: The detection unit 15 is arranged at 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 uses one of an air tightness detector, a vacuum water pressure sealing performance tester and a digital display vacuum sealing tester to complete the air tightness detection work; A delivery joint 16 is connected to the sealing mechanism to complete the delivery work. The delivery joint 16 passes through the sealing seat 8, the assembly seat 9 and the sealing member 10 to deliver the detection medium into the transformer oil tank 3. The delivery joint 16 is connected to the detection unit 15 through a pipeline; 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 other data collection equipment such as underwater cameras and waterproof cameras, and can complete the identification and collection of the leakage position information of the transformer oil tank 3; It is worth noting that: when conducting the inspection: by providing a detection mechanism, after the transformer oil tank 3 is sealed by 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 to 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, and the transformer oil tank 3 is tested for air tightness, and the dynamic detection of the transformer oil tank 3 is completed by the control unit, that is, the air pressure in the transformer oil tank 3 is changed, so as to complete the detection work, and at the same time, with the assistance of four collection 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, so as to facilitate the subsequent re-inspection of the leakage points of the problematic transformer oil tank 3.

[0028] Embodiment 3: Based on the cleaning mechanism provided in Embodiment 1, this embodiment provides a further technical solution for the cleaning mechanism.

[0029] like Figure 6 , Figure 7 and Figure 8 As shown, the cleaning mechanism includes: 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; Two extension platforms 19 are welded and arranged on one side of the two transverse scrapers 18. A sensing arm 20 is fixedly installed on the upper surface of the extension platform 19. A sensing wheel is rotatably installed at the front end of the sensing arm 20. The sensing arm 20 is correspondingly slidably arranged on the sealing mechanism. Two reset rods 21 are correspondingly arranged on one side of the two sensing arms 20. A fixed platform is arranged 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 sleeved 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 with the sealing seat 8. A limiting seat cooperating with the sensing arm 20 is arranged 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 with the sealing seat 8. A limiting seat cooperating with the limiting rod is arranged on the sealing seat 8. Moving areas 23 are opened on both sides of the two transverse scrapers 18, and a sliding seat 24 is slidably installed in each moving area 23. 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 seat 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 whose size can be changed. Each longitudinal scraper 25 is composed of two cleaning plates 251 staggered. Sliding tracks 252 are provided through the two cleaning plates 251, and sliders are provided at the front ends 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 seat 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; A driving member is arranged on the sealing mechanism to control the two transverse scrapers 18 and the longitudinal scraper 25 to complete the mobile cleaning work; The cleanup agency also includes: A plurality of first movable cavities 26 are correspondingly hidden and arranged in the plurality of movable areas 23; A plurality of No. 1 piston members 27 are correspondingly and sealingly slidably arranged in the No. 1 moving chamber 26, and the front end of each No. 1 piston member 27 is connected to the slide seat 24 to complete the movement control of the longitudinal scraper 25; like Fig.12 and Fig.13 As shown, in the embodiment of the present invention, the driving member includes: 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; 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 arranged on the top of the sealing seat 8. The side wall of each power member 30 is 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 amount of the inclined section 302 can be freely replaced and set according to the actual movement requirements; Two No. 2 moving 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 moving chamber 31, and the front end of the No. 2 piston member 32 is transmission-connected to the power member 30, and the tails of the two No. 2 moving chambers 31 are respectively connected to the No. 1 moving chamber 26 of the two transverse scrapers 18 through pipelines. The connecting pipelines of the two specifically adopt flexible telescopic pipelines, which can complete the telescopic action. A quantitative medium is injected into the No. 2 moving chamber 31. The medium specifically adopts one of oil and gas, preferably oil, which can complete a stable triggering work, and the tails of the two No. 2 moving chambers 31 are respectively connected to the lead-out pipes 14 of the two inner support members through pipelines to complete the control; It is worth noting that: when active cleaning is performed: by providing a cleaning mechanism, the No. 3 cylinder 28 is controlled to reset the sensing arm 20 to the starting section 301, at which time the two transverse scrapers 18 and the two longitudinal scrapers 25 are both in a contracted state, and 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 oil tank 3; Then, the No. 3 cylinder 28 is controlled again to push the two power members 30 to move. Under the extrusion and guidance of the inclined section 302, the sensing arm 20 is pushed to overcome the elasticity of the return spring 22 to move, so that the two transverse 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 member 30, the No. 2 piston member 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 member 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 transformer oil tank 3 and the contact position of the seal 10. The two transverse 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 transverse 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. 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 corners. It stops until the sensing arm 20 moves to the connection position of the end section 303 and the inclined section 302. At this time, the two transverse scrapers 18 and the longitudinal scraper 25 are moved 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 required 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 required, the sensing arm 20 is controlled to move to the position of the end section 303 to complete the avoidance. It is flexible and adaptable. like Fig.14 and Fig.15 As shown, the driving member also includes: 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 inner 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 blocking. The partition 35 is arranged in the middle position of the control chamber 33. The control chamber 33 is divided into a No. 1 space 36 and a No. 2 space 37 by the partition 35. A No. 1 pipe connected to the No. 1 space 36 is installed on one side of the control chamber 33. The No. 1 pipe is connected to the tail of the No. 2 movable chamber 31 through a pipeline. The connecting pipeline of the two is specifically a flexible telescopic pipeline, which can complete the telescopic action. A No. 2 pipe connected to the No. 2 space 37 is installed on the sealing cover 34. The No. 2 pipe is connected to the introduction pipe 13 of the sealing mechanism through a pipeline. The connecting pipeline of the two is specifically a flexible telescopic pipeline, which can complete the telescopic action. Two conical through holes 38 are correspondingly formed on the two partitions 35. Conical plugs 39 are sealed in the two conical through holes 38. The conical plugs 39 are used to seal the conical through holes 38. The conical plugs 39 and the conical through holes 38 are used to coordinate the shape characteristics of the conical plugs 39 and the conical through holes 38 to achieve one-way control of the first space 36 toward the second space 37, so that under normal conditions, the medium in the first space 36 cannot enter the second space 37. Two trigger rods 40 are respectively sealed and slid through one side of the two control chambers 33 to be connected with the conical 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 conical plug 39 back to block the conical through hole 38. The front ends of the trigger rods 40 are respectively matched 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 extrusion triggering, so that the conical plug 39 is separated from the conical through hole 38 to complete the opening. It is worth noting that: when the sealing performance of the sealing mechanism is improved: by providing an internal support member, under normal conditions, the medium in the No. 1 space 36 cannot enter the No. 2 space 37. Therefore, 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 completes the cleaning, the longitudinal scraper 25 performs 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. The medium in the No. 2 moving chamber 31 is sent through the No. 1 pipe 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 reduced sealing effect due to excessive deformation of the seal 10, 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.

[0030] Embodiment 4: A method for detecting air tightness of a transformer box, the method specifically comprising the following steps: 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; Step 2: Control the sealing mechanism to move downward through the No. 2 cylinder 5 to complete active sealing of the transformer oil tank 3, and control the lifting frame and the transformer oil tank 3 to move downward into the test water tank 1 through the No. 1 cylinder 4 to wait for air tightness testing; 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; Step 4: The cleaning mechanism is used to clean the connection between the sealing mechanism and the transformer oil tank 3, thereby ensuring the sealing of the connection between the two.

[0031] The present invention provides a transformer box air tightness detection device and method, and the specific working principle is as follows: first, a quantitative 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 down to complete the active blocking 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 down to the detection water tank 1 to wait for 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 block the transformer oil tank 3, which optimizes the detection process and greatly improves the detection efficiency; By providing a sealing mechanism, the transformer oil tank 3 can be sealed deeply in a single detection process, which is beneficial to the detection 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 detection 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. After the cleaning is completed, the cleaning mechanism can complete active avoidance to avoid blocking the sealing mechanism. 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.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. 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, in which a detection frame is set up, characterized in that: Also includes: Transformer oil tank, set on the inspection frame waiting for inspection; A lifting frame is slidably arranged on the detection frame to control the lifting action of the transformer oil tank, and a No. 1 cylinder for controlling the lifting amount is installed between the lifting frame and the detection frame; The detection mechanism is arranged on the detection water tank and is used for the detection of the transformer oil tank; The sealing mechanism is provided on the lifting frame to dynamically seal the top of the transformer oil tank, and two No. 2 cylinders are symmetrically installed between the sealing mechanism and the lifting frame, and an internal support member for improving the sealing performance is provided in the sealing mechanism; 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 inner support member to improve the sealing performance of the sealing mechanism.

2. A 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. A transformer box air tightness detection device according to claim 1, characterized in that: The sealing mechanism comprises: The sealing seat is arranged 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. A transformer box air tightness detection device according to claim 3, characterized in that: The inner support comprises: An annular groove is hidden and opened on the lower surface of the assembly seat; The annular bag is hidden in the annular groove to complete the inner support action of the seal; Two introduction tubes are symmetrically connected and arranged on one side of the top of the annular sac; The two outlet pipes are symmetrically connected and arranged at the top of the annular bag and are located at 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 arranged on one side of the detection water tank to complete the air tightness detection 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. A transformer box air tightness detection device according to claim 1, characterized in that: The cleanup agency includes: Two transverse scrapers are symmetrically arranged at the bottom of the sealing mechanism; Two extension platforms are welded and arranged on 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 correspondingly arranged on one side of the two sensing arms, and a reset spring for resetting is sleeved on the outside of the reset rods. Moving areas are opened on both sides of the two transverse scrapers, and a slide seat 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 a changeable size. Each longitudinal scraper is composed of two staggered cleaning plates. Sliding tracks are provided on the two 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 transverse scrapers and the longitudinal scraper to complete the mobile cleaning work.

7. A transformer box air tightness detection device according to claim 6, characterized in that: The cleanup agency also includes: A plurality of No. 1 moving cavities are correspondingly hidden and arranged in a plurality of moving areas; A plurality of 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.

8. A transformer box air tightness detection device according to claim 7, 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 wall of each power member is 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; Two No. 2 moving chambers are symmetrically arranged on both sides of the top of the sealing mechanism. A No. 2 piston member is sealed and slidably installed in each No. 2 moving chamber, and the front end of the No. 2 piston member is transmission connected to the power member, and the tail parts of the two No. 2 moving chambers are connected to the No. 1 moving chambers of the two transverse scrapers through pipelines respectively, and the tail parts of the two No. 2 moving chambers are connected to the two inner support members through pipelines respectively to complete the control.

9. A transformer box air tightness detection device according to claim 8, 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 inner 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 plugging. The partition is arranged in the middle position of the control chamber. The control chamber is divided into a No. 1 space and a No. 2 space by the partition. A No. 1 pipe connected to the No. 1 space is installed on one side of the control chamber. The No. 1 pipe is connected to the tail of the No. 2 movable chamber through a pipeline. A No. 2 pipe connected to the No. 2 space is installed on the sealing cover. The No. 2 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, and the conical through holes are sealed by 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.

10. A method for detecting air tightness of a transformer box, using a transformer box air tightness detection device as claimed in any one of claims 1 to 9, 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: Control the sealing mechanism by the No. 2 cylinder to move downward to complete active sealing of the transformer oil tank, and control the lifting frame and the transformer oil tank by the No. 1 cylinder to move downward to 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 oil tank; Step 4: The cleaning work of the connection between the sealing mechanism and the transformer oil tank is completed by the cleaning mechanism, thereby ensuring the sealing of the connection between the two.

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