CN112595464A - Device and process for detecting sealing performance of welded transformer shell - Google Patents

Device and process for detecting sealing performance of welded transformer shell Download PDF

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Publication number
CN112595464A
CN112595464A CN202011449753.2A CN202011449753A CN112595464A CN 112595464 A CN112595464 A CN 112595464A CN 202011449753 A CN202011449753 A CN 202011449753A CN 112595464 A CN112595464 A CN 112595464A
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China
Prior art keywords
transformer shell
motor
sliding
plate
fixedly connected
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CN202011449753.2A
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Chinese (zh)
Inventor
周策
李崇墨
肖虎
陈闯
沈文俊
陈伟焕
李宇峰
李昊历
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Zhejiang Power Transformer Co ltd
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Zhejiang Power Transformer Co ltd
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Priority to CN202011449753.2A priority Critical patent/CN112595464A/en
Publication of CN112595464A publication Critical patent/CN112595464A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/06Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
    • G01M3/10Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for containers, e.g. radiators

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  • General Physics & Mathematics (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

The invention relates to the technical field of transformers, in particular to a device and a process for detecting sealing performance of a welded transformer shell. The invention has the technical problems of complex operation, biased manual operation and low measurement accuracy. The sealing device is simple to operate, a water measuring method is adopted, the transformer shell is mechanically immersed into water, air is filled into the water for pressurization, and the sealing performance is judged by observing whether bubbles exist.

Description

Device and process for detecting sealing performance of welded transformer shell
Technical Field
The invention relates to the technical field of transformers, in particular to a device and a process for detecting sealing performance of a welded transformer shell.
Background
The transformer transformation principle was first discovered by faraday, but not started to be put into practical use until the 80 s of the nineteenth century. In the competition that a power plant should output both direct current and alternating current, it is one of its advantages to be able to use a transformer for alternating current. The transformer can convert the electric energy into a high-voltage low-current form and then convert the electric energy back, so that the loss of the electric energy in the transmission process is greatly reduced, and the economic transmission distance of the electric energy is further. In the production process of the voltage transformer, after the transformer shell is welded, the sealing performance of the transformer shell needs to be detected, and the situation that rainwater and acidic substances enter the transformer shell to damage the inner wall of the transformer shell due to poor air tightness in the using process is prevented.
The existing device for detecting the sealing performance of the transformer shell is complex in operation and prone to manual operation, a large amount of human resources are required to be consumed for the sealing performance detection of the transformer shell for a large manufacturer, the production cost of the transformer is improved to a certain extent, the manual detection accuracy is not high, and once unqualified products flow into the market, irreparable loss is brought to the manufacturer.
Disclosure of Invention
In order to overcome the current defects, the invention provides a device and a process for detecting the sealing performance of a welded transformer shell.
The technical implementation scheme of the invention is as follows: a sealing performance detection device used after welding of a transformer shell comprises a base, wherein four corners of the top of the base are symmetrically and fixedly connected with second supporting rods, the tops of the four second supporting rods are fixedly connected with a same top plate, the bottom of the top plate is slidably connected with a sliding box, a groove is formed in the top plate, a driving assembly for driving the sliding box to slide is arranged in the groove, four corners of the bottom of the sliding box are symmetrically and fixedly connected with connecting plates, one side, close to each other, of each connecting plate is slidably connected with a second sliding plate, the bottoms of the two second sliding plates are connected with a same fixed plate, a lifting assembly for lifting the fixed plate is arranged in the sliding box, the top of the base is symmetrically and fixedly connected with supporting frames, the same transformer shell is placed on the two supporting frames, and a pressurizing assembly for pressurizing the inside of the, the bottom symmetry fixedly connected with frid of fixed plate, two the bottom symmetry sliding connection of frid has first sliding plate, the even fixedly connected with a plurality of lift bars in bottom of first sliding plate, be provided with on the fixed plate and drive two gliding power components in opposite directions of first sliding plate, the top fixed mounting of base has the water tank, the material of water tank is clear glass, the fixed drying assembly who carries out the drying to transformer housing that is provided with in top of base.
Preferably, drive assembly includes the both sides inner wall symmetry fixed connection's of recess second axis of rotation and first axis of rotation, it is equipped with the sprocket, two all to fix the cover on the outer wall of second axis of rotation and first axis of rotation the sprocket cover is equipped with same chain, one side inner wall that one end of second axis of rotation runs through the recess does not extend to one side of roof, the first motor of one side fixedly connected with of roof, the one end of second axis of rotation and the output shaft fixed connection of first motor, the bar hole has been seted up to the bottom of recess is fixed, fixed cover is equipped with the connecting block on the outer wall of chain, the top outer wall fixed connection that the bar hole and sliding box were passed to the connecting block.
Preferably, the lifting assembly comprises the same rotating roller rotatably connected with the inner walls of the two sides of the sliding box, two first helical gears are fixedly sleeved on the outer wall of the rotating roller, threaded rods are fixedly connected with the inner wall of the bottom of the sliding box in a symmetrical manner, one sides of the two second sliding plates, which are close to each other, are fixedly connected with threaded blocks, the threaded blocks are sleeved on the outer wall of the threaded rods, threads are arranged in the threaded blocks, the threaded blocks are in threaded connection with the threaded rods, the tops of the threaded rods penetrate through the outer wall of the bottom of the sliding box and extend into the sliding box, second helical gears are fixedly sleeved on the outer wall of the threaded rods and are meshed with the first helical gears, a motor installation box is fixedly connected with the outer wall of one side of the sliding box, a second motor is fixedly installed on the inner wall of the bottom of the motor installation box, and one end of the rotating roller penetrates through the, one end of the rotating roller is fixedly connected with an output shaft of the second motor.
Preferably, the pressurizing assembly comprises an air pump fixedly mounted at the top of the fixing plate, an air pipe is fixedly connected to an air outlet of the air pump, one end of the air pipe penetrates through the fixing plate and extends to one side of the bottom of the fixing plate, one end of the air pipe is rotatably connected with a joint, a thread is formed in the joint, the joint is a hollow pipe, and a threaded hole matched with the joint is formed in the top of the transformer shell.
Preferably, the power assembly comprises a rotating plate rotatably connected to the bottom of the fixed plate, the bottom of the rotating plate is symmetrically and rotatably connected with a connecting rod, one end of the connecting rod is rotatably connected to the top of the first sliding plate, a hydraulic cylinder is fixedly mounted at the bottom of the fixed plate, and a piston rod of the hydraulic cylinder is fixedly connected to one side of one of the first sliding plates.
Preferably, the drying assembly comprises first support rods symmetrically and fixedly connected with the top of the base, one side, close to each other, of each of the two first support rods is fixedly connected with the same mounting plate, and a plurality of fans are fixedly mounted on one side of the mounting plate.
Preferably, the outer wall of the joint is sleeved with a sealing ring, and the sealing ring is made of rubber.
Preferably, a controller is fixedly mounted on one side of one of the two second support rods, and the controller is electrically connected with the first motor, the fan, the hydraulic cylinder, the air pump and the second motor.
A sealing performance detection process used after welding of a transformer shell comprises the following steps:
s1, when the sealing performance of the welded transformer shell needs to be detected, water needs to be added into the water tank, the heat dissipation holes and the door seams of the transformer shell are sealed in advance, and the transformer shell is placed on the two support frames after being sealed;
s2, the controller starts the first motor to rotate, the rotation of the first motor drives the second rotating shaft to rotate, the rotation of the second rotating shaft drives the chain wheel to rotate, the chain wheel drives the chain to rotate, the rotation of the chain drives the connecting block to move, the movement of the connecting block drives the sliding box to slide, and when the sliding box slides right above the transformer shell, the rotation of the first motor is closed;
s3, turning on rotation of a second motor through a controller, wherein the rotation of the second motor drives a rotating roller to rotate, the rotation of the rotating roller drives a first helical gear to rotate, the rotation of the first helical gear drives a second helical gear to rotate, the rotation of the second helical gear drives a threaded rod to rotate, the rotation of the threaded rod drives a threaded block to move, the movement of the threaded block drives a second sliding plate to slide, the sliding of the second sliding plate drives a fixed plate to move, the movement of the fixed plate drives a lifting rod to move, and when the lifting rod moves to a position where the bottom of the lifting rod is lower than the bottom of a transformer shell, the rotation of the second motor is turned;
s4, connecting the connector with a threaded hole in the top of the transformer shell in a threaded manner, starting the hydraulic cylinder to work after connection, driving the two first sliding plates to slide oppositely by the extension and contraction of the hydraulic cylinder, driving the lifting rods on the two first sliding plates to move oppositely by the opposite sliding of the two first sliding plates, clamping the transformer shell by the opposite movement of the lifting rods, and closing the hydraulic cylinder after clamping;
s5, starting the second motor again to work to lift the first sliding plate to the initial height, starting the first motor to work to move the transformer shell to the position right above the water tank, descending the transformer shell to the water tank after moving the transformer shell to the position right above the water tank, so that the transformer shell is completely submerged in water, closing the second motor after the transformer shell is submerged in water, starting the air pump to work, continuously inflating and pressurizing the transformer shell by the air pump, and during inflation, detecting personnel observe whether bubbles are generated in the water tank, if bubbles are generated, the sealing performance is poor, and if no bubbles are generated, the sealing performance is good;
and S6, after the detection is finished, the air pump is turned off, the transformer shell is moved out of the water tank and moved to the same horizontal plane with the fan, the fan is turned on, water on the surface of the transformer shell is dried, and the next production step can be carried out after the drying.
1. When the tightness of the welded transformer shell needs to be detected, water needs to be added into the water tank, the heat dissipation holes and the door seams of the transformer shell are sealed in advance, and the transformer shell is placed on the two support frames after the sealing is done;
2. the first motor is started to rotate through the controller, the sliding box is driven to slide by the rotation of the first motor, when the sliding box slides right above the transformer shell, the rotation of the first motor is stopped, the rotation of the second motor is started through the controller, the rotation of the second motor drives the fixed plate to move, the movement of the fixed plate drives the lifting rod to move, and when the lifting rod moves to the position that the bottom of the lifting rod is lower than the bottom of the transformer shell, the second motor is stopped to rotate;
3. the connector is connected with a threaded hole in the top of the transformer shell in a threaded manner, after the connector is connected with the threaded hole, the hydraulic cylinder is started to work, the hydraulic cylinder stretches and retracts to drive the two first sliding plates to slide in opposite directions, the two first sliding plates slide in opposite directions to drive lifting rods on the two first sliding plates to move in opposite directions, the transformer shell is clamped through the opposite movement of the lifting rods, and the hydraulic cylinder is closed after the clamping;
4. the second motor is started again to work to lift the first sliding plate to the original height, then the first motor is started to work to move the transformer shell to the position right above the water tank, the transformer shell is lowered into the water tank after moving to the position right above, the transformer shell is completely immersed into the water, the second motor is closed after the transformer shell is immersed into the water, the air pump is started to work, the air pump continuously inflates and pressurizes the transformer shell, when the air pump inflates, a detector observes whether bubbles are generated in the water tank, if bubbles are generated, the sealing performance is poor, and if no bubbles are generated, the sealing performance is good;
5. and after the detection is finished, the air pump is turned off, the transformer shell is moved out of the water tank and moved to the same horizontal plane with the fan, the fan is turned on to blow water on the surface of the transformer shell, and the next production step can be performed after the blow-drying.
The invention has the beneficial effects that: the method is simple to operate, adopts a water measuring method, mechanically immerses the transformer shell into water, inflates and pressurizes the transformer shell, and observes whether bubbles are generated or not to judge the sealing performance of the transformer shell.
Drawings
Fig. 1 is a front sectional structural view of the present invention.
Fig. 2 is a schematic front view of the present invention.
Fig. 3 is a bottom view of the fixing plate according to the present invention.
Fig. 4 is a schematic front sectional view of the transformer housing according to the present invention.
Fig. 5 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.
Fig. 6 is an enlarged schematic structural view of part B in fig. 1 according to the present invention.
Fig. 7 is a schematic diagram of a three-dimensional structure of a lifting rod of the present invention.
Fig. 8 is a schematic three-dimensional structure diagram of the support frame of the present invention.
In the figure: 1. a base; 2. a support frame; 3. a transformer housing; 4. a first motor; 5. a first support bar; 6. a water tank; 7. a second support bar; 8. a controller; 9. mounting a plate; 10. a fan; 11. a lifting bar; 12. a first sliding plate; 13. a hydraulic cylinder; 14. a groove plate; 15. an air pump; 16. a second sliding plate; 17. a threaded rod; 18. a thread block; 19. a connecting plate; 20. a threaded hole; 21. a rotating roller; 22. connecting blocks; 23. a strip-shaped hole; 24. a slide box; 25. a first helical gear; 26. a second helical gear; 27. a second motor; 28. a motor mounting case; 29. an air tube; 30. a fixing plate; 31. a top plate; 32. a groove; 33. a sprocket; 34. a first rotating shaft; 35. a second rotating shaft; 36. a chain; 37. a rotating plate; 38. a connecting rod; 39. a joint; 40. and (5) sealing rings.
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings.
Examples
As shown in fig. 1-8, a sealing performance detection device for welded transformer housings comprises a base 1, wherein four corners of the top of the base 1 are symmetrically and fixedly connected with second support rods 7, the tops of the four second support rods 7 are fixedly connected with a same top plate 31, the bottom of the top plate 31 is slidably connected with a sliding box 24, a groove 32 is formed in the top plate 31, a driving assembly for driving the sliding box 24 to slide is arranged in the groove 32, four corners of the bottom of the sliding box 24 are symmetrically and fixedly connected with connecting plates 19, one side of the two connecting plates 19, which are close to each other, is slidably connected with a second sliding plate 16, the bottoms of the two second sliding plates 16 are connected with a same fixed plate 30, a lifting assembly for lifting the fixed plate 30 is arranged in the sliding box 24, the tops of the base 1 are symmetrically and fixedly connected with, be provided with on the fixed plate 30 and carry out the pressurization group price that pressurizes in to transformer housing 3, the bottom symmetry fixedly connected with frid 14 of fixed plate 30, the bottom symmetry sliding connection of two frids 14 has first sliding plate 12, a plurality of lifting rods 11 of the even fixedly connected with in bottom of first sliding plate 12, be provided with on the fixed plate 30 and drive two gliding power components in opposite directions of first sliding plate 12, base 1's top fixed mounting has water tank 6, water tank 6's material is clear glass, base 1's top is fixed and is provided with the drying assembly who carries out the drying to transformer housing 3.
In this embodiment, drive assembly includes recess 32's both sides inner wall symmetry fixed connection's second axis of rotation 35 and first axis of rotation 34, it is equipped with sprocket 33 all to fix the cover on the outer wall of second axis of rotation 35 and first axis of rotation 34, two sprocket 33 covers are equipped with same chain 36, one side inner wall that recess 32 was run through to the one end of second axis of rotation 35 does not extend to one side of roof 31, the first motor 4 of one side fixedly connected with of roof 31, the one end of second axis of rotation 35 and first motor 4's output shaft fixed connection, bar hole 23 has been seted up to recess 32's bottom is fixed, it is equipped with connecting block 22 to fix the cover on chain 36's the outer wall, connecting block 22 passes bar hole 23 and sliding box 24's top outer.
In this embodiment, the lifting assembly includes the same rotating roller 21 rotatably connected to the inner walls of the two sides of the sliding box 24, two first helical gears 25 are fixedly sleeved on the outer wall of the rotating roller 21, threaded rods 17 are fixedly connected to the inner wall of the bottom of the sliding box 24 symmetrically, threaded blocks 18 are fixedly connected to the mutually adjacent sides of the two second sliding plates 16, the threaded blocks 18 are sleeved on the outer wall of the threaded rods 17, threads are formed in the threaded blocks 18, the threaded blocks 18 are in threaded connection with the threaded rods 17, the top of the threaded rods 17 penetrates through the outer wall of the bottom of the sliding box 24 and extends into the sliding box 24, second helical gears 26 are fixedly sleeved on the outer wall of the threaded rods 17, the second helical gears 26 are engaged with the first helical gears 25, a motor mounting box 28 is fixedly connected to the outer wall of one side of the sliding box 24, a second motor 27 is fixedly mounted on the inner wall of the bottom of the motor mounting box 28, one end of the rotating, one end of the rotating roller 21 is fixedly connected to an output shaft of the second motor 27.
In this embodiment, the pressurizing assembly includes the top fixed mounting of fixed plate 30 has air pump 15, air pump 15 gas outlet fixedly connected with trachea 29, and the one end of trachea 29 runs through fixed plate 30 and extends to fixed plate 30 bottom one side, and the one end of trachea 29 rotates and is connected with joint 39, has seted up the screw thread on the joint 39, and joint 39 is the hollow tube, and the top of transformer housing 3 is seted up and is connected with screw hole 20 of 39 looks adaptations.
In this embodiment, the power assembly includes a rotating plate 37 rotatably connected to the bottom of the fixed plate 30, a connecting rod 38 is rotatably connected to the bottom of the rotating plate 37 symmetrically, one end of the connecting rod 38 is rotatably connected to the top of the first sliding plate 12, a hydraulic cylinder 13 is fixedly mounted to the bottom of the fixed plate 30, and a piston rod of the hydraulic cylinder 13 is fixedly connected to one side of one of the first sliding plates 12.
In this embodiment, the drying assembly includes first support rods 5 symmetrically and fixedly connected to the top of the base 1, one side of the two first support rods 5 close to each other is fixedly connected to the same mounting plate 9, and one side of the mounting plate 9 is fixedly mounted with a plurality of fans 10.
In this embodiment, the outer wall of the joint 39 is sleeved with a sealing ring 40, and the sealing ring 40 is made of rubber.
In this embodiment, a controller 8 is fixedly mounted on one side of one second support rod 7 of the two second support rods 7, and the controller 8 is electrically connected to the first motor 4, the fan 10, the hydraulic cylinder 13, the air pump 15 and the second motor 27.
A sealing performance detection process used after welding of a transformer shell comprises the following steps:
s1, when the tightness of the welded transformer shell 3 needs to be detected, water needs to be added into the water tank 6, the heat dissipation holes and the door seams of the transformer shell 3 are sealed in advance, and the transformer shell 3 is placed on the two support frames 2 after the sealing is done;
s2, the controller 8 starts the first motor 4 to rotate, the rotation of the first motor 4 drives the second rotating shaft 35 to rotate, the rotation of the second rotating shaft 35 drives the chain wheel 33 to rotate, the rotation of the chain wheel 33 drives the chain 36 to rotate, the rotation of the chain 36 drives the connecting block 22 to move, the movement of the connecting block 22 drives the sliding box 24 to slide, and when the sliding box 24 slides to the position right above the transformer shell 3, the rotation of the first motor 4 is closed;
s3, the controller 8 starts the rotation of the second motor 27, the rotation of the second motor 27 drives the rotation roller 21 to rotate, the rotation of the rotation roller 21 drives the first bevel gear 25 to rotate, the rotation of the first bevel gear 25 drives the second bevel gear 26 to rotate, the rotation of the second bevel gear 26 drives the threaded rod 17 to rotate, the rotation of the threaded rod 17 drives the threaded block 18 to move, the movement of the threaded block 18 drives the second sliding plate 16 to slide, the sliding of the second sliding plate 16 drives the movement of the fixed plate 30, the movement of the fixed plate 30 drives the lifting rod 11 to move, and when the lifting rod 11 moves to the bottom lower than the bottom of the transformer housing 3, the rotation of the second motor 27 is closed;
s4, connecting the connector 39 with the threaded hole 20 on the top of the transformer housing 3 in a threaded manner, starting the operation of the hydraulic cylinder 13 after connection, driving the two first sliding plates 12 to slide oppositely by the extension and contraction of the hydraulic cylinder 13, driving the lifting rods 11 on the two first sliding plates 12 to move oppositely by the opposite sliding of the two first sliding plates 12, realizing the clamping of the transformer housing 3 by the opposite movement of the lifting rods 11, and closing the operation of the hydraulic cylinder 13 after the clamping;
s5, starting the second motor 27 again to work to lift the first sliding plate 12 to the initial height, starting the first motor 4 to work to move the transformer housing 3 to the position right above the water tank 6, descending the transformer housing 3 into the water tank 6 after moving the transformer housing to the position right above the water tank, so that the transformer housing 3 is completely submerged in water, closing the second motor 27 after being submerged in water, starting the air pump 15 to work, continuously inflating and pressurizing the transformer housing 3 by the air pump 15, and when inflating, a detector observes whether bubbles are generated in the water tank 6, if bubbles are generated, the sealing performance is poor, and if no bubbles are generated, the sealing performance is good;
s6, after the detection is finished, the operation of the air pump 15 is closed, the transformer shell 3 is moved out of the water tank 6, the transformer shell 3 is moved to the same horizontal plane with the fan 10, the fan 10 is started to operate, the water on the surface of the transformer shell 3 is dried, and the next production step can be carried out after the drying.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (9)

1. The sealing performance detection device for the welded transformer shell comprises a base (1) and is characterized in that second support rods (7) are symmetrically and fixedly connected to four corners of the top of the base (1), the top of each of the four second support rods (7) is fixedly connected with a same top plate (31), a sliding box (24) is slidably connected to the bottom of each top plate (31), a groove (32) is formed in each top plate (31), a driving assembly for driving each sliding box (24) to slide is arranged in each groove (32), connecting plates (19) are symmetrically and fixedly connected to four corners of the bottom of each sliding box (24), a second sliding plate (16) is slidably connected to one side, close to each other, of the two connecting plates (19), the bottom of each second sliding plate (16) is connected with a same fixing plate (30), and a lifting assembly for lifting the fixing plates (30) is arranged in each sliding box (24), the top of the base (1) is symmetrically and fixedly connected with supporting frames (2), the same transformer shell (3) is arranged on the two supporting frames (2), the fixed plate (30) is provided with a pressurizing group for pressurizing the inside of the transformer shell (3), the bottoms of the fixed plates (30) are symmetrically and fixedly connected with trough plates (14), the bottoms of the two trough plates (14) are symmetrically and slidably connected with first sliding plates (12), the bottom of the first sliding plate (12) is uniformly and fixedly connected with a plurality of lifting rods (11), the fixed plate (30) is provided with a power component which drives the two first sliding plates (12) to slide oppositely, the top of the base (1) is fixedly provided with a water tank (6), the water tank (6) is made of transparent glass, the drying component for drying the transformer shell (3) is fixedly arranged at the top of the base (1).
2. The device for detecting the sealing performance of the welded transformer shell according to claim 1, wherein the driving assembly comprises a second rotating shaft (35) and a first rotating shaft (34) which are symmetrically and fixedly connected with the inner walls of two sides of a groove (32), the outer walls of the second rotating shaft (35) and the first rotating shaft (34) are fixedly sleeved with chain wheels (33), two chain wheels (33) are sleeved with a same chain (36), one end of the second rotating shaft (35) penetrates through the inner wall of one side of the groove (32) and does not extend to one side of the top plate (31), one side of the top plate (31) is fixedly connected with a first motor (4), one end of the second rotating shaft (35) is fixedly connected with the output shaft of the first motor (4), the bottom of the groove (32) is fixedly provided with a strip-shaped hole (23), the outer wall of the chain (36) is fixedly provided with a connecting block (22), the connecting block (22) penetrates through the strip-shaped hole (23) and is fixedly connected with the outer wall of the top of the sliding box (24).
3. The device for detecting the sealing performance of the welded transformer shell according to claim 1, wherein the lifting assembly comprises the same rotating roller (21) rotatably connected with the inner walls of two sides of a sliding box (24), two first bevel gears (25) are fixedly sleeved on the outer wall of the rotating roller (21), threaded rods (17) are symmetrically and fixedly connected with the inner wall of the bottom of the sliding box (24), threaded blocks (18) are fixedly connected with one sides of the two second sliding plates (16) close to each other, the threaded blocks (18) are sleeved on the outer wall of the threaded rods (17), threads are formed in the threaded blocks (18), the threaded blocks (18) are in threaded connection with the threaded rods (17), the top of the threaded rods (17) penetrates through the outer wall of the bottom of the sliding box (24) and extends into the sliding box (24), second bevel gears (26) are fixedly sleeved on the outer wall of the threaded rods (17), second helical gear (26) and first helical gear (25) mesh mutually, one side outer wall fixedly connected with motor install bin (28) of slip case (24), the bottom inner wall fixed mounting of motor install bin (28) has second motor (27), the one end of live-rollers (21) runs through the one side inner wall of slip case (24) and extends to in the motor install bin (28), the one end of live-rollers (21) and the output shaft fixed connection of second motor (27).
4. The device for detecting the sealing performance of the welded transformer shell according to claim 1, wherein the pressurizing assembly comprises an air pump (15) fixedly mounted at the top of a fixing plate (30), an air pipe (29) is fixedly connected to an air outlet of the air pump (15), one end of the air pipe (29) penetrates through the fixing plate (30) and extends to one side of the bottom of the fixing plate (30), one end of the air pipe (29) is rotatably connected with a connector (39), the connector (39) is provided with a thread, the connector (39) is a hollow pipe, and the top of the transformer shell (3) is provided with a threaded hole (20) matched with the connector (39).
5. The device for detecting the sealing performance of the welded transformer shell according to claim 1, wherein the power assembly comprises a rotating plate (37) rotatably connected to the bottom of the fixed plate (30), a connecting rod (38) is rotatably connected to the bottom of the rotating plate (37) symmetrically, one end of the connecting rod (38) is rotatably connected to the top of the first sliding plate (12), a hydraulic cylinder (13) is fixedly mounted at the bottom of the fixed plate (30), and a piston rod of the hydraulic cylinder (13) is fixedly connected to one side of one of the first sliding plates (12).
6. The device for detecting the sealing performance of the welded transformer shell according to claim 1, wherein the drying assembly comprises first support rods (5) which are symmetrically and fixedly connected to the top of the base (1), one side, close to each other, of each of the two first support rods (5) is fixedly connected with a same mounting plate (9), and a plurality of fans (10) are fixedly mounted on one side of the mounting plate (9).
7. The device for detecting the sealing performance of the welded transformer shell according to claim 4, wherein a sealing ring (40) is sleeved on the outer wall of the joint (39), and the sealing ring (40) is made of rubber.
8. The device for detecting the sealing performance of the welded transformer shell according to claim 1, wherein a controller (8) is fixedly mounted on one side of one second supporting rod (7) of the two second supporting rods (7), and the controller (8) is electrically connected with the first motor (4), the fan (10), the hydraulic cylinder (13), the air pump (15) and the second motor (27).
9. The sealing performance detection process for the transformer shell after welding according to any one of claims 1-8, characterized by comprising the following steps:
s1, when the tightness of the welded transformer shell (3) needs to be detected, water needs to be added into the water tank (6), the heat dissipation holes and the door seams of the transformer shell (3) are sealed in advance, and the transformer shell (3) is placed on the two support frames (2) after sealing is done;
s2, the first motor (4) is started to rotate through the controller (8), the first motor (4) rotates to drive the second rotating shaft (35) to rotate, the second rotating shaft (35) rotates to drive the chain wheel (33) to rotate, the chain wheel (33) rotates to drive the chain (36) to rotate, the chain (36) rotates to drive the connecting block (22) to move, the connecting block (22) moves to drive the sliding box (24) to slide, and when the sliding box (24) slides to the position right above the transformer shell (3), the rotation of the first motor (4) is closed;
s3, the rotation of a second motor (27) is started through a controller (8), the rotation of the second motor (27) drives a rotating roller (21) to rotate, the rotation of the rotating roller (21) drives a first bevel gear (25) to rotate, the rotation of the first bevel gear (25) drives a second bevel gear (26) to rotate, the rotation of the second bevel gear (26) drives a threaded rod (17) to rotate, the rotation of the threaded rod (17) drives a threaded block (18) to move, the movement of the threaded block (18) drives a second sliding plate (16) to slide, the sliding of the second sliding plate (16) drives a fixed plate (30) to move, the movement of the fixed plate (30) drives a lifting rod (11) to move, and when the lifting rod (11) moves to the bottom and is lower than the bottom of a transformer shell (3), the rotation of the second motor (27) is closed;
s4, connecting the connector (39) with a threaded hole (20) in the top of the transformer shell (3) in a threaded manner, starting the operation of the hydraulic cylinder (13) after connection, driving the two first sliding plates (12) to slide oppositely by the extension of the hydraulic cylinder (13), driving the lifting rods (11) on the two first sliding plates (12) to move oppositely by the opposite sliding of the two first sliding plates (12), clamping the transformer shell (3) by the opposite movement of the lifting rods (11), and closing the operation of the hydraulic cylinder (13) after clamping;
s5, starting the second motor (27) again to work to lift the first sliding plate (12) to the initial height, starting the first motor (4) to work to move the transformer shell (3) to the position right above the water tank (6), descending the transformer shell (3) into the water tank (6) after moving the transformer shell to the position right above the water tank, enabling the transformer shell (3) to be totally submerged in water, closing the second motor (27) after submerging the transformer shell, and starting the air pump (15) to work, wherein the air pump (15) continuously inflates and pressurizes the transformer shell (3), and when inflating, a detector observes whether bubbles are generated in the water tank (6), and if bubbles are generated, the sealing performance is poor, and if no bubbles are generated, the sealing performance is good;
s6, after the detection is finished, the operation of the air pump (15) is closed, the transformer shell (3) is moved out of the water tank (6), the transformer shell (3) is moved to the same horizontal plane with the fan (10), the fan (10) is started to operate, water on the surface of the transformer shell (3) is dried, and the next production step can be carried out after the drying.
CN202011449753.2A 2020-12-09 2020-12-09 Device and process for detecting sealing performance of welded transformer shell Pending CN112595464A (en)

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Application publication date: 20210402