A pouring type dry-type transformer coil air channel arrangement device

Abstract

The present application relates to the technical field of casting dry-type transformer coil air channel arrangement, and particularly relates to a casting dry-type transformer coil air channel arrangement device, which comprises a wire rack, a spreading component is installed on the wire rack, two outer rotating rings with adjustable spacing are connected to the spreading component, a rear baffle disc is rotatably installed on the wire rack and a linear driving module is fixedly installed on the wire rack, a front baffle disc which can rotate and move is drivingly connected to the linear driving module, a group of arrangement mechanisms which are arranged in a circumferential array are installed between the rear baffle disc and the front baffle disc, and a driving module which is in transmission cooperation with the arrangement mechanisms is installed on the wire rack. The air channel arrangement device can quickly and electrically discharge the formed coil, realize the quick switching of the sealing and ventilation state of the air channel structure during the coil pouring, and also can realize the quick installation and disassembly of the air channel plate during use.

Description

Technical Field

[0001] This invention relates to the field of coil air passage arrangement technology for cast-in-place dry-type transformers, and more particularly to a coil air passage arrangement device for cast-in-place dry-type transformers. Background Technology

[0002] Transformer coil air channels are an important component of transformer design, primarily serving to improve the transformer's heat dissipation efficiency. Cast-resin dry-type transformers typically have axial air channels in their coils. The traditional method for placing these air channels in existing technology involves installing air channel plates during winding, and then removing the plates later to leave the air channels.

[0003] In existing technologies, one method for arranging air duct plates is to directly place the air duct plate and position it using retaining rings and pressure pins. This method is cumbersome during production and cannot accurately position each air duct. Another method is to install positioning flanges above and below the coil, and make openings in the positioning flanges to position the air duct plate. Although this method achieves precise positioning of the air duct, the different sizes of each coil require machining of the corresponding positioning flange each time, resulting in high production resource costs for manufacturers. At the same time, existing air duct arrangement devices are not convenient for quickly and electrically unloading the formed coil and switching between the sealing and ventilation states of the air duct structure during coil casting. Furthermore, existing devices are not convenient for the rapid installation and disassembly of air duct plates. Based on these considerations, we propose an air duct arrangement device for cast-type dry-type transformer coils. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and to propose a casting-type dry-type transformer coil air passage arrangement device.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a coil air passage arrangement device for a cast-in-place dry-type transformer, comprising a wire frame, an expansion member installed on the wire frame, two adjustable-spaced outer rotating rings connected to the expansion member, a rear baffle rotatably mounted on the wire frame and a linear drive module fixedly mounted thereon, a front baffle that can be driven to rotate and move on the linear drive module, a set of arrangement mechanisms arranged in a circular array between the rear baffle and the front baffle, and a drive module that is driven to cooperate with the arrangement mechanism on the wire frame;

[0006] The arrangement mechanism includes an air passage arc seat that slides with the front baffle and a positioning slide that slides with the rear baffle. The bottom surface of the air passage arc seat is provided with an adjustment module connected to two outer rotating rings. The inner wall of the positioning slide is provided with a linkage module that cooperates with the drive module. A feeding roller is rotatably connected to the inner wall of the air passage arc seat. A spiral conveying blade is installed on the feeding roller. Two air passages are opened on the air passage arc seat. A valve cylinder is rotatably connected to the inner wall of each air passage. Two symmetrically arranged air vents are opened on the valve cylinder. The feeding roller and the valve cylinder are both driven by the linkage module.

[0007] Preferably, the expansion component includes a drive motor mounted on the wire frame and two guide rods. An expansion screw is rotatably connected to the inner wall of the wire frame. The output shaft end of the drive motor is fixedly connected to the expansion screw. The expansion screw is symmetrically provided with a positive thread section and a negative thread section. An inner support frame is drivenly mounted on both the positive thread section and the negative thread section. The two outer rings are respectively rotatably sleeved on the two inner support frames. The two inner support frames are slidably connected to the guide rods.

[0008] Preferably, the drive module includes a push base, a gear sleeve rotatably connected to the inner wall of the push base, and an active rotary seat rotatably connected to the wire frame. A set of electric push rods is installed between the wire frame and the push base. A drive motor is installed on the wire frame. The output shaft end of the drive motor is connected to the active rotary seat via a belt. A transmission bevel gear ring is installed on the gear sleeve. A set of connecting slots arranged in a circumferential array is opened on the gear sleeve. A connecting rod is installed on the active rotary seat at the position corresponding to each connecting slot. Each connecting rod is slidably connected to the connecting slot at the corresponding position.

[0009] Preferably, the linkage module includes a square shaft rotatably connected to the rear baffle and a bushing rotatably connected to the inner wall of the positioning slide. The bushing is driven by the square shaft. A passive bevel gear is installed at the bottom end of the bushing. The passive bevel gear is adapted to and connected to a transmission bevel gear ring. A large gear shaft and two small gear shafts are rotatably installed on the inner wall of the positioning slide. A toothed belt is driven on the large gear shaft. Both small gear shafts are driven to and connected to the toothed belt. The large gear shaft is adapted to and connected to the feed roller. The two small gear shafts are adapted to and connected to two valve cylinders respectively.

[0010] Preferably, the axis of the square shaft is perpendicular to the rotation axis of the gear sleeve, and a square groove that is slidably connected to the square shaft is fixedly opened inside the bushing. The cross-sections of the square shaft and the square groove are both regular polygons. A transmission disc is installed at one end of the large gear shaft, the small gear shaft, the feeding roller and the valve cylinder, and the surface of the transmission disc is evenly distributed with friction textures.

[0011] Preferably, the positioning slide has a set of first magnetic grooves on the side opposite to the front baffle, and a first locking post is installed on one side of the air passage arc seat corresponding to the position of each first magnetic groove, and each first locking post is engaged with the first magnetic groove at the corresponding position.

[0012] Preferably, the distance adjustment module includes two card platforms, which are respectively adapted and connected to two outer rotating rings. Each of the two outer rotating rings has a set of second magnetic grooves. Each card platform has a set of second card posts installed on its bottom surface. Each second card post is engaged with the second magnetic groove on the corresponding outer rotating ring. Each of the two card platforms is hinged to the air passage arc seat.

[0013] Preferably, a guide portion is provided on one side of the air passage arc seat and the opposite side of the positioning slide, and a slide groove that is slidably connected to the guide portion is fixedly opened on the front baffle.

[0014] Preferably, the valve cylinder has a hollow structure, and the axes of the feeding roller and the valve cylinder are both parallel to the rotation axis of the gear sleeve.

[0015] Preferably, the linear drive module includes a transmission screw rotatably connected to the wire frame and a motor fixed to the wire frame. The output shaft end of the motor is fixedly connected to the transmission screw. A feeding frame is drivenly connected to the transmission screw. The feeding frame is slidably connected to the wire frame. The front baffle is rotatably connected to the feeding frame through a bearing.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When using this air duct arrangement device, it can quickly and electrically unload the coil after molding and realize the rapid switching between the sealing and ventilation states of the air duct structure during coil casting. At the same time, this device can also realize the rapid installation and disassembly of the air duct plate. Furthermore, this device can meet the winding operation of coils with different inner diameters, thereby effectively improving the versatility of this device.

[0018] 2. When using this invention, the distance between the two outer rotating rings is changed, thereby synchronously changing the distance between a set of air passage arc seats and the expansion screw. By adjusting the distance between the set of air passage arc seats and the expansion screw, the inner diameter of the coil winding of this arrangement device is adjusted, and ultimately this device is suitable for winding coils with different inner diameters.

[0019] 3. In this invention, before the coil is wound, the venting channel on the valve cylinder is sealed by the valve cylinder. After the coil is wound and poured, and when it is necessary to dissipate heat inside the coil, the venting channel is connected by setting the angle of the valve cylinder, thereby enabling internal ventilation and heat dissipation of the wound coil.

[0020] 4. In this invention, when the coil is formed and it is necessary to quickly remove the coil outside the air passage arc seat from the air passage arc seat, the front baffle is fully away from the rear baffle. After the position of the front baffle is adjusted, a set of feeding rollers rotate synchronously. After the feeding rollers rotate, the coil after winding is transported towards the rear baffle through the setting of the spiral conveying blade, thereby finally realizing the electric feeding of the coil outside the air passage arc seat. When it is necessary to separate each air passage arc seat from this device, the positioning slide and the air passage arc seat are connected by a snap-fit ​​structure, and the snap-fit ​​platform and the outer rotating ring are connected by a snap-fit ​​structure, which facilitates the quick separation and disassembly / installation of the air passage arc seat from this device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a casting-type dry-type transformer coil air passage arrangement device according to the present invention;

[0022] Figure 2 For the present invention Figure 1 A structural diagram from another perspective;

[0023] Figure 3 This is a schematic diagram of the structure of the rear bumper and air passage arc seat of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the airway arc seat and guide portion of the present invention;

[0025] Figure 5 For the present invention Figure 4 A schematic diagram of the structure from an upward perspective;

[0026] Figure 6 This is a schematic diagram of the valve cylinder and the venting strip hole of the present invention;

[0027] Figure 7 This is a schematic diagram of the square shaft and the large gear shaft of the present invention;

[0028] Figure 8 This is a schematic diagram of the transmission disc and square shaft of the present invention;

[0029] Figure 9 This is a schematic diagram of the square shaft and electric actuator of the present invention;

[0030] Figure 10 This is an exploded structural diagram of the toothed sleeve and active rotating seat of the present invention.

[0031] 1. Wire frame; 2. Outer rotating ring; 3. Rear baffle; 4. Front baffle; 5. Air passage arc seat; 6. Positioning slide; 7. Feed roller; 8. Spiral conveyor blade; 9. Ventilation valve channel; 10. Valve cylinder; 11. Ventilation strip hole; 12. Drive motor; 13. Guide rod; 14. Expansion screw; 15. Inner support frame; 16. Push seat; 17. Gear sleeve; 18. Active rotating seat; 19. Electric push rod; 20. Drive motor; 21. Connecting rod; 22. Square shaft; 23. Bushing; 24. Large gear shaft; 25. Small gear shaft; 26. Transmission disc; 27. First locking post; 28. Locking platform; 29. ​​First magnetic groove; 30. Second magnetic groove; 31. Second locking post; 32. Support arm; 33. Guide part; 34. Transmission screw; 35. Feed rack. Detailed Implementation

[0032] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0033] like Figures 1-10 The coil air passage arrangement device of the cast-in-place dry transformer shown includes a wire frame 1, an expansion component is installed on the wire frame 1, and two adjustable-pitch outer rings 2 are connected to the expansion component.

[0034] like Figure 3 and Figure 9 As shown, the expansion component includes a drive motor 12 and two guide rods 13 mounted on the wire frame 1. An expansion screw 14 is rotatably connected to the inner wall of the wire frame 1, and the output shaft end of the drive motor 12 is fixedly connected to the expansion screw 14.

[0035] The expansion screw 14 is symmetrically provided with a positive thread section and a negative thread section, and an inner support frame 15 is driven and installed on both the positive thread section and the negative thread section.

[0036] Two outer rotating rings 2 are respectively rotatably sleeved on two inner support frames 15, and both inner support frames 15 are slidably connected to the guide rod 13;

[0037] By setting the positive thread section and the negative thread section, the relative distance between the two inner support frames 15 can be quickly changed. By changing the relative distance between the two inner support frames 15, the distance between the two outer rings 2 can be changed.

[0038] By rotating the outer ring 2 on the inner support frame 15, the two outer rings 2 can rotate in response when the fixed wire plate and the moving wire plate are winding the coil.

[0039] A rear baffle 3 is rotatably mounted on the wire frame 1 and a linear drive module is fixedly mounted thereon.

[0040] The linear drive module is connected to a front baffle 4 that can be driven to rotate and move.

[0041] like Figure 1 , Figure 2 and Figure 3 As shown, the linear drive module includes a transmission screw 34 rotatably connected to the wire frame 1 and a motor fixed to the wire frame 1. The output shaft end of the motor is fixedly connected to the transmission screw 34. A feeding frame 35 is drivenly connected to the transmission screw 34. The feeding frame 35 is slidably connected to the wire frame 1. The front baffle 4 is rotatably connected to the feeding frame 35 through a bearing.

[0042] When it is necessary to move the wound coil out through the outside of the air passage arc seat 5, the motor cylinder first drives the transmission screw 34 so that the front baffle 4 is fully away from the rear baffle 3. After the rear baffle 3 is fully away from the front baffle 4, it is then convenient for the wound coil to be quickly moved out of the air passage arc seat 5.

[0043] A set of arrangement mechanisms arranged in a circular array are installed between the rear gear plate 3 and the front gear plate 4, and a drive module that is in transmission cooperation with the arrangement mechanism is installed on the wire frame 1.

[0044] The arrangement mechanism includes an air passage arc seat 5 that slides with the front baffle 4 and a positioning slide 6 that slides with the rear baffle 3. The bottom surface of the air passage arc seat 5 is provided with an adjustment module that is connected to two outer rotating rings 2.

[0045] like Figures 1-5 As shown, the distance adjustment module includes two card platforms 28, which are respectively adapted and connected to two outer rotating rings 2. Each of the two outer rotating rings 2 has a set of second magnetic grooves 30. Each card platform 28 has a set of second card posts 31 installed on its bottom surface. Each second card post 31 is engaged with the second magnetic groove 30 on the corresponding outer rotating ring 2. Each of the two card platforms 28 and the air passage arc seat 5 is hinged with a support arm 32.

[0046] The magnetic attraction and engagement between the card platform 28 and the outer rotating ring 2 are achieved by setting the second magnetic groove 30 and the second card post 31.

[0047] In use, by changing the distance between the two outer rotating rings 2, the distance between a set of air passage arc seats 5 and the expansion screw 14 is changed synchronously. By adjusting the distance between a set of air passage arc seats 5 and the expansion screw 14, the inner diameter of the coil winding of this arrangement device is adjusted, and finally this device is suitable for winding coils with different inner diameters.

[0048] The inner wall of the positioning slide 6 is provided with a linkage module that cooperates with the drive module. The inner wall of the air passage arc seat 5 is rotatably connected to the feeding roller 7, and the feeding roller 7 is equipped with a spiral conveying blade 8.

[0049] The spiral conveyor blade 8 is made of silicone.

[0050] When the coil is wound and it is necessary to quickly remove the coil outside the air passage arc seat 5 from the air passage arc seat 5, the front baffle 4 moves away from the rear baffle 3. After the position of the front baffle 4 is adjusted, a set of feeding rollers 7 rotate synchronously. After the feeding rollers 7 rotate, the coil after winding is conveyed towards the rear baffle 3 through the setting of the spiral conveying blades 8, thereby finally realizing the electric feeding of the coil outside the air passage arc seat 5.

[0051] Two ventilation valve channels 9 are provided on the air passage arc seat 5;

[0052] The top and bottom of the vent valve channel 9 are both open;

[0053] A guide portion 33 is provided on one side of the positioning slide 6 opposite to the air passage arc seat 5, and a slide groove that is slidably connected to the guide portion 33 is fixedly opened on the front baffle 4.

[0054] Each venting valve channel 9 has a valve cylinder 10 rotatably connected to its inner wall. The valve cylinder 10 has two symmetrically arranged venting strip holes 11 and is a hollow structure.

[0055] Both the feeding roller 7 and the valve cylinder 10 are driven by a linkage module.

[0056] The drive module includes a push base 16, a gear sleeve 17 rotatably connected to the inner wall of the push base 16, and an active rotary seat 18 rotatably connected to the wire frame 1. A set of electric push rods 19 are installed between the wire frame 1 and the push base 16.

[0057] A drive motor 20 is installed on the wire frame 1. The output shaft of the drive motor 20 is connected to the active rotating seat 18 via a belt. A transmission bevel gear ring is installed on the gear sleeve 17. A set of connecting slots arranged in a circular array are opened on the gear sleeve 17. A connecting rod 21 is installed on the active rotating seat 18 at the position corresponding to each connecting slot. Each connecting rod 21 is slidably connected to the connecting slot at the corresponding position.

[0058] The linkage module includes a square shaft 22 rotatably connected to the rear baffle 3 and a bushing 23 rotatably connected to the inner wall of the positioning slide 6. The bushing 23 is driven by the square shaft 22, and the axis of the square shaft 22 is perpendicular to the rotation axis of the gear sleeve 17.

[0059] The sleeve 23 has a square groove inside that is slidably connected to the square shaft 22. Both the square shaft 22 and the square groove have regular polygonal cross sections.

[0060] The bottom end of the bushing 23 is equipped with a passive bevel gear, which is adapted to and connected to the transmission bevel gear ring.

[0061] When the front baffle 4 and the rear baffle 3 are in a rotating state or the coil is in a winding state, the distance between the push base 16 and the wire frame 1 is adjusted by setting the electric push rod 19, and the transmission bevel gear ring is eventually moved away from the driven bevel gear. When the driven bevel gear ring is moved away from the driven bevel gear, the square shaft 22 loses its transmission function.

[0062] When it is necessary to feed the coil or change the angle of the valve cylinder 10, the electric push rod 19 is set so that the drive bevel gear ring and the passive bevel gear are meshed and connected as one unit. After the drive bevel gear ring and the passive bevel gear are meshed and connected as one unit, the feeding roller 7 is driven and the angle of the valve cylinder 10 is changed.

[0063] The inner wall of the positioning slide 6 is rotatably mounted with a large gear shaft 24 and two small gear shafts 25. A toothed belt is driven on the large gear shaft 24, and the two small gear shafts 25 are both connected to the toothed belt for transmission.

[0064] The large gear shaft 24 is adapted to be connected to the feed roller 7, and the two small gear shafts 25 are adapted to be connected to the two valve cylinders 10 respectively.

[0065] One end of the large gear shaft 24, the small gear shaft 25, the feeding roller 7 and the valve cylinder 10 is equipped with a transmission disc 26, and the surface of the transmission disc 26 is evenly covered with friction patterns.

[0066] The axes of the feed roller 7 and the valve cylinder 10 are both parallel to the rotation axis of the toothed sleeve 17.

[0067] When the positioning slide 6 and the air passage arc seat 5 are engaged and magnetically attracted to form an integral unit, the feeding roller 7 and the large gear shaft 24 are connected and attached to each other in a driving manner, and the two valve cylinders 10 are connected and attached to the two small gear shafts 25 in a driving manner respectively.

[0068] The positioning slide 6 has a set of first magnetic grooves 29 on the side opposite to the front baffle 4. The air passage arc seat 5 has a first locking post 27 installed on one side and corresponding to the position of each first magnetic groove 29. Each first locking post 27 is engaged with the first magnetic groove 29 at the corresponding position.

[0069] The working principle of this invention is as follows: Before the coil is wound, the air passage arc seat 5 is arranged between the front baffle 4 and the rear baffle 3. By setting the expansion screw 14, the distance between a set of air passage arc seats 5 and the expansion screw 14 is adjusted synchronously, and the inner diameter of the coil is finally adjusted. Before the coil is wound, the vent valve passage 9 on the valve cylinder 10 is sealed by the valve cylinder 10. After the coil is wound and poured, and when internal heat dissipation of the coil is required, the angle of the valve cylinder 10 is set so that the vent valve passage 9 is in a connected state, thereby enabling internal ventilation and heat dissipation of the wound coil. When the coil is formed and the air passage arc seat 5 needs to be removed... When the outer coil is quickly moved out of the air passage arc seat 5, the front baffle 4 moves away from the rear baffle 3. After the position of the front baffle 4 is adjusted, a set of feeding rollers 7 rotate synchronously. After the feeding rollers 7 rotate, the coil after winding is conveyed towards the rear baffle 3 by the setting of the spiral conveying blade 8, and finally the electric feeding of the outer coil of the air passage arc seat 5 is realized. When it is necessary to separate each air passage arc seat 5 from this device, the positioning slide 6 and the air passage arc seat 5 are connected by a snap-fit ​​structure, and the snap-fit ​​platform 28 and the outer rotating ring 2 are connected by a snap-fit ​​structure, which facilitates the quick separation and disassembly / installation of the air passage arc seat 5 from this device.

[0070] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A coil air passage arrangement device for a cast-in-place dry-type transformer, comprising a coil frame (1), characterized in that: The wire frame (1) is equipped with an expansion component, and the expansion component is connected to two adjustable-spacing outer rotating rings (2). The wire frame (1) is rotatably mounted with a rear baffle (3) and a linear drive module is fixedly mounted thereon. The linear drive module is connected to a front baffle (4) that can be driven to rotate and move. A set of arrangement mechanisms arranged in a circular array is installed between the rear baffle (3) and the front baffle (4). The wire frame (1) is equipped with a drive module that is in transmission cooperation with the arrangement mechanism. The arrangement mechanism includes an air passage arc seat (5) that slides with the front baffle (4) and a positioning slide (6) that slides with the rear baffle (3). The bottom surface of the air passage arc seat (5) is provided with an adjustment module connected to two outer rotating rings (2). The inner wall of the positioning slide (6) is provided with a linkage module that cooperates with the drive module. The inner wall of the air passage arc seat (5) is rotatably connected to a feeding roller (7). The feeding roller (7) is equipped with a spiral conveying blade (8). The air passage arc seat (5) has two ventilation valve channels (9). The inner wall of each ventilation valve channel (9) is rotatably connected to a valve cylinder (10). The valve cylinder (10) has two symmetrically arranged ventilation strip holes (11). The feeding roller (7) and the valve cylinder (10) are both driven by the linkage module. The distance adjustment module includes two card platforms (28), which are respectively adapted to and connected to two outer rotating rings (2). Each of the two outer rotating rings (2) has a set of second magnetic grooves (30). Each card platform (28) has a set of second card posts (31) installed on its bottom surface. Each second card post (31) is engaged with the second magnetic groove (30) on the corresponding outer rotating ring (2). Each of the two card platforms (28) is hinged to the airway arc seat (5) with a support arm (32).

2. The coil air passage arrangement device for a cast-in-place dry-type transformer according to claim 1, characterized in that: The expansion component includes a drive motor (12) and two guide rods (13) mounted on the wire frame (1). An expansion screw (14) is rotatably connected to the inner wall of the wire frame (1). The output shaft end of the drive motor (12) is fixedly connected to the expansion screw (14). The expansion screw (14) is symmetrically provided with a positive thread section and a negative thread section. An inner support frame (15) is driven and installed on both the positive thread section and the negative thread section. The two outer rings (2) are respectively rotatably sleeved on the two inner support frames (15). The two inner support frames (15) are slidably connected to the guide rods (13).

3. The coil air passage arrangement device for a cast-in-place dry-type transformer according to claim 1, characterized in that: The drive module includes a push base (16), a gear sleeve (17) rotatably connected to the inner wall of the push base (16), and an active rotating seat (18) rotatably connected to the wire frame (1). A set of electric push rods (19) are installed between the wire frame (1) and the push base (16). A drive motor (20) is installed on the wire frame (1). The output shaft end of the drive motor (20) is connected to the active rotating seat (18) via a belt. A transmission bevel gear ring is installed on the gear sleeve (17). A set of connecting slots arranged in a circumferential array is opened on the gear sleeve (17). A connecting rod (21) is installed on the active rotating seat (18) at the position corresponding to each connecting slot. Each connecting rod (21) is slidably connected to the connecting slot at the corresponding position.

4. The coil air passage arrangement device for a cast-in-place dry-type transformer according to claim 3, characterized in that: The linkage module includes a square shaft (22) rotatably connected to the rear baffle (3) and a bushing (23) rotatably connected to the inner wall of the positioning slide (6). The bushing (23) is driven by the square shaft (22). A passive bevel tooth is installed at the bottom end of the bushing (23). The passive bevel tooth is adapted to be connected to the transmission bevel tooth ring. A large gear shaft (24) and two small gear shafts (25) are rotatably installed on the inner wall of the positioning slide (6). A toothed belt is driven on the large gear shaft (24). The two small gear shafts (25) are driven to be connected to the toothed belt. The large gear shaft (24) is adapted to be connected to the feed roller (7). The two small gear shafts (25) are adapted to be connected to the two valve cylinders (10).

5. The coil air passage arrangement device for a cast-in-place dry-type transformer according to claim 4, characterized in that: The axis of the square shaft (22) is perpendicular to the rotation axis of the gear sleeve (17). The inside of the bushing (23) is fixedly provided with a square groove that is slidably connected to the square shaft (22). The cross-sections of the square shaft (22) and the square groove are both regular polygons. One end of the large gear shaft (24), the small gear shaft (25), the feed roller (7) and the valve cylinder (10) are all equipped with a transmission disc (26). The surface of the transmission disc (26) is evenly distributed with friction patterns.

6. The coil air passage arrangement device for a cast-in-place dry-type transformer according to claim 1, characterized in that: The positioning slide (6) has a set of first magnetic grooves (29) on one side opposite to the front baffle (4). The air passage arc seat (5) has a first locking post (27) installed on one side and at the position corresponding to each first magnetic groove (29). Each first locking post (27) is engaged with the first magnetic groove (29) at the corresponding position.

7. The coil air passage arrangement device for a cast-in-place dry-type transformer according to claim 1, characterized in that: The airway arc seat (5) is provided with a guide part (33) on one side of the opposite positioning slide (6), and the front baffle (4) is fixedly provided with a slide groove that is slidably connected to the guide part (33).

8. The coil air passage arrangement device for a cast-in-place dry-type transformer according to claim 3, characterized in that: The valve cylinder (10) has a hollow structure, and the axes of the feed roller (7) and the valve cylinder (10) are parallel to the rotation axis of the toothed sleeve (17).

9. The coil air passage arrangement device for a cast-in-place dry-type transformer according to claim 1, characterized in that: The linear drive module includes a transmission screw (34) rotatably connected to the wire frame (1) and a motor fixed to the wire frame (1). The output shaft end of the motor is fixedly connected to the transmission screw (34). A feed rack (35) is connected to the transmission screw (34). The feed rack (35) is slidably connected to the wire frame (1). The front baffle (4) is rotatably connected to the feed rack (35) through a bearing.

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