Intelligent dry-type transformer with protection function

Abstract

The present application relates to the technical field of electrical equipment, and particularly relates to a smart dry-type transformer with a protection function, which comprises a dry-type transformer body, a fixing mechanism, a connecting mechanism and a protective spherical shell. An operator first fixes the fixing mechanism to a connecting screw rod on the dry-type transformer body, and then connects the required cable by using the connecting mechanism. Since the dry-type transformer body may generate local overheating during use, even if the heat source is found, it cannot be processed in time, and long-time overheating may easily induce spontaneous combustion, causing subsequent property loss and other consequences. The heat receiving structure in the fixing mechanism automatically separates the connection at high temperature, effectively protecting the dry-type transformer body and the safety of life and property, has good practicability and economy, and is beneficial to the promotion and use of the equipment.

Description

Technical Field

[0001] This invention relates to the technical field of electrical equipment, and more specifically to an intelligent dry-type transformer with protective functions. Background Technology

[0002] Dry-type transformers are traditional power equipment, widely used in existing power consumption areas due to their good economic efficiency and resistance to lightning strikes.

[0003] Because the high temperature caused by prolonged use of dry-type transformers can easily lead to the sudden stop of the cooling fan, resulting in heat accumulation and damage and leakage caused by vibration, as well as poor contact in some areas, which can cause overheating and spontaneous combustion. At the same time, since the transformer is still energized during spontaneous combustion, it is difficult to use electrical auxiliary equipment and cannot be dealt with effectively in a timely manner. Summary of the Invention

[0004] In order to solve the above-mentioned problems in the existing technology, the present invention aims to provide an intelligent dry-type transformer with protective function that has a simple structure and effectively utilizes a passive heat source for active circuit breaking.

[0005] The technical solution adopted in this invention is: an intelligent dry-type transformer with protective function, comprising...

[0006] The main body of the dry-type transformer is provided with several connecting screws for connecting cables;

[0007] A fixing mechanism is provided on the connecting screw. The fixing mechanism includes a connecting circular plate, a plurality of connecting rods on the outer periphery of the connecting circular plate, threaded fastening rods on the connecting rods, the threaded fastening rods fastening to the outer periphery of the connecting screw, a rotating ring surrounding the plurality of threaded fastening rods, a release element on the connecting circular plate, a connecting mechanism in the middle of the release element, the connecting mechanism being used to connect a cable, the release element being used to assist the threaded fastening rods on the fixing mechanism to disengage from the connecting screw after the rotating ring slides to the outer periphery of the connecting rod; a detachment guide groove is provided on the connecting rod, the detachment guide groove having a T-shaped structure, a guide protrusion is provided on the threaded fastening rod, the guide protrusion being inserted into the detachment guide groove, the insertion direction of the guide protrusion being obliquely closer to the connecting circular plate and away from the fastened connecting screw;

[0008] The detachment component includes a material receiving cylinder, one end of which is connected to the connecting circular plate. Two sets of sliding transverse grooves are provided in the middle of the material receiving cylinder, with the direction of the sliding transverse grooves parallel to the axis of the connecting screw. A tension spring is provided inside the material receiving cylinder, one end of which is connected to the connecting circular plate. A connecting support plate is provided at the end of the tension spring away from the connecting circular plate, and the connecting support plate abuts against the inner cavity of the material receiving cylinder. A fixed connecting rod is provided on the connecting support plate, extending through the sliding transverse groove and fixedly connected to the rotating ring. A connecting anti-detachment plate is provided at the end of the connecting support plate near the connecting screw, and an extension rod is provided on the connecting anti-detachment plate, extending between the two sets of connecting rods. A thrust spring is provided between the connecting anti-detachment plate and the connecting screw.

[0009] In one embodiment, a plurality of the connecting rods are arranged in a circumferential array on the outer side of the connecting circular plate, and the number of the plurality of connecting rods is at least three.

[0010] In one embodiment, the threaded fastening rod is provided with a push auxiliary rod on the outer periphery away from the connecting screw, and the inner cavity of the rotating ring is provided with an auxiliary rod groove, and the push auxiliary rod is slidably connected to the auxiliary rod groove.

[0011] In one embodiment, the outer side of the material receiving cylinder is provided with several leakage holes, and the inner cavity of the material receiving cylinder is provided with hard solid wax that wraps around the tension spring.

[0012] In one embodiment, the connecting mechanism includes a triangular protrusion located on both sides of the end of the extension rod away from the connecting anti-detachment plate. The triangular protrusion has a right-angled triangular structure, with its inclined surface away from the connecting anti-detachment plate. Two sets of fixing fastening plates are provided at the end of the extension rod away from the connecting anti-detachment plate. The fixing fastening plates have an arc-shaped structure. The two sets of fixing fastening plates are interlocked with a gap. Several anti-detachment wedges are provided in the opposing inner cavities of the two sets of fixing fastening plates. Guide wedges are provided on the outer periphery of the fixing fastening plates. A constraint ring is provided on the outer periphery of the two sets of fixing fastening plates. A guide groove is provided in the middle of the constraint ring, and the guide wedges pass through and are slidably connected to the guide groove. A latching rod is provided on the outer periphery of the constraint ring. The latching rod has an L-shaped structure, and its bent end is fastened to the plane of the triangular protrusion away from the fixing fastening plate. Connecting blocks are provided on both sides of the middle of the latching rod. The latching rod is rotatably connected to the connecting blocks, and the connecting blocks are fixedly connected to the constraint ring.

[0013] In one embodiment, the connecting mechanism further includes a rotating wheel. The end of the extension rod away from the connecting anti-detachment plate is provided with a rotating groove. A rotating screw is provided in the rotating groove. The rotating groove is used to supply rotation for the rotating wheel and the rotating screw. One end of the rotating screw is rotatably connected to the extension rod. The rotating wheel is fixedly connected to the middle of the rotating screw. The end of the rotating screw away from the extension rod is provided with a pressing cone. The end of the rotating screw is rotatably connected to the pressing cone. The pressing cone passes through the interlocking cavities of the two sets of fixed fastening plates. A pushing rod is provided on the pressing cone. The rotating screw passes through the pushing rod. The pushing rod abuts against the side of the fixed fastening plate near the extension rod.

[0014] In one embodiment, the guide groove is used to guide the guide wedge block obliquely away from the extension rod and closer to the axis of the rotating screw.

[0015] In one embodiment, a protective spherical shell is provided on the periphery of the fixing mechanism and the connecting mechanism. The protective spherical shell is used to help the fixing mechanism and the connecting mechanism prevent them from contacting other cables after detaching from the connecting screw.

[0016] The beneficial effects of this invention are as follows: This invention is a simple, intelligent dry-type transformer with protective function that effectively utilizes passive heat sources for active circuit breaking. The specific implementation method is as follows:

[0017] The operator first uses the rotating ring to rotate the threaded fastening rod and then the connecting screw. After that, the cable to be connected is passed between the fixed fastening plates. After the locking rod is fastened to the triangular protrusion, the rotating wheel is rotated. This causes the rotating screw to rotate away from the extension rod, which drives the extrusion cone to pass into the middle of the cable. This drives the push rod to push the fixed fastening plate away from the extension rod. Furthermore, the fixed fastening plate is guided by the guide groove on the constraint ring and the guide wedge block, which causes the fixed fastening plate to clamp the cable. The anti-detachment wedge block inside the fixed fastening plate further clamps the cable to prevent it from falling off, thus achieving quick installation.

[0018] After completion, when the dry-type transformer body experiences high-temperature overheating (approximately 100-150°C), the wax in the support cylinder melts. Since the melting point of the wax is much lower than the ignition point of the materials on the transformer, the wax melts before the dry-type transformer body spontaneously combusts. Simultaneously, the relatively small sliding grooves and drain holes on the support cylinder allow the solid wax to still support the connecting support plate even under pressure. Once the solid wax melts and flows out of the sliding grooves or drain holes within the support cylinder, the thrust spring on the connecting support plate loses its support from the solid wax, and the tension... The spring pulls the connecting support plate towards the connecting circular plate. The connecting support plate continues to drive the rotating ring to slide into the outer side of the connecting rod along the guide of the push auxiliary rod. At the same time, the fixed connecting rod between the connecting support plate and the connecting screw pushes the connecting support plate away from the connecting screw and pushes the connecting rod away from the threaded fastening rod. Under the action of the axial movement of the connecting rod, the threaded fastening rod explodes obliquely in all directions and detaches from the connecting screw, realizing the disconnection of the terminal from the dry-type transformer body and completing the active circuit breaking. At the same time, the protective spherical shell can ensure that the fixing mechanism and the connecting mechanism are wrapped in the inner cavity of the protective spherical shell.

[0019] The device has a simple structure and can actively disconnect the circuit in case of transformer abnormalities through a simple installation structure. It simplifies the cable installation process, effectively improves safety, and has good practicality and economy, which is beneficial to the promotion and use of the equipment. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the fixing mechanism of the present invention;

[0024] Figure 4 This is an exploded three-dimensional structural diagram of the fixing mechanism portion of the present invention;

[0025] Figure 5 This is the second partially exploded three-dimensional structural diagram of the fixing mechanism of the present invention;

[0026] Figure 6 This is a three-dimensional structural diagram of the connecting mechanism of the present invention;

[0027] Figure 7 This is a three-dimensional structural diagram of the connecting mechanism of the present invention.

[0028] Figure Descriptions: 1. Dry-type transformer body; 2. Fixing mechanism; 21. Connecting screw; 22. Connecting rod; 221. Disengagement guide groove; 23. Threaded fastening rod; 231. Guide protrusion; 24. Pushing auxiliary rod; 25. Rotating ring; 251. Auxiliary rod slide groove; 26. Connecting circular plate; 27. Thrust spring; 28. Connecting support plate; 281. Fixed connecting rod; 29. ​​Tension spring; 291. Material receiving cylinder; 292. Leakage hole ; 293. Sliding transverse groove; 3. Connecting mechanism; 31. Connecting anti-detachment plate; 311. Extension rod; 312. Triangular protrusion; 313. Rotating groove; 32. Fixed fastening plate; 321. Anti-detachment wedge block; 322. Guide wedge block; 323. Guide groove; 33. Bayonet rod; 331. Connecting block; 34. Constraint ring; 35. Rotating wheel; 351. Rotating screw; 352. Push rod; 353. Extrusion cone; 4. Protective spherical shell. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0031] The following is combined with Figure 1-7 This invention describes a specific embodiment of an intelligent dry-type transformer with protective functions, comprising:

[0032] The dry-type transformer body 1 is existing technology. The attached drawing adopts a simplified drawing method, so it will not be described in detail. The dry-type transformer body 1 is provided with several connecting screws 21 for connecting cables. This is also existing technology and is used to assist in the cable connection between transformers. It is usually a bolt connection.

[0033] Fixing mechanism 2 is mounted on connecting screw 21. Fixing mechanism 2 includes a connecting circular plate 26. Several connecting rods 22 are arranged in a circular array around the periphery of the connecting circular plate 26. The number of connecting rods 22 is at least three, but the attached diagram shows four groups. Each connecting rod 22 has a threaded fastening rod 23 that fastens to the periphery of the connecting screw 21. Advantageously, each connecting rod 22 has a detachment guide groove 221 with a T-shaped structure. The threaded fastening rod 23 has a guide protrusion 231 that inserts into the detachment guide groove 221. The insertion direction of the guide protrusion 231 is oblique. The connecting circular plate 26 is located close to the connecting screw 21 and away from it. Several threaded fastening rods 23 are surrounded by a rotating ring 25, the outer side of which can be polygonal for easy rotation. The connecting circular plate 26 is provided with a release element, and a connecting mechanism 3 is located in the middle of the release element. The connecting mechanism 3 is used to connect cables, and the release element assists the rotating ring 25 in sliding to the outer side of the connecting rod 22 before the threaded fastening rods 23 on the fixing mechanism 2 disengage from the connecting screw 21. Specifically, the release element includes a receiving cylinder 291, one end of which is connected to the connecting circular plate 26. The receiving cylinder 291 has two sets of sliding transverse grooves 293 in its middle, the sliding transverse grooves 293 being parallel to the axis of the connecting screw 21. A tension spring 29 is provided inside the material receiving cylinder 291. One end of the tension spring 29 is connected to a connecting circular plate 26, and the end of the tension spring 29 away from the connecting circular plate 26 is provided with a connecting support plate 28. The connecting support plate 28 abuts against the inner cavity of the material receiving cylinder 291. A fixed connecting rod 281 is provided on the connecting support plate 28. The fixed connecting rod 281 passes through the sliding transverse groove 293 and is fixedly connected to the rotating ring 25. A connecting anti-detachment plate 31 is provided at the end of the connecting support plate 28 near the connecting screw 21. An extension rod 311 is provided on the connecting anti-detachment plate 31. The extension rod 311 passes between the two sets of connecting rods 22. A thrust spring 27 is provided between the connecting anti-detachment plate 31 and the connecting screw 21. Several leakage points are provided on the outer side of the material receiving cylinder 291. Hole 292, the specific number depends on the time situation, the inner cavity of the receiving cylinder 291 is provided with hard solid wax wrapped around the tension spring 29; the solid wax supports the connecting support plate 28 and clamps the connecting anti-detachment plate 31 between the thrust spring 27. Specifically, the hard solid wax is existing technology, such as polyethylene wax, Fischer-Tropsch wax, etc. It mainly utilizes the high temperature solubility of the wax to make the connecting support plate 28 approach the connecting round plate 26, and further make the equipment detach from the connecting screw 21 to achieve this goal. It is beneficial that the threaded fastening rod 23 is provided with a pushing auxiliary rod 24 on the outer side away from the connecting screw 21, and the inner cavity of the rotating ring 25 is provided with an auxiliary rod groove 251, and the pushing auxiliary rod 24 is slidably connected to the auxiliary rod groove 251.

[0034] In practice, the wax melts before the dry-type transformer body 1 spontaneously combusts; simultaneously, the sliding transverse groove 293 and the drain hole 292 on the material receiving cylinder 291 are relatively small, so even if the solid wax is under pressure, it can still provide support for the connecting support plate 28. After the solid wax melts inside the material receiving cylinder 291 and flows out through the sliding transverse groove 293 or the drain hole 292, the thrust spring 27 on the connecting support plate 28 loses the support of the solid wax, and the tension spring 29 pulls the connecting support plate 28 towards the connecting circular plate 26. As the connecting support plate 28 continues to drive the rotating ring 25 to slide into the outer side of the connecting rod 22 along the guide of the push auxiliary rod 24, the fixed connecting rod 281 between the connecting support plate 28 and the connecting screw 21 pushes the connecting support plate 28 away from the connecting screw 21, while simultaneously pushing the connecting rod 22 away from the threaded fastening rod 23. Under the action of the axial movement of the connecting rod 22, the threaded fastening rod 23 explodes obliquely in all directions and detaches from the connecting screw 21, realizing the disconnection of the terminal from the dry-type transformer body 1 and completing the active circuit breaking.

[0035] Beneficially, the connecting mechanism 3 includes triangular protrusions 312, which are located on both sides of the end of the extension rod 311 away from the connecting anti-detachment plate 31. The triangular protrusions 312 have a right-angled triangular structure, with the inclined surface of the triangular protrusions 312 away from the connecting anti-detachment plate 31. Two sets of fixing fastening plates 32 are provided at the end of the extension rod 311 away from the connecting anti-detachment plate 31. The fixing fastening plates 32 have an arc-shaped plate structure. The two sets of fixing fastening plates 32 are interlocked with a gap between them. The relative inner cavities of the two sets of fixing fastening plates 32 are provided with several... The device includes a dry anti-detachment wedge block 321, a guide wedge block 322 on the outer side of the fixing fastening plate 32, and a constraint ring 34 on the outer side of the two sets of fixing fastening plates 32. A guide groove 323 is provided in the middle of the constraint ring 34, through which the guide wedge block 322 slides and connects. A locking rod 33 is provided on the outer side of the constraint ring 34. The locking rod 33 has an L-shaped structure, and its bent end engages with a triangular protrusion 312 on the side of the plane away from the fixing fastening plate 32. Connecting blocks 331 are provided on both sides of the middle of the locking rod 33. The connecting rod 33 is rotatably connected to the connecting block 331, and the connecting block 331 is fixedly connected to the constraint ring 34. Advantageously, the connecting mechanism 3 also includes a rotating wheel 35. The end of the extension rod 311 away from the connecting anti-detachment plate 31 is provided with a rotating groove 313, and a rotating screw 351 is provided within the rotating groove 313. The rotating groove 313 is used to supply rotation to the rotating wheel 35 and the rotating screw 351. One end of the rotating screw 351 is rotatably connected to the extension rod 311, and the rotating wheel 35 is fixedly connected to the middle of the rotating screw 351. 51 has a pressing cone 353 at the end away from the extension rod 311. The end of the rotating screw 351 is rotatably connected to the pressing cone 353. The pressing cone 353 passes into the inner cavity of the two sets of fixed fastening plates 32. The pressing cone 353 is provided with a push rod 352. The rotating screw 351 passes through the push rod 352. The push rod 352 abuts against the side of the fixed fastening plate 32 near the extension rod 311. It is beneficial that the guide groove 323 is used to guide the guide wedge block 322 obliquely away from the extension rod 311 and close to the axis of the rotating screw 351.

[0036] In practice, the cables to be connected are passed between the fixed fastening plates 32, and the locking rod 33 is fastened to the triangular protrusion 312. Then, the rotating wheel 35 is rotated, causing the rotating screw 351 to rotate away from the extension rod 311. This causes the extrusion cone 353 to pass into the middle of the cable, which in turn causes the push rod 352 to push the fixed fastening plate 32 away from the extension rod 311. Furthermore, the fixed fastening plate 32 is guided by the guide groove 323 on the constraint ring 34, which guides the guide wedge block 322, causing the fixed fastening plate 32 to clamp the cable. The anti-detachment wedge block 321 inside the fixed fastening plate 32 further clamps the cable to prevent it from falling off, thus achieving quick installation.

[0037] Beneficially, a protective spherical shell 4 is provided on the outer side of the fixing mechanism 2 and the connecting mechanism 3. The protective spherical shell 4 is used to help the fixing mechanism 2 and the connecting mechanism 3 prevent them from contacting other cables after detaching from the connecting screw 21. The protective spherical shell 4 is made up of two sets of open semicircles, which can achieve the effect of wrapping and protecting.

[0038] Working principle of this invention:

[0039] In the initial state, the operator first uses the rotating ring 25 to rotate the threaded fastening rod 23 to rotate and fasten the connecting screw 21. Then, the cable to be connected is passed between the fixed fastening plates 32, and the bayonet rod 33 is fastened to the triangular protrusion 312. Then, the rotating wheel 35 is rotated, so that the rotating screw 351 rotates away from the extension rod 311. This drives the extrusion cone 353 to pass into the middle of the cable, which drives the push rod 352 to push the fixed fastening plate 32 away from the extension rod 311. Furthermore, the fixed fastening plate 32 is guided by the guide groove 323 on the constraint ring 34 and the guide wedge 322, so that the fixed fastening plate 32 clamps the cable. The anti-detachment wedge 321 inside the fixed fastening plate 32 further clamps the cable to prevent it from falling off, thus achieving quick installation.

[0040] After completion, when the dry-type transformer body 1 experiences high-temperature overheating (approximately 100-150°C), the wax in the support cylinder 291 melts due to the high temperature. Since the melting point of the wax is much lower than the ignition point of the materials on the transformer, the wax will melt before the dry-type transformer body 1 spontaneously combusts. Simultaneously, the sliding groove 293 and drain hole 292 on the support cylinder 291 are relatively small, allowing the solid wax to still provide support for the connecting support plate 28 even under pressure. After the solid wax in the support cylinder 291 melts and flows out through the sliding groove 293 or drain hole 292, the thrust spring 27 on the connecting support plate 28 loses the support of the solid wax, and the tension spring 29 pulls... The moving connecting support plate 28 moves towards the connecting circular plate 26. The connecting support plate 28 continues to drive the rotating ring 25 to slide into the outer side of the connecting rod 22 along the guide of the pushing auxiliary rod 24. At the same time, the fixed connecting rod 281 between the connecting support plate 28 and the connecting screw 21 pushes the connecting support plate 28 away from the connecting screw 21 and pushes the connecting rod 22 away from the threaded fastening rod 23. Under the action of the axial movement of the connecting rod 22, the threaded fastening rod 23 explodes obliquely in all directions and detaches from the connecting screw 21, realizing the disconnection of the terminal from the dry-type transformer body 1 and completing the active circuit breaking. At the same time, the protective spherical shell 4 can ensure that the fixing mechanism 2 and the connecting mechanism 3 are wrapped in the inner cavity of the protective spherical shell 4.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, they should all fall within the protection scope of the present invention.

Claims

1. A smart dry-type transformer with protective functions, characterized in that: include A dry-type transformer body (1) is provided with several connecting screws (21) for connecting cables; A fixing mechanism (2) is provided on the connecting screw (21). The fixing mechanism (2) includes a connecting circular plate (26). A plurality of connecting rods (22) are provided on the outer side of the connecting circular plate (26). A threaded fastening rod (23) is provided on the connecting rod (22). The threaded fastening rod (23) fastens to the outer side of the connecting screw (21). A rotating ring (25) is wrapped around the plurality of threaded fastening rods (23). A release member is provided on the connecting circular plate (26). A connecting mechanism (3) is provided in the middle of the release member. The connecting mechanism (3) is used to connect cables. The release element is used to assist the rotating ring (25) in sliding to the outer side of the connecting rod (22) and then the threaded fastening rod (23) on the fixing mechanism (2) disengages from the fastening connecting screw (21); the connecting rod (22) is provided with a release guide groove (221), the release guide groove (221) has a T-shaped structure, the threaded fastening rod (23) is provided with a guide protrusion (231), the guide protrusion (231) is inserted into the release guide groove (221), and the insertion direction of the guide protrusion (231) is obliquely close to the connecting circular plate (26) and away from the fastened connecting screw (21); The release mechanism includes a receiving cylinder (291), one end of which is connected to the connecting circular plate (26). Two sets of sliding transverse grooves (293) are provided in the middle of the receiving cylinder (291), with the sliding transverse grooves (293) oriented parallel to the axis of the connecting screw (21). A tension spring (29) is provided inside the receiving cylinder (291), one end of which is connected to the connecting circular plate (26). A connecting support plate (28) is provided at the end of the tension spring (29) away from the connecting circular plate (26), and the connecting support plate (28) abuts against the... The inner cavity of the material receiving cylinder (291) is provided with a fixed connecting rod (281) on the connecting support plate (28). The fixed connecting rod (281) passes through the sliding transverse groove (293) and is fixedly connected to the rotating ring (25). A connecting anti-detachment plate (31) is provided at one end of the connecting support plate (28) near the connecting screw (21). An extension rod (311) is provided on the connecting anti-detachment plate (31). The extension rod (311) passes between the two sets of connecting rods (22). A thrust spring (27) is provided between the connecting anti-detachment plate (31) and the connecting screw (21).

2. The intelligent dry-type transformer with protective function according to claim 1, characterized in that: A plurality of the connecting rods (22) are arranged in a circumferential array on the outer side of the connecting circular plate (26), and the number of the plurality of connecting rods (22) is at least three.

3. The intelligent dry-type transformer with protective function according to claim 2, characterized in that: The threaded fastening rod (23) is provided with a push auxiliary rod (24) on the outer side away from the connecting screw (21), and the inner cavity of the rotating ring (25) is provided with an auxiliary rod groove (251). The push auxiliary rod (24) is slidably connected to the auxiliary rod groove (251).

4. The intelligent dry-type transformer with protective function according to claim 1, characterized in that: The outer side of the material receiving cylinder (291) is provided with several leakage holes (292), and the inner cavity of the material receiving cylinder (291) is provided with hard solid wax that wraps around the tension spring (29).

5. The intelligent dry-type transformer with protective function according to claim 1, characterized in that: The connecting mechanism (3) includes a triangular protrusion (312), which is located on both sides of the end of the extension rod (311) away from the connecting anti-detachment plate (31). The triangular protrusion (312) has a right-angled triangular structure, and the inclined surface of the triangular protrusion (312) is away from the connecting anti-detachment plate (31). The end of the extension rod (311) away from the connecting anti-detachment plate (31) is provided with two sets of fixing fastening plates (32). The fixing fastening plates (32) have an arc-shaped plate structure. The two sets of fixing fastening plates (32) are fastened together with a gap. Several anti-detachment wedges (321) are provided in the relative inner cavities of the two sets of fixing fastening plates (32). The outer side of the fixing fastening plates (32) is provided with guides. A constraint ring (34) is provided on the outer side of the wedge block (322) and the two sets of fixed fastening plates (32). A guide groove (323) is provided in the middle of the constraint ring (34). The guide wedge block (322) passes through and is slidably connected to the guide groove (323). A bayonet rod (33) is provided on the outer side of the constraint ring (34). The bayonet rod (33) has an L-shaped structure. The bent end of the bayonet rod (33) is fastened to the side plane of the triangular protrusion (312) away from the fixed fastening plate (32). Connecting blocks (331) are provided on both sides of the middle of the bayonet rod (33). The bayonet rod (33) is rotatably connected to the connecting block (331). The connecting block (331) is fixedly connected to the constraint ring (34).

6. The intelligent dry-type transformer with protective function according to claim 5, characterized in that: The connecting mechanism (3) further includes a rotating wheel (35). The end of the extension rod (311) away from the connecting anti-detachment plate (31) is provided with a rotating groove (313). A rotating screw (351) is provided in the rotating groove (313). The rotating groove (313) is used to supply rotation to the rotating wheel (35) and the rotating screw (351). One end of the rotating screw (351) is rotatably connected to the extension rod (311). The rotating wheel (35) is fixedly connected to the middle of the rotating screw (351). The end of the screw (351) away from the extension rod (311) is provided with a pressing cone (353). The end of the rotating screw (351) is rotatably connected to the pressing cone (353). The pressing cone (353) passes through the interlocking cavity of the two sets of fixed fastening plates (32). The pressing cone (353) is provided with a push rod (352). The rotating screw (351) passes through the push rod (352). The push rod (352) abuts against the side of the fixed fastening plate (32) near the extension rod (311).

7. The intelligent dry-type transformer with protective function according to claim 6, characterized in that: The guide groove (323) is used to guide the guide wedge (322) obliquely away from the extension rod (311) and close to the axis of the rotating screw (351).

8. The intelligent dry-type transformer with protective function according to claim 1, characterized in that: The fixing mechanism (2) and the connecting mechanism (3) are provided with a protective spherical shell (4) on their outer sides. The protective spherical shell (4) is used to help the fixing mechanism (2) and the connecting mechanism (3) prevent them from contacting other cables after detaching from the connecting screw (21).

Images