A composite insulation support limiting reactor winding fixing structure

Abstract

The present application relates to the technical field of electric reactors, and particularly relates to a composite insulation supporting and limiting electric reactor winding fixing structure, which comprises a plurality of groups of insulation struts that are uniformly distributed in a circumferential direction and used for supporting and limiting the winding, each group of insulation struts has a plurality of insulation struts and is equidistantly distributed along a radial direction of the winding, a wire slot one for accommodating the winding is formed on the insulation struts, and a locking assembly for locking two adjacent insulation struts is mounted on the upper and lower ends of the insulation struts. After the winding is installed, the locking of the upper and lower fixing rings by the tensioning mechanism is released, and then the fixing rings and the star arm are disassembled. Since the two adjacent insulation struts are locked together, the winding will not be loosened. The winding is separately subjected to impregnation treatment, the fixing rings and the star arm are not attached with glue, the glue on the star arm does not need to be removed additionally, the glue treatment process is simplified, and the abnormal conditions of the surface paint adhesion force of the star arm being reduced and the star arm being heated are solved.

Description

Technical Field

[0001] This invention relates to the field of reactor technology, specifically to a reactor winding fixing structure with composite insulation support and limiting. Background Technology

[0002] As an important reactive power compensation and current limiting device in the power system, dry-type air-core reactors are widely used in power transmission and distribution, and new energy grid connection due to their advantages such as low noise, good insulation performance, and convenient maintenance. The windings of dry-type air-core reactors are the core working components, and the support, positioning, and clamping structure of the windings directly determines the reliability of the reactor operation.

[0003] To reduce insulation usage, lower product costs, and enhance market competitiveness, lightweight reactors with no or minimal insulation suitable for long-term stable outdoor operation have emerged. To improve the waterproofness of these reactors with no or minimal insulation, impregnation is usually required. By wrapping a layer of fiberglass cloth around the outside of the windings and applying adhesive through vacuum impregnation, the fiberglass cloth can achieve a waterproof effect.

[0004] However, in existing processes, because traditional star frame and star arm components cannot be disassembled during the winding impregnation process, the star arms are immersed in the adhesive along with the windings, resulting in a large amount of epoxy resin adhering to their surfaces. Subsequent manual grinding and cleaning of the residual adhesive on the star arms and fixing rings is required, a cumbersome process with high production time. If the residual adhesive is not thoroughly cleaned, the adhesion of the paint coating on the star arm surface will decrease. When the reactor is energized, the residual adhesive area is prone to localized heating and insulation degradation, which can lead to equipment failure in severe cases. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a composite insulation support and limiting reactor winding fixing structure, comprising several sets of circumferentially evenly distributed insulating support bars for supporting and limiting the winding. Each set of insulating support bars consists of several bars and is equidistantly distributed along the radial direction of the winding. Each insulating support bar has a groove for accommodating the winding, and locking components for locking adjacent insulating support bars are installed at both the upper and lower ends of each insulating support bar.

[0006] The star carrier mechanism includes fixed rings disposed on the upper and lower sides of the winding, and a plurality of star arms are evenly installed circumferentially on the outer ring wall of the fixed rings.

[0007] A connecting mechanism, installed on the star arm, is used to lock the insulating support bar and the star arm.

[0008] The tensioning mechanism is installed between the upper and lower fixed rings and is used to drive the upper and lower fixed rings to move towards each other and lock them together.

[0009] When fixing the winding, the insulating support strips are assembled to the star arm one by one from the inside out, so that the winding is wound layer by layer on each insulating support strip. The two adjacent insulating support strips are locked together by the locking assembly, so that the insulating support strips clamp the winding. When impregnation is required, the locking mechanism on the upper and lower fixing rings is released and the star arm is removed.

[0010] In one possible implementation, the locking assembly includes a fixed locking block fixedly connected to the left side of the insulating support bar and an insertion hole opened on the right side of the insulating support bar. The bottom of the fixed locking block is provided with a slot. The fixed locking block is at the same height as the insertion hole and can be inserted into it. A movable locking block located at the bottom of the insertion hole is slidably installed inside the insulating support bar. A return spring is fixedly connected between the bottom of the movable locking block and the inner wall of the insulating support bar. A wedge block is slidably installed inside the insulating support bar. The inclined surface at the right end of the wedge block slides into contact with the left side of the movable locking block. The inclined surface at the right end of the wedge block is inclined to the upper right.

[0011] In one possible implementation, the insulating support strip has mating grooves at both its upper and lower ends, the star arm is inserted into the corresponding mating groove, the star arm is fixedly connected with a stop bar for blocking the insulating support strip, and a reinforcing rib is connected between two adjacent star arms.

[0012] In one possible implementation, the tensioning mechanism includes a pull rod that slides through two upper and lower fixing rings, with nuts threaded to both ends of the pull rod, and the two fixing rings located between the two nuts.

[0013] In one possible implementation, the connecting mechanism includes mounting holes 1 at the upper and lower ends of the insulating support bar and located on the front and rear sides of the corresponding docking groove. The star arm has a plurality of mounting holes 2 evenly distributed along its length. When the star arm is inserted into the docking groove, the mounting holes 1 and the corresponding mounting holes 2 are coaxial. Fixing bolts are inserted into both the mounting holes 1 and the mounting holes 2.

[0014] In one possible implementation, the connecting mechanism includes limiting grooves 1 formed at the upper and lower ends of the insulating support bar, and several limiting grooves 2 equally distributed along the length direction of the star arm, the limiting grooves 2 being L-shaped. A slider located on the side of the stop bar near the center of the fixed ring is slidably mounted on the star arm. A limiting plate is rotatably mounted on the left side of the slider. Several buckles equally distributed on the left and right sides are fixedly connected to the bottom of the limiting plate. The buckles engage with the corresponding limiting grooves 1 and 2. A locking assembly for driving the slider to move along the length direction of the star arm is mounted on the fixed ring.

[0015] In one possible implementation, the locking assembly includes a turntable rotatably mounted on opposite sides of two fixed rings. The turntable has a plurality of circumferentially evenly distributed arc-shaped grooves. A linkage rod is fixedly connected to the side of the slider near the center of the fixed ring. A sliding pin is slidably installed inside the arc-shaped grooves. The end of the linkage rod near the center of the fixed ring is slidably connected to the sliding pin. A threaded sleeve is slidably installed on the inner ring wall of the fixed ring. The threaded sleeve is threadedly connected to the turntable. The nut is located outside the threaded sleeve.

[0016] In one possible implementation, the locking assembly further includes a limiting block fixedly connected to the outer ring wall of the threaded sleeve. The limiting block is slidably connected to the fixed ring. The fixed ring has a groove, and a second return spring is disposed inside the groove. One end of the second return spring is connected to the turntable, and the other end is connected to the inner wall of the groove.

[0017] In one possible implementation, a plurality of insulating spacers are also included, the insulating spacers being installed between two adjacent turns of winding, the insulating spacers having grooves for accommodating the windings, the insulating spacers being distributed between the included angles of two adjacent star arms, and the windings being wrapped with fiberglass cloth.

[0018] The beneficial effects of this invention are as follows: 1. After the winding is installed, the locking mechanism of the upper and lower fixing rings is released, and then the fixing rings and star arms are disassembled. Since the adjacent insulating support bars are already locked together, the winding will not loosen. At the same time, the rigidity of the winding itself and the support of the insulating support bars are used to keep the winding in a cylindrical shape, which meets the needs of subsequent vacuum impregnation treatment of the winding. After the impregnation process is completed, the star arms are fixed to the upper and lower ends of the insulating support bars, and then the tensioning mechanism is used to lock the upper and lower fixing rings, which again supports and limits the winding, meets the structural strength requirements of the reactor during long-term use, avoids glue adhering to the fixing rings and star arms, eliminates the need to remove glue from the star arms, simplifies the glue treatment process, and solves the abnormal situation of reduced paint adhesion and heat generation on the surface of the star arms.

[0019] 2. When fixing the insulating support strip and the star arm, the limiting plate is rotated to a horizontal position, so that the buckle is inserted into the limiting groove 2 and the limiting groove 1 from above. Then, the locking assembly pulls the slider towards the center of the fixing ring, so that the buckle slides into the horizontal section of the limiting groove 2. Because there is a stop strip on the inner side and a buckle on the outer side, the insulating support strip cannot move left or right, thus locking the insulating support strip and the star arm. By rotating the limiting plate, several buckles fall into the limiting groove 2 at the same time to lock, which greatly shortens the time and significantly improves the installation efficiency. Attached Figure Description

[0020] Figure 1This is a three-dimensional structural schematic diagram of the first embodiment of the present invention.

[0021] Figure 2 This is a three-dimensional structural schematic diagram of the insulating support strip of the present invention.

[0022] Figure 3 This is a schematic diagram of the planar structure of the locking component of the present invention.

[0023] Figure 4 This is a three-dimensional structural diagram of the star frame mechanism of the present invention.

[0024] Figure 5 This is a three-dimensional structural schematic diagram of the second embodiment of the present invention.

[0025] Figure 6 This is a three-dimensional structural schematic diagram of the limiting groove of the present invention.

[0026] Figure 7 This is a three-dimensional structural diagram of the buckle of the present invention.

[0027] Figure 8 This is a three-dimensional structural diagram of the locking component of the present invention.

[0028] Figure 9 This is a partial view of the turntable of the present invention.

[0029] Figure 10 This is a three-dimensional structural schematic diagram of the insulating spacer of the present invention.

[0030] In the diagram: 1. Insulating support bar; 11. Wire groove one; 12. Locking assembly; 121. Fixed locking block; 122. Insertion hole; 123. Moving locking block; 124. Return spring one; 125. Wedge block; 13. Connecting groove; 2. Star frame mechanism; 21. Fixing ring; 211. Groove; 22. Star arm; 23. Stop bar; 24. Reinforcing rib; 3. Connecting mechanism; 31. Mounting hole one; 32. Mounting hole two; 33. Fixing bolt; 34. Limiting groove one; 35. Limiting groove two; 36. Slider; 37. Limiting plate; 38. Buckle; 39. Locking assembly; 391. Turntable; 392. Arc groove; 393. Linkage rod; 394. Sliding pin; 395. Threaded sleeve; 396. Limiting block; 397. Return spring two; 4. Tensioning mechanism; 41. Pull rod; 42. Nut; 5. Winding; 6. Fiberglass cloth; 7. Insulating strip; 71. Wire groove two. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Please see Figure 1-10 A composite insulation support and limiting reactor winding fixing structure includes several sets of insulating support bars 1 evenly distributed circumferentially for supporting and limiting the winding 5. Each set of insulating support bars 1 has several bars and is equidistantly distributed along the radial direction of the winding 5. The insulating support bars 1 are provided with wire grooves 11 for accommodating the winding 5. Locking components 12 for locking two adjacent insulating support bars 1 are installed at both the upper and lower ends of the insulating support bars 1.

[0033] The star frame mechanism 2 includes a fixing ring 21 disposed on the upper and lower sides of the winding 5, and a number of star arms 22 are evenly installed on the outer ring wall of the fixing ring 21 in the circumferential direction.

[0034] The connecting mechanism 3 is installed on the star arm 22 to lock the insulating support bar 1 and the star arm 22.

[0035] The tensioning mechanism 4 is installed between the upper and lower fixed rings 21 and is used to drive the upper and lower fixed rings 21 to move towards each other and lock them.

[0036] When fixing the winding 5, the insulating support strips 1 are assembled to the star arm 22 one by one from the inside to the outside, so that the winding 5 is wound on each insulating support strip 1 layer by layer. The two adjacent insulating support strips 1 are locked together by the locking component 12, so that the insulating support strips 1 clamp the winding 5. When it is time to impregnate with glue, the locking of the tensioning mechanism 4 on the upper and lower fixing rings 21 is released and the star arm 22 is removed.

[0037] In practical use, when installing the winding 5, the insulating support strips 1 need to be assembled onto the star frame mechanism 2 one by one from the inside out. First, the innermost insulating support strip 1 is installed between the upper and lower star arms 22. The upper and lower fixing rings 21 are driven to move towards each other by the tensioning mechanism 4 to fix the position of the upper and lower fixing rings 21, which facilitates the installation of the insulating support strip 1 and the winding 5. Then, the winding 5 is wound and installed into the wire groove 11 on the insulating support strip 1. After the innermost winding 5 is installed, the next insulating support strip 1 is installed between the upper and lower fixing rings 21. The two adjacent insulating support strips 1 are locked together by the locking component 12, so that the outer insulating support strip 1 presses and fixes the already wound and installed winding 5. Then, the second layer of winding 5 is wound and installed, and so on to complete the assembly and installation of all the insulating support strips 1.

[0038] After installing the winding 5, release the tensioning mechanism 4 from locking the upper and lower fixing rings 21, and then remove the fixing rings 21 and the star arm 22. Since the adjacent insulating support bars 1 are already locked together, the winding 5 will not loosen. At the same time, the rigidity of the winding 5 itself and the support of the insulating support bars 1 are used to keep the winding 5 in a cylindrical shape, which meets the needs of subsequent vacuum impregnation treatment of the winding 5. After the impregnation process is completed, fix the star arm 22 to the upper and lower ends of the insulating support bars 1, and then use the tensioning mechanism 4 to lock the upper and lower fixing rings 21, so as to re-support and limit the winding 5, meet the structural strength requirements of the reactor during long-term use, avoid glue adhering to the fixing rings 21 and the star arm 22, and do not need to remove the glue on the star arm 22, simplifying the glue treatment process and solving the abnormal situation of reduced paint adhesion and heat generation on the surface of the star arm 22.

[0039] Please see Figure 1 , Figure 2 and Figure 3 The locking component 12 includes a fixed locking block 121 fixedly connected to the left side of the insulating support bar 1 and an insertion hole 122 opened on the right side of the insulating support bar 1. The bottom of the fixed locking block 121 is provided with a slot. The fixed locking block 121 and the insertion hole 122 are at the same height and can be inserted into each other. The inside of the insulating support bar 1 is slidably installed with a movable locking block 123 located at the bottom of the insertion hole 122. The top of the movable locking block 123 is wedge-shaped. The bottom of the movable locking block 123 is fixedly connected to the inner wall of the insulating support bar 1 with a return spring 124. The inside of the insulating support bar 1 is slidably installed with a wedge block 125. The inclined surface at the right end of the wedge block 125 slides into the left side of the movable locking block 123. The inclined surface at the right end of the wedge block 125 is inclined to the upper right.

[0040] In practical use, when the insulating support strips 1 are assembled together along the length of the star arm 22, the fixed locking block 121 will be inserted into the interior of the adjacent socket 122. When inserted, the fixed locking block 121 pushes the locking block 123 downward. When the fixed locking block 121 is fully inserted into the socket 122, the slot is just above the moving locking block 123. At this time, the moving locking block 123 is reset by the return force of the return spring 124 and locked into the slot, locking the fixed locking block 121 in the socket 122, thereby locking the two adjacent insulating support strips 1 together and fixing the winding 5 together.

[0041] To release the lock between adjacent insulating support bars 1, press the wedge block 125 on the outermost insulating support bar 1 inward, and use the inclined surface of the wedge block 125 to push the moving block 123 downward to release the lock of the moving block 123 on the fixed block 121. Then, remove the outermost insulating support bar 1 and then remove the wound winding 5. Then, remove the inner insulating support bar 1 and the winding 5 in the same way.

[0042] Please see Figure 1 , Figure 2 and Figure 4 Both ends of the insulating support bar 1 are provided with mating grooves 13. The star arm 22 is inserted into the corresponding mating groove 13. A stop bar 23 for blocking the insulating support bar 1 is fixedly connected on the star arm 22. A reinforcing rib 24 is also connected between two adjacent star arms 22.

[0043] In practical use, when installing the insulating support strip 1, place the innermost insulating support strip 1 between the upper and lower star arms 22, with the star arms 22 inserted into the corresponding mating grooves 13. Then slide the insulating support strip 1 along the length of the star arms 22 until the insulating support strip 1 abuts against the corresponding stop strip 23. The stop strip 23 limits the position of the insulating support strip 1, making it easy to determine the installation position of the insulating support strip 1. After the innermost insulating support strip 1 is installed, install the next insulating support strip 1 between the upper and lower star arms 22, and then slide it along the length of the star arms 22 so that the outer insulating support strip 1 abuts against the inner insulating support strip 1. Then, use the same steps to install all the insulating support strips 1.

[0044] Please see Figure 1 and Figure 4 The tensioning mechanism 4 includes a pull rod 41 that slides through the upper and lower fixed rings 21. Both ends of the pull rod 41 are threaded with nuts 42, and the upper and lower fixed rings 21 are located between the upper and lower nuts 42.

[0045] In practical use, before the impregnation process, after installing the innermost insulating support strip 1 between the upper and lower star arms 22, tighten the nut 42. Use the nut 42 to push the upper and lower fixing rings 21 to move towards each other until the innermost insulating support strip 1 is clamped. Subsequent insulating support strips 1 are slid along the length of the star arm 22 and installed between the upper and lower star arms 22 until all insulating support strips 1 and windings 5 ​​are installed. Then loosen and remove the nut 42, remove the star arms 22 from the upper and lower ends of the insulating support strip 1, impregnate the windings 5, and then install the star arms 22 back to the upper and lower ends of the insulating support strip 1. Then, the pull rod 41 passes through the upper and lower fixing rings 21, tighten the nut 42 to lock the upper and lower fixing rings 21, and finally use the connecting mechanism 3 to lock the star arms 22 and insulating support strips 1.

[0046] Example 1 Please see Figure 1 , Figure 2 and Figure 4The connecting mechanism 3 includes mounting holes 31 at the upper and lower ends of the insulating support bar 1 and located on the front and rear sides of the corresponding docking groove 13. The star arm 22 is provided with a plurality of mounting holes 32 evenly distributed along its length. When the star arm 22 is inserted into the docking groove 13, the mounting holes 31 and the corresponding mounting holes 32 are coaxial. Fixing bolts 33 are inserted into both the mounting holes 31 and the mounting holes 32.

[0047] In practical use, after assembling the insulating support strip 1 and the star arm 22, align the mounting hole 1 31 and the mounting hole 2 32. Then, insert the fixing bolt 33 into the mounting hole 1 31 and the mounting hole 2 32, and tighten the fixing bolt 33 to fix the insulating support strip 1 and the star arm 22 together. This solution has a simple structure and low cost.

[0048] Example 2 Using fixing bolts 33 to fix the insulating support strip 1 and star arm 22 requires a large number of bolts to be tightened, which takes a long time to install and results in low installation efficiency. Therefore, the following technical solution is provided.

[0049] Please see Figure 5 , Figure 6 and Figure 7 The connecting mechanism 3 includes limiting grooves 34 at the upper and lower ends of the insulating support bar 1. The star arm 22 is provided with several limiting grooves 35 equidistantly distributed along its length. The limiting grooves 35 are L-shaped. A slider 36 is slidably installed on the star arm 22, located on the side of the stop bar 23 near the center of the fixing ring 21. A limiting plate 37 is rotatably installed on the left side of the slider 36. Several buckles 38 are fixedly connected to the bottom of the limiting plate 37, which are equidistantly distributed on the left and right. The buckles 38 engage with the corresponding limiting grooves 34 and 35. A locking assembly 39 is installed on the fixing ring 21 to drive the slider 36 to move along the length of the star arm 22.

[0050] In practical use, when fixing the insulating support strip 1 and the star arm 22, all the insulating support strips 1 are assembled between the corresponding upper and lower star arms 22, and the first limiting groove 34 is aligned with the corresponding second limiting groove 35. Then, the limiting plate 37 is rotated to a horizontal position, so that the buckle 38 is inserted from above into the second limiting groove 35 and the first limiting groove 34. Then, the locking assembly 39 pulls the slider 36 to move towards the center of the fixing ring 21, so that the buckle 38 slides into the horizontal section of the second limiting groove 35. Since the inner side is blocked by the stop strip 23 and the outer side is blocked by the buckle 38, the insulating support strip 1 cannot move left or right, thus locking the insulating support strip 1 and the star arm 22. By rotating the limiting plate 37, several buckles 38 fall into the second limiting groove 35 at the same time to lock, greatly reducing the time spent and significantly improving the installation efficiency.

[0051] Please see Figure 5 , Figure 7 , Figure 8 and Figure 9 The locking assembly 39 includes a turntable 391 rotatably mounted on opposite sides of two fixed rings 21. The turntable 391 has several circumferentially evenly distributed arc-shaped grooves 392. A linkage rod 393 is fixedly connected to the side of the slider 36 near the center of the fixed ring 21. A sliding pin 394 is slidably installed inside the arc-shaped grooves 392. The end of the linkage rod 393 near the center of the fixed ring 21 is slidably connected to the sliding pin 394. A threaded sleeve 395 is slidably installed on the inner ring wall of the fixed ring 21. The threaded sleeve 395 is threadedly connected to the turntable 391. A nut 42 is located outside the threaded sleeve 395.

[0052] In practical use, when it is necessary to drive the slider 36 to move towards the center of the fixed ring 21, simply tighten the nut 42. The nut 42 pushes the threaded sleeve 395, causing the threaded sleeve 395 to slide towards the center of the pull rod 41. The threaded sleeve 395 drives the turntable 391 to rotate. The arc groove 392 on the turntable 391 guides the sliding pin 394 to move towards the center of the fixed ring 21. The sliding pin 394 pulls the slider 36 towards the center of the fixed ring 21 through the linkage rod 393, so that the buckle 38 locks the insulating support bar 1 and the star arm 22.

[0053] Please see Figure 5 , Figure 7 , Figure 8 and Figure 9 The locking assembly 39 also includes a limiting block 396 fixedly connected to the outer ring wall of the threaded sleeve 395. The limiting block 396 is slidably connected to the fixed ring 21. The fixed ring 21 has a groove 211. A second reset spring 397 is provided inside the groove 211. One end of the second reset spring 397 is connected to the turntable 391, and the other end is connected to the inner wall of the groove 211.

[0054] In practical use, when unlocking, simply loosen the nut 42. After the nut 42 is no longer pushing, the return force of the reset spring 397 pushes the turntable 391 to rotate in the opposite direction, causing the arc groove 392 to guide the sliding pin 394 to move away from the center of the fixed ring 21. The sliding pin 394 pushes the slider 36 away from the center of the fixed ring 21 through the linkage rod 393, so that the buckle 38 moves to the end of the horizontal section of the limit groove 35 away from the center of the fixed ring 21. At this time, simply rotate the limit plate 37 upward to remove the buckle 38 from the limit groove 35 and release the lock on the insulating support bar 1 and the star arm 22.

[0055] Please see Figure 1 and Figure 10It also includes several insulating spacers 7, which are installed between two adjacent turns of winding 5. The insulating spacers 7 have grooves 71 for accommodating the winding 5. The insulating spacers 7 are distributed between the included angles of two adjacent star arms 22. The outside of the winding 5 is wrapped with glass fiber cloth 6.

[0056] In practical use, the insulating spacer 7 serves to support and isolate adjacent windings 5, preventing them from coming into contact with each other. The fiberglass cloth 6 serves to insulate the outside of the windings 5. After the impregnation process, the fiberglass cloth 6 combines with the adhesive to also provide waterproofing, meeting the needs of outdoor use.

[0057] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding 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 according to the specific circumstances.

[0058] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A reactor winding fixing structure with composite insulation support and limiting, characterized in that, include: A number of insulating support bars (1) are evenly distributed in the circumference and used to support and limit the winding (5). Each set of insulating support bars (1) has a number of bars and is equidistantly distributed in the radial direction of the winding (5). The insulating support bars (1) are provided with a wire groove (11) for accommodating the winding (5). The upper and lower ends of the insulating support bars (1) are equipped with locking components (12) for locking two adjacent insulating support bars (1). Star frame mechanism (2), the star frame mechanism (2) includes a fixing ring (21) disposed on the upper and lower sides of the winding (5), and a number of star arms (22) are evenly installed on the outer ring wall of the fixing ring (21) in the circumferential direction. A connecting mechanism (3) is installed on the star arm (22) for locking the insulating support bar (1) and the star arm (22); The tensioning mechanism (4) is installed between the upper and lower fixed rings (21) to drive the upper and lower fixed rings (21) to move towards each other and lock them together; When fixing the winding (5), the insulating support strips (1) are assembled to the star arm (22) one by one from the inside to the outside, so that the winding (5) is wound on each insulating support strip (1) layer by layer. The two adjacent insulating support strips (1) are locked together by the locking assembly (12), so that the insulating support strips (1) clamp the winding (5). When it is time to impregnate, the tensioning mechanism (4) is released from locking the upper and lower fixing rings (21) and the star arm (22) is removed.

2. The reactor winding fixing structure with composite insulation support and limiting according to claim 1, characterized in that: The locking component (12) includes a fixed locking block (121) fixedly connected to the left side of the insulating support bar (1) and an insertion hole (122) opened on the right side of the insulating support bar (1). The bottom of the fixed locking block (121) is provided with a slot. The fixed locking block (121) and the insertion hole (122) are at the same height and can be inserted into each other. The inside of the insulating support bar (1) is slidably installed with a movable locking block (123) located at the bottom of the insertion hole (122). The bottom of the movable locking block (123) is fixedly connected to the inner wall of the insulating support bar (1). The inside of the insulating support bar (1) is slidably installed with a wedge block (125) sliding left and right. The inclined surface of the right end of the wedge block (125) slides into the left side of the movable locking block (123). The inclined surface of the right end of the wedge block (125) is inclined to the upper right.

3. The reactor winding fixing structure with composite insulation support and limiting according to claim 1, characterized in that: The insulating support bar (1) has a docking groove (13) at both the upper and lower ends. The star arm (22) is inserted into the corresponding docking groove (13). A stop bar (23) for blocking the insulating support bar (1) is fixedly connected on the star arm (22). A reinforcing rib (24) is also connected between two adjacent star arms (22).

4. The reactor winding fixing structure with composite insulation support and limiting according to claim 1, characterized in that: The tensioning mechanism (4) includes a pull rod (41) that slides through the upper and lower fixing rings (21). Both ends of the pull rod (41) are threaded with nuts (42), and the upper and lower fixing rings (21) are located between the upper and lower nuts (42).

5. The reactor winding fixing structure with composite insulation support and limiting according to claim 1, characterized in that: The connecting mechanism (3) includes mounting holes 1 (31) opened at the upper and lower ends of the insulating support bar (1) and located on the front and rear sides of the corresponding docking groove (13). The star arm (22) is provided with a plurality of mounting holes 2 (32) evenly distributed along its length direction. When the star arm (22) is inserted into the docking groove (13), the mounting holes 1 (31) and the corresponding mounting holes 2 (32) are coaxial. Fixing bolts (33) are inserted into the mounting holes 1 (31) and the mounting holes 2 (32).

6. The reactor winding fixing structure with composite insulation support and limiting according to claim 4, characterized in that: The connecting mechanism (3) includes a limiting groove (34) at the upper and lower ends of the insulating support (1), and a plurality of limiting grooves (35) equidistantly distributed along its length direction on the star arm (22). The limiting grooves (35) are L-shaped. A slider (36) located on the side of the stop bar (23) near the center of the fixing ring (21) is slidably installed on the star arm (22). A limiting plate (37) is rotatably installed on the left side of the slider (36). A plurality of buckles (38) equidistantly distributed on the left and right sides are fixedly connected to the bottom of the limiting plate (37). The buckles (38) engage with the corresponding limiting groove (34) and limiting groove (35). A locking component (39) for driving the slider (36) to move along the length direction of the star arm (22) is installed on the fixing ring (21).

7. The reactor winding fixing structure with composite insulation support and limiting according to claim 6, characterized in that: The locking assembly (39) includes a turntable (391) rotatably mounted on opposite sides of two fixed rings (21). The turntable (391) has several circumferentially evenly distributed arc grooves (392). A linkage rod (393) is fixedly connected to the side of the slider (36) near the center of the fixed ring (21). A sliding pin (394) is slidably installed inside the arc groove (392). The end of the linkage rod (393) near the center of the fixed ring (21) is slidably connected to the sliding pin (394). A threaded sleeve (395) is slidably installed on the inner ring wall of the fixed ring (21). The threaded sleeve (395) is threadedly connected to the turntable (391). The nut (42) is located outside the threaded sleeve (395).

8. The reactor winding fixing structure with composite insulation support and limiting according to claim 7, characterized in that: The locking assembly (39) also includes a limiting block (396) fixedly connected to the outer ring wall of the threaded sleeve (395). The limiting block (396) is slidably connected to the fixed ring (21). The fixed ring (21) has a groove (211). A second reset spring (397) is provided inside the groove (211). One end of the second reset spring (397) is connected to the turntable (391), and the other end is connected to the inner wall of the groove (211).

9. The reactor winding fixing structure with composite insulation support and limiting according to claim 1, characterized in that: It also includes several insulating spacers (7), which are installed between two adjacent windings (5). The insulating spacers (7) have grooves (71) for accommodating the windings (5). The insulating spacers (7) are distributed between the included angles of two adjacent star arms (22). The windings (5) are wrapped with glass fiber cloth (6).

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