Assembly support structure and method for dry-type air-core reactor

Abstract

A support structure and method for assembling a dry-type hollow reactor, comprising a movable drive box, wherein the drive box is driven to rotate and is connected to a lead screw, and the lead screw is arranged vertically upward, the lead screw is connected to a mounting tube via a thread, and a limit rod is provided on the upper end of the drive box through the mounting tube; six limit plates are circumferentially arranged on the outer edge of the mounting tube and are hinged thereto, the six limit plates are evenly arranged, and there are only two opposing foundation columns in the vertical plane where two opposing limit plates are located. A portion of the limit slot is arranged higher than the insulating terminal, and can limit the multiple aluminum plates of the star frame when the hoisted hollow reactor falls. It is only necessary to align the star frame with the limit slot, so that the bottom plate of the star frame can fall exactly on the mounting seat at the top of the insulating terminal, simplifying the difficulty of adjusting the hollow reactor in the air.

Description

Technical Field

[0001] The present invention relates to the technical field of on-site assembly of dry-type air-core reactors, and in particular to an assembly support structure and method for dry-type air-core reactors. Background Art

[0002] Dry-type air-core reactor is an electronic power component, mainly used for electromagnetic compatibility and reactive power compensation of electrical equipment, which can improve the stability and voltage level of power system, improve power quality, and suppress electromagnetic interference. One of the existing dry-type air-core reactor designs is the attached Figure 1 As shown in the figure, it mainly includes a hollow coil ③, and star frames composed of multiple aluminum plates are respectively arranged above and below the coil ③. A bottom plate ⑩ is installed at the bottom of the lower star frame ②. If the single layer is used outdoors, a rain cap needs to be installed at its upper end.

[0003] When installing dry-type hollow reactors on site, two large equipments are usually required: a crane and a lifting platform. The crane will lift the hollow reactor with the rain cap installed and move it to the top of the insulating terminal installed on the foundation column, so that multiple bottom plates ⑩ are aligned with the insulating terminals on multiple different foundation columns. The crane will lower the reactor to the insulating terminal, and the staff will stand on the lifting platform and fix the bottom plate to the mounting parts on the top of the insulating terminal with bolts. In the actual installation, the crane driver is far away from the reactor and is in different positions. The position makes it difficult for the multiple bottom plates (10) at the bottom of the lower star frame (2) to be aligned with the multiple insulating terminals. Once one or more bolt holes are misaligned, the crane driver has to lift the reactor again and the workers on the lifting platform are required to frequently adjust the position of the reactor. This operation is cumbersome and increases the workers' high-altitude working time, which increases the risk of installation operations. In addition, the frequent dropping and lifting of the reactor causes the bottom plate (10) to collide with the top of the insulating terminal many times, which can easily cause damage to the fixing position of the bottom plate (10) and the lower star frame (2). Summary of the Invention

[0004] In order to solve the problem that when the air-core reactor is installed at the construction site, the bottom plate and the top of the insulating terminal are difficult to align, and the position of the reactor needs to be frequently adjusted, the present invention provides an assembly support structure and method for a dry-type air-core reactor.

[0005] The technical solutions of the present invention are as follows:

[0006] An assembly support structure for a dry-type hollow reactor. The assembly support structure can be moved between six basic columns of the reactor arranged in a regular hexagonal pattern. An insulating terminal is installed on the top of each basic column. Multiple bottom plates at the bottom of the hollow reactor are respectively installed on the mounting seats at the top of the insulating terminals. The basic columns are set in a cylindrical shape.

[0007] The assembly support structure includes a movable drive box, the drive box is driven to rotate and connected to a lead screw, and the lead screw is arranged vertically upward, the lead screw is connected to a mounting cylinder through a thread, and a limit rod is provided at the upper end of the drive box through the mounting cylinder;

[0008] The outer edge of the mounting cylinder is circumferentially provided with six limit plates hinged thereto, the six limit plates being evenly arranged, two opposite limit plates being in the same vertical plane, the three vertical planes having only one vertical intersection line, and when the intersection line is collinear with the central axis of the regular hexagon formed by the six foundation columns, there are only two opposite foundation columns in the vertical plane where the two opposite limit plates are located;

[0009] The limit plate moves from a vertical state around the hinge point in a direction away from the mounting tube, and can be locked and fixed with the hinge end in the vertical state and in the extreme position after rotation. The limit plate is provided with a limit slot, and the end of the limit slot away from the hinge point is open. When the limit plate is in the extreme position away from the mounting tube, the open end of the limit slot can move with the mounting tube to a mounting seat higher than the top end of the insulating terminal, so as to limit the star frame when the hoisted air-core reactor falls.

[0010] The assembly support structure also includes a centering component, and the centering component is located at the bottom of the drive box. The centering component can cooperate with multiple basic columns through a driving device, and when the two cooperate, the extended axis of the screw passes through the midpoint of the regular hexagon formed by the multiple columns.

[0011] In order to make the limiting plate be in an upward tilted state so that the open end of the limiting groove can limit the falling star frame, the preset angle of rotation of the limiting plate around the hinge point from the vertical state is 10°-45°.

[0012] In order to make the upper opening of the limit slot larger than the lower opening, thereby facilitating the entry of the planetary frame, the longitudinal cross-section of the limit slot is an isosceles trapezoidal shape, and the upper base length of the isosceles trapezoid is longer than the lower base length. This design ensures that when the planetary frame falls, even if there is a slight offset between the planetary frame and the limit slot, the multiple aluminum plates can be quickly inserted into the limit slot. The size of the limit slot gradually narrows from top to bottom. During the falling process, the hollow reactor is restrained by the inclined limit slot on the planetary frame, which can be pushed to the center position, thereby driving the planetary frame to fine-tune to align with the limit slot, ensuring that the bottom plate of the planetary frame can fall completely onto the mounting seat.

[0013] To ensure the limiting plate can hold the spider in place at a higher position and improve its effectiveness, the limiting plate can be moved with the mounting barrel to a preset height, ensuring that the open end of the limiting slot is 15-40 cm above the mounting base, and the horizontal distance from the open end to the center of the mounting barrel is no less than half the horizontal distance from the mounting base to the lead screw axis. This design ensures that the limiting slot can begin to limit the spider at a height of at least 15-40 cm above the mounting base, making it easier for workers on the lifting platform to observe and align the spider with the limiting slot.

[0014] In order to facilitate the assembly of the support structure between multiple foundation columns, the diameter of the installation cylinder is smaller than the width of the drive box, and the maximum width of the limit plate plus the installation cylinder when in the vertical state is not greater than the width between two adjacent foundation columns.

[0015] The specific design of the centering assembly is as follows: the centering assembly includes a driving gear installed at the bottom of the drive box, and the driving gear is driven to rotate by the driving device. The driving gear is meshed with a driven gear, and the axis of the driven gear is collinear with the center of the mounting cylinder;

[0016] Six fixing plates are installed in a circumferential array at the bottom of the driven gear, and the array angle is consistent with the array angle of the six limiting plates. A convex groove is opened along the length direction of the fixing plate, and a sliding rod is slidably installed in the convex groove. A sliding column is provided on the sliding rod, and six arc grooves for limiting the sliding column are opened on the driven gear;

[0017] The sliding rod is hinged with a centering rod in a damping manner and can rotate in a vertical plane. A centering plate is installed at the end of the centering rod, and the end of the centering plate away from the centering rod is arranged in an arc-shaped concave shape.

[0018] The specific design of the drive mechanism includes a power motor mounted within a drive box, with the motor's output shaft connected to a driving gear via a torque limiter, capable of driving the driving gear. The torque limiter prevents the motor from further rotating the driving gear after the six centering plates collide with the six foundation columns. A hinged centering rod allows the entire mechanism to be positioned between the six foundation columns, and the retractable centering rod allows the extension of the centering plate to be adjusted, facilitating centering while also accommodating foundation columns of varying sizes.

[0019] In this way, when the power motor drives the driving gear to rotate, the sliding rod is driven to slide along the convex groove through the driven gear and the arc groove. At this time, the six centering plates all move outward, and the centering plate closer to the foundation column contacts the foundation column first. Due to the continuous rotation of the power motor, the assembly support structure as a whole will be pushed to a position close to the center of the six foundation columns. During the movement, the centering plate continues to move outward until more centering plates contact the foundation columns. When multiple concave centering plates act on the foundation columns, the assembly support device will be pushed to rotate until the concave parts of the six centering plates are matched with the foundation columns, so that the assembly support structure is centered. At this time, the six fixed plates are aligned one by one with the six foundation columns, and the array angles of the six fixed plates and the six limit plates are consistent. At this time, the six limit plates are aligned one by one with the six foundation columns. It ensures that the limiting groove is aligned with the mounting seat on the top of the insulating terminal. When the star frame is limited, the star frame can fall to the middle position of the mounting seat, ensuring that the base plate is aligned with the mounting seat. After the assembly support structure is pushed into the six basic columns as a whole and the centering plate is rotated to a horizontal state, the power motor is started to complete the centering of the assembly support structure. In addition, the requirements for the initial position of the assembly support structure are low, that is, the centering work can be automatically completed even if it is in an eccentric state.

[0020] In order to enable the assembly support structure to support the bottom of the hollow reactor when it is installed, two support columns are provided on the upper end face of the mounting tube, and the height of the support columns is less than the maximum height to which the limit plate can move. When the limit plate moves to a preset height along with the mounting tube, the height of the support columns is higher than the mounting seat, and the height difference between the two is the thickness of the base plate.

[0021] In order to facilitate the rotation of the lead screw, and after centering adjustment, a driving handle is provided on one side of the drive box, which can drive the lead screw to rotate through the driving assembly.

[0022] A method for assembling and supporting a dry-type air-core reactor, wherein the assembly support structure is applied when installing the air-core reactor, and the method comprises the following steps:

[0023] S1: Mobile assembly support structure;

[0024] Move the assembly support structure between two adjacent foundation columns to an area close to a regular hexagon formed by six foundation columns;

[0025] S2: Alignment of the assembly support structure;

[0026] S2.1: Turn the six centering rods one by one to a horizontal position;

[0027] S2.2: Start the power motor, which drives the centering plate via the centering rod toward the driven gear until one or more centering plates contact the foundation columns. Under the action of the reaction force, the entire assembly support structure rotates and moves toward the center of the six foundation columns until the six centering plates contact the six foundation columns respectively. At this time, the torque limiter restricts the power motor from driving the driving gear.

[0028] S2.3: Turn off the power motor;

[0029] S3: Expand multiple limit plates;

[0030] Release the six limit plates one by one, and rotate the top of each limit plate away from the mounting tube until the limit plate is rotated to the preset angle, fixing the limit plate to the hinge end;

[0031] S4: Raise the limit plate to the preset height;

[0032] Turn the drive handle to drive the lead screw through the drive assembly, and the mounting cylinder moves upward along the limit rod, which in turn drives the six limit plates to move upward synchronously until the height difference between the open end of the limit slot and the mounting seat is within the range of 15cm-40cm;

[0033] S5: Fix the air-core reactor to the insulation terminal;

[0034] Use a crane to lift the hollow reactor above the insulating terminal and move the hollow reactor downward until the star frame at the bottom of the hollow reactor is close to the limit plate. The staff on the lifting work platform pushes or rotates the hollow reactor so that the six aluminum plates of the star frame are vertically aligned with the limit grooves of the six limit plates. Continue to drop the hollow reactor, and the multiple aluminum plates of the star frame move downward along the multiple limit grooves until the support column contacts the bottom of the star frame and the bottom plate contacts the mounting seat on the insulating terminal. Fix the bottom plate and the mounting seat with bolts.

[0035] The beneficial effects of the present invention are as follows: the present invention is an assembly support structure and method for a dry-type hollow reactor, which is different from the existing on-site installation method of the hollow reactor. The present invention adopts an assembly support structure for auxiliary installation, through a lifting installation cylinder, and six limit plates are installed on the outer edge of the installation cylinder. After the limit plates are unfolded and rise to a preset height, a part of the limit slot is higher than the insulating terminal setting, which can limit the multiple aluminum plates of the star frame when the hoisted hollow reactor falls. It is only necessary to align the star frame with the limit slot, so that the bottom plate of the star frame can fall just at the absolute position. The mounting base on the top of the insulating terminal simplifies the difficulty of adjusting the hollow reactor in the air and greatly reduces the number of frequent lifting of the hollow reactor, thereby reducing the number of collisions between the planetary frame and the base plate, which is beneficial to protecting the fixing strength of the two; secondly, the setting of the centering component can quickly and automatically move the assembly support component to the center position, and the retractable centering rod can make the assembly support structure adapt to the foundation columns arranged at different spacings, and after centering, each limit plate is just aligned with the insulating terminal on each foundation column, which greatly saves the adjustment time of the assembly support component. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] By reading the detailed description of the preferred embodiment below, the solutions and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only for illustrating the preferred embodiment and are not to be considered as limiting the present invention.

[0037] In the attached figure:

[0038] Figure 1 It is a schematic diagram of the structure of the air-core reactor;

[0039] Figure 2 Use schematic diagrams for assembling support structures;

[0040] Figure 3 A partial schematic diagram of the assembly support structure;

[0041] Figure 4 A top view of the relative positions of multiple limit plates and foundation columns;

[0042] Figure 5 It is a schematic diagram of the centering component;

[0043] Figure 6 It is a partial cross-sectional view of the centering structure;

[0044] Figure 7 This is the installation diagram of the air-core reactor;

[0045] The components represented by the reference numerals in the figure are:

[0046] 1. Hollow reactor; 2. Foundation column; 3. Insulation terminal; 4. Base plate; 5. Mounting seat; 6. Drive box; 7. Screw; 8. Mounting cylinder; 9. Limit rod; 10. Limit plate; 11. Articulated end; 12. Limit groove; 13. Centering assembly; 131. Driving gear; 132. Driven gear; 133. Fixed plate; 134. Convex groove; 135. Sliding rod; 136. Sliding column; 137. Arc groove; 138. Centering rod; 139. Centering plate; 14. Drive device; 141. Power motor; 142. Torque limiter; 15. Support column; 16. Drive handle; 17. Star frame; 18. Universal wheel. DETAILED DESCRIPTION

[0047] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. The present disclosure can be implemented in various forms and should not be limited by the embodiments described herein.

[0048] Example

[0049] An assembly support structure and method for a dry-type air-core reactor. First, the assembly support structure is described. Figure 2 , the assembly support structure can be moved between the six basic columns 2 of the reactor that are arranged in a regular hexagon. The assembly support structure designed in this scheme is mainly set in the form of six basic columns 2, and this scheme is also different from the existing basic columns 2 set in a square. The basic columns 2 in this scheme are cylindrical and are used to adapt to the centering components 13 of this scheme. If the basic columns 2 are designed to be other numbers, the design method of the assembly support structure can also be adjusted according to the specific number, and an insulating terminal 3 is installed on the upper end of each basic column 2. The insulating terminal 3 is mainly used for insulation and support of the hollow reactor 1. The multiple base plates 4 at the bottom of the hollow reactor 1 are respectively installed on the mounting seat 5 at the top of the insulating terminal 3. The structure of the hollow reactor 1 is as shown Figure 1 As shown, the bottom plate 4 in the figure is mainly used to be fixed to the mounting base 5 on the top of the insulating terminal 3 by bolts. The fixing of multiple bottom plates 4 realizes the fixing of the entire air-core reactor 1.

[0050] Specifically, the assembly support structure includes a movable drive box 6. In this embodiment, a universal wheel 18 is installed at the bottom of the drive box 6, which can be moved by pushing, pulling or rotating the drive box 6. In addition, in order to facilitate the fixation of the drive box 6, the drive box 6 is driven and rotated to be connected with a screw 7, and the screw 7 is arranged vertically upward. A driving handle 16 is provided on one side of the drive box 6, which can drive the screw 7 to rotate through a driving component. The driving component is arranged in the drive box 6. Specifically, a driving method such as a bevel gear can be used, or a driving motor can be used to directly drive the screw 7 to rotate. The existing technology can be used here and no unnecessary details are given. The screw 7 is connected to the mounting tube 8 through a thread, and a limit rod 9 is provided at the upper end of the drive box 6 through the mounting tube 8. The driving handle 16 drives the screw 7 to rotate, and then drives the mounting tube 8 to slide upward along the limit rod 9 through the thread. In order to improve the stability of the assembly support structure, a detachable support rod (not shown) can be provided. The support rod is tilted and connected to the limit rod 9, and the bottom is supported on the ground to support the whole.

[0051] One of the main design points of this scheme is that six limit plates 10 hinged to the outer edge of the mounting tube 8 are circumferentially arranged, and the six limit plates 10 are evenly arranged. The center line of the six limit plates 10 is in the shape of a regular hexagon. The two opposite limit plates 10 are in the same vertical plane. The three vertical planes have only one vertical intersection line, and when the intersection line is collinear with the central axis of the regular hexagon composed of the six foundation columns 2, there are only two opposite foundation columns 2 in the vertical plane where the two opposite limit plates 10 are located. The vertical plane is a plane parallel to the diameter direction of the mounting tube 8, that is, the vertical middle plane of the limit plate 10 is coplanar with the vertical middle plane of the foundation column 2, so that the limit plate 10 is in the middle position of the corresponding foundation column 2, and the one-to-one correspondence between the limit plate 10 and the foundation column 2 is mainly adjusted through the centering component 13.

[0052] Among them, which is also another major design point of this program, is to combine Figure 3 、 Figure 5 and Figure 6, the centering component 13 is installed at the bottom of the drive box 6 and is driven by the drive device 14 to work. It can cooperate with multiple basic columns 2, and when the two cooperate, the extended line of the axis of the screw 7 passes through the midpoint of the regular hexagon composed of multiple basic columns 2, so that the screw 7 is in the center position of the six basic columns 2. Specifically, the centering component 13 includes a driving gear 131 installed at the bottom of the drive box 6, and the driving gear 131 is driven to rotate by the drive device 14. The driving gear 131 is meshed with a driven gear 132, and the bottom is supported by the bottom of the drive box 6 through a rotating shaft. The number of teeth of the driven gear 132 is more than the number of teeth of the driving gear 131, the tooth top circle diameter is larger than the tooth top circle diameter of the driving size, and the axis of the driven gear 132 is collinear with the center of the mounting cylinder 8, so that the coaxiality of the two is consistent, and the bottom of the driven gear 132 is Six fixing plates 133 are installed in a circumferential array, and the array angle is consistent with the array angle of the six limiting plates 10, that is, in the vertical direction, the six fixing plates 133 are aligned one by one with the six limiting plates 10, and the vertical mid-planes of the two are coplanar, so that the projection of the limiting groove 12 in the direction of the fixing plate 133 is located in the middle of the fixing plate 133, and a convex groove 134 is provided along the length direction of the fixing plate 133, and the end away from the center of the driven gear 132 is open, and a sliding rod 135 is slidably installed in the convex groove 134, and a sliding column 136 is provided on the sliding rod 135, and six arc grooves 137 for limiting the sliding column 136 are provided on the driven gear 132, that is, when the driven gear 132 rotates, the setting of the arc groove 137 can push the sliding column 136 to move, and then the sliding column 136 drives the sliding rod 135 to slide along the convex groove 134.

[0053] On the basis of the above structure, the sliding rod 135 is damped and hinged with a centering rod 138, which can rotate in a vertical plane, that is, the centering rod 138 can only rotate around the hinge point under the action of external force, and a centering plate 139 is installed at the end of the centering rod 138. The end of the centering plate 139 away from the centering rod 138 is set to an arc-shaped inward concave shape, which is adapted to the cylindrical foundation column 2 set in this scheme, and when the centering rod 138 is rotated to a vertical state, the sum of the maximum widths of the drive box 6 and the centering rod 138 is less than the distance between the two adjacent foundation columns 2, ensuring that the whole can enter between the foundation columns 2.

[0054] On the basis of the above structure, the driving device 14 includes a power motor 141 installed in the driving box 6, and the output shaft of the power motor 141 is connected to the driving gear 131 through the torque limiter 142, which can drive the driving gear 131 to rotate. The torque limiter 142 is an existing device, and its working principle and structure are well known to those skilled in the art and will not be described in detail. Through the drive of the power motor 141, the driving gear 131 can be driven to rotate in cooperation with the torque limiter 142. When the six centering plates 139 are in contact with the six foundation columns 2 one by one, due to the adaptation of the centering plates 139 to the foundation columns 22, all the centering plates 139 can continue to be limited, and then a larger torque can be provided for the rotation of the driven gear 132. Under the action of the torque limiter 142, the drive to the driving gear 131 can be stopped, and the power motor 141 can be turned off at this time.

[0055] When multiple centering plates 139 are against the basic columns 2 one by one, that is, the fixed plate 133 and the basic columns 2 are aligned, the drive box 6 is located at the center of the six basic columns 2 as a whole, and due to the position setting of the limit plate 10 and the fixed plate 133, the limit plate 10 is also aligned with the basic columns 2 one by one, so that the limit grooves 12 are all aligned with the insulating terminals 3, ensuring the alignment of the limit grooves 12 and the mounting base 5.

[0056] After adjusting the alignment of the assembly support component, the limit plate 10 needs to be rotated to an upward tilted state so that the falling hollow reactor 1 can be limited. The specific design of the limit plate 10 is that the limit plate 10 moves from the vertical state around the hinge point in the direction away from the mounting tube 8, and can be locked and fixed with the hinge end 11 in the vertical state and the extreme position after rotation. The locking with the hinge end 11 can be fixed by tightening bolts. The limit plate 10 is in a vertical state in the initial state. The purpose of setting the hinge is to make all the limit plates 10 initially maintain a vertical state, which can shorten the width of the assembly support component in the horizontal direction and facilitate the overall entry into the six foundation columns 2.

[0057] It should be noted that the diameter of the mounting tube 8 is smaller than the width of the drive box 6, and the maximum width of the limit plate 10 plus the mounting tube 8 when in the vertical state is not greater than the width between two adjacent foundation columns 2, so that when the position of the assembly support component is adjusted, the overall width is smaller than the minimum distance between two adjacent foundation columns 2.

[0058] Based on the above structure, combined Figure 3 and Figure 7The limiting plate 10 is provided with a limiting groove 12 through it, and the end of the limiting groove 12 away from the hinge point is open. When the limiting plate 10 is in the extreme position away from the mounting tube 8, that is, when it is rotated to a preset angle in the direction away from the mounting tube 8, the open end of the limiting groove 12 can move with the mounting tube 8 to the mounting seat 5 higher than the top of the insulating terminal 3, and can limit the star frame 17 when the hoisted hollow reactor 1 falls. The setting of the preset angle ensures that it is 10°-45° with the vertical direction, so that the limiting plate 10 is in an upward tilted state, and the opening of the limiting groove 12 is tilted upward to ensure that the aluminum plate of the star frame 17 can move along the limiting groove 12 moves downward, the limit groove 12 limits its movement, and the limit plate 10 can move to a preset height along with the mounting tube 8, so that the open end of the limit groove 12 is 15cm-40cm higher than the height of the mounting seat 5, ensuring that the staff standing on the lifting work platform can observe the position of the star frame 17 and assist in aligning the star frame 17 with the limit groove 12, with a certain observation and operation distance, and the horizontal length from the open end to the center of the mounting tube 8 is not less than 1 / 2 of the horizontal length from the mounting seat 5 to the axis of the screw 7, ensuring that the limit groove 12 can have a longer limiting length for the star frame 17, further ensuring the stability of the star frame 17 when falling.

[0059] It should be noted that the longitudinal section of the limit groove 12 is an isosceles trapezoid, and the length of the upper base of the isosceles trapezoid is greater than the length of the lower base, so that the upper end face opening of the limit groove 12 is larger than the lower end face opening. The purpose of this design is to facilitate the entry of the star frame 17 into the limit groove 12, and if there is a slight offset between the star frame 17 and the limit groove 12 when the hollow inductor 1 falls, it can also ensure that the star frame 17 can enter the limit groove 12, and due to the limitation of the limit groove 12 and the narrowing of the limit groove 12 from top to bottom, and the bottom of the drive box 6 and the fixing of the whole with the supporting rod, the hollow inductor 1 can be fine-tuned to return it to the center, ensuring that the base plate 4 can accurately fall on the mounting seat 5.

[0060] After the base plate 4 falls onto the mounting seat 5, in order to support the bottom of the hollow inductor 1 and cooperate with the hoisting of the upper end to improve its stability, two support columns 15 are provided on the upper end face of the mounting cylinder 8. The two support columns 15 are located on opposite sides of the screw 7, and the height of the support columns 15 is less than the maximum height to which the limit plate 10 can move. When the limit plate 10 moves to a preset height along with the mounting cylinder 8, the height of the support columns 15 is higher than the mounting seat 5, and the height difference between the two is the thickness of the base plate 4, so that after the base plate 4 falls onto the mounting seat 5, the support columns 15 can support the bottom of the middle position of the star frame 17, and then the base plate 4 and the mounting seat 5 are bolted.

[0061] The above is an introduction to the assembly support structure of the air-core reactor 1 , and the method for installing and using the structure at the construction site of the air-core reactor 1 is described below.

[0062] A method for assembling and supporting a dry-type air-core reactor, wherein the assembly support structure described above is applied when installing the air-core reactor 1, comprises the following steps:

[0063] S1: Move the assembly support structure, first push the assembly support structure into the regular hexagonal area formed by six foundation columns 2;

[0064] Move the assembly support structure between two adjacent foundation columns 2 to a position close to the center of the regular hexagon formed by the six foundation columns 2. This step can be completed by the staff in conjunction with the universal wheel 18 at the bottom of the drive box 6. At this time, the centering rod and the limit plate 10 are both in a vertically upward position to ensure that the assembly support structure can enter;

[0065] S2: Centering the assembly support structure. This step is to center the assembly support structure so that it is precisely in the middle of the six foundation columns 2 and the limit plate 10 is aligned with the insulating terminal 3;

[0066] S2.1: Rotate the six centering rods 138 one by one to a horizontal position. At this time, the centering rods 138 are retracted, and the space formed by the six foundation columns 2 can accommodate the entire assembly support structure.

[0067] S2.2: Start the power motor 141, and drive the driven gear 132 to rotate through the driving gear 131, and then drive the multiple centering rods 138 to move outward along the convex groove 134 until one or more centering plates 139 closest to the foundation column 2 collide with the side of the foundation column 2. The power motor 141 continues to rotate, and the foundation column 2 applies a reaction force to the centering plate 139, pushing the entire assembly support structure toward the center of the six foundation columns 2, that is, moving away from the foundation column 2 currently in conflict. Moreover, due to the concave portion of the centering plate 139 matching the cylindrical foundation column 2, the assembly support structure as a whole moves around the conflicting position. When the motor 141 is in rotation, it continues to drive the multiple centering plates 139 to move outward until more centering plates 139 collide with the sides of the foundation columns 2. At the same time, a reaction force is applied to the centering plates 139 to push the entire assembly support structure further toward the center of the six foundation columns 2 and rotate. After fine-tuning the position, the motor 141 continues to drive the multiple centering plates 139 to move outward until all the centering plates 139 collide with the foundation columns 2 one by one. At this time, the six foundation columns 22 limit the centering plates 139, and then limit the rotation of the driven gear 132, cooperating with the torque limiter 142 to limit the rotation of the driving gear 131.

[0068] S2.3: Turn off the power motor 141;

[0069] S3: unfolding the plurality of limit plates 10 so that the plurality of limit plates 10 are tilted upward;

[0070] Release the six limit plates 10 one by one. In this embodiment, unscrew the fastening bolts and rotate the top ends of the limit plates 10 one by one in a direction away from the mounting tube 8 until the limit plates 10 are rotated to a preset angle. Fix the limit plates 10 to the hinge ends 11 and use the fastening bolts to fix them to the hinge ends 11 at this position.

[0071] S4: Raise the limiting plate 10 to a preset height so that the top of the limiting plate 10 exceeds the height of the top mounting seat 5 of the insulating terminal 3 to limit the falling star frame 17;

[0072] By turning the driving handle 16, the lead screw 7 is driven to rotate through the driving assembly, and the mounting cylinder 8 moves upward along the limiting rod 9, which in turn drives the six limiting plates 10 to move upward synchronously until the height difference between the opening end of the limiting groove 12 and the mounting seat 5 is within the range of 15cm-40cm, and the limiting groove 12 and the centering rod are just in the middle position of the mounting seat 5. In this embodiment, the maximum height of the opening end can be 35cm higher than the height of the mounting seat 5, which facilitates observation by the staff on the lifting work platform and alignment of the star frame 17 with the limiting groove 12;

[0073] S5: Fix the air-core reactor 1 to the insulation terminal 3;

[0074] Use a crane to lift the hollow reactor 1 above the insulating terminal 3 and transport the hollow reactor 1 downward until the star frame 17 at the bottom of the hollow reactor 1 is close to the limit plate 10, and the distance from the top of the limit plate 10 is visually 30cm-50cm. The crane driver is signaled to stop falling. The staff on the lifting work platform pushes or rotates the hollow reactor 1 so that the six aluminum plates of the star frame 17 are aligned with the limit grooves 12 of the six limit plates 10 in the vertical direction. The crane driver is signaled to continue lowering the hollow reactor 1. The multiple aluminum plates of the star frame 17 move downward along the multiple limit grooves 12 until the support column 15 conflicts with the bottom of the star frame 17. At this time, the bottom plate 4 and the mounting seat 5 on the insulating terminal 3 also conflict with each other. The support column 15 will not bear excessive pressure, and will share the pressure with the upper crane and the mounting seat 5 to ensure the stability of the hollow reactor 1. The staff on the lifting work platform uses bolts to fix the bottom plate 4 and the mounting seat 5.

[0075] After the installation is completed, the limit plate 10 is first controlled to move downward along with the mounting seat 5, and then the staff rotates the limit plate 10 and the centering rod 138 to a vertical state, starts the power motor 141 to reverse, drives the sliding rod 135 to retract, and moves the assembled support structure as a whole out of the foundation column 2.

Claims

1. An assembly support structure for a dry-type air-core reactor, wherein the assembly support structure can be moved between six foundation columns (2) of the air-core reactor (1) arranged in a regular hexagonal pattern, and an insulating terminal (3) is installed at the upper end of each foundation column (2), and a plurality of base plates (4) at the bottom of the air-core reactor (1) are respectively installed on the mounting seats (5) at the top ends of the insulating terminals (3), characterized in that: The basic column (2) is configured as a cylindrical column. The assembly support structure comprises a movable drive box (6), wherein the drive box (6) is driven to rotate and is connected to a lead screw (7), and the lead screw (7) is arranged vertically upward, and the lead screw (7) is connected to a mounting cylinder (8) through a thread, and a limit rod (9) is provided at the upper end of the drive box (6) through the mounting cylinder (8); Six limiting plates (10) hinged to the outer edge of the installation cylinder (8) are arranged circumferentially, and the six limiting plates (10) are evenly arranged. Two opposing limiting plates (10) are located in the same vertical plane. The three vertical planes have only one vertical intersection line, and when the intersection line is collinear with the central axis of the regular hexagon formed by the six foundation columns (2), there are only two opposing foundation columns (2) in the vertical plane where the two opposing limiting plates (10) are located. The limit plate (10) moves from a vertical state around the hinge point in a direction away from the mounting tube (8), and can be locked and fixed with the hinge end (11) in the vertical state and in the extreme position after rotation. The limit plate (10) is provided with a limit groove (12) through it, and the end of the limit groove (12) away from the hinge point is open. When the limit plate (10) is in the extreme position away from the mounting tube (8), the open end of the limit groove (12) can move with the mounting tube (8) to the mounting seat (5) above the top end of the insulating terminal (3); The assembly support structure further includes a centering component (13), and the centering component (13) is located at the bottom of the drive box (6). The centering component (13) can cooperate with multiple basic columns (2) through a drive device (14), and when the two cooperate, the axis extension line of the screw (7) passes through the midpoint of the regular hexagon formed by the multiple columns; The centering assembly (13) includes a driving gear (131) installed at the bottom of the driving box (6), and the driving gear (131) is driven to rotate by the driving device (14). The driving gear (131) is meshed with a driven gear (132), and the axis of the driven gear (132) is collinear with the center of the circle of the mounting cylinder (8); Six fixing plates (133) are installed in a circumferential array at the bottom of the driven gear (132), and the array angle is consistent with the array angle of the six limiting plates (10). A convex groove (134) is provided along the length direction of the fixing plate (133), and a sliding rod (135) is slidably installed in the convex groove (134). A sliding column (136) is provided on the sliding rod (135), and six arc grooves (137) for limiting the sliding column (136) are provided on the driven gear (132); The sliding rod (135) is hinged with a centering rod (138) in a damping manner and can rotate in a vertical plane. A centering plate (139) is installed at the end of the centering rod (138). The end of the centering plate (139) away from the centering rod (138) is set to an arc-shaped concave shape.

2. The assembly support structure of the dry-type air-core reactor according to claim 1, characterized in that: The preset angle of rotation of the limiting plate (10) around the hinge point from the vertical state is 10°-45°.

3. The assembly support structure of a dry-type air-core reactor according to claim 1, characterized in that: The longitudinal section of the limiting groove (12) is in the shape of an isosceles trapezoid, and the length of the upper base of the isosceles trapezoid is greater than the length of the lower base.

4. The assembly support structure of a dry-type air-core reactor according to claim 2, characterized in that: The limiting plate (10) can be moved to a preset height along with the mounting tube (8), so that the opening end of the limiting groove (12) is 15 cm to 40 cm higher than the mounting seat (5), and the horizontal length from the opening end to the center of the mounting tube (8) is not less than 1 / 2 of the horizontal length from the mounting seat (5) to the axis of the lead screw (7).

5. The assembly support structure of a dry-type air-core reactor according to claim 1, characterized in that: The diameter of the installation cylinder (8) is smaller than the width of the drive box (6), and the maximum width of the limit plate (10) plus the installation cylinder (8) when in a vertical state is no greater than the width between two adjacent foundation columns (2).

6. The assembly support structure of a dry-type air-core reactor according to claim 1, characterized in that: The driving device (14) includes a power motor (141) installed in a driving box (6), and the output shaft of the power motor (141) is connected to the driving gear (131) through a torque limiter (142), and can drive the driving gear (131) to rotate.

7. The assembly support structure of a dry-type air-core reactor according to claim 6, characterized in that: Two support columns (15) are provided on the upper end surface of the installation cylinder (8), and the height of the support columns (15) is less than the maximum height to which the limiting plate (10) can move. When the limiting plate (10) moves to a preset height along with the installation cylinder (8), the height of the support columns (15) is higher than that of the installation seat (5), and the height difference between the two is the thickness of the base plate (4).

8. The assembly support structure of a dry-type air-core reactor according to claim 7, characterized in that: A driving handle (16) is provided on one side of the driving box (6), which can drive the lead screw (7) to rotate through the driving assembly.

9. A method for assembling and supporting a dry-type air-core reactor, wherein the assembly and supporting structure according to claim 8 is applied when installing the air-core reactor (1), characterized in that: The following steps are involved: S1: Mobile assembly support structure; Moving the assembly support structure between two adjacent foundation columns (2) to a regular hexagonal area formed by six foundation columns (2); S2: Alignment of the assembly support structure; S2.1: Rotate the six centering rods (138) one by one to a horizontal state; S2.2: Start the power motor (141), and drive the centering plate (139) to move away from the driven gear (132) through the centering rod (138), until one or more centering plates (139) collide with the foundation column (2). Under the action of the reaction force, the entire assembly support structure is driven to rotate and move toward the center position of the six foundation columns (2) until the six centering plates (139) collide with the six foundation columns (2) respectively. At this time, the torque limiter (142) limits the power motor (141) from driving the driving gear (131) to rotate; S2.3: Turn off the power motor (141); S3: unfolding the plurality of limiting plates (10); The six limiting plates (10) are sequentially released, and the top ends of the limiting plates (10) are rotated one by one in a direction away from the mounting tube (8) until the limiting plates (10) are rotated to a preset angle, and the limiting plates (10) are fixed to the hinged ends (11); S4: Raise the limit plate (10) to a preset height; The driving handle (16) is rotated to drive the lead screw (7) to rotate through the driving assembly, and the mounting cylinder (8) moves upward along the limiting rod (9), which in turn drives the six limiting plates (10) to move upward synchronously until the height difference between the opening end of the limiting groove (12) and the mounting seat (5) is within the range of 15 cm to 40 cm; S5: Fix the air-core reactor (1) and the insulating terminal (3); The hollow reactor (1) is hoisted to the top of the insulating terminal (3) by using a crane, and the hollow reactor (1) is transported downward until the star frame (17) at the bottom of the hollow reactor (1) is close to the limit plate (10). The staff on the lifting work platform pushes or rotates the hollow reactor (1) so that the six aluminum plates of the star frame (17) are aligned with the limit grooves (12) of the six limit plates (10) in the vertical direction. The hollow reactor (1) is continued to be lowered, and the multiple aluminum plates of the star frame (17) move downward along the multiple limit grooves (12) until the support column (15) contacts the bottom of the star frame (17) and the bottom plate (4) contacts the mounting seat (5) on the insulating terminal (3). The bottom plate (4) and the mounting seat (5) are fixed by bolts.

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