Combined connection type transformer for booster station

Abstract

A combined connection type transformer for a booster station relates to the technical field of dry type transformers and comprises a transformer box, a box door is hinged to the open end of the transformer box, a containing groove is formed in the bottom of the transformer box in a penetrating mode, a U-shaped base horizontally connected with the transformer box in a sliding mode is arranged in the containing groove, and two lower clamping pieces are detachably arranged on the top of the U-shaped base. Two lower clamping pieces are arranged above the U-shaped base, a lower iron yoke detachably connected with the two lower clamping pieces is arranged between the two lower clamping pieces, two upper clamping pieces are arranged above the U-shaped base, an upper iron yoke detachably connected with the two upper clamping pieces is arranged between the two upper clamping pieces, the upper iron yoke and the lower iron yoke are installed in an inserted mode, supporting plates are fixedly arranged at the four corners of the top of the U-shaped base, and fixing plates are fixedly arranged at the tops of the supporting plates. The outer wall of the fixing plate is sleeved with a lifting circular plate in vertical sliding connection with the fixing plate, a fixing cylinder is fixedly arranged at the top of the lifting circular plate, and a plurality of through mounting grooves are evenly distributed in the outer wall of the fixing cylinder in the circumferential direction. The problem that an existing dry-type transformer winding is tedious in disassembling and repairing procedures is solved; and the dismounting and moving process is complex.

Description

Technical Field

[0001] The present invention relates to the technical field of dry-type transformers, in particular to a combined connection type transformer for a booster station. Background Art

[0002] A dry-type transformer is a power transformer that does not use liquid insulating media (such as oil) but relies on air, epoxy resin or other solid materials for insulation and heat dissipation. Its core structure consists of an iron core and windings. The windings are usually wrapped in high-temperature resistant insulating materials using a vacuum pressure impregnation or casting process. It has advantages such as fire resistance, explosion resistance, and environmental protection. It has low noise during operation and is suitable for places with high safety requirements, such as indoor booster stations and high-rise buildings.

[0003] The existing dry-type transformers have gradually exposed their shortcomings during use, mainly in the following aspects: First, the winding disassembly and repair process is cumbersome. Specifically, existing dry-type transformers use an iron core structure consisting of upper and lower iron yokes, both of which are stacked with multiple layers of silicon steel sheets. During assembly, the high- and low-voltage windings must first be placed on the lower iron yoke. Then, the silicon steel sheets are inserted one by one into the top opening of the lower iron yoke to form the upper iron yoke. To enhance the overall mechanical strength of the iron core and prevent the vibration generated during operation of the dry-type transformer from loosening the connection between the upper and lower iron yokes, the silicon steel sheets of the upper and lower iron yokes are assembled using a staggered insertion process. This assembly process must be completed manually piece by piece. After all the silicon steel sheets are inserted and fixed in place, the dry-type transformer is fully assembled. During long-term operation, the insulation material between the windings is continuously subjected to multiple factors such as electrical stress, thermal aging, and mechanical vibration. This can degrade the insulation performance and pose a risk of short circuits. Therefore, regular disassembly and maintenance are necessary. Due to the staggered lamination structure of the upper and lower iron yokes, maintenance requires disassembly one by one in the reverse direction. After maintenance, the above assembly process is repeated. This makes the entire maintenance process complex, time-consuming, and labor-intensive, affecting maintenance efficiency.

[0004] Second, the removal process of dry-type transformers is complicated. Specifically, existing dry-type transformers are usually installed in sealed transformer boxes to reduce the impact of dust. Their fixed installation method means that during maintenance, the fixed connection between the transformer and the box must be released first, and then heavy equipment such as forklifts must be used to move the entire transformer out of the box before subsequent maintenance work can be carried out. This removal process involves the operation of large equipment and the steps are cumbersome, which significantly increases the difficulty of maintenance.

[0005] In summary, the existing technology has obvious inconveniences and defects in actual use, so it is necessary to improve it. Summary of the Invention

[0006] In view of the defects in the prior art, the technical problem to be solved by the present invention is to provide a combined connection type transformer for a booster station. The upper and lower iron yokes of the dry-type transformer iron core are both integrated structures. When assembling the iron core, the upper iron yoke can be quickly and accurately inserted into the lower iron yoke, and the upper iron yoke after insertion is limited, which effectively prevents the connection between the upper and lower iron yokes from loosening during operation, thereby improving the stability of the iron core structure. When disassembling the iron core, the upper iron yoke and the lower iron yoke can be quickly separated, which greatly simplifies the iron core disassembly process when disassembling the dry-type transformer winding and improves the maintenance efficiency. The dry-type transformer adopts a movable installation design, which allows it to be quickly moved outside the box for maintenance without disconnecting it from the transformer box, simplifying the transformer transfer process and improving the convenience of transformer maintenance.

[0007] In order to solve the above problems, the present invention provides the following technical solutions: A combined connection type transformer for a step-up station, comprising a transformer box, a box door hinged at the open end of the transformer box, a receiving groove extending through the bottom of the transformer box, a U-shaped base horizontally slidably connected to the transformer box provided in the receiving groove, two lower clamps detachably provided on the top of the U-shaped base, a lower iron yoke detachably connected thereto provided between the two lower clamps, two upper clamps provided above the U-shaped base, an upper iron yoke detachably connected thereto provided between the two upper clamps, the upper iron yoke being plugged into the lower iron yoke, and support plates fixedly provided at the four corners of the top of the U-shaped base The top of the support plate is fixed with a fixed plate, and the outer wall of the fixed plate is provided with a lifting circular plate vertically slidingly connected thereto, and the top of the lifting circular plate is fixed with a fixed cylinder, and the outer wall of the fixed cylinder is uniformly distributed along the circumference thereof and has a plurality of mounting grooves penetrating therethrough, and a sliding plate horizontally slidingly connected to the fixed cylinder is provided in the mounting groove, and a plurality of plug plates are fixed to the end of the sliding plate, and the ends of the upper clamps are provided with two detachable connecting cylinders, the connecting cylinders are sleeved on the outside of the fixed cylinder and abut against the lifting circular plate, and the inner wall of the connecting cylinder is provided with a plurality of slots, and the plug plates are inserted into the slots; When the lifting circular plate slides downward, the upper iron yoke moves downward, and the sliding plate slides outward at the same time. The plug-in plate contacts the connecting tube and adjusts the position of the upper iron yoke. When the upper iron yoke and the lower iron yoke are completely inserted, the plug-in plate is inserted into the slot and limits the upper iron yoke to prevent the connection between the upper iron yoke and the lower iron yoke from loosening.

[0008] As an optimized solution, the upper iron yoke and the lower iron yoke are both composed of several silicon steel sheets, the top of the silicon steel sheet in the lower iron yoke is provided with a V-shaped groove, and the bottom of the silicon steel sheet in the upper iron yoke is arranged in a conformal manner.

[0009] As an optimized solution, the upper clamp and the lower clamp are both detachably connected to the silicon steel sheets via fixing bolts, and the upper ends of the silicon steel sheets in the lower iron yoke are tightened and fixed by tightening bolts.

[0010] As an optimized solution, a plurality of casters are fixedly provided on the bottom of the U-shaped base, two driving telescopic cylinders are fixedly provided on the inner wall of the accommodating groove, and the telescopic ends of the driving telescopic cylinders are fixedly connected to the U-shaped base.

[0011] As an optimized solution, three low-voltage windings are provided on the outer side of the lower iron yoke, and a high-voltage winding is provided on the outer side of the low-voltage winding. Several detachable pads are provided at the bottom of the upper clamp and the top of the lower clamp, and the top and bottom of the high-voltage winding and the low-voltage winding are both against the pads.

[0012] As an optimized solution, a plurality of high-voltage terminals are installed on the top of one of the upper clamps, and the high-voltage terminals are connected to the high-voltage winding through a high-voltage connecting rod. A plurality of hanging rings are fixed on the top of the upper clamp.

[0013] As an optimized solution, the upper end of the fixed plate is detachably provided with several fixed wedge blocks, and the end of the sliding plate is detachably provided with a driven wedge block, and the inclined end of the fixed wedge block is slidably connected to the inclined end of the driven wedge block.

[0014] As an optimized solution, the upper inner part and the lower inner part of the support plate are respectively provided with an upper built-in groove and a lower built-in groove, and the upper built-in groove is provided with a lifting plate vertically slidably connected to the support plate, and a plurality of connecting rods are fixed on the top of the lifting plate. The top end of the connecting rod extends upward to the outside and is fixedly connected to the lifting circular plate, and the connecting rod is slidably connected to the support plate.

[0015] As an optimized solution, a rotating shaft is rotatably provided at the bottom of the upper built-in groove, the top of the rotating shaft passes through the lifting plate upward and is rotatably connected to the support plate, a screw segment is provided on the outer wall of the rotating shaft, and the lifting plate is threadedly connected to the screw segment on the rotating shaft.

[0016] As an optimized solution, a built-in motor is fixedly provided on the top of the lower built-in groove, and the bottom end of the rotating shaft extends downward and is fixedly connected to the output shaft of the built-in motor.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. When removing the transformer, open the box door, drive the telescopic cylinder to slide the U-shaped base outward, and then move the transformer outside the transformer box. The casters provide support for the U-shaped base and facilitate the pushing out of the U-shaped base. The dry-type transformer adopts a movable installation design. It can be quickly moved outside the box for maintenance without disconnecting from the transformer box, which simplifies the transformer transfer process and improves the convenience of transformer maintenance. 2. When the U-shaped base is located inside the transformer box, one end of the U-shaped base abuts against the inner wall of the transformer box. When the box door is closed, the box door seals the open end of the transformer box, and the box door abuts against the other end of the U-shaped base. The opposite side wall of the U-shaped base is slidably connected to the transformer box. Therefore, the interior of the transformer box is a closed space, which can reduce the entry of dust. The transformer is not only easy to remove for maintenance, but also has an excellent sealing effect, which improves practicality. 3. When dismantling and repairing the high-voltage winding and the low-voltage winding, first remove the high-voltage connecting rod, and then the built-in motor drives the rotating shaft to rotate, thereby driving the lifting plate to slide upward. Driven by the connecting rod, the lifting circular plate, the fixed cylinder and the connecting cylinder move upward, thereby driving the upper iron yoke to move upward and separate from the lower iron yoke. When the lifting circular plate moves upward, the driven wedge block drives the sliding plate to slide inward, and the plug-in plate is disengaged from the slot, thereby releasing the restriction on the connecting cylinder. At this time, use equipment such as an overhead crane to lift the upper iron yoke through the lifting ring, and then lift the high-voltage winding and the low-voltage winding out for maintenance in turn. After the maintenance is completed, lift the high-voltage winding and the low-voltage winding to the lower iron yoke in turn, and then lift the upper iron yoke so that the connecting cylinder is sleeved on the outside of the fixed cylinder and against the lifting circular plate. The built-in motor drives the lifting circular plate to slide downward, and the upper iron yoke moves downward. When the upper and lower yokes are assembled, the plug-in plate is inserted into the slot and the upper yoke is limited to prevent loosening of the connection between the upper and lower yokes. The upper and lower yokes of the transformer core are both integrated structures. When the core is assembled, the upper yoke can be quickly and accurately plugged into the lower yoke, and the upper yoke after insertion is limited, which effectively prevents the connection between the upper and lower yokes from loosening during operation, thereby improving the stability of the core structure. When the core is disassembled, the upper and lower yokes can be quickly separated, which greatly simplifies the core decomposition process during the disassembly and repair of the dry-type transformer winding, and improves the maintenance efficiency. 4. The pads on the upper and lower clamps can better clamp and limit the high-voltage winding and the low-voltage winding, and the pads on the lower clamp can facilitate the passage of the lifting rope through the high-voltage winding and the low-voltage winding, thereby improving the convenience of the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the transformer box of the present invention; Figure 3 Schematic diagram of the structure of the upper iron yoke and the lower iron yoke of the present invention; Figure 4 This is a schematic diagram of the structure inside the support plate of the present invention; Figure 5 This is a schematic diagram of the structure inside the fixed cylinder of the present invention; Figure 6 Schematic diagram of the structure of the silicon steel sheet of the present invention; Figure 7 This is a schematic structural diagram of the bottom of the U-shaped base of the present invention; Figure 8 It is a schematic diagram of the structure between the upper clamping member and the lower clamping member of the present invention; Figure 9 This is a schematic diagram of the structure of the fixed wedge block of the present invention; Figure 10 It is a structural schematic diagram of the driven wedge block of the present invention.

[0020] In the figure: 1-transformer box; 2-box door; 3-accommodating groove; 4-U-shaped base; 5-lower clamp; 6-support plate; 7-upper clamp; 8-lifting ring; 9-connecting cylinder; 10-high-voltage terminal; 11-high-voltage winding; 12-low-voltage winding; 13-high-voltage connecting rod; 14-spacer; 15-lower iron yoke; 16-upper iron yoke; 17-fixing bolt; 18-tightening bolt; 19-silicon steel sheet; 20-V-groove; 21-built-in motor; 22-rotating shaft; 23-lifting plate; 24-screw segment; 25-connecting rod; 26-lifting circular plate; 27-fixing cylinder; 28-fixing plate; 29-upper built-in groove; 30-lower built-in groove; 31-insertion plate; 32-sliding plate; 33-driven wedge block; 34-fixed wedge block; 35-slot; 36-mounting groove; 37-castor; 38-driving telescopic cylinder. DETAILED DESCRIPTION

[0021] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0022] like Figures 1 to 10As shown, a combined connection type booster station transformer includes a transformer box 1, a box door 2 is hinged at the open end of the transformer box 1, a receiving groove 3 is provided at the bottom of the transformer box 1, a U-shaped base 4 is provided in the receiving groove 3 and is horizontally slidably connected to the transformer box 1, two lower clamps 5 are detachably provided on the top of the U-shaped base 4, a lower iron yoke 15 detachably connected to the two lower clamps 5 is provided between the two lower clamps 5, two upper clamps 7 are provided above the U-shaped base 4, an upper iron yoke 16 detachably connected to the two upper clamps 7 is provided between the two upper clamps 7, the upper iron yoke 16 is plugged into the lower iron yoke 15, and support plates 6 are fixed at the four corners of the top of the U-shaped base 4. A fixed plate 28 is fixed on the top, and a lifting circular plate 26 is sleeved on the outer wall of the fixed plate 28 and connected to it in a vertical sliding manner. A fixed cylinder 27 is fixed on the top of the lifting circular plate 26. A plurality of mounting grooves 36 are uniformly distributed along the circumference of the outer wall of the fixed cylinder 27. A sliding plate 32 is provided in the mounting groove 36 and connected to the fixed cylinder 27 in a horizontal sliding manner. A plurality of plug plates 31 are fixed to the ends of the sliding plate 32. Two detachable connecting cylinders 9 are provided on the ends of the upper clamp 7. The connecting cylinder 9 is sleeved on the outside of the fixed cylinder 27 and abuts against the lifting circular plate 26. A plurality of slots 35 are provided on the inner wall of the connecting cylinder 9, and the plug plates 31 are inserted into the slots 35. When the lifting circular plate 26 slides downward, the upper iron yoke 16 moves downward, and the sliding plate 32 slides outward at the same time. The plug-in plate 31 contacts the connecting tube 9 and adjusts the position of the upper iron yoke 16. When the upper iron yoke 16 and the lower iron yoke 15 are completed, the plug-in plate 31 is inserted into the slot 35 and limits the upper iron yoke 16 to prevent the connection between the upper iron yoke 16 and the lower iron yoke 15 from loosening.

[0023] The upper iron yoke 16 and the lower iron yoke 15 are both composed of a plurality of silicon steel sheets 19 . The top of the silicon steel sheet 19 in the lower iron yoke 15 is provided with a V-shaped groove 20 , and the bottom of the silicon steel sheet 19 in the upper iron yoke 16 is provided with a V-shaped groove 20 .

[0024] The upper clamp 7 and the lower clamp 5 are both detachably connected to the silicon steel sheets 19 via fixing bolts 17 , and the upper ends of the silicon steel sheets 19 in the lower iron yoke 15 are tightened and fixed by tightening bolts 18 .

[0025] A plurality of casters 37 are fixedly provided at the bottom of the U-shaped base 4 , and two driving telescopic cylinders 38 are fixedly provided on the inner wall of the accommodating groove 3 , and the telescopic ends of the driving telescopic cylinders 38 are fixedly connected to the U-shaped base 4 .

[0026] Three low-voltage windings 12 are sleeved on the outside of the lower iron yoke 15, and a high-voltage winding 11 is sleeved on the outside of the low-voltage winding 12. Several detachable pads 14 are provided at the bottom of the upper clamp 7 and the top of the lower clamp 5. The top and bottom of the high-voltage winding 11 and the low-voltage winding 12 are both against the pads 14.

[0027] A plurality of high-voltage terminals 10 are mounted on the top of one of the upper clamps 7 , and the high-voltage terminals 10 are connected to the high-voltage winding 11 via high-voltage connecting rods 13 .

[0028] A plurality of fixed wedge blocks 34 are detachably provided on the upper end of the fixed plate 28 , and a driven wedge block 33 is detachably provided on the end of the sliding plate 32 . The inclined ends of the fixed wedge blocks 34 are slidably connected to the inclined ends of the driven wedge blocks 33 .

[0029] The upper and lower interiors of the support plate 6 are respectively provided with an upper built-in groove 29 and a lower built-in groove 30. The upper built-in groove 29 is provided with a lifting plate 23 vertically slidably connected to the support plate 6. A number of connecting rods 25 are fixed on the top of the lifting plate 23. The top of the connecting rod 25 extends upward to the outside and is fixedly connected to the lifting circular plate 26. The connecting rod 25 is slidably connected to the support plate 6.

[0030] A rotating shaft 22 is rotatably provided at the bottom of the upper built-in groove 29. The top of the rotating shaft 22 passes through the lifting plate 23 upward and is rotatably connected to the support plate 6. A screw segment 24 is provided on the outer wall of the rotating shaft 22. The lifting plate 23 is threadedly connected to the screw segment 24 on the rotating shaft 22.

[0031] A built-in motor 21 is fixedly installed on the top of the lower built-in tank 30 , and the bottom end of the rotating shaft 22 extends downward and is fixedly connected to the output shaft of the built-in motor 21 .

[0032] A plurality of hanging rings 8 are fixedly provided on the top of the upper clamp 7 .

[0033] The slot 35 has a trapezoidal structure in longitudinal section, and the inserting plate 31 is arranged in accordance with the shape.

[0034] The working principle of this device is: When the transformer is removed, the door 2 is opened, and the telescopic cylinder 38 is driven to slide the U-shaped base 4 outward, thereby moving the transformer to the outside of the transformer box 1. The casters 37 provide support for the U-shaped base 4 and facilitate the pushing out of the U-shaped base 4. The dry-type transformer adopts a movable installation design and can be quickly moved to the outside of the box for maintenance without disconnecting it from the transformer box 1, which simplifies the transformer transfer process and improves the convenience of transformer maintenance. When the U-shaped base 4 is located inside the transformer box 1, one end of the U-shaped base 4 abuts against the inner wall of the transformer box 1. When the box door 2 is closed, the box door 2 seals the open end of the transformer box 1, and the box door 2 abuts against the other end of the U-shaped base 4. The opposite side wall of the U-shaped base 4 is slidably connected to the transformer box 1. Therefore, the interior of the transformer box 1 is a closed space, which can reduce the entry of dust. The transformer is not only easy to remove for maintenance, but also has an excellent sealing effect, thereby improving practicality. When the high-voltage winding 11 and the low-voltage winding 12 are dismantled and repaired, the high-voltage connecting rod 13 is first disassembled, and then the built-in motor 21 drives the rotating shaft 22 to rotate, thereby driving the lifting plate 23 to slide upward. Driven by the connecting rod 25, the lifting circular plate 26, the fixed cylinder 27 and the connecting cylinder 9 move upward, thereby driving the upper iron yoke 16 to move upward and separate from the lower iron yoke 15. When the lifting circular plate 26 moves upward, the driven wedge block 33 drives the sliding plate 32 to slide inward, and the plug plate 31 disengages from the slot 35, thereby releasing the restriction on the connecting cylinder 9. At this time, use equipment such as an overhead crane to lift the upper iron yoke 16 through the lifting ring 8, and then lift the high-voltage winding 11 and the low-voltage winding 12 out for maintenance in turn. After the maintenance is completed, the high-voltage winding 11 and the low-voltage winding 12 are lifted to the lower iron yoke 15 in turn, and then the upper iron yoke 16 is lifted so that the connecting cylinder 9 is sleeved on the outside of the fixed cylinder 27 and against the lifting circular plate 26. The built-in motor 21 drives the lifting circular plate 26 to slide downward, and the upper The iron yoke 16 moves downward, and the sliding plate 32 slides outward at the same time. The inserting plate 31 contacts the connecting tube 9 and adjusts the position of the upper iron yoke 16 to prevent the bottom tip of the silicon steel sheet 19 in the upper iron yoke 16 from colliding with the silicon steel sheet 19 in the lower iron yoke 15 during the insertion process, causing damage. When the upper iron yoke 16 and the lower iron yoke 15 are inserted into the insertion slot 35, the inserting plate 31 is inserted into the slot 35 and limits the upper iron yoke 16 to prevent the connection between the upper iron yoke 16 and the lower iron yoke 15 from loosening. The upper iron yoke 16 and the lower iron yoke 15 of the core are both integrated structures. When assembling the iron core, the upper iron yoke 16 can be quickly and accurately inserted into the lower iron yoke 15, and the upper iron yoke 16 after insertion is limited, which effectively prevents the connection between the upper iron yoke 16 and the lower iron yoke 15 from loosening during operation, thereby improving the stability of the iron core structure. When disassembling the iron core, the upper iron yoke 16 and the lower iron yoke 15 can be quickly separated, which greatly simplifies the iron core disassembly process during the disassembly and repair of the dry-type transformer winding and improves the maintenance efficiency; The pads 14 on the upper clamp 7 and the lower clamp 5 can better clamp and limit the high-voltage winding 11 and the low-voltage winding 12, and the pads 14 on the lower clamp 5 can facilitate the passage of the lifting rope through the high-voltage winding 11 and the low-voltage winding 12, thereby improving the convenience of the lifting process.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A combined connection type booster station transformer, characterized by: The utility model comprises a transformer box (1), wherein an opening end of the transformer box (1) is hingedly connected to a box door (2), a bottom of the transformer box (1) is provided with a receiving groove (3), a U-shaped base (4) horizontally slidably connected to the transformer box (1) is provided in the receiving groove (3), the top of the U-shaped base (4) is detachably provided with two lower clamps (5), a lower iron yoke (15) detachably connected to the lower clamps (5) is provided between the two lower clamps (5), two upper clamps (7) are provided above the U-shaped base (4), an upper iron yoke (16) detachably connected to the upper clamps (7) is provided between the two upper clamps (7), the upper iron yoke (16) is plugged into the lower iron yoke (15), support plates (6) are fixedly provided at the four corners of the top of the U-shaped base (4), and a fixed support plate (6) is fixedly provided on the top of the support plate (6). Plate (28), the outer wall of the fixed plate (28) is sleeved with a lifting circular plate (26) connected to the fixed plate (28) in a vertical sliding manner, the top of the lifting circular plate (26) is fixed with a fixed cylinder (27), the outer wall of the fixed cylinder (27) is uniformly distributed with a plurality of installation grooves (36) arranged therethrough along the circumferential direction, a sliding plate (32) is arranged in the installation groove (36) and is horizontally slidably connected to the fixed cylinder (27), a plurality of plug plates (31) are fixed at the end of the sliding plate (32), and two detachable connecting cylinders (9) are provided at the end of the upper clamp (7), the connecting cylinder (9) is sleeved on the outside of the fixed cylinder (27) and abuts against the lifting circular plate (26), the inner wall of the connecting cylinder (9) is provided with a plurality of slots (35), and the plug plates (31) are inserted into the slots (35); When the lifting circular plate (26) slides downward, the upper iron yoke (16) moves downward, and at the same time, the sliding plate (32) slides outward, and the plug plate (31) contacts the connecting tube (9) and adjusts the position of the upper iron yoke (16). When the upper iron yoke (16) and the lower iron yoke (15) are inserted into the slot (35) and limits the upper iron yoke (16) to prevent the connection between the upper iron yoke (16) and the lower iron yoke (15) from loosening.

2. The combined connection type booster station transformer according to claim 1, characterized in that: The upper iron yoke (16) and the lower iron yoke (15) are both composed of a plurality of silicon steel sheets (19), the top of the silicon steel sheet (19) in the lower iron yoke (15) is provided with a V-shaped groove (20), and the bottom of the silicon steel sheet (19) in the upper iron yoke (16) is arranged in a conformal manner.

3. The combined connection type booster station transformer according to claim 2, characterized in that: The upper clamp (7) and the lower clamp (5) are both detachably connected to the silicon steel sheets (19) via fixing bolts (17), and the upper ends of the silicon steel sheets (19) in the lower iron yoke (15) are tightened and fixed via tightening bolts (18).

4. The combined connection type booster station transformer according to claim 1, characterized in that: A plurality of casters (37) are fixedly provided on the bottom of the U-shaped base (4), and two driving telescopic cylinders (38) are fixedly provided on the inner wall of the accommodating groove (3), wherein the telescopic ends of the driving telescopic cylinders (38) are fixedly connected to the U-shaped base (4).

5. The combined connection type booster station transformer according to claim 1, characterized in that: The lower iron yoke (15) is provided with three low-voltage windings (12) on the outside, and the low-voltage winding (12) is provided with a high-voltage winding (11) on the outside. The bottom of the upper clamp (7) and the top of the lower clamp (5) are provided with a plurality of detachable pads (14), and the tops and bottoms of the high-voltage winding (11) and the low-voltage winding (12) are both against the pads (14).

6. The combined connection type booster station transformer according to claim 5, characterized in that: A plurality of high-voltage terminals (10) are installed on the top of one of the upper clamps (7), and the high-voltage terminals (10) are connected to the high-voltage winding (11) via a high-voltage connecting rod (13). A plurality of hanging rings (8) are fixed on the top of the upper clamp (7).

7. The combined connection type booster station transformer according to claim 1, characterized in that: The upper end of the fixed plate (28) is detachably provided with a plurality of fixed wedge blocks (34), and the end of the sliding plate (32) is detachably provided with a driven wedge block (33), and the inclined surface end of the fixed wedge block (34) is slidably connected to the inclined surface end of the driven wedge block (33).

8. The combined connection type booster station transformer according to claim 1, characterized in that: An upper built-in groove (29) and a lower built-in groove (30) are respectively provided in the upper inner portion and the lower inner portion of the support plate (6). A lifting plate (23) vertically slidably connected to the support plate (6) is provided in the upper built-in groove (29). A plurality of connecting rods (25) are fixedly provided on the top of the lifting plate (23). The top ends of the connecting rods (25) extend upward to the outside and are fixedly connected to the lifting circular plate (26). The connecting rods (25) are slidably connected to the support plate (6).

9. The combined connection type booster station transformer according to claim 8, characterized in that: A rotating shaft (22) is rotatably provided at the bottom of the upper built-in groove (29), the top end of the rotating shaft (22) upwardly penetrates the lifting plate (23) and is rotatably connected to the support plate (6), a screw rod segment (24) is provided on the outer wall of the rotating shaft (22), and the lifting plate (23) is threadedly connected to the screw rod segment (24) on the rotating shaft (22).

10. The combined connection type booster station transformer according to claim 9, characterized in that: A built-in motor (21) is fixedly provided on the top of the lower built-in groove (30), and the bottom end of the rotating shaft (22) extends downward and is fixedly connected to the output shaft of the built-in motor (21).

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