Energy-saving dry-type transformer for energy storage power station

Abstract

The invention relates to the technical field of transformers, in particular to an energy-saving dry-type transformer for an energy storage power station, which comprises a base, an iron core, a lower supporting plate, low-voltage windings, high-voltage windings, an upper supporting plate and a heat dissipation fan, the low-voltage windings are coaxially sleeved with the high-voltage windings, a heat dissipation gap is reserved between each low-voltage winding and the corresponding high-voltage winding, and the energy-saving dry-type transformer further comprises a locking disc, each iron core is sleeved with a locking disc, the locking discs are horizontally and fixedly installed on the lower supporting plate, the high-voltage winding and the low-voltage winding are both placed on the locking discs, and the locking discs are further provided with clamping assemblies used for locking the high-voltage winding and the low-voltage winding. By arranging the clamping assembly, the low-voltage winding and the high-voltage winding can be rapidly clamped to the locking disc during installation, rapid positioning and installation between the low-voltage winding and the high-voltage winding are facilitated, and compared with traditional bolt positioning and installation, the installation speed of the whole dry-type transformer is increased.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, and in particular to an energy-saving dry-type transformer for an energy storage power station. Background Art

[0002] A dry-type transformer is a transformer whose core and windings are not immersed in insulating oil. Dry-type transformers usually include low-voltage windings and high-voltage windings, which are usually encapsulated with insulating materials in dry-type transformers. The encapsulated low-voltage windings and high-voltage windings have high mechanical strength and excellent moisture and dust resistance. Therefore, dry-type transformers are widely used in urban power grids, especially in places with high fire prevention and safety requirements.

[0003] Existing dry-type transformers are often inconvenient to quickly fix and disassemble during transportation or assembly, and the fixing structure is often unstable, making it inconvenient to transport and later disassemble and maintain.

[0004] In order to solve the problem that the existing dry-type transformers are inconvenient to fix and disassemble quickly, the Chinese invention patent with application number: CN202110471123.3 and titled "A detachable dry-type transformer and its insulation layer structure" proposes a solution, including a transformer assembly, an upper bracket, a lower bracket and an insulation layer. The transformer assembly includes an iron core column and a coil. The outer side of the iron core column is sleeved with an inner shell, the coil is sleeved on the outer side of the inner shell, and the outer side of the coil is sleeved with an outer shell. The outer shell and the inner shell are both tubular structures. A first insulating pad is fixed to the inner side of the top of the outer shell. The inner A second insulating pad is fixed to the outside of the bottom of the shell, the first insulating pad and the second insulating pad are respectively arranged at the upper and lower ends of the coil, the insulating layer is coated on the outside of the coil, the first insulating pad is connected to the top outer wall of the inner shell through a threaded structure, the second insulating pad is connected to the bottom inner wall of the outer shell through a threaded structure, the bottom of the core column is fixed with a fixing seat, the fixing seat is fixed to the lower bracket by bolts, the top of the outer shell is provided with a locking ring, the cross-section of the locking ring is an N-shaped structure, and the inner and outer walls of the locking ring are respectively connected to the outer shell and the top of the inner shell through threads. By setting threads on the first insulating pad and the second insulating pad and connecting the inner and outer shells through threads, it is achieved that each part of the transformer assembly can be disassembled and replaced separately, which improves the convenience of installation, disassembly and maintenance of the dry-type transformer.

[0005] However, the above invention patent adopts the method of opening threads on the inner and outer shells for connection, which requires the inner and outer shells to be rotated during installation. Dry-type transformers are generally large-scale equipment, and it is difficult to rotate the threads of the inner and outer shells to engage. The installation convenience and efficiency of dry-type transformers need to be further improved. In addition, the first insulating pad and the second insulating pad in the above invention close the gap between the inner and outer shells, which will make the heat dissipation effect of the dry-type transformer worse.

[0006] To this end, an energy-saving dry-type transformer for an energy storage power station is proposed to further improve the installation convenience of the dry-type transformer and improve the installation efficiency of the dry-type transformer. Summary of the invention

[0007] The object of the present invention is to provide an energy-saving dry-type transformer for an energy storage power station, so as to solve the problems of difficult installation and low installation efficiency of dry-type transformers mentioned in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] An energy-saving dry-type transformer for an energy storage power station comprises: a base, an iron core, a lower support plate, a low-voltage winding, a high-voltage winding, an upper support plate and a heat dissipation fan, wherein the base is fixedly installed on the ground, the iron cores are three, and the iron cores are vertically installed on the base at intervals, the lower support plates are two, and the two lower support plates are fixedly installed on the base and used to clamp the lower side of the iron core, the low-voltage winding is cylindrical, each of the iron cores is sleeved with a low-voltage winding, each of the low-voltage windings is coaxially sleeved with a high-voltage winding, and each A heat dissipation gap is left between the low-voltage winding and the high-voltage winding. There are two upper support plates, which are used to clamp the upper side of the iron core. There are six heat dissipation fans, and two heat dissipation fans are arranged on the base under each high-voltage winding. It also includes a locking plate, and each iron core is provided with a locking plate, and the locking plate is horizontally fixed on the lower support plate. The high-voltage winding and the low-voltage winding are both placed on the locking plate, and the locking plate is also provided with a clamping assembly for locking the high-voltage winding and the low-voltage winding.

[0010] The clamping assembly includes a first clamping groove on the locking disk that matches the low-voltage winding, the first clamping groove is an annular clamping groove, the first clamping groove is used to clamp the bottom of the low-voltage winding, the locking disk is also provided with a plurality of first locking grooves, the plurality of first locking grooves are evenly distributed on the locking disk, a first locking block is rotatably installed inside the first locking groove, a first torsion spring is provided inside the first locking groove, the first torsion spring is used to keep the first locking block vertical to the locking disk, a raised first hook portion is provided on the first locking block, a plurality of first grooves are provided on the outer wall of the low-voltage winding corresponding to the plurality of first locking grooves, the first hook portion is clamped into the first groove to lock the low-voltage winding; The clamping assembly also includes a second clamping groove on the locking disk that matches the high-voltage winding. The second clamping groove is an annular clamping groove. The second clamping groove is used to clamp the bottom of the high-voltage winding. The locking disk is also provided with a plurality of second locking grooves. The plurality of second locking grooves are evenly distributed on the locking disk. A second locking block is rotatably installed inside the second locking groove. A second torsion spring is provided inside the second locking groove. The second torsion spring is used to keep the second locking block perpendicular to the locking disk. A protruding second hook portion is provided on the second locking block. A plurality of second grooves are provided on the outer wall of the high-voltage winding corresponding to the plurality of second locking grooves. The second hook portion is inserted into the second groove to lock the high-voltage winding.

[0011] By setting a snap-on assembly, the low-voltage winding and the high-voltage winding are installed by snap-on means. It is only necessary to place the low-voltage winding and the high-voltage winding on the locking disk, and insert the first hook portion on the first locking block into the first groove on the low-voltage winding, and insert the second hook portion on the second locking block into the second groove on the high-voltage winding to complete the installation. After installation, the low-voltage winding and the high-voltage winding cannot move in the vertical and horizontal directions, nor can they rotate, and are completely fixed. Compared with installing the compression winding and the high-voltage winding with bolts or threads, there is no need to frequently rotate the low-voltage winding and the high-voltage winding, nor to repeatedly tighten multiple bolts, which greatly simplifies the installation steps and convenience of the low-voltage winding and the high-voltage winding, thereby improving the installation efficiency of the entire dry-type transformer.

[0012] Preferably, a first threaded portion is provided on the outer wall of the low-voltage winding, a first locking ring is threadedly connected to the first threaded portion, the first locking ring is trumpet-shaped, and the large mouth of the trumpet-shaped first locking ring faces downward; a second threaded portion is provided on the outer wall of the high-voltage winding, a second locking ring is provided on the second threaded portion, the second locking ring is trumpet-shaped, and the large mouth of the trumpet-shaped first locking ring faces downward.

[0013] The first locking ring moves downward along the threaded engagement of the first threaded portion, and the bell-shaped first locking ring wraps and squeezes the first locking block to prevent the first locking block from rotating away from the core, thereby ensuring that the low-voltage winding is firmly locked by the first locking block.

[0014] The second locking ring is the same as the first locking ring. It moves downward along the threaded engagement of the second threaded portion. The bell-shaped second locking ring wraps and squeezes the second locking block to prevent the second locking block from rotating away from the iron core, thereby ensuring that the high-voltage winding is firmly locked by the second locking block.

[0015] By squeezing the first locking block and the second locking block respectively through the first locking ring and the second locking ring, it can be ensured that the first locking block and the second locking block will not loosen due to vibration during the use of the transformer, further ensuring the stability of the use of the dry-type transformer. The first locking ring and the second locking ring are respectively arranged on the outside of the low-voltage winding and the high-voltage winding through threads. They are small in size and have strong visibility. There is no need to rotate the entire low-voltage winding or the high-voltage winding, which is convenient for employees to operate. In addition, you only need to rotate a first locking ring to lock all the first locking blocks, which is convenient and quick. The second locking ring can also lock multiple second locking blocks at the same time.

[0016] Preferably, the locking disk is provided with a plurality of vents corresponding to the heat dissipation gap, and the vents all penetrate the locking disk, and the plurality of vents are evenly distributed on the locking disk. The vents ensure that the wind blown by the heat dissipation fan can enter the heat dissipation gap to dissipate heat for the low-voltage winding and the high-voltage winding, thereby ensuring the heat dissipation and operation stability of the low-voltage winding and the high-voltage winding.

[0017] Preferably, a collar is fixedly installed above the first locking ring, and a plurality of positioning rods are rotatably arranged around the collar, and the positioning rods are all made of rubber material, and the circumference of the plurality of positioning rods is evenly distributed on the collar, and the positioning rods can swing up and down along the vertical direction, and the collar is also provided with a third torsion spring for keeping the positioning rod perpendicular to the low-voltage winding. The positioning rods are of equal length, and through the third torsion spring of the same specification and the same elastic force, after the low-voltage winding is installed, when the high-voltage winding is sleeved from top to bottom on the outside of the low-voltage winding, the positioning rods evenly distributed on the low-voltage winding can help adjust the position of the high-voltage winding through the elastic force of the third torsion spring, so that the high-voltage winding is as concentric as possible with the low-voltage winding during the sleeve falling process. The staff only needs to fine-tune the high-voltage winding, which improves the convenience of the installation of the high-voltage winding, and thus saves the overall installation time of the dry-type transformer.

[0018] Preferably, the second locking ring is provided with an air gathering ring, which extends downward along the edge of the second locking ring to form a trumpet shape opening downward, and the second locking ring is provided with a plurality of acceleration ports evenly distributed on the circumference and penetrating the second locking ring.

[0019] The cooling fan blows air upwards, and although the airflow can flow along the outer wall of the high-voltage winding, a large part of the airflow is far away from the high-voltage winding, resulting in a waste of wind energy. After the wind gathering ring is set, the wind gathering ring gathers the airflow blown out by the cooling fan into the wind gathering ring as much as possible, and then pressurizes the airflow and blows it out from the acceleration port. Since the acceleration port is closer to the outer wall of the high-voltage winding, the accelerated airflow can take away the heat of the high-voltage winding as much as possible, thereby improving the utilization rate of wind energy. In addition, since the airflow is pressurized and accelerated, the heat dissipation efficiency of the high-voltage winding can also be improved, ensuring the stability of the use of the dry-type transformer.

[0020] Preferably, a rotating ring is rotatably mounted on the collar, the positioning rod is hinged on the rotating ring to be connected with the collar, the third torsion spring is arranged at the hinge position between the positioning rod and the rotating ring, and a baffle is arranged on the positioning rod. When the baffle is subjected to airflow from bottom to top, the baffle rotates around the low-voltage winding along the direction of rotation when the first locking ring moves downward. After starting, the heat dissipation fan will blow the airflow from bottom to top into the heat dissipation gap to dissipate the low-voltage winding. At this time, the airflow blown into the heat dissipation gap by the heat dissipation fan will blow the baffle. The baffle generates a horizontal component force after the airflow is affected and starts to drive the positioning rod to rotate around the low-voltage winding. When the positioning rod rotates, the end away from the low-voltage winding is close to the inner wall of the high-voltage winding, and the positioning rod can fine-tune the high-voltage winding under the action of centrifugal force to keep the high-voltage winding concentric with the low-voltage winding. At the same time, the baffle plate and the positioning rod are rotated around the low-voltage winding in the direction of engagement and rotation of the first threaded portion when the first locking ring moves downward, and the pre-tightening force of the first locking ring on the first locking block can be ensured through the frictional contact between the rotating ring and the sleeve ring, thereby preventing the first locking ring from loosening after long-term use, further improving the stability of the transformer.

[0021] Preferably, the tops of the first hook and the second hook are both provided with inclined guides, which are inclined downward toward the center of the first slot. The guides can guide the low-voltage winding and the high-voltage winding when the low-voltage winding or the high-voltage winding is plugged into the locking disk. When the low-voltage winding and the high-voltage winding are plugged in from top to bottom, the bottoms of the mortgage winding and the high-voltage winding can respectively squeeze the guides on the first hook and the second hook to allow the first locking block and the second locking block to rotate away from the iron core, further facilitating the installation of the low-voltage winding and the high-voltage winding.

[0022] Preferably, a ball is rotatably arranged on one end of the positioning rod away from the hinged end, and the ball is made of plastic material. The ball can improve the stability of the positioning rod when it rotates, and can also reduce the friction of the positioning rod on the inner wall of the high-voltage winding when it rotates, thereby avoiding the wear of the rubber package of the high-voltage winding.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The energy-saving dry-type transformer for energy storage power stations designed by the present invention can quickly clip the low-voltage winding and the high-voltage winding to the locking disk during installation by setting a snap-on assembly, which facilitates the rapid positioning and installation between the low-voltage winding and the high-voltage winding. Compared with the traditional positioning and installation with bolts, the installation speed of the entire dry-type transformer is improved, and multiple ventilation holes are opened on the locking disk to ensure the heat dissipation effect of the low-voltage winding and the high-voltage winding.

[0025] 2. An energy-saving dry-type transformer for an energy storage power station designed by the present invention is further provided with a trumpet-shaped first locking ring on the low-voltage winding, and a trumpet-shaped second locking ring on the high-voltage winding. The first locking ring and the second locking ring move downward through threaded engagement to respectively cover the first locking block and the second locking block, thereby preventing the first locking block and the second locking block from rotating in a direction away from the iron core, further avoiding loosening of the low-voltage winding and the high-voltage winding, and ensuring the stability of the dry-type transformer during use.

[0026] 3. The energy-saving dry-type transformer for energy storage power stations designed by the present invention is also provided with a positioning rod on the first locking ring, which is convenient for positioning and installation when the high-voltage winding is sleeved outside the low-voltage winding. In addition, a baffle is also provided on the positioning rod. When the heat dissipation fan dissipates heat from the low-voltage winding and the high-voltage winding from bottom to top, the wind blown by the heat dissipation fan will blow the baffle and drive the baffle and the positioning rod to rotate around the low-voltage winding to ensure the pre-tightening force of the first locking ring on the first locking block, and ensure the stability of the dry-type transformer when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 2 It is a front view of the present invention;

[0029] Figure 3 For the present invention Figure 1 The enlarged view of point A in the middle;

[0030] Figure 4 For the present invention Figure 2 Sectional view at the middle BB;

[0031] Figure 5 For the present invention Figure 4 Enlarged view of point C in the middle;

[0032] Figure 6 For the present invention Figure 4 The enlarged view of point D in the middle;

[0033] Figure 7It is a three-dimensional structural schematic diagram of the locking disk, the first locking block and the second locking block in the present invention;

[0034] Figure 8 It is a schematic diagram of the three-dimensional structure of the rotating ring, the positioning rod and the baffle plate in the present invention.

[0035] In the figure: 1, base; 2, iron core; 3, lower support plate; 4, low-voltage winding; 5, high-voltage winding; 6, upper support plate; 7, heat dissipation fan; 8, heat dissipation gap; 9, locking plate; 10, first slot; 11, first locking slot; 12, first locking block; 13, first torsion spring; 14, first hook portion; 15, first groove; 16, second slot; 17, second locking slot; 18, second locking block; 19, second torsion spring; 20, second hook portion; 21, second groove; 22, first threaded portion; 23, first locking ring; 24, second threaded portion; 25, second locking ring; 26, vent; 27, collar; 28, positioning rod; 29, third torsion spring; 30, air gathering ring; 31, acceleration port; 32, rotating ring; 33, baffle plate; 34, guide portion; 35, ball. DETAILED DESCRIPTION

[0036] See also Figures 1 to 8 The present invention provides an energy-saving dry-type transformer for an energy storage power station, and the technical solution is as follows:

[0037] refer to Figures 1 to 4 as well as Figure 7 An energy-saving dry-type transformer for energy storage power stations includes a base 1, an iron core 2, a lower support plate 3, a low-voltage winding 4, a high-voltage winding 5, an upper support plate 6, and a heat dissipation fan 7. The base 1 is fixedly installed on the ground. There are three iron cores 2, which are vertically installed on the base 1 at intervals. There are two lower support plates 3, which are fixedly installed on the base 1 and used to clamp the lower side of the iron core 2. The low-voltage winding 4 is cylindrical, and each iron core 2 is provided with a low-voltage winding 4, and each low-voltage winding 4 is provided with a high-voltage winding 5 coaxially, and a heat dissipation gap 8 is left between each low-voltage winding 4 and the high-voltage winding 5. There are two upper support plates 6, which are used to clamp the upper side of the iron core 2. There are six heat dissipation fans 7, and two heat dissipation fans 7 are provided on the base 1 below each high-voltage winding 5, and the two heat dissipation fans 7 are symmetrically arranged on both sides of the iron core 2, one in front and one behind. A plurality of ventilation openings 26 are provided on the locking disk 9 corresponding to the heat dissipation gap 8 . The ventilation openings 26 all penetrate the locking disk 9 , and the plurality of ventilation openings 26 are evenly distributed on the circumference of the locking disk 9 .

[0038] In addition, refer to Figures 4 to 7, and also includes a locking plate 9. Each iron core 2 is provided with a locking plate 9, and the locking plate 9 is horizontally fixedly installed on the lower support plate 3. The high-voltage winding 5 and the low-voltage winding 4 are both placed on the locking plate 9. The locking plate 9 is also provided with a clamping component for locking the high-voltage winding 5 and the low-voltage winding 4. The clamping assembly includes a first clamping groove 10 on the locking disk 9 that matches the low-voltage winding 4. The first clamping groove 10 is an annular clamping groove. The first clamping groove 10 is used to clamp the bottom of the low-voltage winding 4. The locking disk 9 is also provided with four first locking grooves 11. The four first locking grooves 11 are evenly distributed on the locking disk 9. A first locking block 12 is rotatably installed inside the first locking groove 11. A first torsion spring 13 is provided inside the first locking groove 11. The first torsion spring 13 is used to keep the first locking block 12 vertically with the locking disk 9. A raised first hook portion 14 is provided on the first locking block 12. Four first grooves 15 are provided on the outer wall of the low-voltage winding 4 corresponding to the four first locking grooves 11. The first groove 15 matches the first hook portion 14. A first threaded portion 22 is also provided on the outer wall of the low voltage winding 4 , and a first locking ring 23 is threadedly connected to the first threaded portion 22 . The first locking ring 23 is trumpet-shaped, and the large end of the trumpet-shaped first locking ring 23 faces downward.

[0039] refer to Figure 4 , Figure 6 and Figure 8 A collar 27 is fixedly installed above the first locking ring 23, and three positioning rods 28 are rotatably arranged around the collar 27. The positioning rods 28 are all made of rubber material. The three positioning rods 28 are evenly distributed on the collar 27. The positioning rods 28 can swing up and down along the vertical direction. A rotating ring 32 is also rotatably installed on the collar 27. The positioning rod 28 is hinged on the rotating ring 32 to connect with the collar 27. The third torsion spring 29 is arranged at the hinge position between the positioning rod 28 and the rotating ring 32. A baffle plate 33 is arranged on the positioning rod 28, and the baffle plate 33 is arranged obliquely. The obliquely arranged baffle plate 33 needs to ensure that when it is subjected to downward airflow, the baffle plate 33 will rotate around the low-voltage winding 4, and it needs to ensure that the rotation direction of the baffle plate 33 is the same as the rotation direction of the first locking ring 23 when it engages and moves downward on the first threaded portion 22. A ball 35 is rotatably arranged on the end of the positioning rod 28 away from the hinged end, and the ball 35 is made of plastic material.

[0040] refer to Figure 4 , Figure 5 and Figure 7The clamping assembly also includes a second clamping groove 16 on the locking disk 9 that matches the high-voltage winding 5. The second clamping groove 16 is an annular clamping groove. The second clamping groove 16 is used to clamp the bottom of the high-voltage winding 5. The locking disk 9 is also provided with four second locking grooves 17. The four second locking grooves 17 are evenly distributed on the locking disk 9. The second locking blocks 18 are rotatably installed inside the second locking grooves 17. The second torsion springs 19 are arranged inside the second locking grooves 17. The second torsion springs 19 are used to keep the second locking blocks 18 perpendicular to the locking disk 9. The second locking blocks 18 are provided with a raised second hook portion 20. Four second grooves 21 are provided on the outer wall of the high-voltage winding 5 corresponding to the four second locking grooves 17. The second grooves 21 match the second hook portion 20. A second threaded portion 24 is provided on the outer wall of the high-voltage winding 5. A second locking ring 25 is provided on the second threaded portion 24. The second locking ring 25 is horn-shaped, and the large end of the horn-shaped first locking ring 23 faces downward.

[0041] refer to Figures 1 to 5 The second locking ring 25 is provided with an air gathering ring 30 , which extends downward along the edge of the second locking ring 25 to form a trumpet shape opening downward. The second locking ring 25 is evenly distributed on the circumference with a plurality of acceleration ports 31 penetrating the second locking ring 25 .

[0042] In addition, refer to Figure 5 , Figure 6 and Figure 7 An inclined guide portion 34 is provided on the top of the first hook portion 14 and the second hook portion 20 , and the guide portion 34 is inclined downward toward the center of the first slot 10 .

[0043] When installing, refer to Figures 1 to 8First, the base 1 is fixed on the ground by bolts, and then the three cores 2 are fixed vertically on the base 1. Then, two lower support plates 3 are installed horizontally on the base 1 by bolts, and the two lower support plates 3 clamp the three cores 2 at the same time. After that, a locking plate 9 is installed from top to bottom on each core 2, and the locking plate 9 is fixed horizontally on the top of the lower support plate 3 by bolts. Then, the low-voltage winding 4 is installed on each core 2 from top to bottom by hoisting. When installing the low-voltage winding 4, the four first grooves 15 on the outer wall of the low-voltage winding 4 are aligned with the four first locking blocks 12 on the locking plate 9. During the descent of the low-voltage winding 4, the bottom of the low-voltage winding 4 is pressed against the guide portion 34 on the first hook portion 14. Under the guidance of the guide portion 34, the mortgage winding can simultaneously rotate the four first locking blocks 12 vertically downward in the direction away from the iron core 2 to avoid the four first locking blocks 12. After the four first locking blocks 12 are avoided, the low-voltage winding 4 can be smoothly placed on the locking disk 9. Then, the low-voltage winding 4 is fine-tuned to allow the bottom of the low-voltage winding 4 to be inserted into the first slot 10 of the locking ring. Finally, the first hook portions 14 on the four first locking blocks 12 on the locking disk 9 are automatically inserted into the four first grooves 15 on the low-voltage winding 4 under the elastic force of the first torsion spring 13 to lock the low-voltage winding 4.

[0044] Then, refer to Figure 4 and Figure 6 The installer rotates the first locking ring 23 on the low-voltage winding 4, allowing the first locking ring 23 to engage and move downward along the first threaded portion 22 until the inner ring of the first locking ring 23 abuts against the first locking block 12 and the first locking ring 23 can no longer move downward. At this time, the locking of the low-voltage winding 4 is completed.

[0045] After the low voltage winding 4 is installed, refer to Figure 4 and Figure 5, start to install the high-voltage winding 5. When installing the high-voltage winding 5, it is also hoisted from top to bottom like the low-voltage winding 4. After aligning the four second grooves 21 on the outer wall of the high-voltage winding 5 with the four second locking blocks 18 on the locking plate 9, let the high-voltage winding 5 be sleeved from top to bottom to the outside of the low-voltage winding 4. During the downward sleeve process, the bottom of the high-voltage winding 5 will press the positioning rod 28 on the low-voltage winding 4 downward, and the positioning rod 28 will rotate downward. At this time, the third torsion spring 29 on the low-voltage winding 4 will adjust the downward rotation angle of the positioning rod 28 through elastic force, and then adjust the position of the high-voltage winding 5 through elastic force, so that the high-voltage winding 5 is automatically concentric with the mortgage winding. After the adjustment of the positioning rod 28, the bottom of the high-voltage winding 5 can simultaneously abut the guide portion 34 on the second hook portion 20 during the descent process, and then as the high-voltage winding 5 continues to move downward, the bottom of the high-voltage winding 5 simultaneously squeezes the guide portions 34 on the four second hook portions 20, allowing the four second hook portions 20 and the four second locking blocks 18 to rotate and avoid in the direction away from the iron core 2 at the same time, and the high-voltage winding 5 can continue to move downward. Finally, the high-voltage winding 5 can fall into the second locking groove 17 under the positioning adjustment of the positioning rod 28, and the four second hook portions 20 are buckled into the second groove 21 on the high-voltage winding 5 under the action of the second torsion spring 19. Then, the second locking ring 25 on the outer wall of the high-voltage winding 5 is rotated, so that the second locking ring 25 is engaged and moved downward along the second threaded portion 24 until the second locking ring 25 can no longer move downward. At this time, the inner wall of the second locking ring 25 squeezes the four second locking blocks 18 in the direction of the iron core 2, and the four second locking blocks 18 are completely positioned and cannot move. At this point, the high-voltage winding 5 is fixed.

[0046] Finally, reference Figures 1 to 3 , set two upper support plates 6 parallel to the lower support plates 3 on the front and rear sides of the three iron cores 2, align the two upper support plates 6 and clamp the upper sides of the three iron cores 2, and finally fasten the two upper support plates 6 with bolts to complete the installation of the entire dry-type transformer.

[0047] When using, refer to Figure 4 The heat dissipation fan 7 blows air upward to dissipate heat from the low-voltage winding 4 and the high-voltage winding 5. Part of the airflow will be gathered by the air gathering ring 30 outside the high-voltage winding 5 when it moves upward, and the airflow gathered by the air gathering ring 30 will be pressurized and accelerated at the acceleration port 31 and blown toward the outer wall of the high-voltage winding 5 above the acceleration port 31, thereby improving the heat dissipation effect on the outer wall of the high-voltage winding 5.

[0048] In addition, reference Figure 4 , Figure 6 and Figure 8, another part of the airflow will enter the heat dissipation gap 8 between the high-voltage winding 5 and the low-voltage winding 4 from the bottom of the locking disk 9 through the vent 26 on the locking disk 9 to dissipate the heat of the low-voltage winding 4 and the high-voltage winding 5. After the airflow enters the heat dissipation gap 8, it will blow the baffle 33. After the baffle 33 is blown by the airflow, it starts to drive the positioning rod 28 and the rotating ring 32 to rotate around the low-voltage winding 4. The rotation direction of the positioning rod 28, the rotating ring 32 and the baffle 33 is the same as the rotation direction of the first locking ring 23 when it engages and moves downward on the first threaded portion 22. At this time, if the first locking ring 23 is loosened during use, the rotating ring 32 can drive the collar 27 and the first locking ring 23 to be tightened again through the friction between the collar 27 and the rotating ring 32 during the rotation process, thereby ensuring the installation stability of the low-voltage winding 4.

[0049] When disassembling the high-voltage winding 5, after removing the upper support plate 6, first rotate the second locking ring 25 to loosen the second locking ring 25 upwards, then rotate the four second locking blocks 18 away from the iron core 2, so that the four second hook portions 20 leave the four second grooves 21 on the high-voltage winding 5, and then use a crane to lift the high-voltage winding 5 upwards to complete the disassembly of the high-voltage winding 5.

[0050] When disassembling the low-voltage winding 4, after disassembling the high-voltage winding 5, first rotate the first locking ring 23 to loosen the first locking ring 23 upwards, then rotate the four first locking blocks 12 away from the iron core 2, so that the four first hook portions 14 leave the four first grooves 15 on the high-voltage winding 5, and then use a crane to lift the low-voltage winding 4 upwards to complete the disassembly of the low-voltage winding 4.

[0051] A specific embodiment of the present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above described embodiment. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments without departing from the principles and ideas of the present invention should still fall within the scope of protection of the present invention.

Claims

1. An energy-saving dry-type transformer for an energy storage power station, comprising a base (1), an iron core (2), a lower support plate (3), a low-voltage winding (4), a high-voltage winding (5), an upper support plate (6) and a heat dissipation fan (7), wherein the base (1) is fixedly mounted on the ground, the iron cores (2) are three, the iron cores (2) are vertically mounted on the base (1) at intervals, the lower support plate (3) is fixedly mounted on the base (1) for clamping the lower side of the iron core (2), the low-voltage winding ( 4) is cylindrical, each of the iron cores (2) is provided with a low-voltage winding (4) on the outside, each of the low-voltage windings (4) is provided with a high-voltage winding (5) coaxially on the outside, a heat dissipation gap (8) is left between each of the low-voltage windings (4) and the high-voltage windings (5), the upper support plate (6) is arranged on the upper side of the iron core (2) for clamping the iron core (2), and a heat dissipation fan (7) is arranged on the base (1) below each of the high-voltage windings (5); characterized in that, The invention also comprises a locking disk (9) sleeved on each of the iron cores (2), the high-voltage winding (5) and the low-voltage winding (4) are both placed on the locking disk (9), and the locking disk (9) is also provided with a clamping assembly for locking the high-voltage winding (5) and the low-voltage winding (4), the clamping assembly comprising a first bent hook portion (14) and a second bent hook portion (20), the first bent hook portion (14) and the second bent hook portion (20) respectively buckle the low-voltage winding (4) and the high-voltage winding (5) to lock them.

2. The energy-saving dry-type transformer for energy storage power station according to claim 1, characterized in that: The clamping assembly comprises a first clamping groove (10) formed on a locking disk (9) and matching with the low-voltage winding (4); the first clamping groove (10) is an annular clamping groove, and the first clamping groove (10) is used to clamp the bottom of the low-voltage winding (4); the locking disk (9) is also provided with a plurality of first locking grooves (11), and the plurality of first locking grooves (11) are evenly distributed on the locking disk (9); first locking blocks (12) are rotatably installed inside the first locking grooves (11); A first torsion spring (13) is arranged inside each of the first locking grooves (11), and the first torsion spring (13) is used to keep the first locking block (12) perpendicular to the locking disk (9). The first hook portion (14) is fixedly mounted on the first locking block (12). A plurality of first grooves (15) are provided on the outer wall of the low-voltage winding (4) corresponding to the plurality of first locking grooves (11). The first hook portion (14) is inserted into the first groove (15) to lock the low-voltage winding (4). The clamping assembly further comprises a second clamping groove (16) formed on the locking disk (9) and matching with the high-voltage winding (5); the second clamping groove (16) is an annular clamping groove and is used to clamp the bottom of the high-voltage winding (5); the locking disk (9) is further provided with a plurality of second locking grooves (17) and the plurality of second locking grooves (17) are evenly distributed on the locking disk (9) around the circumference; a second locking block (18) is rotatably mounted inside the second locking grooves (17); a second torsion spring (19) is provided inside the second locking grooves (17) and is used to keep the second locking block (18) perpendicular to the locking disk (9); the second hook portion (20) is fixedly mounted on the second locking block (18); a plurality of second grooves (21) are formed on the outer wall of the high-voltage winding (5) corresponding to the plurality of second locking grooves (17); the second hook portion (20) is clamped into the second grooves (21) to lock the high-voltage winding (5).

3. The energy-saving dry-type transformer for energy storage power station according to claim 2, characterized in that: The low-voltage winding (4) is provided with a first threaded portion (22) on its outer wall, a first locking ring (23) is threadedly connected to the first threaded portion (22), the first locking ring (23) is trumpet-shaped, and the large end of the trumpet-shaped first locking ring (23) faces downward; the high-voltage winding (5) is provided with a second threaded portion (24), a second locking ring (25) is provided on the second threaded portion (24), the second locking ring (25) is trumpet-shaped, and the large end of the trumpet-shaped first locking ring (23) faces downward.

4. The energy-saving dry-type transformer for energy storage power station according to claim 3, characterized in that: The locking disk (9) is provided with a plurality of ventilation openings (26) corresponding to the heat dissipation gap (8), the ventilation openings (26) all penetrate the locking disk (9), and the plurality of ventilation openings (26) are evenly distributed around the circumference of the locking disk (9).

5. The energy-saving dry-type transformer for energy storage power station according to claim 4, characterized in that: A collar (27) is fixedly installed above the first locking ring (23), and a plurality of positioning rods (28) are rotatably arranged around the collar (27). The positioning rods (28) are all made of rubber material. The plurality of positioning rods (28) are evenly distributed on the collar (27) in a circumference. The positioning rods (28) can swing up and down along the vertical direction. The collar (27) is also provided with a third torsion spring (29) for keeping the positioning rod (28) perpendicular to the low-voltage winding (4).

6. The energy-saving dry-type transformer for energy storage power station according to claim 3, characterized in that: The second locking ring (25) is provided with an air gathering ring (30), which extends downward along the edge of the second locking ring (25) to form a trumpet shape that opens downward, and the second locking ring (25) is provided with a plurality of acceleration ports (31) that penetrate the second locking ring (25) and are evenly distributed on the circumference.

7. The energy-saving dry-type transformer for energy storage power station according to claim 5, characterized in that: A rotating ring (32) is also rotatably mounted on the collar (27); the positioning rod (28) is hinged on the rotating ring (32) to be connected to the collar (27); the third torsion spring (29) is arranged at a hinge position between the positioning rod (28) and the rotating ring (32); a baffle plate (33) is arranged on the positioning rod (28); when the baffle plate (33) is subjected to airflow from bottom to top, the baffle plate (33) rotates around the low-voltage winding (4) along the direction of rotation when the first locking ring (23) moves downward.

8. The energy-saving dry-type transformer for energy storage power station according to claim 2, characterized in that: Inclined guide portions (34) are provided on the tops of the first curved hook portion (14) and the second curved hook portion (20), and the guide portions (34) are inclined downwards towards the center of the first clamping groove (10).

9. The energy-saving dry-type transformer for energy storage power station according to claim 7, characterized in that: A ball (35) is rotatably arranged on one end of the positioning rod (28) away from the hinged end, and the ball (35) is made of plastic material.

Images