Sealed explosion-proof dry-type transformer

Abstract

The invention discloses a sealed anti-explosion dry-type transformer, and belongs to the field of dry-type transformer shells, the sealed anti-explosion dry-type transformer comprises a main cabinet, side cabinets are slidably connected to the left side and the right side in the main cabinet, side doors are rotatably connected to the front surfaces of the side cabinets through hinges, the side doors are located in the main cabinet, and a main door is rotatably connected to the front surface of the main cabinet through hinges; a plurality of transverse frame sets are linearly arrayed on the rear surface of the interior of the main cabinet, longitudinal frame sets are detachably connected into the transverse frame sets, and a dry-type transformer body is arranged among the four longitudinal frame sets. The dry-type transformer can be flexibly adjusted according to the size of the dry-type transformer body through installation of the longitudinal frame sets at different positions; four corners of the transformer body are supported and limited by the four adjacent longitudinal frame groups, and the dry-type transformer body is ensured to be stably mounted by the limiting of the rear transverse frame group; and the interior of the main cabinet can adapt to dry-type transformers of different specifications, so that the universality and applicability of the equipment are improved.

Description

Technical Field

[0001] The invention relates to the field of dry-type transformer casings, and in particular to a sealed explosion-proof dry-type transformer. Background Art

[0002] With the rapid development of the economy and the continuous progress of society, the demand for electricity continues to grow. As an important equipment in the power distribution system, the application scope of dry-type transformers is becoming more and more extensive. In the fields of industrial production, commercial buildings, residents' lives, etc., the reliability and stability of electricity are increasingly required, which requires more high-performance dry-type transformers to meet the demand for power supply. For example, in some large-scale industrial projects, a large amount of power support is required, and the performance and quantity of dry-type transformers directly affect the smooth progress of the project.

[0003] In order to meet the power demand of distribution systems in different scenarios, the specifications and types of dry-type transformers are also constantly expanding. Sealed explosion-proof dry-type transformers have good sealing and explosion-proof performance, can adapt to various complex environmental conditions, and have been widely used in some special occasions such as petrochemicals, mining and other fields. The emergence of this type of transformer provides more options for meeting the power demand of different distribution systems.

[0004] The existing installation method of dry-type transformers is relatively fixed. In some cases where the transformer specifications need to be changed, large-scale modifications to the installation foundation are often required, which increases costs and workload. In addition, the traditional installation structure is not stable enough to limit the position of the transformer, which can easily cause the transformer to move during operation, affecting its performance and safety;

[0005] Therefore, a dry-type transformer is provided which solves the installation and adaptability problems of traditional transformers through the design of adjustable vertical frame group and horizontal frame group, as well as convenient installation and disassembly methods, and can be flexibly adjusted according to dry-type transformer equipment of different sizes, thereby achieving stable installation and limiting, and improving installation efficiency and reliability.

[0006] Dry-type transformers generate a lot of heat during operation. If the heat dissipation is not good, its performance and life will be affected. Traditional dry-type transformer heat dissipation methods mainly include natural cooling and forced air cooling, but both methods have certain limitations. Natural cooling has poor heat dissipation effect and is difficult to meet the heat dissipation requirements of high-power transformers; forced air cooling requires additional heat dissipation equipment, which increases costs and energy consumption, and is prone to failure in some harsh environments.

[0007] Therefore, a method is provided to achieve efficient air cooling through the reciprocating motion of the side cabinet, without the need for additional cooling equipment, thereby reducing costs and energy consumption. At the same time, the sealing design also improves the protection performance of the transformer, making it better adapted to the sealed explosion-proof dry-type transformer in different environmental conditions. Summary of the invention

[0008] In view of the deficiencies in the prior art, the present invention provides a sealed explosion-proof dry-type transformer, which solves the problems raised in the above-mentioned background technology.

[0009] Technical solution: To solve the above technical problems, according to one aspect of the present invention, more specifically, a sealed explosion-proof dry-type transformer comprises a main cabinet, side cabinets are slidably connected to the left and right sides of the main cabinet, the front surface of the side cabinet is rotatably connected to a side door through a hinge, the side door is located inside the main cabinet, the front surface of the main cabinet is rotatably connected to the main door through a hinge, a plurality of horizontal frame groups are linearly arrayed on the rear surface of the main cabinet, a vertical frame group is detachably connected to the horizontal frame group, a dry-type transformer body is arranged between four of the vertical frame groups, the rear surface of the dry-type transformer body is in contact with the front surface of the horizontal frame group, and the four corners of the dry-type transformer body are respectively in contact with the outer surfaces of the four adjacent vertical frame groups.

[0010] Furthermore, the cross frame group includes a cross beam, a plurality of holes are provided on the front surface of the cross beam, a cross groove is provided on the upper surface of the cross beam, the plurality of holes are communicated with the interior of the cross groove, a screw rod is rotatably connected at the lower part of the interior of the cross beam, two screw blocks are threadedly connected to the outer surface of the screw rod, the two screw blocks are respectively located on the left and right sides of the cross beam, a connecting rod is rotatably connected to the top of the screw block, and the opposite ends of the two connecting rods are rotatably connected to a cross bar, the cross bar is located in the cross groove, and rotating blocks are fixed to the left and right ends of the screw rod.

[0011] Furthermore, the longitudinal frame group includes a cross beam, a plug rod is fixed at the rear end center of the cross beam, a slot is provided above the outer surface of the plug rod, an inner slot is opened through the front of the cross beam, the rear surface of the inner slot is rotatably connected with a main gear, the left and right ends of the main gear are meshed with slave gears, the slave gear is rotatably connected with the inner groove, a rotating rod is fixed in the middle of the main gear, a push plate is sleeved on the outer surface of the rotating rod, a rectangular rod is fixed on the front surface of the slave gear, and a positioning card plate and a turntable are slidably connected to the outer surface of the rectangular rod from front to back in sequence, the turntable is fixedly connected to the positioning card plate, an annular limit groove is provided on the outer surface of the turntable, a screw rod 2 is rotatably connected to the top of the inner slot, a screw plate is integrally formed on the top of the push plate, and the inside of the screw plate is threadedly connected to the outer surface of the screw rod 2.

[0012] Furthermore, the insertion rod is plugged into the insertion hole, the card slot is located inside the horizontal slot, and the card slot is card-engaged with the horizontal bar.

[0013] Furthermore, the screw rod 2 and the front end of the rotating rod both penetrate the front surface of the cross beam, and are respectively fixed with the operating block 1 and the operating block 2.

[0014] Furthermore, a plurality of air grooves are formed through the rear surface of the side cabinet, the rear end of the crossbeam is located inside the air grooves, and the crossbeam is slidably connected to the air grooves.

[0015] Furthermore, two motors are fixed on the upper surface of the main cabinet, a crank is fixed to the rear end of the motor output shaft, the outer surface of the crank is rotatably connected to connecting rod 2, a fixing rod is fixed to the rear surface of the side cabinet, and the outer surface of the fixing rod is rotatably connected to the end of connecting rod 2 away from the crank.

[0016] Furthermore, the bottoms of the two side cabinets are rotatably connected with rollers.

[0017] The beneficial effects of a sealed explosion-proof dry-type transformer of the present invention are as follows: (1) the present invention can be flexibly adjusted according to the size of the dry-type transformer body by arranging the installation of the longitudinal frame groups at different positions; four adjacent longitudinal frame groups support and limit the four corners of the transformer body, and the limit of the rear horizontal frame group ensures the stable installation of the dry-type transformer body; and the interior of the main cabinet can adapt to dry-type transformers of different specifications, thereby improving the versatility and applicability of the equipment; in different power demand scenarios, a dry-type transformer of a suitable size can be selected for installation according to the actual situation, without replacing the entire cabinet, thereby reducing costs.

[0018] The cross-shaped vertical frame group design allows for arbitrary installation and combination, so that matching dry-type transformer bodies can be installed between four adjacent vertical frame groups; multiple dry-type transformer bodies can be installed and placed inside the main cabinet, which improves space utilization and meets a variety of power demand scenarios.

[0019] (2) The present invention provides an effective solution for the heat dissipation of the dry-type transformer body by setting a side cabinet; the crank is driven by the motor to rotate, and the connecting rod 2 is pushed and pulled to make the side cabinet slide back and forth horizontally using rollers; during the sliding process, the internal space of the main cabinet and the side cabinet is constantly changing, so that the internal pressure changes, thereby realizing efficient air cooling and heat dissipation of the dry-type transformer body; when the space is contracted and squeezed, the gas heated by the heat dissipation of the transformer body is discharged through the air groove; when the space is stretched, the external cold air is sucked into the internal space of the cabinet under negative pressure; the heat dissipation method using natural convection does not require additional heat dissipation equipment, which reduces costs and energy consumption, and also improves heat dissipation efficiency.

[0020] Under special circumstances, the side cabinet can be slid into the main cabinet, so that the air trough connected to the outside can also enter the main cabinet, thereby isolating the internal space of the main cabinet from the outside; the sealing design can better isolate the external environment from the damage to the dry-type transformer body, such as dust, moisture, corrosive gases, etc.; the sealed explosion-proof dry-type transformer body itself has good explosion-proof performance, and the sealing design of the main cabinet and side cabinet further improves the safety of the entire transformer system; such as in harsh environmental conditions or flammable and explosive places, it can more effectively protect the dry-type transformer, prevent it from being damaged by external factors, and ensure the safety of personnel and equipment.

[0021] (3) During the use of the present invention, when it is necessary to open for inspection or installation and disassembly, the two side cabinets can be moved to the outermost side, so that the internal space after opening is larger, which is convenient for personnel to operate; first flip up the main door, and then rotate the side doors on both sides outward to open, so that the internal space of the cabinet is completely exposed, providing personnel with sufficient operating space; so that when performing installation, disassembly, maintenance and inspection of dry-type transformers, personnel can operate more conveniently, thereby improving work efficiency. When performing maintenance work on large dry-type transformers or multiple installed dry-type transformers, large space operation allows personnel to perform various operations more easily, reducing the difficulty and risk of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0023] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a rear view structural schematic diagram of the present invention; Figure 3 It is a cross-sectional structural schematic diagram of the present invention; Figure 4 For the present invention Figure 3 The schematic diagram of the structure after the enlargement of A in the middle; Figure 5 This is a schematic diagram of the internal structure of the main cabinet in the present invention; Figure 6 It is a structural schematic diagram of the horizontal frame group and the vertical frame group in the present invention; Figure 7 It is a structural schematic diagram of the horizontal frame group in the present invention; Figure 8 It is a structural schematic diagram of the crossbeam in the present invention; Fig. 9 It is a side view structural schematic diagram of the vertical frame group in the present invention; Fig.10 It is a schematic diagram of the internal structure of the vertical frame group in the present invention; Fig.11 For the present invention Fig.10Schematic diagram of the side structure.

[0024] In the figure: 1. main cabinet; 2. side cabinet; 3. side door; 4. main door; 5. air trough; 6. horizontal frame group; 7. vertical frame group; 8. dry-type transformer body; 9. roller; 10. horizontal beam; 11. socket; 12. horizontal groove; 13. screw rod 1; 14. screw block; 15. connecting rod 1; 16. horizontal bar; 17. rotating block; 18. cross beam; 19. plug rod; 20. slot; 21. inner slot; 22. main gear; 23. slave gear; 24. rotating rod; 25. push plate; 26. rectangular rod; 27. positioning card plate; 28. turntable; 29. ​​limit slot; 30. screw rod 2; 31. screw plate; 32. operating block 1; 33. operating block 2; 34. motor; 35. crank; 36. connecting rod 2; 37. fixing rod. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0026] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Reference Figure 1-Figure 11 A sealed explosion-proof dry-type transformer comprises a main cabinet 1, side cabinets 2 are slidably connected to the left and right sides of the main cabinet 1, the front surface of the side cabinet 2 is connected to a side door 3 by hinge rotation, the side door 3 is located inside the main cabinet 1, the front surface of the main cabinet 1 is connected to a main door 4 by hinge rotation, a plurality of horizontal frame groups 6 are arranged in a linear array on the rear surface of the main cabinet 1, the vertical frame group 7 is disassembled and connected inside the horizontal frame group 6, a dry-type transformer body 8 is arranged between the four vertical frame groups 7, the dry-type transformer body 8 is a sealed explosion-proof dry-type transformer, the rear surface of the dry-type transformer body 8 is in contact with the front surface of the horizontal frame group 6, and the four corners of the dry-type transformer body 8 are respectively connected to the adjacent The outer surfaces of the four longitudinal frame groups 7 are fitted together. According to the size of the dry-type transformer body 8, the longitudinal frame groups 7 are selected to be installed in different positions, so that the four adjacent longitudinal frame groups 7 support and limit the four corners of the dry-type transformer body 8, so that the dry-type transformer body 8 cannot move up and down, left and right, and the rear cannot move backward due to the limit of the horizontal frame group 6; when opening for maintenance or installation and disassembly, the two side cabinets 2 can be moved to the outermost side, so that the internal space after opening is larger, which will be more convenient for personnel to operate; when opening, it is necessary to first flip up the main door 4, and then rotate the side doors 3 on both sides outward to open, at this time The internal space of the cabinet is completely exposed, which is convenient for personnel to operate.

[0028] Reference Figure 6-Figure 11The cross frame group 6 includes a cross beam 10, a plurality of jacks 11 are provided on the front surface of the cross beam 10, a cross groove 12 is provided on the upper surface of the cross beam 10, and the plurality of jacks 11 are communicated with the inside of the cross groove 12, a screw rod 13 is rotatably connected to the lower part of the cross beam 10, and two screw blocks 14 are threadedly connected to the outer surface of the screw rod 13, and the two screw blocks 14 are respectively located on the left and right sides of the cross beam 10, and a connecting rod 15 is rotatably connected to the top of the screw block 14, and the opposite ends of the two connecting rods 15 are rotatably connected to a cross bar 16, which is located in the cross groove 12, and rotating blocks 17 are fixed to the left and right ends of the screw rod 13.

[0029] The longitudinal frame group 7 includes a cross beam 18, a plug rod 19 is fixed at the center of the rear end of the cross beam 18, a slot 20 is opened above the outer surface of the plug rod 19, an inner slot 21 is opened through the front of the cross beam 18, and a main gear 22 is rotatably connected to the rear surface of the inner slot 21. The left and right ends of the main gear 22 are meshed and connected with a slave gear 23, and the slave gear 23 is rotatably connected to the inner groove 21. A rotating rod 24 is fixed to the middle of the main gear 22, and a push plate 25 is sleeved on the outer surface of the rotating rod 24. A rectangular rod 26 is fixed to the front surface of the slave gear 23. The outer surface of the rectangular rod 26 is slidably connected to a positioning card plate 27 and a turntable 28 in sequence from front to back. The turntable 28 is fixedly connected to the positioning card plate 27, and the outer surface of the turntable 28 An annular limiting groove 29 is provided, and a screw rod 30 is rotatably connected to the upper part of the inner groove 21. A screw plate 31 is integrally formed at the top of the push plate 25. The inside of the screw plate 31 is threadedly connected to the outer surface of the screw rod 30. The cross-shaped vertical frame group 7 allows any installation and assembly to be performed, and the four adjacent vertical frame groups 7 can be installed with an adapted dry-type transformer body 8, so that a plurality of dry-type transformer bodies 8 can be installed and placed inside the main cabinet 1 for use. The rear surface of the positioning card plate 27 is in contact with the front surface of the dry-type transformer body 8, so that the vertical frame group 7 not only limits the left and right upper and lower positions of the dry-type transformer body 8, but also prevents the dry-type transformer body 8 from moving forward, thereby allowing the dry-type transformer body 8 to be stably installed and placed.

[0030] The plug rod 19 is plugged into the jack 11, the slot 20 is located inside the transverse groove 12, the slot 20 is plugged into the cross bar 16, and the plug rod 19 is adapted to all the jacks 11, so that the installation position can be changed arbitrarily to adapt to the use of dry-type transformer bodies 8 of different sizes; by rotating the rotating block 17 to rotate the screw rod 13, the screw blocks 14 on both sides move relatively, and the connecting rod 15 is pushed to lift the cross bar 16, so that the cross bar 16 is separated from the transverse groove 12, and the plug rod 19 in the vertical frame group 7 can be pulled out to complete the disassembly, and can be replaced and inserted into other positions. After insertion, the rotating block 17 is rotated in the opposite direction to make the cross bar 16 descend and snap into the slot 20 at the plug rod 19, so that the installation of the vertical frame group 7 and the cross frame group 6 can be completed; by rotating the screw plate 31 30 The push plate 25 slides forward and backward along the surface of the rotating rod 24. Since the surface of the push plate 25 is located inside the limiting groove 29, it drives the rotating disk 28 and the positioning card plate 27 to slide along the surface of the rectangular rod 26, so that the positioning card plate 27 can fit the front surface of the dry-type transformer body 8, and is suitable for the use of dry-type transformer bodies 8 with different front and rear lengths. When installing or disassembling the dry-type transformer body 8, the main gear 22 drives the two slave gears 23 to rotate by rotating the rotating rod 24, and the rectangular rod 26 drives the rotating disk 28 and the positioning card plate 27 to rotate, so that the positioning card plates 27 on both sides are rotated 90 degrees and placed horizontally, and no longer contact the upper or lower dry-type transformer body 8 to limit the position, and the dry-type transformer body 8 can be moved forward to be disassembled.

[0031] Reference Figure 9-11 The front ends of the screw rod 2 30 and the rotating rod 24 both penetrate the front surface of the cross beam 18, and are respectively fixed with an operating block 1 32 and an operating block 2 33. The screw rod 2 30 can be rotated by rotating the operating block 1 32, and the rotating rod 24 can be rotated by rotating the operating block 2 33.

[0032] Reference Figure 1-Figure 5, a plurality of air grooves 5 are formed through the rear surface of the side cabinet 2, the rear end of the crossbeam 10 is located inside the air groove 5, and the crossbeam 10 is slidably connected to the air groove 5. In special cases, by sliding the two side cabinets 2 into the main cabinet 1, the air grooves 5 connected to the outside are also introduced into the main cabinet 1. At this time, the internal space of the main cabinet 1 is isolated from the outside, and the external environment is better isolated from the damage to the dry-type transformer body 8; two motors 34 are fixed on the upper surface of the main cabinet 1, and a crank 35 is fixed at the rear end of the output shaft of the motor 34. The outer surface of the crank 35 is rotatably connected to a connecting rod 2 36, and a fixed rod 37 is fixed on the rear surface of the side cabinet 2. The outer surface of the fixed rod 37 is connected to the connecting rod 2 36 is rotatably connected to one end away from the crank 35; the bottoms of the two side cabinets 2 are rotatably connected to rollers 9. When the motor 34 is running, the crank 35 is driven to rotate, and the side cabinets 2 located on both sides of the main cabinet 1 are made to slide back and forth horizontally through the rollers 9 through the push-pull connecting rod 2 36. During the sliding period, the internal space of the main cabinet 1 and the two side cabinets 2 is constantly changing, causing the internal pressure to change. When squeezing, the gas heated up by the operation and heat dissipation of the dry-type transformer body 8 is squeezed out through a plurality of air grooves 5. When the space is stretched, the external cold air negative pressure is sucked into the internal space of the cabinet, and the dry-type transformer body 8 is efficiently cooled by air.

[0033] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A sealed explosion-proof dry-type transformer, comprising a main cabinet (1), characterized in that: The left and right sides of the main cabinet (1) are slidably connected to side cabinets (2); the front surface of the side cabinet (2) is rotatably connected to a side door (3) via a hinge; the side door (3) is located inside the main cabinet (1); the front surface of the main cabinet (1) is rotatably connected to a main door (4) via a hinge; the rear surface of the main cabinet (1) has a plurality of horizontal frame groups (6) in a linear array; the horizontal frame group (6) is detachably connected to a vertical frame group (7); a dry-type transformer body (8) is arranged between four vertical frame groups (7); the rear surface of the dry-type transformer body (8) is in contact with the front surface of the horizontal frame group (6); and the four corners of the dry-type transformer body (8) are respectively in contact with the outer surfaces of four adjacent vertical frame groups (7).

2. A sealed explosion-proof dry-type transformer according to claim 1, characterized in that: The cross frame group (6) comprises a cross beam (10), a front surface of the cross beam (10) is provided with a plurality of insertion holes (11), an upper surface of the cross beam (10) is provided with a transverse groove (12), the plurality of insertion holes (11) are all connected to the inside of the transverse groove (12), a screw rod (13) is rotatably connected to the lower part of the inside of the cross beam (10), the outer surface of the screw rod (13) is threadedly connected to two screw blocks (14), the two screw blocks (14) are respectively located on the left and right sides of the cross beam (10), the top of the screw block (14) is rotatably connected to a connecting rod (15), the opposite ends of the two connecting rods (15) are rotatably connected to a cross bar (16), the cross bar (16) is located in the transverse groove (12), and the left and right ends of the screw rod (13) are both fixed with rotating blocks (17).

3. A sealed explosion-proof dry-type transformer according to claim 2, characterized in that: The longitudinal frame group (7) comprises a cross beam (18), a plug rod (19) is fixed at the rear end center of the cross beam (18), a slot (20) is provided above the outer surface of the plug rod (19), an inner slot (21) is provided through the front of the cross beam (18), a main gear (22) is rotatably connected to the rear surface of the inner slot (21), the left and right ends of the main gear (22) are meshedly connected to the slave gear (23), the slave gear (23) is rotatably connected to the inside of the inner slot (21), a rotating rod (24) is fixed in the middle of the main gear (22), and the rotating rod (24) The outer surface is sleeved with a push plate (25), the front surface of the slave gear (23) is fixed with a rectangular rod (26), the outer surface of the rectangular rod (26) is slidably connected with a positioning clamping plate (27) and a rotating disk (28) in sequence from front to back, the rotating disk (28) is fixedly connected to the positioning clamping plate (27), the outer surface of the rotating disk (28) is provided with an annular limiting groove (29), the upper part of the inner groove (21) is rotatably connected with a second screw rod (30), the top of the push plate (25) is integrally formed with a screw plate (31), the inside of the screw plate (31) is threadedly connected to the outer surface of the second screw rod (30).

4. A sealed explosion-proof dry-type transformer according to claim 3, characterized in that: The insertion rod (19) is plugged into the insertion hole (11), the clamping slot (20) is located inside the transverse slot (12), and the clamping slot (20) is clamped into the transverse bar (16).

5. A sealed explosion-proof dry-type transformer according to claim 3, characterized in that: The front ends of the second screw rod (30) and the rotating rod (24) both penetrate the front surface of the cross beam (18), and are respectively fixed with an operating block one (32) and an operating block two (33).

6. A sealed explosion-proof dry-type transformer according to claim 2, characterized in that: A plurality of air grooves (5) are formed through the rear surface of the side cabinet (2), the rear end of the crossbeam (10) is located inside the air groove (5), and the crossbeam (10) is slidably connected to the air groove (5).

7. A sealed explosion-proof dry-type transformer according to claim 6, characterized in that: Two motors (34) are fixed on the upper surface of the main cabinet (1); a crank (35) is fixed to the rear end of the output shaft of the motor (34); the outer surface of the crank (35) is rotatably connected to a second connecting rod (36); a fixing rod (37) is fixed to the rear surface of the side cabinet (2); the outer surface of the fixing rod (37) is rotatably connected to an end of the second connecting rod (36) away from the crank (35).

8. The sealed explosion-proof dry-type transformer according to claim 1, characterized in that: The bottoms of the two side cabinets (2) are both rotatably connected to rollers (9).

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