Dry-type transformer

Abstract

The invention relates to the technical field of dry type transformers, in particular to a dry type transformer which comprises a transformer body, the transformer body comprises a high-voltage coil and a low-voltage coil, the high-voltage coil is connected to the outer side of the low-voltage coil in a sleeving mode, a gap is reserved between the high-voltage coil and the low-voltage coil, and a plurality of vertically-through air channels are formed in the high-voltage coil and the low-voltage coil. Air guide pieces are arranged on the upper sides and the lower sides of the high-voltage coil and the low-voltage coil, and air ports of the air guide pieces are matched with air channel openings of the high-voltage coil and the low-voltage coil and gaps between the high-voltage coil and the low-voltage coil. According to the dry-type transformer, air circulation heat dissipation and water circulation cooling are combined through the integrated air channel, the heat dissipation calandria, the circulating fan and the water pumping device, the heat dissipation efficiency of the dry-type transformer is improved, the dry-type transformer can keep good heat dissipation performance in a closed or limited space, meanwhile, through the designed transmission mechanism, the heat dissipation efficiency of the dry-type transformer is improved, and the heat dissipation efficiency of the dry-type transformer is improved. Vibration energy generated when the transformer body works is converted into driving force of the water pumping device, and recycling of the vibration energy is achieved.

Description

Technical Field

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

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. A dry-type transformer refers to a transformer whose core and winding are not immersed in insulating oil. It has the advantages of strong short-circuit resistance, low maintenance workload, high operating efficiency and small size. It is often used in places with high requirements for fire protection, explosion protection and other performance.

[0003] Traditional dry-type transformers usually use natural air cooling (AN) or forced air cooling (AF). However, these cooling methods require that the installation environment of the transformer cannot be too closed to ensure sufficient air volume for heat dissipation. This limitation restricts the application of dry-type transformers in certain or restricted spaces. In addition, dry-type transformers will generate vibrations during operation, which not only constitute a source of noise pollution, but also have an adverse effect on the structural stability and service life of the transformer. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a dry-type transformer which can both efficiently dissipate heat and effectively utilize transformer vibration energy.

[0005] The technical solution of the present invention is: a dry-type transformer, comprising a base, an upper clamp, a lower clamp and a transformer body, the lower clamp is fixedly connected to the base, the transformer body is located between the upper clamp and the lower clamp, the transformer body comprises a high-voltage coil and a low-voltage coil, the high-voltage coil is sleeved on the outside of the low-voltage coil, and a gap is left, a plurality of air passages are provided in the high-voltage coil and the low-voltage coil, the upper and lower sides of the high-voltage coil and the low-voltage coil are provided with air guides, the air ports of the air guides match the air passage openings of the high-voltage coil and the low-voltage coil and the gap between the two, and the air is passed between the outer sides of the two air guides The pipe is connected with a heat dissipation pipe and a circulation fan. The heat dissipation pipe is located at the rear side of the transformer body. The circulation fan is fixed to one side of the base. A first water tank is also provided on the base. A second water tank is provided above the heat dissipation pipe. The first water tank and the second water tank are connected through an inlet pipe and a return pipe. The inlet pipe part is located inside the pipe of the heat dissipation pipe. A plurality of water pumping devices are provided at the rear of the base. The water pumping devices are used to pump the water in the first water tank to the second water tank through the inlet pipe. Each water pumping device includes a reciprocating pump and a transmission mechanism. The transmission mechanism can convert the vibration generated when the transformer body is working into the driving force of the reciprocating pump.

[0006] Furthermore, the transmission mechanism includes a force-bearing rod, a connecting rod, a ratchet, a pawl 1 and a pawl 2. A box body is provided at the rear of the base, and a plurality of fixed rods are fixedly connected to the box body. A mounting frame is fixedly connected to the side of each fixed rod in the box body. The force-bearing rod is rotatably connected to the fixed rod, and the ratchet is rotatably connected to the middle part of the mounting frame. One end of the force-bearing rod is in contact with the bottom of the lower clamp, and the other end of the force-bearing rod is indirectly connected to the ratchet through the connecting rod. The middle part of the connecting rod is rotatably connected to the top of the mounting frame, one end of the connecting rod is rotatably connected to the force-bearing rod, and the other end of the connecting rod is rotatably connected to pawl 1, and pawl 2 is rotatably connected to the middle rotating shaft of the connecting rod, and pawl 1 and pawl 2 are both engaged with the ratchet.

[0007] Furthermore, the transmission mechanism also includes a swivel and a connecting frame. The swivel is fixedly connected to the rotating shaft of the ratchet. A fixed column is fixedly connected to the swivel. The reciprocating pump is fixedly connected to the upper part of the box body in a through-type manner. The lower end of the piston rod of the reciprocating pump is fixedly connected to the connecting frame. The fixed column is movably connected to the connecting frame.

[0008] Furthermore, each reciprocating pump is provided with a liquid inlet and a liquid outlet, and a one-way valve is installed inside the liquid inlet and the liquid outlet to ensure the one-way flow of water.

[0009] Furthermore, a cooling plate is obliquely provided in the first water tank, and an inlet and an outlet are respectively provided at the high and low positions of the cooling plate, so that water flowing into the cooling plate from the inlet can naturally flow out from the outlet, and a baffle is provided in the second water tank, which divides the interior of the second water tank into chamber one and chamber two, wherein the height of the baffle is lower than the top surface of the second water tank, so that the water in chamber one can naturally overflow into chamber two when there is surplus water.

[0010] Furthermore, the water inlet pipe includes a water inlet pipe 1 and multiple groups of water inlet pipes 2. One end of the water inlet pipe 1 is connected to the liquid inlet of the reciprocating pump through multiple branches, and the other end of the water inlet pipe 1 is connected to the outlet of the cooling plate. One end of each group of water inlet pipes 2 are joined and connected to the liquid outlet of a reciprocating pump. The number of groups of water inlet pipes 2 is the same as the number of reciprocating pumps. The other end of each group of water inlet pipes 2 is connected to chamber 1 in the second water tank, and both ends of the return pipe are respectively connected to the inlet of the cooling plate and chamber 2 in the second water tank.

[0011] Furthermore, the number of the second water inlet pipes is the same as the number of the heat dissipation pipes, and the middle section of each second water inlet pipe is located inside a pipe of the heat dissipation pipe.

[0012] Furthermore, a spring is connected between one end of the stress-bearing rod away from the base and the fixing rod, and the spring is used to assist the vibration of the stress-bearing rod.

[0013] The beneficial effects of the present invention are as follows: the present invention combines air circulation heat dissipation with water circulation cooling by integrating air ducts, heat dissipation exhaust pipes, circulating fans and water pumping devices, thereby improving the heat dissipation efficiency of dry-type transformers, so that dry-type transformers can maintain good heat dissipation performance even in closed or confined spaces. At the same time, through the designed transmission mechanism, the vibration energy generated by the transformer body during operation is converted into the driving force of the water pumping device, thereby realizing the recovery and utilization of vibration energy, which not only reduces the negative impact of vibration on the transformer structure and the surrounding environment, but also improves the energy utilization efficiency of the overall system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the installation structure of the first water tank, the second water tank and the heat dissipation pipe of the present invention.

[0016] Figure 3 The figure is a schematic diagram of the installation structure of the air guide, the heat dissipation pipe and the circulation fan of the present invention.

[0017] Figure 4 It is a schematic diagram of the installation structure of the water inlet pipe 1, the water inlet pipe 2 and the return pipe of the present invention.

[0018] Figure 5 It is a cross-sectional view of the internal structure of the second water tank and the tank body of the present invention.

[0019] Figure 6 It is a schematic diagram of the first three-dimensional structure of the transmission mechanism of the present invention.

[0020] Figure 7 It is a schematic diagram of a second three-dimensional structure of the transmission mechanism of the present invention.

[0021] Figure 8 It is a cross-sectional view of the internal structure of the first water tank of the present invention.

[0022] Explanation of the reference numerals: 10-base, 11-lower clamp, 12-transformer body, 13-air duct, 20-air guide, 21-heat dissipation pipe, 22-circulating fan, 30-first water tank, 31-cooling plate, 40-second water tank, 41-baffle, 50-water inlet pipe one, 51-water inlet pipe two, 52-return pipe, 60-reciprocating pump, 70-force rod, 71-connecting rod, 72-ratchet, 73-ratchet one, 74-ratchet two, 75-swivel, 76-fixed column, 77-connecting frame, 80-box, 81-fixed rod, 82-mounting frame, 90-spring. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] Thus, a feature indicated in this specification will be used to illustrate one of the features of an embodiment of the present invention, rather than implying that each embodiment of the present invention must have the described feature. In addition, it should be noted that this specification describes many features. Although some features can be combined together to illustrate possible system designs, these features can also be used in other combinations that are not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0025] In the description of the present application, the terms “first” and “second” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0026] In the description of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0028] See also Figure 1-Figure 8A dry-type transformer includes a base 10, an upper clamp, a lower clamp 11 and a transformer body 12. The lower clamp 11 is fixedly connected to the base 10. The transformer body 12 is located between the upper clamp and the lower clamp 11. The transformer body 12 includes a high-voltage coil and a low-voltage coil. The high-voltage coil is sleeved on the outside of the low-voltage coil with a gap. A plurality of air passages 13 running through the high-voltage coil and the low-voltage coil are provided in the high-voltage coil and the low-voltage coil. Air guides 20 are provided on the upper and lower sides of the high-voltage coil and the low-voltage coil. The air ports of the air guides 20 match the openings of the air passages 13 of the high-voltage coil and the low-voltage coil and the gap between the two. A heat dissipation pipe 21 and a circulation fan 22 are connected between the outer sides of the two air guides 20 through an air pipe. The heat dissipation pipe 21 is installed on the base 10 through a fixing frame and is located on the rear side of the transformer body 12. The circulation fan 22 The circulating fan 22 is fixedly connected to one side of the base 10. The circulating fan 22 can drive the air to circulate in the air passages 13, gaps and heat dissipation pipes 21 of the high-voltage coil and the low-voltage coil. A first water tank 30 is fixedly connected to the base 10 below the lower clamp 11, and a second water tank 40 is fixedly connected to the top of the fixing frame above the heat dissipation pipe 21. The first water tank 30 and the second water tank 40 are connected through an inlet pipe and a return pipe 52. The inlet pipe is partially located inside the heat dissipation pipe 21. A plurality of water pumping devices are provided at the rear of the base 10. The water pumping devices are used to pump the water in the first water tank 30 to the second water tank 40 through the inlet pipe. Each water pumping device includes a reciprocating pump 60 and a transmission mechanism. The transmission mechanism can convert the vibration generated when the transformer body 12 is working into the driving force of the reciprocating pump 60.

[0029] The transmission mechanism includes a force-bearing rod 70, a connecting rod 71, a ratchet 72, a pawl 1 73 and a pawl 2 74. A box 80 is provided at the rear of the base 10. Three fixed rods 81 are fixedly connected in the box 80. A mounting frame 82 is fixedly connected to each fixed rod 81 in the box 80. The force-bearing rod 70 is rotatably connected to the fixed rod 81. The ratchet 72 is rotatably connected to the middle of the mounting frame 82. One end of the force-bearing rod 70 contacts the bottom of the lower clamp 11. The other end of the force-bearing rod 70 is indirectly connected to the ratchet 72 through the connecting rod 71. The middle of the connecting rod 71 is rotatably connected to the mounting frame At the top of 82, one end of the connecting rod 71 is rotatably connected to the force-bearing rod 70, and the other end of the connecting rod 71 is rotatably connected to a pawl 1 73. A pawl 2 74 is rotatably connected to the middle rotating shaft of the connecting rod 71. Both the pawl 1 73 and the pawl 2 74 are engaged with the ratchet 72. The transformer body 12 vibrates due to the electromagnetic force, and these vibrations are transmitted to the force-bearing rod 70 through the lower clamp 11. When the force-bearing rod 70 is vibrated, it will swing on the fixed rod 81, and drive the pawl 1 73 and the pawl 2 74 to alternately engage with the ratchet 72 through the connecting rod 71, thereby driving the ratchet 72 to rotate.

[0030] The transmission mechanism also includes a swivel 75 and a connecting frame 77. The swivel 75 is fixedly connected to the rotating shaft of the ratchet 72. A fixing column 76 is fixedly connected to the swivel 75. The reciprocating pump 60 is fixedly connected to the upper part of the box body 80 in a through-type manner. The lower end of the piston rod of the reciprocating pump 60 is fixedly connected to the connecting frame 77. The fixing column 76 is movably connected to the inside of the connecting frame 77 to convert the rotation of the swivel 75 into the reciprocating linear motion of the piston rod of the reciprocating pump 60.

[0031] Each reciprocating pump 60 is provided with a liquid inlet and a liquid outlet. Both the liquid inlet and the liquid outlet are provided with a one-way valve (not shown in the figure) to ensure the one-way flow of water inside the reciprocating pump 60 .

[0032] A cooling plate 31 is obliquely provided in the first water tank 30, and an inlet and an outlet are respectively provided at the high and low positions of the cooling plate 31, so that water flowing into the cooling plate 31 from the inlet can naturally flow out from the outlet. A baffle 41 is provided in the second water tank 40, and the baffle 41 divides the interior of the second water tank 40 into chamber one and chamber two, wherein the height of the baffle 41 is lower than the top surface of the second water tank 40, so that the water in chamber one can naturally overflow into chamber two when there is surplus water.

[0033] The water inlet pipe includes a water inlet pipe 1 50 and three groups of water inlet pipes 2 51. The number of water inlet pipes 2 51 is the same as the number of the heat dissipation pipes 21, and the middle section of each water inlet pipe 2 51 is located inside a pipe of the heat dissipation pipe 21. One end of the water inlet pipe 1 50 is connected to the liquid inlet of the reciprocating pump 60 through three branch pipes, and the other end of the water inlet pipe 1 50 is connected to the outlet of the cooling plate 31. The number of groups of water inlet pipes 2 51 is the same as the number of the reciprocating pumps 60. One end of each group of water inlet pipes 2 51 is joined and connected to the liquid outlet of a reciprocating pump 60. The other end of each group of water inlet pipes 2 51 is connected to chamber 1 in the second water tank 40. Both ends of the return pipe 52 are respectively connected to the inlet of the cooling plate 31 and chamber 2 in the second water tank 40.

[0034] A spring 90 is connected between one end of the force-bearing rod 70 away from the base 10 and the fixing rod 81 , and the spring 90 is used to assist the vibration of the force-bearing rod 70 .

[0035] Working principle: When the transformer body 12 is working, heat is generated under the action of electromagnetic force, and the circulating fan 22 drives the air to circulate in the air duct 13, gap and heat dissipation pipe 21 of the high-voltage coil and the low-voltage coil, and the heat is exchanged with the external environment through the heat dissipation pipe 21. At the same time, the transformer body 12 vibrates due to the electromagnetic force, and these vibrations are transmitted to the force-bearing rod 70 through the lower clamp 11. When the force-bearing rod 70 is vibrated, it will swing on the fixed rod 81, and drive the pawl 1 73 and the pawl 2 74 to alternately engage with the ratchet 72 through the connecting rod 71, thereby driving the ratchet 72 to rotate. The rotation of the ratchet 72 will drive the swivel 75 and the fixed column 76 to rotate synchronously, and then drive the piston rod to reciprocate up and down through the connecting frame 77. When the piston rod moves downward, the cooling water at the outlet of the cooling plate 31 in the first water tank 30 is sucked in through the liquid inlet. Water; when the piston rod moves upward, the cooling water is pressed out through the liquid outlet, and the cooling water is pressed into the heat dissipation pipe 21 through the water inlet pipe 51. The cooling water exchanges heat with the air inside the heat dissipation pipe 21, effectively reducing the temperature of the air flowing through the heat dissipation pipe 21. The water temperature after heat exchange becomes higher and is continued to be pressed into the chamber 1 of the second water tank 40. When the hot water in the chamber 1 is surplus, it will naturally overflow into the chamber 2. Finally, this part of the hot water will be sent back to the inlet of the cooling plate 31 in the first water tank 30 through the return pipe 52, and then flow into the cooling plate 31 from the inlet, and then naturally flow through the middle of the cooling plate 31 under the action of gravity, and then flow out from the outlet after cooling, realizing the circulation of water. The spring 90 is used to assist the vibration of the force-bearing rod 70. When the vibration of the transformer body 12 is weak, the force-bearing rod 70 can still maintain a certain vibration amplitude, thereby ensuring the normal operation of the water pumping device.

[0036] Although the present disclosure has been shown and described with reference to specific exemplary embodiments of the present disclosure, it should be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-mentioned embodiments, but should be determined not only by the appended claims, but also by the equivalents of the appended claims.

Claims

1. A dry-type transformer, comprising a base (10), an upper clamp, a lower clamp (11) and a transformer body (12), wherein the lower clamp (11) is fixedly connected to the base (10), the transformer body (12) is located between the upper clamp and the lower clamp (11), the transformer body (12) comprises a high-voltage coil and a low-voltage coil, the high-voltage coil is sleeved on the outside of the low-voltage coil with a gap, and a plurality of air passages (13) are provided in the high-voltage coil and the low-voltage coil, wherein: Air guides (20) are provided on both upper and lower sides of the high-voltage coil and the low-voltage coil. The air ports of the air guides (20) match the openings of the air passages (13) of the high-voltage coil and the low-voltage coil and the gap therebetween. A heat dissipation pipe (21) and a circulation fan (22) are connected between the outer sides of the two air guides (20) via an air pipe. The heat dissipation pipe (21) is located at the rear side of the transformer body (12). The circulation fan (22) is fixedly connected to one side of the base (10). The base (10) is also provided with a first water tank (30). A heat dissipation pipe (21) is provided above the heat dissipation pipe (21). A second water tank (40), wherein the first water tank (30) and the second water tank (40) are connected via a water inlet pipe and a water return pipe (52), wherein the water inlet pipe is partially located inside the heat dissipation exhaust pipe (21), and a plurality of water pumping devices are provided at the rear of the base (10), wherein the water pumping devices are used to pump water in the first water tank (30) to the second water tank (40) via the water inlet pipe, and each of the water pumping devices comprises a reciprocating pump (60) and a transmission mechanism, wherein the transmission mechanism is capable of converting vibration generated by the transformer body (12) during operation into a driving force for the reciprocating pump (60).

2. A dry-type transformer according to claim 1, characterized in that: The transmission mechanism comprises a force-bearing rod (70), a connecting rod (71), a ratchet (72), a first ratchet pawl (73) and a second ratchet pawl (74); the box (80) is arranged at the rear of the base (10); a plurality of the fixing rods (81) are fixedly connected in the box (80); a mounting frame (82) is fixedly connected to the side of each fixing rod (81) in the box (80); the force-bearing rod (70) is rotatably connected to the fixing rod (81); the ratchet (72) is rotatably connected to the middle part of the mounting frame (82); one end of the force-bearing rod (70) is connected to the fixing rod (81); The bottom of the lower clamp (11) is in contact with each other, the other end of the force-bearing rod (70) is indirectly connected to the ratchet (72) through the connecting rod (71), the middle part of the connecting rod (71) is rotatably connected to the top of the mounting frame (82), one end of the connecting rod (71) is rotatably connected to the force-bearing rod (70), the other end of the connecting rod (71) is rotatably connected to the ratchet 1 (73), the middle rotating shaft of the connecting rod (71) is rotatably connected to the ratchet 2 (74), and the ratchet 1 (73) and the ratchet 2 (74) are both engaged with the ratchet (72).

3. A dry-type transformer according to claim 2, characterized in that: The transmission mechanism also includes a rotating ring (75) and a connecting frame (77). The rotating ring (75) is fixedly connected to the rotating shaft of the ratchet (72). A fixing column (76) is fixedly connected to the rotating ring (75). The reciprocating pump (60) is fixedly connected to the upper part of the box body (80) in a through-type manner. The lower end of the piston rod of the reciprocating pump (60) is fixedly connected to the connecting frame (77). The fixing column (76) is movably connected to the connecting frame (77).

4. A dry-type transformer according to claim 3, characterized in that: Each of the reciprocating pumps (60) is provided with a liquid inlet and a liquid outlet, and one-way valves are installed inside the liquid inlet and the liquid outlet.

5. A dry-type transformer according to claim 4, characterized in that: A cooling plate (31) is obliquely provided inside the first water tank (30), and an inlet and an outlet are respectively provided at a high position and a low position of the cooling plate (31), so that water flowing into the cooling plate (31) from the inlet can naturally flow out from the outlet, and a baffle (41) is provided inside the second water tank (40), and the baffle (41) divides the interior of the second water tank (40) into chamber one and chamber two, wherein the height of the baffle (41) is lower than the top surface of the second water tank (40), so that the water in chamber one can naturally overflow into chamber two when there is surplus water.

6. A dry-type transformer according to claim 5, characterized in that: The water inlet pipe includes a water inlet pipe 1 (50) and multiple groups of water inlet pipes 2 (51). One end of the water inlet pipe 1 (50) is connected to the liquid inlet of the reciprocating pump (60) through multiple branches, and the other end of the water inlet pipe 1 (50) is connected to the outlet of the cooling plate (31). The number of groups of water inlet pipes 2 (51) is the same as the number of reciprocating pumps (60). One end of each group of water inlet pipes 2 (51) is joined and connected to the liquid outlet of a reciprocating pump (60). The other end of each group of water inlet pipes 2 (51) is connected to the chamber 1 in the second water tank (40). The two ends of the return pipe (52) are respectively connected to the inlet of the cooling plate (31) and the chamber 2 in the second water tank (40).

7. A dry-type transformer according to claim 6, characterized in that: The number of the second water inlet pipes (51) is the same as the number of the heat dissipation pipes (21), and the middle section of each second water inlet pipe (51) is located inside a pipe of the heat dissipation pipe (21).

8. A dry-type transformer according to claim 7, characterized in that: A spring (90) is connected between one end of the stress-bearing rod (70) away from the base (10) and the fixing rod (81), and the spring (90) is used to assist the vibration of the stress-bearing rod (70).

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