Impregnated paper type power transformer capable of preventing explosion

Abstract

The invention discloses a glue impregnated paper type power transformer capable of preventing explosion, and belongs to the technical field of power transformers, the glue impregnated paper type power transformer comprises a bottom plate, a transmission shell is fixedly mounted at the top end of the bottom plate, and a first winding and a second winding which are electrically connected are arranged in the transmission shell; the outer surface of the first winding and the outer surface of the second winding are both coated with impregnated paper films, a drying mechanism with a U-shaped pipe is arranged in the conveying shell, and the drying mechanism comprises the U-shaped pipe which is installed in the conveying shell and used for conducting hot air drying on the impregnated paper films. The liquid guide pipe with the repairing liquid is arranged in the U-shaped pipe, the repairing liquid can be slowly introduced into the surface of the impregnated paper, possible tiny cracks or damage can be repaired in time, the integrity and adhesion of the impregnated paper are kept, the service life of the impregnated paper is prolonged through the automatic repairing mechanism, and the overall stability of the power transformer is improved.

Description

Technical Field

[0001] The invention relates to the technical field of power transformers, and in particular to an explosion-proof glue-impregnated paper type power transformer. Background Art

[0002] In the power system, the power transformer is an important electrical equipment, which is mainly used to convert high voltage or large current into low voltage or small current for measurement, protection and control. However, during the operation of the power transformer, due to the long-term exposure to high voltage and large current, its internal winding is prone to failure due to aging of insulation materials, moisture or mechanical damage, etc., and even cause explosion accidents in severe cases, posing a serious threat to the safe operation of the power system. Summary of the invention

[0003] The object of the present invention is to provide an explosion-proof rubber-impregnated paper type power transformer to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an explosion-proof glue-impregnated paper type power transformer, comprising a base plate, a transmission shell fixedly installed on the top of the base plate, a first winding and a second winding electrically connected are arranged inside the transmission shell, and the outer surfaces of the first winding and the second winding are both covered with a glue-impregnated paper film, a drying mechanism with a U-shaped tube is arranged inside the transmission shell, the drying mechanism comprises a U-shaped tube installed inside the transmission shell for hot air drying the glue-impregnated paper film, a plurality of heat-conducting tubes are connected and installed on the surface of the U-shaped tube close to the first winding and the second winding, a hot air pump is fixedly installed on the outer surface of the transmission shell, the output end of the hot air pump is connected to one end of the U-shaped tube, a repair component with a liquid guide tube is arranged inside the U-shaped tube, the liquid guide tube is fixedly installed inside the U-shaped tube, and the end of the liquid guide tube close to the heat-conducting tube is connected and installed with a conical tube for extruding repair liquid to repair the glue-impregnated paper film.

[0005] As a preferred technical solution of the present invention, the output end of the hot air pump is connected to one end of the U-shaped tube and an air inlet pipe is installed, and the input end of the hot air pump is connected to the free end of the U-shaped tube and an air outlet pipe is installed.

[0006] As a preferred technical solution of the present invention, a liquid storage cylinder for repairing glue-impregnated paper film is fixedly installed on the outer surface of the transmission shell, the output end of the liquid storage cylinder is connected to the liquid guide tube, and one end of the liquid storage cylinder is installed with a pressure knob for pressurizing the solution inside the liquid storage cylinder.

[0007] As a preferred technical solution of the present invention, a support frame for supporting the catheter is provided between the U-shaped tube and the catheter, and the interior of the conical tube is filled with a filter for filtering the repair fluid.

[0008] As a preferred technical solution of the present invention, a spiral plate for spiral air intake is fixedly installed inside the heat conduction tube, and the tapered tube is located at the top of the spiral plate.

[0009] As a preferred technical solution of the present invention, buffer components with top plates are arranged on the outer surfaces of the first winding and the second winding. The two top plates are rotatably installed on the outer surfaces of the first winding and the second winding. A second gear is fixedly installed on the outer surface of the top plate. A motor is fixedly installed inside the transmission housing. A first gear is fixedly installed on the output shaft of the motor. The first gear meshes with the second gear.

[0010] As a preferred technical solution of the present invention, a stop bar is fixedly installed at the top of the top plate, and a groove for liquid conduction is formed at the top of the top plate close to the first winding.

[0011] As a preferred technical solution of the present invention, an adsorption mechanism with resin columns is arranged inside the transmission housing. A long cylinder is fixedly installed inside the transmission housing. A limiting plate is fixedly installed at the top of the long cylinder. A communication groove is formed on the surface of the long cylinder close to the inner cavity of the transmission housing. A moving plate is slidably installed inside the long cylinder. The resin column for adsorbing impurities and dust inside the transmission housing is fixedly installed at the top of the moving plate.

[0012] As a preferred technical solution of the present invention, an air bag for thermal expansion effect is fixedly installed at the bottom end of the moving plate. The inner bottom wall of the long cylinder is installed with a fixing plate by screws. A spring is fixedly installed between the fixing plate and the air bag. A plurality of through holes are formed at the top of the moving plate.

[0013] As a preferred technical solution of the present invention, a conductive component for power transmission is fixedly installed at the top of the bottom plate close to the transmission housing. The conductive component is electrically connected to the first winding and the second winding. The first winding is provided with thick wires and few turns, and the second winding is provided with thin wires and many turns.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. By wrapping the resin-impregnated paper on the surface of the winding, the explosion-proof ability of the power transformer is significantly improved. As an excellent insulating material, the resin-impregnated paper can effectively isolate the winding from the external environment, prevent explosion accidents caused by electric sparks or arcs. At the same time, the heat conduction tube transports the heat flow to the surface of the resin-impregnated paper to keep it dry, further enhancing the explosion-proof effect.

[0016] 2. By arranging a liquid guide tube with repair liquid inside the U-shaped tube, the present invention can slowly introduce the repair liquid onto the surface of the resin-impregnated paper, timely repair possible tiny cracks or damages, thereby maintaining the integrity and adhesiveness of the resin-impregnated paper. This automatic repair mechanism extends the service life of the resin-impregnated paper and improves the overall stability of the power transformer.

[0017] 3. The present invention buffers the repair liquid through the top plate, enabling the repair liquid to flow onto the surface of the resin-impregnated paper in a more uniform and gentle manner, avoiding the impact damage that the direct dripping of the repair liquid may cause to the resin-impregnated paper. This design not only improves the repair quality but also protects the film structure on the surface of the resin-impregnated paper.

[0018] 4. By installing resin columns inside the transmission housing, the present invention can not only effectively adsorb odors but also further enhance the overall insulation effect of the device. At the same time, when the heat flow inside is too large, the resin columns will move, thereby guiding the heat to dissipate more effectively, improving the heat dissipation performance of the transformer and ensuring the long-term stable operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic side view structure diagram of the present invention;

[0021] Figure 3 is a schematic diagram of the internal structure of the transmission housing of the present invention;

[0022] Figure 4 is a schematic diagram of the structure of the first winding of the present invention;

[0023] Figure 5 is a schematic diagram of the U-shaped tube structure of the present invention;

[0024] Figure 6 is a schematic cross-sectional structure diagram of the U-shaped tube of the present invention;

[0025] Figure 7 is a schematic diagram of the structure of the buffer assembly of the present invention;

[0026] Figure 8 is a schematic diagram of the internal structure of the long tube of the present invention.

[0027] In the figure: 1. Bottom plate; 2. Conductive component; 3. Transmission housing; 4. First winding; 5. Second winding; 6. Drying mechanism; 61. U-shaped tube; 62. Heat conduction tube; 63. Hot air pump; 64. Air inlet pipe; 65. Air outlet pipe; 66. Repair component; 661. Liquid storage cylinder; 662. Liquid guide pipe; 663. Support frame; 664. Filter element; 665. Conical tube; 666. Spiral plate; 67. Buffer component; 671. Motor; 672. First gear; 673. Second gear; 674. Top plate; 675. Groove; 676. Stop bar; 7. Adsorption mechanism; 71. Fixed plate; 72. Spring; 73. Airbag; 74. Moving plate; 75. Resin column; 76. Limiting plate; 77. Long tube; 78. Through hole; 79. Communication groove. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figure 1-8 , the present invention provides a resin-impregnated paper type power transformer for preventing explosion, including a bottom plate 1. A transmission housing 3 is fixedly installed at the top end of the bottom plate 1. An electrically connected first winding 4 and a second winding 5 are arranged inside the transmission housing 3, and resin-impregnated paper films are coated on the outer surfaces of the first winding 4 and the second winding 5.

[0030] Among them, the power transformer uses resin-impregnated paper to coat the surfaces of the first winding 4 and the second winding 5 to improve its explosion-proof performance.

[0031] In the technical solution of the embodiment of the present application, a drying mechanism 6 with a U-shaped tube 61 is arranged inside the transmission housing 3. The drying mechanism 6 includes a U-shaped tube 61 installed inside the transmission housing 3 for hot air drying of the resin-impregnated paper film. A plurality of heat conduction tubes 62 are connected and installed on the surfaces of the U-shaped tube 61 close to the first winding 4 and the second winding 5. A hot air pump 63 is fixedly installed on the outer surface of the transmission housing 3, and the output end of the hot air pump 63 is connected to one end of the U-shaped tube 61.

[0032] Among them, a drying mechanism 6 with a U-shaped tube 61 is arranged inside the transmission housing 3. The hot air is provided by the hot air pump 63, and the hot air dries the resin-impregnated paper film through the U-shaped tube 61 and its connected heat conduction tubes 62. The design of the drying mechanism 6 ensures the drying of the surface layer of the resin-impregnated paper, avoids the performance degradation caused by moisture, and thus ensures the long-term stable explosion-proof effect of the power transformer.

[0033] In the technical solution of the embodiment of the present application, a repair component 66 with a liquid guide pipe 662 is arranged inside the U-shaped pipe 61. The liquid guide pipe 662 is fixedly installed inside the U-shaped pipe 61. One end of the liquid guide pipe 662 close to the heat conduction pipe 62 is connected and installed with a tapered pipe 665 for extruding repair liquid to repair the glue-impregnated paper film. A liquid storage cylinder 661 for the glue-impregnated paper film is fixedly installed on the outer surface of the transmission housing 3. The output end of the liquid storage cylinder 661 is connected and installed with the liquid guide pipe 662. A pressure knob for pressurizing the solution inside the liquid storage cylinder 661 is installed at one end of the liquid storage cylinder 661.

[0034] Among them, a repair component 66 with a liquid guide pipe 662 is arranged inside the U-shaped pipe 61. The liquid storage cylinder 661 can be pressurized through the pressure knob, so as to export the repair liquid inside the liquid storage cylinder 661 for extruding the repair liquid to repair the glue-impregnated paper film when needed.

[0035] Among them, the main components of the repair liquid may include silicone, methacrylate, and epoxy resin. These components have good adhesion, wear resistance, and corrosion resistance. During the repair process of the glue-impregnated paper film, the repair liquid can fill the damaged part, form a protective layer, restore the integrity and performance of the glue-impregnated paper film, can significantly repair the damage of the glue-impregnated paper film, improve the waterproof and dustproof performance, etc., and extend the service life.

[0036] In some embodiments, an air inlet pipe 64 is connected and installed between the output end of the hot air pump 63 and one end of the U-shaped pipe 61, and an air outlet pipe 65 is connected and installed between the input end of the hot air pump 63 and the free end of the U-shaped pipe 61.

[0037] Among them, the output end of the hot air pump 63 is connected to the U-shaped pipe 61 through the air inlet pipe 64, and the input end is connected to the free end of the U-shaped pipe 61 through the air outlet pipe 65 to form a hot air circulation. The hot air circulation ensures the uniform distribution of heat, improves the drying efficiency, increases the utilization rate of the heat flow, and also reduces the damage to the environment caused by the discharge of the heat flow.

[0038] In some embodiments, a support frame 663 for supporting the liquid guide pipe 662 is arranged between the U-shaped pipe 61 and the liquid guide pipe 662, and a filter element 664 for filtering the repair liquid is filled inside the tapered pipe 665.

[0039] Among them, the support frame 663 is used to support the liquid guide pipe 662 to ensure its stability inside the U-shaped pipe 61. The use of the filter element 664 can filter the repair liquid, ensure the purity of the repair liquid, and improve the repair effect.

[0040] In some embodiments, a spiral plate 666 for spiral air intake is fixedly installed inside the heat conduction pipe 62, and the tapered pipe 665 is located at the top of the spiral plate 666.

[0041] Among them, a spiral plate 666 is fixedly installed inside the heat conduction tube 62 for spiral air intake to enhance the flow effect of hot air. The position design of the tapered tube 665 ensures the accurate extrusion of the repair liquid, improving the accuracy of repair.

[0042] In some embodiments, buffer assemblies 67 with top plates 674 are provided on the outer surfaces of the first winding 4 and the second winding 5. The two top plates 674 are rotatably installed on the outer surfaces of the first winding 4 and the second winding 5. A second gear 673 is fixedly installed on the outer surface of the top plate 674. A motor 671 is fixedly installed inside the transmission housing 3. A first gear 672 is fixedly installed on the output shaft of the motor 671, and the first gear 672 meshes with the second gear 673.

[0043] Among them, by starting the motor 671, the motor 671 drives the first gear 672 to rotate, the first gear 672 drives the second gear 673 to rotate, and the second gear 673 drives the top plate 674 to rotate. At this time, the top plate 674 can buffer the repair liquid dropped by the tapered tube 665, so that the repair liquid slowly flows out, avoiding damage to the surface film of the presspahn caused by the gravity of the repair liquid.

[0044] In some embodiments, a stop bar 676 is fixedly installed at the top end of the top plate 674, and a liquid guiding groove 675 for guiding liquid is opened at the top end of the top plate 674 close to the first winding 4.

[0045] Among them, when the top plate 674 buffers the repair liquid, at this time, the repair liquid is guided by the groove 675 to uniformly flow onto the surface of the presspahn. The design of the groove 675 on the top plate 674 ensures the uniform distribution of the repair liquid, improving the repair effect. The design of the stop bar 676 enhances the guiding effect of the repair liquid, ensuring the uniform distribution of the repair liquid.

[0046] In some embodiments, an adsorption mechanism 7 with a resin column 75 is provided inside the transmission housing 3. A long cylinder 77 is fixedly installed inside the transmission housing 3. A limiting plate 76 is fixedly installed at the top end of the long cylinder 77. A communication groove 79 is opened on the surface of the long cylinder 77 close to the inner cavity of the transmission housing 3. A moving plate 74 is slidably installed inside the long cylinder 77, and the resin column 75 for adsorbing impurities and dust inside the transmission housing 3 is fixedly installed at the top end of the moving plate 74.

[0047] Among them, the resin column 75 is used to adsorb the odor and impurities inside the transmission housing 3. When the heat flow inside the transmission housing 3 is too large, the airbag 73 expands due to heat, pushing the moving plate 74 and the resin column 75 upward. The movement through the communication groove 79 can enhance the heat dissipation effect, and the use of the resin column 75 improves the overall insulation effect of the device and reduces the failure risk caused by poor insulation.

[0048] In some embodiments, an airbag 73 for thermal expansion is fixedly installed at the bottom end of the moving plate 74. A fixing plate 71 is installed on the inner bottom wall of the long cylinder 77 by screws. A spring 72 is fixedly installed between the fixing plate 71 and the airbag 73. A plurality of through holes 78 are formed in the top end of the moving plate 74.

[0049] Among them, a plurality of through holes 78 are formed in the top end of the moving plate 74 to enhance the contact area between the resin column 75 and the air, improve the adsorption efficiency, and the spring 72 is used to restore the resin column 75 to its original position after the airbag 73 cools down.

[0050] In some embodiments, a conductive component 2 for transmitting electricity is fixedly installed at the top end of the bottom plate 1 close to the transmission housing 3. The conductive component 2 is electrically connected to the first winding 4 and the second winding 5. The first winding 4 is provided with thick wires and fewer turns, and the second winding 5 is provided with thin wires and more turns.

[0051] Among them, the conductive component 2 is used to transmit electricity and is electrically connected to the first winding 4 and the second winding 5. The first winding 4 is provided with thick wires and fewer turns, and the second winding 5 is provided with thin wires and more turns to meet different power transmission requirements and improve the applicability of the device.

[0052] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all covered by the protection scope of the present invention.

Claims

1. An explosion-proof rubber-impregnated paper type power transformer, comprising a bottom plate (1), characterized in that: A transmission shell (3) is fixedly mounted on the top of the bottom plate (1), a first winding (4) and a second winding (5) which are electrically connected are arranged inside the transmission shell (3), and the outer surfaces of the first winding (4) and the second winding (5) are both covered with a glue-impregnated paper film; A drying mechanism (6) with a U-shaped tube (61) is arranged inside the transmission shell (3), and the drying mechanism (6) comprises a U-shaped tube (61) installed inside the transmission shell (3) and used for hot air drying the glue-impregnated paper film, a plurality of heat-conducting tubes (62) are installed on the surface of the U-shaped tube (61) close to the first winding (4) and the second winding (5), and a hot air pump (63) is fixedly installed on the outer surface of the transmission shell (3), and the output end of the hot air pump (63) is connected to one end of the U-shaped tube (61); A repair component (66) with a liquid guide tube (662) is arranged inside the U-shaped tube (61). The liquid guide tube (662) is fixedly installed inside the U-shaped tube (61). One end of the liquid guide tube (662) close to the heat conduction tube (62) is connected to a conical tube (665) installed thereon for extruding a repair liquid and a repair glue-impregnated paper film.

2. The explosion-proof rubber-impregnated paper type power transformer according to claim 1, characterized in that: The output end of the hot air pump (63) is connected to one end of the U-shaped tube (61) and an air inlet pipe (64) is installed thereon. The input end of the hot air pump (63) is connected to the free end of the U-shaped tube (61) and an air outlet pipe (65) is installed thereon.

3. The explosion-proof rubber-impregnated paper type power transformer according to claim 1, characterized in that: A liquid storage cylinder (661) for repairing glue-impregnated paper film is fixedly mounted on the outer surface of the transmission housing (3); the output end of the liquid storage cylinder (661) is connected to the liquid guide tube (662); and one end of the liquid storage cylinder (661) is mounted with a pressure knob for pressurizing the solution inside the liquid storage cylinder (661).

4. The explosion-proof rubber-impregnated paper type power transformer according to claim 1, characterized in that: A support frame (663) for supporting the liquid guiding tube (662) is provided between the U-shaped tube (61) and the liquid guiding tube (662), and a filter element (664) for filtering the repair liquid is filled inside the conical tube (665).

5. The explosion-proof rubber-impregnated paper type power transformer according to claim 1, characterized in that: A spiral plate (666) for spiral air intake is fixedly installed inside the heat conduction pipe (62), and the cone tube (665) is located at the top end of the spiral plate (666).

6. The explosion-proof rubber-impregnated paper type power transformer according to claim 1, characterized in that: The outer surfaces of the first winding (4) and the second winding (5) are both provided with a buffer assembly (67) with a top plate (674); the two top plates (674) are rotatably mounted on the outer surfaces of the first winding (4) and the second winding (5); a second gear (673) is fixedly mounted on the outer surface of the top plate (674); a motor (671) is fixedly mounted inside the transmission housing (3); a first gear (672) is fixedly mounted on the output shaft of the motor (671); and the first gear (672) is meshed with the second gear (673).

7. The explosion-proof rubber-impregnated paper type power transformer according to claim 6, characterized in that: A blocking bar (676) is fixedly mounted on the top of the top plate (674), and a groove (675) for guiding liquid is provided on the top of the top plate (674) near the top of the first winding (4).

8. The explosion-proof rubber-impregnated paper type power transformer according to claim 1, characterized in that: The interior of the transmission shell (3) is provided with an adsorption mechanism (7) with a resin column (75); a long cylinder (77) is fixedly installed inside the transmission shell (3); a limit plate (76) is fixedly installed on the top of the long cylinder (77); a connecting groove (79) is provided on the surface of the long cylinder (77) close to the internal cavity of the transmission shell (3); a movable plate (74) is slidably installed inside the long cylinder (77); and the resin column (75) for adsorbing impurities and dust inside the transmission shell (3) is fixedly installed on the top of the movable plate (74).

9. The explosion-proof rubber-impregnated paper type power transformer according to claim 8, characterized in that: An air bag (73) for thermal expansion is fixedly installed at the bottom end of the movable plate (74), a fixing plate (71) is fixedly installed on the inner bottom wall of the long tube (77) by screws, a spring (72) is fixedly installed between the fixing plate (71) and the air bag (73), and a plurality of through holes (78) are opened at the top end of the movable plate (74).

10. The explosion-proof rubber-impregnated paper type power transformer according to claim 1, characterized in that: A conductive component (2) for transmitting electric power is fixedly mounted on the bottom plate (1) near the top of the transmission housing (3); the conductive component (2) is electrically connected to a first winding (4) and a second winding (5); the first winding (4) is provided with a thick conductor and a small number of turns, and the second winding (5) is provided with a thin conductor and a large number of turns.

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