Energy-saving and environment-friendly dry-type transformer

Abstract

The invention relates to the technical field of transformers, in particular to an energy-saving and environment-friendly dry-type transformer which comprises a base, an inner-layer coil, an outer-layer coil, a supporting frame, a spacer, a cooling part and a first fan, the inner-layer coil is arranged on the base, the outer-layer coil is arranged outside the inner-layer coil, and the supporting frame is used for supporting the inner-layer coil and the outer-layer coil. The spacer is provided with an air outlet hole, the spacer is arranged between the inner-layer coil and the outer-layer coil and divides an upper cooling cavity and a lower cooling cavity, the first fan is arranged on the base, so that airflow enters the air outlet hole from the lower cooling cavity at the bottom, and the cooling part is communicated with the air outlet hole and the upper cooling cavity. Therefore, airflow is promoted to enter from the lower cooling cavity at the bottom and is guided to the cooling cavity above through the air outlet holes in the spacer. Therefore, the heat can be quickly absorbed by the medium in the cooling cavity, and then the heat of the upper coil is dissipated through the upper cooling cavity, so that the purpose of high-efficiency cooling is achieved.

Description

Technical Field

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

[0002] A dry-type transformer is an electrical device that does not require insulating oil. It uses air or other non-liquid cooling media for heat dissipation and insulation, and usually uses solid insulating materials such as resin casting or epoxy resin. Compared with oil-immersed transformers, dry-type transformers have higher safety and lower maintenance costs, and are suitable for places with high requirements for fire protection and environmental protection, such as commercial buildings, hospitals and data centers.

[0003] The hardware structure of the dry-type transformer mainly includes the following key parts: The iron core is usually made of stacked silicon steel sheets to provide a magnetic circuit and reduce eddy current losses. The winding is the energy conversion part of the transformer, which is wound by wire (usually copper or aluminum) and is divided into primary winding and secondary winding. The primary winding is connected to the power supply, while the secondary winding is connected to the load. The insulation system of the dry-type transformer is one of the important features that distinguishes it from the oil-immersed transformer. The insulating material is usually in solid form, such as epoxy resin casting, glass fiber reinforced plastic (FRP), polyester film, etc. These materials can not only provide good electrical insulation, but also play a certain mechanical protection role and help dissipate heat.

[0004] The cooling method of dry-type transformers mainly relies on air circulation. The existing forced air cooling adopts the method of arranging a fan at the bottom of the transformer so that air flows through the gap formed by the coil to dissipate heat.

[0005] However, the airflow flowing to the top in this way is often at a higher temperature, which affects the heat dissipation effect of the top, making the top coil prone to damage due to long-term operation in a high-temperature environment. Summary of the invention

[0006] The purpose of the present invention is to provide an energy-saving and environmentally friendly dry-type transformer, which is designed to promote airflow to enter from the lower cooling cavity at the bottom and guide it to the upper cooling cavity through the air outlet holes on the spacer. The design of the cooling part further optimizes the air flow path to ensure that the heat can be quickly absorbed by the medium in the cooling cavity, and then dissipated to the upper coil through the upper cooling cavity, achieving the purpose of efficient cooling.

[0007] To achieve the above-mentioned objectives, the present invention provides an energy-saving and environmentally friendly dry-type transformer, comprising a base, an inner coil, an outer coil and a support frame, wherein the inner coil is arranged on the base, the outer coil is arranged outside the inner coil, and the support frame is used to support the inner coil and the outer coil, and further comprises a partition, a cooling portion and a first fan, wherein the partition has an air outlet, and the partition is arranged between the inner coil and the outer coil to divide an upper cooling chamber and a lower cooling chamber, and the first fan is arranged on the base so that airflow enters the air outlet from the lower cooling chamber at the bottom, and the cooling portion is connected to the air outlet and to the upper cooling chamber.

[0008] Wherein, the spacer includes a spacer body and a positioning column, and the positioning column is fixed above the spacer body.

[0009] Wherein, the diaphragm further comprises a sealing ring, which is fixedly connected to the diaphragm body and is located between the diaphragm body and the cooling part.

[0010] Wherein, the cooling part includes a cooling cavity, a pressure plate, a clamping spring, a heat sink and a circulation pump, the cooling cavity has an air inlet pipe, an exhaust pipe, a liquid inlet pipe and a liquid outlet pipe, the air inlet pipe is connected with the air outlet, the exhaust pipe is connected with the upper cooling cavity, the liquid inlet pipe is connected with the circulation pump, the heat sink is connected with the circulation pump, the liquid outlet pipe is connected with the heat sink, and the pressure plate presses the cooling cavity onto the spacer body through the clamping spring.

[0011] Wherein, the cooling unit further includes a second fan and an adjustment plate, wherein the adjustment plate is rotatably arranged on the top of the outer coil, and the second fan is fixed to the adjustment plate.

[0012] Wherein, the heat dissipation box has a plurality of heat dissipation fins, and the plurality of heat dissipation fins are distributed on the heat dissipation box.

[0013] Among them, the first fan includes a fan body, a connecting pipe and an air guide plate, the air guide plate has a plurality of air holes, the air guide plate is arranged at the bottom of the inner coil and the outer coil, the connecting pipe is connected to the air guide plate, and the fan body is connected to the connecting pipe.

[0014] Wherein, the first fan further includes a filter plate, and the filter plate is connected to the fan body and is located on one side of the fan body.

[0015] The present invention discloses an energy-saving and environmentally friendly dry-type transformer. The inner coil is directly mounted on the base, while the outer coil is surrounded by the outside of the inner coil. The inner coil and the outer coil are respectively used as high-voltage coils and low-voltage coils, and the support frame is used to fix and support the inner and outer coils to ensure that they can maintain a stable position during operation. In addition, the design also introduces a key component, the spacer. These spacers are provided with air outlets and are arranged between the inner coil and the outer coil, thereby effectively dividing the internal space into two upper and lower cooling chambers, namely, the upper cooling chamber and the lower cooling chamber. Such a design is conducive to improving the air flow efficiency and thus enhancing the heat dissipation effect. A first fan is also installed on the base, and its working principle is to promote the air flow to enter from the lower cooling chamber at the bottom and guide it to the upper cooling chamber through the air outlet on the spacer. The design of the cooling part further optimizes the air flow path. It is not only connected to the air outlet on the spacer, but also communicates with the upper cooling chamber to ensure that the heat can be quickly absorbed by the medium in the cooling chamber, and then the upper coil is dissipated through the upper cooling chamber to achieve the purpose of efficient cooling. This structural design not only improves the heat dissipation performance of the dry-type transformer and reduces energy loss, but also better meets the requirements of modern environmental protection and energy saving, helps to extend the service life of the equipment and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural diagram of an energy-saving and environment-friendly dry-type transformer of the present invention.

[0018] Figure 2 It is the right structural diagram of an energy-saving and environmentally friendly dry-type transformer of the present invention.

[0019] Figure 3 It is a partial first cross-sectional structural diagram of an energy-saving and environmentally friendly dry-type transformer of the present invention.

[0020] Figure 4 yes Figure 3 A partial enlargement of detail A.

[0021] Figure 5 It is a cross-sectional structural diagram along the cooling part of an energy-saving and environmentally friendly dry-type transformer of the present invention.

[0022] Figure 6 It is a structural diagram of the temperature sensor, temperature calculation unit and control unit of the present invention.

[0023] Base 101, inner coil 102, outer coil 103, support frame 104, spacer 105, cooling part 106, first fan 107, air outlet 108, spacer body 109, positioning column 110, sealing ring 111, cooling cavity 112, pressure plate 113, compression spring 114, heat sink 115, circulation pump 116, second fan 117, adjustment plate 118, heat sink 119, fan body 120, connecting pipe 121, air guide plate 122, filter plate 123, filter plate body 124, scraper 125, blade 126, temperature sensor 127, temperature calculation unit 128, control unit 129, air inlet pipe 130, exhaust pipe 131, liquid inlet pipe 132, liquid outlet pipe 133. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0026] See also Figure 1 to Figure 6 The present invention provides an energy-saving and environmentally friendly dry-type transformer, including a base 101, an inner coil 102, an outer coil 103 and a support frame 104, wherein the inner coil 102 is arranged on the base 101, and the outer coil 103 is arranged outside the inner coil 102, and the support frame 104 is used to support the inner coil 102 and the outer coil 103, and also includes a spacer 105, a cooling portion 106 and a first fan 107, wherein the spacer 105 has an air outlet 108, and the spacer 105 is arranged between the inner coil 102 and the outer coil 103 to divide an upper cooling cavity and a lower cooling cavity, and the first fan 107 is arranged on the base 101, so that airflow enters the air outlet 108 from the lower cooling cavity at the bottom, and the cooling portion 106 is connected with the air outlet 108 and is connected with the upper cooling cavity.

[0027] In this embodiment, an energy-saving and environmentally friendly dry-type transformer includes the following parts: a base 101, an inner coil 102, an outer coil 103, and a support frame 104. The inner coil 102 is directly mounted on the base 101, and the outer coil 103 surrounds the outside of the inner coil 102. The inner coil 102 and the outer coil 103 serve as a high-voltage coil and a low-voltage coil, respectively, and the support frame 104 is used to fix and support the inner and outer coils to ensure that they can maintain a stable position during operation.

[0028] In addition, the design also introduces a key component, the spacer 105. These spacers 105 are provided with air outlet holes 108 and are arranged between the inner coil 102 and the outer coil 103, thereby effectively dividing the internal space into two cooling chambers, namely, the upper cooling chamber and the lower cooling chamber. Such a design is conducive to improving the air flow efficiency and thus enhancing the heat dissipation effect.

[0029] A first fan 107 is also installed on the base 101. Its working principle is to promote airflow to enter from the lower cooling cavity at the bottom and guide it to the upper cooling cavity through the air outlet 108 on the spacer 105. The design of the cooling part 106 further optimizes the air flow path. It is not only connected to the air outlet 108 on the spacer 105, but also communicates with the upper cooling cavity to ensure that the heat can be quickly absorbed by the medium in the cooling cavity, and then dissipated to the upper coil through the upper cooling cavity to achieve the purpose of efficient cooling. Such a structural design not only improves the heat dissipation performance of the dry-type transformer and reduces energy loss, but also better meets the requirements of modern environmental protection and energy saving, which helps to extend the service life of the equipment and reduce maintenance costs.

[0030] The spacer 105 includes a spacer body 109 and a positioning column 110 , and the positioning column 110 is fixed above the spacer body 109 .

[0031] The spacer 105 is composed of a spacer body 109 and a positioning column 110. The positioning column 110 is fixed above the spacer body 109 to accurately position the spacer 105 and ensure its stability inside the dry-type transformer.

[0032] The spacer 105 further includes a sealing ring 111 , which is fixedly connected to the spacer body 109 and is located between the spacer body 109 and the cooling portion 106 .

[0033] In addition, the diaphragm 105 further includes a sealing ring 111, which is fixedly connected to the diaphragm body 109 and is located between the diaphragm body 109 and the cooling portion 106 to prevent air leakage and ensure the sealing of the system.

[0034] The cooling part 106 includes a cooling cavity 112, a pressure plate 113, a compression spring 114, a heat sink 115 and a circulation pump 116. The cooling cavity 112 has an air inlet pipe, an exhaust pipe, a liquid inlet pipe and a liquid outlet pipe. The air inlet pipe is connected to the air outlet 108, the exhaust pipe is connected to the upper cooling cavity, the liquid inlet pipe is connected to the circulation pump 116, the heat sink 115 is connected to the circulation pump 116, the liquid outlet pipe is connected to the heat sink 115, and the pressure plate 113 presses the cooling cavity 112 onto the spacer body 109 through the compression spring 114.

[0035] The pressing spring 114 can provide support for the pressing plate 113, so that the pressing plate 113 can press the cooling cavity 112 onto the partition body 109, and then the high-temperature gas of the lower cooling cavity can be introduced through the air inlet pipe, and after being cooled by the cooling medium in the cooling cavity, it is discharged into the upper cooling cavity through the exhaust pipe. The circulating pump 116 can drive the cooling medium in the heat sink 115 to circulate, so that the cooling effect is better.

[0036] The cooling unit 106 further includes a second fan 117 and an adjustment plate 118 . The adjustment plate 118 is rotatably disposed on the top of the outer coil, and the second fan 117 is fixed to the adjustment plate 118 .

[0037] The adjustment plate 118 is rotatably disposed on the top of the outer coil 103, and the second fan 117 is fixed on the adjustment plate 118, and the wind direction or wind volume can be adjusted as needed to achieve a more efficient cooling effect.

[0038] The heat sink 115 has a plurality of heat sinks 119 , and the plurality of heat sinks 119 are distributed on the heat sink 115 .

[0039] A plurality of heat sinks 119 are designed inside the heat sink 115 . The heat sinks 119 are evenly distributed on the entire heat sink 115 , which helps to improve the heat dissipation efficiency.

[0040] The first fan 107 includes a fan body 120, a connecting pipe 121 and an air guide plate 122, the air guide plate 122 has a plurality of air holes, the air guide plate 122 is arranged at the bottom of the inner coil and the outer coil, the connecting pipe 121 is connected to the air guide plate 122, and the fan body 120 is connected to the connecting pipe 121.

[0041] By providing the connecting pipe 121, the airflow generated by the fan body 120 can completely enter the air guide plate 122, and be evenly distributed to the lower cooling cavity through the multiple air holes provided on the air guide plate 122, so as to achieve a better heat dissipation effect.

[0042] The first fan 107 further includes a filter plate 123 . The filter plate 123 is connected to the fan body 120 and is located at one side of the fan body 120 .

[0043] The filter plate 123 can filter impurities entering the fan body 120 to prevent them from entering the coil and accumulating to affect the heat dissipation effect.

[0044] The filter plate 123 includes a filter plate body 124 , a scraper 125 and a blade 126 . The scraper 125 is rotatably connected to the filter plate body 124 and is located on one side of the filter plate body 124 . The blade 126 is fixedly connected to the scraper 125 and is located on one side of the scraper 125 .

[0045] When air flows in, the blade 126 drives the scraper 125 to rotate on one side of the filter plate body 124 to scrape off impurities on the filter plate body 124 to avoid blockage, making it more convenient to use.

[0046] The cooling unit 106 also includes a temperature sensor 127, a temperature calculation unit 128 and a control unit 129. The temperature sensor 127 is arranged between the inner coil 102 and the outer coil 103. The temperature calculation unit 128 is connected to the temperature sensor 127. The control unit 129 is connected to the temperature calculation unit 128 and the fan body 120.

[0047] In order to further improve the intelligence and response speed of the system, the cooling unit 106 is also integrated with a temperature sensor 127, a temperature calculation unit 128 and a control unit 129. The temperature sensor 127 is arranged between the inner coil 102 and the outer coil 103, and is responsible for real-time monitoring of temperature changes. The temperature calculation unit 128 is connected to the temperature sensor 127 and can process temperature data. The control unit 129 is connected to the temperature calculation unit 128 and the fan body 120, and automatically adjusts the working state of the fan according to the calculated temperature information to maintain the optimal operating conditions of the system. This can not only improve the heat dissipation efficiency of the system, but also effectively reduce energy consumption and achieve the goal of energy saving and environmental protection.

[0048] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. An energy-saving and environmentally friendly dry-type transformer, comprising a base, an inner coil, an outer coil and a support frame, wherein the inner coil is arranged on the base, the outer coil is arranged outside the inner coil, and the support frame is used to support the inner coil and the outer coil, characterized in that: It also includes a partition, a cooling part and a first fan, the partition has an air outlet, the partition is arranged between the inner coil and the outer coil to divide the upper cooling cavity and the lower cooling cavity, the first fan is arranged on the base, so that the air flow enters the air outlet from the lower cooling cavity at the bottom, the cooling part is connected with the air outlet, and is connected with the upper cooling cavity.

2. The energy-saving and environmentally friendly dry-type transformer according to claim 1, characterized in that: The spacer includes a spacer body and a positioning column, and the positioning column is fixed above the spacer body.

3. The energy-saving and environmentally friendly dry-type transformer according to claim 2, characterized in that: The diaphragm further comprises a sealing ring, which is fixedly connected to the diaphragm body and is located between the diaphragm body and the cooling portion.

4. The energy-saving and environmentally friendly dry-type transformer according to claim 3, characterized in that: The cooling part includes a cooling cavity, a pressure plate, a compression spring, a heat sink and a circulation pump. The cooling cavity has an air inlet pipe, an exhaust pipe, a liquid inlet pipe and a liquid outlet pipe. The air inlet pipe is connected to the air outlet, the exhaust pipe is connected to the upper cooling cavity, the liquid inlet pipe is connected to the circulation pump, the heat sink is connected to the circulation pump, the liquid outlet pipe is connected to the heat sink, and the pressure plate presses the cooling cavity onto the spacer body through the compression spring.

5. The energy-saving and environmentally friendly dry-type transformer according to claim 4, characterized in that: The cooling unit further includes a second fan and an adjustment plate. The adjustment plate is rotatably disposed on the top of the outer coil, and the second fan is fixed to the adjustment plate.

6. The energy-saving and environmentally friendly dry-type transformer according to claim 5, characterized in that: The heat sink has a plurality of heat sinks, and the plurality of heat sinks are distributed on the heat sink.

7. The energy-saving and environmentally friendly dry-type transformer according to claim 6, characterized in that: The first fan includes a fan body, a connecting pipe and an air guide plate, the air guide plate has a plurality of air holes, the air guide plate is arranged at the bottom of the inner coil and the outer coil, the connecting pipe is connected to the air guide plate, and the fan body is connected to the connecting pipe.

8. The energy-saving and environmentally friendly dry-type transformer according to claim 7, characterized in that: The first fan further includes a filter plate, which is connected to the fan body and located on one side of the fan body.

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