Gas insulated transformer and working method thereof

Abstract

The invention belongs to the technical field of transformers, and particularly relates to a gas insulation transformer and a working method thereof.The gas insulation transformer comprises a radiator arranged on a path of a circulating pipeline, a control module and a power supply module, a plurality of cooling fans are arranged below the radiator, and a plurality of temperature sensors are arranged on the radiator to detect the temperature of the radiator in different areas; the control module is configured to compare the difference value of the temperatures detected by the different temperature sensors, and when the difference value is larger than 5 DEG C, the control module increases the output power of the fan below the radiator in the area with the high temperature so as to reduce the temperature of the radiator in the area; according to the gas insulation transformer and the working method thereof, the plurality of temperature sensors are respectively arranged in different areas of the radiator to detect the temperature difference of the areas with different heat dissipation effects, so that the output power of the fan in the area with higher temperature is increased to reduce the temperature of the area, and the temperatures of sulfur hexafluoride gas in different pipelines after heat dissipation are close to each other; the cooling efficiency of the transformer in the box body is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of transformers, and specifically relates to cooling, and in particular to a gas-insulated transformer and a working method thereof. Background Art

[0002] A gas-insulated transformer is a transformer that mainly uses sulfur hexafluoride (SF6) gas as an insulating and cooling medium. It has excellent fire and explosion-proof properties. When a gas-insulated transformer is used, a radiator needs to be arranged on one side to cool the SF6 gas in the pipeline. The low-temperature SF6 gas is then passed into the transformer box to reduce the temperature of the transformer.

[0003] The existing radiator used in the gas-insulated transformer is composed of several groups of radiating fins. A fan is arranged under the radiating fins to blow air to reduce the temperature of the radiating fins. However, the area around the radiating fins in the middle group is crowded, and its heat dissipation effect is not as good as that of the radiating fins in the edge group. The radiator cannot detect these temperatures and cannot be adjusted. This leads to a large temperature difference of sulfur hexafluoride gas in different pipelines after heat dissipation, thereby reducing the cooling efficiency of the transformer in the box.

[0004] Therefore, how to detect and adjust the temperatures of the middle group of heat sinks and the edge group of heat sinks is a technical problem that needs to be solved urgently in this field.

[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0006] The embodiments of the present disclosure at least provide a gas insulated transformer and a working method thereof.

[0007] In a first aspect, an embodiment of the present disclosure provides a gas-insulated transformer, comprising: a transformer box, the interior of which is filled with sulfur hexafluoride gas and connected to a circulation pipeline to circulate the gas in the box; The radiator is arranged on the path of the circulation pipeline, and a plurality of heat dissipation fans are arranged below the radiator; The radiator is provided with a plurality of temperature sensors to detect the temperature of the radiator in different areas; and The control module is electrically connected to the temperature sensor and the fan. The control module is configured to compare the difference in temperatures detected by different temperature sensors. When the difference is greater than 5°C, the control module increases the output power of the fan below the radiator in the higher temperature area to reduce the temperature of the radiator in this area.

[0008] In an optional embodiment, the heat sink includes a plurality of groups of heat sinks; Temperature sensors are provided on the outer walls of the two middle groups of heat sinks; Temperature sensors are also provided on the outer walls of the two groups of heat sinks at the edge; The temperature sensors detect the temperature of the heat sink at the center of their corresponding group.

[0009] In an optional embodiment, the temperature sensor includes a display screen and a detection unit; The detection portion extends inwardly along the side of the corresponding group to detect the temperature of the heat sink at the center of the group; The display screen displays the temperature detected by the detection unit.

[0010] In an optional embodiment, a fan is provided below each two groups of heat sinks; Any of the fans blows out airflow to cool down the two groups of heat sinks.

[0011] In an optional embodiment, the heat sink is parallel to the side wall of the transformer box; The circulation pipeline includes a plurality of heat dissipation pipelines symmetrically arranged up and down; The heat sink is arranged in the middle of the heat dissipation pipe to fully dissipate heat.

[0012] In an optional embodiment, each group of the heat sinks includes a plurality of heat sinks evenly spaced apart; The airflow blown out by the fan flows through the gaps between the heat sinks to cool the heat sinks.

[0013] In an optional embodiment, the circulation pipeline is connected to an air pump to achieve circulation of sulfur hexafluoride gas.

[0014] In a second aspect, the embodiments of the present disclosure further provide a gas-insulated transformer, comprising: a transformer box, the interior of which is filled with sulfur hexafluoride gas; A circulation pipeline is connected to the transformer box, and the circulation pipeline is connected to an air pump to circulate the sulfur hexafluoride gas in the box; wherein The circulation pipeline includes a plurality of heat dissipation pipelines symmetrically arranged up and down, and a radiator is arranged in the middle of the heat dissipation pipeline to reduce the temperature of sulfur hexafluoride gas; A plurality of fans are arranged below the radiator to blow out air to cool the radiator and the heat dissipation pipe; The radiator comprises a plurality of groups of radiating fins, and temperature sensors are arranged on the outer walls of the plurality of groups of radiating fins to detect the temperatures of the radiators in different areas; and The control module is electrically connected to the temperature sensor and the fan, and the control module is configured to compare the difference between the temperatures detected by different temperature sensors.

[0015] In an optional embodiment, the temperature sensor includes a display screen and a detection unit; The detection portion extends inwardly along the side of the corresponding group to detect the temperature of the heat sink at the center of the group; The display screen displays the temperature detected by the detection unit; and When the temperature difference displayed on the different display screens is greater than 5° C., the control module increases the output power of the fan under the group of heat sinks with a higher temperature to reduce the temperature of the group of heat sinks.

[0016] In a third aspect, the embodiment of the present disclosure also provides a working method of the gas insulated transformer as described above, including: when the difference between the temperatures detected by the different temperature sensors is greater than 5°C, the control module increases the output power of the fan under the radiator in the higher temperature area to reduce the temperature of the radiator in the area. The beneficial effect of the present invention is that the gas-insulated transformer and its working method detect the temperature difference of different heat dissipation areas by arranging a plurality of temperature sensors in different areas of the radiator, thereby increasing the fan output power in the area with higher temperature to reduce the temperature of the area, so that the temperature of sulfur hexafluoride gas in different pipelines after heat dissipation is close, thereby improving the cooling efficiency of the transformer in the box.

[0017] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A three-dimensional diagram of a gas-insulated transformer provided in an embodiment of the present disclosure; Figure 2 A partial enlarged view of a gas-insulated transformer provided in an embodiment of the present disclosure; Figure 3 A schematic diagram of electrical connections of a control module provided in an embodiment of the present disclosure.

[0021] In the figure: 1. Transformer box; 2. Circulation pipeline; 21. Heat dissipation pipeline; 22. Air pump; 3. Radiator; 31. Temperature sensor; 311. Display screen; 312. Detection unit; 32. Heat sink; 33. Gap; 4. Fan. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0026] Research has found that a gas-insulated transformer is a transformer that mainly uses sulfur hexafluoride (SF6) gas as an insulating and cooling medium. It has excellent fire and explosion-proof properties. When a gas-insulated transformer is used, a radiator needs to be arranged on one side to cool the SF6 gas in the pipeline. The low-temperature SF6 gas is then passed into the transformer box to reduce the temperature of the transformer.

[0027] The existing radiator used in the gas-insulated transformer is composed of several groups of radiating fins. A fan is arranged under the radiating fins to blow air to reduce the temperature of the radiating fins. However, the area around the radiating fins in the middle group is crowded, and its heat dissipation effect is not as good as that of the radiating fins in the edge group. The radiator cannot detect these temperatures and cannot be adjusted. This leads to a large temperature difference of sulfur hexafluoride gas in different pipelines after heat dissipation, thereby reducing the cooling efficiency of the transformer in the box.

[0028] Therefore, how to detect and adjust the temperatures of the middle group of heat sinks and the edge group of heat sinks is a technical problem that needs to be solved urgently in this field.

[0029] Embodiment 1: Reference Figure 1 and Figure 2 The present embodiment provides a gas insulated transformer, comprising: a transformer box 1, which is filled with sulfur hexafluoride gas, the transformer box 1 is connected to a circulation pipe 2, and the circulation pipe 2 is connected to an air pump 22 to enable the sulfur hexafluoride gas in the transformer box 1 to flow and circulate along the circulation pipe 2.

[0030] Furthermore, a radiator 3 is provided on the path of the circulation pipe 2 to reduce the temperature of the sulfur hexafluoride gas during the circulation process, and then the transformer body inside the transformer box 1 is cooled by the cooled sulfur hexafluoride gas. A plurality of fans 4 are provided below the radiator 3. The fans 4 blow out airflow to cool the radiator 3 and part of the circulation pipe 2. A plurality of temperature sensors 31 are provided on the radiator 3 to detect the temperature of the radiator 3 in different areas. The temperature sensor 31 is electrically connected to a control module, and the control module is also electrically connected to the fan 4. The control module is configured to compare the difference in temperature detected by different temperature sensors 31.

[0031] More specifically, the temperature sensors 31 are arranged in the middle and at the edge of the radiator 3 to detect the temperatures of the two areas on the radiator 3 where the heat dissipation effects differ the most. When the difference in temperature detected by different temperature sensors 31 is greater than 5°C, the control module increases the output power of the fan 4 below the radiator 3 in the area with higher temperature to increase the airflow blowing to the area, thereby reducing the temperature of the radiator 3 in the area, so that the overall heat dissipation effect of the radiator 3 is more uniform, and the temperature of the sulfur hexafluoride gas after heat dissipation is also more uniform, thereby improving the cooling efficiency of the F6 gas after heat dissipation entering the transformer box 1.

[0032] Reference Figure 2The structure of the temperature sensor 31 is described in detail below. In some embodiments, the radiator 3 includes several groups of heat sinks 32. The outer walls of the two middle groups of heat sinks 32 are provided with temperature sensors 31. The outer walls of the two edge groups of heat sinks 32 are also provided with temperature sensors 31. The temperature sensor 31 includes a display screen 311 and a detection unit 312. The detection unit 312 extends inward along the side of the corresponding group to detect the temperature of the heat sink 32 at the center of the group. The display screen 311 displays the temperature detected by the detection unit 312, so that the staff can observe the detected temperature. Through the above-mentioned settings, the effect of detecting the temperature of the heat sink 32 at the center of the group with a large difference in heat dissipation effect is achieved, and it is convenient for manual observation.

[0033] Reference Figure 2 , the arrangement of the radiator 3 is described in detail below. In some embodiments, the heat sink 32 is parallel to the side wall of the transformer box 1, the circulation pipeline 2 includes a plurality of heat sink pipes 21 symmetrically arranged up and down, the heat sink 32 is arranged in the middle of the heat sink pipe 21, and the fan 4 blows out airflow to cool the heat sink 32 and the heat sink pipe 21 to fully dissipate heat. It is worth mentioning that each group of heat sinks 32 includes a plurality of heat sinks 32 evenly spaced, which further improves the heat dissipation effect.

[0034] Reference Figure 1 and Figure 2 , the arrangement of the fan 4 is described in detail below. In some embodiments, a fan 4 is arranged below every two groups of heat sinks 32, that is, the airflow blown by any fan 4 cools down the two groups of heat sinks 32. In this way, not only the heat dissipation effect of the fan 4 is fully utilized, but also the problem of increasing production and use costs due to setting too many fans 4 is avoided. It is worth mentioning that the airflow blown by the fan 4 flows through the gaps 33 between the heat sinks 32 arranged evenly spaced, which can fully cool down each group of heat sinks 32.

[0035] Embodiment 2: Based on the gas insulated transformer of Example 1, this embodiment provides a working method of the above-mentioned gas insulated transformer, including: when the difference between the temperatures detected by different temperature sensors 31 is greater than 5°C, the control module increases the output power of the fan 4 below the radiator 3 in the higher temperature area to reduce the temperature of the radiator 3 in this area, so that the overall heat dissipation effect of the radiator 3 is more uniform, and the temperature of the sulfur hexafluoride gas after heat dissipation is also more uniform, thereby improving the cooling efficiency of the F6 gas after heat dissipation entering the transformer box 1.

[0036] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is 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 a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0038] Spatially relative terms, such as "inside", "outside", "below", "below", "down", "above", "on", etc., may be used herein to facilitate description of the relationship of one element or feature to another element or feature as illustrated in the figure. In addition to the orientation depicted in the figure, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is turned over, the elements described as "below" or "below" other elements or features will be oriented to be "above" other elements or features. Therefore, the example term "below" can cover the orientation above and below. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0039] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A gas insulated transformer, characterized in that: include: The transformer box (1) is filled with sulfur hexafluoride gas and is connected to a circulation pipe (2) for circulating the gas in the box; A radiator (3) is arranged on the path of the circulation pipeline (2), and a plurality of heat dissipation fans (4) are arranged below the radiator (3); wherein A plurality of temperature sensors (31) are arranged on the radiator (3) to detect the temperatures of different areas of the radiator (3); as well as A control module is electrically connected to the temperature sensor (31) and the fan (4), and is configured to compare the difference between the temperatures detected by different temperature sensors (31). When the difference is greater than 5°C, the control module increases the output power of the fan (4) below the radiator (3) in a higher temperature area to reduce the temperature of the radiator (3) in that area.

2. The gas insulated transformer according to claim 1, characterized in that: The heat sink (3) comprises a plurality of groups of heat sink fins (32); Temperature sensors (31) are provided on the outer walls of the two middle groups of heat sinks (32); Temperature sensors (31) are also provided on the outer walls of the two groups of heat sinks (32) at the edge; The temperature sensor (31) detects the temperature of the heat sink (32) at the center of its corresponding group.

3. The gas insulated transformer according to claim 2, characterized in that: The temperature sensor (31) comprises a display screen (311) and a detection unit (312); The detection portion (312) extends inwardly along the side of the corresponding group to detect the temperature of the heat sink (32) at the center of the group; The display screen (311) displays the temperature detected by the detection unit (312).

4. The gas insulated transformer according to claim 2, characterized in that: A fan (4) is disposed below each two groups of heat sinks (32); Any of the fans (4) blows out airflow to cool the two groups of heat sinks (32).

5. The gas insulated transformer according to claim 2, characterized in that: The heat sink (32) is parallel to the side wall of the transformer box (1); The circulation pipeline (2) comprises a plurality of heat dissipation pipelines (21) which are symmetrically arranged in an upper and lower direction; The heat sink (32) is arranged in the middle of the heat dissipation pipe (21) to fully dissipate heat.

6. The gas insulated transformer according to claim 2, characterized in that: Each group of heat sinks (32) comprises a plurality of heat sinks (32) arranged at even intervals; The airflow blown out by the fan (4) flows through the gaps (33) between the heat sinks (32) to cool the heat sinks (32).

7. The gas insulated transformer according to claim 1, characterized in that: The circulation pipeline (2) is connected to an air pump (22) to achieve the circulation of sulfur hexafluoride gas.

8. A gas insulated transformer, characterized in that: include: A transformer box (1) filled with sulfur hexafluoride gas; A circulation pipeline (2) is communicated with the transformer box (1), and the circulation pipeline (2) is connected to an air pump (22) to circulate the sulfur hexafluoride gas in the box; wherein The circulation pipeline (2) comprises a plurality of heat dissipation pipelines (21) symmetrically arranged in an upper and lower direction, and a radiator (3) is arranged in the middle of the heat dissipation pipeline (21) to reduce the temperature of the sulfur hexafluoride gas; A plurality of fans (4) are arranged below the radiator (3) to blow out airflow to cool the radiator (3) and the heat dissipation pipe (21); The radiator (3) comprises a plurality of groups of radiating fins (32), and temperature sensors (31) are arranged on the outer walls of the plurality of groups of radiating fins (32) to detect the temperatures of different areas of the radiator (3); as well as A control module is electrically connected to the temperature sensor (31) and the fan (4), and the control module is configured to compare the difference between the temperatures detected by different temperature sensors (31).

9. The gas insulated transformer according to claim 8, characterized in that The temperature sensor (31) comprises a display screen (311) and a detection unit (312); The detection portion (312) extends inwardly along the side of the corresponding group to detect the temperature of the heat sink (32) at the center of the group; The display screen (311) displays the temperature detected by the detection unit (312); as well as When the temperature difference displayed on the different display screens (311) is greater than 5°C, the control module increases the output power of the fan (4) below the group of heat sinks (32) with a higher temperature, so as to reduce the temperature of the group of heat sinks (32).

10. A method for operating a gas insulated transformer according to any one of claims 1 to 9, characterized in that: include: When the difference between the temperatures detected by the different temperature sensors (31) is greater than 5°C, the control module increases the output power of the fan (4) below the radiator (3) in the area with higher temperature, so as to reduce the temperature of the radiator (3) in this area.

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