CN113241219A - High-voltage air supply device and high-voltage power transmission equipment - Google Patents
High-voltage air supply device and high-voltage power transmission equipment Download PDFInfo
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- CN113241219A CN113241219A CN202110496376.6A CN202110496376A CN113241219A CN 113241219 A CN113241219 A CN 113241219A CN 202110496376 A CN202110496376 A CN 202110496376A CN 113241219 A CN113241219 A CN 113241219A
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- air
- fan
- voltage
- air supply
- power transmission
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
- H01B7/423—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation using a cooling fluid
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a high-voltage air supply device and high-voltage power transmission equipment, relates to the technical field of high-voltage power transmission, and can utilize outside air to cool a sleeve. The high-voltage air supply device of the invention is arranged in high-voltage power transmission equipment and comprises: the air inlet is communicated with the ventilation pipeline, and the air outlet is communicated with an air channel in a sleeve in the high-pressure equipment. The high-voltage air supply device and the high-voltage power transmission equipment are used for high-voltage power transmission.
Description
Technical Field
The invention relates to the technical field of high-voltage power transmission, in particular to a high-voltage air supply device and high-voltage power transmission equipment.
Background
In high-voltage transmission, high-voltage equipment needs to bear the superposition of high voltage, large current and strong mechanical load in the long-term operation process, and high electric, thermal and mechanical stress exists inside the high-voltage equipment. Among them, the bushing is an important component commonly used in high voltage equipment, and the conductive rod inside the bushing needs to withstand high voltage and large current, which may generate a large amount of heat inside the bushing. Due to the high heat present inside, this causes the temperature of the bushing to rise, which leads to insulation failure of the bushing.
In order to solve the problem of overhigh temperature inside the sleeve, a heat management mode can be adopted. For example, the conductive rod is provided with a radiator, and the internal heat is continuously brought to the outside for emission by using a cold medium circulating in the radiator, so that the temperature inside the sleeve is reduced, and the temperature of the sleeve can be ensured in a normal range.
However, when the refrigerant medium is selected for water cooling, the refrigerant medium needs to flow, so that the risk of refrigerant medium leakage may occur in the flow process, and the potential safety hazard is high.
Disclosure of Invention
The invention provides a high-voltage air supply device and high-voltage power transmission equipment, which can cool a sleeve by using air and reduce potential safety hazards.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a high voltage air supply device, which is disposed in a high voltage power transmission device, and includes a fan assembly and a ventilation pipeline, where the ventilation pipeline has an air inlet and an air outlet, the fan assembly is communicated with the ventilation pipeline through the air inlet, and the air outlet is used for being communicated with an air duct in a casing in the high voltage device.
The high-pressure air supply device provided by the embodiment of the invention comprises a fan assembly and a ventilation pipeline, wherein the ventilation pipeline is provided with an air inlet and an air outlet, the air outlet is communicated with an air channel in a sleeve in high-pressure equipment, and the air inlet is communicated with the fan assembly. The fan assembly can drive the air to flow and provide cold air. From this, cold wind gets into the ventilation pipeline through the air intake under the effect of fan subassembly, then blows in the wind channel in the sleeve pipe with the air outlet intercommunication, realizes sheathed tube cooling. According to the invention, the cold air is formed by the outside air, and is blown into the sleeve by the ventilation pipeline to cool the sleeve, so that the potential safety hazard caused by cooling by using a refrigerant medium is avoided compared with the prior art.
In another aspect, an embodiment of the present invention provides a high voltage power transmission apparatus, including a casing, where an air flow ventilation duct is provided in the casing, and further including a high voltage air supply device in the embodiment of the above aspect, where the air outlet of the high voltage air supply device is communicated with the air flow ventilation duct.
The high-voltage power transmission equipment provided by the embodiment of the invention comprises the high-voltage air supply device in the first aspect, and air in an external environment can be sent into the air flow ventilation channel in the sleeve by using the fan assembly, so that the sleeve is cooled, and potential safety hazards caused by cooling by using a refrigerant are avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a high-voltage power transmission apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another high-voltage power transmission apparatus according to an embodiment of the present invention;
FIG. 3 is an enlarged fragmentary view of a portion of the fan assembly of FIG. 2;
fig. 4 is a schematic diagram of a high-voltage power transmission apparatus according to an embodiment of the present application.
Reference numerals:
1-a fan assembly; 11-a wind collecting cover; 111-opening; 12-a fan; 121-a fan housing; 122-fan blades; 2-a ventilation pipeline; 3-a check valve; 4-a sleeve; 5-bus bar; 51-a through hole; 61-first pressure equalizing balls; 62-a second pressure equalizing ball; 7-hardware fitting; 8-a fixed part; 9-a controller; 10-ambient environment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, "and/or" is only one kind of association relationship describing an association object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
High-voltage power transmission equipment has high electrical, thermal and mechanical stress inside because of the superposition effect of high voltage, large current and strong mechanical load borne in the long-term operation process. The bushing is used as a common important part in high-voltage equipment, and a conducting rod in the bushing needs to bear high voltage and large current, so that the temperature of the bushing is increased, and the problem of insulation failure occurs.
In order to improve the temperature inside the bushing, it is common to use a cold medium for thermal management as mentioned in the background. However, when the refrigerant medium is used for heat management, the risk of refrigerant leakage may occur, which brings potential safety hazards.
In order to solve the technical problem, an embodiment of the invention provides high-voltage power transmission equipment, which uses air to cool a sleeve in a heat dissipation manner, sends external air in an external environment into the sleeve to dissipate heat of the sleeve, and avoids potential safety hazards.
The high-voltage power transmission equipment provided by the embodiment of the invention comprises a sleeve, wherein an air flow ventilation channel is arranged in the sleeve, and the high-voltage air supply device provided by the other embodiment of the invention is also included, and an air outlet of a ventilation pipeline in the high-voltage air supply device is communicated with the air flow ventilation channel in the sleeve.
The high-voltage power transmission equipment provided by the embodiment of the invention comprises the high-voltage air supply device, so that air in an external environment can be sent into the air flow ventilation channel in the sleeve by using the high-voltage air supply device, the sleeve is cooled, and potential safety hazards caused by cooling by using a refrigerant medium are avoided.
Next, the high-pressure air blower according to the present invention will be further described.
The high-voltage air supply device provided by the embodiment of the invention is arranged in high-voltage power transmission equipment, and comprises a fan assembly 1 and a ventilation pipeline 2 as shown in fig. 2, wherein the ventilation pipeline 2 is provided with an air inlet and an air outlet (the air inlet and the air outlet are not shown in the figure), the fan assembly 1 is communicated with the ventilation pipeline 2 through the air inlet, and the air outlet is used for being communicated with an air duct in a sleeve 4 in the high-voltage equipment.
Fig. 2 is a schematic view of a high-voltage air supply device arranged in a high-voltage power transmission equipment. It can be seen that the high-pressure air supply device comprises a fan assembly 1 and a ventilation pipeline 2, wherein the ventilation pipeline 2 is provided with an air inlet and an air outlet, the air outlet is communicated with an air channel in a sleeve 4 in the high-pressure equipment, the air inlet is communicated with the fan assembly 1, and the fan assembly 1 can drive air to flow to provide cold air. From this, cold wind gets into ventilation pipeline 2 through the air intake under the effect of fan subassembly 1, then blows in the wind channel in the sleeve pipe 4 with the air outlet intercommunication, realizes the cooling of sleeve pipe 4. The invention forms cold air through the outside air, and the cold air is blown into the sleeve 4 by the ventilation pipeline 2 to cool the sleeve 4. Compared with the prior art, the potential safety hazard caused by cooling by using a refrigerant is avoided.
Further, as shown in fig. 2, the fan assembly 1 includes a wind collecting cover 11 and a fan 12 disposed in the wind collecting cover, the wind collecting cover 11 has an opening 111 for collecting outside air, and an air outlet and an air inlet of the fan 12 are communicated.
Because the wind-collecting cover 11 has the opening 111 for collecting the outside air, the outside air can enter the wind-collecting cover 11 through the opening 111 of the wind-collecting cover 11, and the fan 12 in the wind-collecting cover 11 can send the air into the air inlet of the ventilation pipeline 2 through the air supply outlet, thereby realizing the effect of cooling the sleeve 4 by using the air.
Certainly, the fan assembly 1 may not be provided with the air collecting cover 11, and the fan 12 directly blows in the outside air into the air inlet, so as to achieve the effect of cooling the casing 4 by using the air.
In some embodiments, as shown in fig. 2 and 3, a non-return valve 3 is disposed at the air inlet of the ventilation duct 2, and the non-return valve 3 can allow the air of the fan 12 to blow into the ventilation duct 2, and can prevent the air in the ventilation duct 2 from entering into the fan 12.
Because the wind in the ventilation pipeline 2 may flow back from the fan 12, in order to prevent the backflow phenomenon, the check valve 3 is arranged at the air inlet, so that the air inlet only allows the wind to enter the ventilation pipeline 2, and the wind in the ventilation pipeline 2 cannot enter the fan 12.
Specifically, as shown in fig. 3, the fan 12 includes a fan housing 121 and a fan blade 122, and the fan housing 121 is fixed to the wind collection cover 11.
It can be seen that the fan 12 includes a fan housing 121 and an internal fan blade 122, the fan housing 121 and the wind-collecting cover 11 are fixed by a fixing portion 8, the fixing portion 8 may be a snap-fit structure, or the wind-collecting cover 11 and the fan housing 121 may be directly welded together by the fixing portion 8. The fixing portion 8 is not particularly limited, and any fixing portion 8 may be used as long as the fixing of the fan case 121 and the wind collecting cover 11 is achieved.
In some embodiments, as shown in fig. 2 and 3, the number of the fan assemblies 1 is multiple, in order to ensure the normal operation of the fan assemblies 1, multiple fan assemblies 1 may be provided, and when one fan assembly 1 fails, the remaining fan assemblies 1 may start to operate.
There are various ways in which the plurality of fan assemblies 1 may operate. Take two as an example. Under normal conditions, one fan assembly 1 works, the other fan assembly 1 stops, and when the fan assembly 1 in the working state breaks down and stops working, the other fan assembly 1 starts working. Or two fan assemblies 1 work simultaneously, so that even if one fan assembly 1 fails, the other fan assembly 1 is kept in a normal operation state.
In some embodiments, a power supply is also included for powering the fan 12. Specifically, for example, a power supply at a short distance may be used to supply power to the fan 12, or a storage battery may be disposed in the fan 12 to supply power, or an induction power-taking device may be disposed in the bus to take power.
As described above, embodiments of the present invention further provide a high-voltage power transmission apparatus, and the high-voltage power transmission apparatus provided by the embodiments of the present invention is described below.
As described above, the high-voltage power transmission equipment according to the embodiment of the present invention includes the casing 4, and the casing 4 has the air flow duct therein, and further includes the high-voltage air blowing device according to the above embodiment, and the air outlet of the high-voltage air blowing device is communicated with the air flow duct. Therefore, the sleeve 4 can be cooled by air, and potential safety hazards are reduced compared with a method for cooling by using a refrigerant medium in the prior art.
Further, the fan assembly further comprises a bus bar 5, a first end of the bus bar 5 is connected with the sleeve 4 through a first pressure-equalizing ball 61, a second end of the bus bar 5 is connected with a converter valve (not shown in the figure) through a second pressure-equalizing ball 62, and the fan assembly 1 can be arranged in the first pressure-equalizing ball 61 or the second pressure-equalizing ball 62.
As shown in fig. 1 and 2, a fitting 7 is disposed at one end of the sleeve 4, the sleeve 4 and the first end of the busbar 5 are connected in a first equalizing ball 61 by the fitting 7, and similarly, the second end of the busbar 5 and the converter valve are connected in a second equalizing ball 62, because the connection of the second end of the busbar 5 is complicated, the second equalizing ball 62 is generally large in size.
Wherein, can set up fan subassembly 1 in first pressure-equalizing ball 61 or second pressure-equalizing ball 62, when fan subassembly 1 sets up in first pressure-equalizing ball 61, fan subassembly 1 is nearer with the distance of sleeve pipe 4, can set up shorter ventilation pipeline 2 and connect. And can also be arranged in the second pressure equalizing ball 62, as mentioned above, because the size of the second pressure equalizing ball 62 is generally larger, the arrangement of the fan assembly 1 can be conveniently carried out.
Preferably, as shown in fig. 2, the fan assembly 1 is disposed in the second pressure equalizing ball 62, and the ventilation pipe 2 is disposed in the bus bar 5, as shown in fig. 3, a through hole 51 is disposed at a position of the bus bar 5 in the second pressure equalizing ball 62, and the ventilation pipe 2 passes through the through hole 51 to communicate with the fan assembly 1.
When the fan assembly 1 is disposed in the second pressure equalizing ball 62, the ventilation pipe 2 may be disposed inside the bus bar 5, which may prevent the electromagnetic field from being affected to the outside. In order to communicate the ventilation pipe 2 with the fan assembly 1 in the second pressure equalizing ball 62, as shown in fig. 3, a through hole 51 is provided at a position where the bus bar 5 is located in the second pressure equalizing ball 62, and the ventilation pipe 2 can communicate with the fan assembly 1 through the through hole 51.
When there are a plurality of fan assemblies 1, the through holes 51 may be provided at different positions of the bus bar 5, and the through holes 51 in the bus bar 5 may be shifted as much as possible, so that the influence of the through holes 51 on the current carried by the bus bar 5 can be reduced.
In addition, as shown in fig. 3, the opening 111 of the wind collection cover 11 in the fan assembly 1 faces the gravity direction of the second pressure equalizing ball 61.
Because the fan assembly 1 is located in the second voltage-sharing ball 61, the second end of the bus bar 5 is connected with the converter valve through the second voltage-sharing ball 62, the connection point will generate a certain amount of heat due to the existence of the contact resistor, which causes the temperature of the air above the second voltage-sharing ball 62 to be higher than the temperature of the environment, and in order to prevent the air above from entering the fan 12, the direction of the opening 111 of the wind-collecting cover 11 is selected to face the gravity direction of the second voltage-sharing ball 62, that is, the direction of the opening 111 faces downward. Therefore, the air at the upper part of the second pressure equalizing ball 62 is not easy to enter the air collecting hood 11 through the opening 111, so that the temperature of the air in the air collecting hood 11 is close to the temperature of the external environment, and the cooling effect on the sleeve 4 is further improved.
In some embodiments, as shown in FIG. 4, a controller 9 is included that is capable of controlling the speed of fan 12 such that fan 12 operates at different speeds. The specific process is that the controller 9 controls the speed of the fan, the fan 12 runs at a certain speed, the air of the external environment 10 enters the ventilation pipeline 2 under the action of the fan 12, and then enters the air flow ventilation channel in the sleeve 4 through the air outlet of the ventilation pipeline 2 to cool the sleeve 4.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A high-voltage air supply device is arranged in high-voltage power transmission equipment and is characterized by comprising a fan assembly and a ventilation pipeline,
the ventilation pipeline is provided with an air inlet and an air outlet, the fan assembly is communicated with the ventilation pipeline through the air inlet, and the air outlet is communicated with an air channel in a sleeve in the high-pressure equipment.
2. The high-pressure air supply device according to claim 1, wherein the fan assembly includes a wind collection cover and a fan disposed in the wind collection cover, the wind collection cover has an opening for collecting outside air, and an air supply outlet of the fan communicates with the air inlet.
3. The high-pressure air supply device according to claim 2, wherein a check valve is arranged at the air inlet of the ventilation duct, and the check valve is used for allowing the fan to blow into the ventilation duct and preventing air in the ventilation duct from entering the fan.
4. The high pressure air supply apparatus as claimed in claim 2 or 3, wherein the fan comprises a fan housing and a fan blade, the fan housing being secured to the air collection hood.
5. The high pressure air supply arrangement of claim 1, wherein the number of fan assemblies is plural.
6. The high pressure air supply arrangement of claim 1, further comprising a power supply arrangement for supplying power to the blower.
7. A high-voltage power transmission equipment, comprising a sleeve, wherein an air flow ventilation channel is arranged in the sleeve, the high-voltage power transmission equipment further comprises a high-voltage air supply device according to any one of claims 1 to 6, and the air outlet of the high-voltage air supply device is communicated with the air flow ventilation channel.
8. The high voltage power transmission apparatus according to claim 7, further comprising a bus bar, a first end of the bus bar being connected to the bushing by a first voltage-sharing ball and a second end of the bus bar being connected to the converter valve by a second voltage-sharing ball, the fan assembly being disposed within the first voltage-sharing ball or within the second voltage-sharing ball.
9. The high voltage transmission equipment according to claim 8, wherein said fan assembly is disposed in said second pressure-equalizing ball, said ventilation pipe is disposed in said bus bar, a through hole is formed in a position of said bus bar in said second pressure-equalizing ball, and said ventilation pipe passes through said through hole and communicates with said fan assembly.
10. The high voltage power transmission apparatus according to claim 9, wherein the fan assembly comprises a wind-collecting hood and a fan disposed in the wind-collecting hood, the wind-collecting hood having an opening for collecting outside air, the opening facing a direction of gravity of the second pressure-equalizing ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110496376.6A CN113241219A (en) | 2021-05-07 | 2021-05-07 | High-voltage air supply device and high-voltage power transmission equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110496376.6A CN113241219A (en) | 2021-05-07 | 2021-05-07 | High-voltage air supply device and high-voltage power transmission equipment |
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| Publication Number | Publication Date |
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| CN113241219A true CN113241219A (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110496376.6A Pending CN113241219A (en) | 2021-05-07 | 2021-05-07 | High-voltage air supply device and high-voltage power transmission equipment |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340067A (en) * | 2007-07-04 | 2009-01-07 | Abb技术有限公司 | Cooling of high voltage devices |
| US20100243288A1 (en) * | 2007-12-21 | 2010-09-30 | Thomas Eriksson | High Voltage Bushing, A Method Of Cooling A Conductor Thereof, And An Electric Power Distribution System Comprising Such A Bushing |
| US20130192025A1 (en) * | 2012-01-30 | 2013-08-01 | Kabushiki Kaisha Toshiba | High pressure bushing of rotating electrical machine and rotating electrical machine |
| CN106793701A (en) * | 2016-12-30 | 2017-05-31 | 深圳市海吉源科技有限公司 | A kind of data center module heat abstractor |
| WO2021144409A1 (en) * | 2020-01-15 | 2021-07-22 | Abb Power Grids Switzerland Ag | Air-cooled air-to-air bushing |
| CN216054017U (en) * | 2021-05-07 | 2022-03-15 | 国家电网有限公司 | High-voltage air supply device and high-voltage power transmission equipment |
-
2021
- 2021-05-07 CN CN202110496376.6A patent/CN113241219A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340067A (en) * | 2007-07-04 | 2009-01-07 | Abb技术有限公司 | Cooling of high voltage devices |
| US20100243288A1 (en) * | 2007-12-21 | 2010-09-30 | Thomas Eriksson | High Voltage Bushing, A Method Of Cooling A Conductor Thereof, And An Electric Power Distribution System Comprising Such A Bushing |
| US20130192025A1 (en) * | 2012-01-30 | 2013-08-01 | Kabushiki Kaisha Toshiba | High pressure bushing of rotating electrical machine and rotating electrical machine |
| CN106793701A (en) * | 2016-12-30 | 2017-05-31 | 深圳市海吉源科技有限公司 | A kind of data center module heat abstractor |
| WO2021144409A1 (en) * | 2020-01-15 | 2021-07-22 | Abb Power Grids Switzerland Ag | Air-cooled air-to-air bushing |
| CN216054017U (en) * | 2021-05-07 | 2022-03-15 | 国家电网有限公司 | High-voltage air supply device and high-voltage power transmission equipment |
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Address after: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Applicant after: STATE GRID CORPORATION OF CHINA Applicant after: State Grid Smart Grid Research Institute Co.,Ltd. Address before: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Applicant before: STATE GRID CORPORATION OF CHINA Applicant before: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE Co.,Ltd. |