CN115333028A - Aerodynamic anti-icing spacer device - Google Patents

Aerodynamic anti-icing spacer device Download PDF

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Publication number
CN115333028A
CN115333028A CN202211038824.9A CN202211038824A CN115333028A CN 115333028 A CN115333028 A CN 115333028A CN 202211038824 A CN202211038824 A CN 202211038824A CN 115333028 A CN115333028 A CN 115333028A
Authority
CN
China
Prior art keywords
spacer
fan blade
icing
storage battery
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211038824.9A
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Chinese (zh)
Inventor
李嘉祥
高翔
杨百存
李明
樊赟赟
陈猛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Northeastern University China
Original Assignee
Northeastern University China
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Northeastern University China filed Critical Northeastern University China
Priority to CN202211038824.9A priority Critical patent/CN115333028A/en
Publication of CN115333028A publication Critical patent/CN115333028A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables
    • H02G7/12—Devices for maintaining distance between parallel conductors, e.g. spacer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10—Combinations of wind motors with apparatus storing energy
    • F03D9/11—Combinations of wind motors with apparatus storing energy storing electrical energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables
    • H02G7/05—Suspension arrangements or devices for electric cables or lines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables
    • H02G7/16—Devices for removing snow or ice from lines or cables
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

The invention relates to a aerodynamic anti-icing spacer device which comprises a spacer, wherein the middle part of the spacer is provided with a rotating fan blade which is connected through a fan blade fixing steel pipe and driven by a motor, the rotating fan blade is fixed on the fan blade fixing steel pipe, and the fan blade fixing steel pipe is rotationally connected to a frame of the spacer; a packaging box is fixed on the frame of the spacer, a wind direction sensor is arranged on the packaging box, and an inductor and a storage battery electrically connected with the inductor are arranged in the packaging box; a solar cell panel or a vertical axis wind driven generator is fixed on the frame of the spacer, the generated electric energy is stored in a storage battery, and the storage battery supplies power for the load of the motor and the storage battery or directly supplies power for the load of the motor and the storage battery; the aerodynamic anti-icing spacer device further comprises a controller, and the motor, the sensor and the wind direction sensor are electrically connected with the controller. The invention changes the flow field around the lead by utilizing the airflow generated by the rotating fan blades, reduces the collision coefficient of water drops on the lead, and thus reduces the ice coating on the lead.

Description

Aerodynamic anti-icing spacer device
Technical Field
The invention belongs to the technical field of high-voltage power transmission, and particularly relates to a aerodynamic anti-icing spacer device.
Background
With the development of society, the production and life of human beings cannot be reliable power supply, and the demand of countries in the world for electric energy is continuously increased. The high-voltage power transmission has the characteristics of long power transmission distance and high efficiency. High-voltage transmission generally adopts multi-split conductor high-voltage transmission, for example, 750KV uses six-split conductors. Because the cold air with water drops under the conditions of rain, snow, low temperature and the like can impact the surface of the wire under the wind, the impacted water drops are frozen on the surface of the wire, the volume of the wire is gradually increased, and the weight of the wire is heavier. The problem of ice coating is exacerbated by the larger surface area of the split conductor. Icing of the wires can cause a variety of grid accidents.
At present, the measures taken for the split conductor under the above conditions are anti-icing, and the anti-icing method comprises a thermal deicing method: the lead is heated, but the method consumes large electric quantity, and the lead needs to be short-circuited during heating, so that the power transmission line stops transmitting power, and the economy is not high; the method for hydrophobic coating of the wire comprises the following steps: the coating is coated on the surface of the lead, so that the surface of the lead is smooth, rain and snow cannot adhere to the surface of the lead, but the method needs to maintain the coating regularly, and the coating is a chemical component and has the possibility of polluting the environment; a manual deicing method: the deicing is carried out by beating with a tool by manpower, but the method needs a large amount of manpower and material resources and can only realize the deicing on a small scale. Therefore, there is a need to develop a more efficient and environmentally friendly anti-icing device.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the aerodynamic anti-icing spacer device, which is characterized in that fan blades, an inductor, a storage battery and a solar cell panel are arranged on the existing six-bundle conductor spacer by utilizing the aerodynamic principle, and an air field around a conductor can be changed by a strong airflow 'air wall' generated by mechanical rotation, so that the direction of the airflow with supercooled water drops perpendicular to the direction of the conductor is changed, the possibility of collision of the supercooled water drops on the conductor is reduced, the ice coating on the conductor can be effectively reduced, and the possibility of the power grid ice coating disaster is reduced.
A aerodynamic anti-icing spacer device comprises a spacer, wherein a rotating fan blade which is connected through a fan blade fixing steel pipe and driven by a motor is arranged in the middle of the spacer, the rotating fan blade is fixed on the fan blade fixing steel pipe, and the fan blade fixing steel pipe is rotatably connected to a frame of the spacer; a packaging box is fixed on the frame of the spacer, a wind direction sensor is arranged on the packaging box, and an inductor and a storage battery electrically connected with the inductor are arranged in the packaging box; a solar cell panel or a vertical axis wind driven generator is fixed on the frame of the spacer, the generated electric energy is stored in a storage battery, and the storage battery supplies power for the load of the motor and the storage battery or directly supplies power for the load of the motor and the storage battery;
the aerodynamic anti-icing spacer device further comprises a controller, and the motor, the sensor and the wind direction sensor are electrically connected with the controller.
Rotating fan blades are uniformly distributed along the central axis of the spacer, and the rotating fan blades rotate around the central axis of the spacer under the driving of the motor.
Three rotating fan blades are uniformly distributed in the middle of the spacing rod.
The sensor includes a temperature sensor and a humidity sensor.
A steering motor is arranged in the packaging box and electrically connected with the controller, and the fan blade fixing steel pipe is in transmission connection with the steering motor through a gear; the output end of the steering motor is connected with a driving gear, the driving gear is meshed with a driven gear, a motor base of the steering motor and a gear shaft of the driven gear are fixed on a connecting base on the fan blade fixing steel pipe, the steering motor rotates, the driven gear and the fan blade fixing steel pipe are driven to rotate through gear meshing, and therefore the fan blade fixing steel pipe rotates, namely the fan blade rotates.
The controller is arranged in the packaging box.
The vertical axis wind driven generator is a vertical axis wind driven generator applicable to all wind directions.
The invention has the beneficial effects that: the invention utilizes the airflow generated by the rotating fan blades to change the flow field around the lead, and reduces the collision coefficient of water drops on the lead, thereby reducing the ice coating on the lead.
1. The structure is simple: the fan blades, the inductor, the storage battery and the solar panel are arranged on the existing spacer, wherein the fan blades are arranged in the middle of the spacer, so that the structure is reasonable, and the space is fully utilized; the inductor and the storage battery do not need a high-power motor; meanwhile, the solar cell panel can be replaced by a vertical axis wind driven generator, and the vertical axis wind driven generator can normally operate by supplying electric energy under the condition that the sunshine condition does not reach the standard.
2. The principle is novel: the method is different from other wire anti-icing methods, changes the flow field direction around the wire, reduces the collision coefficient of supercooled water drops on the wire, can blow off the falling snow on the wire, and reduces the wire icing under the condition that rain and snow are not frozen.
3. The invention is clean and environment-friendly, does not use any chemical agent, has low power consumption and saves energy.
Drawings
Fig. 1 is a first schematic structural diagram of a powered anti-icing spacer apparatus according to embodiment 1 of the present invention;
fig. 2 is a second schematic structural view of the powered anti-icing spacer device according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of the working principle of the power anti-icing spacer device provided by the embodiment of the invention;
FIG. 4 is a schematic diagram of a collision coefficient physical model of a dynamic anti-icing spacer device provided by the invention;
fig. 5 is a velocity vector diagram of an XZ plane flow field of a finite element simulation of the dynamic anti-icing spacer apparatus according to the embodiment of the present invention (in this state, an included angle between a rotating fan blade and a lateral wind is 10 °);
fig. 6 is a partially enlarged view of a velocity vector diagram of an XZ plane flow field of a finite element simulation of the dynamic anti-icing spacer apparatus according to the embodiment of the present invention (in this state, an included angle between the rotating blades and the side wind is 10 °);
FIG. 7 is a control relationship block diagram according to embodiment 1 of the present invention;
FIG. 8 is a schematic view of a fan blade fixing steel tube;
FIG. 9 is a schematic view of the driving portion of the fan blade fixing steel tube;
FIG. 10 is a first schematic structural view of a powered anti-icing spacer assembly according to embodiment 2 of the present invention;
fig. 11 is a second schematic view of the structure of the power anti-icing spacer device provided by the embodiment 2 of the invention;
fig. 12 is a size view of the rotating blades in the powered anti-icing spacer apparatus according to embodiments 1 and 2 of the present invention;
FIG. 13 is a side view of FIG. 13;
FIG. 14 is a control relationship block diagram according to embodiment 2 of the present invention;
wherein the content of the first and second substances,
the wind power generation system comprises a solar cell panel 1, a rotating fan blade 2, a fan blade fixing steel tube 3, a steering motor 31, a driving gear 32, a driven gear 33, a wind direction sensor 4, a packaging box 5, a motor 6, a spacer 7 and a vertical axis wind driven generator 8.
Detailed Description
For better understanding of the present invention, the technical solutions and effects of the present invention will be described in detail by the embodiments with reference to the accompanying drawings.
Example 1
As shown in fig. 1-2, the aerodynamic anti-icing spacer device comprises a spacer 7, wherein a rotating fan blade 2 driven by a motor 6 and connected through a fan blade fixing steel pipe 3 is arranged in the middle of the spacer 7, the rotating fan blade 2 is fixed on the fan blade fixing steel pipe 3, and the fan blade fixing steel pipe 3 is rotatably connected to a frame of the spacer 7; the rotating fan blades 2 are uniformly distributed along the central axis of the spacer 7, and the rotating fan blades 2 rotate around the central axis of the spacer 7 under the driving of the motor 6; in the embodiment, a six-bundle conductor spacer 7 is adopted, three rotating fan blades 2 are uniformly distributed in the middle of the spacer 7 and are made of aluminum alloy, and the rotating speed is 2000rpm during rotation. A packaging box 5 is fixed on the frame of the spacer 7, a wind direction sensor 4 is arranged on the packaging box 5, and the wind direction sensor 4 measures the lateral wind direction; the packaging box 5 is internally provided with a sensor and a storage battery electrically connected with the sensor, wherein the sensor comprises a temperature sensor and a humidity sensor; the solar cell panel 1 is fixed on the frame of the spacer 7, the spacer device is also provided with a controller I and an inverter, the solar cell panel 1 is electrically connected with the storage battery through the controller I and the inverter to supply power for the storage battery in parallel, and the generated electric energy is stored in the storage battery to supply power for the motor 6 and the load of the storage battery; the first controller is electrically connected with the controller and used for preventing the storage battery from being overcharged or overdischarged, and the inverter converts direct current generated by the solar panel 1 into alternating current; meanwhile, the solar cell panel 1 is directly electrically connected with the motor 6 and the steering motor 31 through the controller I and the inverter. The control relationship is shown in fig. 7.
The packaging box 5 is internally provided with a steering motor 31, and as shown in fig. 8-9, the fan blade fixing steel tube 3 is in transmission connection with the steering motor 31 through a gear. The output end of the steering motor 31 is connected with a driving gear 32, the driving gear 32 is meshed with a driven gear 33, a motor base of the steering motor 31 and a gear shaft of the driven gear 33 are fixed on a connecting seat on the fan blade fixing steel pipe 3, the steering motor 31 rotates, the driven gear 33 and the fan blade fixing steel pipe 3 are driven to rotate through gear meshing, and therefore the fan blade fixing steel pipe 3 rotates, namely the fan blade rotates.
The aerodynamic anti-icing spacer device further comprises a controller which is arranged in the packaging box 5, and the motor 6, the steering motor 31, the temperature sensor, the humidity sensor and the wind direction sensor 4 are electrically connected with the controller.
The rotating fan blades 2 in this embodiment are shown in fig. 12-13.
The invention utilizes the spacers on the multi-bundle conductors for setting, does not need additional power supply, can be automatically supplied with power by the storage battery, and is provided with the temperature sensor, the humidity sensor, the wind direction sensor 4 and the rotating fan blades 2 of which the angles are changed according to the wind direction.
As shown in fig. 7, the working principle of the spacer apparatus provided in this embodiment is as follows: the illumination shines and produces the electric current on solar cell panel 1, and controller one judges whether the battery reaches the electric quantity limiting value to prevent the battery overcharge, if the battery has reached the electric quantity limiting value: at the moment, the power supply load is light, the charging power of the storage battery is reduced, and the storage battery supplies power independently; if the first controller judges that the storage battery does not reach the electric quantity limit value, the first controller continuously judges whether the storage battery is in an excessively low electric quantity state or not to prevent the storage battery from being excessively discharged, if the storage battery is not in the excessively low electric quantity state, the power supply load is large at the moment, normal charging power is kept, and the storage battery and the solar panel 1 supply power together; and if the storage battery is in an excessively low electric quantity state, the power supply to the storage battery is stopped, and the solar cell panel 1 supplies power independently. Meanwhile, data detected by the temperature sensor, the humidity sensor and the wind direction sensor 4 are transmitted to the controller, the data are compared with a temperature threshold, a humidity threshold and a wind speed threshold which are preset in the controller, the controller judges whether an icing condition is achieved, if the icing condition is not achieved, the controller continuously receives parameters and judges, when the controller judges that data fed back by the sensor meet the icing condition, namely the icing condition of the temperature below 0 DEG, the relative humidity above 80% and the wind speed of 1-20m/s, the motor 6 and the steering motor 31 are started, the rotating fan blades 2 rotate and rotate in a range of 0-10 DEG along with the incoming direction of the fan blade fixing steel pipe 3, generated wind pressure drives air to flow, the airflow direction around the wire is changed, the airflow vertical to the wire direction is enabled to be more parallel to the guide direction, the collision coefficient of water drops is reduced as shown in fig. 3, the collision coefficient of the water drops is reduced as shown in fig. 4, and therefore the quantity of the water drops colliding with the wire in unit time is reduced, the thickness of the wire is reduced, and the possibility of the occurrence of the icing due to the wire.
As shown in fig. 4, supercooled liquid droplets at infinity on a wire flow with an air flow to the wire at a velocity v, the liquid droplets are deflected in the positive/negative direction of the y-axis by the obstruction of the wire. E.g. a certain drop starting point is y away from the x-axis 0 The velocity v flows towards the wire, the trajectory of which is exactly tangential to the outside of the wire, y 0 The extreme position at which the droplets collide. When in useThe absolute value of the ordinate of the start position of the supercooled liquid droplets is less than y 0 The liquid droplet collides with the wire; when the absolute value of the ordinate of the supercooled liquid droplet starting position is larger than y 0 And does not collide with the wire, the supercooling droplet overall collision coefficient can be expressed as E = y 0 /R。
In order to check the effect of the invention, ansys Fluent finite element analysis software is utilized to simulate the influence of the device on the flow field around the conductor under the condition that the six-split conductor is subjected to the lateral wind perpendicular to the conductor, and the result is shown in fig. 5-6, wherein fig. 5 is a velocity vector diagram, and it can be seen that the flow field blowing to the X negative direction around the conductor is changed to the Z positive direction by the airflow generated by the rotating fan blade 2; fig. 6 is a Z-direction velocity cloud chart, which shows that the Z-direction velocity around the wire facing the wind direction of the wire can reach 4.5m/s. From the simulation result, the flow field generated by the rotating fan blade 2 can change the flow field direction around the lead, so that the collision coefficient of the split lead is reduced, and the ice coating amount of the lead is reduced.
Example 2
As shown in fig. 10 to 11, the present embodiment is different from embodiment 1 in that the solar panel 1 is not provided in the present embodiment, a vertical axis wind turbine 8 suitable for the full wind direction is used instead of the solar panel 1, and the rest of the arrangement and connection modes and the operation principle and mode are the same as those of embodiment 1.
The rotating fan blades 2 in this embodiment are shown in fig. 12-13.
As shown in fig. 14, the working principle of the spacer apparatus provided in this embodiment is as follows: the wind blows the vertical axis wind driven generator 8 to generate current, the controller I judges whether the storage battery reaches the electric quantity limit value or not to prevent the storage battery from being overcharged, and if the storage battery reaches the electric quantity limit value: at the moment, the power supply load is light, the charging power of the storage battery is reduced, and the storage battery supplies power independently; if the first controller judges that the storage battery does not reach the electric quantity limit value, the first controller continuously judges whether the storage battery is in an excessively low electric quantity state or not to prevent the storage battery from being excessively discharged, if the storage battery is not in the excessively low electric quantity state, the power supply load is large at the moment, normal charging power is kept, and the storage battery and the vertical axis wind driven generator 8 supply power together; and if the storage battery is in a low-power state, stopping supplying power to the storage battery, and independently supplying power to the vertical axis wind driven generator 8. Meanwhile, data detected by the temperature sensor, the humidity sensor and the wind direction sensor 4 are transmitted to the controller, the data are compared with a temperature threshold, a humidity threshold and a wind speed threshold which are preset in the controller, the controller judges whether an icing condition is met, if the icing condition is not met, the controller continuously receives parameters and judges, when the controller judges that data fed back by the sensor meet the icing condition, namely the icing condition of the temperature below 0 DEG, the relative humidity above 80% and the wind speed of 1-20m/s, the motor 6 and the steering motor 31 are started, the rotating fan blades 2 rotate and rotate in a range of 0-10 DEG along with the incoming direction of the fan blade fixing steel pipe 3, generated wind pressure drives air to flow, the direction of the air flow around the conducting wire is changed, and the air flow perpendicular to the conducting wire direction is enabled to be more parallel to the guiding direction.

Claims (7)

1. The utility model provides an anti-icing conductor spacer device of aerodynamic force which characterized in that: the spacer comprises a spacer, wherein the middle part of the spacer is provided with a rotating fan blade which is connected through a fan blade fixing steel pipe and driven by a motor, the rotating fan blade is fixed on the fan blade fixing steel pipe, and the fan blade fixing steel pipe is rotationally connected to a frame of the spacer; a packaging box is fixed on the frame of the spacer, a wind direction sensor is arranged on the packaging box, and a sensor and a storage battery electrically connected with the sensor are arranged in the packaging box; a solar cell panel or a vertical axis wind driven generator is fixed on the frame of the spacer, the generated electric energy is stored in a storage battery, and the storage battery supplies power for the load of the motor and the storage battery or directly supplies power for the load of the motor and the storage battery;
the aerodynamic anti-icing spacer device further comprises a controller, and the motor, the sensor and the wind direction sensor are electrically connected with the controller.
2. An aerodynamic anti-icing spacer device according to claim 1, characterised in that: the rotating fan blades are uniformly distributed along the central axis of the spacing rod and rotate around the central axis of the spacing rod under the driving of the motor.
3. An aerodynamic anti-icing spacer device according to claim 1, characterised in that: three rotating fan blades are uniformly distributed in the middle of the spacing rod.
4. An aerodynamic anti-icing spacer device according to claim 1, characterised in that: the sensor includes a temperature sensor and a humidity sensor.
5. An aerodynamic anti-icing spacer device according to claim 1, characterised in that: a steering motor is arranged in the packaging box and electrically connected with the controller, and the fan blade fixing steel pipe is in transmission connection with the steering motor through a gear; the output end of the steering motor is connected with a driving gear, the driving gear is meshed with a driven gear, a motor base of the steering motor and a gear shaft of the driven gear are fixed on a connecting base on the fan blade fixing steel pipe, the steering motor rotates, the driven gear and the fan blade fixing steel pipe are driven to rotate through gear meshing, and therefore the fan blade fixing steel pipe rotates, namely the fan blade rotates.
6. An aerodynamic anti-icing spacer device according to claim 1, characterised in that: the controller is arranged in the packaging box.
7. An aerodynamic anti-icing spacer device according to claim 1, characterised in that: the vertical axis wind driven generator is a vertical axis wind driven generator applicable to all wind directions.
CN202211038824.9A 2022-08-29 2022-08-29 Aerodynamic anti-icing spacer device Pending CN115333028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211038824.9A CN115333028A (en) 2022-08-29 2022-08-29 Aerodynamic anti-icing spacer device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211038824.9A CN115333028A (en) 2022-08-29 2022-08-29 Aerodynamic anti-icing spacer device

Publications (1)

Publication Number Publication Date
CN115333028A true CN115333028A (en) 2022-11-11

Family

ID=83928499

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211038824.9A Pending CN115333028A (en) 2022-08-29 2022-08-29 Aerodynamic anti-icing spacer device

Country Status (1)

Country Link
CN (1) CN115333028A (en)

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