CN110994518A - Overhead wire energy collecting device - Google Patents

Overhead wire energy collecting device Download PDF

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Publication number
CN110994518A
CN110994518A CN201911193056.2A CN201911193056A CN110994518A CN 110994518 A CN110994518 A CN 110994518A CN 201911193056 A CN201911193056 A CN 201911193056A CN 110994518 A CN110994518 A CN 110994518A
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China
Prior art keywords
spring
protective shell
energy
permanent magnet
mutual inductance
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CN201911193056.2A
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Inventor
赵彬
杨加伦
张立春
费香泽
程永锋
王景朝
展雪萍
李鹏
姬昆鹏
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
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Priority to CN201911193056.2A priority Critical patent/CN110994518A/en
Publication of CN110994518A publication Critical patent/CN110994518A/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
    • H02G7/14—Arrangements or devices for damping mechanical oscillations of lines, e.g. for reducing production of sound
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention provides an overhead conductor energy collecting device which comprises a hollow protective shell (1), an electromagnetic mutual inductance assembly, a charging circuit, a first spring (2) and a second spring (3), wherein the electromagnetic mutual inductance assembly is positioned in the protective shell (1); the charging circuit is connected with the electromagnetic mutual inductance assembly, the electromagnetic mutual inductance assembly is connected with the inner wall of the protective shell (1) through the first spring (2) and the second spring (3) respectively, the electromagnetic mutual inductance assembly is used for converting the vibration energy into electric energy, not only can absorb the energy in the process of breeze vibration or conductor galloping and convert mechanical energy into electric energy, but also has the functions of improving the self damping of the conductor and inhibiting the breeze vibration and ice coating galloping; the energy collecting device provided by the invention is not only suitable for the alternating-current overhead conductor, but also suitable for the direct-current overhead conductor.

Description

Overhead wire energy collecting device
Technical Field
The invention relates to the technical field of disaster prevention and reduction of a power grid, in particular to an overhead conductor energy collecting device.
Background
The current common equipment for perceiving the running state of the overhead conductor is an online monitoring device for a power transmission line, and the online monitoring energy supply device comprises a solar cell panel and a storage battery or comprises an induction electricity taking device and a storage battery. The online monitoring energy supply device comprising the solar cell panel and the storage battery is limited in size and mass, is mostly arranged on a tower, is easy to cause slow energy conversion in long-time rainy weather, and cannot effectively supply power to equipment arranged on an overhead conductor; and the on-line monitoring energy supply device comprising the induction electricity taking device and the storage battery cannot monitor the alternating-current overhead conductor for a long time and at a high frequency due to extremely low efficiency of obtaining energy, and cannot be used on the direct-current overhead conductor.
The wind-induced vibration of the overhead conductor is one of the common phenomena of the overhead conductor, and mainly comprises breeze vibration (5 Hz-120 Hz), sub-span vibration (1 Hz-3 Hz), icing galloping (0.1 Hz-3 Hz) and windage yaw. The breeze vibration and the ice-coated galloping have obvious vertical vibration characteristics, particularly the breeze vibration, the occurrence time is long, but the breeze vibration belongs to mechanical energy, the frequency domain characteristic difference of the breeze vibration and the ice-coated galloping is large, and the resonance structure in the prior art cannot realize energy absorption and conversion.
Disclosure of Invention
In order to overcome the defect that the energy absorption and conversion cannot be realized in the prior art, the invention provides an overhead conductor energy collecting device, which comprises a hollow protective shell (1), an electromagnetic mutual inductance assembly, a charging circuit, a first spring (2) and a second spring (3), wherein the electromagnetic mutual inductance assembly is positioned in the protective shell (1); the charging circuit is connected with the electromagnetic mutual inductance assembly, the electromagnetic mutual inductance assembly is connected with the inner wall of the protective shell (1) through the first spring (2) and the second spring (3) respectively, the electromagnetic mutual inductance assembly is used for converting vibration energy into electric energy, not only can the energy in the process of breeze vibration or conductor galloping be absorbed, the mechanical energy is converted into the electric energy, but also the functions of improving the self damping of the conductor, inhibiting the breeze vibration and icing galloping are achieved.
In order to achieve the purpose of the invention, the invention adopts the following technical scheme:
the invention provides an overhead conductor energy collecting device which comprises a hollow protective shell (1), an electromagnetic mutual inductance assembly, a charging circuit, a first spring (2) and a second spring (3), wherein the electromagnetic mutual inductance assembly is positioned in the protective shell (1);
the charging circuit is connected with the electromagnetic mutual inductance assembly, the electromagnetic mutual inductance assembly is connected with the inner wall of the protective shell (1) through the first spring (2) and the second spring (3) respectively, and the electromagnetic mutual inductance assembly is used for converting vibration energy into electric energy.
The electromagnetic mutual inductance assembly is located in the middle of the protective shell (1), is perpendicular to the first spring (2) and the second spring (3), and is equal to the height of the hollow portion of the protective shell (1).
The electromagnetic mutual inductance assembly comprises an induction coil and a permanent magnet;
the two induction coils are respectively fixed on the upper wall and the lower wall inside the protective shell (1), the permanent magnet is arranged in the two induction coils and is horizontally connected to the circle centers of the two end faces of the protective shell (1) through a first spring (2) and a second spring (3);
the height of the permanent magnet is 95% -105% of the height of the induction coil, and the aspect ratio of the permanent magnet is 2.5-5;
the two induction coils are equal in height, the height of each induction coil is 30% of that of the hollow portion of the protective shell (1), and the diameter of each induction coil is 1.1-1.2 times of the transverse width of the permanent magnet.
The two permanent magnets are arranged, one ends of the two permanent magnets are respectively fixed to the upper wall and the lower wall of the middle position in the protective shell (1), the other ends of the two permanent magnets are arranged in the induction coil, and the induction coil is horizontally connected to the circle centers of the two end faces of the protective shell (1) through the first spring (2) and the second spring (3);
the height of the permanent magnet is equal to that of the hollow part of the protective shell (1), and the aspect ratio of the permanent magnet is 5-10;
the height of the induction coil is 20% -80% of the height of the hollow part of the protective shell (1), and the diameter of the induction coil is 1.1-1.2 times of the transverse width of the permanent magnet.
The charging circuit comprises a storage battery and a circuit board;
the storage battery and the circuit board are fixed on the inner wall of the protective shell (1), and the storage battery is connected with the induction coil through the circuit board.
The height of well kenozooecium in protective housing (1) is 5 ~ 20cm, and its length is greater than the height of well kenozooecium, and its thickness is 5 ~ 10 mm.
The permanent magnet is a cylinder or a cuboid; the transverse width is 5-20 mm;
the protective shell (1) is made of aluminum alloy or carbon steel;
the permanent magnet is made of iron.
The first spring (2) and the second spring (3) are cylindrical springs or conical springs, and the lengths and the rigidity of the first spring and the second spring are equal.
The linear stiffness of the energy collecting device is determined based on the pretightening force and the length of the first spring (2)/the second spring (3), and the cubic stiffness of the energy collecting device is determined based on the pretightening force, the length and the stiffness of the first spring (2)/the second spring (3).
The linear stiffness of the energy concentrating device is determined as follows:
Figure BDA0002294058220000021
in the formula, k1F is the pretightening force of the first spring (2)/the second spring (3) and l is the length of the first spring (2)/the second spring (3) for the linear stiffness of the energy collecting device.
The cubic stiffness of the energy concentrating device is determined as follows:
Figure BDA0002294058220000031
in the formula, k3K is the stiffness of the first spring (2)/the second spring (3) for the cubic stiffness of the energy concentrating device.
The electromagnetic mutual inductance assembly is connected with the first spring (2), the first spring (2) is connected with the protective shell (1), the electromagnetic mutual inductance assembly is connected with the second spring (3), and the second spring (3) is connected with the protective shell (1) in a welding or hanging ring mode.
Compared with the closest prior art, the technical scheme provided by the invention has the following beneficial effects:
the invention provides an overhead conductor energy collecting device which comprises a hollow protective shell (1), an electromagnetic mutual inductance assembly, a charging circuit, a first spring (2) and a second spring (3), wherein the electromagnetic mutual inductance assembly is positioned in the protective shell (1); the charging circuit is connected with the electromagnetic mutual inductance assembly, the electromagnetic mutual inductance assembly is connected with the inner wall of the protective shell (1) through the first spring (2) and the second spring (3) respectively, the electromagnetic mutual inductance assembly is used for converting vibration energy into electric energy, not only can absorb energy in the process of breeze vibration or conductor galloping and convert mechanical energy into electric energy, but also has the functions of improving the self damping of the conductor and inhibiting the breeze vibration and ice coating galloping;
the linear rigidity and the cubic rigidity of the energy collecting device are determined based on the nonlinear energy tank theory, and the wind-induced vibration energy of the wire is effectively utilized;
the energy collecting device provided by the invention can realize the conversion of energy from mechanical energy generated by wind-induced vibration to electric energy in rainy days for a long time, and collect the converted electric energy to supply power for equipment installed on an overhead conductor;
the energy collecting device provided by the invention is not only suitable for the alternating-current overhead conductor, but also suitable for the direct-current overhead conductor.
Drawings
FIG. 1 is a schematic illustration of an overhead conductor energy concentrator installation in an embodiment of the present invention;
fig. 2 is a structural view of an overhead conductor energy collecting device in the embodiment of the invention;
fig. 3 is another structural view of an overhead conductor energy collecting device in the embodiment of the invention;
FIG. 4 is a schematic diagram of geometric non-linearity in an embodiment of the present invention;
in the figure, 1, a protective shell, 2, a first spring, 3, a second spring, 4, an overhead conductor, 5, a third permanent magnet, 6, a first induction coil, 7, a second induction coil, 8, a first permanent magnet, 9, a third induction coil, 10, a second permanent magnet, 11, an energy collecting device, 12 and a connecting plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1
Embodiment 1 of the present invention provides an overhead conductor energy collecting device, as shown in fig. 1, an energy collecting device 11 is welded to a yoke plate 12, and the yoke plate 12 is fixed to an overhead conductor 4 through a wire clamp, or the yoke plate 12 is fixed to a spacer through a wire clamp, so as to realize conversion and collection of mechanical energy to electric energy generated in wind-induced waving of the overhead conductor.
The energy collecting device provided by the embodiment 1 of the invention comprises a hollow protective shell 1, an electromagnetic mutual inductance assembly positioned in the protective shell 1, a charging circuit, a first spring 2 and a second spring 3;
the charging circuit is connected with the electromagnetic mutual inductance assembly, the electromagnetic mutual inductance assembly is connected with the inner wall of the protective shell 1 through the first spring 2 and the second spring 3 respectively, and the electromagnetic mutual inductance assembly is used for converting vibration energy into electric energy.
The electromagnetic mutual inductance assembly is positioned in the middle of the protective shell 1, is perpendicular to the first spring 2 and the second spring 3, and is equal to the height of the hollow part of the protective shell 1 in height.
As shown in fig. 2, the electromagnetic trans assembly includes an induction coil and a permanent magnet; induction coil has two, first induction coil 6 in fig. 2, second induction coil 7, the permanent magnet has one, first permanent magnet 8 in fig. 2, the upper end of first induction coil 6 and the lower extreme of second induction coil 7 are fixed in the inside upper wall and the lower wall of protective housing 1 respectively, 6 lower extremes of first induction coil and second induction coil 7 upper end are the free end, first permanent magnet 8 sets up in two induction coil, first permanent magnet 8's upper end is arranged in inside the lower extreme of first induction coil 6 promptly, inside second induction coil 7's upper end is arranged in to its lower extreme.
The first permanent magnet 8 is horizontally connected to the circle centers of the two end surfaces of the protective shell 1 through the first spring 2 and the second spring 3;
the charging circuit comprises a storage battery and a circuit board;
the storage battery and the circuit board are fixed on the inner wall of the protective shell 1, and the storage battery is connected with the first induction coil 6 and the second induction coil 7 through the circuit board.
The height of the hollow part in the protective shell 1 is 5-20 cm, the length of the hollow part is larger than the height of the hollow part, and the thickness of the hollow part is 5-10 mm.
The first permanent magnet 8 is a cylinder or a cuboid, and the transverse width is 5-20 mm;
the height of the first permanent magnet 8 is 95% -105% of the height of the first induction coil 6/the second induction coil 7, and the aspect ratio of the first permanent magnet is 2.5-5;
the first induction coil 6 and the second induction coil 7 are both cylindrical spiral windings, the first induction coil 6 and the second induction coil 7 are equal in height, the height of the first induction coil and the height of the second induction coil are both 30% of the height of the hollow part of the protective shell 1, and the diameters of the first induction coil and the second induction coil are both 1.1-1.2 times of the transverse width of the first permanent magnet 8;
the protective shell 1 is made of aluminum alloy or carbon steel;
the first permanent magnet 8 is made of iron.
The first spring 2 and the second spring 3 are cylindrical springs or conical springs, and the lengths and the rigidity of the two springs are equal.
The Nonlinear Energy Sink (NES) theory is a novel vibration absorber technology developed on the basis of a dynamic vibration absorber, and the purposes of widening the vibration absorption frequency range and improving the vibration absorption effect are achieved by changing the linear stiffness and damping of the traditional vibration absorption system (for example, introducing a Nonlinear spring into the traditional vibration absorption system with a damping spring). The nonlinear vibration absorber after optimized design can absorb the vibration energy of the main structure in a wider frequency domain, and has the characteristics of small additional mass, strong adaptability and good economical efficiency.
The embodiment 1 of the invention determines the linear stiffness and the cubic stiffness of the energy collector based on NES, and the advantage of geometric nonlinearity is that the nonlinear characteristic can be realized by using linear springs, and a specific geometric nonlinearity schematic diagram is shown in FIG. 4. in FIG. 4, F is the pretightening force of a first spring 2 and a second spring 3, l is the length of the first spring 2 and the second spring 3, F is the combined external force of the energy collector, Δ s is the displacement of a first permanent magnet 8, and Δ l is the axial elongation of the first spring 2 and the second spring 3. The relationship expressed in fig. 4 is as follows:
Figure BDA0002294058220000051
in the above formula, the left side of the equal sign is a force vector triangle, and the right side is a deformation triangle.
The corresponding geometrical relationship is as follows:
l2+Δs2＝(l+Δl)2
combined stand
Figure BDA0002294058220000052
And l2+Δs2＝(l+Δl)2Elimination of Δ l gives:
Figure BDA0002294058220000053
will be provided with
Figure BDA0002294058220000054
Taylor expansion is performed near the origin Δ s ═ 0, and the first cubic term is retained, then:
Figure BDA0002294058220000055
therefore, it can be seen that the linear stiffness of the energy collector is determined based on the pretension and length of the first spring 2/the second spring 3, and the cubic stiffness thereof is determined based on the pretension, length and stiffness of the first spring 2/the second spring 3.
The linear stiffness of the energy collector is determined as follows:
Figure BDA0002294058220000061
in the formula, k1For the linear stiffness of the energy collecting device, f is the pretightening force of the first spring 2/the second spring 3, and l is the length of the first spring 2/the second spring 3.
The cubic stiffness of the energy collector is determined as follows:
Figure BDA0002294058220000062
in the formula, k3K is the stiffness of the first spring 2/second spring 3 for the cubic stiffness of the energy collector.
The mutual inductance electromagnetic component is connected with the first spring 2, the first spring 2 is connected with the protective shell 1, the mutual inductance electromagnetic component is connected with the second spring 3, and the second spring 3 is connected with the protective shell 1 in a welding or hanging ring mode.
The energy collecting device provided by the embodiment 1 of the invention can absorb energy in the process of breeze vibration or conductor galloping, convert mechanical energy into electric energy, and convert the energy into the electric energy for use by on-line monitoring equipment.
Example 2
Embodiment 2 of the present invention provides an overhead conductor energy collecting device, as shown in fig. 1, an energy collecting device 11 is welded to a yoke plate 12, and the yoke plate 12 is fixed to an overhead conductor 4 through a wire clamp, or the yoke plate 12 is fixed to a spacer through a wire clamp, so as to realize conversion and collection of mechanical energy to electric energy generated in wind-induced waving of the overhead conductor.
The energy collecting device provided by the embodiment 2 of the invention comprises a hollow protective shell 1, an electromagnetic mutual inductance assembly positioned in the protective shell 1, a charging circuit 5, a first spring 2 and a second spring 3;
the charging circuit 5 is connected with the electromagnetic mutual inductance assembly, the electromagnetic mutual inductance assembly is connected with the inner wall of the protective shell 1 through the first spring 2 and the second spring 3 respectively, and the electromagnetic mutual inductance assembly is used for converting vibration energy into electric energy.
The electromagnetic mutual inductance assembly is positioned in the middle of the protective shell 1, is perpendicular to the first spring 2 and the second spring 3, and is equal to the height of the hollow part of the protective shell 1 in height.
The electromagnetic trans assembly includes an induction coil having one, i.e., a third induction coil 9 in fig. 3, and two permanent magnets, i.e., a second permanent magnet 10 and a third permanent magnet 5 in fig. 3, as shown in fig. 3;
the respective one end of second permanent magnet 10 and third permanent magnet 5 is fixed in upper wall and the lower wall of the inside intermediate position of protective housing 1 respectively, and induction coil is arranged in to respective other end, specifically is that the upper end of second permanent magnet 10 is fixed in the upper wall of the inside intermediate position of protective housing 1, and the lower extreme of second permanent magnet 10 is located inside third induction coil 9 upper end, and the lower extreme of third permanent magnet 5 is fixed in the lower wall of the inside intermediate position of protective housing 1, and the upper end of third permanent magnet 5 is located inside third induction coil 9 lower extreme.
The induction coil is horizontally connected to the circle centers of the two end surfaces of the protective shell 1 through the first spring 2 and the second spring 3.
The charging circuit 5 comprises a storage battery and a circuit board;
the storage battery and the circuit board are fixed on the inner wall of the protective shell 1, and the storage battery is connected with the third induction coil 9 through the circuit board.
The height of the hollow part in the protective shell 1 is 5-20 cm, the length of the hollow part is larger than the height of the hollow part, and the thickness of the hollow part is 5-10 mm.
The second permanent magnet 10 and the third permanent magnet 5 are both cylinders or cuboids; the two are the same in size, and the horizontal width is 5 ~ 20mm, and the height equals the height of the hollow portion in protective housing 1, and its aspect ratio is 5 ~ 10.
The third induction coil 9 is a cylindrical spiral winding, the height of the third induction coil is 20% -80% of the height of the hollow part of the protective shell 1, and the diameter of the third induction coil is 1.1-1.2 times of the transverse width of the second permanent magnet 10.
The protective shell 1 is made of aluminum alloy or carbon steel;
the second permanent magnet 10 and the third permanent magnet 5 are both made of iron.
The first spring 2 and the second spring 3 are cylindrical springs or conical springs, and the lengths and the rigidity of the two springs are equal.
The Nonlinear Energy Sink (NES) theory is a novel vibration absorber technology developed on the basis of a dynamic vibration absorber, and the purposes of widening the vibration absorption frequency range and improving the vibration absorption effect are achieved by changing the linear stiffness and damping of the traditional vibration absorption system (for example, introducing a Nonlinear spring into the traditional vibration absorption system with a damping spring). The nonlinear vibration absorber after optimized design can absorb the vibration energy of the main structure in a wider frequency domain, and has the characteristics of small additional mass, strong adaptability and good economical efficiency.
Embodiment 2 of the present invention determines the linear stiffness and the cubic stiffness of the energy concentrator based on NES, and the advantage of the geometric nonlinearity is that the nonlinear characteristics can be realized by using linear springs, and a specific geometric nonlinearity schematic diagram is shown in fig. 4, where in fig. 4, F is the pretightening force of the first spring 2 and the second spring 3, l is the length of the first spring 2 and the second spring 3, F is the combined external force of the energy concentrator, Δ s is the displacement of the third induction coil 9, and Δ l is the axial elongation of the first spring 2 and the second spring 3. The relationship expressed in fig. 4 is as follows:
Figure BDA0002294058220000071
in the above formula, the left side of the equal sign is a force vector triangle, and the right side is a deformation triangle.
The corresponding geometrical relationship is as follows:
l2+Δs2＝(l+Δl)2
combined stand
Figure BDA0002294058220000072
And l2+Δs2＝(l+Δl)2Elimination of Δ l gives:
Figure BDA0002294058220000081
will be provided with
Figure BDA0002294058220000082
Taylor expansion is performed near the origin Δ s ═ 0, and the first cubic term is retained, then:
Figure BDA0002294058220000083
therefore, it can be seen that the linear stiffness of the energy collector is determined based on the pretension and length of the first spring 2/the second spring 3, and the cubic stiffness thereof is determined based on the pretension, length and stiffness of the first spring 2/the second spring 3.
The linear stiffness of the energy collector is determined as follows:
Figure BDA0002294058220000084
in the formula, k1For the linear stiffness of the energy collecting device, f is the pretightening force of the first spring 2/the second spring 3, and l is the length of the first spring 2/the second spring 3.
The cubic stiffness of the energy collector is determined as follows:
Figure BDA0002294058220000085
in the formula, k3K is the stiffness of the first spring 2/second spring 3 for the cubic stiffness of the energy collector.
The mutual inductance electromagnetic component is connected with the first spring 2, the first spring 2 is connected with the protective shell 1, the mutual inductance electromagnetic component is connected with the second spring 3, and the second spring 3 is connected with the protective shell 1 in a welding or hanging ring mode.
The energy collecting device provided by the embodiment 2 of the invention can absorb energy in the process of breeze vibration or conductor galloping, convert mechanical energy into electric energy, and convert the energy into the electric energy for use by on-line monitoring equipment.
Finally, it should be noted that: the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and a person of ordinary skill in the art can make modifications or equivalents to the specific embodiments of the present invention with reference to the above embodiments, and such modifications or equivalents without departing from the spirit and scope of the present invention are within the scope of the claims of the present invention as set forth in the claims.

Claims (14)

1. An overhead conductor energy collecting device is characterized by comprising a hollow protective shell (1), an electromagnetic mutual inductance assembly, a charging circuit, a first spring (2) and a second spring (3), wherein the electromagnetic mutual inductance assembly is positioned in the protective shell (1);
the charging circuit is connected with the electromagnetic mutual inductance assembly, the electromagnetic mutual inductance assembly is connected with the inner wall of the protective shell (1) through the first spring (2) and the second spring (3) respectively, and the electromagnetic mutual inductance assembly is used for converting the vibration energy into the electric energy.
2. The overhead conductor energy collecting device according to claim 1, characterized in that the electromagnetic mutual inductance assembly is located in the middle of the protective shell (1) and is arranged perpendicular to the first spring (2) and the second spring (3), and the height of the electromagnetic mutual inductance assembly is equal to the height of the hollow part of the protective shell (1).
3. The overhead conductor energy concentrating apparatus of claim 1, wherein the electromagnetic trans-inductance assembly includes an induction coil and a permanent magnet.
4. The overhead conductor energy collecting device according to claim 3, wherein there are two induction coils, which are fixed on the upper wall and the lower wall inside the protective casing (1), respectively, the permanent magnet is arranged in the two induction coils, and the permanent magnet is horizontally connected to the centers of the two end faces of the protective casing (1) through the first spring (2) and the second spring (3);
the height of the permanent magnet is 95% -105% of the height of the induction coil, and the aspect ratio of the permanent magnet is 2.5-5;
the two induction coils are equal in height, the height of each induction coil is 30% of that of the hollow portion of the protective shell (1), and the diameter of each induction coil is 1.1-1.2 times of the transverse width of the permanent magnet.
5. The overhead conductor energy collecting device according to claim 3, wherein there are two permanent magnets, one end of each of the two permanent magnets is fixed to the upper wall and the lower wall of the protective casing (1) at the middle position, and the other end of each of the two permanent magnets is placed in an induction coil, and the induction coil is horizontally connected to the centers of the two end faces of the protective casing (1) through a first spring (2) and a second spring (3);
the height of the permanent magnet is equal to that of the hollow part of the protective shell (1), and the aspect ratio of the permanent magnet is 5-10;
the height of the induction coil is 20% -80% of the height of the hollow part of the protective shell (1), and the diameter of the induction coil is 1.1-1.2 times of the transverse width of the permanent magnet.
6. The overhead conductor energy concentrating apparatus of claim 3, wherein the charging circuit comprises a battery and a circuit board;
the storage battery and the circuit board are fixed on the inner wall of the protective shell (1), and the storage battery is connected with the induction coil through the circuit board.
7. The overhead conductor energy collecting device according to claim 2, wherein the height of the hollow part of the protective shell (1) is 5-20 cm, the length of the hollow part is greater than the height of the hollow part, and the thickness of the hollow part is 5-10 mm.
8. The overhead conductor energy collecting device of claim 3, wherein the permanent magnet is a cylinder or a cuboid, and the transverse width of the permanent magnet is 5-20 mm.
9. The overhead conductor energy collecting device according to claim 3, characterized in that the protective shell (1) is made of aluminum alloy or carbon steel;
the permanent magnet is made of iron.
10. The overhead conductor energy collecting device according to claim 1, characterized in that the first spring (2) and the second spring (3) are cylindrical springs or conical springs, and the lengths and the stiffness of the two springs are equal.
11. The overhead conductor energy concentrator of claim 10, wherein the linear stiffness of the energy concentrator is determined based on the pretension and length of the first spring (2)/the second spring (3), and the cubic stiffness is determined based on the pretension, length, and stiffness of the first spring (2)/the second spring (3).
12. The overhead conductor energy concentrator of claim 11, wherein the linear stiffness of the energy concentrator is determined according to the following equation:
Figure FDA0002294058210000021
in the formula, k1F is the pretightening force of the first spring (2)/the second spring (3) and l is the length of the first spring (2)/the second spring (3) for the linear stiffness of the energy collecting device.
13. The overhead conductor energy concentrator of claim 11, wherein the cubic stiffness of the energy concentrator is determined according to the following equation:
Figure FDA0002294058210000022
in the formula, k3K is the stiffness of the first spring (2)/the second spring (3) for the cubic stiffness of the energy concentrating device.
14. The overhead conductor energy collecting device according to claim 1, wherein the electromagnetic mutual inductance assembly is connected with the first spring (2), the first spring (2) is connected with the protective shell (1), the electromagnetic mutual inductance assembly is connected with the second spring (3), and the second spring (3) is connected with the protective shell (1) in a welding or hanging ring mode.
CN201911193056.2A 2019-11-28 2019-11-28 Overhead wire energy collecting device Pending CN110994518A (en)

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CN201911193056.2A CN110994518A (en) 2019-11-28 2019-11-28 Overhead wire energy collecting device

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Application Number Priority Date Filing Date Title
CN201911193056.2A CN110994518A (en) 2019-11-28 2019-11-28 Overhead wire energy collecting device

Publications (1)

Publication Number Publication Date
CN110994518A true CN110994518A (en) 2020-04-10

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Application Number Title Priority Date Filing Date
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