CN115377914A - Multi-dimensional self-resetting energy dissipation and vibration reduction spacer and working method thereof - Google Patents
Multi-dimensional self-resetting energy dissipation and vibration reduction spacer and working method thereof Download PDFInfo
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- CN115377914A CN115377914A CN202210877225.XA CN202210877225A CN115377914A CN 115377914 A CN115377914 A CN 115377914A CN 202210877225 A CN202210877225 A CN 202210877225A CN 115377914 A CN115377914 A CN 115377914A
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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
- H02G7/125—Damping spacers
Abstract
The invention belongs to the technical field of power transmission lines, and provides a multi-dimensional self-resetting energy-consumption vibration-reduction spacer and a working method thereof. The multidimensional self-resetting energy dissipation vibration attenuation spacer comprises a plurality of connecting devices, energy dissipation devices, supporting devices and a cavity, wherein one end of each energy dissipation device is fixed on the corresponding supporting device, the other end of each energy dissipation device is connected with the corresponding connecting device, the inner cavity is connected with the corresponding supporting device through a connecting rod, and damping liquid is filled in the cavity; the energy consumption device is integrally sealed, the interior of the energy consumption device is filled with compressed gas, and the energy consumption device comprises an inner cylinder component and an outer cylinder component; when the wires are waved, the included angle between the two connecting devices on the same wire is changed, relative displacement is generated between the inner cylinder component and the outer cylinder component, compressed gas in the inner cylinder component and compressed gas in the outer cylinder component are forced to exchange, and the inertial volume damper is formed. The invention aims to reduce the galloping response of the power transmission line under wind load.
Description
Technical Field
The invention belongs to the technical field of power transmission lines, and particularly relates to a multi-dimensional self-resetting energy-consumption vibration-reduction spacer and a working method thereof.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Electric power is the national pillar energy and economic life line, and the safe and stable operation of the electric power is not only related to the national economic development, but also related to the national safety relation. Power transmission line safety has become a global concern. The transmission line is an important component of power transmission, and is very easily influenced by wind load due to the characteristics of large span, high flexibility and the like. The wire can generate low-frequency and large-amplitude self-excited vibration phenomena under the excitation of uneven ice coating and lateral wind, namely the power transmission line waves. Once the galloping happens, the line of the whole span can generate complex coupling vibration in the horizontal direction, the vertical direction and the twisting direction, which often causes accidents of strand breakage, alternate flashover, spacer tearing, hardware damage and even tower collapse of the line, seriously affects the safe and stable operation of a power grid, and causes great loss to national economy.
At present, in order to prevent the conductor from waving, a spacer is generally additionally arranged between the split conductors. The spacer can be divided into a damping spacer and a non-damping spacer according to different working characteristics, the damping spacer is suitable for various regions, and the spacer is characterized in that rubber is used as damping material at the movable joint to consume the vibration energy of the lead and generate damping action on the vibration of the lead.
When the conductor is waved, the motion mode of the conductor is complex, the existing conductor spacer can not meet the requirement of anti-galloping from all directions, and the energy consumption effect is weak.
Disclosure of Invention
The invention provides a multi-dimensional self-resetting energy dissipation spacer for reducing vibration in order to solve the problems, and aims to reduce galloping response of a power transmission line under wind load.
According to some embodiments, the invention adopts the following technical scheme:
in a first aspect, the invention provides a multi-dimensional self-resetting energy-dissipating vibration-damping spacer.
A multi-dimensional self-resetting energy dissipation spacer comprises: the damping device comprises a plurality of connecting devices, an energy consumption device, a supporting device and a cavity, wherein one end of the energy consumption device is fixed on the supporting device, the other end of the energy consumption device is connected with the connecting devices, the inner cavity is connected with the supporting device through a connecting rod, and damping liquid is filled in the cavity; the energy consumption device is integrally sealed, the interior of the energy consumption device is filled with compressed gas, and the energy consumption device comprises an inner cylinder component and an outer cylinder component;
when the wires are waved, the included angle between the two connecting devices on the same wire is changed, relative displacement is generated between the inner cylinder component and the outer cylinder component, compressed gas in the inner cylinder component and compressed gas in the outer cylinder component are forced to exchange, and the inerter damper is formed.
Furthermore, each connecting device comprises a T-shaped rod, an SMA disc-shaped gasket and a sleeve, the SMA disc-shaped gasket is filled in the sleeve, one end of the T-shaped rod extends into the sleeve to extrude the SMA disc-shaped gasket, and the other end of the T-shaped rod is fixed on the wire.
Furthermore, the outer side of the energy consumption device is provided with a U-shaped body.
Furthermore, the inner cylinder assembly comprises an inner cylinder, a cross plate and a center shaft, the U-shaped body is fixed at the joint of the cross plate through the center shaft and keeps synchronous rotation with the cross plate, a hole is formed in the side surface of the inner cylinder and is connected with the cross plate, and the cross plate divides the inner cylinder into four cavities.
Furthermore, the outer barrel assembly comprises an outer barrel and an outer plate, wherein the neat end of the outer plate is fixed on the outer barrel, and the staggered end is inserted into the hole of the inner barrel to divide the outer barrel into four cavities.
Furthermore, two connecting devices on the same wire are fixed on the outer cylinder, one connecting device is fixed on the U-shaped body, and the two connecting devices are arranged at a certain angle.
Furthermore, the supporting device comprises four L-shaped components which are connected end to end, each L-shaped component is connected through an SMA wire, friction plates are arranged on two sides of a joint, and a cushion rubber washer is arranged at a joint.
Furthermore, one end of the connecting rod is fixed on the supporting device, and the other end of the connecting rod is provided with a small ball.
Furthermore, the mass distribution of the cavity is uneven, a sliding rail is arranged on the outer side of the cavity, and the small ball rolls in the sliding rail.
In a second aspect, the invention provides a working method of a multi-dimensional self-resetting energy dissipation and vibration reduction spacer.
A working method of a multi-dimensional self-resetting energy dissipation vibration attenuation spacer comprises the following steps:
installing the multi-dimensional self-resetting energy dissipation vibration attenuation spacing rod on a split conductor of a high-voltage overhead line;
when the conducting wire waves, an included angle between two connecting devices on the same conducting wire is changed, relative displacement is generated between the inner cylinder component and the outer cylinder component, and compressed gas in the inner cylinder component and compressed gas in the outer cylinder component are forced to exchange to form an inertial volume damper;
when the connecting device drives the energy consumption device and the supporting device to synchronously move and adjacent L-shaped components in the supporting device generate relative displacement, the SMA wires at the connecting part between the L-shaped components are pulled to deform, so that the connecting rod rolls on the sliding rail in the inner cavity, the cavity rotates, the damping liquid in the cavity shakes, and the generated dynamic water pressure plays a role in energy consumption and vibration reduction;
due to the restorable deformability of the SMA wire and the uneven mass distribution of the cavity, the multidimensional self-resetting energy dissipation spacer returns to the initial state.
Compared with the prior art, the invention has the beneficial effects that:
(1) The vibration and torsion of the lead are controlled through various energy consumption modes, and the multidirectional vibration control of the lead is realized through the movement of the T-shaped rod in the sleeve and the rolling of the small ball in the sliding rail.
(2) The invention adds the connecting device of the lead, and when the lead waves, the asynchronous vibration between the oblique sub-leads is utilized to mutually restrain, thereby realizing the inter-phase waving restraining energy consumption of the lead.
(3) The invention improves the single energy consumption form of the traditional spacer, adopts multiple forms of SMA material, air spring, friction plate, inertial mass damper and the like to consume energy, and can restore the invention to the initial state because each device has good restorable deformability.
(4) The invention is mainly made of hollow bodies and light materials, has simple structure, light weight and obvious damping effect, can obviously inhibit the conductor from waving and has good economy and applicability.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic structural view of a multi-dimensional self-resetting energy-dissipating vibration-damping spacer;
FIG. 2 is a schematic diagram of an energy dissipation device in a multi-dimensional self-resetting energy dissipation vibration attenuation spacer;
FIG. 3 is a side view of an inner cylinder of a multi-dimensional self-resetting energy-dissipating vibration-damping spacer;
FIG. 4 is a schematic view of an outer plate in a multi-dimensional self-resetting energy-dissipating vibration-damping spacer;
FIG. 5 is a structural side view of a multi-dimensional self-resetting dissipative vibration damping spacer;
FIG. 6 is a schematic view of a structural installation of a multi-dimensional self-resetting dissipative vibration damping spacer;
in the figure: 1. a T-shaped rod; 2. an SMA disc washer; 3. a sleeve; 4. a U-shaped body; 5. an outer cylinder; 6. a middle shaft; 7. an L-shaped member; 8. a friction plate; 9. SMA wires; 10. a rubber gasket; 11. a connecting rod; 12. a pellet; 13. a slide rail; 14. a cavity; 15. damping fluid; 16. an outer plate; 17. an inner barrel; 18. a cross plate.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be understood that when the term "comprising" is used in this specification it indicates the presence of the feature, step, operation, device, component and/or combination thereof.
In the present invention, terms such as "inside", "outside", "end", "side", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only terms of relationships determined for convenience in describing structural relationships of the parts or elements of the present invention, and do not particularly indicate any parts or elements of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "fixed", "connected", and the like should be understood broadly, and mean either fixed connection, integral connection, or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
Example one
The embodiment provides a multi-dimensional self-resetting energy dissipation and vibration reduction spacer.
As shown in fig. 1-6, a multi-dimensional self-resetting energy-consumption vibration-reduction spacer comprises a connecting device, an energy-consumption device, a supporting device and an internal cavity, wherein one end of the energy-consumption device is fixed on the supporting device, the other end of the energy-consumption device is connected with the connecting device, the supporting device is formed by connecting four L-shaped components 7 end to end, the internal cavity is connected with the supporting device through four connecting rods, and damping liquid 15 is filled in the cavity 14.
As one or more embodiments, the connecting device consists of a T-shaped rod 1, an SMA disc washer 2 and a sleeve 3, wherein the SMA disc washer 2 is filled in the sleeve 3, one end of the T-shaped rod 1 extends into the sleeve to extrude the SMA disc washer 2, and the other end of the T-shaped rod is fixed on the wire.
As one or more embodiments, the energy consumption device comprises a central shaft 6, an outer cylinder 5, an outer plate 16, an inner cylinder 17, a cross plate 18 and an outer U-shaped body 4, wherein the U-shaped body is fixed at the joint of the cross plate 18 through the central shaft 6 and synchronously rotates with the cross plate 18, a hole is formed in the side surface of the inner cylinder 17 and is connected with the cross plate 18, the cross plate 18 divides the inner cylinder 17 into four cavities, the neat end of the outer plate 16 is fixed on the outer cylinder 5, and the staggered end is inserted into the hole of the inner cylinder 17 to divide the outer cylinder 5 into four cavities, as shown in FIGS. 2, 3 and 4.
In one or more embodiments, the energy consumption device is connected with the same wire through two connecting devices, wherein one connecting device is fixed on the outer cylinder 5 of the energy consumption device, the other connecting device is fixed on the U-shaped body 4 outside the energy consumption device, and the two connecting devices are installed at a certain angle.
As one or more embodiments, the supporting device comprises 4L-shaped components, each L-shaped component is connected through an SMA wire 9, friction plates 8 are arranged on two sides of the connection part, and a buffer rubber gasket 10 is arranged at the interface part.
In one or more embodiments, the connecting rod 11 is fixed to the support device at one end and carries a ball 12 at the other end.
In one or more embodiments, the inner cavity 14 has a non-uniform mass distribution, and is provided with a sliding track 13 on the outer side, and the ball 12 rolls in the sliding track.
In one or more embodiments, the energy consuming device is sealed as a whole and filled with compressed gas.
When the multi-dimensional self-resetting energy-consumption vibration-reduction spacing rod is used, the multi-dimensional self-resetting energy-consumption vibration-reduction spacing rod is arranged on a split conductor of a high-voltage overhead line, and when the conductor swings under the action of wind load, the T-shaped rod 1 is driven to synchronously vibrate, the SMA butterfly washer 2 is compressed to consume energy, and meanwhile, the length of a connecting device is changed, so that the included angle between two connecting devices connected to the same energy-consumption device is changed; the energy dissipation device is an air spring consisting of an inner cylinder assembly and an outer cylinder assembly, the outer cylinder assembly and the inner cylinder assembly generate relative displacement along with the change of an included angle of the connecting device, the cross plate 18 moves in the outer cylinder cavity, the staggered end of the outer plate 16 moves in the inner cylinder cavity, internal compressed gas is forced to exchange from the hole of the inner cylinder 17, and the holes of different cavities for gas exchange can be changed along with the movement of the outer plate 16, so that the inertial volume damper is formed; when the connecting device drives the energy consumption device and the supporting device to move synchronously and the adjacent L-shaped components 7 move relatively, the SMA wires 9 at the connecting part are stretched and deformed, the friction plate increases friction damping, and the rubber gasket 10 is pressed and deformed to consume energy in various forms; when the L-shaped component 7 moves, the small balls at the end points of the connecting rods are driven to move in the sliding rails of the cavity, so that the cavity rotates, damping liquid in the cavity also shakes, the generated dynamic water pressure plays a role in energy dissipation and vibration reduction, and the displacement can be increased and the energy dissipation effect is enhanced due to the fact that the mass distribution of the cavity is uneven. Meanwhile, the SMA material has obvious restorable deformability, and the mass distribution of the cavity is uneven, so that the SMA material can be restored to the initial state.
Example two
The embodiment provides a working method of a multi-dimensional self-resetting energy dissipation and vibration reduction spacer.
A working method of a multi-dimensional self-resetting energy dissipation vibration attenuation spacer comprises the following steps:
installing the multi-dimensional self-resetting energy dissipation vibration attenuation spacer bar on the split conductor of the high-voltage overhead line;
when the conducting wire waves, the included angle between the two connecting devices on the same conducting wire is changed, relative displacement is generated between the inner cylinder component and the outer cylinder component, compressed gas in the inner cylinder component and compressed gas in the outer cylinder component are forced to exchange, and an inertial volume damper is formed;
when the connecting device drives the energy consumption device and the supporting device to synchronously move and adjacent L-shaped components in the supporting device generate relative displacement, the SMA wires at the connecting part between the L-shaped components are pulled to deform, so that the connecting rod rolls on the sliding rail in the inner cavity, the cavity rotates, the damping liquid in the cavity shakes, and the generated dynamic water pressure plays a role in energy consumption and vibration reduction;
due to the restorable deformability of the SMA wire and the uneven mass distribution of the cavity, the multidimensional self-resetting energy dissipation spacer returns to the initial state.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A multidimension is from restoring to throne power consumption damping conductor spacer which characterized in that includes: the damping device comprises a plurality of connecting devices, an energy consumption device, a supporting device and a cavity, wherein one end of the energy consumption device is fixed on the supporting device, the other end of the energy consumption device is connected with the connecting devices, the inner cavity is connected with the supporting device through a connecting rod, and damping liquid is filled in the cavity; the energy consumption device is integrally sealed, the interior of the energy consumption device is filled with compressed gas, and the energy consumption device comprises an inner cylinder component and an outer cylinder component;
when the wires are waved, the included angle between the two connecting devices on the same wire is changed, relative displacement is generated between the inner cylinder component and the outer cylinder component, compressed gas in the inner cylinder component and compressed gas in the outer cylinder component are forced to exchange, and the inertial volume damper is formed.
2. The multi-dimensional self-resetting energy-dissipating vibration-damping spacer bar as claimed in claim 1, wherein each connecting device comprises a T-shaped rod, an SMA disc washer and a sleeve, the SMA disc washer is filled in the sleeve, one end of the T-shaped rod extends into the sleeve to press the SMA disc washer, and the other end of the T-shaped rod is fixed on the wire.
3. The spacer bar as claimed in claim 1, wherein the dissipation device is provided with a U-shaped member on the outside.
4. The multi-dimensional self-resetting energy-dissipating vibration-damping spacer as claimed in claim 3, wherein the inner cylinder assembly comprises an inner cylinder, a cross plate and a center shaft, the U-shaped body is fixed at the joint of the cross plate through the center shaft and keeps synchronous rotation with the cross plate, the inner cylinder is provided with a hole on the side and is connected with the cross plate, and the cross plate divides the inner cylinder into four cavities.
5. The multi-dimensional self-resetting energy-dissipating vibration-damping spacer as claimed in claim 4, wherein the outer cylinder assembly comprises an outer cylinder and an outer plate, the flush end of the outer plate is fixed on the outer cylinder, and the staggered end is inserted into the hole of the inner cylinder to divide the outer cylinder into four cavities.
6. The spacer bar as claimed in claim 5, wherein two connectors are fixed to the outer cylinder and the U-shaped body, and the two connectors are installed at an angle.
7. The multi-dimensional self-resetting energy-dissipating vibration-damping spacer bar as claimed in claim 1, wherein the supporting device comprises four L-shaped members, the four L-shaped members are connected end to end, each L-shaped member is connected through an SMA wire, friction plates are arranged on two sides of the joint, and a buffer rubber washer is arranged at the joint.
8. The spacer for multi-dimensional self-resetting energy-dissipating and vibration-damping as claimed in claim 1, wherein one end of the connecting rod is fixed on the supporting device, and the other end is provided with a small ball.
9. The multi-dimensional self-resetting energy-dissipating vibration-damping spacer bar as claimed in claim 8, wherein the mass distribution of the cavity is uneven, and the outer side of the cavity is provided with a slide rail, and the small balls roll in the slide rail.
10. A working method of a multi-dimensional self-resetting energy dissipation vibration attenuation spacer is characterized by comprising the following steps:
installing the multi-dimensional self-resetting dissipative vibration damping spacer according to any one of claims 1 to 9 on a split conductor of a high-voltage overhead line;
when the conducting wire waves, the included angle between the two connecting devices on the same conducting wire is changed, relative displacement is generated between the inner cylinder component and the outer cylinder component, compressed gas in the inner cylinder component and compressed gas in the outer cylinder component are forced to exchange, and an inertial volume damper is formed;
when the connecting device drives the energy consumption device and the supporting device to synchronously move and adjacent L-shaped components in the supporting device generate relative displacement, the SMA wires at the connecting part between the L-shaped components are in tension deformation, so that the connecting rod rolls on the sliding rail in the inner cavity, the cavity rotates, the damping liquid in the cavity shakes, and the generated dynamic water pressure plays a role in energy consumption and vibration reduction;
due to the restorable deformability of the SMA wire and the uneven mass distribution of the cavity, the multidimensional self-resetting energy dissipation spacer returns to the initial state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210877225.XA CN115377914A (en) | 2022-07-25 | 2022-07-25 | Multi-dimensional self-resetting energy dissipation and vibration reduction spacer and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210877225.XA CN115377914A (en) | 2022-07-25 | 2022-07-25 | Multi-dimensional self-resetting energy dissipation and vibration reduction spacer and working method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN115377914A true CN115377914A (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210877225.XA Pending CN115377914A (en) | 2022-07-25 | 2022-07-25 | Multi-dimensional self-resetting energy dissipation and vibration reduction spacer and working method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115036874A (en) * | 2022-07-19 | 2022-09-09 | 东北电力大学 | Spacer capable of swinging and automatically resetting |
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2022
- 2022-07-25 CN CN202210877225.XA patent/CN115377914A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115036874A (en) * | 2022-07-19 | 2022-09-09 | 东北电力大学 | Spacer capable of swinging and automatically resetting |
| CN115036874B (en) * | 2022-07-19 | 2023-08-11 | 东北电力大学 | Spacer capable of swinging and automatically resetting |
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