CN111668790B - Cable spacer for assisting in slowing down vibration of high-altitude cable - Google Patents
Cable spacer for assisting in slowing down vibration of high-altitude cable Download PDFInfo
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- CN111668790B CN111668790B CN202010561667.4A CN202010561667A CN111668790B CN 111668790 B CN111668790 B CN 111668790B CN 202010561667 A CN202010561667 A CN 202010561667A CN 111668790 B CN111668790 B CN 111668790B
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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
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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
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- Suspension Of Electric Lines Or Cables (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a cable spacer for assisting in slowing down the vibration of a high-altitude cable, which comprises a support body with at least two support arms and a clamping body arranged at the tail ends of the support arms of the support body and used for clamping the cable; the support arms of the support body are of telescopic structures and comprise sleeves and telescopic rods which are sleeved in the sleeves in a sealing and sliding mode; a piston is arranged at the end part of the telescopic rod sleeved in the sleeve; the piston divides the sleeve into a front cavity close to the center of the support body and a rear cavity far away from the center of the support body; the piston is provided with a plurality of through holes for communicating the front cavity with the rear cavity; the spacer has controllable damping of three dimensions of rotation, extension and torsion, can absorb the vibration of the cable in all directions, and can adapt to and relieve the vibration modes of various cables such as high-frequency micro-amplitude breeze vibration, medium-frequency medium-amplitude sub-span vibration, low-frequency large-amplitude waving and the like.
Description
Technical Field
The invention belongs to the technical field of cable maintenance, and particularly relates to a cable spacer for assisting in slowing down vibration of a high-altitude cable.
Background
The high-altitude cable bears the important role of long-distance power transmission, is a blood vessel for economic development, industrial production and resident electricity consumption, is not lost, has the main position characteristics, is mostly positioned in remote and open areas or mountainous areas, has higher position, and can be attacked by various severe weathers in the process, particularly cable vibration caused by external wind power or ice coating and the like. Cable vibration refers to the periodic movement of the wire. The vibration of the wire can be roughly divided into 3 types according to the difference of frequency and amplitude: high-frequency micro-amplitude breeze vibration, medium-frequency medium-amplitude sub-span vibration and low-frequency large-amplitude waving. The 3 kinds of vibration can cause damage to the conducting wire and the power transmission line.
The spacer is a fitting which is installed on the split conductors and fixes the space between the split conductors to prevent the conductors from mutually whipping and to suppress the breeze vibration and the sub-span oscillation. And one strand of the spacing rods is arranged in the middle of the span and is arranged at intervals of 50-60 m. The split conductor is installed on the spacer, and compared with the vibration amplitude without the spacer, the vibration amplitude of the split conductor is reduced by 50%, and the vibration amplitude of the split conductor is reduced by 87% and 90%.
The main requirements for the spacer are that the clamp must have sufficient grip and must not loosen over long periods of operation, and that the overall strength must be able to withstand the centripetal force of the individual split conductors in the event of a short circuit and fatigue under long-term vibration. The spacer can be divided into two categories of damping and rigidity from the use performance, the wear-resistant rubber pad is embedded in the movable part of the damping spacer, and the damping of the rubber pad is utilized to consume the vibration energy of the lead, so that the damping effect is generated on the vibration of the lead. Without such rubber pads, rigid spacers are generally used in areas that are not susceptible to vibration or in jumper spacers due to poor vibration damping properties.
The existing damping type spacer uses rubber as a damping material at a movable joint of the spacer to consume the vibration energy of a lead, but in an outdoor severe environment, the rubber is easy to age, the spacer needs to be replaced at regular time, and the cost is high for a long time; the rubber with large damping coefficient has small effect under the condition that the wind power is small and the cable generates breeze vibration. The most suitable damping coefficient is difficult to adjust according to the difference of wind power and the difference of cable vibration, and particularly the existing spacing rod has small galloping effect on the cable.
Disclosure of Invention
The invention aims to: the utility model provides a supplementary cable conductor spacer that slows down high altitude cable vibration utilizes the structural feature of cable conductor spacer itself, utilizes the electric energy that high tension transmission line carried, and the viscosity of current variant in each support arm is controlled to the contactless acquisition a small amount of energy to adjust the damping coefficient of each support arm of conductor spacer respectively, and this conductor spacer has the controllable damping of gyration, flexible, twist reverse three dimension, can absorb the vibration of cable in all directions, adapts to different outside wind power environment and cable vibration form.
The technical scheme adopted by the invention is as follows:
the cable spacer for assisting in damping the vibration of the high-altitude cable comprises a supporting body with at least two supporting arms and a clamping body arranged at the tail ends of the supporting arms of the supporting body and used for clamping the cable; the support arms of the support body are of telescopic structures and comprise sleeves and telescopic rods which are sleeved in the sleeves in a sealing and sliding mode; a piston is arranged at the end part of the telescopic rod sleeved in the sleeve; the piston divides the sleeve into a front cavity close to the center of the support body and a rear cavity far away from the center of the support body; the piston is provided with a plurality of through holes for communicating the front cavity with the rear cavity; the front cavity and the rear cavity are filled with liquid electrorheological fluids; the liquid or colloidal electrorheological fluid can be communicated between the front cavity and the rear cavity through the through hole; a plurality of rectangular blades are radially and outwardly extended on the telescopic rod; the page plate is positioned in the rear cavity and close to the piston; the clamping body of the telescopic rod comprises a structure body, and an inductance mechanism for obtaining induced current by using an induced magnetic field of a high-altitude cable is integrated in the structure body; the inductance mechanism supplies power to the current transformer.
The inductance mechanism supplies power to the current variant through a power supply circuit, and an on-off switch of the power supply circuit is a trigger switch or a remote control switch; the power supply circuit at least comprises a current size adjusting part; the voltage magnitude and time of the trigger switch or the remote control switch and the power supply circuit are controlled by a controller.
Wherein, the trigger switch is triggered to be closed by a sensor; the sensor comprises a plurality of piezoelectric ceramic plates adhered or bound on the surface of the high-altitude cable; the piezoelectric ceramic pieces deform along with the overhead cable, current is generated through the piezoelectric effect, and when the current generated by any piezoelectric ceramic piece exceeds a preset threshold value, the trigger switch is closed.
Preferably, the inductance mechanism comprises an elongated spiral coil; the spiral coil is wound outside the overhead cable along the outer circumference of the overhead cable, so that a plane formed by any single coil body of the spiral coil is approximately towards the tangential direction of the overhead cable; the spiral coil and the power supply circuit form a closed loop.
Preferably, the inductance mechanism comprises a plurality of disconnected annular conductors which are arranged outside the overhead cable and arranged along the outer circumference of the overhead cable; the plane formed by any annular conductor is approximately directed to the tangential direction of the overhead cable; the conductors are sequentially connected in series and then form a closed loop with the power supply circuit.
Wherein, the power supply circuit comprises or is contained in an alternating current booster circuit; the plurality of power supply circuits share one AC booster circuit.
Wherein, the power supply circuit also comprises a small-sized storage battery for charging; the small storage battery supplies power for the timing trigger switch and/or the remote control switch.
The clamping body comprises two detachable and combined split bodies so as to detachably clamp the high-altitude cable.
Wherein, for the support arm of any support body, the sleeve is wholly positioned at the oblique lower part of the telescopic rod.
Wherein, the cable spacer is a rotary spacer.
The invention has the following beneficial effects:
1. the invention utilizes the structural characteristics of the cable spacer, utilizes the electric energy transmitted by the high-voltage transmission line to acquire a small amount of energy in a non-contact manner to control the viscosity of the current variant in each support arm, thereby respectively adjusting the damping coefficient of each support arm of the spacer, and the spacer has controllable damping with three dimensions of rotation, expansion and torsion, can absorb the vibration of the cable in each direction, and can adapt to and relieve the vibration modes of various cables, such as high-frequency micro-amplitude breeze vibration, medium-frequency middle-amplitude sub-span vibration, low-frequency large-amplitude waving and the like.
2. The invention utilizes the electromagnetic induction phenomenon, because most of high-altitude cables are alternating current, the changing current generates a changing magnetic field, and the magnetic lines of force are a group of concentric circles with constantly changing directions and taking the cables as the centers according to the right-hand spiral rule; with the conductor in the changing magnetic flux, an electromotive force is generated. The electromotive force is called induced electromotive force or induced electromotive force, the conductor is closed to form a loop, the electromotive force drives electrons to flow to form the principle of induced current, a small amount of energy is obtained from the cable in an isolated mode, the voltage is increased through the booster circuit, and then the viscosity of the electrorheological fluid is changed, so that the purpose of the invention is achieved; due to the adoption of the electromagnetic induction principle, the opening and closing of the whole system can be realized only by controlling the closing state of the conductor, namely the opening or closing of the control circuit, the required energy is extremely small, so that the function can be realized only by a miniature storage battery, and in addition, the storage battery is charged by utilizing the current generated by electromagnetic induction, so that the storage battery only needs to be opened or closed once or twice by controlling the circuit; the whole system does not need external power supply or charging, can achieve the effect of safety and no matter what effect, and has extremely low requirements on manpower and subsequent maintenance and support; and because the external wind power environment is similar in a small range, the vibration form of the cable is also similar, so the damping regulation and control can be synchronously opened and closed, the transformer and the like required by the booster circuit and the remote control device of the switch and the like can share one cable spacer, on one hand, the cost is greatly saved, on the other hand, the cable spacer can be uniformly installed on a cable tower, the maintenance and the installation can be better, and the volume and the weight of the cable spacer can not be increased.
3. The inductance mechanism of the invention adopts the form of a spiral coil or a plurality of serially connected annular conductors, utilizes the structural characteristic that the end parts of the universal cable spacers clamp the cable, effectively realizes the space-isolated acquisition, conversion and conduction of energy, and skillfully solves the effect which is required to be achieved by the invention.
4. The invention can seamlessly switch voltages with different magnitudes by changing the voltage mode to obtain the spacer with different damping coefficients, has extremely high regulation and control speed, reversibility and controllable damping with three dimensions of rotation, extension and torsion, can absorb the vibration of a cable in each direction, is suitable for different external wind environments and cable vibration forms, becomes an excellent platform, has infinite possibility, can provide a test basis for the follow-up research of the relationship between the cable vibration and the external environment, analyzes the optimal damping coefficient change of different spacers under different conditions, achieves a more optimal anti-vibration effect, and can be immediately put into use, only parameters are input through a controller, and hardware is not required to be replaced by huge manpower and material resources.
5. The inverse piezoelectric vibration mechanism and the inductance mechanism are matched with a split structure commonly existing in a spacer clamping body, so that the installation and the replacement are convenient.
Drawings
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is a schematic view of the structure of the telescopic rod and the sleeve of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 1 with a helical coil;
FIG. 4 is a schematic axial cross-sectional view of a cable with a clamping body using a helical coil;
FIG. 5 is a cross-sectional view A-A of FIG. 1 with a loop conductor;
fig. 6 is a schematic axial cross-sectional view of a cable with a clamping body when using a ring conductor.
The labels in the figure are:
1-support body, 11-sleeve, 12-telescopic rod, 13-piston, 14-front cavity, 15-current variant, 16-through hole, 17-rear cavity, 18-blade, 2-clamping body, 31-piezoelectric ceramic plate, 41-spiral coil, 42-annular conductor, 5-structural body, 51-installation cavity, 52-separation block and 6-overhead cable.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 6, the cable spacer for assisting in damping the vibration of an overhead cable comprises a support body 1 having at least two support arms and a clamping body 2 arranged at the tail end of the support arm of the support body 1 for clamping the cable; the support arms of the support body 1 are of telescopic structures and comprise a sleeve 11 and a telescopic rod 12 which is sleeved in the sleeve 11 in a sealing and sliding manner; a piston 13 is arranged at the end part of the telescopic rod 12 sleeved in the sleeve 11; the piston 13 divides the sleeve 11 into a front cavity 14 close to the center of the supporting body 1 and a rear cavity 17 far away from the center of the supporting body 1; the piston 13 is provided with a plurality of through holes 16 which are communicated with the front cavity 14 and the rear cavity 17; the front cavity 14 and the rear cavity 17 are filled with liquid electrorheological fluid 15; the liquid or colloidal electrorheological fluid 15 can circulate between the front cavity 14 and the back cavity 17 through the through hole 16; a plurality of rectangular blades 18 are extended on the telescopic rod 12 along the radial direction; the leaf 18 is located in the rear cavity 17 and close to the piston 13; the clamping body 2 of the telescopic rod 12 comprises a structural body 5, and an inductance mechanism for obtaining induced current by using an induced magnetic field of the overhead cable 6 is integrated in the structural body 5; the inductive means supply the current transformer 15.
Furthermore, the inductance mechanism supplies power to the inverse piezoelectric vibration mechanism through a power supply circuit, and an on-off switch of the power supply circuit is a trigger switch and/or a remote control switch; if a trigger switch is used, preferably a current type control switch is adopted, a piezoelectric ceramic piece 31 can be adhered or bound on the overhead cable 6, the piezoelectric ceramic piece 31 bends along with the swing of the overhead cable 6, a current is generated by utilizing a piezoelectric effect, and when the current is greater than a preset threshold value, the current type control switch is triggered to be closed, so that the inductance mechanism is started, and an induction current is generated.
For the inductance mechanism, the invention provides two preferable embodiments:
the first implementation mode comprises the following steps:
referring to fig. 3 and 4, the inductance mechanism includes an elongated spiral coil 41; the spiral coil 41 is wound along the outer circumference of the aerial cable 6 outside the aerial cable 6, so that the plane formed by any single coil body of the spiral coil 41 is approximately directed to the tangential direction of the aerial cable 6; the spiral coil 41 and the power supply circuit form a closed loop. The structure 5 comprises two hollow semi-annular parts, wherein the hollow parts form a semi-annular placing cavity 51; the spiral coil 41 is placed at the bottom of the housing chamber 51, and a semi-annular partition block 52 having a vertical section of a "concave" shape is inserted into the housing chamber 51, with the outer side abutting against the inner end of the housing chamber 51, and the inner side contacting the surface of the overhead cable 6.
The second embodiment:
referring to fig. 5 and 6, the inductance mechanism includes a plurality of broken loop conductors 42 arranged along the outer circumference of the overhead cable 6, disposed outside the overhead cable 6; the plane formed by any one of the annular conductors 42 is substantially directed towards the tangent of the aerial cable 6; the conductors 42 are sequentially connected in series to form a closed loop with the power supply circuit, the purpose of the series connection is that the currents in the series circuit are equal everywhere, induced currents can be effectively stabilized, and then the magnetic flux effects of the plurality of annular conductors 42 can form a whole, so that the inductance efficiency is improved. The structure 5 comprises two hollow semi-annular parts, wherein the hollow parts form a semi-annular placing cavity 51; the spiral coil 41 is placed at the bottom of the housing chamber 51, and a semi-annular partition block 52 having a vertical section of a "concave" shape is inserted into the housing chamber 51, the outer side of which abuts against the inner end of the housing chamber 51, and the inner side of which is in surface contact with the overhead cable 6, wherein the annular conductor 42 is located in the housing chamber 51 and is inserted on the partition block 52.
Further, the power supply circuit comprises or is contained in an alternating current booster circuit; the power supply circuits share an alternating current booster circuit, the alternating current booster circuit is mature technology, and the power supply circuit also charges a small storage battery; the small storage battery supplies power for the trigger switch and/or the remote control switch. Because the telescopic capacity of the cable spacers can be adjusted to be synchronously opened and closed, a remote control device, a signal receiving device, a storage battery and the like of the switch can share one cable spacer, a transformer used by the booster circuit can be provided with a plurality of secondary coils, so that the transformer has the capacity of a plurality of preset voltage variable values, the absolute value of the transmission current of the overhead cable 6 is generally unchanged, the preset voltage variable values have stability, and the controller selects different voltage variable values to supply current variable bodies 15 on different support arms according to a preset program, so that the current variable bodies 15 are respectively controlled. The transformer and the controller may also share one of a plurality of spacers. On one hand, the cost is greatly saved, and on the other hand, the cable spacer can be uniformly arranged on a cable tower frame, so that the cable spacer can be maintained and arranged better, and the volume and the weight of the cable spacer cannot be increased; the invention also has simplified version, and the output voltage of the transformer is a fixed value, the controller only controls the power on and off of the current variant 15 of each support arm respectively, at this time, the viscosity of the current variant 15 is only two, and the liquid in the initial state and the viscous state or solid state when applying the electric field, the swing amplitude increase phenomenon caused by the synchronous swing of each cable is destroyed by controlling the repeated power on and off and the power on and off time of different support arms respectively, even the swing time difference of each cable is controlled to form the swing sequence or even the opposite, because the acting force relation of the spacing arms is arranged between each high-altitude cable 6, the high-altitude cables 6 mutually restrict the swing or counteract the swing to weaken the swing amplitude of each cable.
Furthermore, for the arm of any support body 1, the sleeve 11 is located obliquely below the telescopic rod 12, and although the sleeve 11 is sealed, the arrangement can effectively prevent the electrorheological body 15 in the front cavity 14 from leaking in a liquid state in case of sealing problem.
Furthermore, a wind power monitoring device can be arranged on the tower frame to monitor the wind power in real time and transmit data to the controller, the bending amount of the cable detected by the piezoelectric ceramic piece 31 is compared with a preset threshold value, and the controller automatically selects a preset adjusting scheme to adjust the viscosity of the current variant in each support arm according to the comparison result.
Furthermore, a signal receiving device can be arranged on the tower and used for receiving a remote instruction, and the remote control switch controls the power supply circuit to be switched on and off according to the instruction.
The working principle of the invention is as follows:
through weather forecast early warning, wind power real-time data obtained by a wind power monitoring device is transmitted to a controller, and current generated by deformation of the piezoelectric ceramic piece 31 is transmitted to the controller; the controller combines the data of the wind power monitoring device and the piezoelectric ceramic piece 31, compares the data with a preset threshold value, automatically selects a preset adjusting scheme according to the comparison result, firstly closes the power supply circuit, then selects different voltage variable values to supply current variants in each support arm, and adjusts the viscosity of the current variants; or the control center sends the instruction remotely, and after the signal receiving device receives the instruction, the remote control switch is closed, and the inductance mechanism forms a closed conductive loop; because the high-altitude cable 6 is alternating current, the changing current generates a changing magnetic field, and the magnetic lines of force are a group of concentric circles with constantly changing directions and taking the cable as the center according to the right-hand spiral rule; with the conductor in the changing magnetic flux, an electromotive force is generated. The electromotive force is called induced electromotive force or induced electromotive force, the conductor is closed to form a loop, the electromotive force can drive electrons to flow, the principle of induced current is formed, a small amount of energy is obtained from the high-altitude cable 6 in an isolated mode, the viscosity of a current variant is adjusted after the voltage is increased through the booster circuit, at the moment, the spacer has controllable damping with three dimensions of rotation, stretching and torsion, the stretching and torsion damping can be flexibly adjusted, the vibration of the cable can be absorbed in all directions, and the vibration mode of various cables such as high-frequency micro-amplitude breeze vibration, medium-frequency medium-amplitude secondary pitch vibration and low-frequency large-amplitude waving can be adapted and relieved. In the process, the power supply circuit supplies power to the current variant and also charges the storage battery; after the vibration stops or is weakened to a preset threshold value, the switch is disconnected in a remote control mode or a controller automatic control mode, the inductance mechanism cannot form a closed conductive loop, energy cannot be obtained from the high-altitude cable 6, and the system enters a silent stage.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. Supplementary cable conductor spacer that slows down high altitude cable vibration, its characterized in that: comprises a supporting body (1) with at least two supporting arms and a clamping body (2) which is arranged at the tail end of the supporting arm of the supporting body (1) and clamps a cable; the support arm of the support body (1) is of a telescopic structure and comprises a sleeve (11) and a telescopic rod (12) which is sleeved in the sleeve (11) in a sealing and sliding manner; a piston (13) is arranged at the end part of the telescopic rod (12) sleeved in the sleeve (11); the piston (13) divides the sleeve (11) into a front cavity (14) close to the center of the support body (1) and a rear cavity (17) far away from the center of the support body (1); a plurality of through holes (16) which are communicated with the front cavity (14) and the rear cavity (17) are formed in the piston (13); the front cavity (14) and the rear cavity (17) are filled with liquid electrorheological fluid (15); the liquid or colloidal electrorheological fluid (15) can be communicated between the front cavity (14) and the rear cavity (17) through the through hole (16); a plurality of rectangular blades (18) are extended and divergently outwards along the radial direction of the telescopic rod (12); the flap (18) is located in the rear cavity (17) and close to the piston (13); the clamping body (2) comprises a structural body (5), and an inductance mechanism for obtaining induction current by using an induction magnetic field of the overhead cable (6) is integrated in the structural body (5); the inductance mechanism supplies power to the current variant (15); the inductance mechanism supplies power to the current variant (15) through a power supply circuit, and an on-off switch of the power supply circuit is a trigger switch or a remote control switch; the power supply circuit at least comprises a voltage size adjusting part; the voltage and time of the trigger switch or the remote control switch and the power supply circuit are controlled by a controller; the trigger switch is triggered to be closed by a sensor; the sensor comprises a plurality of piezoelectric ceramic plates (31) adhered or bound on the surface of the high-altitude cable (6); the piezoelectric ceramic pieces (31) deform along with the overhead cable (6) and generate current through a piezoelectric effect, and the current generated by any piezoelectric ceramic piece enables the trigger switch to be closed when the current exceeds a preset threshold value.
2. The cable spacer for aiding in damping vibration of overhead cables of claim 1 wherein: the inductance mechanism comprises an elongated spiral coil (41); the spiral coil (41) is wound outside the overhead cable (6) along the outer circumference of the overhead cable (6), so that the plane formed by any single coil body of the spiral coil (41) is approximately towards the tangential direction of the overhead cable (6); the spiral coil (41) and the power supply circuit form a closed loop.
3. The cable spacer for aiding in damping vibration of overhead cables of claim 1 wherein: the inductance mechanism comprises a plurality of disconnected annular conductors (42) which are arranged outside the high-altitude cable (6) and are arranged along the outer circumference of the high-altitude cable (6); the plane formed by any annular conductor (42) is approximately towards the tangential direction of the aerial cable (6); the conductors (42) are sequentially connected in series and then form a closed loop with the power supply circuit.
4. The cable spacer for aiding in damping vibration of overhead cables of claim 1 wherein: the power supply circuit comprises or is contained in an alternating current booster circuit; the plurality of power supply circuits share one AC booster circuit.
5. The cable spacer for aiding in damping vibration of overhead cables of claim 4 wherein: the power supply circuit also comprises a small storage battery for charging; the small storage battery supplies power for the timing trigger switch and/or the remote control switch.
6. The cable spacer for aiding in damping vibration of overhead cables of any one of claims 1 to 5 wherein: the clamping body (2) comprises two detachable and combined split bodies so as to detachably clamp the overhead cable (6).
7. The cable spacer for aiding in damping vibration of overhead cables of any one of claims 1 to 5 wherein: for the support arm of any support body (1), the sleeve (11) is wholly positioned obliquely below the telescopic rod (12).
8. The cable spacer for aiding in damping vibration of overhead cables of any one of claims 1 to 5 wherein: the cable spacer is a rotary spacer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010561667.4A CN111668790B (en) | 2020-06-18 | 2020-06-18 | Cable spacer for assisting in slowing down vibration of high-altitude cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010561667.4A CN111668790B (en) | 2020-06-18 | 2020-06-18 | Cable spacer for assisting in slowing down vibration of high-altitude cable |
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| CN111668790A CN111668790A (en) | 2020-09-15 |
| CN111668790B true CN111668790B (en) | 2021-04-16 |
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| CN114640075B (en) * | 2020-12-16 | 2024-05-03 | 中国石油化工股份有限公司 | High-voltage conductor anti-galloping spacer and mounting method thereof |
| CN112636286B (en) * | 2020-12-31 | 2022-03-08 | 中网电力科技有限公司 | Prevent insulating strain clamp tied in a bundle of deformation |
| CN113394733B (en) * | 2021-06-24 | 2023-03-28 | 重庆科技学院 | Self-adaptive damping spacer |
| CN114069530B (en) * | 2021-11-16 | 2024-03-19 | 广东电网有限责任公司 | Double-split type spacing rod |
| CN115021190B (en) * | 2022-06-15 | 2024-04-12 | 广东电网有限责任公司 | Transmission line control system |
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| CN208862535U (en) * | 2018-09-25 | 2019-05-14 | 西安工程大学 | A kind of conducting wire anti-dance intelligent link fitting based on magnetic damping |
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| CN109826905B (en) * | 2019-04-03 | 2023-11-03 | 吉林大学 | Energy feedback type damping self-control vibration damper |
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| JP2005261030A (en) * | 2004-03-10 | 2005-09-22 | Asahi Electric Works Ltd | Loose spacer for multiple conductors, phase spacer, method of mounting phase spacer, and jumper structure of multiple conductor transmission line |
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| CN110380375A (en) * | 2019-08-12 | 2019-10-25 | 山东大学 | A kind of triggering type piezoelectric ceramics energy consumption conductor spacer |
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