CN111682484A - Damping spring spacing rod for vibration damping and anti-galloping - Google Patents
Damping spring spacing rod for vibration damping and anti-galloping Download PDFInfo
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- CN111682484A CN111682484A CN202010417851.1A CN202010417851A CN111682484A CN 111682484 A CN111682484 A CN 111682484A CN 202010417851 A CN202010417851 A CN 202010417851A CN 111682484 A CN111682484 A CN 111682484A
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- damping
- fixedly connected
- galloping
- vibration
- spacing
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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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Abstract
The invention discloses a vibration-damping anti-galloping damping spring spacer, which comprises a spacing insulator and spacing positioning rods, wherein the spacing positioning rods are respectively and fixedly connected to two ends of the spacing insulator; the spacing positioning rod is fixedly connected with the end part of the spacing insulator through a vibration-damping anti-galloping assembly. The invention can effectively reduce the probability of the transmission line galloping accidents, further avoid the accidents of line breakage, tripping, tower collapse and the like caused by galloping of the transmission line, finally reduce the influence of galloping of the transmission line on a power grid and improve the reliability and the safety of the operation of the transmission line.
Description
Technical Field
The invention relates to a vibration-damping anti-galloping damping spring spacer, and belongs to the technical field of anti-vibration hardware fittings of power transmission lines.
Background
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 types of the spacers are classified into damping type spacers and non-damping type spacers. The damping type spacer is characterized in that: rubber is used as damping material at the movable joint of the spacer to consume the vibration energy of the lead and generate damping effect on the vibration of the lead. Therefore, the spacer is suitable for various regions. However, in view of the economical efficiency of power transmission lines, this type of spacer is focused on lines for areas where the wires are susceptible to vibration. The non-damping spacer has poor shock absorption, and can be applied to lines in areas difficult to generate vibration or used as jumper spacers.
Along with frequent galloping accidents of the power transmission line, a commonly used anti-galloping device is a spacer. After the conventional anti-galloping spacer is used for a period of time, phenomena such as deformation and bending of the phase-to-phase spacer exist, and analysis shows that the phenomena are caused by the fact that the common phase-to-phase spacer cannot self-adjust dynamic load. In addition, the common interphase spacer usually neglects the flexibility of the rotation of the end connecting hardware, so that the axial rotation difficulty is easily caused, the uneven ice coating of the lead is caused, and the waving prevention effect is further weakened.
Therefore, how to reduce the experimental cost of the lightning arrester and avoid the problem that the misjudgment of the state of the lightning arrester caused by overlarge test error of the leakage current is in urgent need of solution.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a vibration-damping anti-galloping damping spring spacer, and the conventional interphase spacer is designed and improved, so that the interphase spacer plays an all-round anti-galloping role, and the purpose of joint anti-galloping of sub-conductors, phase conductors and hardware connecting parts is achieved.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a vibration-damping anti-galloping damping spring spacer comprises a spacing insulator and spacing positioning rods which are fixedly connected to two ends of the spacing insulator respectively; the spacing positioning rod is fixedly connected with the end part of the spacing insulator through a vibration-damping anti-galloping assembly.
As a further improvement of the invention, the spacing positioning rod comprises a spacing rod core, two insulating stop blocks fixedly connected to the spacing rod core, and a spacing rod insulating layer fixedly sleeved on the spacing rod core outside the insulating stop blocks;
and two ends of the spacing rod core are respectively and fixedly connected with a fixing ring.
As an embodiment of the present invention, both ends of the spacer insulator are fixedly connected with a threaded connection sleeve for fixedly connecting the vibration damping and anti-galloping assembly.
As a further improvement of the invention, the vibration-damping and anti-galloping assembly comprises an inclined connecting piece with one end fixedly connected to a spacing rod core positioned between two insulation blocks, and an adjusting connecting plate hinged to the other end of the inclined connecting piece through a hinge shaft.
As a further improvement of the invention, the free end of the adjusting connecting plate is fixedly provided with an external thread matched with the internal thread of the threaded connecting sleeve, and the free end of the adjusting connecting plate is connected in the threaded connecting sleeve in a threaded manner.
As a further improvement of the invention, the inclined angle of the inclined connecting piece and the horizontal plane is 45 degrees.
As another embodiment of the present invention, the vibration damping and anti-galloping assembly includes a straight link having one end fixedly connected to the spacer rod core between the two insulation stoppers, a first fixing plate fixedly connected to an end of the straight link, a damping spring member having one end fixedly connected to the first fixing plate, and a second fixing plate fixedly connected to the other end of the damping spring member.
As another embodiment of the present invention, the vibration damping and anti-galloping assembly includes an inclined link having one end fixedly connected to the spacer rod core between the two insulation stoppers, an adjustment link plate hinged to the other end of the inclined link through a hinge shaft, a first fixing plate fixedly connected to an end of the adjustment link plate, a damping spring member having one end fixedly connected to the first fixing plate, and a second fixing plate fixedly connected to the other end of the damping spring member.
As a further improvement of the invention, a threaded column is fixedly connected to the second fixing plate;
the threaded column is in threaded connection in the threaded connection sleeve.
As a further improvement of the invention, the insulating stopper and the insulating layer of the spacer are made of insulating rubber.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the invention provides a vibration-damping anti-galloping damping interphase spacer, aiming at the problems of bending, deformation and the like when a common interphase spacer is adopted in later anti-galloping reconstruction. The interphase spacer can effectively reduce the probability of galloping accidents of the power transmission line, further avoid accidents of disconnection, tripping, tower collapse and the like of the power transmission line caused by galloping, finally reduce the influence of galloping of the power transmission line on a power grid, and improve the reliability and safety of operation of the power transmission line.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a vibration damping and anti-galloping assembly according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a vibration damping and anti-galloping assembly according to a second embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a third vibration-damping and anti-galloping assembly according to an embodiment of the invention;
FIG. 6 is a schematic structural diagram of a third embodiment of the present invention;
FIG. 7 is a graph of displacement time course of the normal phase-to-phase spacers of the present invention in a direction perpendicular to the midpoint of the conductive wire of the third embodiment;
fig. 8 is a graph of displacement time course of the horizontal direction of the middle point of the conducting wire of the third embodiment and the common phase-to-phase spacer of the invention.
Wherein:
the device comprises a 10-interval insulator, a 20-thread connecting sleeve, 11-interval rod insulating layer, 12-fixed ring, 13-insulation stop block, 14-interval rod core, 21-inclined connecting piece, 22-hinged shaft, 23-adjustment connecting plate, 31-straight connecting rod, 32-first fixing plate, 33-second fixing plate, 34-damping spring part and 35-thread column.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
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 example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting.
Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Example one
As shown in figures 1 and 2 of the drawings,
a vibration-damping anti-oscillation damping spring spacer comprises a spacing insulator 10 and spacing positioning rods which are respectively and fixedly connected to two ends of the spacing insulator 10; the spacing positioning rod is fixedly connected with the end part of the spacing insulator 10 through a vibration-damping anti-galloping assembly.
Further, the spacing positioning rod comprises a spacing rod core 14, two insulating stoppers 13 fixedly connected to the spacing rod core 14, and a spacing rod insulating layer 11 fixedly sleeved on the spacing rod core 14 outside the insulating stoppers 13;
the two ends of the spacing rod core 14 are respectively fixedly connected with a fixing ring 12.
Further, both ends of the spacer insulator 10 are fixedly connected with a threaded connection sleeve 20 for fixedly connecting the vibration-damping and anti-galloping assembly.
Further, the vibration-damping anti-galloping assembly comprises an inclined link 21 having one end fixedly connected to the spacer rod core 14 between the two insulation blocks 13, and an adjusting link plate 23 hinged to the other end of the inclined link 21 through a hinge shaft 22.
Furthermore, the free end of the adjusting connecting plate 23 is fixedly provided with an external thread matched with the internal thread of the threaded connecting sleeve 20, and the free end of the adjusting connecting plate 23 is connected in the threaded connecting sleeve 20 in a threaded manner.
Furthermore, the inclined angle between the inclined connecting piece 21 and the horizontal plane is 45 degrees, and the 45-degree inclined connecting piece 21 has the effect of inhibiting the torsional waving.
Furthermore, the insulating stopper 13 and the spacer insulating layer 11 are made of insulating rubber.
Example two
As shown in figures 3 and 4 of the drawings,
a vibration-damping anti-oscillation damping spring spacer comprises a spacing insulator 10 and spacing positioning rods which are respectively and fixedly connected to two ends of the spacing insulator 10; the spacing positioning rod is fixedly connected with the end part of the spacing insulator 10 through a vibration-damping anti-galloping assembly.
Further, the spacing positioning rod comprises a spacing rod core 14, two insulating stoppers 13 fixedly connected to the spacing rod core 14, and a spacing rod insulating layer 11 fixedly sleeved on the spacing rod core 14 outside the insulating stoppers 13;
the two ends of the spacing rod core 14 are respectively fixedly connected with a fixing ring 12.
Further, both ends of the spacer insulator 10 are fixedly connected with a threaded connection sleeve 20 for fixedly connecting the vibration-damping and anti-galloping assembly.
Further, the vibration-damping and anti-galloping assembly comprises a straight connecting rod 31 with one end fixedly connected to the spacing rod core 14 between the two insulating stoppers 13, a first fixing plate 32 fixedly connected to the end part of the straight connecting rod 31, a damping spring part 34 with one end fixedly connected to the first fixing plate 32, and a second fixing plate 34 fixedly connected to the other end of the damping spring part 34.
The damping spring member 34 has certain energy-absorbing and vibration-damping characteristics, and can also effectively reduce the amplitude caused by breeze vibration.
Further, a threaded column 35 is fixedly connected to the second fixing plate 34;
the threaded column 35 is screwed into the threaded connection sleeve 20.
Furthermore, the insulating stopper 13 and the spacer insulating layer 11 are made of insulating rubber.
EXAMPLE III
As shown in figures 5 and 6 of the drawings,
a vibration-damping anti-oscillation damping spring spacer comprises a spacing insulator 10 and spacing positioning rods which are respectively and fixedly connected to two ends of the spacing insulator 10; the spacing positioning rod is fixedly connected with the end part of the spacing insulator 10 through a vibration-damping anti-galloping assembly.
Further, the spacing positioning rod comprises a spacing rod core 14, two insulating stoppers 13 fixedly connected to the spacing rod core 14, and a spacing rod insulating layer 11 fixedly sleeved on the spacing rod core 14 outside the insulating stoppers 13;
the two ends of the spacing rod core 14 are respectively fixedly connected with a fixing ring 12.
Further, both ends of the spacer insulator 10 are fixedly connected with a threaded connection sleeve 20 for fixedly connecting the vibration-damping and anti-galloping assembly.
Further, the vibration-damping anti-galloping assembly comprises an oblique connecting piece 21 with one end fixedly connected to the spacing rod core 14 between the two insulation stoppers 13, an adjusting connecting plate 23 hinged to the other end of the oblique connecting piece 21 through a hinge shaft 22, a first fixing plate 32 fixedly connected to the end of the adjusting connecting plate 23, a damping spring part 34 with one end fixedly connected to the first fixing plate 32, and a second fixing plate 34 fixedly connected to the other end of the damping spring part 34.
Further, the inclined angle between the inclined connecting piece 21 and the horizontal plane is 45 degrees.
In the embodiment, the damping spring part 34 has certain energy absorption and vibration reduction characteristics, the amplitude caused by breeze vibration can be effectively reduced, and the 45-degree inclined connecting part 21 also has the effect of inhibiting torsional galloping, so that the spring vibration reduction device and the 45-degree inclined connecting part are combined to achieve the combined anti-galloping effect, and the operation safety and the reliability of the power transmission line are greatly improved.
Further, a threaded column 35 is fixedly connected to the second fixing plate 34;
the threaded column 35 is screwed into the threaded connection sleeve 20.
Furthermore, the insulating stopper 13 and the spacer insulating layer 11 are made of insulating rubber.
And simulating the actual running state of the lead through a lead fatigue vibration test system, and analyzing the anti-galloping performance of the third embodiment. Because the conductor galloping displacement of the power transmission line is large, the galloping hazard degree can be judged by observing the displacement in the galloping vertical direction and the horizontal direction, and then the galloping resistance of the vibration-damping anti-galloping damping spring interphase spacer is judged.
The method is characterized in that the conductor galloping is simulated by using single-point restart analysis in ANSYS for reference, a result is extracted once in each calculation step, the conductor is reloaded after the aerodynamic load of the conductor at the moment is calculated, and the step is repeated for many times until the conductor is in a stable state. After the loading is finished, displacement values of the middle point of the wire in the vertical direction and the horizontal direction after the transient stability are extracted respectively, as shown in fig. 7 and 8.
According to simulation analysis, when the vibration-damping anti-galloping damping spring phase-to-phase spacer is installed, the displacement of the vertical direction and the horizontal direction of the amplitude of the wire is obviously reduced compared with that of the common phase-to-phase spacer, and the displacement of the wire in two directions is smaller when the vibration-damping anti-galloping damping spring phase-to-phase spacer is installed. Therefore, the vibration-damping anti-galloping damping spring phase-to-phase spacer is proved to be superior to the common phase-to-phase spacer in anti-galloping performance.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; it is obvious as a person skilled in the art to combine several aspects of the invention. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A vibration-damping anti-galloping damping spring spacer comprises a spacing insulator (10) and spacing positioning rods which are respectively and fixedly connected to two ends of the spacing insulator (10); the method is characterized in that: the spacing positioning rod is fixedly connected with the end part of the spacing insulator (10) through a vibration-damping anti-galloping assembly.
2. The spacer for vibration-damping anti-oscillation damping spring as claimed in claim 1, wherein: the spacing positioning rod comprises a spacing rod core (14), two insulating stoppers (13) fixedly connected to the spacing rod core (14), and a spacing rod insulating layer (11) fixedly sleeved on the spacing rod core (14) outside the insulating stoppers (13);
two ends of the spacing rod core (14) are respectively and fixedly connected with a fixing ring (12).
3. The spacer for vibration-damping anti-oscillation damping spring as claimed in claim 2, wherein: and the two ends of the spacing insulator (10) are fixedly connected with threaded connecting sleeves (20) which are used for fixedly connecting the vibration-damping and anti-galloping components.
4. A vibration-damping anti-galloping damping spring spacer according to claim 3, wherein: the vibration-damping and anti-galloping assembly comprises an oblique connecting piece (21) with one end fixedly connected to a spacing rod core (14) between two insulation stop blocks (13), and an adjusting connecting plate (23) hinged to the other end of the oblique connecting piece (21) through a hinge shaft (22).
5. The spacer for vibration-damping anti-oscillation damping spring as claimed in claim 4, wherein: the free end of the adjusting connecting plate (23) is fixedly provided with an external thread matched with the internal thread of the threaded connecting sleeve (20), and the free end of the adjusting connecting plate (23) is connected in the threaded connecting sleeve (20) in a threaded mode.
6. The spacer for vibration-damping anti-oscillation damping spring as claimed in claim 5, wherein: the inclined angle between the inclined connecting piece (21) and the horizontal plane is 45 degrees.
7. A vibration-damping anti-galloping damping spring spacer according to claim 3, wherein: the damping anti-galloping assembly comprises a straight connecting rod (31) with one end fixedly connected to a spacing rod core (14) between two insulating stop blocks (13), a first fixing plate (32) fixedly connected to the end of the straight connecting rod (31), a damping spring part (34) with one end fixedly connected to the first fixing plate (32), and a second fixing plate (33) fixedly connected to the other end of the damping spring part (34).
8. A vibration-damping anti-galloping damping spring spacer according to claim 3, wherein: the damping anti-galloping assembly comprises an oblique connecting piece (21) with one end fixedly connected to a spacing rod core (14) between two insulation stop blocks (13), an adjusting connecting plate (23) hinged to the other end of the oblique connecting piece (21) through a hinge shaft (22), a first fixing plate (32) fixedly connected to the end of the adjusting connecting plate (23), a damping spring piece (34) fixedly connected to the first fixing plate (32) with one end, and a second fixing plate (33) fixedly connected to the other end of the damping spring piece (34).
9. A shock absorbing anti-galloping damping spring spacer as claimed in claim 7 or 8, wherein: a threaded column (35) is fixedly connected to the second fixing plate (33);
the threaded column (35) is in threaded connection with the threaded connecting sleeve (20).
10. The spacer for vibration-damping anti-oscillation damping spring as claimed in claim 2, wherein: and the insulating stop block (13) and the spacer insulating layer (11) are made of insulating rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010417851.1A CN111682484A (en) | 2020-05-18 | 2020-05-18 | Damping spring spacing rod for vibration damping and anti-galloping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010417851.1A CN111682484A (en) | 2020-05-18 | 2020-05-18 | Damping spring spacing rod for vibration damping and anti-galloping |
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| Publication Number | Publication Date |
|---|---|
| CN111682484A true CN111682484A (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010417851.1A Pending CN111682484A (en) | 2020-05-18 | 2020-05-18 | Damping spring spacing rod for vibration damping and anti-galloping |
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| Country | Link |
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| CN (1) | CN111682484A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116388099A (en) * | 2023-02-27 | 2023-07-04 | 江东金具设备有限公司 | Pre-twisted anti-galloping insulating spacer |
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| CN209844499U (en) * | 2019-05-14 | 2019-12-24 | 卢洪刚 | 10-35KV line stabilizer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116388099A (en) * | 2023-02-27 | 2023-07-04 | 江东金具设备有限公司 | Pre-twisted anti-galloping insulating spacer |
| CN116388099B (en) * | 2023-02-27 | 2023-10-13 | 江东金具设备有限公司 | Pre-twisted anti-galloping insulating spacer |
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Application publication date: 20200918 |
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