Edge rotation measuring device for wire icing test and use method
By designing an edge rotation measuring device for conductor icing tests, the device simulates the torsion of the conductor during the icing process, solving the problem that existing devices ignore the conductor's rotational capacity. This achieves a good match between the test results and actual working conditions, providing more accurate icing research data.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 国网电力工程研究院有限公司
- Filing Date
- 2026-01-30
- Publication Date
- 2026-05-12
AI Technical Summary
Existing icing test equipment ignores the torsional degree of freedom of the conductor and treats the conductor as a fixed posture structure, which makes it difficult to truly reflect the icing evolution behavior of the conductor under conditions that allow for rotation, resulting in deviations between the test results and actual working conditions.
An edge rotation measuring device for conductor icing test was designed, including at least two spaced rotation test components. The first and second rotation test components simulate the torsion of the conductor during the icing process. The rotation of the conductor is achieved by using a resistance group and a rotating disk, and the rotation angle is measured by a laser displacement rangefinder.
This method enables a realistic simulation of conductor torsion within an icing wind tunnel, ensuring that the test results are consistent with actual working conditions. This facilitates in-depth research into the mechanism of conductor icing and provides more accurate test data.
Smart Images
Figure CN122016220A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of conductor testing technology, specifically to an edge rotation measuring device and its usage method for conductor icing testing. Background Technology
[0002] Overhead transmission lines operate in outdoor environments for extended periods, making them susceptible to the combined effects of severe weather conditions such as rain, snow, freezing, and strong winds. In particular, during rain, snow, and freezing weather, ice of varying shapes and thicknesses easily forms on the conductor surface. When this ice accumulation continues and reaches a certain level, it significantly increases the conductor's self-weight and wind load, potentially leading to conductor breakage due to heavy icing, ice shedding, and skipping, impacting the structural safety of the line. Furthermore, iced conductors are highly prone to large-amplitude galloping under wind conditions, with vibration amplitudes far exceeding those of conventional wind-induced vibrations, which can severely lead to phase-to-phase flashover and tower collapse. Therefore, in-depth research into the icing process and evolution mechanism of transmission conductors is a crucial foundation for improving the disaster prevention and mitigation capabilities of transmission lines. Currently, engineering practice for conductor icing issues mostly relies on rain, snow, and ice monitoring and early warning methods based on meteorological data to conduct macroscopic assessments of icing risks. However, experimental research on the formation mechanism and development law of conductor icing is relatively limited. Only a few scholars have conducted mechanistic studies on conductor icing using experimental conditions such as icing wind tunnels, and related experimental methods and devices still need to be improved.
[0003] In existing conductor icing test studies, fixed-support conductor segment models are typically used to conduct icing formation tests in icing wind tunnels to obtain icing morphology characteristics under different meteorological parameters. However, in actual transmission line operation, conductors are not completely rigid and fixed structures; they can rotate freely. Especially after uneven icing forms on the conductor surface, the unbalanced distribution of additional gravity easily induces rotational deformation of the conductor in the radial direction (the diameter direction of the conductor), thereby changing the conductor's windward attitude and local aerodynamic conditions, significantly altering the icing morphology and development process. Existing icing test devices generally ignore the conductor's torsional degree of freedom, treating the conductor as a fixed-attitude structure, making it difficult to accurately reflect the icing evolution behavior of the conductor under conditions of rotational capability, leading to deviations between test results and actual operating conditions. Summary of the Invention
[0004] This invention provides an edge rotation measuring device and method for conducting conductor icing tests, which solves the problem that existing icing test devices ignore the torsional degree of freedom of the conductor and treat the conductor as a fixed posture structure, making it difficult to truly reflect the icing evolution behavior of the conductor under conditions with rotational capability, resulting in deviations between test results and actual working conditions.
[0005] In a first aspect, the present invention provides an edge rotation measuring device for conductor icing tests, suitable for installation in an icing wind tunnel, comprising:
[0006] At least two rotation test components spaced apart, including a first rotation test component and a second rotation test component; The first rotation test assembly includes a first support plate, a first resistance component group, and a first rotating disk. The first support plate has at least one through hole, through which a wire is adapted to pass. The wire is rotatably connected to the first support plate. The first resistance component group is disposed on the first surface of the first support plate and on the outer periphery of the wire. The first rotating disk is fixedly connected to the wire. The resistance component group is fixedly disposed on the first surface of the first support plate. The first rotating disk is disposed on the side of the first resistance component group opposite to the first surface. The first resistance component group and the first rotating disk are connected.
[0007] The conductor slowly freezes inside the icing wind tunnel, causing the first rotating disk to rotate relative to the first resistance assembly, thus simulating the torsion of the conductor during the icing process.
[0008] In one optional embodiment, the first rotating disk includes a first fixing ring and at least one first torsion plate, the first torsion plate being disposed on the outer periphery of the first fixing ring, and the first fixing ring having a plurality of fixing holes, the fixing holes being adapted to insert fasteners.
[0009] In one alternative embodiment, the first resistance group includes four first elastic elements, adjacent first elastic elements are arranged at right angles, and the first torsion plate is connected to the first elastic elements.
[0010] In one alternative embodiment, the first resistance assembly further includes four "L"-shaped first fixing plates, with the first elastic element disposed between adjacent first fixing plates.
[0011] In one alternative embodiment, a first measuring component is further included, disposed on a first surface of the first support plate, the first measuring component being used to measure the rotation angle of the first torsion plate.
[0012] In one optional embodiment, the first measuring component includes a second fixed plate and a laser displacement rangefinder, wherein the second fixed plate is disposed on the first surface and the laser displacement rangefinder is disposed on the second fixed plate.
[0013] In one optional embodiment, the first rotation test assembly further includes a first connecting flange and a first bearing. The first connecting flange is connected to the first support plate and is disposed on the second surface of the first support plate. The first bearing is disposed in the inner hole of the first connecting flange and is adapted to pass through the wire.
[0014] In one alternative embodiment, the first inner ring of the first bearing extends outward toward the second surface opposite to the first support plate and has a first fixing portion. The first fixing portion is provided with at least three fastening holes in the circumferential direction, and fasteners are inserted into the fastening holes to fix the wire.
[0015] In one alternative implementation, one through hole corresponds to one wire, one through hole corresponds to one group of the first resistance elements, and one through hole corresponds to one of the first rotating disks.
[0016] Secondly, the present invention also provides a method for using an edge rotation measuring device for a conductor icing test, wherein the conductor slowly ices in an icing wind tunnel, causing the first rotating disk to rotate relative to the first resistance component group, so as to simulate the torsion of the conductor during the icing process. Attached Figure Description
[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram showing the arrangement of the first connecting flange and the first bearing when the first support plate is on the second surface according to an embodiment of the present invention. Figure 2 This is a schematic diagram showing the arrangement of the first resistance component group and the first rotating disk when the first support plate is on the first surface according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the first connecting flange according to an embodiment of the present invention; Figure 4 This is a front view of the first bearing according to an embodiment of the present invention; Figure 5 This is a top view of the first bearing according to an embodiment of the present invention; Figure 6 This is a schematic diagram showing the cooperation between the first resistance component assembly and the first rotating disk in an embodiment of the present invention; Figure 7 This is a front view of the first rotating disk according to an embodiment of the present invention; Figure 8 This is a top view of the first rotating disk according to an embodiment of the present invention.
[0019] Explanation of reference numerals in the attached drawings: 1. First support plate; 101. First surface; 102. Connecting hole; 103. Second surface; 2. First connecting flange; 201. Inner hole; 3. First bearing; 301. First inner ring; 302. First outer ring; 303. First fixing part; 304. Fastening hole; 4. First rotating disk; 401. First fixing ring; 402. First torsion plate; 403. Fixing hole; 5. Second fixing plate; 6. First resistance component assembly; 601. First elastic component; 602. First fixing plate. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0021] The following is combined Figures 1 to 8 The following describes embodiments of the present invention.
[0022] According to an embodiment of the present invention, in one aspect, an edge rotation measuring device for conductor icing test is provided, suitable for installation in an icing wind tunnel, comprising: at least two rotation test components spaced apart, including a first rotation test component and a second rotation test component; The first rotation test assembly includes a first support plate 1, a first resistance component group 6, and a first rotating disk 4. The first support plate 1 has at least one through hole, through which a wire is adapted to pass. The wire is rotatably connected to the first support plate 1. The first resistance component group 6 is disposed on the first surface 101 of the first support plate 1 and on the outer periphery of the wire. The first rotating disk 4 is fixedly connected to the wire. The first resistance component group 6 is fixedly disposed on the first surface 101 of the first support plate 1. The first rotating disk 4 is disposed on the side of the first resistance component group 6 away from the first surface 101. The first resistance component group 6 and the first rotating disk 4 are connected.
[0023] The conductor slowly freezes inside the icing wind tunnel, causing the first rotating disk 4 to rotate relative to the first resistance assembly 6. This simulates the torsion of the conductor during the icing process, ensuring consistency between actual and experimental conditions and facilitating in-depth research. It should be noted that the conductor mentioned in this application refers to a high-voltage transmission line on a high-voltage tower.
[0024] In this embodiment, the second rotation test assembly includes a second support plate, a second resistance element group, and a second rotating disk. The second support plate has a third surface and a fourth surface. The second resistance element group is disposed on the third surface of the second support plate, and the second rotating disk is disposed on the side of the second resistance element group opposite to the third surface. In this embodiment, the first support plate 1 and the second support plate have identical structures, the first rotating disk 4 and the second rotating disk have identical structures, and the first resistance element group 6 and the second resistance element group are configured identically.
[0025] In one embodiment, such as Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, the first rotating disk 4 includes a first fixing ring 401 and at least one first torsion plate 402. The first torsion plate 402 is disposed on the outer periphery of the first fixing ring 401. The first fixing ring 401 has a plurality of fixing holes 403, which are suitable for fasteners to pass through. Specifically, the fasteners are bolts. In this embodiment, four first torsion plates 402 are provided with equal arc on the outer periphery of the first fixing ring 401, and the first rotating disk 4 is fixedly connected to the wire by fasteners.
[0026] In this embodiment, the second torsion test assembly further includes a second rotating disk. The structure and size of the second rotating disk are exactly the same as those of the first rotating disk 4. That is, the second rotating disk includes a second fixed ring and four second torsion plates disposed on the outer periphery of the second fixed ring. The four second torsion plates are arranged at equal arcs along the outer periphery of the second fixed ring.
[0027] In one embodiment, such as Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, the first resistance element group 6 includes four first elastic elements 601, adjacent first elastic elements 601 are arranged at right angles, and a first torsion plate 402 is connected to the first elastic elements 601. Specifically, the first elastic element 601 is a spring, and the first torsion plate 402 is disposed within the spring's gap. It should be noted that, as... Figure 2 , Figure 6 As shown, the space formed by the four first elastic elements 601 is larger than the outer diameter of the first rotating disk 4. The wire passes through the space formed by the four first elastic elements 601. It should be noted that the first elastic elements 601 and the wire will not come into contact.
[0028] In one embodiment, such as Figure 2 , Figure 6 , Figure 7 and Figure 8As shown, the first resistance component group 6 also includes four "L"-shaped first fixing plates 602. A first elastic element 601 is provided between adjacent first fixing plates 602. That is, one side of a first fixing plate 602 is connected to one first elastic element 601, and the other side is connected to another first elastic element 601. Thus, the four first fixing plates 602 and the four first elastic elements 601 enclose a rectangular structure, allowing the wire to pass through the rectangular structure. The length direction of the rectangular structure is respectively perpendicular to... Figure 6 The X and Y axes are parallel.
[0029] In this embodiment, the second torsion test assembly also includes four second elastic elements and four "L"-shaped third fixing plates. The second elastic elements and the third fixing plates have the same structure, size and arrangement. One side of a third fixing plate is connected to a second elastic element and the other side is connected to another second elastic element.
[0030] In one embodiment, such as Figure 2 As shown, it also includes a first measuring component, which is disposed on the first surface 101 of the first support plate 1. The first measuring component measures the rotation angle of the first torsion plate 402, that is, the first measuring component measures the torsion angle of the first torsion plate 402 relative to the first fixed plate 602.
[0031] In one embodiment, such as Figure 2 As shown, the first measuring component includes a second fixed plate 5 and a laser displacement rangefinder. The second fixed plate 5 is disposed on the first surface 101, and the laser displacement rangefinder is disposed on the second fixed plate 5. A white plastic plate is attached to the first torsion plate 402, and the torsion angle is measured by the laser displacement rangefinder.
[0032] In this embodiment, a second measuring component is also included. The second measuring component includes a fourth fixed plate and a laser rangefinder. The fourth fixed plate has the same structure and layout as the second fixed plate 5. The second measuring component is disposed on the surface of the second support plate and is disposed on the same side as the second resistance component group. The fourth fixed plate is disposed on the second support plate, and the laser displacement rangefinder is disposed on the fourth fixed plate. A white rough plastic plate is pasted on the second torsion plate, and the torsion angle is measured by the laser displacement rangefinder.
[0033] In one embodiment, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the first rotation test assembly also includes a first connecting flange 2 and a first bearing 3. The first connecting flange 2 is connected to the first support plate 1 and is located on the second surface 103 of the first support plate 1. The first bearing 3 is located within the inner hole 201 of the first connecting flange 2 and is suitable for threading a wire. The rotation of the wire relative to the first support plate 1 is achieved through the first bearing 3.
[0034] In this embodiment, as Figure 1 , Figure 2 As shown, the first connecting flange 2 is connected to the first support plate 1 by fasteners. The fasteners pass through the connecting holes 102 of the first support plate 1 and are connected to a nut, wherein the nut is located within the space of the "L"-shaped first fixing plate 602. Specifically, the fasteners are bolts.
[0035] In one embodiment, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the first inner ring 301 of the first bearing 3 extends outward toward the second surface 103 of the first support plate 1 and has a first fixing part 303. The first fixing part 303 is provided with at least three fastening holes 304 in the circumferential direction. The inner diameter of the first fixing part 303 is equal to the inner diameter of the first inner ring 301, and the outer diameter of the first fixing part 303 is equal to the outer diameter of the first inner ring 301. Fasteners are inserted into the fastening holes 304 to fix the wires and realize the fixation of the bearing inner ring and the wires.
[0036] In this embodiment, the second rotation test assembly also includes a second connecting flange and a second bearing. The specific structure and arrangement of the second connecting flange and the second bearing are exactly the same as those of the first rotation test assembly. That is, the second connecting flange is connected to the second support plate by fasteners, and the second inner ring of the second bearing is provided with a second fixing part. The second fixing part is provided with a fastening hole 304 in the annular shape. Fasteners are inserted into the fastening hole 304 to fix the wires.
[0037] In this embodiment, as Figure 1 , Figure 2 As shown, the first support plate 1 or the second support plate is provided with at least one through hole. In this embodiment, the number of through holes in the first support plate 1 or the second support plate is not specifically limited. The number of through holes can be 1, 2, 4, 6, 8, 10, etc. In this embodiment, the number of through holes in the first support plate 1 or the second support plate is four. It should be noted that the number of the first support plate 1 is equal to the number of the second support plate.
[0038] In one embodiment, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, one through hole in the first support plate 1 corresponds to one wire, one through hole corresponds to one set of first resistance components 6 and one first measuring component, and one through hole corresponds to one first rotating disk 4.
[0039] To achieve control, a controller is also included, which is connected to the laser displacement rangefinder to receive and analyze the torsion angle of the first torsion plate 402, so that researchers can explore the icing evolution mechanism of the conductor under rotation.
[0040] A method for using an edge rotation measuring device for conductor icing testing includes the following steps: (1) Before the test, the first rotation test assembly and the second rotation test assembly are respectively connected to the two ends of the wire (the first rotation test assembly is connected to the guide through the first fixing part 303 of the first rotating disk 4 and the first bearing 3 respectively, and the second rotation test assembly is connected to the guide through the second fixing part of the second rotating disk and the second bearing respectively). The wire between the first rotation test assembly and the second rotation test assembly hangs down naturally and is set in an arc shape. (2) After the test begins, the wire will slowly freeze when placed in the icing wind tunnel. After uneven icing forms on the surface of the wire, the additional gravity distribution is unbalanced, which can easily induce the wire to rotate and deform around its own radial direction. This causes the first rotating disk 4 to rotate relative to the first support plate 1 and the second rotating disk to rotate relative to the second support plate. The laser displacement rangefinder measures the data and transmits it to the controller.
[0041] It should be noted that during the above test, the number of wires can be 1, 2, or 4. If there is 1 or 2 wires, it is not necessary to install bearings, rotating disks, and connecting flanges. In addition, the second surface 103 of the first support plate 1 and the fourth surface of the second support plate are correspondingly arranged, that is, the first surface 101 of the first support plate 1 is located on the side of the second surface 103 that is away from the fourth surface, and the third surface of the second support plate is located on the side of the fourth surface that is away from the second surface 103.
[0042] The edge rotation measuring device for conductor icing test provided by the present invention has the following advantages: (1) The conductor slowly ices in the icing wind tunnel, causing the first rotating disk 4 to rotate relative to the first resistance component group 6, so as to simulate the torsion of the conductor during the icing process, ensuring that the actual working conditions are consistent with the test working conditions, and facilitating researchers to conduct in-depth research; (2) The rotating disk, connecting flange and bearing of this application are all detachable, and can be flexibly installed and removed to adapt to conductors of different sizes.
[0043] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.
Claims
1. An edge rotation measuring device for conductor icing tests, suitable for installation in an icing wind tunnel, characterized in that, include: At least two rotation test components spaced apart, including a first rotation test component and a second rotation test component; The first rotation test assembly includes a first support plate (1), a first resistance component group (6), and a first rotating disk (4). The first support plate (1) has at least one through hole, and a wire is suitable for passing through the through hole. The wire is rotatably connected to the first support plate (1). The first resistance component group (6) is disposed on the first surface (101) of the first support plate (1) and on the outer periphery of the wire. The first rotating disk (4) is fixedly connected to the wire. The first resistance component group (6) is fixedly disposed on the first surface (101) of the first support plate (1). The first rotating disk (4) is disposed on the side of the first resistance component group (6) away from the first surface (101). The first resistance component group (6) and the first rotating disk (4) are connected.
2. The edge rotation measuring device for conductor icing test according to claim 1, characterized in that, The first rotating disk (4) includes a first fixing ring (401) and at least one first torsion plate (402). The first torsion plate (402) is disposed on the outer periphery of the first fixing ring (401). The first fixing ring (401) is provided with a plurality of fixing holes (403), and the fixing holes (403) are suitable for fasteners to be inserted.
3. The edge rotation measuring device for conductor icing test according to claim 2, characterized in that, The first resistance component group (6) includes four first elastic components (601), adjacent first elastic components (601) are arranged at right angles, and the first torsion plate (402) is connected to the first elastic components (601).
4. The edge rotation measuring device for conductor icing test according to claim 3, characterized in that, The first resistance component group (6) also includes four "L"-shaped first fixing plates (602), and the first elastic component (601) is provided between adjacent first fixing plates (602).
5. The edge rotation measuring device for conductor icing test according to claim 2, characterized in that, It also includes a first measuring component disposed on the first surface (101) of the first support plate (1), the first measuring component being used to measure the rotation angle of the first torsion plate (402).
6. The edge rotation measuring device for conductor icing test according to claim 5, characterized in that, The first measuring component includes a second fixed plate (5) and a laser displacement rangefinder. The second fixed plate (5) is disposed on the first surface (101), and the laser displacement rangefinder is disposed on the second fixed plate (5).
7. The edge rotation measuring device for conductor icing test according to claim 1, characterized in that, The first rotation test assembly further includes a first connecting flange (2) and a first bearing (3). The first connecting flange (2) is connected to the first support plate (1). The first connecting flange (2) is located on the second surface (103) of the first support plate (1). The first bearing (3) is located in the inner hole (201) of the first connecting flange (2). The first bearing (3) is adapted to pass through the wire.
8. The edge rotation measuring device for conductor icing test according to claim 7, characterized in that, The first inner ring (301) of the first bearing (3) extends outward toward the second surface (103) away from the first support plate (1) and has a first fixing part (303). The first fixing part (303) is provided with at least three fastening holes (304) in the circumferential direction. Fasteners are inserted into the fastening holes (304) to fix the wire.
9. The edge rotation measuring device for conductor icing test according to claim 1, characterized in that, One through hole corresponds to one wire, one through hole corresponds to one group of the first resistance components (6), and one through hole corresponds to one of the first rotating disks (4).
10. A method of using an edge rotation measuring device for conductor icing tests, for using the edge rotation measuring device for conductor icing tests as described in claim 1, characterized in that, The conductor slowly freezes inside the icing wind tunnel, causing the first rotating disk (4) to rotate relative to the first resistance assembly (6) to simulate the twisting of the conductor during the icing process.