CN117117757A - Horizontal maintenance and stability system for overhead transmission line - Google Patents
Horizontal maintenance and stability system for overhead transmission line Download PDFInfo
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- CN117117757A CN117117757A CN202311061307.8A CN202311061307A CN117117757A CN 117117757 A CN117117757 A CN 117117757A CN 202311061307 A CN202311061307 A CN 202311061307A CN 117117757 A CN117117757 A CN 117117757A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 163
- 238000012423 maintenance Methods 0.000 title claims abstract description 38
- 238000009434 installation Methods 0.000 claims abstract description 34
- 230000008030 elimination Effects 0.000 claims abstract description 21
- 238000003379 elimination reaction Methods 0.000 claims abstract description 21
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 6
- 230000008602 contraction Effects 0.000 abstract description 22
- 230000006641 stabilisation Effects 0.000 abstract description 6
- 238000011105 stabilization Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 9
- 238000013016 damping Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 7
- 238000007665 sagging Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
Classifications
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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
- H02G7/05—Suspension arrangements or devices for electric cables or lines
- H02G7/06—Suspensions for lines or cables along a separate supporting wire, e.g. S-hook
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Abstract
The application belongs to the field of transmission line stabilizing equipment, and particularly relates to a horizontal maintenance and stabilization system for an overhead transmission line. Connect in transmission tower and power transmission line, include: the horizontal assembly is connected with the transmission tower and the transmission line; the maintenance and stable installation assembly is connected to the horizontal assembly; the maintenance stability elimination reset component is arranged between the movable plates of the maintenance stability installation component. By adopting the horizontal component, the maintenance and stability installation component and the maintenance and stability elimination reset component, the thermal expansion and cold contraction of the power transmission line during temperature change can be effectively overcome while the level of the power transmission line is maintained, and the stability of the power transmission line under the wind load state is ensured.
Description
Technical Field
The application belongs to the field of transmission line stabilizing equipment, and particularly relates to a horizontal maintenance and stabilization system for an overhead transmission line.
Background
The power transmission line is realized by boosting the electric energy generated by the generator by using a transformer and accessing the electric energy into the power transmission line through control equipment such as a circuit breaker and the like.
In general, the following conditions may cause the transmission line to sag into an arc:
spanning a large distance: when the transmission line needs to span a long distance, the line may sag due to the gravity of the line itself, thereby forming an arc.
Uneven tension: in a transmission line, different tension forces are applied between different support towers. If the tension is unevenly distributed, the line may exhibit an arc.
Wind load: the strong wind can generate lateral pressure on the power transmission line, so that the line is bent to form an arc line.
Temperature change: the change in temperature causes expansion and contraction of the transmission line, thereby causing bending of the line.
The possible consequences of the sagging of the transmission line in an arc are as follows:
line sag: the arcs can cause the line to sag, putting the line in contact with the ground or other object, increasing the risk of line shorts and faults.
Uneven tension: the arc line can lead to uneven distribution of line tension, possibly lead to overload of the bearing capacity of the line tower, and increase the risk of damage and collapse of the line tower.
Line vibration: the arcs may increase vibration and sway of the line, potentially leading to fatigue failure and breakage of the line.
Electrical performance decreases: the arc line can cause the change of the electrical characteristics of the line, and can cause the problems of voltage loss, current overload and the like, and the stability and the reliability of the power transmission system are affected.
Even in partial scenarios, overhead transmission lines must be made straight.
The prior method for solving the arc shape of the overhead transmission line is as follows: the installation of the anti-arcing device and the addition of supporting towers or accessories, but the anti-arcing device has high cost, and the installation of the anti-arcing device can cause poor stability of the power transmission line, and the performance of the anti-arcing device is reduced when wind load or temperature changes.
Disclosure of Invention
In view of the above, the application provides a horizontal maintenance system for an overhead power transmission line, which can effectively overcome thermal expansion and contraction of the power transmission line when temperature changes and ensure the stability of the power transmission line in a wind load state by adopting a horizontal component, a maintenance installation component and a maintenance and elimination reset component while maintaining the level of the power transmission line.
In order to achieve the above purpose, the specific technical scheme is as follows:
the first aspect provides an overhead transmission line horizontal dimension steady system, connects on transmission tower and transmission line, includes:
the horizontal assembly comprises an auxiliary stay wire and a connecting rod;
wherein the auxiliary stay wire is connected between the transmission towers;
wherein a plurality of connecting rods are connected between the auxiliary stay wire and the power transmission line; and
the auxiliary stay wire passes through the two groups of the page plates;
the page plate is fixedly connected with the auxiliary stay wire through a line clamp arranged on the page plate; and
the maintenance and stability installation assembly comprises a supporting rod and a movable plate;
the first end of the supporting rod is fixed on the page plate, and the second end of the supporting rod is fixedly connected with the movable plate;
wherein, one dimensional stable installation component is provided with a combination of two groups of supporting rods and a movable plate, and one group of supporting rods is movably inserted into the other group of movable plate; and
the maintenance stable elimination reset assembly comprises a top plate, a connecting frame, a ball hinge, a reset spring and an elimination ball;
wherein the top plate is fixed on the movable plate;
the connecting frame comprises a 1# hard connecting frame, a 2# hard connecting frame and an elastic connecting frame, wherein the 1# hard connecting frame and the 2# hard connecting frame are fixed on the top plate through ball hinges, and the 1# hard connecting frame, the 2# hard connecting frame and the elastic connecting frame are connected through ball hinges;
the top plate is provided with the reset spring, and the ball joints connected with the 1# hard connecting frame, the 2# hard connecting frame and the elastic connecting frame are provided with the reset spring;
wherein, reset spring connects on the degerming ball jointly.
Further, the calculation formula of the length of the connecting rod is as follows:
L＝ax 2 +L 0
wherein L is the length of the connecting rod, a is a constant term, the numerical value of a is determined according to the length between transmission towers and the material of the transmission line, x is the horizontal distance between the lowest point of sag and the position where the connecting rod is required to be installed, and L0 is the length of the connecting rod connected between the lowest point of sag of the auxiliary stay wire and the transmission line.
Furthermore, the connecting rod and the auxiliary stay wire are connected with the power transmission line in a locking connection mode.
Further, a group or more than one group of combinations of a maintenance and stability installation component and a maintenance and stability elimination reset component are arranged between the auxiliary stay wires
Compared with the prior art, the application has the beneficial effects that:
1. line level is maintained: through installing horizontal component, including assisting acting as go-between and connecting rod, can make overhead transmission line keep the level effectively, avoid the circuit to produce too big arc and slope.
2. Solves the problem of thermal expansion and cold contraction: the change of the length of the power transmission line can be overcome by utilizing the maintenance installation component and the maintenance movement resetting component, so that the power transmission line is kept stable under the temperature change, and the line relaxation or fracture caused by excessive stretching or shrinkage is avoided.
3. Against wind loads: the power transmission line can be prevented from shaking under the action of wind load by the maintenance stabilization and elimination reset assembly, and the stability of the line is maintained. The vibration of the circuit can be counteracted by the movement of the damping ball, so that the stability of the circuit is maintained, and the impact and damage to the circuit are reduced.
4. The structure is simple and reliable: the system adopts a modular structure, and is relatively simple and convenient to install and maintain. The components are connected in a locking mode or in a ball hinge mode, so that the stability and the reliability are high.
5. The adaptability is strong: the system can be adjusted and optimized according to different line lengths and environmental conditions. Parameters such as auxiliary stay wire sagging radian, connecting rod length and rigidity of stable and stable canceling release component of dimension can be adjusted according to actual conditions to satisfy the demand under different scenes.
In summary, the horizontal maintenance system of the overhead transmission line can keep the line horizontal, overcome the influence caused by the length change and wind load effect, and ensure the stable and reliable operation of the transmission line.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present application;
FIG. 2 is a schematic diagram of a one-dimensional stable installation component and a three-dimensional stable elimination reset component installation structure according to an embodiment of the application;
FIG. 3 is a schematic view of a one-dimensional stable installation component according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a second embodiment of the present application;
FIG. 5 is a schematic diagram of a two-dimensional stability mounting assembly and a dimensionally stable, stationary reset assembly mounting structure in accordance with an embodiment of the present application;
FIG. 6 is a schematic diagram of a two-dimensional stable mounting assembly according to an embodiment of the present application;
FIG. 7 is a schematic view of a third embodiment of the present application;
FIG. 8 is a schematic diagram of a three-dimensional steady mounting assembly and a steady-state degaussing reset assembly mounting structure in accordance with an embodiment of the present application;
FIG. 9 is a schematic view of a three-dimensional stable mounting assembly according to an embodiment of the present application;
FIG. 10 is a schematic diagram of a dimensionally stable deghosted reset assembly according to the present application.
The figure shows:
transmission tower 100,
200 parts of power transmission line,
Horizontal component 300, auxiliary stay wire 310, connecting rod 320,
Page 400, line card 410
A maintenance and stable installation component 500, a supporting rod 510, a movable plate 520,
The maintenance and stabilization cancellation reset assembly 600, a top plate 610, a connecting frame 620, a # 1 hard connecting frame 621a, a # 2 hard connecting frame 621b, an elastic connecting frame 622, a ball hinge 630, a reset spring 640 and a cancellation ball 650.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1: the horizontal maintenance system of the unidirectional overhead transmission line is as follows, and the structure of the horizontal maintenance system is shown in figures 1-3.
A horizontal maintenance system of an overhead transmission line aims at providing a system which enables the overhead transmission line to be kept horizontal, overcomes the length change of the transmission line caused by thermal expansion and cold contraction of the transmission line and overcomes the shaking of the transmission line under the action of wind load. The conventional overhead transmission line is a transmission tower 100, and a transmission line 200 is connected through the transmission tower 100.
As shown in fig. 1, in order to keep the overhead transmission line horizontal, the present system employs a horizontal assembly 300, and the horizontal assembly 300 employs an auxiliary wire 310 and a connecting rod 320. In a specific installation, auxiliary wires 310 are connected between transmission towers 100 above transmission line 200. After installation, the sagging radian of the auxiliary stay wire 310 needs to be determined, and then a connecting rod 320 is installed between the auxiliary stay wire 310 and the power transmission line 200, and the connection mode is a lock catch type connection, so that the auxiliary stay wire 310, the power transmission line 200 and the connecting rod 320 are kept fixed.
The length of the connecting rod 320 is determined in the following manner:
L＝ax 2 +L 0
wherein L is the length of the connecting rod 320, a is a constant term, and the value of a is determined according to the length between the transmission towers 100 and the material of the transmission line 200. x is the horizontal distance between the lowest point of the sag and the position where the connecting rod 320 is to be installed, and L0 is the length of the connecting rod 320 connected between the lowest point of the sag of the auxiliary stay wire 310 and the power transmission line 200.
In order to overcome the length change of the power transmission line caused by thermal expansion and contraction of the power transmission line and overcome the shaking of the power transmission line under the action of wind load, the present embodiment adopts a set of maintenance and stabilization installation components 500 and maintenance and stabilization and elimination reset components 600.
As shown in fig. 1, 2 and 3, the dimensionally stable mounting assembly 500 is mounted between two sets of leaf plates 400. The auxiliary string 310 passes through the upper portion of the page 400 and is fixed by a line card 410 provided on the page 400.
As shown in fig. 3, the dimensionally stable mounting assembly 500 includes a strut 510 and a moving plate 520. Two uniformly distributed supporting rods 510 are arranged at the lower parts of the two groups of the page plates 400, and a movable plate 520 is fixedly arranged at the other ends of the supporting rods 510. In order to stabilize the whole page 400 and the subsequent mounting components, a group of support rods 510 are movably inserted into another group of movable plates 520, so that the distance between the movable plates 520 is only changed in the horizontal direction, and the problems of mutual dislocation and the like are not generated.
As shown in fig. 1 and 2, a dimensionally stable and stationary reset assembly 600 is mounted between the movable plates 520.
As shown in fig. 10, the structure of the dimensionally stable and stationary reset assembly 600 includes a top plate 610, a link 620, a ball hinge 630, a reset spring 640 and a stationary ball 650.
The two sets of moving plates 520 are both fixed with top plates 610, the connecting frame 620 comprises a 1# hard connecting frame 621a, a 2# hard connecting frame 621b and an elastic connecting frame 622, the 1# hard connecting frame 621a and the 2# hard connecting frame 621b are respectively fixed on the two sets of top plates 610 through ball hinges 630, and the 1# hard connecting frame 621a, the 2# hard connecting frame 621b and the elastic connecting frame 622 are connected through ball hinges 630. The top plate 610 is provided with the return spring 640, and the ball joints 630 connected with the # 1 hard connecting frame 621a, the # 2 hard connecting frame 621b and the elastic connecting frame 622 are provided with the return spring 640, so that the return spring 640 is commonly connected with the brake ball 650.
When in installation, the return springs 540 connected between the stop ball 650 and the top plate 610 are all in a stretched state, and the return springs 640 provided on the ball joints 630 connected with the 1# hard connecting frame 621a, the 2# hard connecting frame 621b and the elastic connecting frame 622 are all in a compressed state.
In specific use, the power transmission line 200 is in an arc shape due to the influence of gravity, so that the horizontal assembly 300 composed of the auxiliary stay wire 310 and the connecting rod 320 is adopted to overcome the influence of gravity.
Secondly, due to thermal expansion, the simple horizontal assembly 300 cannot be adjusted, so that the cooperation of the dimensional stability installation assembly 500 and the dimensional stability elimination reset assembly 600 is adopted, in the application, the reset springs 640 connected between the elimination ball 650 and the top plate 610 are all in a stretched state, the reset springs 640 arranged on the ball joints 630 connected with the 1# hard connecting frame 621a, the 2# hard connecting frame 621b and the elastic connecting frame 622 are all in a compressed state, due to thermal expansion, the transmission line is relaxed, and the auxiliary stay wire 310 is again centered and contracted by the restoring force of the stretching and compression of the reset springs 640. Because the auxiliary stay wire 310 is connected with the power transmission line 200 through the connecting rod 320, and the hinge plate 400 is fixed with the connecting rods 320 at two sides of the hinge plate, the power transmission line 200 is centrally contracted, and the level of the power transmission line is ensured.
Under the state that the transmission line is contracted, the transmission line can be more horizontal, so that the horizontal problem of the transmission line during contraction is not required to be considered, and the stability problem of the transmission line is not required to be considered because of the high strength of the transmission line, and only the stability problem of the auxiliary stay wire 310 during contraction is required to be considered, as can be obtained from fig. 1, the auxiliary stay wire 310 is in a loose state in the middle, when contraction occurs, the reset spring 640 connected between the degerming ball 650 and the top plate 610 is secondarily stretched, and the reset spring 640 arranged on the ball hinge 630 connected with the 1# hard link 621a, the 2# hard link 621b and the elastic link 622 is in a recompression state, so that the distance between two groups of page plates 400 is increased, the tightening state of the auxiliary stay wire 310 caused by contraction of the transmission line 200 is relieved, the auxiliary stay wire 310 is prevented from being broken, and the auxiliary stay wire 310 is protected.
As shown in fig. 10, regardless of the change, the damping ball 650 is centered, due to the wind load, the transmission line 200 and the auxiliary stay 310 shake, so that the return spring 640 on one side is compressed, and the return spring 640 on the opposite side is stretched, so that the damping ball 650 moves along the opposite direction of the wind load, thereby counteracting the vibration of the transmission line 200 and the auxiliary stay 310, and keeping the transmission line 200 and the auxiliary stay 310 stable.
Example 2: the horizontal maintenance system of the bidirectional overhead transmission line is as follows, and the structure is shown in figures 4-6
A horizontal maintenance system of an overhead transmission line aims at providing a system which enables the overhead transmission line to be kept horizontal, overcomes the length change of the transmission line caused by thermal expansion and cold contraction of the transmission line and overcomes the shaking of the transmission line under the action of wind load. The conventional overhead transmission line is a transmission tower 100, and a transmission line 200 is connected through the transmission tower 100.
As shown in fig. 4, in order to keep the overhead transmission line horizontal, the present system employs a horizontal assembly 300, and the horizontal assembly 300 employs an auxiliary wire 310 and a connecting rod 320. In a specific installation, auxiliary wires 310 are connected between transmission towers 100 above transmission line 200. After installation, the sagging radian of the auxiliary stay wire 310 needs to be determined, and then a connecting rod 320 is installed between the auxiliary stay wire 310 and the power transmission line 200, and the connection mode is a lock catch type connection, so that the auxiliary stay wire 310, the power transmission line 200 and the connecting rod 320 are kept fixed.
The length of the connecting rod 320 is determined in the following manner:
L＝ax 2 +L 0
wherein L is the length of the connecting rod 320, a is a constant term, and the value of a is determined according to the length between the transmission towers 100 and the material of the transmission line 200. x is the horizontal distance between the lowest point of the sag and the position where the connecting rod 320 is to be installed, and L0 is the length of the connecting rod 320 connected between the lowest point of the sag of the auxiliary stay wire 310 and the power transmission line 200.
In order to overcome the length change of the power transmission line caused by thermal expansion and contraction of the power transmission line and overcome the shaking of the power transmission line under the action of wind load, the embodiment adopts two symmetrical maintenance and stability installation assemblies 500 and a maintenance and stability elimination reset assembly 600.
As shown in fig. 4, 5 and 6, the dimensionally stable mounting assembly 500 is mounted between two sets of leaf plates 400. The auxiliary stay 310 passes through a central position of the page 400 and is fixed by a line card 410 provided on the page 400.
As shown in fig. 4, the dimensionally stable mounting assembly 500 includes a strut 510 and a moving plate 520. Two uniformly distributed supporting rods 510 are arranged at two ends of the two groups of the page plates 400, and a movable plate 520 is fixedly arranged at the other end of the supporting rods 510. In order to stabilize the whole page 400 and the subsequent mounting components, a group of support rods 510 are movably inserted into another group of movable plates 520, so that the distance between the movable plates 520 is only changed in the horizontal direction, and the problems of mutual dislocation and the like are not generated.
As shown in fig. 4 and 5, a dimensionally stable and stationary reset assembly 600 is mounted between the movable plates 520.
As shown in fig. 10, the structure of the dimensionally stable and stationary reset assembly 600 includes a top plate 610, a link 620, a ball hinge 630, a reset spring 640 and a stationary ball 650.
The two sets of moving plates 520 are both fixed with top plates 610, the connecting frame 620 comprises a 1# hard connecting frame 621a, a 2# hard connecting frame 621b and an elastic connecting frame 622, the 1# hard connecting frame 621a and the 2# hard connecting frame 621b are respectively fixed on the two sets of top plates 610 through ball hinges 630, and the 1# hard connecting frame 621a, the 2# hard connecting frame 621b and the elastic connecting frame 622 are connected through ball hinges 630. The top plate 610 is provided with the return spring 640, and the ball joints 630 connected with the # 1 hard connecting frame 621a, the # 2 hard connecting frame 621b and the elastic connecting frame 622 are provided with the return spring 640, so that the return spring 640 is commonly connected with the brake ball 650.
When in installation, the return springs 540 connected between the stop ball 650 and the top plate 610 are all in a stretched state, and the return springs 640 provided on the ball joints 630 connected with the 1# hard connecting frame 621a, the 2# hard connecting frame 621b and the elastic connecting frame 622 are all in a compressed state.
In specific use, the power transmission line 200 is in an arc shape due to the influence of gravity, so that the horizontal assembly 300 composed of the auxiliary stay wire 310 and the connecting rod 320 is adopted to overcome the influence of gravity.
Secondly, due to thermal expansion, the simple horizontal assembly 300 cannot be adjusted, so that the cooperation of the dimensional stability installation assembly 500 and the dimensional stability elimination reset assembly 600 is adopted, in the application, the reset springs 640 connected between the elimination ball 650 and the top plate 610 are all in a stretched state, the reset springs 640 arranged on the ball joints 630 connected with the 1# hard connecting frame 621a, the 2# hard connecting frame 621b and the elastic connecting frame 622 are all in a compressed state, due to thermal expansion, the transmission line is relaxed, and the auxiliary stay wire 310 is again centered and contracted by the restoring force of the stretching and compression of the reset springs 640. Because the auxiliary stay wire 310 is connected with the power transmission line 200 through the connecting rod 320, and the hinge plate 400 is fixed with the connecting rods 320 at two sides of the hinge plate, the power transmission line 200 is centrally contracted, and the level of the power transmission line is ensured.
Under the state that the transmission line is contracted, the transmission line can be more horizontal, so that the horizontal problem of the transmission line during contraction is not required to be considered, and the stability problem of the transmission line is not required to be considered because of the high strength of the transmission line, and only the stability problem of the auxiliary stay wire 310 during contraction is required to be considered, as can be obtained from fig. 1, the auxiliary stay wire 310 is in a loose state in the middle, when contraction occurs, the reset spring 640 connected between the degerming ball 650 and the top plate 610 is secondarily stretched, and the reset spring 640 arranged on the ball hinge 630 connected with the 1# hard link 621a, the 2# hard link 621b and the elastic link 622 is in a recompression state, so that the distance between two groups of page plates 400 is increased, the tightening state of the auxiliary stay wire 310 caused by contraction of the transmission line 200 is relieved, the auxiliary stay wire 310 is prevented from being broken, and the auxiliary stay wire 310 is protected.
As shown in fig. 10, regardless of the change, the damping ball 650 is centered, due to the wind load, the transmission line 200 and the auxiliary stay 310 shake, so that the return spring 640 on one side is compressed, and the return spring 640 on the opposite side is stretched, so that the damping ball 650 moves along the opposite direction of the wind load, thereby counteracting the vibration of the transmission line 200 and the auxiliary stay 310, and keeping the transmission line 200 and the auxiliary stay 310 stable.
And meanwhile, two symmetrical dimensional stability installation assemblies 500 and a dimensional stability elimination reset assembly 600 are arranged, so that the stability of the whole equipment is stronger, and the equipment is the best choice.
Example 3: the horizontal maintenance system of multiple overhead transmission lines is as follows, and its structure is shown in figures 7-9
A horizontal maintenance system of an overhead transmission line aims at providing a system which enables the overhead transmission line to be kept horizontal, overcomes the length change of the transmission line caused by thermal expansion and cold contraction of the transmission line and overcomes the shaking of the transmission line under the action of wind load. The conventional overhead transmission line is a transmission tower 100, and a transmission line 200 is connected through the transmission tower 100.
As shown in fig. 7, in order to keep the overhead transmission line horizontal, the present system employs a horizontal assembly 300, and the horizontal assembly 300 employs an auxiliary wire 310 and a connecting rod 320. In a specific installation, auxiliary wires 310 are connected between transmission towers 100 above transmission line 200. After installation, the sagging radian of the auxiliary stay wire 310 needs to be determined, and then a connecting rod 320 is installed between the auxiliary stay wire 310 and the power transmission line 200, and the connection mode is a lock catch type connection, so that the auxiliary stay wire 310, the power transmission line 200 and the connecting rod 320 are kept fixed.
The length of the connecting rod 320 is determined in the following manner:
L＝ax 2 +L 0
wherein L is the length of the connecting rod 320, a is a constant term, and the value of a is determined according to the length between the transmission towers 100 and the material of the transmission line 200. x is the horizontal distance between the lowest point of the sag and the position where the connecting rod 320 is to be installed, and L0 is the length of the connecting rod 320 connected between the lowest point of the sag of the auxiliary stay wire 310 and the power transmission line 200.
In order to overcome the length change of the power transmission line caused by thermal expansion and contraction of the power transmission line and overcome the shaking of the power transmission line under the action of wind load, the embodiment adopts four groups of symmetrical maintenance and stability installation components 500 and maintenance and stability elimination reset components 600.
As shown in fig. 7, 8 and 9, the dimensionally stable mounting assembly 500 is mounted between two sets of leaf plates 400. The auxiliary stay 310 passes through a central position of the page 400 and is fixed by a line card 410 provided on the page 400.
As shown in fig. 4, the dimensionally stable mounting assembly 500 includes a strut 510 and a moving plate 520. Two uniformly distributed supporting rods 510 are arranged at four corners of the two groups of the page plates 400, and a movable plate 520 is fixedly arranged at the other end of each supporting rod 510. In order to stabilize the whole page 400 and the subsequent mounting components, a group of support rods 510 are movably inserted into another group of movable plates 520, so that the distance between the movable plates 520 is only changed in the horizontal direction, and the problems of mutual dislocation and the like are not generated.
As shown in fig. 8 and 9, a dimensionally stable and stationary reset assembly 600 is mounted between the movable plates 520.
As shown in fig. 10, the structure of the dimensionally stable and stationary reset assembly 600 includes a top plate 610, a link 620, a ball hinge 630, a reset spring 640 and a stationary ball 650.
The two sets of moving plates 520 are both fixed with top plates 610, the connecting frame 620 comprises a 1# hard connecting frame 621a, a 2# hard connecting frame 621b and an elastic connecting frame 622, the 1# hard connecting frame 621a and the 2# hard connecting frame 621b are respectively fixed on the two sets of top plates 610 through ball hinges 630, and the 1# hard connecting frame 621a, the 2# hard connecting frame 621b and the elastic connecting frame 622 are connected through ball hinges 630. The top plate 610 is provided with the return spring 640, and the ball joints 630 connected with the # 1 hard connecting frame 621a, the # 2 hard connecting frame 621b and the elastic connecting frame 622 are provided with the return spring 640, so that the return spring 640 is commonly connected with the brake ball 650.
When in installation, the return springs 540 connected between the stop ball 650 and the top plate 610 are all in a stretched state, and the return springs 640 provided on the ball joints 630 connected with the 1# hard connecting frame 621a, the 2# hard connecting frame 621b and the elastic connecting frame 622 are all in a compressed state.
In specific use, the power transmission line 200 is in an arc shape due to the influence of gravity, so that the horizontal assembly 300 composed of the auxiliary stay wire 310 and the connecting rod 320 is adopted to overcome the influence of gravity.
Secondly, due to thermal expansion, the simple horizontal assembly 300 cannot be adjusted, so that the cooperation of the dimensional stability installation assembly 500 and the dimensional stability elimination reset assembly 600 is adopted, in the application, the reset springs 640 connected between the elimination ball 650 and the top plate 610 are all in a stretched state, the reset springs 640 arranged on the ball joints 630 connected with the 1# hard connecting frame 621a, the 2# hard connecting frame 621b and the elastic connecting frame 622 are all in a compressed state, due to thermal expansion, the transmission line is relaxed, and the auxiliary stay wire 310 is again centered and contracted by the restoring force of the stretching and compression of the reset springs 640. Because the auxiliary stay wire 310 is connected with the power transmission line 200 through the connecting rod 320, and the hinge plate 400 is fixed with the connecting rods 320 at two sides of the hinge plate, the power transmission line 200 is centrally contracted, and the level of the power transmission line is ensured.
Under the state that the transmission line is contracted, the transmission line can be more horizontal, so that the horizontal problem of the transmission line during contraction is not required to be considered, and the stability problem of the transmission line is not required to be considered because of the high strength of the transmission line, and only the stability problem of the auxiliary stay wire 310 during contraction is required to be considered, as can be obtained from fig. 1, the auxiliary stay wire 310 is in a loose state in the middle, when contraction occurs, the reset spring 640 connected between the degerming ball 650 and the top plate 610 is secondarily stretched, and the reset spring 640 arranged on the ball hinge 630 connected with the 1# hard link 621a, the 2# hard link 621b and the elastic link 622 is in a recompression state, so that the distance between two groups of page plates 400 is increased, the tightening state of the auxiliary stay wire 310 caused by contraction of the transmission line 200 is relieved, the auxiliary stay wire 310 is prevented from being broken, and the auxiliary stay wire 310 is protected.
As shown in fig. 10, regardless of the change, the damping ball 650 is centered, due to the wind load, the transmission line 200 and the auxiliary stay 310 shake, so that the return spring 640 on one side is compressed, and the return spring 640 on the opposite side is stretched, so that the damping ball 650 moves along the opposite direction of the wind load, thereby counteracting the vibration of the transmission line 200 and the auxiliary stay 310, and keeping the transmission line 200 and the auxiliary stay 310 stable.
And meanwhile, two symmetrical dimensional stability installation assemblies 500 and a dimensional stability elimination reset assembly 600 are arranged, so that the stability of the whole equipment is stronger, and the equipment is the best choice.
Four sets of symmetrical dimensional stability mounting assemblies 400 and dimensional stability canceling release units 500 are provided simultaneously, resulting in a stronger overall device stability, but increased weight, non-optimal choice.
The basic principles of the present application have been described above in connection with specific embodiments, however, it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are merely examples and not intended to be limiting, and these advantages, benefits, effects, etc. are not to be considered as essential to the various embodiments of the present application. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the application is not necessarily limited to practice with the above described specific details.
The block diagrams of the devices, apparatuses, devices, systems referred to in the present application are only illustrative examples and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.
It is also noted that in the apparatus, devices and methods of the present application, the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present application.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features herein.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is to be construed as including any modifications, equivalents, and alternatives falling within the spirit and principles of the application.
Claims (4)
1. An overhead transmission line horizontal dimension steady system, is connected on transmission tower and transmission line, its characterized in that includes:
the horizontal assembly comprises an auxiliary stay wire and a connecting rod;
wherein the auxiliary stay wire is connected between the transmission towers;
wherein a plurality of connecting rods are connected between the auxiliary stay wire and the power transmission line; and
the auxiliary stay wire passes through the two groups of the page plates;
the page plate is fixedly connected with the auxiliary stay wire through a line clamp arranged on the page plate; and
the maintenance and stability installation assembly comprises a supporting rod and a movable plate;
the first end of the supporting rod is fixed on the page plate, and the second end of the supporting rod is fixedly connected with the movable plate;
wherein, one dimensional stable installation component is provided with a combination of two groups of supporting rods and a movable plate, and one group of supporting rods is movably inserted into the other group of movable plate; and
the maintenance stable elimination reset assembly comprises a top plate, a connecting frame, a ball hinge, a reset spring and an elimination ball;
wherein the top plate is fixed on the movable plate;
the connecting frame comprises a 1# hard connecting frame, a 2# hard connecting frame and an elastic connecting frame, wherein the 1# hard connecting frame and the 2# hard connecting frame are fixed on the top plate through ball hinges, and the 1# hard connecting frame, the 2# hard connecting frame and the elastic connecting frame are connected through ball hinges;
the top plate is provided with the reset spring, and the ball joints connected with the 1# hard connecting frame, the 2# hard connecting frame and the elastic connecting frame are provided with the reset spring;
wherein, reset spring connects on the degerming ball jointly.
2. The overhead transmission line horizontal dimension stabilizing system according to claim 1, wherein the connecting rod length calculation formula is:
L＝ax 2 +L 0
wherein L is the length of the connecting rod, a is a constant term, the numerical value of a is determined according to the length between transmission towers and the material of the transmission line, x is the horizontal distance between the lowest point of sag and the position where the connecting rod is required to be installed, and L0 is the length of the connecting rod connected between the lowest point of sag of the auxiliary stay wire and the transmission line.
3. The horizontal maintenance system of an overhead transmission line according to claim 1, wherein the connecting rod is connected with the auxiliary stay wire and the transmission line in a locking connection mode.
4. A horizontal dimension stabilizing system for overhead transmission line according to any one of claims 1-3, wherein a combination of one or more sets of dimension stabilizing installation components and dimension stabilizing and canceling-moving reset components are installed between the auxiliary wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311061307.8A CN117117757A (en) | 2023-08-22 | 2023-08-22 | Horizontal maintenance and stability system for overhead transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311061307.8A CN117117757A (en) | 2023-08-22 | 2023-08-22 | Horizontal maintenance and stability system for overhead transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117117757A true CN117117757A (en) | 2023-11-24 |
Family
ID=88801496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311061307.8A Pending CN117117757A (en) | 2023-08-22 | 2023-08-22 | Horizontal maintenance and stability system for overhead transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117117757A (en) |
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2023
- 2023-08-22 CN CN202311061307.8A patent/CN117117757A/en active Pending
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