An insulator string capable of automatically consuming energy in a transmission line

Abstract

An insulator string that can automatically consume energy in a power transmission line relates to the technical field of power transmission line operation. One end of a hanging plate is connected to a right-angle hanging plate via a connecting bolt, the right-angle hanging plate is connected to a spring hardware one via an adjusting pad, the spring hardware one is connected to the core rod of the insulator via an adjusting joint plate one and a ball head hanging plate, the other end of the insulator is connected to a spring hardware two via a ball head hanging plate and an adjusting joint plate two, the spring hardware two is connected to a wire clamp hardware via an adjusting pad and a right-angle hanging plate, the wire clamp hardware is connected to a wire clamp wire groove via a wire clamp pin, a power transmission wire is fixed on the wire clamp wire groove, and an amplitude measuring device is provided on the adjusting joint plate one and the adjusting joint plate two, respectively. The present invention generates a deformation margin at the wire clamp where fatigue strand break occurs, and the front and rear springs automatically consume energy to avoid vibration phase difference and increase the energy consumption effect. The structure is simple and has a wide range of applications. It reduces stress concentration and dynamic bending strain at the wire clamp of the transmission line, reduces fatigue strand breakage, and increases the service life of the transmission wire.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission line operation, in particular to an insulator string capable of automatically consuming energy in a power transmission line. Background Art

[0002] During the operation of the transmission line, when it is affected by wind, with the influence of factors such as wind speed, ice cover, conductor type, terrain conditions, etc., there will be corresponding high-frequency and low-amplitude breeze vibration, medium-frequency and medium-amplitude sub-span vibration and low-frequency and high-amplitude dancing, among which breeze vibration is particularly common. These kinds of vibrations will pose a great threat to the safe operation of the transmission line. Therefore, it is necessary to reduce the line vibration and take energy-consuming measures. At present, the commonly used energy-consuming methods are to install anti-vibration hammers, damping wires, and timely remove ice and other measures for prevention and control. However, at the fixed part of the tower of the conductor, the repeated bending of the conductor will accumulate a large dynamic bending strain. Long-term accumulation will cause the conductor to fatigue and break, thus threatening the safe operation of the line. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide an insulator string that can automatically dissipate energy in a transmission line, effectively reduce the stress concentration and dynamic bending strain of the transmission line at the installation point, reduce the fatigue breakage of the transmission line, and increase the safe operation life of the transmission line.

[0004] To achieve the above-mentioned purpose of the invention, the present invention includes a hanging plate, a right-angle hanging plate, an adjustment pad, a spring hardware one, a spring hardware two, an adjustment connecting plate one, an adjustment connecting plate two, an insulator, a wire clamp hardware, and a wire clamp wire trough. One end of the hanging plate is connected to the right-angle hanging plate via a connecting bolt, the right-angle hanging plate is connected to the spring hardware one via an adjustment pad, the spring hardware one is connected to the core rod of the insulator via the adjustment connecting plate one and the ball head hanging plate, the other end of the insulator is connected to the spring hardware two via the ball head hanging plate and the adjustment connecting plate two, the spring hardware two is connected to the wire clamp hardware via the adjustment pad and the right-angle hanging plate, the wire clamp hardware is connected to the wire clamp wire trough via the wire clamp pin, and a transmission wire is fixed on the wire clamp wire trough.

[0005] Furthermore, the first adjustment link plate and the second adjustment link plate are respectively provided with amplitude measuring devices.

[0006] Furthermore, the amplitude measuring device includes an amplitude measuring pointer and an amplitude measuring scale rod. The amplitude measuring pointer is connected to the adjustment pad via an amplitude measuring pointer mounting nail, and the amplitude measuring scale rod is connected to the adjustment connecting plate one or the adjustment connecting plate two via the amplitude measuring scale rod mounting nail.

[0007] Furthermore, the other end of the hanging plate is fixedly connected to the cross arm hanger via an installation pin.

[0008] Furthermore, the first hanging plate is one of a double-plate parallel hanging plate, a U-shaped hanging plate or a duckbill hanging plate.

[0009] Furthermore, an upper voltage-equalizing ring and a lower voltage-equalizing ring are respectively provided at both ends of the insulator.

[0010] Furthermore, the connecting bolt and the wire clamp pin head end are provided with a closed pin.

[0011] Furthermore, an aluminum conductor tape is provided on the outside of the transmission conductor, and the aluminum conductor tape is fixed to the wire clamp trough via U-shaped bolts.

[0012] Furthermore, the wire clamp wire trough is a bag-type wire trough or a pre-twisted wire trough.

[0013] Furthermore, both ends of the spring hardware fitting 1 and the spring hardware fitting 2 are provided with spring hardware straight sections, the spring hardware straight sections are provided with threads, and the threads are connected with fixing nuts. The number of spring rings of the spring hardware fitting 1 and the spring hardware fitting 2 is 6 to 10 rings.

[0014] Compared with the prior art, when the transmission line system of the present invention encounters external energy such as wind energy, the spring hardware changes from a balanced state to an extended state, and a deformation margin is generated at the wire clamp where fatigue breakage is very likely to occur, and automatic energy consumption is performed in the front and rear springs of the insulator string, and the upper and lower springs effectively avoid the phase difference of vibration, thereby increasing the effect of energy consumption. The bolt-fastened connection form of the present invention has a simple structure, large parts replaceability, and a relatively wide range of applications. It can consume energy at key locations, reduce stress concentration and dynamic bending strain at the wire clamp of the transmission line, reduce fatigue breakage, reduce the number of replacements of the transmission line, and increase the service life of the transmission line during safe operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of the structure of the present invention.

[0017] Figure 2 yes Figure 1 Schematic diagram of the partial structure of the spring fittings and amplitude measuring device.

[0018] Figure 3 This is a schematic diagram of a duckbill type hanging plate.

[0019] Figure 4 This is a schematic diagram of a U-shaped hanging plate.

[0020] Figure 5 Schematic diagram of double-plate parallel hanging.

[0021] Figure 6 Schematic diagram of pre-twisted wire clamp.

[0022] Figure 7This is a schematic diagram of the use of the present invention. Figure 1 . (Double insulator double hanging point type)

[0023] Figure 8 This is a schematic diagram of the use of the present invention. Figure 2 . (Single insulator double hanging point type)

[0024] Fig. 9 This is a schematic diagram of the use of the present invention. Figure 3 . (Double insulator single hanging point type)

[0025] In the figure, 1, hanging plate 1, 2, mounting pin, 3, connecting bolt, 4, right angle hanging plate, 5, closing pin, 6, adjusting pad, 7, spring hardware 1, 8, adjusting connecting plate 1, 9, ball head hanging plate, 10, core rod, 11, upper equalizing ring, 12, insulator, 13, lower equalizing ring, 14, adjusting connecting plate 2, 15, spring hardware 2, 16, wire clamp hardware, 17, wire clamp pin, 18, wire clamp wire groove, 19, U-bolt, 20, amplitude measurement pointer, 21, amplitude measurement scale rod, 22, Connecting hole, 23, fixing nut, 24, spring hardware straight section, 25, gasket, 26, amplitude measurement pointer mounting nail, 27, amplitude measurement scale rod mounting nail, 28, cross arm hanger, 29, stiffening plate, 30, triangular connecting plate, 31, rectangular connecting plate, 32, conductor aluminum tape, 33, transmission line, 34, pre-twisted wire clamp trough, 35, pre-twisted wire, 36, pre-twisted wire clamp hardware, 37, duckbill hanging plate, 38, duckbill hanging hole, 39, U-shaped hanging plate, 40, double-plate parallel hanging plate. DETAILED DESCRIPTION

[0026] like Figure 1 , Figure 2As shown, the present invention includes a hanging plate 1, a right-angle hanging plate 4, an adjustment pad 6, a spring hardware 17, a spring hardware 2 15, an adjustment joint plate 18, an adjustment joint plate 2 14, an insulator 12, a wire clamp hardware 16, and a wire clamp wire groove 18. The spring hardware includes a spring hardware 17 and a spring hardware 2 15. The adjustment joint plate includes an adjustment joint plate 18 and an adjustment joint plate 2 14. One end of the hanging plate 1 is connected to the right-angle hanging plate 4 via a connecting bolt 3. The right-angle hanging plate 4 is connected to the spring hardware 17 via an adjustment pad 6. The adjustment pad 6 is provided with a connecting hole 22. The spring hardware 17 passes through the connecting hole 22 and is fixed by a fixing nut 23 and a gasket 25. The spring hardware 17 is connected to the core rod 10 of the insulator 12 via an adjustment joint plate 18 and a ball-head hanging plate 9. The core rod 10 and the insulator 12 are connected as a whole. The other end of the insulator 12 is connected to the right-angle hanging plate 4 via a ball-head hanging plate 9 and an adjustment joint plate 2 14. The spring hardware 15 is connected, and the spring hardware 15 is connected to the wire clamp hardware 16 through the adjustment pad 6 and the right-angle hanging plate 4. The two pieces of the wire clamp hardware 16 are a group. The wire clamp hardware 16 is connected to the grooves on both sides of the wire clamp wire groove 18 through the wire clamp pin 17. The right-angle hanging plate 4 changes the direction of the wire clamp wire groove 18. The wire clamp hardware 16 and the wire clamp wire groove 18 are provided with hanging holes. The wire clamp pin 17 passes through the hanging holes to fix the wire groove 18. The transmission wire 33 is fixed on the wire clamp wire groove 18. There are triangular protrusions on the wire clamp wire groove 18 to fix the U-bolt 19. The U-bolt 19 fixes the wire clamp wire groove 18 and the transmission wire 32 together.

[0027] The adjusting joint plate 1 8 and the adjusting joint plate 2 14 are respectively provided with amplitude measuring devices to measure and monitor the amplitude of the spring hardware 1 7 and the spring hardware 2 15 in real time.

[0028] The amplitude measuring device includes an amplitude measuring pointer 20 and an amplitude measuring scale rod 21. The amplitude measuring pointer 20 is connected to the adjustment pad 6 via an amplitude measuring pointer mounting nail 26, and the amplitude measuring scale rod 21 is connected to the adjustment joint plate 1 8 or the adjustment joint plate 2 14 via an amplitude measuring scale rod mounting nail 27. The amplitude measuring pointer 20 and the amplitude measuring scale rod 21 are used together. When the amplitude measuring pointer 20 points to the amplitude measuring scale rod 21 and is balanced after installation, the position is marked with a 0 scale. When the spring is deformed, the spring deformation is read out at the position pointed to by the amplitude measuring scale rod 21 through the amplitude measuring pointer 20, which is used to monitor the vibration of the power transmission line during actual use.

[0029] The other end of the hanging plate 1 is fixedly connected to the cross arm hanger 28 via the installation pin 2. The cross arm hanger 28 is also provided with a stiffening plate 29, the length of the left and right sides of the stiffening plate 29 is 100 cm, which increases the strength of the cross arm hanger 28. The installation pin 2 passes through the stiffening plate 29 to fix the hanging plate 1 on the cross arm hanger 28.

[0030] The hanging plate 1 is one of a double-plate parallel hanging plate, a U-shaped hanging plate or a duckbill hanging plate. The hanging plate 1 can be selected from the double-plate parallel hanging plate, the U-shaped hanging plate or the duckbill hanging plate according to factors such as the force applied to the transmission wire 32, the position and form of the hanging parts on the cross arm of the iron tower, and the like.

[0031] like Figure 3 The figure shows a schematic diagram of a duckbill hanging plate. The duckbill hanging plate is assembled by folding a duckbill hanging plate 37 into a connecting piece with a wide upper hole and a narrow lower hole. The mounting pin 2 passes through the upper end of the duckbill hanging plate 37 and is fastened on both sides with a fixing nut 23 and a closing pin 5. The lower end of the duckbill hanging plate 37 is provided with a duckbill hanging hole 38 for hanging the right-angle hanging plate 4 at the lower part.

[0032] like Figure 4 The U-shaped hanging plate is shown in FIG. The U-shaped hanging plate is passed through the U-shaped hanging plate 39 by the bolt 2, and the two sides are fastened with the fixing nut 23 and the closing pin 5. The lower end of the U-shaped hanging plate 39 is provided with a connection hole for hanging the right-angle hanging plate 4.

[0033] like Figure 5 The double-plate parallel hanging plate is provided with a double-plate parallel hanging plate 40, with a hole in the middle, and the installation pin 2 passes through the double-plate parallel hanging plate 40, and is fastened with bolts 3 and closing pins 5 on both sides.

[0034] An upper voltage grading ring 11 and a lower voltage grading ring 13 are respectively provided at two ends of the insulator 12. The number of insulator strings is determined according to the voltage level.

[0035] The head ends of the connecting bolt 3 and the wire clamp pin 17 are provided with a closed pin 5 to prevent the nut from loosening.

[0036] The transmission wire 33 is provided with an aluminum conductor tape 32 on the outside, and the aluminum conductor tape 32 is fixed to the wire clamp groove 18 via U-bolts 19, so as to prevent the transmission wire 33 from being exposed and enhance the rigidity of the transmission wire 33 at the wire clamp position.

[0037] The wire clamp wire trough 18 is a bag-type wire trough or a pre-twisted wire trough. It can also be in the form of a top-carrying wire trough according to actual needs. The bag-type wire trough is suitable for transmission lines in mountainous areas and low voltage levels.

[0038] Figure 6 The figure shows a pre-twisted wire duct, in which the adjustment pad 6 is connected to the pre-twisted wire clamp hardware 36 through the wire clamp pin 17. The pre-twisted wire clamp hardware 36 is a U-shaped structure. The pre-twisted wire clamp hardware 36 tightly covers the pre-twisted wire clamp wire duct 34, and the pre-twisted wire 35 passes through the pre-twisted wire clamp wire duct 34, and the power transmission line 33 passes through the pre-twisted wire 35. This connection method is suitable for environments with relatively strong vibrations such as plains and rivers.

[0039] Both ends of the spring hardware 1 7 and the spring hardware 2 15 are provided with a spring hardware straight section 24, and the spring hardware straight section 24 is provided with a thread, and the thread is connected with a fixing nut 23, and the fixing nut 23 and the gasket 25 connect the spring hardware straight section 24 with the adjustment pad 6, the adjustment connecting plate 1 8 or the adjustment connecting plate 2 14 respectively. The number of spring rings of the spring hardware 1 7 and the spring hardware 2 15 is 6 to 10 rings, which is obtained according to the force calculation and can be selected and used according to the specifications and weight of the transmission wire 33.

[0040] The present invention can be used for the installation and use of a single-conductor line, and can also be used for the installation and use of a multi-conductor line. According to different changes in the form of the adjustment connecting plate, the present invention has the following different embodiments.

[0041] Embodiment 1, as Figure 7 As shown, it is a schematic diagram of the use state of the double insulator double hanging point type. The adjustment connecting plate 1 8 is made into a triangular connecting plate 30, and two threaded holes are set at the lower end of the triangular connecting plate 30. Two sets of spring-type wire clamp hardware are used to form a double-split single-joint wire clamp hardware. The adjustment connecting plate 2 14 is changed to a rectangular connecting plate 31 (also known as an LF type connecting plate) to increase the stability between the two wires. This embodiment is suitable for use with heavier double-split wires. The hanging plate 1, the right-angle hanging plate 4, the adjustment pad 6, the adjustment connecting plate, the triangular connecting plate 30, and the rectangular connecting plate 31 are made of hot-dip galvanized steel.

[0042] Embodiment 2, as Figure 8 The figure shows a schematic diagram of the use state of a single insulator with double hanging points. The second connecting plate 14 is adjusted to be made into a triangular connecting plate 30, and two threaded holes are set at the lower end of the triangular connecting plate 30. Two sets of spring hardware 7 are used to connect two wire clamps and wire slots 18 respectively, so as to meet the use of lighter double split conductors.

[0043] Embodiment three, as Fig. 9 The figure is a schematic diagram of the use state of the double insulator single hanging point type. Based on the first embodiment, the rectangular connecting plate 31 is adjusted to a triangular connecting plate 30, and the obtuse end of the triangular connecting plate 30 is connected to the spring metal fitting 2 15. This embodiment is suitable for use with a large mass single conductor.

[0044] The present invention is not limited to the above embodiments. The connecting plates of the types such as triangular connecting plates, diamond connecting plates, inverted trapezoidal connecting plates, flat hexagonal connecting plates, and cross-type connecting plates can also be selected according to the distance of the insulator strings, the hanging line angle and other factors to meet the needs of different production and operation environments.

Claims

1. An insulator string capable of automatically consuming energy in a power transmission line, characterized in that: The invention comprises a hanging plate (1), a right-angle hanging plate (4), an adjustment pad (6), a spring hardware (7), a spring hardware (15), an adjustment connecting plate (8), an adjustment connecting plate (14), an insulator (12), a wire clamp hardware (16), and a wire clamp wire groove (18), wherein one end of the hanging plate (1) is connected to the right-angle hanging plate (4) via a connecting bolt (3), the right-angle hanging plate (4) is connected to the spring hardware (7) via an adjustment pad (6), and the spring hardware (7) is connected to the adjusting connecting plate (1). (8), the ball head hanging plate (9) is connected to the core rod (10) of the insulator (12), the other end of the insulator (12) is connected to the second spring hardware (15) via the ball head hanging plate (9) and the second adjustment connecting plate (14), the second spring hardware (15) is connected to the wire clamp hardware (16) via the adjustment pad (6) and the right angle hanging plate (4), the wire clamp hardware (16) is connected to the wire clamp wire groove (18) via the wire clamp pin (17), and the wire clamp wire groove (18) is fixed with a power transmission wire (33); The first adjustment link plate (8) and the second adjustment link plate (14) are respectively provided with an amplitude measuring device; The amplitude measuring device comprises an amplitude measuring pointer (20) and an amplitude measuring scale rod (21); the amplitude measuring pointer (20) is connected to the adjustment pad (6) via an amplitude measuring pointer mounting nail (26); the amplitude measuring scale rod (21) is connected to the first adjustment link plate (8) or the second adjustment link plate (14) via an amplitude measuring scale rod mounting nail (27); The first hanging plate (1) is one of a double-plate parallel hanging plate, a U-shaped hanging plate or a duckbill hanging plate; Both ends of the spring hardware one (7) and the spring hardware two (15) are provided with spring hardware straight sections (24), the spring hardware straight sections (24) are provided with threads, and the threads are connected with fixing nuts (23), and the number of spring rings of the spring hardware one (7) and the spring hardware two (15) is 6 to 10.

2. The insulator string capable of automatically consuming energy in a power transmission line according to claim 1, characterized in that: The other end of the hanging plate (1) is fixedly connected to the cross arm hanging member (28) via an installation pin (2).

3. The insulator string capable of automatically consuming energy in a power transmission line according to claim 1, characterized in that: An upper voltage-equalizing ring (11) and a lower voltage-equalizing ring (13) are respectively provided at both ends of the insulator (12).

4. The insulator string capable of automatically consuming energy in a power transmission line according to claim 1, characterized in that: The head ends of the connecting bolt (3) and the wire clamp latch pin (17) are provided with a closed pin (5).

5. The insulator string capable of automatically consuming energy in a power transmission line according to claim 1, characterized in that: The transmission wire (33) is provided with a wire aluminum tape (32) on the outside, and the wire aluminum tape (32) is fixed to the wire clamp groove (18) via a U-shaped bolt (19).

6. The insulator string capable of automatically consuming energy in a power transmission line according to claim 5, characterized in that: The wire clamp wire trough (18) is a bag-type wire trough or a pre-twisted wire trough.

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