A double-bundle conductor phase-to-phase spacer

Abstract

The utility model discloses a double split conductor phase spacing rod, including double split subconductor spacing rod, connecting bolt, deflection connecting plate, length adjusting plate and phase spacing rod body, the phase spacing rod body has at least one, if there are many, with connecting bolt series connection together, one end is connected with double split subconductor spacing rod through deflection connecting plate with connecting bolt, the other end is connected with length adjusting plate with connecting bolt, and length adjusting plate is connected with double split subconductor spacing rod again through deflection connecting plate with connecting bolt. The utility model not only can adapt to the transmission line of different phase spacing, also can be taken to the air unmanned installation by unmanned plane.

Description

Technical Field

[0001] This application relates to the technical field of devices for maintaining the spacing between overhead lines, and specifically to a double-split conductor phase spacer. Background Technology

[0002] Split conductors refer to a conductor installation method used in high-voltage or ultra-high-voltage transmission lines to suppress corona discharge and reduce line reactance. Each phase conductor consists of several smaller-diameter sub-conductors, with each group of sub-conductors spaced a certain distance apart. Double-split conductors refer to split conductors consisting of two sub-conductors, typically used in 220 kV transmission lines.

[0003] Because the two sub-conductors of a double-split conductor are very close together, they often vibrate under the influence of wind. Under special weather conditions and terrain, the conductor may experience rare and large-scale jumping, commonly known as galloping. This can cause conductor mixing, air insulation breakdown, and in severe cases, damage to line insulators, hardware, crossarms, or tower components. Therefore, spacers must be used to separate the sub-conductors of a double-split conductor in order to suppress mutual galloping between the sub-conductors.

[0004] For transmission lines with two circuits on the same tower, not only do the two split sub-conductors need to be separated, but adjacent different phases also need to be connected with spacers to stabilize the transmission line and prevent large-scale swaying.

[0005] Existing double-split phase-to-phase spacers, such as the double-split phase-to-phase spacer disclosed in Chinese Patent Application No. CN201820799516.0 on November 23, 2018, include two insulating core rods equipped with insulators, with a telescopic structure between the two insulating core rods; both insulating core rods have wire clamping structures at their outer ends. This type of double-split phase-to-phase spacer places the telescopic structure in the middle, making adjustment cumbersome. Furthermore, this type of spacer cannot be carried by drones to high altitudes for unmanned installation. Utility Model Content

[0006] In view of this, this application provides a double-split conductor phase spacer bar, which can not only adapt to transmission lines with different phase spacings, but can also be carried by drones for unmanned installation in the air.

[0007] According to one aspect of this application, one embodiment provides a double-split conductor phase-to-phase spacer, including a double-split sub-conductor spacer, connecting bolts, a deflection connecting plate, a length adjusting plate, and a phase-to-phase spacer body. There is at least one phase-to-phase spacer body, and if there are multiple bodies, they are connected in series with connecting bolts. One end of the spacer body is connected to the double-split sub-conductor spacer via the deflection connecting plate and the connecting bolt, and the other end is connected to the length adjusting plate via the connecting bolt. The length adjusting plate is then connected to the double-split conductor spacer via the deflection connecting plate and the connecting bolt.

[0008] In some embodiments, the double-split sub-conductor spacer includes a sub-conductor spacer body and a single bolt tightening assembly. The sub-conductor spacer body is a long strip plate with both ends bent into a semi-circular hook to the same side. The sub-conductor spacer body has a through hole at its center.

[0009] The single-bolt tightening assembly includes a bolt, a connecting rod seat, a pin, a connecting rod, a movable top block fixing seat, and a movable top block. The bolt passes through a through hole in the body of the sub-conductor spacer bar. The connecting rod seat is threaded onto the bolt. Two connecting rods are hinged to the connecting rod seat via pins. The two connecting rods are symmetrically located on both sides of the bolt. The connecting rods are hinged to the movable top block fixing seat via pins. The movable top block is fixed on the movable top block fixing seat.

[0010] In some embodiments, the movable top block fixing seat or the movable top block is provided with two limiting and guiding devices, so that the movable top block rests against the sub-conductor spacer body and faces the semi-circular hook of the sub-conductor spacer body.

[0011] In some embodiments, the two types of limiting and guiding devices include a guide rod limiting and guiding device and a sliding clamp limiting and guiding device;

[0012] The guide rod limiting guide device includes a guide rod and a limiting block. The limiting block is provided with two sliding holes. There are two guide rods that can slide through the limiting block. The limiting block is set on the sub-conductor spacer body. One end of the guide rod is fixed to the movable top block or the movable top block fixing plate.

[0013] The sliding clamp limiting and guiding device includes two sliding clamps, which are symmetrically fixed on the movable top block or the movable top block fixing plate. The two sliding clamps clamp the sub-conductor spacer body and can move along the limiting and guiding direction of the sub-conductor spacer body.

[0014] In some embodiments, a spring is threaded through the bolt in the single-bolt tightening assembly between the sub-conductor spacer body and the connecting rod seat.

[0015] In some embodiments, pads are provided in the arc-shaped groove of the movable top block and in the semi-circular hook of the sub-conductor spacer body. The pads are made of insulating rubber and have wire grooves.

[0016] In some embodiments, the deflection connecting plate includes a horizontal plate connected to the double-split conductor spacer and a vertical plate connected to the phase-to-phase spacer body or length adjustment plate. The vertical plate is disposed on the horizontal plate. Both the horizontal plate and the vertical plate have two connecting bolt holes. The outermost connecting bolt hole of the vertical plate is an arc-shaped hole, which can adjust the angle between the phase-to-phase spacer body or length adjustment plate and the double-split conductor spacer to suit various transmission lines.

[0017] In some embodiments, the length adjustment plate is elongated and made of metal. The length adjustment plate is provided with a plurality of equidistantly arranged adjustment bolt holes. By inserting connecting bolts into different adjustment bolt holes, the length can be finely adjusted.

[0018] In some embodiments, an equalizing ring is installed on the fitting at one end of the phase spacer body that connects to the deflection connecting plate or the length connecting plate.

[0019] In some embodiments, a lifting ring is fixed to one side of the deflection connecting plate on the dual-split conductor spacer bar that is not fixed with connecting bolts, and is used as a lifting point when the UAV is hoisted.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. The present invention relates to a double-split conductor phase spacer bar, which can be installed by drone for unmanned high-altitude live-line work, avoiding a series of problems caused by the need for personnel to climb to heights.

[0022] 2. The present invention provides a double-split conductor phase-to-phase spacer bar and a single-bolt tightening assembly for the double-split conductor spacer bar, which can quickly fix one end of the phase-to-phase spacer bar of the present invention onto the double-split conductor.

[0023] 3. The present invention provides a double-split conductor phase spacer bar with a deflection connecting plate that can flexibly adjust the angle between the phase spacer bar and the double-split sub-conductor spacer bar to adapt to various transmission lines. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model.

[0025] Figure 2 This is a schematic diagram of the structure of the double-split conductor spacer of this utility model.

[0026] Figure 3 This is a front view of the double-split conductor spacer of this utility model.

[0027] Figure 4 This is a schematic diagram of the deflection connecting plate of this utility model.

[0028] Figure 5This is a schematic diagram of the length adjustment plate of this utility model.

[0029] In the diagram: 1. Double-split sub-conductor spacer; 11. Sub-conductor spacer body; 12. Single bolt tightening assembly; 121. Bolt; 122. Connecting rod seat; 123. Pin; 124. Connecting rod; 125. Movable top block; 13. Guide rod limiting guide device; 131. Guide rod; 132. Limiting block; 14. Sliding clamp limiting guide device; 15. Pad; 2. Connecting bolt; 3. Deflection connecting plate; 31. Horizontal plate; 32. Vertical plate; 33. Connecting bolt hole; 4. Length adjusting plate; 41. Adjusting bolt hole; 5. Phase-to-phase spacer body. Detailed Implementation

[0030] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0031] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0032] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0033] Example 1:

[0034] Please refer to Figures 1-5 According to one aspect of this application, one embodiment provides a double-split conductor phase-to-phase spacer, including a double-split sub-conductor spacer 1, a connecting bolt 2, a deflection connecting plate 3, a length adjusting plate 4, and a phase-to-phase spacer body 5.

[0035] The double-split sub-conductor spacer 1 includes a sub-conductor spacer body 11 and a single bolt tightening assembly 12. The sub-conductor spacer body 11 is a long strip plate made of aluminum alloy, stainless steel or nickel-plated steel plate, with a width of 80-120mm and a length of 450-550mm. Both ends are bent into a semi-circular hook to the same side with a radius of 20mm. The center of the sub-conductor spacer body 11 has a through hole that allows an M20 bolt 121 to pass through.

[0036] The single-bolt tightening assembly 12 includes a bolt 121, a connecting rod seat 122, a pin 123, a connecting rod 124, and a movable top block 125. The bolt 121 is an M20 bolt that passes through a through hole in the sub-conductor spacer body 11. The connecting rod seat 122 is threaded onto the bolt 121. Two connecting rods 124 are hinged to the connecting rod seat 122 via the pin 123. The two connecting rods 124 are symmetrically located on both sides of the bolt 121. The connecting rods 124 are hinged to the movable top block 125 via the pin 123. A spring (not shown in the figure) passes through the bolt 121 between the sub-conductor spacer body 11 and the connecting rod seat 122.

[0037] The function of the spring is to compress the spring when the connecting rod seat 122 rises. When the spring is compressed to its limit, the connecting rod seat 122 can no longer rise, thereby limiting the movable top block 125. This prevents the double-split sub-conductor spacer from being deformed or bent by the hooks at both ends of the sub-conductor spacer body 11 during the hoisting process using a drone, which would otherwise be damaged.

[0038] The movable top block 125 is provided with two limiting and guiding devices, so that the movable top block 125 rests against the sub-conductor spacer body 11 and faces the semi-circular hook of the sub-conductor spacer body 11.

[0039] The two types of limiting and guiding devices include a guide rod limiting and guiding device 13 and a sliding clamp limiting and guiding device 14.

[0040] The guide rod limiting guide device 13 includes a guide rod 131 and a limiting block 134, which are made of stainless steel. The limiting block 132 is provided with two sliding holes. There are two guide rods 131 that can slide through the limiting block 132. The limiting block 132 is set on the sub-conductor spacer body 11. One end of the guide rod 131 is fixed to the movable top block 125.

[0041] The sliding clamp limiting guide device 14 includes two sliding clamps made of stainless steel plates. The two sliding clamps are symmetrically fixed on the movable top block 125. The two sliding clamps clamp the sub-conductor spacer body 11 and can move along the limiting guide along the sub-conductor spacer body 11.

[0042] A pad 15 is provided in the arc-shaped groove of the movable top block 125 and in the semi-circular hook of the sub-conductor spacer body 11. The pad 15 is made of insulating rubber and has a wire groove for clamping the sub-conductor.

[0043] The deflection connecting plate 3, made of aluminum alloy, stainless steel, or nickel-plated steel plate, includes a horizontal plate 31 connected to the double-split conductor spacer 1 and a vertical plate 32 connected to the phase spacer body 5 or length adjustment plate 4. The vertical plate 32 is mounted on the horizontal plate 31. Both the horizontal plate 31 and the vertical plate 32 have two connecting bolt holes 33. The outermost connecting bolt hole 33 of the vertical plate 32 is an arc-shaped hole, which can adjust the angle between the phase spacer body 5 or length adjustment plate 4 and the double-split conductor spacer 1 to suit various transmission line conditions. In some cases, the horizontal plate 31 and the vertical plate 32 are integrally formed, or they can be separately processed and then welded together. In some cases, there are two vertical plates 32, with the phase spacer body 5 or length adjustment plate 4 sandwiched in between.

[0044] The length adjustment plate 4 is elongated and made of aluminum alloy, stainless steel, or nickel-plated steel plate. It has several equidistantly arranged adjustment bolt holes 41. Fine-tuning of the length is achieved by inserting connecting bolts into different adjustment bolt holes 41. The length of the length adjustment plate 4 is typically no more than 0.6 meters and can be adjusted within a range of 0.5 meters.

[0045] There is at least one phase spacer bar body 5, and if there are multiple ones, they are connected together by connecting bolts 2.

[0046] The phase spacer body includes connecting fittings at both ends, a glass fiber epoxy resin core rod in the middle, a silicone rubber layer on the surface of the glass fiber epoxy resin core rod, and a silicone rubber skirt.

[0047] Since the voltage levels of double-split transmission lines are typically above 220kV, and the phase-to-phase spacing for 220kV lines is 5-6 meters (which can be increased to 6-7 meters in some special terrains or high-altitude areas), while the phase-to-phase spacing for 330kV lines is 6-8 meters and for 500kV lines it is 8-10 meters, two or more phase-to-phase spacers are usually connected in series to form a longer spacer. Of course, if some technical difficulties are overcome and the phase-to-phase spacer can be made longer, a single spacer can also be used.

[0048] One end of the phase spacer 5 connected in series is connected to the double-split conductor spacer 1 by a connecting bolt 2 through a deflection connecting plate 3, and the other end is connected to the length adjustment plate 4 by a connecting bolt 2. The length adjustment plate 4 is then connected to the double-split conductor spacer 1 by a connecting bolt 2 through the deflection connecting plate 3.

[0049] An equalizing ring (not shown in the figure) is installed on one end of the fitting that connects the phase spacer body 5 to the deflection connecting plate 3 or the length connecting plate 4.

[0050] When installation requires lifting by drone, a lifting ring is fixed to one side of each of the double-split conductor spacer bars 1 that is not fixed with the deflection connecting plate 3 by the connecting bolt 2, which is used as a lifting point when lifting by drone.

[0051] This utility model discloses a double-split conductor phase-to-phase spacer. During installation using a drone, a detachable lifting tool is installed on each of the two double-split sub-conductor spacers 1. This tool mainly consists of an electric wrench connected to bolt 121, which is essentially a motor with a socket and a remote-controlled battery pack powering the motor. The drone lifts the spacer to the double-split conductor, then controls the drone to place the double-split sub-conductor spacer 1 onto the two sub-conductors of the double-split conductor. The remote-controlled motor starts, tightens bolt 121, and fixes the double-split sub-conductor spacer 1 onto the double-split sub-conductor. The same method is then used to fix the other end of the double-split sub-conductor spacer 1 onto the double-split sub-conductor of the other phase, thus completing the fixation of the double-split conductor phase-to-phase spacer on the double-split transmission line. After fixation, the lifting tool can be detached and retrieved using a separation device.

[0052] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A double-split conductor phase spacer, characterized in that: It includes a double-split conductor spacer, connecting bolts, a deflection connecting plate, a length adjusting plate, and a phase-to-phase spacer body. There is at least one phase-to-phase spacer body. If there are multiple spacers, they are connected in series with connecting bolts. One end of the spacer body is connected to the double-split conductor spacer via the deflection connecting plate and the connecting bolt, and the other end is connected to the length adjusting plate via the connecting bolt. The length adjusting plate is then connected to the double-split conductor spacer via the deflection connecting plate and the connecting bolt.

2. The double-split conductor phase spacer according to claim 1, characterized in that: The double-split sub-conductor spacer includes a sub-conductor spacer body and a single bolt tightening assembly; The sub-conductor spacer body is a long strip plate with both ends bent into a semi-circular hook to the same side, and the center of the sub-conductor spacer body has a through hole. The single-bolt tightening assembly includes a bolt, a connecting rod seat, a pin, a connecting rod, a movable top block fixing seat, and a movable top block. The bolt passes through a through hole in the body of the sub-conductor spacer bar. The connecting rod seat is threaded onto the bolt. Two connecting rods are hinged to the connecting rod seat via pins. The two connecting rods are symmetrically located on both sides of the bolt. The connecting rods are hinged to the movable top block fixing seat via pins. The movable top block is fixed on the movable top block fixing seat.

3. The double-split conductor phase spacer according to claim 2, characterized in that: Two types of limiting and guiding devices are provided on the movable top block fixing seat or the movable top block.

4. The double-split conductor phase spacer according to claim 3, characterized in that: The two types of limiting and guiding devices include a guide rod limiting and guiding device and a sliding clamp limiting and guiding device; The guide rod limiting guide device includes a guide rod and a limiting block. The limiting block is provided with two sliding holes. There are two guide rods that can slide through the limiting block. The limiting block is set on the sub-conductor spacer body. One end of the guide rod is fixed to the movable top block or the movable top block fixing plate. The sliding clamp limiting and guiding device includes two sliding clamps, which are symmetrically fixed on the movable top block or the movable top block fixing plate, and the two sliding clamps clamp the body of the sub-conductor spacer.

5. A double-split conductor phase-to-phase spacer according to claim 2, characterized in that: In the single-bolt tightening assembly, a spring is threaded through the bolt between the sub-conductor spacer body and the connecting rod seat.

6. A double-split conductor phase spacer according to claim 2, characterized in that: A pad is provided in the arc-shaped groove of the movable top block and in the semi-circular hook of the sub-conductor spacer body. The pad is made of insulating rubber and has a wire groove.

7. The double-split conductor phase spacer according to claim 1, characterized in that: The deflection connecting plate includes a horizontal plate connected to the double-split conductor spacer and a vertical plate connected to the phase spacer body or length adjustment plate. The vertical plate is set on the horizontal plate. Both the horizontal plate and the vertical plate have two connecting bolt holes. The outermost connecting bolt hole of the vertical plate is an arc-shaped hole.

8. A double-split conductor phase spacer according to claim 1, characterized in that: The length adjustment plate is long and narrow, made of metal, and has several equally spaced adjustment bolt holes.

9. A double-split conductor phase-to-phase spacer according to claim 1, characterized in that: A pressure equalizing ring is installed on the fitting at one end of the phase spacer bar body that connects to the deflection connecting plate or the length connecting plate.

10. A double-split conductor phase spacer according to claim 1, characterized in that: On the side of the double-split conductor spacer bar where the deflection connecting plate is not fixed with connecting bolts, a lifting ring is fixed with connecting bolts.

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