CN206059036U - High pressure drainage thread hanging point device - Google Patents

Abstract

The utility model relates to a high-voltage drainage wire hanging point device, which is used for safely conducting the high voltage generated by a high-voltage generator, comprising a pull-wire drainage plate arranged above the high-voltage generator, a durable An insulator stay wire string, a voltage equalizing ball wire connected to the stay wire diversion plate, a wave trap and a suspension fitting located below the stay wire diversion plate and connected to the stay wire diversion plate, and connected to the pressure equalizing ball wire pipe bus. The high-voltage drainage line of the utility model passes through the middle of the pressure equalizing ball line, avoiding the problem of directly exposing the high-voltage drainage line to the outside, and the high-voltage drainage line can effectively ensure the transmission of UHV through the pipe bus The high voltage generator conducts the safe delivery of the voltage away.

Description

High voltage drainage line hanging point device

technical field

The utility model belongs to the technical field of high-voltage test equipment, in particular to a high-voltage drainage line hanging point device.

Background technique

With the comprehensive breakthrough of ±1100 kV UHV DC transmission technology, the transmission distance will exceed 5000 kilometers, and the transmission capacity will reach 12 million kilowatts. The development of UHV power grid has become the strategic focus of national energy development and clean development. Twelve key power transmission channels, including the high-voltage "four AC and four direct" projects, were included in the air pollution prevention and control action plan. Therefore, the development of UHV DC power grid is of great significance to the long-distance transmission of large-scale electric energy, the promotion of new energy grid connection, and the development of regional interconnected power grids.

The existing drainage wire suspension technology uses a combination of uprights or connecting rods and wire clamps to safely introduce UHV DC into the circuit or experimental device. For example, in the UHV DC test base, a high-voltage generator is arranged between the power diversion tower and the corona cage anchor tower. Usually, a column or a connecting rod is arranged on the structure of the high-voltage generator, and then the column or connecting rod Arrange high-voltage drainage wires etc. on it, through which the safe transmission from the high-voltage generator to the high-voltage line or the high-voltage experimental corona cage is realized, wherein the high-voltage drainage wires and other wires are fixed by wire clamps. The prior art has the following disadvantages: first, since the column or connecting rod is arranged on the high-voltage generator, its main support points are drawn from the high-voltage generator, and the force is placed on the high-voltage generator, resulting in instability of the high-voltage generator; Second, the exposed high-voltage drainage wire will age during the working process, and the wire is affected by the environment such as pollution, surface water droplets, and ice, which is prone to corona discharge.

Utility model content

Therefore, the technical problem to be solved by the utility model is to overcome the problem of instability caused by the force of the high-voltage generator in the prior art, so as to provide a method that can avoid the force of the high-voltage generator and can safely drain the UHV current through the UHV The high-voltage drainage line hanging point device sent out by the line.

In order to solve the above-mentioned technical problems, a high-voltage drainage wire hanging point device of the utility model is used to safely conduct the ultra-high voltage generated by the high-voltage generator, including a pull-wire drainage plate arranged above the high-voltage generator, and a first carrier The tension insulator stay wire string connected to the second carrier, the voltage equalizing ball wire connected to the stay wire diversion plate, the wave trap and the suspension fittings located below the stay wire diversion plate and connected to the stay wire diversion plate, and The pipe bus connected to the pressure equalizing ball wire, wherein the tension insulator stay wire string is connected to the stay wire diversion plate, and the high voltage current wire on the high voltage generator is connected to the The pull wire drain plate is connected to the high voltage drain line, and the high voltage drain line passes through the pressure equalizing ball line and is connected to the pipe busbar.

In one embodiment of the present utility model, the stay wire drainage plate is connected to the wave trap connecting plate through the first PT adjustment plate, and the wave trap and the suspension hardware are located below the wave trap connecting plate and connected to the wave trap connecting plate. The wave trap is connected to the board.

In one embodiment of the present invention, the wave trap connecting plate includes a hanging plate, a first PT adjustment plate connected to the hanging plate, a wave trap connecting frame connected to the first PT adjusting plate, and A weight plate arranged on the connecting frame of the wave trap and passing through the first PT adjustment plate.

In one embodiment of the present utility model, a first U-shaped hanging ring and a second U-shaped hanging ring are provided at the lower end of the pull wire drainage plate, wherein the first U-shaped hanging ring is connected with the first PT adjustment plate , the second U-shaped hanging ring is connected to the high-voltage drainage wire.

In one embodiment of the present invention, the outer ring of the tension insulator stay wire string is provided with a voltage equalizing ring, and the tension insulator stay wire string and the pressure equalizing ring are fixed on the Hoop evenly on board.

In one embodiment of the present invention, a plurality of continuous pressure equalizing balls are arranged on the pressure equalizing ball line.

In one embodiment of the present utility model, the tension insulator stay wire string includes a fourth U-shaped hanging ring connected to the stress point on the upper end of the first carrier or the second carrier, and the fourth U-shaped hanging ring The single and double type tie rods connected through the second PT adjustment plate and the synthetic insulator connected with the single and double type tie rods through a ball joint ring.

In one embodiment of the present invention, the included angle between the tension insulator stay wire string and the first carrier and the angle between the tension insulator stay wire string and the stress point at the upper end of the second carrier are both acute angles .

In one embodiment of the present utility model, the included angle between the stay wire string of the tension insulator and the stress point at the upper end of the first carrier is 80 degrees.

In one embodiment of the present invention, the included angle between the pull wire string of the tension insulator and the stress point at the upper end of the second carrier is 70 degrees.

Compared with the prior art, the above-mentioned technical solution of the utility model has the following advantages:

The high-voltage drainage wire hanging point device of the utility model makes full use of the limited space around the existing facilities such as high-voltage generators, not only makes the high-voltage generator body free from stress, but breaks away from the force-bearing mechanism of the high-voltage generator body in the prior art. Confinement, and solves the problem that the exposed high-voltage drainage wire is prone to corona discharge, which is conducive to saving costs.

Description of drawings

In order to make the content of the utility model easier to understand clearly, the utility model will be described in further detail below according to specific embodiments of the utility model in conjunction with the accompanying drawings, wherein

Fig. 1 is a perspective view of the connection between the first carrier and the second carrier of the present invention through the high-voltage drainage line hanging point device;

Fig. 2 is a top view of the connection between the first carrier and the second carrier of the present invention through the high-voltage drainage wire hanging point device;

Fig. 3a is a front view of the high-voltage drainage wire hanging point device described in the present invention;

Fig. 3b is a top view of the high-voltage drainage wire hanging point device described in the utility model;

Fig. 4a is a front view of the cable drainage plate described in the present invention;

Fig. 4b is a side view of the cable drainage plate described in the present invention;

Fig. 5 is a structural schematic diagram of the wave trap connecting plate described in the present invention;

Fig. 6 is a schematic diagram of the pressure equalizing ball line of the present invention.

Reference signs in the figure: 1-high-voltage drainage wire hanging point device, 10-guy wire drainage plate, 10A-the first U-shaped hanging ring, 10B-the second U-shaped hanging ring, 11-tension insulator pull string, 11A-the first Four U-shaped hanging rings, 11B-second PT adjustment plate, 11C-single and double tie rods, 11D-ball head hanging ring, 11E-synthetic insulator, 12-voltage equalizing ball wire, 121-pressure equalizing ball, 122-wedge Tension clamp, 13-wave trap and suspension fittings, 15-wave trap connecting plate, 15A-hanging plate, 15B-the first PT adjustment plate, 15C-wave trap connecting frame, 15D -weight hammer, 16-pressure equalizing ring, 17-uniform ring connection plate, 2-first carrier, 3-second carrier, 4-high voltage generator, 5-pipe bus, 6-high voltage drainage line.

detailed description

Please refer to Fig. 1 and Fig. 2 and Fig. 3a and Fig. 3b, the present embodiment provides a high-voltage drainage wire hanging point device 1, which is used to safely conduct the ultra-high voltage generated by the high-voltage generator 4, including the The stay wire drain plate 10 above the generator 4, the tension insulator stay wire string 11 connected to both the first carrier 2 and the second carrier 3, the pressure equalizing ball wire 12 connected to the stay wire drain board 11, and the stay wire drain The wave trap and suspension fittings 13 below the plate 10 and connected to the stay wire drainage plate 10, and the pipe busbar 5 connected to the pressure equalizing ball wire 12, wherein the tension insulator stay wire string 11 is connected to the stay wire drainage plate 10, the high-voltage current wire on the high-voltage generator 4 is connected to the pull-wire drain plate 10 through the wave trap and suspension fittings 13, and the pull-wire drain plate 10 is connected to the high-voltage drain wire 6, and the The high-voltage drainage wire 6 passes through the pressure equalizing ball wire 12 and is connected to the pipe bus 5 .

The above is the core technical solution described in the utility model. The high-voltage drainage wire hanging point device described in the utility model is used to safely conduct the UHV generated by the high-voltage generator 4, and includes a cable drainage plate 10, a tension insulator cable string 11 , pressure equalizing ball wire 12, wave trap and suspension fittings 13 and pipe busbar 5. Wherein the stay wire diversion plate 10 is arranged above the high voltage generator 4, one end of the tension insulator stay wire string 11 is connected to the first carrier 2 or the second carrier 3, and the tension insulator stay wire The other end of the string 11 is connected to the stay wire diversion plate 10, and the tension insulator stay wire string 11 can effectively isolate various high-voltage equipment and transfer the high voltage to the first carrier 2 or the second carrier 3 to avoid dangerous occurrence; the pressure equalizing ball line 12 is connected to the guy wire drainage plate 11, the wave trap and the suspension hardware 13 are located below the guy wire drain board 10 and connected to the guy wire drain board 10, through the The wave trap and the suspension fitting 13 can stop high-frequency signals and prevent interference signals. The high-voltage current line on the high-voltage generator 4 is connected to the pull wire drain plate 10 through the wave trap and the suspension fitting 13, Thereby, the problem of stress on the high-voltage generator 4 can be avoided, and the safety of the equipment can be ensured to the greatest extent; the pull wire drain plate 10 is connected to the high-voltage drain wire 6, and the high-voltage drain wire 6 passes through the pressure equalizing ball wire 12 It is connected with the pipe busbar 5 so that the high-voltage drainage wire 6 passes through the middle of the pressure equalizing ball wire 12, avoiding the problem of directly exposing the high-voltage drainage wire to the outside, thus effectively avoiding the high-voltage drainage wire from being damaged by the outside world. Factors such as environment and other factors such as wires being polluted, surface water droplets and ice-covered factors are likely to cause corona discharge problems. The high-voltage drainage line 6 transmits ultra-high voltage current through the tube bus 5, which can effectively ensure the transmission from the high-voltage generator 4 to The problem of safe transportation of the carrier ensures the safety of the equipment to the greatest extent.

The stay wire drainage plate 10 is connected to the wave trap connecting plate 15 through the first PT adjustment plate, and the wave trap and the suspension hardware 13 are located below the wave trap connecting plate 15 and connected to the wave trap connecting plate 15 connected. Wherein the wave trap and the suspension fitting 13 are provided with a drain wire hole, through which the high voltage current wire on the high voltage generator 4 can be connected to the pull wire drain plate 10, thereby avoiding the The problem of stress on the high-voltage generator 4 is described to ensure the safety of the equipment to the greatest extent. Specifically, the high-voltage current wire is connected to the wave trap connecting plate 15 through the drain wire hole, and the wave trap connecting plate 15 is connected to the pull wire drain plate 10, so that the high-voltage current wire Connected to the pull wire drain plate 10, avoiding the problem of stress on the high voltage generator 4, and ensuring the safety of the equipment to the greatest extent.

As shown in Figures 4a and 4b, a first U-shaped hanging ring 10A and a second U-shaped hanging ring 10B are provided at the lower end of the stay wire drainage plate 10, wherein the first U-shaped hanging ring 10A is adjusted with the first PT The plate is connected, and the second U-shaped hanging ring 10B is connected to the high-voltage drainage wire 6, thereby effectively avoiding the problem of stress on the high-voltage generator 4 .

As shown in Figure 5, the wave trap connecting plate 15 includes a hanging plate 15A, a first PT adjustment plate 15B connected to the hanging plate 15A, and a wave trap connecting frame connected to the first PT adjusting plate 15B 15C and the weight plate 15D which is arranged on the wave trap connecting frame 15C and passes through the first PT adjustment plate 15B. One end of the hanging plate 15A is connected to the pull wire drain plate 10, and the other end is connected to the first PT adjustment plate 15B, and there is an opening in the middle of the weight plate 15C that can penetrate into the first PT adjustment plate 15B, the center of gravity of the hanging point device of the high-voltage drainage line can be adjusted through the weight plate 15C, and the shaking of the whole device in the external environment can be reduced to the greatest extent, which is beneficial to ensure the stability of the whole device; the connecting frame of the wave trap The lower end of 15C is connected to the wave trap and suspension fittings 13, specifically, the wave trap and suspension fittings 13 are welded on the wave trap connecting frame 15C, thereby realizing the wave trap and suspension fittings 13. The metal fittings 13 are connected with the stay wire guide plate 10 .

The outer ring of the tension insulator stay string 11 is provided with a voltage equalizing ring 16, through which the voltage can be evenly distributed on the entire insulator stay string to avoid mutual voltage difference. Wherein, the equalizing ring 16 fixed on the pull wire string 11 of the tension insulator has an oval shape. The outer ring of the wave trap and the suspension fitting 13 is also sleeved with a pressure equalizing ring 16, through which the high voltage can be evenly distributed around the wave trap and the suspension fitting 13, ensuring There is no potential difference between each part, so as to achieve the effect of equalizing pressure. The pressure equalizing ring 16 fixed on the wave trap and the suspension fitting 13 is circular.

Both the tension insulator stay wire string 11 and the pressure equalizing ring 16 are fixed on the uniform ring connection plate 17 connected to the stay wire diversion plate 10, and the pressure equalizing ring 16 is connected to the equalizing pressure ring 16 by fixing nails. The ring connection plate 17 is connected so as to realize the connection between the tension insulator stay wire string 11 and the stay wire diversion plate 10, so as to avoid the danger caused by the transmission of high voltage current to the carrier. Wherein the guy wire drainage plate 10 is wedge-shaped, and the two upper ends of the guy wire drainage board 10 are used as the wire guy board, and the lower ends of the guy wire drainage board 10 are used as the drain board, thus solving the problem of the high-voltage drainage wire under the high wind environment. Stability issues, there is utilization to ensure the stability of the entire device. The stay wire diversion plate 10 is connected with the pressure equalizing ring plate 17, so that the tension insulator stay wire string 11 is connected with the stay wire drain board 10, and the tension insulator stay wire string 11 is respectively connected with the first The carrier 2 and the electrical second carrier 3 are connected, so as to avoid the danger caused by the transmission of high-voltage current to the carrier. Specifically, the two ends above the wire diversion plate 10 are connected to the pressure equalizing ring plate 17 through a third U-shaped hanging ring, and rubber is installed between the third U-shaped hanging ring and the pipe busbar 5 . Pads, thereby avoiding abrasion of the pipe busbars.

In this embodiment, the pressure equalizing ring plate 17 is rectangular, and there are two sets of first fixing holes with two holes in the middle of the pressure equalizing ring plate 17, which are used to connect and fix the oval pressure equalizing ring 16 , the four corners of the pressure equalizing ring plate 17 each have a second fixing hole, the distance between the holes on the long side of the pressure equalizing ring plate 17 is 300 mm, the distance between the holes on the short side is 100 mm, and the plate thickness is 18 mm; The two second fixing holes on one side of the plate 17 are connected to the wave trap connecting plate 15 through a U-shaped hanging ring, and the two second fixing holes on the other side of the pressure equalizing ring connecting plate 17 are connected through a U-shaped hanging ring It is connected with the insulator wire pull string 11.

As shown in Figure 6, the pressure equalizing ball line 12 is provided with a plurality of continuous pressure equalizing balls 121, through which the pressure equalizing ball 121 can not only ensure the smoothness of the pressure equalizing ball line 12, but also prevent the The discharge phenomenon occurs in the pressure equalizing ball wire 12; one end of the pressure equalizing ball wire 12 is connected with the pull wire drain plate 10 through the first U-shaped bolt and wedge-shaped tension clamp 122, and the high voltage drain wire 6 is connected to the The pressure equalizing ball wire 12 is strung through the middle, which not only effectively avoids the problem of stress on the high voltage generator 4, but also avoids the problem of directly exposing the high voltage drainage wire; the other end of the pressure equalizing ball wire 12 passes through the first Two U-shaped bolts are connected to the pipe busbar 5, and the transmission of UHV current through the pipe busbar 5 can effectively ensure the safe transmission from the high voltage generator 4 to the carrier.

The tension insulator stay wire string 11 includes a fourth U-shaped hanging ring 11A connected to the stress point on the upper end of the first carrier 2 or the second carrier 3, and the fourth U-shaped hanging ring 11A passes through the The single and double tie rods 11C connected to the second PT adjustment plate 11B and the composite insulator 11E connected to the single and double tie rods 11C through the ball joint ring 11D. Specifically, one end of the fourth U-shaped hanging ring 11A is connected to the second PT adjustment plate 11B through a turnbuckle, and the other end is fixed on the first carrier 2 or the second carrier 3 through a connecting plate, Wherein, a short angle steel is added on the connecting plate, a total of 2 pieces, and the connecting plate has a plurality of bolts, and the connecting plate is fixed on the first carrier 2 or the second carrier 3 through the angle steel. One end of the composite insulator 11E is connected to the single and double tie rods 11C, and the other end is connected to the pressure equalizing ring plate 17 through a U-shaped hanging ring, and the first carrier 2 is realized through the strain insulator string 11. Or the connection between the second carrier 3 and the wire guide plate 10 . When installing, pay attention to the direction of the umbrella group of the composite insulator 11E and the suspension live end facing downward, and the strength of the fittings is configured according to the strength of the insulator at 160KN.

In order to ensure that the hanging point formed by the tension insulator stay wire string 11 is as stable as possible and ensure the stability of the hang point, the included angle between the tension insulator stay wire string 11 and the stress point at the upper end of the first carrier 2 and the The included angles between the tension insulator stay wire string 11 and the stress point at the upper end of the second carrier 3 are all acute angles. Specifically, when the angle between the tension insulator stay wire string 11 and the stress point at the upper end of the first carrier 2 is 80 degrees, the stability at the hanging point is high; the tension insulator stay wire string 11 and the When the included angle of the stress point at the upper end of the second carrier 3 is 70 degrees, the stability at the hanging point is high.

In this embodiment, the first carrier 2 can be a power diversion tower, the second carrier 3 can be a corona cage anchor tower, and the pipe bus is passed between the power diversion tower and the corona cage anchor tower 5 connected. The combination of suspension fittings and insulator cable strings is used to safely isolate the high-voltage drain line, and the existing facilities such as the anchor tower and the drain tower on the side of the UHV corona cage and the limited space in the middle are fully utilized. While utilizing the existing equipment, the cost is saved. Specifically, as shown in Fig. 3b, four sets of suspension strings are arranged between the power diversion tower and the corona cage anchor tower, and each set of suspension strings includes a corresponding resistant An insulator stay wire string 11, wherein two groups of suspension strings are suspended at the position of 27m height from the ground of the power diversion tower 2; another two groups of suspension strings are suspended at the tower body of the corona cage anchor tower 3 30m above the ground.

In summary, the technical solution described in the utility model has the following advantages:

1. The high-voltage drainage wire hanging point device described in the utility model includes a wire drainage plate, a tension insulator wire string, a pressure equalizing ball wire, a wave trap, a suspension fitting, and a pipe busbar. Wherein the stay wire diversion plate is arranged above the high voltage generator, one end of the tension insulator stay wire string is connected to the first carrier or the second carrier, and the other end of the tension insulator stay wire string is connected to the second carrier The stay wires are connected to the drain board, and various high-voltage equipment can be effectively isolated through the stay wire strings of the tension insulators to transmit high voltage to the first carrier or the second carrier to avoid danger; the voltage equalizing ball wire Connected with the guy wire drainage plate, the wave trap and suspension fittings are located below the guy wire drainage plate and connected with the guy wire drainage plate, the high frequency signal can be blocked by the wave trap and suspension fittings, preventing interference signal, the high-voltage current wire on the high-voltage generator is connected to the pull-wire diversion plate through the wave trap and suspension fittings, thereby avoiding the problem of stress on the high-voltage generator and ensuring the safety of the equipment to the greatest extent. Safety; the pull wire drainage plate is connected to the high-voltage drainage line, and the high-voltage drainage line passes through the pressure equalizing ball line to connect with the pipe bus, so that the high-voltage drainage line passes through the middle of the pressure equalizing ball line, The problem of directly exposing the high-voltage drainage wire is avoided, thereby effectively avoiding the problem that the high-voltage drainage wire is prone to corona discharge due to factors such as external environment and other factors such as wires being polluted, surface water droplets, and ice coating. The transmission of ultra-high voltage current through the tube bus can effectively ensure the safe transmission from the high-voltage generator to the carrier, and ensure the safety of the equipment to the greatest extent.

2. The high-voltage drainage line hanging point device described in the present invention, the wave trap connecting plate includes a hanging plate, a first PT adjustment plate connected to the hanging plate, and a wave damping plate connected to the first PT adjustment plate. The connecting frame of the wave trap and the weight piece which is arranged on the connecting frame of the wave trap and passes through the first PT adjusting plate. Wherein, one end of the hanging plate is connected with the pull wire drainage plate, and the other end is connected with the first PT adjustment plate, and there is an opening in the middle of the weight plate that can penetrate into the first PT adjustment plate, through the The heavy hammer can adjust the center of gravity of the hanging point device of the high-voltage drainage line, and minimize the shaking of the whole device in the external environment, which is beneficial to ensure the stability of the whole device.

Apparently, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in various forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the scope of protection of the utility model.

Claims (10)

1. A high-voltage drainage wire hanging point device, which is used to safely conduct the ultra-high voltage produced by the high-voltage generator, is characterized in that: it includes a pull-wire drainage plate arranged above the high-voltage generator, and a first carrier and a second carrier The tension insulator stay wire strings connected to each other, the pressure equalizing ball wire connected to the stay wire diversion plate, the wave trap and the suspension hardware located below the stay wire diversion plate and connected to the stay wire diversion plate, and the equalizing Pipe busbars connected with pressure ball wires, wherein the tension insulator stay wire string is connected to the stay wire drainage plate, and the high voltage current wire on the high voltage generator is connected to the stay wire drainage through the wave trap and suspension fittings The pull wire drain plate is connected to the high-voltage drain line, and the high-voltage drain line passes through the pressure equalizing ball line and is connected to the pipe busbar. 2. The hanging point device of high-voltage drainage wire according to claim 1, characterized in that: the wire drainage plate is connected to the connecting plate of the wave trap through the first PT adjustment plate, and the wave trap and the suspension hardware are located at the Below the connecting plate of the wave trap and connected with the connecting plate of the wave trap. 3. The hanging point device for high-voltage drainage wire according to claim 2, characterized in that: the wave trap connecting plate includes a hanging plate, a first PT adjustment plate connected to the hanging plate, and a first PT adjusting plate connected to the hanging plate. The connecting frame of the wave trap connected with the adjusting plate and the weight piece arranged on the connecting frame of the wave trap and passing through the first PT adjusting plate. 4. The hanging point device of high-voltage drainage wire according to claim 2, characterized in that: the lower end of the wire drainage plate is provided with a first U-shaped hanging ring and a second U-shaped hanging ring, wherein the first U-shaped hanging The ring is connected to the first PT adjustment plate, and the second U-shaped hanging ring is connected to the high-voltage drainage wire. 5. The hanging point device for high-voltage drain wires according to claim 1, characterized in that: the outer ring of the tension insulator stay wire string is provided with a voltage equalizing ring, and the tension insulator stay wire string and the voltage equalizing ring are both It is fixed on the uniform ring-connected plate connected with the stay wire drainage plate. 6. The hanging point device for high-voltage drainage wires according to claim 1, characterized in that: the pressure equalizing ball line is provided with a plurality of continuous pressure equalizing balls. 7. The hanging point device for high voltage drain wire according to claim 1, characterized in that: the tension insulator stay wire string includes a fourth U-shaped hanging ring connected to the stress point at the upper end of the first carrier or the second carrier , the single and double tie rods connected with the fourth U-shaped hanging ring through the second PT adjustment plate, and the composite insulator connected with the single and double tie rods through the ball joint hanging ring. 8. The high-voltage drainage wire hanging point device according to claim 1 or 7, characterized in that: the angle between the tension insulator string and the stress point at the upper end of the first carrier and the tension insulator string The included angles with the stress point on the upper end of the second carrier are all acute angles. 9. The hanging point device for high-voltage drain wires according to claim 8, characterized in that: the included angle between the pull string of the tension insulator and the stress point at the upper end of the first carrier is 80 degrees. 10. The hanging point device for high-voltage drain wires according to claim 8, characterized in that: the included angle between the tension insulator pull wire string and the stress point at the upper end of the second carrier is 70 degrees.