A wine glass tower with an insulated cross arm structure and a method of retrofitting the same

Abstract

The application belongs to the technical field of wine glass tower transformation, and particularly relates to a wine glass tower with an insulating cross arm structure and a transformation method thereof, which comprises a tower body, a ground wire support, a composite insulating cross arm, and ground wires and conductive wires, a plurality of node supports are arranged at the original angle steel cross arm of the tower body and connected with the tower body, the composite insulating cross arm is installed between the node support supports on the two sides and connected with each other to form a whole, the ground wire support is installed at the upper end of the node support, and the ground wire supports on the two sides are fixedly connected through a truss beam. In the application, the original angle steel cross arm is replaced by the node support and the composite insulating cross arm with a novel structure, the suspension insulator is cancelled, and the ground wire support is arranged, so that the lightning protection, wind deviation prevention, ice covering prevention, and contamination prevention capability of the composite insulating cross arm tower after the transformation are effectively improved, the safety distance of the conductive wire to the ground is correspondingly increased, and the overall safety is obviously improved.

Description

Technical Field

[0001] This invention relates to a wine glass tower, specifically to a wine glass tower with an insulating crossbeam structure and a method for modifying it. Background Technology

[0002] In overhead transmission lines, especially high-voltage and ultra-high-voltage lines, the safety and stability are particularly important due to their large power transmission capacity, long power supply distance, and wide coverage. In traditional transmission line support structures, such as... Figure 1 The tower head structure of the original wine glass tower shown includes the lower section of the tower body (10), the upper section of the tower body (20), the ground wire crossarm (30), the middle crossbeam (40), the middle phase V-shaped suspension string (50), the side phase angle steel crossarm (60) and the side phase suspension string (70), where (01a), (01b) and (01c) are the seventh node, the eighth node and the ninth node of the lower section of the tower body, respectively. The crossarm, one of the key support components of its transmission conductor, is a metal angle steel type combined crossarm plus suspension insulator string structure. Its line mechanical bearing capacity is good, but there are certain problems in terms of durability and electrical stability. It is susceptible to problems such as lightning strikes, pollution, wind deflection and icing flashover.

[0003] Composite insulated crossarms possess electrical insulation, lightweight yet high strength, and high corrosion resistance, significantly improving the line's lightning protection, wind deflection prevention, icing prevention, and pollution prevention capabilities, thereby increasing the utilization rate of the line corridor. Compared with traditional iron crossarms, they have obvious advantages in disaster prevention and mitigation, and line operation and maintenance. However, due to the unique structure and dimensions of the goblet tower, the composite insulated crossarm is incompatible with the original tower nodes. To address this issue, this invention proposes a new technical solution: by designing a reasonably structured composite insulated crossarm to renovate old goblet towers, it is compatible with the original tower structure while meeting mechanical and electrical performance requirements. Summary of the Invention

[0004] The main objective of this disclosure is to provide a wine glass tower with an insulated crossarm structure and its modification method. The original angle steel crossarm is replaced by a multi-node support and a new type of composite insulated crossarm, eliminating the suspension insulator. At the same time, a ground wire support is erected to ensure that the electrical performance of the tower head and the mechanical performance of the entire tower meet the requirements. The ground wire supports on the left and right sides are connected by a truss beam to ensure structural stability. This effectively solves the problems raised by the inventors in the above-mentioned background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A wine glass tower with an insulated crossarm structure includes a lower tower section, an upper tower section, a ground wire support, a truss beam, a composite insulated crossarm, a ground wire, and conductors. The upper part of the upper tower section is supported by multi-node supports, which are connected to the upper tower section via second and third nodes. The composite insulated crossarm is installed between the multi-node supports on both sides and connected to each other as a whole. The ground wire support is installed at the upper end of the multi-node supports, and the ground wire supports on both sides are fixedly connected by the truss beam. The ground wire is installed at the hanging point of the ground wire support, and the conductors are installed at the hanging points of the middle phase crossarm and the side phase crossarm of the composite insulated crossarm.

[0007] Preferably, the composite insulating crossarm includes a middle-phase insulating crossarm between the multi-node supports on the left and right sides and a side-phase insulating crossarm outside the multi-node supports. The side-phase insulating crossarm includes a side-phase insulating tie rod and a side-phase insulating pressure rod. The side-phase insulating tie rod is hinged to the multi-node support at the first node via PT fittings, and its length is adjustable. The side-phase insulating pressure rod is bolted to the multi-node support at the second node. The middle-phase insulating crossarm includes a middle-phase insulating tie rod and a middle-phase insulating pressure rod. The middle-phase insulating tie rod is hinged to the multi-node support at the fourth node via PT fittings, and its length is adjustable. The middle-phase insulating tie rod and the middle-phase insulating pressure rod are bolted to the middle-phase crossarm hanging point via fittings.

[0008] Preferably, the side-phase insulating tie rod and the side-phase insulating pressure rod are in the form of a three-dimensional triangular structure and are arranged horizontally, while the middle-phase insulating tie rod and the middle-phase insulating pressure rod are in the form of a symmetrical double three-dimensional triangular structure and are arranged horizontally.

[0009] Preferably, the insulating pressure bar is a composite material core with a uniform cross-section and an outer layer covered with a silicone rubber umbrella skirt structure. The composite material core is a solid composite material rod or a filled core rod.

[0010] Preferably, the angle between the line connecting the grounding bracket hanging point and the side phase crossarm hanging point and the vertical line is less than or equal to an angle.

[0011] Preferably, a single string or parallel double string clamps are suspended at the crossarm hanging point of the side phase, eliminating the need for suspension insulators and significantly reducing the swing amplitude of the side phase conductors.

[0012] Preferably, a single string or two parallel strings are suspended at the middle phase crossarm hanging point, eliminating the V-shaped insulator structure and significantly reducing the swing amplitude of the middle phase conductor.

[0013] A method for modifying a wine glass tower with an insulating crossarm structure includes the following modification steps:

[0014] S1: Loosen the conductors and ground wires, fix the side phase conductors and ground wires at the seventh and ninth nodes, fix the middle phase conductors at the eighth node, and remove the ground wire crossarm, truss beam and angle steel crossarm.

[0015] S2: Design multi-node supports, truss beams, and ground wire supports. Through electrical calculations, determine the structural dimensions of multi-node supports and ground wire supports to ensure that the angle between the line connecting the ground wire support hanging point and the side phase crossarm hanging point and the vertical line is less than or equal to the required angle. Through mechanical calculations, determine the structural dimensions of the truss beams to meet the requirements of the tower's operating conditions.

[0016] S3: The multi-node support is an assembled structure. The parts are lifted separately to the upper part of the tower body and connected by bolts at the second node, third node, etc. Similarly, the truss beam and ground wire bracket assembly are lifted separately and assembled with the multi-node supports on the left and right sides into a stable structure. The ground wire is then lifted to the ground wire bracket hanging point for installation.

[0017] S4: Assemble the middle phase insulated crossarm on the ground. The middle phase insulated tie rod and the middle phase insulated pressure rod are assembled at the middle phase crossarm hanging point through the hanging point hardware. The connecting bolts of each node are in a semi-tightened state. The whole structure is lifted to the upper part of the tower. The middle phase insulated pressure rod is connected and tightened to the multi-node support through the third node, the sixth node, etc. Adjust the length of the PT hardware on the middle phase insulated tie rod and connect it with the hinges of the fourth node, the fifth node, etc. to keep the middle phase insulated tie rod under tension. Lift the middle phase conductor to the middle phase crossarm hanging point and tighten it with parallel double line clamps. The V-type insulator is removed and the conductor is correspondingly raised to the ground distance.

[0018] S5: Assemble the side phase insulation crossarm on the ground, with the bolts at each node in a semi-tightened state. Lift the entire structure to the outer side of the upper section of the tower. Tighten the bolts of the side phase insulation pressure rod and multi-node support at the second node and other locations. Adjust the length of the PT hardware on the side phase insulation tie rod and connect it to the hinge at the first node and other locations to keep the side phase insulation tie rod under tension. Lift the side phase conductor to the side phase crossarm hanging point and tighten it with parallel double-line clamps. Eliminate the suspension insulator and increase the conductor distance to the ground by one insulator height.

[0019] Preferably, the composite insulating crossarm is designable, and the designability is such that, provided the electrical and mechanical performance requirements are met, the insulation length of the side-phase insulating tie rod and the side-phase insulating pressure rod can be increased or decreased according to the modification requirements.

[0020] In view of this, compared with the prior art, the beneficial effects of the present invention are:

[0021] (i) In this application, in response to the problems of lightning strikes, pollution, wind deflection and icing flashover that are prone to occur in old wine glass towers, a new composite insulated crossarm modification scheme suitable for wine glass tower structures is developed based on the mechanical and electrical characteristics of composite insulated crossarm components to improve line safety; the composite insulated crossarm of the new modification scheme is designable and the lightning resistance level can be increased by adjusting the insulation gap length.

[0022] (ii) In this application, the new scheme of horizontal arrangement of composite insulation crossarms is less prone to dirt accumulation and will not form ice shards running from top to bottom, thus improving the line's ability to prevent pollution and icing.

[0023] (iii) In this application, the composite insulated crossarm of the new scheme is directly connected to the conductor through clamps and hardware, eliminating the suspension insulator and eliminating wind-induced flashover. Attached Figure Description

[0024] Figure 1 The diagram shown is a schematic of the original wine glass tower head structure;

[0025] Figure 2 The image shown is a schematic diagram of the wine glass tower after the modification plan;

[0026] Figure 3 The image shown is a three-dimensional view of the side-phase composite insulation crossarm;

[0027] Figure 4 The image shown is a three-dimensional view of the middle-phase composite insulation crossarm.

[0028] icon:

[0029] 01-Lower section of tower body; 02-Upper section of tower body; 03-Ground wire support; 03a-Ground wire support hanging point; 04-Truss beam; 05-Multi-node support; 05a-First node; 05b-Second node; 05c-Third node; 05d-Fourth node; 05e-Fifth node; 05f-Sixth node; 06-Middle phase insulating tie rod; 07-Middle phase insulating pressure rod; 07a-Middle phase crossarm hanging point; 08-Side phase insulating tie rod; 09-Side phase insulating pressure rod; 09a-Side phase crossarm hanging point. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figure 1-4 The present invention provides the following embodiments:

[0032] A wine glass tower with an insulated crossarm structure includes a lower section 01, an upper section 02, a ground wire support 03, a truss beam 04, a composite insulated crossarm, a ground wire, and conductors. A multi-node support 05 is erected on the upper part of the upper section 02 and connected to the upper section 02 through a second node 05b and a third node 05c. The composite insulated crossarm is installed between the multi-node supports 05 on both sides and connected to each other as a whole. The ground wire support 03 is installed at the upper end of the multi-node support 05, and the ground wire supports 03 on both sides are fixedly connected by the truss beam 04. The ground wire is installed at the hanging point 03a of the ground wire support, and the conductors are installed at the hanging points 07a of the middle phase crossarm and 09a of the side phase crossarm of the composite insulated crossarm.

[0033] Specifically, the composite insulated crossarm includes a middle-phase insulated crossarm between the multi-node supports 05 on both the left and right sides and a side-phase insulated crossarm outside the multi-node supports 05. The side-phase insulated crossarm includes a side-phase insulated tie rod 08 and a side-phase insulated pressure rod 09. The side-phase insulated tie rod 08 is hinged to the multi-node support 05 at the first node 05a via PT fittings, and its length is adjustable. The side-phase insulated pressure rod 09 is bolted to the multi-node support 05 at the fourth node 05d. The middle-phase insulated crossarm includes a middle-phase insulated tie rod 06 and a middle-phase insulated pressure rod 07. The middle-phase insulated tie rod 06 is hinged to the multi-node support 05 at the fourth node 05d via PT fittings, and its length is adjustable. The middle-phase insulated tie rod 06 and the middle-phase insulated pressure rod 07 are bolted to the middle-phase crossarm hanging point 07a via fittings.

[0034] Specifically, the side-phase insulating tie rod 08 and the side-phase insulating pressure rod 09 form a three-dimensional triangular structure and are arranged horizontally. The middle-phase insulating tie rod 06 and the middle-phase insulating pressure rod 07 form a symmetrical double three-dimensional triangular structure and are arranged horizontally. The two side-phase insulating tie rods 08 and the two side-phase insulating pressure rods 09 are connected by end-mounted hardware. The insulating tie rods and the end-mounted hardware are hinged and form a certain angle. The insulating pressure rods and the end-mounted hardware are fastened by bolts, forming a horizontally arranged triangle. The lower end of the end-mounted hardware connects to the wire clamp and the conductor. The overall structure is a three-dimensional triangular structure (see appendix). Figure 3 Four middle-phase insulating tie rods (06) and four middle-phase insulating pressure rods (07) are connected at the middle-phase hanging point hardware. The four insulating tie rods are hinged to the connecting plate of the middle-phase hanging point hardware, forming a certain angle and being symmetrical to each other. The four insulating pressure rods are fastened to the middle-phase hanging point hardware with bolts, forming a symmetrical triangular horizontal arrangement. The hanging hole at the lower end of the hanging point hardware is connected to the wire clamp and conductor. The whole structure is a symmetrical double-three-dimensional triangle (see appendix). Figure 4 ).

[0035] Specifically, the insulating pressure rod has a composite material core with a uniform cross-section and an outer layer of silicone rubber umbrella skirt structure. The composite material core is a solid composite material rod or a filled core rod. The insulating pressure rod and the insulating tie rod both have a composite material core with a uniform cross-section and an outer layer of silicone rubber umbrella skirt structure with end pressing fittings. The composite material core is a solid composite material rod or a filled core rod. The cross-sectional dimensions of the composite material core used in the insulating pressure rod are much larger than those of the core used in the insulating tie rod to ensure the stability of the insulating pressure rod under pressure.

[0036] Specifically, the angle between the line connecting ground wire bracket hanging point 03a and side phase crossarm hanging point 09a and the vertical line is less than or equal to angle α (see appendix). Figure 2 ).

[0037] Specifically, a single string or parallel double string clamps are suspended on the side phase crossarm suspension point 09a, eliminating the suspension insulator and significantly reducing the swing amplitude of the side phase conductor. The hanging plate on the side phase crossarm suspension point 09a has 3 hanging holes. When using a single string clamp, it is hung at the middle hanging hole; when using a double string clamp, it is hung at the two side hanging holes. The extra hanging holes are used as spare holes. By eliminating the suspension insulator, the distance between the conductor and the hanging hole is greatly shortened, greatly reducing the wind-induced swing amplitude of the side phase conductor.

[0038] Specifically, the hanging plate at the middle phase crossarm hanging point 07a has three hanging holes located on the center plane of the tower. A single string or parallel double string is suspended at the middle phase crossarm hanging point 07a, eliminating the V-shaped insulator structure and significantly reducing the swing amplitude of the middle phase conductor.

[0039] A method for modifying a wine glass tower with an insulating crossarm structure includes the following modification steps:

[0040] S1: Loosen the conductor and ground wire, fix the side phase conductor and ground wire at the seventh node 01a and the ninth node 01c, fix the middle phase conductor at the eighth node 01b, and remove the ground wire crossarm 30, truss beam 04 and angle steel crossarm.

[0041] S2: Design multi-node support 05, truss beam 04, and ground wire support 03. Through electrical calculations, determine the structural dimensions of multi-node support 05 and ground wire support 03 to ensure that the angle between the line connecting the ground wire support hanging point 03a and the side phase crossarm hanging point 09a and the vertical line is less than or equal to a. Through mechanical calculations, determine the structural dimensions of truss beam 04 to meet the requirements of tower operation conditions.

[0042] S3: The multi-node support 05 is an assembled structure. The parts are lifted separately onto the upper part of the tower body 02 and connected by bolts at the second node 05b, the third node 05c, etc. Similarly, the truss beam 04 and the ground wire bracket 03 assembly are lifted separately and assembled with the multi-node supports 05 on the left and right sides into a stable structure. The ground wire is then lifted to the ground wire bracket hanging point 03a for installation.

[0043] S4: Assemble the middle phase insulated crossarm on the ground. The middle phase insulated tie rod 06 and the middle phase insulated pressure rod 07 are assembled at the middle phase crossarm hanging point 07a through the hanging point hardware. The connecting bolts of each node are in a semi-tightened state. The whole assembly is lifted to the upper part of the tower body 02. The middle phase insulated pressure rod 07 is connected and tightened to the multi-node support 05 through the third node 05c, the sixth node 05f, etc. Adjust the length of the PT hardware on the middle phase insulated tie rod 06 and connect it with the hinges of the fourth node 05d, the fifth node 05e, etc., so that the middle phase insulated tie rod 06 is kept under tension. Lift the middle phase conductor to the middle phase crossarm hanging point 07a and tighten it with parallel double-line clamps. The V-type insulator is removed, and the conductor is correspondingly raised to the ground distance.

[0044] S5: Assemble the side phase insulated crossarm on the ground, with the bolts at each node in a semi-tightened state. Lift the entire assembly to the outside of the upper section 02 of the tower body. Tighten the bolts of the side phase insulated pressure rod 09 and the multi-node support 05 at the fourth node 05d, etc. Adjust the length of the PT hardware on the side phase insulated tie rod 08 and connect it with the hinge at the first node 05a, etc., so that the side phase insulated tie rod 08 is kept under tension. Lift the side phase conductor to the side phase crossarm hanging point 09a and tighten it with parallel double-line clamps. Remove the suspension insulator and increase the conductor distance to the ground by one insulator height.

[0045] Specifically, the composite insulated crossarm is designable, and the designability is such that, provided the electrical and mechanical performance requirements are met, the insulation length of the side phase insulated tie rod 08 and the side phase insulated pressure rod 09 can be increased or decreased according to the modification requirements.

[0046] In this embodiment: the conductors and ground wire are loosened; the side-phase conductors and ground wire are fixed at the seventh node 01a and the ninth node 01c; the middle-phase conductor is fixed at the eighth node 01b; the ground wire bracket, truss beam, and angle steel crossarm are removed (see attached). Figure 1 ;like Figure 2 As shown, a multi-node support 05, a truss beam 04, and a ground wire bracket 03 are designed. Electrical calculations determine the structural dimensions of the multi-node support 05 and the ground wire bracket 03 to ensure that the angle between the line connecting the ground wire bracket hanging point 03a and the side phase crossarm hanging point 09a and the vertical line is less than or equal to α. Mechanical calculations determine the structural dimensions of the truss beam 04 to meet the tower's operating requirements. The multi-node support 05 is an assembled structure; components are lifted separately onto the upper section 02 of the tower body and connected by bolts at the second node 05b, third node 05c, etc. Similarly, the truss beam 04 and the ground wire bracket 03 are lifted separately and assembled with the multi-node supports 05 on both sides to form a stable integrated structure. The ground wire is then lifted to the ground wire bracket hanging point 03a for installation. The composite insulated crossarm is assembled on the ground (see attached diagram). Figure 4The middle phase insulating tie rod 06 and the middle phase insulating pressure rod 07 are assembled at the middle phase crossarm hanging point 07a using hanging point hardware. All node connecting bolts are tightened. Lifting points are set on the end hardware of the four insulating pressure rods. The entire assembly is lifted to above the upper section 02 of the tower body. During lifting, the middle phase insulating pressure rod 07 is connected and tightened to the multi-node support 05 via the third node 05c, the sixth node 05f, etc. The length of the PT hardware on the middle phase insulating tie rod 06 is adjusted and connected to the hinges at the fourth node 05d, the fifth node 05e, etc., to keep the middle phase insulating tie rod 06 under tension. The angle between the insulating pressure rod and the horizontal plane is 0-5°. The middle phase conductor is lifted to the middle phase crossarm hanging point 07a and tightened using parallel double-line clamps. During tightening, the clamp string is kept vertical. The V-type insulator is removed, and the conductor is correspondingly raised to the ground distance. The side phase composite insulating crossarm is assembled on the ground (see appendix). Figure 3 With all bolts at each node tightened, the lifting points are set on the end fittings of the two insulating pressure rods. The three lifting points are used to lift the entire structure to the outside of the upper section 02 of the tower. The side phase insulating pressure rod 09 and the multi-node support 05 are bolted together at the second node 05b, etc. The length of the PT fitting on the side phase insulating tie rod 08 is adjusted and connected to the hinge at the first node 05a, etc., so that the side phase insulating tie rod 08 is kept under tension. The side phase conductor is lifted to the side phase crossarm hanging point 09a and tightened with parallel double-line clamps. The suspension insulator is removed and the distance between the conductor and the ground is increased by one insulator height.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for modifying a wine glass tower with an insulating crossbeam structure, characterized in that: The structure includes a lower section (01) of the tower body, an upper section (02) of the tower body, a ground wire support (03), a truss beam (04), a composite insulated crossarm, and ground wires and conductors. The upper part of the upper section (02) of the tower body is supported by a multi-node support (05), which is connected to the upper section (02) of the tower body through a second node (05b) and a third node (05c). The composite insulated crossarm is installed between the multi-node support (05) supports on both sides and is connected to each other as a whole. The ground wire support (03) is installed at the upper end of the multi-node support (05), and the ground wire supports (03) on both sides are fixedly connected by a truss beam (04). The ground wire is installed at the hanging point (03a) of the ground wire support, and the conductor is installed at the hanging point (07a) of the middle phase crossarm and the hanging point (09a) of the side phase crossarm of the composite insulated crossarm. The composite insulating crossarm includes a middle phase insulating crossarm between the multi-node supports (05) on the left and right sides and a side phase insulating crossarm outside the multi-node supports (05). The side phase insulating crossarm includes a side phase insulating tie rod (08) and a side phase insulating pressure rod (09). The middle phase insulating crossarm includes a middle phase insulating tie rod (06) and a middle phase insulating pressure rod (07). The side phase insulating tie rod (08) and the side phase insulating pressure rod (09) are in the form of a three-dimensional triangular structure and are arranged horizontally. The middle phase insulating tie rod (06) and the middle phase insulating pressure rod (07) are in the form of a symmetrical double three-dimensional triangular structure and are arranged horizontally. The modification method includes the following modification steps: S1: Loosen the conductor and ground wire, fix the side phase conductor and ground wire at the seventh node (01a) and the ninth node (01c), fix the middle phase conductor at the eighth node (01b), and remove the ground wire crossarm (30), truss beam (04) and angle steel crossarm; S2: Design multi-node support (05), truss beam (04), and ground wire support (03). Through electrical calculations, determine the structural dimensions of multi-node support (05) and ground wire support (03) to ensure that the angle between the line connecting the ground wire support hanging point (03a) and the side phase crossarm hanging point (09a) and the vertical line is less than or equal to a. Through mechanical calculations, determine the structural dimensions of truss beam (04) to meet the requirements of tower operation conditions. S3: The multi-node support (05) is an assembled structure. The parts are lifted separately to the upper part of the tower body (02) and connected by bolts at the second node (05b) and the third node (05c). Similarly, the truss beam (04) and ground wire bracket (03) components are lifted separately and assembled with the multi-node supports (05) on the left and right sides into a stable structure. The ground wire is lifted to the ground wire bracket hanging point (03a) for installation. S4: Assemble the middle phase insulated crossarm on the ground. The middle phase insulated tie rod (06) and the middle phase insulated pressure rod (07) are assembled at the middle phase crossarm hanging point (07a) through the hanging point hardware. The bolts connecting each node are in a semi-tightened state. The whole structure is lifted to the upper part of the tower body (02). The middle phase insulated pressure rod (07) is connected and tightened to the multi-node support (05) through the third node (05c) and the sixth node (05f). Adjust the length of the PT hardware on the middle phase insulated tie rod (06) and connect it with the hinge of the fourth node (05d) and the fifth node (05e) so that the middle phase insulated tie rod (06) is kept under tension. Lift the middle phase conductor to the middle phase crossarm hanging point (07a) and tighten it with parallel double wire clamps. Remove the V-type insulator and raise the conductor to the ground distance accordingly. S5: Assemble the side phase insulation crossarm on the ground, with the bolts at each node in a semi-tightened state. Lift the whole structure to the outside of the upper section (02) of the tower body. Tighten the bolts of the side phase insulation pressure rod (09) and the multi-node support (05) at the second node (05b). Adjust the length of the PT hardware on the side phase insulation tie rod (08) and connect it to the hinge at the first node (05a) so that the side phase insulation tie rod (08) is kept under tension. Lift the side phase conductor to the side phase crossarm hanging point (09a) and tighten it with parallel double-line clamps. Remove the suspension insulator and increase the conductor distance to the ground by one insulator height.

2. The method for modifying a wine glass tower with an insulating crossbeam structure according to claim 1, characterized in that: The side phase insulating tie rod (08) and the multi-node support (05) are hinged at the first node (05a) by PT fittings, and the length is adjustable. The side phase insulating pressure rod (09) and the multi-node support (05) are bolted together at the second node (05b). The middle phase insulating tie rod (06) and the multi-node support (05) are hinged at the fourth node (05d) by PT fittings, and the length is adjustable. The middle phase insulating tie rod (06) and the middle phase insulating pressure rod (07) are bolted together at the middle phase crossarm hanging point (07a) by fittings.

3. The method for modifying a wine glass tower with an insulating crossbeam structure according to claim 1, characterized in that: The insulating pressure bar is a composite material core with a uniform cross-section and an outer layer covered with a silicone rubber umbrella structure. The composite material core is a solid composite material rod or a filled core rod.

4. The method for modifying a wine glass tower with an insulating crossbeam structure according to claim 1, characterized in that: The angle between the line connecting the ground wire bracket hanging point (03a) and the side phase crossarm hanging point (09a) and the vertical line is less than or equal to angle a.

5. The method for modifying a wine glass tower with an insulating crossbeam structure according to claim 1, characterized in that: The side phase crossarm suspension point (09a) is used to suspend a single string or parallel double string clamps, eliminating the need for suspension insulators and significantly reducing the swing amplitude of the side phase conductors.

6. The method for modifying a wine glass tower with an insulating crossbeam structure according to claim 1, characterized in that: A single string or parallel double string is suspended at the middle phase crossarm hanging point (07a), eliminating the V-type insulator structure and significantly reducing the swing amplitude of the middle phase conductor.

7. The method for modifying a wine glass tower with an insulating crossbeam structure according to claim 1, characterized in that: The composite insulating crossarm is designable, and the designability is such that, provided the electrical and mechanical performance requirements are met, the insulation length of the side phase insulating tie rod (08) and the side phase insulating pressure rod (09) can be increased or decreased according to the modification requirements.

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