CN106382047B - A kind of transmission tower insulation truss module - Google Patents

Abstract

The invention provides an insulating truss module for power transmission towers, which belongs to the field of power transmission towers. The insulating truss module is a rectangular parallelepiped truss structure built with composite material components as a whole, and is sequentially divided into upper live working insulation section, The insulation piercing section, the lower insulation working section, the top end of the upper live working insulating section and the bottom end of the lower live working insulating section are respectively equipped with standardized sleeve-type metal flanges and joints. It is connected by metal-free winding fusion node technology. The insulating truss module provided by the present invention has a simple structure but good electrical insulation and stability, and its standard modular design is applicable to a wide range of occasions, which is convenient for mass production and combined use, can shorten the construction time and cost of power transmission poles and towers, and improve power transmission. Tower erection efficiency.

Description

A transmission tower insulation truss module

Technical Field The present invention relates to the field of power transmission line towers, in particular to an insulation truss module for power transmission towers.

Background Art Due to the general quality of wooden poles, concrete, steel pipe concrete poles, steel pipe poles, and iron towers used in traditional overhead transmission lines, it is very inconvenient to produce, transport, and erect. Iron towers made of metal materials such as steel or iron are easy to rust, wooden poles are easy to rot, and concrete is easy to crack. Traditional materials have poor durability and their operation and maintenance are also difficult. Therefore, glass fiber reinforced plastics, referred to as FRP, are now introduced into overhead transmission lines. (hereinafter referred to as GFRP composite material) has the characteristics of good insulation, corrosion resistance, light weight and high strength. The insulation properties of GFRP composite materials can realize the harmony and unification of structural materials and functional materials, and have an insulation effect while achieving overhead support, and are increasingly used. However, there are the following problems in the current application: ① connection problem, the composite material is a brittle material, the opening of the hole is easy to cause the fracture of the composite material fiber, and it will also cause a great stress concentration, the concentrated stress is easy to deform the tower, so The rotary hole connection method on the traditional steel frame cannot be adopted. ② The component cost and processing cost are relatively high. The processing and molding of composite materials requires the production of molds in advance, and each specification component needs a corresponding set of molds. Different environments often require components of different specifications. If there are too many components and they are not used on a large scale, the processing cost of a single component will increase significantly, and the time required for producing and assembling components will also increase greatly.

Summary of the invention In order to overcome the above problems, the present invention provides an insulating truss module made of GFRP composite material, which adopts a standardized module design and does not need to be connected by a rotary hole connection, which is convenient for stacking and combination, and is convenient for production and use.

In order to achieve the above object, the technical scheme adopted by the present invention is as follows: an insulating truss module of a power transmission tower. The working insulation section, the insulation piercing section, and the lower live working insulation section. The front and rear sides of the insulation piercing section are provided with diamond-shaped tower windows of the same size and symmetrical positions. The left and right sides of the insulated body part are provided with spherical hanging points, and the spherical hanging points are provided with protruding hanging holes. The side surfaces of the upper live working insulating section and the lower live working insulating section both adopt a cross bar structure. The top end of the upper live working insulating section and the bottom end of the lower live working insulating section are respectively provided with standardized sleeve-type metal flanges and joints. The insulating rods, and the insulating rods and the spherical hanging points are connected by metal-free winding fusion node technology.

Further, in order to strengthen the stability of the module structure and facilitate the passage of electric personnel, the top surface of the upper live working insulating section, the joint surface between the upper live working insulating section and the insulating body section are all made of insulating rods to form a rhombus and the diamond-shaped ports are of the same size.

Further, the left and right sides of the middle section are also designed with diamond-shaped tower windows of the same size and symmetrical positions.

Further, a cross insulation rod structure is adopted under the diamond-shaped tower windows on the front and rear sides of the middle section.

Further, one side of the insulating truss module is provided with an insulating ladder facing outward, and the insulating ladder is detachably connected to the insulating truss module.

Further, the insulating ladder is provided with a plug-in rod, and the insulating truss module is provided with a jack adapted to the size of the plug-in rod and used in cooperation, and the plug-in hole is protruding.

Further, the metal-free winding fusion node technology includes three steps of thin shell wrapping, prepreg fiber bundle winding, and mold pressure curing.

Further, the composite material is glass fiber reinforced plastic.

The beneficial effects of the present invention are as follows: 1. The insulating truss module provided by the present invention is a standardized modular design, and its module volume and structure are designed according to actual application conditions. The modular design meets the requirements of mass production and can greatly Reduce the cost of composite material mold manufacturing, reduce the processing cost of composite material components, and facilitate standardized assembly and use. In practical application, this module can be used to hang the phase wire in the straight tower, and can also be used for the phase jumper in the corner tower. The side-by-side combination of three truss modules can also be used in the rocket tower in the corridor restricted area, which has wide versatility .

2. The present invention does not need to connect holes on the rods, and solves the problems of difficulty in matching the formed rods and joints in the traditional truss during secondary assembly and excessive assembly prestress. Moreover, the fused nodes and rods used in the present invention are integrated into one body, which has the characteristics of good integrity and high reliability, can effectively improve the load transmission efficiency, avoid damage to the rubber section, and ensure the structural integrity of the entire tower body and insulation.

3. The top and bottom ends of the insulating truss module in the present invention are provided with standardized sleeve-type metal flanges and joints, which further facilitate any combination and connection between modules and between modules and metal towers.

Description of drawings

Fig. 1 is the overall schematic diagram of the specific embodiment of the present invention;

Figure 2 is a schematic side view of a specific embodiment of the present invention;

Fig. 3 is a schematic front view of a specific embodiment of the present invention;

Fig. 4 is a schematic diagram of a spherical hanging point according to a specific embodiment of the present invention.

Shown in the figure: upper live working insulating section 1, insulating body piercing section 2, lower live working insulating section 3, flange joint 4, spherical hanging point 5, insulating climbing ladder 6, diamond-shaped tower window 7.

Detailed ways

As shown in Figure 1, this embodiment is an insulating truss module that is easy to assemble and install. It is a rectangular insulating truss as a whole. The insulating rods are formed by combining insulating joints, and standardized sleeve-type flange joints 4 are provided at the top and bottom of the module to facilitate modular assembly and use. In order to facilitate line electrical work and line power failure maintenance, a special detachable insulating ladder 6 is provided on the front side of the insulating truss module along the side wall. Ladder 6 ages and causes climbing accident. The insulating ladder 6 and the insulating truss module are provided with a plug-in rod perpendicular to the insulating ladder 6 or inclined downward, and the insulating truss module is provided with a socket used in conjunction with the plug-in rod, so as to facilitate the operator to climb the insulating ladder 6. The socket protrudes from the surface of the insulating truss module, so that there is a certain gap between the insulating ladder 6 and the insulating truss module for easy gripping. The insulating ladder 6 greatly facilitates people going up and down, and at the same time avoids the insulating truss module from being worn out by climbing, effectively ensuring the electrical performance of the insulating truss module.

The width of the insulating truss module is 2200mm, and two layers of insulating rods are arranged horizontally above and below it to divide the module into an upper live working insulation section 1, an insulating body-piercing section 2, and a lower live working insulating section 3. The height of the upper live working insulation section 1 and the lower live insulation section are the same, 2000mm, and the height of the insulation piercing section 2 is 9000mm. In this embodiment, the length, height, and width data of the modules can be uniformly formulated according to actual engineering standards, so as to facilitate mass production and processing in factories, and greatly reduce production time and production costs.

The four sides of the upper live working insulating section 1 and the lower live working insulating section 3 are provided with cross insulating rods to increase strength, and the top and bottom surfaces of the upper live working insulating section 1 are provided with diamond-shaped openings of the same size and corresponding positions. The function of the diamond-shaped opening is to provide space for electric personnel to shuttle on the insulating truss module while strengthening the structural stability of the insulating section 1 for live work. When the operator climbs up the live working insulation section 1 and the lower live working insulating section 3, since the insulation truss module is insulated as a whole, when the operator wears shielding clothing and ensures that it does not come into contact with the grounding body, the operator can be seen as For equipotential work, it can safely go up the tower for live work. The metal-free winding fusion node technology is adopted between the insulating joint and the insulating rod, and the insulating rod and the insulating joint are fused together through three steps of thin shell wrapping, pre-impregnated fiber bundle winding, and mold pressure curing, so that no secondary assembly is required. insulating truss modules.

As shown in Fig. 2 and Fig. 3, the front, rear, left, and right sides of the insulating body section 2 are all designed with diamond-shaped tower windows 7, and the front, rear, and left and right sides are symmetrical in pairs. A solid spherical hanging point 5 made of GFRP composite material is provided at the junction of the top of the diamond-shaped tower window 7 on the rear two sides and the top of the front side. As shown in Figure 4, the insulating rod is embedded inside the sphere. The obliquely lower part of the spherical hanging point 5 on the side and the obliquely lower part of the spherical hanging point 5 on the rear side are provided with a hanging hole obliquely protruding toward the middle side of the insulating body part 2 . Through the two spherical hanging points 5 corresponding to the front and back, V-shaped string hanging points or I-shaped string hanging points can be set to adapt to different adaptation environments.

In this embodiment, the rods are in the form of hollow round tubes, and the traditional pultrusion process is adopted. The joints are wound by hand and molded. Structural integrity and insulation of the body.

In summary, the insulating truss module provided by the present invention has a simple structure but has good electrical insulation and stability, and its standard modular design is suitable for a wide range of occasions, is convenient for mass production and combined use, and can shorten the construction time of transmission towers and cost, and improve the efficiency of transmission tower erection.

Claims (10)

1. The truss module 1. a kind of transmission tower insulate, it is characterised in that: the insulation truss module is whole using composite material The cuboid truss structure that component is built, be in turn divided into from the top down upper live line work insulating section, insulation wear figure, Lower live line work insulating section, the front and rear sides face for wearing figure of insulating identical, positional symmetry diamond shape tower window, diamond shape equipped with size The apex angle of tower window connects with lateral composite element, and the arranged on left and right sides face that figure is worn in insulation is equipped with spherical hanging point, and spherical shape is hung Point is equipped with the hanging hole of protrusion；The upper live line work insulating section, lower live line work insulating section side be all made of crossbar junctions Structure；The top of the upper live line work insulating section and the bottom end of lower live line work insulating section are respectively equipped with standardization double-pipe metal Flange and connector；It is connected between the insulating bar, between insulating bar and spherical hanging point using no metal winding aggregators technology.
2. The truss module 2. a kind of transmission tower according to claim 1 insulate, it is characterised in that: the upper livewire work is exhausted Rim segment top surface, upper live line work insulating section and insulation, which are worn, to be all made of insulating bar group and takes that form diamond shape logical on abutted surface between figure Mouthful and the diamond shape port size it is identical.
3. The truss module 3. a kind of transmission tower according to claim 1 insulate, it is characterised in that: figure is worn in the insulation Left and right side also uses that size is identical, the design of diamond shape tower window of positional symmetry.
4. The truss module 4. a kind of transmission tower according to claim 1 insulate, it is characterised in that: figure is worn in the insulation Transposition insulator rod structure is used below diamond shape tower window on front and rear sides face.
5. The truss module 5. a kind of transmission tower according to claim 1 insulate, it is characterised in that: the insulation truss module Side face outwardly equipped with insulating ladder, the insulating ladder with insulation truss module be detachably connected.
6. The truss module 6. a kind of transmission tower according to claim 5 insulate, it is characterised in that: set on the insulating ladder There is inserted link, the insulation truss module is equipped with the jack for adapting to and being used cooperatively with inserted link size, the jack protrusion setting.
7. The truss module 7. a kind of transmission tower according to claim 1 insulate, it is characterised in that: the no metal winding is melted Closing node technology includes that shell package, pre-soaking fiber wrapping around, mould pressurizing solidify three steps.
8. The truss module 8. a kind of transmission tower according to claim 1 insulate, it is characterised in that: the upper livewire work is exhausted It is 2200mm that rim segment, the height of lower live line work insulating section, which are 2000mm, width, and the insulation wears figure height and is 9000mm, it is 2200mm that figure width is worn in the insulation.
9. The truss module 9. a kind of transmission tower according to claim 1 insulate, it is characterised in that: the spherical shape hanging point is to adopt The solid sphere made of composite material, the insulating bar are embedded at ball interior；Upward convex be equipped in the sphere obliquely downward is hung Hole.
10. The truss module 10. a kind of transmission tower according to claim 1 insulate, it is characterised in that: the composite material is Fiberglass reinforced plastics.