CN105239817A - Composite material power transformation framework - Google Patents

Composite material power transformation framework Download PDF

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Publication number
CN105239817A
CN105239817A CN201510722248.3A CN201510722248A CN105239817A CN 105239817 A CN105239817 A CN 105239817A CN 201510722248 A CN201510722248 A CN 201510722248A CN 105239817 A CN105239817 A CN 105239817A
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China
Prior art keywords
composite material
flange
top flange
pipe
material pole
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CN201510722248.3A
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CN105239817B (en
Inventor
王立东
赵志宏
杨国斌
尹振生
王学荣
任志成
何昌林
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Shaanxi Yinhe Electric Tower Co Ltd
State Grid Corp of China SGCC
Wuhan NARI Ltd
Yuncheng Power Supply Co of State Grid Shanxi Electric Power Co Ltd
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Shaanxi Yinhe Electric Tower Co Ltd
State Grid Corp of China SGCC
Yuncheng Power Supply Co of State Grid Shanxi Electric Power Co Ltd
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Priority to CN201510722248.3A priority Critical patent/CN105239817B/en
Publication of CN105239817A publication Critical patent/CN105239817A/en
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Publication of CN105239817B publication Critical patent/CN105239817B/en
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Abstract

The invention discloses a composite material power transformation framework which comprises a support pillar and an insulating cross beam arranged on the support pillar and is characterized in that the support pillar comprises a composite material circular tube; the insulating cross beam comprises a composite material round rod prepared through the pultrusion process; an insulating umbrella skirt is connected with the outer wall of the composite material round rod in a pressing manner; the composite material circular tube comprises a base layer, a strengthened layer, a buffer layer and an outer layer sequentially arranged from interior to exterior; the composite material power transformation framework has the beneficial effects of solving the problem that the existing composite material is poor in overall stability when applied to the power transformation framework, being light in weight, high in strength, stable in structure, convenient and fast in transportation and installation, corrosion resistant, salt mist and acid rain resistant, excellent in electric property, reliable in operation, capable of greatly reducing the framework span to realize compact arrangement, and small in later maintenance quantity.

Description

A kind of composite material substation framework
Technical field
The present invention relates to a kind of substation framework used at transformer station, transmission line of electricity.
Background technology
Shaft tower comparatively is widely used to mainly contain wooden stick, concrete or a few class of prestressed concrete bar, steel reinforced concrete pole, steel tube tower and steel tower in domestic and international overhead transmission line and transformer station.
Due to the difference of service life, great majority be applied in the tower bar in overhead transmission line and the substation framework be applied in transformer station all there are the old and new and deposit, various structures form and situation.These tower bars and substation framework in use there will be damage in various degree, deterioration and aging phenomenon, such as, there is external crack, carbonization, peeled off and rebar corrosion equivalent damage in some concrete structures, there is steel corrosion, distortion (as depression, distortion), bending, eccentric equivalent damage in some steel structure frame, and along with the growth of service life, the damage of these frameworks can constantly increase, and brings very large potential safety hazard to the normal operation of power system.
Meanwhile, be different from overhead transmission line, the place of transformer station is often comparatively nervous, and conventional concrete and steel pipe substation framework are macrostructure size framework, and occupation of land and line corridor width are comparatively large, are subject to place restriction in design and construction process.Therefore, the substation framework condition applied in transformer station is more harsh.
In order to solve the problem, technician is finding that a kind of cost is reasonable, floor space is little, process easy and not easily damaged material always.
Summary of the invention
The invention provides a kind of composite material substation framework, mainly solve the problem that when existing composite material is applied in substation framework, resistance to overturning is poor.
Technical solution of the present invention is as follows:
A kind of composite material substation framework, the insulation crossbeam comprising support column and arrange on the support columns, described support column comprises composite tube, and insulation crossbeam comprises the composite material pole adopting pultrude process to prepare, crimping insulation full skirt on the outer wall of composite material pole; Described composite tube comprises the basalis, strengthening layer, cushion coat and the skin that set gradually from the inside to the outside, and described basalis, strengthening layer, cushion coat and outer field thickness and pipe external diameter ratio are 0.5 ~ 0.6:0.1 ~ 0.2:0.1 ~ 0.2:0.1 ~ 0.2:15; Described basalis is specifically: Mg, 4 ~ 6%; Cr, 0.1 ~ 0.2%; Mn, 2.5 ~ 3.0%, V, 2.0 ~ 2.5%, Ti, 5.0 ~ 5.5%, surplus is Al; Described strengthening layer is specifically: glass fiber 8 ~ 10%, carbon dust 5 ~ 8%, pine trunk wood powder 3 ~ 7%, elm trunk wood powder 4 ~ 7% and polyethylene 70 ~ 80%; Described cushion coat is specifically: EP rubbers 80 ~ 90%, nano silicon 5 ~ 10%, carbon fiber 5 ~ 10%; Described skin is specifically: MgO, 3 ~ 5%; Cr 2o 3, 0.1 ~ 0.15%; MnO 2, 2.3 ~ 2.5%, V 2o 5, 2.3 ~ 2.5%, TiO 2, 5.3 ~ 5.6%, CuO, 3.1 ~ 3.3%, surplus is resin.
On the basis of above scheme, the present invention also makes following important optimization further:
Described support column is two groups of single poles, and often group single pole comprises the composite tube that at least two-stage adopts braiding winding pultrude process to prepare, and adopts Flange joint between composite tube at different levels.
Described support column is four groups, every two groups is a herringbone support column, each herringbone support column comprises at least one-level stull and level Four adopts the composite tube weaving and be wound around pultrude process and prepare, adopt Flange joint between composite tube at different levels, on the flange of insulation crossbeam side, be provided with the fixing hole for fixing stull.
Described insulation crossbeam comprises two short composite material poles and a long composite material pole; Long composite material pole two ends are provided with long composite material pole flange; Two short composite material poles are provided with short composite material pole flange for the one end be connected with long composite material pole, long composite material pole flange is fixedly connected with by bearing with short composite material pole flange, and bearing is fixing on the support columns for the crossbeam that will insulate; Described two short composite material poles are provided with hanging point away from the two ends of long composite material pole, are provided with hanging point in the middle part of long composite material pole; Silicon rubber umbrella skirt is provided with outside described long composite material pole, short composite material pole.
Adopt Flange joint between described composite tube, the end winding support of two-stage composite tube junction has flange, is provided with cable quadrant between two-stage flange; Described cable quadrant comprises fixed part and bracing wire parts, fixed part and Flange joint end face suitable, the angle between bracing wire parts and fixed part is 110 ° ~ 130 °, bracing wire parts is provided with the wiring holes for connecting stay wire; Described stull is triangular steel, and triangular steel two ends offer connecting hole, is coordinated be fixed on flange by triangular steel by screws bolts.
Described bearing comprises the first top flange pipe, the first top flange disk, the first top flange stiffener, top flange flat board, the second top flange pipe, the second top flange disk, first flange pipe two ends, top is respectively arranged with the first top flange disk, first top flange pipe and two first push ups to be respectively arranged with between flange disk and multiplely push ups flange stiffener for increasing first of intensity, and multiple first top flange stiffener to push up centered by flange pipe central axis circumferentially shape by first and distributes; First top flange pipe is by fixing with top flange flat board, flange dull and stereotyped upper surface in top is fixedly connected with top flange arch sheet, flange dull and stereotyped soffit and second in top pushes up flange pipe and is connected, second top flange pipe is provided with the second top flange disk away from the dull and stereotyped side of top flange, second top flange pipe and second push up to be respectively arranged with between flange disk and multiplely push up flange stiffener for increasing second of intensity, and multiple second top flange stiffener to push up centered by flange pipe central axis circumferentially shape by second and distributes; Described first top flange pipe is used for fixed insulation crossbeam, and the second top flange pipe is for connecting support column; When second flange pipe is two, between two second top flange pipes, be provided with top flange angle board; Described first top flange pipe, the first top flange disk, the first top flange stiffener, top flange flat board, the second top flange pipe, the second top flange disk, top flange arch sheet, the second top flange stiffener, the mass ratio pushed up between flange angle board are 9.9:4.4:0.2:9.0:4.1:3.8:1.7:0.2:1.4.
Mass ratio between described long composite material pole, long composite material pole hanging point, long composite material pole full skirt and long composite material pole flange is 64.1:11.2:4.1:14.1; Mass ratio between described short composite material pole, short composite material full skirt, short composite material pole hanging point and short composite material pole flange is 33.1:4.7:10.8:14.1.
When described each group of support column comprises two-stage or two-stage above composite tube, the mass ratio being used for the flange is connected with bearing near insulation the first composite tube of crossbeam and this composite tube is 14.3:9.3, is 14.3:10.4 near the composite tube of insulation crossbeam and this composite tube for the mass ratio of the flange be connected with the composite tube of next stage; Bottom composite tube is 30.2:9.3 with the mass ratio of the flange for connecting with its upper level composite tube be connected, and the mass ratio of bottom composite tube and flange in the bottom is 30.2:36; Between described first composite tube and next stage composite tube, the first triangular steel of Flange joint and the mass ratio of this flange are the 1.9:3.4 of 1.9:10.4, the mass ratio between the first triangular steel and next stage triangular steel.
Described composite tube comprises the basalis, strengthening layer, cushion coat and the outer field thickness that set gradually from the inside to the outside and pipe external diameter ratio is 0.55:0.15:0.2:0.1:15; Described basalis is prepared from by aluminium alloys, al alloy component specifically: Mg5.3%; Cr1.4%; Mn2.6%, V2.5%, Ti5.5%, surplus is Al; Described strengthening layer is specifically: glass fiber 9%, carbon dust 7%, pine trunk wood powder 6%, elm trunk wood powder 5% and polyethylene 73%; Described cushion coat is specifically: EP rubbers 83%, nano silicon 8%, carbon fiber 9%; Described skin is specifically: MgO3%; Cr 2o 30.1%; MnO 22.4%, V 2o 52.5%, TiO 25.5%, CuO3.3%, surplus is resin.
Described composite tube comprises the basalis, strengthening layer, cushion coat and the outer field thickness that set gradually from the inside to the outside and pipe external diameter ratio is 0.6:0.2:0.1:0.1:15; Described basalis is specifically: Mg4%; Cr0.2%; Mn3.0%, V2.4%, Ti5.3%, surplus is Al; Described strengthening layer is specifically: glass fiber 10%, carbon dust 5%, pine trunk wood powder 3%, elm trunk wood powder 4% and polyethylene 78%; Described cushion coat is specifically: EP rubbers 85%, nano silicon 7%, carbon fiber 8%; Described skin is specifically: MgO4%; Cr 2o 30.13%; MnO 22.5%, V 2o 52.5%, TiO 25.6%, CuO3.1%, surplus is resin.
The glass fiber of described composite tube strengthening layer is sandwich construction, first floor is long glass fibres 45 degree of organization levels, and the second layer is longitudinal glass layer, and third layer is hoop glass layer, 4th layer is longitudinal glass layer, and layer 5 is long glass fibres 45 degree of braids; The second layer is 75% to the 4th layer of longitudinal glass fiber accounting, and hoop glass fiber accounting is 25%.
The present invention's beneficial effect is compared with prior art:
1, the invention solves the problem that when existing composite material is applied in substation framework, resistance to overturning is poor; Quality is light, intensity is high, Stability Analysis of Structures, easy transportation and installation are quick;
2, corrosion-resistant, salt fog resistance and acid rain, weatherability is superior;
3, excellent electric properties, improves operational reliability;
4, can significantly reduce support span, realize compact arrangement;
5, later maintenance amount greatly reduces;
6, weave pultrude process, played fibrous composite high-strength light a little, overcome the weakness of common pultrusion pipe ring to strength and stiffness deficiency, solve again fixed length wind pipe longitudinal strength not enough, recruitment is many, the defect that technique is loaded down with trivial details.Under the state that mould is motionless, pultrusion goes out large-size fiber establishment pipeline, and continuous seepage, production efficiency is high.
Accompanying drawing explanation
Fig. 1 is single rod supported structural representation of the present invention;
Fig. 2 is herringbone bar braced structures schematic diagram of the present invention;
Fig. 3 is herringbone rod bearing structural representation of the present invention;
Fig. 4 is the present invention's long composite material pole schematic diagram;
Fig. 5 is the present invention's short composite material pole schematic diagram;
Fig. 6 is the structural representation of stull of the present invention and Flange joint;
Icon illustrates:
1. insulate crossbeam; 2. support column; 3. bearing; 4. flange; 5. cable quadrant; 6. stull; 9. flange in the bottom; 11. long composite material poles; 12. long composite material pole hanging points; 13. long composite material pole full skirts; 14. short composite material poles; 15. short composite material full skirts; 16. short composite material pole hanging points; 17. long composite material pole flanges; 18. short composite material pole flanges; 31. first top flange pipes; 32. first top flange disks; 33. first top flange stiffeners; 34. top flanges are dull and stereotyped; 35. second top flange pipes; 36. second top flange disks; 37. top flange arch sheets; 38. second top flange stiffeners; 39. top flange angle boards; 61. first triangular steels; 62. next stage triangular steels.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail:
Embodiment 1
A kind of composite material substation framework of the present invention, the insulation crossbeam 1 comprising support column 2 and be arranged on support column 2, support column 2 is for supports insulative crossbeam 1, described support column 2 comprises composite tube, insulation crossbeam 1 comprises the composite material pole adopting pultrude process to prepare, crimping insulation full skirt on the outer wall of composite material pole; Described composite tube comprises the basalis, strengthening layer, cushion coat and the skin that set gradually from the inside to the outside, and described basalis, strengthening layer, cushion coat and outer field thickness and pipe external diameter ratio are 0.5 ~ 0.6:0.1 ~ 0.2:0.1 ~ 0.2:0.1 ~ 0.2:15; Described basalis is specifically: Mg, 4 ~ 6%; Cr, 0.1 ~ 0.2%; Mn, 2.5 ~ 3.0%, V, 2.0 ~ 2.5%, Ti, 5.0 ~ 5.5%, surplus is Al; Described strengthening layer is specifically: glass fiber 8 ~ 10%, carbon dust 5 ~ 8%, pine trunk wood powder 3 ~ 7%, elm trunk wood powder 4 ~ 7% and polyethylene 70 ~ 80%; Described cushion coat is specifically: EP rubbers 80 ~ 90%, nano silicon 5 ~ 10%, carbon fiber 5 ~ 10%; Described skin is specifically: MgO, 3 ~ 5%; Cr 2o 3, 0.1 ~ 0.15%; MnO 2, 2.3 ~ 2.5%, V 2o 5, 2.3 ~ 2.5%, TiO 2, 5.3 ~ 5.6%, CuO, 3.1 ~ 3.3%, surplus is resin.
Embodiment 2
Composite material substation framework according to embodiment 1, described support column 2 is two groups of single poles, and often group single pole comprises the composite tube that at least two-stage adopts braiding winding pultrude process to prepare, and adopts flange 4 to connect between composite tube at different levels.
Fig. 1 is single rod supported structural representation of the present invention; In figure, support column 2 is two groups of single poles, often organizes single pole and comprises three grades of composite tubes adopting braiding winding pultrude process to prepare, adopt flange 4 to connect between composite tube at different levels.
Embodiment 3
Composite material substation framework according to embodiment 1, described support column 2 is four groups, every two groups is a herringbone support column 2, each herringbone support column 2 comprises at least one-level stull 6 and level Four adopts the composite tube weaving and be wound around pultrude process and prepare, adopt flange 4 to connect between composite tube at different levels, on the flange 4 of insulation crossbeam 1 side (inner side), be provided with the fixing hole for fixing stull 6.
Fig. 2 is herringbone bar braced structures schematic diagram of the present invention; The support column 2 of herringbone bar braced structures is four groups, every two groups is a herringbone support column 2, each herringbone support column 2 comprises two-stage stull 6 and six grades of composite tubes adopting braiding winding pultrude process to prepare, flange 4 is adopted to connect between composite tube at different levels, on the flange 4 of insulation crossbeam 1 side (inner side), be provided with the fixing hole for fixing stull 6, Fig. 6 is the structural representation of stull of the present invention and Flange joint.
Embodiment 4
Composite material substation framework according to embodiment 1, described insulation crossbeam 1 comprises two short composite material poles 14 and a long composite material pole 11; Fig. 4 is the present invention's long composite material pole schematic diagram, and long composite material pole 11 two ends are provided with long composite material pole flange 17; Fig. 5 is the present invention's short composite material pole schematic diagram, two short composite material poles 14 are provided with short composite material pole flange 18 for the one end be connected with long composite material pole 11, long composite material pole flange 17 is fixedly connected with by bearing 3 with short composite material pole flange 18, and bearing 3 is for being fixed on support column 2 by insulation crossbeam 1; Described two short composite material poles 14 are provided with hanging point away from the two ends of long composite material pole 11, are provided with hanging point in the middle part of long composite material pole; Silicon rubber umbrella skirt is provided with outside described long composite material pole 11, short composite material pole 14.
Compound material insulation crossbeam 1 structural shape, comprises three composite material poles and two bearings 3.Be characterized in: composite material pole crimps silicon rubber umbrella skirt outward, play electrical insulation effect, eliminate insulator string.Structure is by so order is assembled: a long composite material pole 11+ bearing 3+ of short composite material pole 14+ bearing 3+ mono-short composite material pole 14.Substation framework is supported on two bearing 3 places, and three wires are hung on both sides and centre respectively.
Embodiment 5
Composite material substation framework according to above embodiment, adopts flange 4 to connect between described composite tube, the end winding support of two-stage composite tube junction has flange 4, is provided with cable quadrant 5, as shown in Figure 6 between two-stage flange 4; Described cable quadrant 5 comprises fixed part and bracing wire parts, fixed part and flange 4 connecting end surface suitable, the angle between bracing wire parts and fixed part is 110 ° ~ 130 °, bracing wire parts is provided with the wiring holes for connecting stay wire; Described stull 6 is triangular steel, and triangular steel two ends offer connecting hole, is coordinated be fixed on flange 4 by triangular steel by screws bolts.
Cable quadrant 5 is for connecting windproof anti-down bracing wire, and bracing wire one end is fixedly connected with cable quadrant 5, and the other end is fixedly connected with ground; In order to ensure the intensity of cable quadrant 5, the fixed part of cable quadrant 5 and bracing wire parts should be set to integral piece, fixed part and flange 4 connecting end surface suitable, as shown in Figure 6, the screw fixing two flanges 4 is simultaneously through the suitable fixing hole that the fixed part of clamping connection two flanges 4 coil is arranged, thus complete definitely fixing cable quadrant 5, angle between bracing wire parts and fixed part is to adopt 120 ° for good, the setting of this angle and the angle between bracing wire and ground match, and the intensity of cable quadrant 5 is determined according to designing requirement.
Embodiment 6
Composite material substation framework according to above embodiment, the structure of bearing 3 as shown in Figure 3, described bearing 3 comprises the first top flange pipe 31, first top flange disk 32, first top flange stiffener 33, top flange flat board 34, second top flange pipe 35, second top flange disk 36, first flange pipe 31 two ends, top is respectively arranged with the first top flange disk 32, first top flange pipe 31 and two first push up to be respectively arranged with between flange disk 32 and multiplely push up flange stiffener 33 for increasing first of intensity, the circumferentially shape distribution centered by the first top flange pipe 31 central axis of multiple first top flange stiffener 33, first top flange pipe 31 is fixed by 3 and top flange dull and stereotyped 34, flange dull and stereotyped 34 upper surfaces in top are fixedly connected with top flange arch sheet 37, flange dull and stereotyped 34 soffits and second in top push up flange pipe 35 and are connected, second top flange pipe 35 is provided with the second top flange disk 36 away from dull and stereotyped 34 sides of top flange, second top flange pipe 35 and second push up to be respectively arranged with between flange disk 36 and multiplely push up flange stiffener 38 for increasing second of intensity, and multiple second top flange stiffener 38 to push up centered by flange pipe 35 central axis circumferentially shape by second and distributes, described first top flange pipe 31 pushes up flange pipe 35 for connecting support column 2 for fixed insulation crossbeam 1, second, Fig. 3 is herringbone rod bearing structural representation of the present invention, and the second flange pipe of herringbone bar structure is two, when the second flange pipe is two, is provided with top flange angle board 39 between two second top flange pipes 35, described first flange disk 32, first top, flange pipe 31, first top, top flange stiffener 33, flange flat board 34, second top, top flange pipe 35, second push up flange disk 36, the mass ratio pushed up between flange arch sheet 37, second top flange stiffener 38, top flange angle board 39 is 9.9:4.4:0.2:9.0:4.1:3.8:1.7:0.2:1.4.If support column 2 is two groups of single poles, only there is one second to push up flange pipe 35 and the second top flange disk 36 below the top flange flat board 34 of its bearing 3, do not push up flange angle board 39.
Embodiment 7
Composite material substation framework according to above embodiment, the mass ratio between described long composite material pole 11, long composite material pole 11 hanging point 12, long composite material pole full skirt 13 and long composite material pole flange 17 is 64.1:11.2:4.1:14.1; Mass ratio between described short composite material pole 14, short composite material full skirt 15, short composite material pole hanging point 16 and short composite material pole flange 18 is 33.1:4.7:10.8:14.1.
Embodiment 8
Composite material substation framework according to above embodiment, when described each group of support column 2 comprises two-stage or two-stage above composite tube, the mass ratio being used for the flange 4 is connected with bearing 3 near insulation the first composite tube of crossbeam 1 and this composite tube is 14.3:9.3, is 14.3:10.4 near the composite tube of insulation crossbeam 1 and this composite tube for the mass ratio of the flange 4 be connected with the composite tube of next stage; Bottom composite tube is 30.2:9.3 with the mass ratio of the flange 4 for connecting with its upper level composite tube be connected, and the mass ratio of bottom composite tube and flange in the bottom 9 is 30.2:36; The first triangular steel 61 that described first composite tube is connected with flange 4 between next stage composite tube is 1.9:10.4 with the mass ratio of this flange 4, the 1.9:3.4 of the mass ratio between the first triangular steel 61 and next stage triangular steel 62.
Embodiment 9
Below the composite tube adopting braiding winding pultrude process to prepare is specifically described:
Composite tube at different levels can be designed as same inner diameter, also can be designed as different inner diameters, the composite tube compared with large diameter should be installed on bottom when being designed to different inner diameters, then according to internal diameter from assembling successively to minispread greatly.
As above level composite material pipe comprises the basalis, strengthening layer, cushion coat and the outer field thickness that set gradually from the inside to the outside and pipe external diameter ratio is 0.55:0.15:0.2:0.1:15; Described basalis is prepared from by aluminium alloys, al alloy component specifically: Mg5.3%; Cr1.4%; Mn2.6%, V2.5%, Ti5.5%, surplus is Al; Described strengthening layer is specifically: glass fiber 9%, carbon dust 7%, pine trunk wood powder 6%, elm trunk wood powder 5% and polyethylene 73%; Described cushion coat is specifically: EP rubbers 83%, nano silicon 8%, carbon fiber 9%; Described skin is specifically: MgO3%; Cr 2o 30.1%; MnO 22.4%, V 2o 52.5%, TiO 25.5%, CuO3.3%, surplus is resin.
Next stage composite tube comprises the basalis, strengthening layer, cushion coat and the outer field thickness that set gradually from the inside to the outside and pipe external diameter ratio is 0.6:0.2:0.1:0.1:15; Described basalis is specifically: Mg4%; Cr0.2%; Mn3.0%, V2.4%, Ti5.3%, surplus is Al; Described strengthening layer is specifically: glass fiber 10%, carbon dust 5%, pine trunk wood powder 3%, elm trunk wood powder 4% and polyethylene 78%; Described cushion coat is specifically: EP rubbers 85%, nano silicon 7%, carbon fiber 8%; Described skin is specifically: MgO4%; Cr 2o 30.13%; MnO 22.5%, V 2o 52.5%, TiO 25.6%, CuO3.1%, surplus is resin.
Support column 2 composite tube comprises the basalis, strengthening layer, cushion coat and the outer field four-layer structure form that set gradually from the inside to the outside, add and first on mould, process basalis man-hour, then adopt multi-layer co-extruded mode work strengthening layer, cushion coat and skin outside basalis successively.
Basalis is mainly used in base support, selects aluminum alloy material, and design parameter is: Mg, and 4 ~ 6%; Cr, 0.1 ~ 0.2%; Mn, 2.5 ~ 3.0%, V, 2.0 ~ 2.5%, Ti, 5.0 ~ 5.5%, surplus is Al.
Wherein Mg is as intensified element, and for strengthening tubing intensity, Mn and Cr, for improving recrystallization temperature, stops grain coarsening, and V is for increasing tubing toughness and intensity, and Ti is used for crystal grain thinning.
Strengthening layer is mainly used in strengthening basalis intensity, specifically selects: glass fiber 8 ~ 10%, carbon dust 5 ~ 8%, pine trunk wood powder 3 ~ 7%, elm trunk wood powder 4 ~ 7% and polyethylene 70 ~ 80%; Polyethylene, as thermoplastic resin, has extraordinary electrical insulation capability, but due to its hot strength lower, creep resistance is poor, therefore adds wood fibre and glass fiber to improve its combination property.Select pine and elm wood powder main because tough and tensile, elasticity better, and intensity is moderate with hardness, can well supplement poly performance inferior position, and meanwhile, pine wood powder and the acquisition of elm wood powder are simply, with low cost, are more suitable for suitability for industrialized production; Add glass fiber mainly due to its good insulating, heat resistance is strong, corrosion resistance good, mechanical strength is high, although large shortcoming of enbrittling, is combined produces synergisticing performance with polyethylene and wood powder, increases intensity and hardness, and overall performance is excellent.
The glass fiber of composite tube strengthening layer is sandwich construction, first floor is long glass fibres 45 degree of organization levels, and the second layer is longitudinal glass layer, and third layer is hoop glass layer, 4th layer is longitudinal glass layer, and layer 5 is long glass fibres 45 degree of braids; The second layer is 75% to the 4th layer of longitudinal glass fiber accounting, and hoop glass fiber accounting is 25%.
Cushion coat is mainly used in cushioning the deformation that other each layers produce under condition of different temperatures, promotes the stability of overall tubing, specifically selects: EP rubbers 80 ~ 90%, nano silicon 5 ~ 10%, carbon fiber 5 ~ 10%; Wherein, EP rubbers is that density is lower and a kind of rubber that fillibility is higher, can add other materials to balance cost, be suitable for suitability for industrialized production, meanwhile, EP rubbers has excellent electrical insulation capability, corona resistance, water-fast steam performance and heat resistance, therefore, be the optimal selection of cushion coat; But, in order to avoid causing cushion coat too soft due to its too high fillable, therefore nano silicon and carbon fiber is added to increase its strength character, but it should be noted, if when only adding nano silicon or only add carbon fiber, its hardness enhancing rate is lower than 5%, and under equivalent condition, the two adds fashionable simultaneously, hardness enhancing rate is greater than 15%, and nano silicon and carbon fiber create the performance of Synergistic in EP rubbers.
Outer due to outside exposed for a long time, therefore, require higher to its stability, corrosion resistance, specifically select: MgO, 3 ~ 5%; Cr 2o 3, 0.1 ~ 0.15%; MnO 2, 2.3 ~ 2.5%, V 2o 5, 2.3 ~ 2.5%, TiO 2, 5.3 ~ 5.6%, CuO, 3.1 ~ 3.3%, surplus is resin.
Composite material substation framework of the present invention is compared with concrete frame with Steel Structure, mainly contains following advantage:
(1) electrical insulation capability is good, can reduce frame girder span, reduces floor space;
(2) high-strength light, facilitates framework to transport and installs;
(3) antifouling, anticorrosion, ageing-resistant performance are good, improve framework application life, can reduce frequency of maintenance etc.
Below in conjunction with instantiation, composite tube effect of the present invention is proved further:
The basic parameter of table 1 composite tube
The technical data of table 2 composite tube and steel pipe contrasts
Pilot project Q235 steel Example one Example two Example three
Bending strength MPa ~235 1140 1230 1210
Bending modulus GPa ~235 55 63 65
Hot strength MPa ~235 955 1058 1077
Compressive strength MPa ~235 530 542 526
Hydrophobicity θ av Without hydrophobicity > 5 °, has hydrophobicity > 6 °, has hydrophobicity > 6 °, has hydrophobicity
Surface resistivity Ω 10 -7Ω 10 13~10 16 10 13~10 16 10 13~10 16
Dielectric loss ‰ - ~3.0 ~2.5‰ ~2.5‰
Creepage trace - >=2.5 grades >=2.5 grades >=2.5 grades
Leakage Current mA - 0.05 0.03 mA 0.02 mA
Drench with rain withstand voltage kV/m - ~160 ~160kV/m ~160kV/m
Pollution flashover voltage kV/m - ~38 ~38kV/m ~38kV/m
Table 3110kV composite material substation framework and steel pipe pole technical data contrast (double loop, straight line pole)
Note: solid layer method is defiled, equivalent salt density 0.1mg/cm2; Steel tube tower adopts 9 XP-70 insulators.
Be not difficult to find out in conjunction with above-mentioned data, composite material substation framework provided by the invention compared with conventional steel tower:
Lightweight.Composite material stretches, bending and compressive strength all can reach more than 900Mpa, and higher than common iron and generally meet material (see table 2), density is generally less than 2.0g/cm 3, be about 1/4 of steel, therefore, composite material substation framework is conducted oneself with dignity significantly lower than irony shaft tower, more much smaller than concurrent.Such as, 110kV composite material substation framework compare steel pipe pole under same design moment of flexure can the nearly 40%(of loss of weight in table 3), and the weight of 10kV composite material electric pole is approximately only 1/5 of concurrent, transport and the difficulty of construction of shaft tower is reduced largely, improve power grid construction efficiency, in the newly-built circuit of the repairing of falling tower operation and the transport difficult such as plateau, hills area that geological disaster causes, highlight the material technology advantage of its high-strength light.Meanwhile, composite material is because modulus of elasticity is lower than iron and steel and concrete, and intensity is higher, from mechanical failure angle, admissible deformation quantity is larger, this makes composite material substation framework under paroxysmal large load-up condition, large deformation occur and not be destroyed, and load can reply deformation after eliminating voluntarily.
Corrosion-resistant.Sandwich construction, especially outermost resin composite material have the dielectric corrosion performances such as excellent acid and alkali resistance, salt and organic solvent, and in 5% hydrochloric acid solution, corrosion still can retain the mechanical property of more than 90% after 30 days, and steel very easily corrode in sour environment.Therefore, the application of composite material substation framework can reduce the extent of corrosion of traditional irony shaft tower, extends shaft tower application life, reduces shaft tower maintenance cost.
Electrical insulation properties is good.Experimental data shows, composite material surface resistivity is usually above 1.0 × 10 13Ω, anti creepage trace can reach 2.5 grades, leakage current after making moist still is in a microampere rank, drench with rain and pollution flashover voltage reach 160kV/m and 38kV/m(respectively in table 2), effectively increase the insulation creep distance of shaft tower, and after composite material cross arm surface crimping silicon rubber umbrella skirt, suspension insulator can be cancelled, composite material substation framework is made effectively to prevent windage yaw, icing and contamination flashover aspect have great advantage, and thunderbolt is compared traditional shaft tower significantly promote (see table 3) with operation flashover voltage, the application that simulation result also shows composite material substation framework can reduce the lightning outage rate of more than 40%.
Line corridor is narrow, and shaft tower height is low.Due to larger phase ground insulation distance and the structural advantage cancelling suspension insulator, in 110kV above circuit, apply composite material substation framework can effectively reduce line corridor width, and reduce shaft tower height, such as, 110, 220kV composite material substation framework is compared to steel pipe pole, horizontal spacing can reduce 1.4m and 2.6m(composite material substation framework better effects if respectively), 500kV composite material cross arm compares angle cross arm can reduce shaft tower horizontal spacing 5.6m, effectively save line construction land used, simultaneously, circuit has higher dielectric level.In addition, after cancelling suspension insulator, whole tower height degree also decreases, and contributes to reducing tower weight and foundation construction amount further.
Safeguard few.The corrosion resistance characteristic of composite material substation framework makes to it eliminate in maintenance works such as corrosion area shaft tower coating protections; and the mode that its higher dielectric level and full skirt are laterally arranged enhances the durability against pollution of circuit; reduce insulator cleaning frequency; decrease the flashover fault rate of circuit simultaneously, reduce maintenance workload to a certain extent.
Be not difficult to find out by above-mentioned performance indications, adopt the composite material substation framework performance of structure of the present invention and materials processing very excellent, be embodied in the following aspects: line corridor width is little; Lightweight, easily transport installation; Can reply voluntarily under large deformation, wind loading rating is strong; Dielectric level is high, effectively can reduce circuit thunderbolt, filthy and icing flashover risk, reduce maintenance workload; Corrosion-resistant, maintenance cost is low.

Claims (10)

1. a composite material substation framework, the insulation crossbeam comprising support column and arrange on the support columns, it is characterized in that: described support column comprises composite tube, insulation crossbeam comprises the composite material pole adopting pultrude process to prepare, crimping insulation full skirt on the outer wall of composite material pole; Described composite tube comprises the basalis, strengthening layer, cushion coat and the skin that set gradually from the inside to the outside, and described basalis, strengthening layer, cushion coat and outer field thickness and pipe external diameter ratio are 0.5 ~ 0.6:0.1 ~ 0.2:0.1 ~ 0.2:0.1 ~ 0.2:15; Described basalis is specifically: Mg, 4 ~ 6%; Cr, 0.1 ~ 0.2%; Mn, 2.5 ~ 3.0%, V, 2.0 ~ 2.5%, Ti, 5.0 ~ 5.5%, surplus is Al; Described strengthening layer is specifically: glass fiber 8 ~ 10%, carbon dust 5 ~ 8%, pine trunk wood powder 3 ~ 7%, elm trunk wood powder 4 ~ 7% and polyethylene 70 ~ 80%; Described cushion coat is specifically: EP rubbers 80 ~ 90%, nano silicon 5 ~ 10%, carbon fiber 5 ~ 10%; Described skin is specifically: MgO, 3 ~ 5%; Cr 2o 3, 0.1 ~ 0.15%; MnO 2, 2.3 ~ 2.5%, V 2o 5, 2.3 ~ 2.5%, TiO 2, 5.3 ~ 5.6%, CuO, 3.1 ~ 3.3%, surplus is resin.
2. composite material substation framework according to claim 1, it is characterized in that: described support column is two groups of single poles, often group single pole comprises the composite tube that at least two-stage adopts braiding winding pultrude process to prepare, and adopts Flange joint between composite tube at different levels.
3. composite material substation framework according to claim 1, it is characterized in that: described support column is four groups, every two groups is a herringbone support column, each herringbone support column comprises at least one-level stull and level Four adopts the composite tube weaving and be wound around pultrude process and prepare, adopt Flange joint between composite tube at different levels, on the flange of insulation crossbeam side, be provided with the fixing hole for fixing stull.
4. composite material substation framework according to claim 1, is characterized in that: described insulation crossbeam comprises two short composite material poles and a long composite material pole; Long composite material pole two ends are provided with long composite material pole flange; Two short composite material poles are provided with short composite material pole flange for the one end be connected with long composite material pole, long composite material pole flange is fixedly connected with by bearing with short composite material pole flange, and bearing is fixing on the support columns for the crossbeam that will insulate; Described two short composite material poles are provided with hanging point away from the two ends of long composite material pole, are provided with hanging point in the middle part of long composite material pole; Silicon rubber umbrella skirt is provided with outside described long composite material pole, short composite material pole.
5. composite material substation framework according to claim 1, is characterized in that: adopt Flange joint between described composite tube, the end winding support of two-stage composite tube junction has flange, is provided with cable quadrant between two-stage flange; Described cable quadrant comprises fixed part and bracing wire parts, fixed part and Flange joint end face suitable, the angle between bracing wire parts and fixed part is 110 ° ~ 130 °, bracing wire parts is provided with the wiring holes for connecting stay wire; Described stull is triangular steel, and triangular steel two ends offer connecting hole, is coordinated be fixed on flange by triangular steel by screws bolts.
6. composite material substation framework according to claim 4, it is characterized in that: described bearing comprises the first top flange pipe, the first top flange disk, the first top flange stiffener, top flange flat board, the second top flange pipe, the second top flange disk, first flange pipe two ends, top is respectively arranged with the first top flange disk, first top flange pipe and two first push ups to be respectively arranged with between flange disk and multiplely push ups flange stiffener for increasing first of intensity, and multiple first top flange stiffener to push up centered by flange pipe central axis circumferentially shape by first and distributes; First top flange pipe is by fixing with top flange flat board, flange dull and stereotyped upper surface in top is fixedly connected with top flange arch sheet, flange dull and stereotyped soffit and second in top pushes up flange pipe and is connected, second top flange pipe is provided with the second top flange disk away from the dull and stereotyped side of top flange, second top flange pipe and second push up to be respectively arranged with between flange disk and multiplely push up flange stiffener for increasing second of intensity, and multiple second top flange stiffener to push up centered by flange pipe central axis circumferentially shape by second and distributes; Described first top flange pipe is used for fixed insulation crossbeam, and the second top flange pipe is for connecting support column; When second flange pipe is two, between two second top flange pipes, be provided with top flange angle board; Described first top flange pipe, the first top flange disk, the first top flange stiffener, top flange flat board, the second top flange pipe, the second top flange disk, top flange arch sheet, the second top flange stiffener, the mass ratio pushed up between flange angle board are 9.9:4.4:0.2:9.0:4.1:3.8:1.7:0.2:1.4.
7. composite material substation framework according to claim 4, is characterized in that: the mass ratio between described long composite material pole, long composite material pole hanging point, long composite material pole full skirt and long composite material pole flange is 64.1:11.2:4.1:14.1; Mass ratio between described short composite material pole, short composite material full skirt, short composite material pole hanging point and short composite material pole flange is 33.1:4.7:10.8:14.1.
8. the composite material substation framework according to claim 1 to claim 7 any one, it is characterized in that: when described each group of support column comprises two-stage or two-stage above composite tube, the mass ratio being used for the flange is connected with bearing near insulation the first composite tube of crossbeam and this composite tube is 14.3:9.3, is 14.3:10.4 near the composite tube of insulation crossbeam and this composite tube for the mass ratio of the flange be connected with the composite tube of next stage; Bottom composite tube is 30.2:9.3 with the mass ratio of the flange for connecting with its upper level composite tube be connected, and the mass ratio of bottom composite tube and flange in the bottom is 30.2:36; Between described first composite tube and next stage composite tube, the first triangular steel of Flange joint and the mass ratio of this flange are the 1.9:3.4 of 1.9:10.4, the mass ratio between the first triangular steel and next stage triangular steel.
9. the composite material substation framework according to claim 1 to claim 7 any one, is characterized in that: described composite tube comprises the basalis, strengthening layer, cushion coat and the outer field thickness that set gradually from the inside to the outside and pipe external diameter ratio is 0.55:0.15:0.2:0.1:15; Described basalis is prepared from by aluminium alloys, al alloy component specifically: Mg5.3%; Cr1.4%; Mn2.6%, V2.5%, Ti5.5%, surplus is Al; Described strengthening layer is specifically: glass fiber 9%, carbon dust 7%, pine trunk wood powder 6%, elm trunk wood powder 5% and polyethylene 73%; Described cushion coat is specifically: EP rubbers 83%, nano silicon 8%, carbon fiber 9%; Described skin is specifically: MgO3%; Cr 2o 30.1%; MnO 22.4%, V 2o 52.5%, TiO 25.5%, CuO3.3%, surplus is resin.
10. the composite material substation framework according to claim 1 to claim 7 any one, is characterized in that: described composite tube comprises the basalis, strengthening layer, cushion coat and the outer field thickness that set gradually from the inside to the outside and pipe external diameter ratio is 0.6:0.2:0.1:0.1:15; Described basalis is specifically: Mg4%; Cr0.2%; Mn3.0%, V2.4%, Ti5.3%, surplus is Al; Described strengthening layer is specifically: glass fiber 10%, carbon dust 5%, pine trunk wood powder 3%, elm trunk wood powder 4% and polyethylene 78%; Described cushion coat is specifically: EP rubbers 85%, nano silicon 7%, carbon fiber 8%; Described skin is specifically: MgO4%; Cr 2o 30.13%; MnO 22.5%, V 2o 52.5%, TiO 25.6%, CuO3.1%, surplus is resin.
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