CN104563578A - Combined framework pillar for 500kV transformer substation and mounting method of combined framework pillar - Google Patents
Combined framework pillar for 500kV transformer substation and mounting method of combined framework pillar Download PDFInfo
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- CN104563578A CN104563578A CN201410853510.3A CN201410853510A CN104563578A CN 104563578 A CN104563578 A CN 104563578A CN 201410853510 A CN201410853510 A CN 201410853510A CN 104563578 A CN104563578 A CN 104563578A
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- truss column
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/22—Sockets or holders for poles or posts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
- E04H5/04—Transformer houses; Substations or switchgear houses
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Abstract
The invention provides a combined framework pillar for a 500kV transformer substation and a mounting method of the combined framework pillar. The combined framework pillar comprises a framework main connector and framework legs, the same ends of two opposite supporting parts are fixedly connected to form the herringbone framework main connector, a cross supporting part is fixedly connected between the two supporting parts, the framework legs are fixedly connected with the two supporting parts respectively, a framework transition connector is arranged between two opposite framework legs, an end connecting plate is fixedly connected at the top of the framework main connector, and a mounting through hole is formed in the end connecting plate. The mounting method mainly includes the steps: pouring and wrapping by the aid of concrete on the mounting portions of the framework legs of the tail ends of the combined framework pillar to form concrete protection boots. In an integrated framework for the 500kV transformer substation, the assembly efficiency of the integrated framework is improved, resistant-lateral rigidity, wind load resistant and anti-shake requirements of the integrated framework can be met, and safe and reliable running of the 500kV transformer substation is ensured.
Description
Technical field
The present invention relates to a kind of truss column, especially relate to a kind of combined type truss column for 500kV transformer station and mounting method thereof.
Background technology
System schema at the beginning of 500kV Substation Design and electrical arrangement need the current period brownout operation considering 500kV transformer station, carry out the brownout operation of 220kV grade in advance, are finally transitioned into the normal operation of 500kV grade.Before 500kV substation operation, need the construction first carrying out cable tunnel according to the safety belt electrical distance between cable, station cable is embedded in cable tunnel, the floor space of cable laying will be caused like this to increase, thus compressor station district enclosure wall inner area, be unfavorable for saving valuable land resources; And the engineering quantity of cable tunnel construction is very large, and construction cost is high, causes the overall investment cost of 500kV transformer station to increase.
For the 500kV transformer station built in High aititude, high earthquake intensity area, the difficulty of construction of integrated form framework significantly increases, construction cost is more increased, and, the wind-force of high altitude localities is usually more powerful, it is larger to the security threat of integrated form framework, and in addition, seismic force effects also can bring damaging influence to the safe operation of integrated form framework.Therefore, in order to ensure safety, the reliability service of 500kV transformer station in High aititude, high earthquake intensity area better, must ensure that integrated form framework wherein has enough anti-side rigidity, opposing wind load and geological process, and frame girder, truss column are as the most important components of integrated form framework, the performance of its anti-side rigidity, opposing wind load and geological process is most important for the safety of integrated form framework.
Summary of the invention
The technical problem to be solved in the present invention is: for prior art Problems existing, a kind of combined type truss column for 500kV transformer station and mounting method thereof are provided, guarantee that truss column is easy for installation, and there is enough anti-side rigidity, opposing wind load and anti-seismic performance, ensure safety, the reliability service of 500kV transformer station.
The technical problem to be solved in the present invention realizes by the following technical solutions: for the combined type truss column of 500kV transformer station, comprise the main connector of framework and framework socle, the main connector of described framework to be composed of a fixed connection herringbone structure by identical one end of relative two support members, Cross stay is fixedly connected with between described two support members, described framework socle is connected and fixed with two support members respectively, between relative two framework socles, framework transition piece is set, the main connector top of described framework is fixedly connected with end bracket, end bracket is offered installation through hole.
Preferably, described framework transition piece comprises connection end and is connected end plate, and described connection end is fixedly connected with framework socle, and described connection end plate is fixedly connected with framework socle, connection end respectively, and connection end plate offers bolt hole.
Preferably, described framework socle comprises some sections, is connected and fixed between two sections of adjacent framework socles by the second adpting flange.
Preferably, be fixedly connected with some annulars and embrace muscle being positioned at the installation portion on the framework socle bottom truss column.
Preferably, each section of described framework socle is fixedly connected with the connection end of flanged dish.
Preferably, the tangent value of the angle between described framework socle and horizontal mounting surface is 7-12.
As above for the mounting method of the combined type truss column of 500kV transformer station, pass through concreting coated formation concrete protective boots at the installation portion of the framework socle of combined type truss column end.
Preferably, when carrying out concreting operation to framework socle installation portion, preset reinforced mesh in concrete protective boots.
Preferably, described framework socle is round steel pipe, offers the perfusion through hole communicated with framework socle inner chamber at its installation portion, by perfusion through hole to concrete perfusion in framework socle inner chamber, until perfusion through hole is completely enclosed.
Preferably, described framework socle connects the gutter communicated with framework socle inner chamber, cobble heap capsule is set at the port of export of gutter.
Compared with prior art, the invention has the beneficial effects as follows: the combined type truss column of this herringbone structure can be connected and fixed with other components easily by high-strength bolt, after its installation is fixing, itself there is higher anti-side rigidity, opposing wind load and anti-seismic performance, therefore, this combined type truss column is used in 500kV transformer station integrated form framework, not only efficiency of assembling can be improved, the requirement of the anti-side rigidity of integrated form framework, opposing wind load and anti-seismic performance can also be met, thus guarantee safety, the reliability service of 500kV transformer station.
Accompanying drawing explanation
Fig. 1 is a kind of constructional drawing (when 500kV runs) of the integrated form framework for the outlet of 500kV transformer station, inlet wire, transition.
Fig. 2 is a kind of constructional drawing (when 220kV runs) of the integrated form framework for the outlet of 500kV transformer station, inlet wire, transition.
Fig. 3 is the partial enlarged drawing at A place in Fig. 1.
Fig. 4 is the partial enlarged drawing at B place in Fig. 1.
Fig. 5 is the top view of the first main transformer inlet wire frame girder in Fig. 1.
Fig. 6 is the lateral view of the first main transformer inlet wire frame girder in Fig. 1.
Fig. 7 is the partial enlarged drawing at C place in Fig. 5.
Fig. 8 is C1-C1 direction view in Fig. 7.
Fig. 9 is C2-C2 direction view in Fig. 7.
Figure 10 is D-D direction view in Fig. 5.
Figure 11 is the front view of outlet structure post in Fig. 1.
Figure 12 is the partial enlarged drawing at F place in Figure 11.
Figure 13 is G-G direction view in Figure 12.
Figure 14 is H-H direction view in Figure 13.
Figure 15 is J-J direction view in Figure 11.
Figure 16 is K-K direction view in Figure 15.
Figure 17 is the partial enlarged drawing at N place in Figure 11.
Figure 18 is the mounting structure figure of outlet structure post in Figure 11.
Mark in figure: 1-main transformer inlet wire, 2-first end dagger, 3-takes shelter from the thunder terminal, 4-lightning rod, 5-first main transformer inlet wire frame girder, 6-first outlet structure beam, 7-second end dagger, 8-First Transition frame girder, 9-First Transition truss column, 10-second transition frame girder, 11-second outlet structure beam, 12-outlet structure post, 13-the 3rd transition frame girder, 14-outlet, 15-second transition truss column, 16-the 4th transition frame girder, 17-first main transformer inlet wire truss column, 18-the 5th transition frame girder, 19-second main transformer inlet wire frame girder, 20-second main transformer inlet wire truss column, 21-first aerial cable, 22-second aerial cable, 23-the 3rd aerial cable, 24-reinforced mesh, 25-concrete protective boots, 26-gutter, 27-cobble heap capsule, 501-installing plate, 502-first girder, 503-first adpting flange, 504-first support member, 505-second support member, 506-first gusset piece, 507-the 3rd support member, 508-second girder, 509-the 3rd girder, 510-shrouding, 511-rests the head on plate, 512-first link, 513-second link, the main connector of 120-framework, 121-framework socle, 122-second adpting flange, 123-framework transition piece, 124-supporting, 125-connection end, 126-stiffener, 127-connects end plate, 128-embraces muscle, 1201-end bracket, 1202-second reinforcing rib, 1203-support member, 1204-Cross stay, 1205-second gusset piece, 1206-pours into through hole.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with the drawings and specific embodiments, the present invention is described in detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As Fig. 1, one shown in Fig. 2 is used for the outlet of 500kV transformer station, inlet wire, the integrated form framework of transition, mainly comprise first end dagger 2, first main transformer inlet wire frame girder 5, first outlet structure beam 6, second end dagger 7, First Transition frame girder 8, First Transition truss column 9, second transition frame girder 10, second outlet structure beam 11, outlet structure post 12, 3rd transition frame girder 13, second transition truss column 15, 4th transition frame girder 16, first main transformer inlet wire truss column 17, 5th transition frame girder 18 and the second main transformer inlet wire frame girder 19 and the second main transformer inlet wire truss column 20.The first main transformer inlet wire frame girder 5 wherein, one end of first outlet structure beam 6 and the second main transformer inlet wire frame girder 19 is all connected and fixed with the second main transformer inlet wire truss column 20, first outlet structure beam 6 other end, second outlet structure beam 11 one end is all connected and fixed with the 4th transition frame girder 16, first main transformer inlet wire frame girder 5 other end and first end dagger 2 are connected and fixed, second main transformer inlet wire frame girder 19 other end and the first main transformer inlet wire truss column 17 are connected and fixed, second outlet structure beam 11 other end and outlet structure post 12 are connected and fixed, second transition frame girder 10 two ends respectively with outlet structure post 12, First Transition truss column 9 is connected and fixed, First Transition frame girder 8 is positioned at below the second transition frame girder 10, and its two ends respectively with the second end dagger 7, First Transition truss column 9 is connected and fixed, 3rd transition frame girder 13 is positioned at below the second main transformer inlet wire frame girder 19, and its two ends respectively with the second transition truss column 15, 4th transition frame girder 16 is connected and fixed, described 5th transition frame girder 18 is positioned at below the second main transformer inlet wire frame girder 19, and its two ends respectively with the second main transformer inlet wire truss column 20, first main transformer inlet wire truss column 17 is connected and fixed.
The integrated form framework adopting said structure is by the outlet structure in 500kV transformer station, transition intermediate frame and united the formed two-way in length and breadth rigid frame association structure of main transformer inlet wire framework, guaranteeing that integrated form framework has enough anti-side rigidity, under the prerequisite of opposing wind load and geological process, compact conformation, not only effectively can save the floor space of framework in 500kV transformer station, thus compressor station district enclosure wall inner area, save land resources, but also the use amount of cable can be saved, thus be conducive to the overall investment cost reducing 500kV transformer station.
Angle between the first above-mentioned main transformer inlet wire frame girder 5 and the second main transformer inlet wire frame girder 19 is 180 degree, and the angle between the first main transformer inlet wire frame girder 5 and the first outlet structure beam 6 is 90 degree, angle between first outlet structure beam 6 and the second main transformer inlet wire frame girder 19 is 90 degree, simultaneously, First Transition frame girder 8 is arranged on the first main transformer inlet wire frame girder 5, between second transition frame girder 10, and respectively with the first main transformer inlet wire frame girder 5, second transition frame girder 10 is mutually vertical, described second transition frame girder 10 respectively with the first outlet structure beam 6, second outlet structure beam 11 is mutually vertical, 3rd transition frame girder 13 is arranged between the second transition frame girder 10, second main transformer inlet wire frame girder 19, and mutually vertical with the first outlet structure beam 6, second outlet structure beam 11 respectively, angle between described first outlet structure beam 6 and the second outlet structure beam 11 is 180 degree, described second main transformer inlet wire frame girder 19 and the 5th transition frame girder 18 are parallel to each other, and described 5th transition frame girder 18 is mutually vertical with the first outlet structure beam 6, second outlet structure beam 11 respectively.Adopt such structure that the overall structure of this integrated form framework can be made compacter, reduce the cable use amount in 500kV transformer station further, and in required station, land area is minimum, dramatically saves on the overall investment cost of 500kV transformer station.
For 500kV transformer station, two main transformers are set usually, utilize this integrated form framework can meet the current period 220kV brownout operation of 500kV transformer station two main transformers and finally be transitioned into the normal operation of 500kV grade, specifically:
When 500kV transformer station carries out current period 220kV brownout operation, trolley line on this integrated form framework as shown in Figure 2, wherein 3 main transformer inlet wires 1 of a main transformer are connected with the first main transformer inlet wire frame girder 5,3 articles of main transformer inlet wires 1 of another main transformer are connected with the 5th transition frame girder 18, article 6, outlet 14 is corresponding with main transformer inlet wire 1 respectively, also two groups are divided into, often organize 3, wherein 3 outlets 14 of a group are connected with the first outlet structure beam 6, and 3 outlets 14 of another group are connected with the second outlet structure beam 11.Cross-over connection first aerial cable 21 between the first main transformer inlet wire frame girder 5 and the second transition frame girder 10, cross-over connection second aerial cable 22 between First Transition frame girder 8 and the second outlet structure beam 11, cross-over connection the 3rd aerial cable 23 between the 5th transition frame girder 18 and the 3rd transition frame girder 13, described second transition frame girder 10 is connected by lower wire jumper with between First Transition frame girder 8, described 3rd transition frame girder 13 is connected by upper wire jumper with between the first outlet structure beam 6, thus can realize the conveying of current period 220kV electric power.
When 500kV transformer station is transitioned into the normal operation of 500kV grade from current period 220kV brownout operation, trolley line on this integrated form framework as shown in Figure 1, wherein 3 main transformer inlet wires 1 of a main transformer are connected with the first main transformer inlet wire frame girder 5, 3 main transformer inlet wires 1 of another main transformer are connected with the second main transformer inlet wire frame girder 19, article 6, outlet 14 is corresponding with main transformer inlet wire 1 respectively, also two groups are divided into, often organize 3, wherein 3 outlets 14 of a group are connected with the first outlet structure beam 6, 3 outlets 14 of another group are connected with the second outlet structure beam 11, 500kV electric power at a specified future date conveying can be realized.Compared with during current period 220kV brownout operation, owing to eliminating the first aerial cable 21, second aerial cable 22 and the 3rd aerial cable 23, therefore, can need according to electrical configurations in transformer station and First Transition frame girder 8, second transition frame girder 10, the 3rd transition frame girder 13 and the 5th transition frame girder 18 be dismantled, also can not dismantle.After this integrated form of employing framework, can realize being transitioned into 500kV from 220kV brownout operation easily normally to run, cable wherein carries out built on stilts construction according to the requirement of safety belt electrical distance, therefore, do not need the earthwork construction construction carrying out too much cable tunnel, engineering quantity is significantly reduced, is conducive to saving land resources valuable in 500kV transformer station, and significantly reduces the construction cost of 500kV transformer station.
In order to ensure safety, the reliability service of 500kV transformer station, first end dagger 2, the second end dagger 7 in this integrated form framework can adopt trishores post, and its shape of cross section is triangle, to improve the steadiness of integrated form framework.First Transition truss column 9 wherein, outlet structure post 12, second transition truss column 15, the 4th transition frame girder 16, first main transformer inlet wire truss column 17, second main transformer inlet wire truss column 20 adopt herringbone double support post, to reduce building materials consumption and the floor space of integrated form framework, save its construction cost.In addition, lightning-arrest terminal 3 is also fixedly connected with on the top of first end dagger 2, First Transition truss column 9, outlet structure post 12, first main transformer inlet wire truss column 17, described lightning-arrest terminal 3 top and lightning rod 4 are connected and fixed, to prevent thunder and lightning to the damaging influence of electric utility, ensure the security of operation of 500kV transformer station, reliable.
For the 500kV transformer station built in High aititude, high earthquake intensity area, the difficulty of construction of integrated form framework significantly increases, construction cost is more increased, and, the wind-force of high altitude localities is usually more powerful, it is larger to the security threat of integrated form framework, and in addition, seismic force effects also can bring damaging influence to the safe operation of integrated form framework.Therefore, in order to ensure safety, the reliability service of 500kV transformer station in High aititude, high earthquake intensity area better, must ensure that integrated form framework wherein has enough anti-side rigidity, opposing wind load and geological process, and frame girder, truss column are as the most important components of integrated form framework, the performance of its anti-side rigidity, opposing wind load and geological process is most important for the safety of integrated form framework.
Be described for the first main transformer inlet wire frame girder 5 below, as shown in Figure 5, Figure 6, the first described main transformer inlet wire frame girder 5 is combined type lattice girder, mainly comprise the first girder 502, second girder 508, the 3rd girder 509 and the first gusset piece 506 and the 3rd support member 507, the first described girder 502, second girder 508, the 3rd girder 509 are round steel pipe, can flexural strength be ensured, the gross weight of the first main transformer inlet wire frame girder 5 can be alleviated again, so that fitting operation; Described first girder 502, second girder 508, the 3rd girder 509 comprise some sections respectively, are connected and fixed between two section of first adjacent girder 502, between adjacent two section of second girder 508, between adjacent two section of the 3rd girder 509 respectively by the first adpting flange 503.Because the first girder 502, second girder 508, the 3rd girder 509 surface need to carry out zinc-plated process usually, to improve its corrosion resistance, this segmentation structure is adopted not only to be convenient to carry out zinc-plated process to the first girder 502, second girder 508, the 3rd girder 509, and be also unlikely in transportation, because of long, gross distortion occur, ensure that the splicing operation of the first main transformer inlet wire frame girder 5 is implemented smoothly.At the first girder 502, second girder 508, 3rd girder 509 is welded and fixed respectively the first gusset piece 506, between first girder 502 and the second girder 508, between second girder 508 and the 3rd girder 509, be connected and fixed respectively by the 3rd support member 507 and the first gusset piece 506 between first girder 502 and the 3rd girder 509, for easy accessibility, described 3rd support member 507 two ends are fixed by high strength exploitation respectively and between the first gusset piece 506, and by the first girder 502, second girder 508 and the 3rd girder 509 form the frame girder that cross section is acute triangle jointly, aisle is provided with in the triangular hollow chamber of frame girder, to facilitate installation, maintenance personal carries out operation.This cross section is that the frame girder of acute triangle has very strong stability, can increase substantially the anti-side rigidity of the first main transformer inlet wire frame girder 5, opposing wind load and geological process performance.First girder 502, second girder 508 is welded and fixed several the first links 512 for cable hanging wire respectively, the 3rd support member 507 between the first girder 502 and the second girder 508 is connected with several the second links 513 for cable hanging wire, as shown in Figure 10, to facilitate the first main transformer inlet wire frame girder 5 to install the operation of the cable hanging wire after fixing.
In order to improve the anti-side rigidity of the first main transformer inlet wire frame girder 5 further, opposing wind load and geological process performance, as Fig. 5, shown in Fig. 6, between the first described girder 502 and the second girder 508, between second girder 508 and the 3rd girder 509, increase respectively between first girder 502 with the 3rd girder 509 and be connected several the first support member 504 and the second support members 505, on the same side of the first main transformer inlet wire frame girder 5, several first support members 504 are parallel to each other, and high strength exploitation is passed through respectively and between the first gusset piece 506 in the two ends of the first support member 504, similarly, several second support members 505 be positioned on the first main transformer inlet wire frame girder 5 same side are also arranged in parallel, and high strength exploitation is passed through respectively and between the first gusset piece 506 in the two ends of the second support member 505.As shown in Figure 6, on the same side be made up of the second girder 508 and the 3rd girder 509, the angle between described first support member 504 and the second girder 508 is acute angle, preferably adopts 49 degree; Angle between described second support member 505 and the second girder 508 is acute angle, preferably adopts 48 degree.Such structure design can make the first support member 504 on the first main transformer inlet wire frame girder 5 same side substantially mutually vertical with between the second support member 505, thus is conducive to the anti-side rigidity of the first main transformer inlet wire frame girder 5, resists the lifting of wind load and geological process performance.
Because the setting height(from bottom) of the first main transformer inlet wire frame girder 5 in integrated form framework is higher, welding manner should not be adopted to carry out fitting operation.In order to the installation difficulty of reduction by first main transformer inlet wire frame girder 5 of trying one's best, the first support member 504, second support member 505 wherein and the 3rd support member 507 can select angle steel, carry out bolt connection to facilitate; Installing plate 501 can be welded and fixed in advance at the first main transformer inlet wire frame girder 5 two ends, installing plate 501 offers bolt hole, be fixed by high strength exploitation, as shown in Fig. 3, Fig. 7 between the first main transformer inlet wire frame girder 5 and first end dagger 2.For guaranteeing the stability after the first main transformer inlet wire frame girder 5 installation, also can at the first main transformer inlet wire frame girder 5 welding edges fixing pillow plate 511, described pillow plate 511 is also welded and fixed with installing plate 501 simultaneously, the deep-slotted chip breaker matched with the first girder 502 or the second girder 508 external diameter offered by pillow plate 511, as shown in Fig. 3, Fig. 9, to increase the contact area between the first main transformer inlet wire frame girder 5 and pillow plate 511, improve the reliability of welding.In order to prevent rainwater etc. from entering the first main transformer inlet wire frame girder 5 inner chamber, corrosion being caused to it, as shown in Fig. 3, Fig. 8, fixing shrouding 510 at the first girder 502, second girder 508, the 3rd girder 509 openend sealing.
For the first outlet structure beam 6, First Transition frame girder 8, second transition frame girder 10, second outlet structure beam 11, the 3rd transition frame girder 13, the 4th transition frame girder 16 and the 5th transition frame girder 18 and the second main transformer inlet wire frame girder 19, all can implement with reference to the structure of the first above-mentioned main transformer inlet wire frame girder 5, not repeat one by one at this.
Be described for outlet structure post 12 below, as shown in Figure 11, Figure 12, Figure 13, described outlet structure post 12 is combined type truss column, mainly comprise the main connector 120 of framework and framework socle 121, the main connector 120 of described framework is herringbone structure, be weldingly fixed on the relative both sides of the second gusset piece 1205 by two support members 1203 respectively, be welded and fixed end bracket 1201 on support member 1203 top, described end bracket 1201 offers several bolts hole; Between end bracket 1201 and support member 1203, be welded and fixed the second reinforcing rib 1202, described second reinforcing rib 1202 preferably adopts right-angled trapezium steel plate, as shown in figure 14.In order to ensure that the main connector 120 of framework is unlikely generation gross distortion in transport, installation process, between two support members 1203, Cross stay 1204 can be welded and fixed with inserting mode, as shown in figure 12.Described framework socle 121 arranges two, be connected and fixed by the second adpting flange 122 with two support members 1203 respectively, the framework transition piece 123 that several are parallel to each other can be set between two framework socles 121, can ensure that the angle between two framework socles 121 keeps certain by framework transition piece 123, thus guarantee that outlet structure post 12 entirety gross distortion does not occur.Described framework socle 121, framework transition piece 123, support member 1203 and Cross stay 1204 all can select round steel pipe, can ensure its flexural strength, can alleviate again the gross weight of outlet structure post 12, be convenient to fitting operation.
Conveniently outlet structure post 12 and other frame girders are interconnected, above-mentioned framework transition piece 123 can also adopt structure as shown in figure 15, mainly comprise connection end 125 and be connected end plate 127, described connection end 125 adopts round steel pipe, and be welded and fixed with inserting mode with framework socle 121, described connection end plate 127 is welded and fixed with framework socle 121, connection end 125 respectively, and connection end plate 127 offers several bolts hole.As shown in Figure 4, described outlet structure post 12 can be fixed by high strength exploitation easily and between the second outlet structure beam 11 by the connection end plate 127 on framework transition piece 123.In order to improve the weight capacity of framework transition piece 123, as shown in Figure 15, Figure 16, stiffener 126 is welded and fixed with being connected between end plate 127 at connection end 125, stiffener 126 is offered the deep-slotted chip breaker matched with connection end 125 external diameter, as shown in figure 16, to increase the contact area between connection end 125 and stiffener 126, improve the reliability of welding.
For the integrated form framework built in High aititude, high earthquake intensity area, the installation difficulty of outlet structure post 12 wherein must be reduced as far as possible, for this reason, above-mentioned framework socle 121 can be designed to segmentation structure, be connected and fixed by the second adpting flange 122 between two sections of adjacent framework socles 121, each section of framework socle 121 be wherein welded and fixed the connection end 125 of flanged dish with inserting mode.Because framework socle 121 surface needs to carry out zinc-plated process usually, to improve its corrosion resistance, this segmentation structure is adopted not only to be convenient to carry out zinc-plated process to framework socle 121, and be also unlikely in transportation, because of long, gross distortion occur, ensure that the splicing operation of outlet structure post 12 is implemented smoothly.Because the height of outlet structure post 12 is higher, more close to horizontal mounting surface, spacing between two framework socles 121 is wherein larger, for ensureing stability, the reliability after the installation of outlet structure post 12, the angle of two framework socles 121 respectively and between horizontal mounting surface should not be too little, through calculating, the tangent value preferably 7-12 of the angle between each framework socle 121 and horizontal mounting surface, as shown in figure 11.When spacing between relative two framework socles 121 is excessive, connection end 125 on it does not directly connect by high-strength bolt, now, the supporting 124 of the flanged dish of high strength exploitation can be passed through between relative two connection ends 125, as shown in figure 11.
For First Transition truss column 9, second transition truss column 15, the 4th transition frame girder 16 and the first main transformer inlet wire truss column 17 and the second main transformer inlet wire truss column 20, all can implement with reference to the structure of above-mentioned outlet structure post 12, not repeat one by one at this.
Due to the stressed supporting part that outlet structure post 12 is important, its install after steadiness very big to the anti-side rigidity of outlet structure post 12 entirety, opposing wind load and geological process performance impact.For this reason, installation exercise can be carried out according to structure as shown in figure 18 to outlet structure post 12.Specifically:
First, the entirety splicing operation of outlet structure post 12 is completed on the ground.As shown in figure 11, framework socle 121 and the main connector 120 of framework are fixed by the second adpting flange 122 and high strength exploitation, the connection end 125 on relative both sides framework socle 121 is connected and fixed by supporting 124 correspondence.After outlet structure post 12 entirety splicing operation completes, crane just can be utilized to carry out lifting operation to outlet structure post 12.
Then; by crane outlet structure post 12 sling and be transferred to the installation site of specifying; framework socle 121 root of C30 pea gravel concreten to outlet structure post 12 end is utilized to build operation; concrete protective boots 25 are formed at framework socle 121 root; by the installation foundation of concrete protective boots 25 as outlet structure post 12; the installation steadiness of framework socle 121 can be strengthened, and prevent outlet structure post 12 from rear generation sinking distortion being installed.
Break to prevent concrete protective boots 25; when carrying out concreting operation to framework socle 121 root; can in concrete protective boots 25 preset reinforced mesh 24; as shown in figure 18; build due to reinforced mesh 24 and concrete protective boots 25 and be integrated, significantly can improve the cracking resistance of concrete protective boots 25.Consider that framework socle 121 adopts round steel pipe, as shown in figure 18, the perfusion through hole 1206 communicated with framework socle 121 inner chamber is offered at framework socle 121 root, connect at framework socle 121 root the PVC drain pipe 26 communicated with framework socle 121 inner chamber simultaneously, cobble heap capsule 27 is set at the port of export of gutter 26.C30 concrete can be poured in framework socle 121 root inner chamber, until perfusion through hole 1206 is completely enclosed, to improve the installation rigidity of framework socle 121 root by perfusion through hole 1206.Due to some rainwater may be infiltered in framework socle 121 inner chamber, the rainwater in framework socle 121 inner chamber can be discharged in time by gutter 26, avoid causing potential safety hazard because of rainwater corrosion framework socle 121 to outlet structure post 12, cobble heap capsule 27 wherein can prevent the port of export of gutter 26 from blocking.In order to improve the drawknot intensity between concrete protective boots 25 and framework socle 121; some the annulars be parallel to each other can be welded and fixed at the installation portion of framework socle 121 and embrace muscle 128; as shown in Figure 17, Figure 18; by embrace muscle 128 not only can Concrete Structure protection boots 25 and framework socle 121 between frictional force; improve the pulling test strength of framework socle 121; mechanical stiffness and the cracking resistance of framework socle 121 installation portion can also be strengthened, thus the anti-side rigidity of further raising outlet structure post 12 entirety, opposing wind load and geological process performance.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, it should be pointed out that all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. for the combined type truss column of 500kV transformer station, it is characterized in that: comprise the main connector of framework (120) and framework socle (121), the main connector of described framework (120) to be composed of a fixed connection herringbone structure by identical one end of relative two support members (1203), Cross stay (1204) is fixedly connected with between described two support members (1203), described framework socle (121) is connected and fixed with two support members (1203) respectively, framework transition piece (123) is set between relative two framework socles (121), the main connector of described framework (120) top is fixedly connected with end bracket (1201), end bracket (1201) offers installation through hole.
2. the combined type truss column for 500kV transformer station according to claim 1, it is characterized in that: described framework transition piece (123) comprises connection end (125) and is connected end plate (127), described connection end (125) is fixedly connected with framework socle (121), described connection end plate (127) is fixedly connected with framework socle (121), connection end (125) respectively, and connection end plate (127) offers bolt hole.
3. the combined type truss column for 500kV transformer station according to claim 1, it is characterized in that: described framework socle (121) comprises some sections, be connected and fixed by the second adpting flange (122) between two sections of adjacent framework socles (121).
4. the combined type truss column for 500kV transformer station according to claim 3, is characterized in that: be fixedly connected with some annulars and embrace muscle (128) being positioned at the installation portion on the framework socle (121) bottom truss column.
5. the combined type truss column for 500kV transformer station according to claim 3, is characterized in that: the connection end (125) being fixedly connected with flanged dish on each section of described framework socle (121).
6. the combined type truss column for 500kV transformer station according to any one of claim 1-5, is characterized in that: the tangent value of the angle between described framework socle (121) and horizontal mounting surface is 7-12.
7. the mounting method of the combined type truss column for 500kV transformer station as described in any one of claim 1-6, is characterized in that: pass through concreting coated formation concrete protective boots (25) at the installation portion of the framework socle (121) of combined type truss column end.
8. the mounting method of the combined type truss column for 500kV transformer station according to claim 7; it is characterized in that: when carrying out concreting operation to framework socle (121) installation portion, preset reinforced mesh (24) in concrete protective boots (25).
9. the mounting method of the combined type truss column for 500kV transformer station according to claim 7 or 8, it is characterized in that: described framework socle (121) is round steel pipe, the perfusion through hole (1206) communicated with framework socle (121) inner chamber is offered at its installation portion, by perfusion through hole (1206) to concrete perfusion in framework socle (121) inner chamber, until perfusion through hole (1206) is completely enclosed.
10. the mounting method of the combined type truss column for 500kV transformer station according to claim 9, it is characterized in that: described framework socle (121) above connects the gutter (26) communicated with framework socle (121) inner chamber, cobble heap capsule (27) is set at the port of export of gutter (26).
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| CN201410853510.3A CN104563578A (en) | 2014-12-31 | 2014-12-31 | Combined framework pillar for 500kV transformer substation and mounting method of combined framework pillar |
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| CN201410853510.3A CN104563578A (en) | 2014-12-31 | 2014-12-31 | Combined framework pillar for 500kV transformer substation and mounting method of combined framework pillar |
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| CN105239817A (en) * | 2015-10-31 | 2016-01-13 | 国家电网公司 | Composite material power transformation framework |
| CN107591999A (en) * | 2017-11-03 | 2018-01-16 | 中国电力工程顾问集团西南电力设计院有限公司 | ± 800kV current conversion station DC fields low-voltage equipment mounting structures |
| CN107863743A (en) * | 2017-11-03 | 2018-03-30 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of 50Hz traps surge arrester support structure |
| CN108930222A (en) * | 2018-07-18 | 2018-12-04 | 广西大学 | Camber consolidates triangle arch bridge |
| CN110359756A (en) * | 2019-07-23 | 2019-10-22 | 中国电建集团山东电力建设有限公司 | 750kV booster stations framework installation method |
| CN110700679A (en) * | 2019-08-27 | 2020-01-17 | 中国铁塔股份有限公司盐城市分公司 | Secondary pouring method for tower foot of communication iron tower |
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Application publication date: 20150429 |