CN105715092A - Application of nodular cast iron pipes to combined tower for power transmission - Google Patents
Application of nodular cast iron pipes to combined tower for power transmission Download PDFInfo
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- CN105715092A CN105715092A CN201610087870.6A CN201610087870A CN105715092A CN 105715092 A CN105715092 A CN 105715092A CN 201610087870 A CN201610087870 A CN 201610087870A CN 105715092 A CN105715092 A CN 105715092A
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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
- E04H12/02—Structures made of specified materials
- E04H12/08—Structures made of specified materials of metal
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Abstract
The invention provides application of nodular cast iron pipes to a combined tower for power transmission.The combined tower for power transmission comprises main materials, auxiliary materials and connecting components.The main materials comprise main material pipes.The auxiliary materials comprise auxiliary material pipes.The connecting components comprise pipe hoops and hollow balls.The combined tower is characterized in that the main materials, the auxiliary materials and the connecting components are all the nodular cast iron pipes matched in size and structure.All the existing combined towers for power transmission are made of nodular cast iron materials, on the premise that the application performance of the pipe tower is not reduced, cost is reduced, construction is convenient, the overall corrosion resistance of the pipe tower is improved, the service life of the power transmission and transformation pipe assembled tower is prolonged accordingly, and the requirement on the full life cycle of power is met.
Description
Technical field
The present invention relates to the application in transmission of electricity combined column of a kind of ductile iron pipe, belong to power industry technologies field.
Technical background
At present, domestic power transmission and transformation pipe combined column all adopts carbon steel material, carbon steel pipe combined column Problems existing: 1) poor corrosion resistance of material, in order to improve the corrosion resisting property of carbon steel pipe combined column, galvanizing and allumen etc. is adopted to carry out surface anticorrosion process, but still electric power Life cycle requirement cannot be met, and shorter at resistance to marine atmosphere and industrial atmospheric environment life-span, process must adopt secondary even repeatedly preservative treatment under arms.It addition, energy consumption is high and environment is produced serious secondary pollution in galvanizing and allumen process；2) high intensity carbon steel is difficulty with or is difficult to obtain, and the mechanical property that the plastic deformation of carbon steel pipe increases carbon steel pipe combined column with caliber cannot ensure.Compared with carbon steel material pipe combined column, ductile cast iron material pipe combined column has the advantage that 1) corrosion-resistant, resistance to air is 3-5 times of carbon steel, and resistance to soil corrosion is 20-30 times of carbon steel；2) construction costs is low, and material price is low and density is little, and under identical physical dimension or performance condition, only the cost of raw material reduces 15%-20%；3) strong adaptability, can meet the technology requirement in region-wide environmental condition, particularly ocean and industrial pollution district；4) cycle of being on active service is long, and the military service cycle is that carbon steel heat is zinc-plated and allumen pipe combines his 2-3 times, fully meets full military service period technique requirement；5) spheroidal graphite cast-iron is easier to realize high intensity, and when diameter is more big, the characteristic of spheroidal graphite cast-iron is more obvious.
At home, current ductile iron pipe has been widely used for municipal administration, industrial and mining establishment's feedwater, gas transmission and petroleum pipeline etc., and these application all use not as structural member, and the application on electric power is to apply as structural member, and inherently one breaks through.The preparation method that Chinese patent CN104087820 provides spheroidal graphite cast-iron transmission of electricity tube rod, adopt dispensing, cast iron melting, spheroidal graphite, cast, breed and prepare ductile iron pipe with operations such as heat treatments, multistage different-diameter pipes sequentially grafting composition tower bar, the present invention has bearing capacity height, wall thickness is thin, corrosion-resistant, the advantages such as lightweight and low cost of manufacture, its weak point be the low bearing capacity of the spheroidal graphite cast-iron tower bar that this patent provides and amount of deflection big, and the important parameter of bearing capacity and amount of deflection size power transmission and transformation tube rod exactly, technology drawback is there is when for angle pole or tension-resistant rod.
Adopt ductile iron pipe combined column structure, by special method of attachment, be possible not only to improve the intensity of pipe combined column, and amount of deflection can be reduced, can be used for voltage levels pipe combined column.At present, the domestic report that there is not yet about the application of ductile iron pipe combined column.
Summary of the invention
For the deficiencies in the prior art, the present invention provides the application in transmission of electricity combined column of a kind of ductile iron pipe.
Technical scheme is as follows:
The application in transmission of electricity combined column of a kind of ductile iron pipe, described transmission of electricity combined column includes main material, auxiliary material and coupling member；Described main material includes main material pipe, described auxiliary material includes auxiliary material pipe, and described connecting elements includes pipe collar and hollow ball；It is characterized in that, described main material, auxiliary material and coupling member are the ductile iron pipe that dimensional structure cooperates.Ductile iron pipe is applied in the main material of transmission of electricity combined column, auxiliary material and link component by the present invention, it is ensured that the high corrosion-resistant of whole ductile iron pipe combined column.
According to currently preferred, the actual components of described transmission of electricity combined column is controlled size and is determined by FEM calculation: drape plot self-supporting tower is 0.3%, anchor support and terminal self-supporting tower are 0.7%.The comprehensive transmission of electricity performance characteristics of compound tube tower, in conjunction with ductile cast iron material self character, by the Theoretical Calculation of intensity and amount of deflection etc., it is determined that the structural parameters of major-minor material.
According to currently preferred, described transmission of electricity combined column adopts mechanical joining methods, metallurgical method of attachment and chemical connection process to combine and realizes connecting.Improve the reliability of connection, be effectively ensured the various functional types of pipe tower, the technology requirement of various carrying solenoid combined column can be met completely.
According to currently preferred, described mechanical joining methods includes Flange joint, pipe collar connects and hollow ball connects.
According to currently preferred, it is nested with heating that described metallurgical method of attachment includes gas shielded welding.
According to currently preferred, described chemical connection process is the method for attachment adopting inorganic bond and organic adhesive to combine, its inorganic binder adopted is metal silicate binder, and its organic binder bond adopted is the one in thermosetting epoxy resin, phenolic resin and organic siliconresin.
According to currently preferred, in described transmission of electricity combined column, method of attachment between main material pipe adopts mechanical joining methods, metallurgical method of attachment and the chemical connection process method that combines to realize, and wherein, the preferred pipe collar of described mechanical joining methods connects.
According to currently preferred; in described transmission of electricity combined column; when the caliber of described main material pipe and auxiliary material pipe is less than or equal to 600mm; method of attachment between described main material pipe and auxiliary material pipe adopts the method that hollow ball connects and gas shielded welding combines to realize, and hollow ball is connect by logical the linking of two hemisphere and and provided gas shielded welding reinforcement；
When the caliber of described main material pipe and auxiliary material pipe is more than 600mm, between described main material pipe and auxiliary material pipe, adopt Flange joint.
According to currently preferred, the tensile strength of described connecting elements is more than 420MPa.
According to currently preferred, the control parameter of main material and auxiliary material includes caliber, wall thickness and range of error；The caliber of described main material pipe is 100-800mm, and wall thickness is 8-50mm；The caliber of described auxiliary material pipe is 60-300mm, and wall thickness is 6-30mm.The present invention comprehensively transmits electricity by the performance characteristics of pipe tower, such as electric pressure, tower head planning, span, exhale title high and total height, bearing capacity character, geographical conditions and meteorological condition etc., in conjunction with ductile cast iron material self character, by the Theoretical Calculation of intensity and amount of deflection etc., determine the structural parameters of major-minor material, including main material caliber, wall thickness and Discrepancy Control Area；Pipe collar diameter, length and wall thickness, also include flange size and thickness for pipe tower tower leg and pile foundation pipe collar；Hollow ball diameter and wall thickness.
According to currently preferred, the length of described pipe collar is 300-800mm, and the bore of pipe collar and main material pipe external diameter match, the wall thickness of pipe collar is 10-60mm, the flange in the bottom diameter of pipe collar is 600-1500mm, and thickness is 30-100mm, and the relative error of thickness is 0.1-0.5%.
According to currently preferred, described hollow ball diameter 300-1200mm, wall thickness is 15-70mm, and its perforate matches with main material pipe and auxiliary material pipe external diameter；The relative error of thickness is 0.1-0.5%.
The present invention is by setting the relevant parameter of described connecting elements, such as diameter, length, wall thickness and thickness error etc., making it coordinate, Nodular cast iron material is capable of optimum builds effect, also should control flange in the bottom size and thickness for pipe tower tower leg and pile foundation pipe collar.
Present invention additionally comprises connecting elements secondary operations.For guaranteeing the reliability connected, tackle various connecting elements and carry out secondary operations, process including removing burr, perforate, reaming tapping etc., make size between connecting elements and major-minor material coincide；Hollow ball assembles and adopts snapping to combine with gas weld reinforcement；Pipe tower tower leg adopts grafting to be connected, with gas shielded welding reinforcement, the connection that combines with pile foundation pipe collar.
Present invention have an advantage that
Existing transmission of electricity combined column is all adopted ductile cast iron material, under the premise not reducing pipe tower application performance, cost reduces, easy construction, and improves pipe tower overall corrosion resistance energy, thus improving power transmission and transformation pipe to assemble the length of service of tower, meet electric power Life cycle requirement；
Mechanical connection method, metallurgical connection method and the chemical bonding method that combines is adopted to realize connecting; mechanical connection method adopts spheroidal graphite cast-iron pipe collar and hollow ball to combine; metallurgical connection method includes gas shielded welding and heats nested combining; chemical bonding employing is inorganic to combine with organic adhesive; different tubing is selected different methods of attachment with connecting elements by the present invention targetedly; improve the reliability of connection to greatest extent; it is effectively ensured the various functional types of pipe tower, the technology requirement of various carrying solenoid combined column can have been met completely.
The present invention, by adjusting and control the parameter of various tubing and connecting elements, assembles the power transmission and transformation pipe tower meeting under various electric pressure, geographical conditions and meteorological condition.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in detail, but is not limited to this.
Embodiment 1,
A kind of ductile iron pipe application in transmission of electricity combined column, it is adaptable to 220kV electric pressure, described transmission of electricity combined column includes main material, auxiliary material and coupling member；Described main material includes main material pipe, described auxiliary material includes auxiliary material pipe, and described connecting elements includes pipe collar and hollow ball；It is characterized in that, described main material, auxiliary material and coupling member are the ductile iron pipe that dimensional structure cooperates.
The actual components of described transmission of electricity combined column is controlled size and is determined by FEM calculation: drape plot self-supporting tower is 0.3%, anchor support and terminal self-supporting tower are 0.7%.
Described transmission of electricity combined column adopts mechanical joining methods, metallurgical method of attachment and chemical connection process to combine and realizes connecting.
Described mechanical joining methods includes Flange joint, pipe collar connects and hollow ball connects.
It is nested with heating that described metallurgical method of attachment includes gas shielded welding.
Described chemical connection process is the method for attachment adopting inorganic bond and organic adhesive to combine, and its inorganic binder adopted is metal silicate binder, and its organic binder bond adopted is the one in thermosetting epoxy resin, phenolic resin and organic siliconresin.
In described transmission of electricity combined column, method of attachment between main material pipe adopts mechanical joining methods, metallurgical method of attachment and the chemical connection process method that combines to realize, and wherein, the preferred pipe collar of described mechanical joining methods connects.
In described transmission of electricity combined column; when the caliber of described main material pipe and auxiliary material pipe is less than or equal to 600mm; method of attachment between described main material pipe and auxiliary material pipe adopts the method that hollow ball connects and gas shielded welding combines to realize, and hollow ball is connect by logical the linking of two hemisphere and and provided gas shielded welding reinforcement；This embodiment 1 belongs to this kind of situation；
When the caliber of described main material pipe and auxiliary material pipe is more than 600mm, between described main material pipe and auxiliary material pipe, adopt Flange joint.
The tensile strength of described connecting elements is more than 420MPa.
The control parameter of main material and auxiliary material includes caliber, wall thickness and range of error；The caliber of described main material pipe is 150-250mm, and wall thickness is 15-20mm；The caliber of described auxiliary material pipe is 80-100mm, and wall thickness is 5-8mm.
The length of described pipe collar is 350-400mm, and the bore of pipe collar and main material pipe external diameter match, and the wall thickness of pipe collar is 20-25mm, and the flange in the bottom diameter of pipe collar is 700-900mm, and thickness is 40-45mm, and the relative error of thickness is 0.2%.
Described hollow ball diameter 400-600mm, wall thickness is 25-30mm, and its perforate matches with main material pipe and auxiliary material pipe external diameter；The relative error of thickness is 0.2%.
Embodiment 2
A kind of ductile iron pipe application in transmission of electricity combined column as described in Example 1, it is distinctive in that, it is adaptable to 500kV electric pressure,
The control parameter of main material and auxiliary material includes caliber, wall thickness and range of error；The caliber of described main material pipe is 300-400mm, and wall thickness is 20-30mm；The caliber of described auxiliary material pipe is 100-150mm, and wall thickness is 12-15mm.
The length of described pipe collar is 500-600mm, and the bore of pipe collar and main material pipe external diameter match, and the wall thickness of pipe collar is 30-50mm, and the flange in the bottom diameter of pipe collar is 800-1200mm, and thickness is 50-60mm, and the relative error of thickness is 0.3%.
Described hollow ball diameter 600-800mm, wall thickness is 30-40mm, and its perforate matches with main material pipe and auxiliary material pipe external diameter；The relative error of thickness is 0.3%.
Ductile iron pipe combined column is installed: main material pipe is sequentially connected with, by filling bonding, the other the same as in Example 1 after pipe collar grafting, nested fixing, the metal silicate of heating and phenolic resin adhesive mixing.
Comparison study example,
Unlike material is utilized to build two sizes, completely identical in structure transmission of electricity combined column, a kind of is carbon steel galvanized pipe combined column, the another kind of ductile iron pipe combined column being built into according to application process of the present invention, and table 1 is the reduced parameter table of above-mentioned 2 kinds of combined column:
The reduced parameter table of table 1 carbon steel galvanized pipe combined column and ductile iron pipe combined column
To sum up, associative list 1 is it can be seen that be applied in ductile iron pipe in transmission of electricity combined column, and its parameters is all significantly better than carbon steel galvanized pipe combined column.
Claims (10)
1. a ductile iron pipe application in transmission of electricity combined column, described transmission of electricity combined column includes main material, auxiliary material and coupling member；Described main material includes main material pipe, described auxiliary material includes auxiliary material pipe, and described connecting elements includes pipe collar and hollow ball；It is characterized in that, described main material, auxiliary material and coupling member are the ductile iron pipe that dimensional structure cooperates.
2. a kind of ductile iron pipe as claimed in claim 1 application in transmission of electricity combined column, it is characterized in that, the actual components of described transmission of electricity combined column is controlled size and is determined by FEM calculation: drape plot self-supporting tower is 0.3%, anchor support and terminal self-supporting tower are 0.7%.
3. a kind of ductile iron pipe as claimed in claim 1 application in transmission of electricity combined column, it is characterised in that described transmission of electricity combined column adopts mechanical joining methods, metallurgical method of attachment and chemical connection process to combine and realizes connecting.
4. a kind of ductile iron pipe as claimed in claim 3 application in transmission of electricity combined column, it is characterised in that described mechanical joining methods includes Flange joint, pipe collar connects and hollow ball connects；It is nested with heating that described metallurgical method of attachment includes gas shielded welding；Described chemical connection process is the method for attachment adopting inorganic bond and organic adhesive to combine, and its inorganic binder adopted is metal silicate binder, and its organic binder bond adopted is the one in thermosetting epoxy resin, phenolic resin and organic siliconresin.
5. a kind of ductile iron pipe as claimed in claim 4 application in transmission of electricity combined column, it is characterized in that, in described transmission of electricity combined column, method of attachment between main material pipe adopts mechanical joining methods, metallurgical method of attachment and the chemical connection process method that combines to realize, wherein, the preferred pipe collar of described mechanical joining methods connects.
6. a kind of ductile iron pipe as claimed in claim 4 application in transmission of electricity combined column; it is characterized in that; in described transmission of electricity combined column; when the caliber of described main material pipe and auxiliary material pipe is less than or equal to 600mm; method of attachment between described main material pipe and auxiliary material pipe adopts the method that hollow ball connects and gas shielded welding combines to realize, and hollow ball is connect by logical the linking of two hemisphere and and provided gas shielded welding reinforcement；
When the caliber of described main material pipe and auxiliary material pipe is more than 600mm, between described main material pipe and auxiliary material pipe, adopt Flange joint.
7. a kind of ductile iron pipe as claimed in claim 1 application in transmission of electricity combined column, it is characterised in that the tensile strength of described connecting elements is more than 420MPa.
8. a kind of ductile iron pipe as claimed in claim 1 application in transmission of electricity combined column, it is characterised in that the control parameter of described main material and auxiliary material includes caliber, wall thickness and range of error；The caliber of described main material pipe is 100-800mm, and wall thickness is 8-50mm；The caliber of described auxiliary material pipe is 60-300mm, and wall thickness is 6-30mm.
9. a kind of ductile iron pipe as claimed in claim 1 application in transmission of electricity combined column, it is characterized in that, the length of described pipe collar is 300-800mm, the bore of pipe collar and main material pipe external diameter match, the wall thickness of pipe collar is 10-60mm, the flange in the bottom diameter of pipe collar is 600-1500mm, and thickness is 30-100mm, and the relative error of thickness is 0.1-0.5%.
10. a kind of ductile iron pipe as claimed in claim 1 application in transmission of electricity combined column, it is characterised in that described hollow ball diameter 300-1200mm, wall thickness is 15-70mm, and its perforate matches with main material pipe and auxiliary material pipe external diameter；The relative error of thickness is 0.1-0.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610087870.6A CN105715092A (en) | 2016-02-16 | 2016-02-16 | Application of nodular cast iron pipes to combined tower for power transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610087870.6A CN105715092A (en) | 2016-02-16 | 2016-02-16 | Application of nodular cast iron pipes to combined tower for power transmission |
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| CN105715092A true CN105715092A (en) | 2016-06-29 |
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| CN201610087870.6A Pending CN105715092A (en) | 2016-02-16 | 2016-02-16 | Application of nodular cast iron pipes to combined tower for power transmission |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4899511A (en) * | 1987-03-30 | 1990-02-13 | Gustavsberg Vvs Aktiebolag | Post construction kit |
| CN201305928Y (en) * | 2008-11-27 | 2009-09-09 | 浙江省电力设计院 | Extra-large welded hollow spherical joint |
| US20090307999A1 (en) * | 2008-06-11 | 2009-12-17 | Koichi Paul Nii | Terraced structured land joint and assembly system |
| US8302368B1 (en) * | 2008-06-17 | 2012-11-06 | Mcwane Global | Interconnectable utility pole members |
| CN104179381A (en) * | 2014-08-29 | 2014-12-03 | 国家电网公司 | Steel pipe connector |
| US20150082720A1 (en) * | 2012-05-09 | 2015-03-26 | Alstom Renewable Technologies | Wind turbine foundation |
-
2016
- 2016-02-16 CN CN201610087870.6A patent/CN105715092A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4899511A (en) * | 1987-03-30 | 1990-02-13 | Gustavsberg Vvs Aktiebolag | Post construction kit |
| US20090307999A1 (en) * | 2008-06-11 | 2009-12-17 | Koichi Paul Nii | Terraced structured land joint and assembly system |
| US8302368B1 (en) * | 2008-06-17 | 2012-11-06 | Mcwane Global | Interconnectable utility pole members |
| CN201305928Y (en) * | 2008-11-27 | 2009-09-09 | 浙江省电力设计院 | Extra-large welded hollow spherical joint |
| US20150082720A1 (en) * | 2012-05-09 | 2015-03-26 | Alstom Renewable Technologies | Wind turbine foundation |
| CN104179381A (en) * | 2014-08-29 | 2014-12-03 | 国家电网公司 | Steel pipe connector |
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Application publication date: 20160629 |
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