CN204552246U - ± 500kV common-tower double-return road straight-line angle tower - Google Patents

± 500kV common-tower double-return road straight-line angle tower Download PDF

Info

Publication number
CN204552246U
CN204552246U CN201520170185.0U CN201520170185U CN204552246U CN 204552246 U CN204552246 U CN 204552246U CN 201520170185 U CN201520170185 U CN 201520170185U CN 204552246 U CN204552246 U CN 204552246U
Authority
CN
China
Prior art keywords
arm
tower
cross
tower body
type insulator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201520170185.0U
Other languages
Chinese (zh)
Inventor
冯德奎
郭念
张轶
孙欣苗
王沛
杨景胜
吴海洋
包永忠
万志方
胡星
柯嘉
白强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Power Engineering Consultant Group Central Southern China Electric Power Design Institute Corp
Original Assignee
China Power Engineering Consultant Group Central Southern China Electric Power Design Institute Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Power Engineering Consultant Group Central Southern China Electric Power Design Institute Corp filed Critical China Power Engineering Consultant Group Central Southern China Electric Power Design Institute Corp
Priority to CN201520170185.0U priority Critical patent/CN204552246U/en
Application granted granted Critical
Publication of CN204552246U publication Critical patent/CN204552246U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to one ± 500kV common-tower double-return road straight-line angle tower, comprise the tower body of bottom belt tower leg, described tower body head is provided with the upper cross-arm of upper and lower two-layer horizontal arrangement and lower cross-arm, two ends, left and right, described upper cross-arm top are provided with earth wire support, it is characterized in that: described upper cross-arm is hung with two the upper strata L-type insulator strings in left and right, described upper cross-arm left end is provided with cranking arm of bending downwards, described lower cross-arm is also hung with left and right Liang Ge lower floor L-type insulator string, described lower cross-arm left end is provided with cranking arm of bending downwards.Meet transmission of electricity demand and reduce the investment of whole engineering, having saved cost.

Description

± 500kV common-tower double-return road straight-line angle tower
Technical field
The utility model relates to high-voltage direct-current technical field of electric power transmission, is specifically related to one ± 500kV common-tower double-return road straight-line angle tower.
Background technology
Common-tower double-return road HVDC Transmission Technology refers generally to the technology of transmission of electricity that two loop line roads are total to bar.Adopt common-tower double-return road technology of transmission of electricity can reduce the tower material index, base values, width of corridor etc. of unit transmission capacity, reduce electric energy loss during long-distance sand transport.For National energy distribution and economic development layout, adopt the common-tower double-return road DC techniques being suitable for long-distance sand transport imperative.
Common-tower double-return road transmission line of electricity is speedway and the backhaul of electric power conveying, once go wrong, consequence is extremely serious.If broken ring occurs power transmission tower, will blackout be caused, mains breakdown, cause economic loss difficult to the appraisal and serious societal consequence.Therefore the security reliability of common-tower double-return road transmission line of electricity to power transmission tower has higher requirement.Common-tower double-return road straight-line angle tower is except meeting electric specialty requirement, and also will bear vertical load and the Horizontal Tension load of lead wire and earth wire, the security reliability for circuit has key effect.
Summary of the invention
The purpose of this utility model be just to provide a kind of safe and reliable, economical rationality, good looking appearance, can carry high voltage power transmission ± 500kV common-tower double-return road straight-line angle tower.
To achieve these goals, designed by the utility model ± 500kV common-tower double-return road straight-line angle tower, comprise the tower body of bottom belt tower leg, described tower body head is provided with, the upper cross-arm of lower two-layer horizontal arrangement and lower cross-arm, two ends, left and right, described upper cross-arm top are provided with earth wire support, it is characterized in that: described upper cross-arm is hung with two the upper strata L-type insulator strings in left and right, described upper cross-arm left end is provided with cranking arm of bending downwards, described lower cross-arm is also hung with left and right Liang Ge lower floor L-type insulator string, described lower cross-arm left end is provided with cranking arm of bending downwards.
Further, the L-type insulator string distribution tower body left and right sides, described two upper stratas, wherein two hanging points of upper strata L-type insulator string in left side lay respectively at cross-arm and crank arm termination and upper cross-arm left part near tower body place, and two hanging points of the upper strata L-type insulator string on right side lay respectively on the tower body that is connected with upper cross-arm and upper cross-arm right end.The design of L-type insulator string and hang had both met the requirement of electric clearance, made again structure stress reasonable, reduced tower material and insulator quantity.
Further, described Liang Ge lower floor L-type insulator string is also distributed in the tower body left and right sides, wherein two hanging points of lower floor's L-type insulator string in left side lay respectively at lower cross-arm and crank arm termination and lower cross-arm left part near tower body place, and two hanging points of lower floor's L-type insulator string on right side lay respectively at the upper and lower cross-arm right end of tower body be connected with lower cross-arm.The design of L-type insulator string and hang had both met the requirement of electric clearance, made again structure stress reasonable, reduced tower material and insulator quantity.
Again further, the earth wire support at two ends, left and right, described upper cross-arm top is not symmetrical centered by tower body.
The utility model has the advantage of: the common-tower double-return road straight-line angle tower good looking appearance that the utility model proposes, the arrangement form of asymmetric L insulator string had both met the requirement of electric clearance, make again structure stress reasonable, reduce tower material and insulator quantity, and irregular cross-arm form of structure and special hanging point position cause the asymmetry of structure, make it have the mechanical characteristic being different from general tower.
Accompanying drawing explanation
Fig. 1 is the utility model ± 500kV common-tower double-return road straight-line angle tower structural representation.
In figure: tower body 1, tower body axis 1.1, bottleneck 1.2, tower leg 2, upper cross-arm 3, lower cross-arm 4, on crank arm 5, lower bent lever 6, earth wire support 7, ground wire hanging point 7.1, upper strata L-type insulator string 8, lower floor's L-type insulator string 9, wire 10, be positioned at the distance W1 of ground wire hanging point on the earth wire support on the left of tower body and tower body axis, be positioned at the distance W2 of ground wire hanging point on the earth wire support on the right side of tower body and tower body axis.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Shown in figure ± 500kV common-tower double-return road straight-line angle tower, comprise the tower body 1 of bottom belt tower leg 2, tower body 1 head is provided with the upper cross-arm 3 of upper and lower two-layer horizontal arrangement and lower cross-arm 4, two ends, left and right, upper cross-arm 3 top are provided with earth wire support 7, upper cross-arm 3 is hung with two the upper strata L-type insulator strings 8 in left and right, upper cross-arm 3 left end be provided with bending downwards on crank arm 5, lower cross-arm 4 is also hung with left and right Liang Ge lower floor L-type insulator string 9, lower cross-arm 4 left end is provided with the lower bent lever 6 of bending downwards.
Wherein, two upper strata L-type insulator strings 8 distribute tower body 1 both sides, two hanging points being wherein positioned at the upper strata L-type insulator string 8 on the left of tower body 1 lay respectively at crank arm 5 terminations and upper cross-arm 3 left part near tower body 1 place, and two hanging points being positioned at the upper strata L-type insulator string 8 on the right side of tower body 1 lay respectively on the tower body 1 that is connected with upper cross-arm 3 and upper cross-arm 3 right end.Liang Ge lower floor L-type insulator string 9 is also distributed in tower body 1 both sides, two hanging points being wherein positioned at the lower floor's L-type insulator string 9 on the left of tower body 1 lay respectively at lower bent lever 6 termination and lower cross-arm 4 left part near tower body 1 place, and two hanging points being positioned at the lower floor's L-type insulator string 9 on the right side of tower body 1 lay respectively at tower body 1 upper and lower cross-arm 4 right end be connected with lower cross-arm 4.
The height of each tower leg 2 can according to the design of land of ± straight-line angle tower fabricating yard, 500kV common-tower double-return road, can be identical in whole or in part, also can become phase co-altitude by Uniting.Usually become unequal leg according to the design of land of fabricating yard, the evolution in column foot face, mountain area can be reduced, do not destroy landform and vegetation, be beneficial to environmental protection.
Tower body 1 extends the top of tower leg 2, and the axis of tower body 1 is substantially vertical with horizontal plane.
Upper cross-arm 3 and lower cross-arm 4 adopt trussed construction, and the space that upper cross-arm 3, lower cross-arm 4 and tower body 1 surround meets the limit phase conductor electric clearance requirement of high voltage power transmission.Relative to single loop ± 500kV and following transmission line of electricity, the tower body 1 of common-tower double-return road high voltage power transmission tower, wire cross-arm (upper cross-arm 3, lower cross-arm 4), earth wire support 7 and tower leg 2 all want corresponding amplifying.The size design of tower body 1 will take into full account the wire cross-arm of increase, the burden that earth wire support 7 brings to tower body 1, in addition, the adverse effect that the form that the bad weathers such as strong wind, low temperature, icing can increase with load is brought to whole common-tower double-return road straight-line angle tower, tower body 1 also will fully take into account these influence factors when designing.
Earth wire support adopts trussed construction, and two, left and right earth wire support be not that symmetrical centre is symmetrical with tower body 1, is wherein positioned at the electric clearance requirement that space that earth wire support 7 on the right side of tower body 1 and tower body 1, upper cross-arm 3 surround must meet high voltage power transmission; Be positioned at the electric clearance requirement that space that earth wire support on the left of tower body 17 and tower body 1, upper cross-arm 5 surround must meet high voltage power transmission.
The utility model ± 500kV common-tower double-return road straight-line angle tower shielding angle is negative shielding angle; namely the ground wire hanging point 7.1 be arranged on the earth wire support 7 on the right side of tower body 1 is greater than the wire 10 on right side on cross-arm 3 and lower cross-arm 4 and the distance of tower body axis 1.1 with the distance W2 of tower body axis 1.1, and the ground wire hanging point 7.1 on the earth wire support 7 in left side is greater than the wire 10 of cross-arm 3 and lower cross-arm 4 upper left side and the distance of tower body axis 1.1 with the distance W1 of tower body axis 1.1.
The gradient of tower body 1 above its bottleneck 1.2 is less than the gradient of tower body below its bottleneck 1.2, angle formed by the lateral surface that the described gradient is tower body 1 and vertical direction.The voltage that common-tower double-return road straight-line angle tower transmits is higher, and its overall dimensions also can be larger, and diameter of wire is also larger.Consider that common-tower double-return road straight-line angle tower needs the load of vertical direction and the tension force of horizontal direction, tower body 1 need to design the suitable gradient make whole common-tower double-return road straight-line angle tower can resist suffered by load, and make shaft tower steel quantity consumption minimum.The gradient of tower body 1 below its bottle 1.2 is greater than the stressing conditions that its gradient above bottleneck 1.2 meets whole tower body.
Steel used by the utility model adopt the angle steel of Q420, Q345 and Q235 tri-kinds of materials.
Design described in the utility model ± 500kV common-tower double-return road straight-line angle tower, tower head size can meet the electric clearance requirement of double loop direct current high tension transmission; And by rational structure design and selection, the design is made to have enough mechanical strengths, bear the increase that the whole tower body size caused due to the layout that loop increases and the asymmetric L of insulator goes here and there becomes large brought various loads, and reduce the use amount of tower body steel.
The foregoing is only preferred embodiments of the present utility model, be not intended to limit protection domain of the present utility model.All any amendments done within spirit of the present utility model and principle, equivalent replacement, improvement etc., be all included in protection domain of the present utility model.
Other unspecified part all belongs to prior art.

Claims (4)

1. one kind ± 500kV common-tower double-return road straight-line angle tower, comprise the tower body (1) of bottom belt tower leg (2), described tower body (1) head is provided with, the upper cross-arm (3) of lower two-layer horizontal arrangement and lower cross-arm (4), two ends, described upper cross-arm (3) left and right, top are provided with earth wire support (7), it is characterized in that: described upper cross-arm (3) is hung with two upper stratas L-type insulator string (8) in left and right, described upper cross-arm (3) left end be provided with bending downwards on crank arm (5), described lower cross-arm (4) is also hung with left and right Liang Ge lower floor L-type insulator string (9), described lower cross-arm (4) left end is provided with the lower bent lever (6) of bending downwards.
2. according to claim 1 ± 500kV common-tower double-return road straight-line angle tower, it is characterized in that: described two upper stratas L-type insulator string (8) distribution tower body (1) left and right sides, wherein two hanging points on upper strata L-type insulator string (8) in left side lay respectively at crank arm (5) termination and upper cross-arm (3) left part near tower body (1) place, and two hanging points on upper strata L-type insulator string (8) on right side lay respectively at upper and upper cross-arm (3) right end of the tower body (1) be connected with upper cross-arm (3).
3. according to claim 1 ± 500kV common-tower double-return road straight-line angle tower, it is characterized in that: described Liang Ge lower floor L-type insulator string (9) is also distributed in tower body (1) left and right sides, wherein two hanging points of lower floor's L-type insulator string (9) in left side lay respectively at lower bent lever (6) termination and lower cross-arm (4) left part near tower body (1) place, and two hanging points of lower floor's L-type insulator string (9) on right side lay respectively at tower body (1) upper and lower cross-arm (4) right-hand member be connected with lower cross-arm (4).
4. according in claims 1 to 3 arbitrary described ± 500kV common-tower double-return road straight-line angle tower, it is characterized in that: the earth wire support (7) at two ends, described upper cross-arm (3) left and right, top is symmetrical centered by tower body (1).
CN201520170185.0U 2015-03-25 2015-03-25 ± 500kV common-tower double-return road straight-line angle tower Active CN204552246U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520170185.0U CN204552246U (en) 2015-03-25 2015-03-25 ± 500kV common-tower double-return road straight-line angle tower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520170185.0U CN204552246U (en) 2015-03-25 2015-03-25 ± 500kV common-tower double-return road straight-line angle tower

Publications (1)

Publication Number Publication Date
CN204552246U true CN204552246U (en) 2015-08-12

Family

ID=53827375

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520170185.0U Active CN204552246U (en) 2015-03-25 2015-03-25 ± 500kV common-tower double-return road straight-line angle tower

Country Status (1)

Country Link
CN (1) CN204552246U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106285163A (en) * 2016-08-29 2017-01-04 江西省电力设计院 A kind of triangular section electric power pylon

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106285163A (en) * 2016-08-29 2017-01-04 江西省电力设计院 A kind of triangular section electric power pylon

Similar Documents

Publication Publication Date Title
CN202866365U (en) Wineglass-type steel pipe tower for electric transmission lines
CN201486201U (en) Ultra-high voltage tension tower
CN202266069U (en) Extra high voltage direct-current single loop strain tower in the shape of Chinese character 'Gan'
CN202206066U (en) Electric power live crossing frame
CN204552246U (en) ± 500kV common-tower double-return road straight-line angle tower
CN202645101U (en) Four-circuit steel tube tower enabling double-circuit 1000 kV and double-circuit 500 kV alternating current power transmission to be conducted on same tower
CN201687253U (en) Tangent tower for transmission lines
CN202672827U (en) Two-circuit vortex inducted vibration (VIV) string drum type straight-line tower
CN204633282U (en) Steel tower changes double hanging point equipment
CN202718447U (en) Steel tower for 110kV double circuits to penetrate through
CN204326684U (en) In, heavy icing area 35kV transmission line of electricity single loop anchor support
CN102704734A (en) Double loop VIV (vortex induced vibration) string-drum-shaped tangent tower
CN205805103U (en) A kind of 220kV double-layer horizontal strain insulator bores more tower
CN206859804U (en) A kind of 750kV single loops anchor support tower head
CN203924858U (en) On a kind of UHVDC Transmission Lines around formula anchor support
CN103835567A (en) Upward-winding tension-resistant tower on extra-high-voltage direct-current transmission line
CN202945851U (en) Medium and heavy ice area 110KV electric transmission line single circuit straight-line tower
CN205645411U (en) Insulator
CN205206456U (en) Two backcrossing of tight type of excelling in is flowed with four times steel pipe towers in tower
CN204590750U (en) In, heavy icing area 35KV transmission line of electricity single loop tangent tower
CN203230217U (en) Down-shaped single loop tangent tower
CN105201264B (en) A kind of double loop door font arrangement steel tower
CN205000711U (en) Style of calligraphy horizontal arrangement strain insulator tower is done in 220kV single loop heavy ice district
CN204118663U (en) A kind of novel ground wire suspension string pattern
CN208347419U (en) A kind of novel three back transmission lines steel tower

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant