CN201507140U - Composite material pole tower - Google Patents
Composite material pole tower Download PDFInfo
- Publication number
- CN201507140U CN201507140U CN2009202283828U CN200920228382U CN201507140U CN 201507140 U CN201507140 U CN 201507140U CN 2009202283828 U CN2009202283828 U CN 2009202283828U CN 200920228382 U CN200920228382 U CN 200920228382U CN 201507140 U CN201507140 U CN 201507140U
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- tower
- composite material
- lead
- arm
- pole tower
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Abstract
The utility model relates to a composite material pole tower, wherein a main body of the pole tower is made of composite material; main connecting parts are made of composite material or galvanized steel; a lead crossarm adopts a composite insulator; an earth wire crossarm is made of galvanized steel; a downlead crossarm is made of galvanized steel; a grounding downlead is made of wire stock or bar stock; the upper end of the grounding downlead is fixed on the earth wire crossarm, is led down from a lead or leads at one side or two sides of the pole tower and is fixed with the downlead crossarm, so that the grounding downlead can keep the fixed distance with the lead(s) and can be grounded from the downlead crossarm along the surface of the body of the tower. Compared with the prior art, for the composite material pole tower, the air clearance and the insulated creepage distance between the phase and the ground as well as between the phases of a tower head can be increased greatly, the levels for resisting pollution flashover, ice flashover, wind deviation and lightning of a line can be greatly improved; in addition, the tower head can be compressed, the composite material pole tower has the advantages that the manufacturing cost and the cost on the transportation, installation and maintenance of the body of the pole tower can be lowered, and the width of the corridor of the line can be reduced.
Description
Technical field
The utility model belongs to the transmission line of electricity field, is specifically related to a kind of composite material pole tower.
Background technology
Shaft tower is the visual plant of transmission line of electricity, the transmission line of electricity of present 110kV of China and above electric pressure adopts iron tower more, its shortcoming be perishable, quality heavy, stolen easily, and windage yaw, pollution flashover, ice sudden strain of a muscle, thunderbolt etc. take place under extreme natural environment easily, cause circuit tripping operation even generation stoppage in transit accident to occur.
Characteristics such as that composite material has is in light weight, intensity big, good insulating, anti-weathering aging, corrosion resistance are strong, composite material is applied to the insulating properties that electric power line pole tower can increase substantially circuit, significantly improving the circuit resistant dodges, ices and dodge, prevent windage yaw, lightning withstand level, also compressible simultaneously tower head size reduces the circuit width of corridor.Simultaneously, also have in light weight, corrosion-resistant, stolen the little characteristics of possibility.
External employing composite material pole tower mainly is portability and a corrosion resistance of utilizing composite material.China's transmission line of electricity build with the subject matter that faces in service with different abroad, China's transmission line of electricity has a very wide distribution, often face the geographical environment of various complexity and the influence of climatic environment, along with the construction of transmission line of electricity increases fast, make the line failure number of times be the trend that increases year by year; Because take up an area of in the corridor, expropriation of land, housing demolition expense in the line construction process are also raise year by year simultaneously.
Therefore, utilize the insulating properties of composite material, molded lines compact to design road composite material pole tower can reduce the circuit operation troubles, saves the circuit corridor and takes up an area of, and the construction and the development of China's transmission line of electricity had great importance.
Summary of the invention
The purpose of this utility model is, makes full use of the composite material insulating properties, proposes a kind of composite material pole tower, dodges to improve the circuit resistant, ice dodges, anti-windage yaw, lightning withstand level, also compressible simultaneously tower head size, minimizing circuit width of corridor.
The technical solution of the utility model is: a kind of composite material pole tower, the shaft tower main body adopts composite material, main link adopts composite material or galvanized steel, the lead cross-arm adopts composite insulator, it is characterized in that: the ground wire cross-arm adopts galvanized steel, the down lead cross-arm adopts galvanized steel, down conductor adopts hard metal tubing or bar, down conductor one end is fixed on the ground wire cross-arm, and draw following from the outside of shaft tower one side lead, be fixed on the down lead cross-arm, along the body of the tower surface earthing, down conductor adopts hard metal tubing or bar from the down lead cross-arm for the distance that down conductor and lead are maintained fixed, the remainder of down conductor, make himself to keep supporting, indeformable.
Aforesaid a kind of composite material pole tower, it is characterized in that: an end of two down conductors is fixed on the ground wire cross-arm, and draw from the outside of shaft tower both sides lead respectively down, be fixed on the down lead cross-arm, the distance that down conductor and lead are maintained fixed, the remainder of two down conductors from the down lead cross-arm along the body of the tower surface earthing
The beneficial effects of the utility model are:
(1) composite material pole tower is compared with conventional iron tower because body of the tower insulate, and tower head phase ground, alternate the air gap, insulation creep distance increase greatly, significantly improve the circuit resistant and dodge, ice sudden strain of a muscle, anti-windage yaw, lightning withstand level;
(2) because cross-arm and body of the tower insulation, make clearance distance between lead and cross-arm or the body of the tower not become the governing factor of tower head size, can further compress the distance between lead and the body of the tower, compression tower head size, save the circuit width of corridor, reduced shaft tower body cost;
(3) because two phase conductors do not have ground connector, increased mutually and alternate insulation creep distance, improve the resistant of circuit and dodged ability;
(4) down conductor adopts unsettled mode ground connection, can utilize the insulation characterisitic of the air gap, improve the dielectric strength between circuit phase ground, the minimizing creepage path of insulation mutually can be avoided the problem because of the long-time support bar decreasing insulating that the use insulating support rod causes in air simultaneously;
When (5) on this composite material pole tower, taking place to hit, be mainly the lead generation flashover that down conductor closes on it, significantly reduce the probability that the counterattack flashover takes place away from a lead of down conductor;
(6) can be according to the requirement of lightning protection level, adjusting down conductor and its close on the clearance distance between the lead one time, increase the lightning withstand level of circuit, do not increase the cost of circuit simultaneously substantially;
(7) can be according to the lightning protection needs, make the distance of one time 3 phase conductor that down conductor closes on it, increase successively from top to bottom, uneven insulation promptly is set, reduce the probability that the back flashover tripping operation takes place when identical for this loop line road 3, do not increase the cost of circuit simultaneously substantially;
(8) since composite material also have in light weight, corrosion-resistant, to be stolen possibility little, can reduce the expense of the transportation, installation, maintenance of shaft tower.
Description of drawings
Fig. 1 is the composite material pole tower schematic diagram;
Fig. 2 is a composite material pole tower important technological parameters schematic diagram.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
The explanation of mark among Fig. 1: 1-ground wire cross-arm, 2-ground wire, 3-shaft tower main body, 4-down conductor, 5-link, 6-lead, 7-lead cross-arm (composite insulator), 8-down lead cross-arm.
The explanation of mark: D among Fig. 2
1Horizontal minimum air void distance between-lead and the lead, D
2Vertical minimum air void distance between-lead and the lead, D
3Air gap distance between-lead and the ground wire, r
A-down conductor and the minimum air void distance of closing on the A phase conductor, r
B-down conductor and the minimum air void distance of closing on the B phase conductor, r
C-down conductor and the minimum air void distance of closing on the C phase conductor.
Composite material pole tower, shaft tower main body 3 adopts composite material, main link 5 adopts composite material or galvanized steel, lead cross-arm 7 adopts composite insulator, ground wire cross-arm 1 adopts galvanized steel, down lead cross-arm 8 adopts galvanized steel, down conductor 4 adopts wire rod or bar, down conductor 4 upper ends are fixed on the ground wire cross-arm 1, draw down from the outside of shaft tower one or both sides lead, and be fixed on down lead cross-arm 8, the distance that down conductor 4 and lead 6 are maintained fixed, and from down lead cross-arm 8 along the body of the tower surface earthing.
Minimum air void between down conductor 4 and its one time of closing on (3 mutually) lead is apart from r
A, r
B, r
C, can be according to the requirement of lightning protection level, the distance that down conductor 4 and lead 6 are maintained fixed according to uneven insulating requirements, makes r usually
A≤ r
B≤ r
C, down conductor adopts hard metal tubing or bar, makes himself to keep supporting, and avoids the problem because of the long-time support bar decreasing insulating that the use insulating support rod causes in air.
Embodiment: as composite material pole tower among Fig. 2, be example with the 110kV overhead line structures, according to the line span tangent tower design of 300m, the shaft tower major parameter can be got following value: D
1=D
2=3.0m, D
3=3.0m, r
A=1.2m, r
B=r
C=1.5m, the creep age distance of insulator crossarm are 3650mm.At first, each clearance distance of shaft tower satisfies the 110kV line design and requires that (minimum clearance distance is greater than 1.0m mutually, and creepage distance of insulation is not less than 3650mm, alternate level insulation distance D by the filthy area of III level
1Satisfy
Alternate vertically insulated distance D
2Satisfy
L wherein
kLong for suspension insulator, U is the circuit nominal voltage, f
cBe the maximum sag of lead), can on electric property, satisfy 110kV circuit service requirement; Secondly, compare, also have the following advantages with common 110kV iron tower:
(1) shaft tower does not have suspension insulator, and no windage yaw makes shaft tower the windage yaw fault can not take place, and the circuit width of corridor is also less than the 110kV tower line simultaneously;
(2) shaft tower phase ground creepage distance of insulation has increased the length that adds the SI semi-insulation body of the tower for the creepage distance of insulation of common 110kV; Horizontal phase insulation creep age distance is according to the phase ground creepage distance of insulation that is twice; The phase ground creep age distance that vertical phase insulation creep age distance is a twice adds the length of SI semi-insulation body of the tower.Making shaft tower get resistant sudden strain of a muscle level significantly promotes;
(3) the minimum air void distance is greater than common 110kV iron tower mutually for shaft tower, and the endurance level of circuit is better than the 110kV iron tower;
(4) each clearance distance mutually of common 110kV iron tower is all the same, the three-phase conducting wire of critical down conductor in the shaft tower of this programme (shaft tower right side among the figure), the distance of middle phase and following phase conductor and down conductor, distance greater than last phase conductor and down conductor, make when the counterattack flashover takes place circuit, be mainly phase conductor generation flashover, the probability of middle phase and following phase conductor generation lightning stroke flashover reduces greatly;
(5) the 110kV circuit is based on counterattack damage to crops caused by thunder, each clearance distance mutually of common 110kV iron tower is all the same, in the shaft tower of this programme because away from the three-phase conducting wire of down conductor (shaft tower left side among the figure), distance with down conductor, much larger than the three-phase conducting wire (shaft tower right side among the figure) of critical down conductor, make that the probability away from the three-phase conducting wire generation lightning stroke flashover of down conductor reduces greatly;
(6) because the density of composite material is about 1/4 ~ 1/3 of iron tower, make the weight of composite material pole tower be less than iron tower, reduced the transportation and the mounting cost of shaft tower;
(7) composite material has good anti-corrosion, and the possibility of being stolen is little, has reduced the maintenance cost of shaft tower.
Claims (2)
1. composite material pole tower, the shaft tower main body adopts composite material, main link adopts composite material or galvanized steel, the lead cross-arm adopts composite insulator, it is characterized in that: the ground wire cross-arm adopts galvanized steel, the down lead cross-arm adopts galvanized steel, down conductor adopts hard metal tubing or bar, and down conductor one end is fixed on the ground wire cross-arm, and draws down from the outside of shaft tower one side lead, be fixed on the down lead cross-arm, along the body of the tower surface earthing, down conductor adopts hard metal tubing or bar from the down lead cross-arm for the distance that down conductor and lead are maintained fixed, the remainder of down conductor, make himself to keep supporting, indeformable.
2. a kind of composite material pole tower as claimed in claim 1, it is characterized in that: an end of two down conductors is fixed on the ground wire cross-arm, and draw from the outside of shaft tower both sides lead respectively down, be fixed on the down lead cross-arm, the distance that down conductor and lead are maintained fixed, the remainder of two down conductors from the down lead cross-arm along the body of the tower surface earthing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202283828U CN201507140U (en) | 2009-09-25 | 2009-09-25 | Composite material pole tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202283828U CN201507140U (en) | 2009-09-25 | 2009-09-25 | Composite material pole tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201507140U true CN201507140U (en) | 2010-06-16 |
Family
ID=42468269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202283828U Expired - Lifetime CN201507140U (en) | 2009-09-25 | 2009-09-25 | Composite material pole tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201507140U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672124B (en) * | 2009-09-25 | 2011-06-15 | 国网电力科学研究院 | Compound material pole tower |
| CN104006733A (en) * | 2014-06-05 | 2014-08-27 | 国家电网公司 | Method for determining distance between down lead buried framework and bottom-phase cross arm of tower |
-
2009
- 2009-09-25 CN CN2009202283828U patent/CN201507140U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672124B (en) * | 2009-09-25 | 2011-06-15 | 国网电力科学研究院 | Compound material pole tower |
| CN104006733A (en) * | 2014-06-05 | 2014-08-27 | 国家电网公司 | Method for determining distance between down lead buried framework and bottom-phase cross arm of tower |
| CN104006733B (en) * | 2014-06-05 | 2017-01-25 | 国家电网公司 | Method for determining distance between down lead buried framework and bottom-phase cross arm of tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100616 Effective date of abandoning: 20090925 |