CN102347596A - Method for tensioning and stringing eight split conductors as well as installing accessories - Google Patents
Method for tensioning and stringing eight split conductors as well as installing accessories Download PDFInfo
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- CN102347596A CN102347596A CN2011102830484A CN201110283048A CN102347596A CN 102347596 A CN102347596 A CN 102347596A CN 2011102830484 A CN2011102830484 A CN 2011102830484A CN 201110283048 A CN201110283048 A CN 201110283048A CN 102347596 A CN102347596 A CN 102347596A
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Abstract
The invention discloses a method for tensioning and stringing eight split conductors as well as installing accessories, which comprises the following steps of: (1) construction preparation: calculating various parameters during a construction process and confirming required instruments; (2) tensioning construction: a, installing a temporary stay wire on a strain tower when the non-tensioning end of a construction section is the strain tower, and crimping and ascending a conductor when the non-tensioning end of the construction section is a branch circuit tower; b, initially tensioning a ground wire on the ground; and c, carrying out high-altitude tensioning on the strain tower, and carrying out sag observation simultaneously; (3) sub-conductor adjustment: leveling eight sub-conductors of each phase; (4) stringing construction: carrying out high-altitude stringing or ground stringing, stringing two sub-conductors simultaneously until the eight sub-conductors are stringed; (5) accessory installation: installing a suspension clamp on the ground wire; (6) conductor spacer installation; and (7) jumper wire installation: erecting a jumper wire of the strain tower, and completing tensioning, stringing and accessory construction. According to the invention, the existing construction instruments can be fully utilized, the equipment investment is less, the installation precision is high, the required time is short, and the construction efficiency is high.
Description
Technical field
The present invention relates to power transmission and transformation power line construction technology, relate in particular to tight hanging wire of a kind of 8 bundle conductors and annex installation method.
Background technology
According to the development plan of national extra-high voltage grid, China will make up the trunk rack of being made up of the extra-high voltage grid of 1000kV.The 1000kV extra-high voltage grid is unprecedented project to China, belongs to the advanced international standard electrical network.The stringing of 8 bundle conductors in the UHV transmission line, hanging wire, annex construction do not have the ready-made experience can be for reference, therefore need research new tight hanging wire of 8 bundle conductors and annex mount scheme.
Summary of the invention
The objective of the invention is to solve the problem that exists in the above-mentioned background technology; The work high above the ground personnel that propose a kind of needs are few, efficiency of construction is high, and can make full use of the tight hanging wire of 8 bundle conductors and the annex installation method that Work tool is few, equipment investment is few of existing construction equipment, use.
Be the realization above-mentioned purpose, tight hanging wire of 8 bundle conductors provided by the invention and annex installation method, its technical scheme may further comprise the steps:
1., preparation of construction: according to ultrahigh voltage alternating current transmission lines lead wire and earth wire specification, construction section path, iron tower quantity, span line, calculating lead wire and earth wire stringing tension force, annex are installed the line power of putting forward; Confirm tight hanging wire scheme, put forward the line scheme; Conductor spacer location and installation; Required Work tool and specification thereof in the configuration work progress;
2., Construction of Tension Stringing: a, when the non-stringing end of construction section is strain tower, temporary guy is installed on strain tower, when the non-stringing end of construction section is the forthright tower, conductor compression jointing lift-off; B, carry out the just tight lead wire and earth wire operation in ground; Carry out stringing degree of speeding observation simultaneously in high-altitude on c, the strain tower on the way;
3., sub-conductor adjustment: every phase 8 root leads are adjusted to sustained height;
4., hanging wire construction: adopt the high-altitude to carry out balance hanging wire or ground hanging wire, hang two root leads at every turn simultaneously, hung until eight root leads;
5., annex is installed: on the construction of the cross-arm on forthright tower hole, hang line lifter, the lead wire and earth wire suspension clamp is installed;
6., lead spacer is installed;
7., wire jumper is installed: set up the strain tower wire jumper, accomplish the construction of tight hanging wire and annex.
The tight hanging wire construction method of the present invention's 8 bundle conductors possesses following beneficial effect significantly:
1, adopt the first tight lead wire and earth wire on ground earlier, the independent tight hanging wire mode of carrying out stringing and hanging wire in the high-altitude of each strain section can be carried out tight hanging wire parallel operations then, effectively improves efficiency of construction; Can reduce sag and sub-conductor distance between centers of tracks error that the error that prints causes, the construction accuracy is high; In work progress, can make full use of existing construction equipment, equipment investment is few;
2, in the process of tight hanging wire, use two covers " four line line lifters " to carry line, the line mode of carrying of each cover of suspension is constructed respectively before and after the lead cross-arm; Make full use of the Work tool in the existing ultra high voltage construction; Work high above the ground is less relatively, and it is less to take Work tool, is easy to control the degree of balance of releasing pulley; And rationally utilizing cross-arm construction hole, the work high above the ground personnel that construction needs are few, efficiency of construction is high;
3, in the position fixing process of conductor spacer installation site, calculated by the technical staff, measure the location of each conductor spacer installation site successively with theodolite, avoided accumulated error, installation accuracy is high, and the needed time is few, and construction efficiency is high.
The present invention has satisfied the requirement of standardized construction fully; Can be used for instructing the standardized construction of tight hanging wire of 8 bundle conductors and annex installation; For the construction of ultra high voltage experiment and demonstration engineering safety, raising work efficiency, realization environmental objective provide technical support, also for using lead construction of the same type to have great reference value and directive significance in domestic other ultra high voltage project from now on.
Description of drawings
Fig. 1 is tight hanging wire of the present invention's 8 bundle conductors and annex installation method flow chart;
Fig. 2 is a ground of the present invention stringing arrangement sketch map;
Fig. 3 is each sub-conductor numbering sketch map of the present invention's 8 bundle conductors;
Fig. 4 is each sub-conductor arrangement architecture sketch map of the present invention's 8 bundle conductors;
Fig. 5 is that the present invention's 8 bundle conductors adopt two four line line lifters to carry the sketch map of line.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed description.
Consult tight hanging wire of 8 bundle conductors and annex installation method shown in Figure 1, may further comprise the steps:
1., preparation of construction: according to ultrahigh voltage alternating current transmission lines lead wire and earth wire specification, construction section path, iron tower quantity, span line, calculating lead wire and earth wire stringing tension force, annex are installed the line power of putting forward; Confirm tight hanging wire scheme, put forward the line scheme; Conductor spacer location and installation; Required Work tool and specification thereof in the configuration work progress;
2., Construction of Tension Stringing: a, when the non-stringing end of construction section is strain tower, temporary guy is installed on strain tower, when the non-stringing end of construction section is the forthright tower, conductor compression jointing lift-off; B, carry out the just tight lead wire and earth wire operation in ground; Carry out stringing degree of speeding observation simultaneously in high-altitude on c, the strain tower on the way;
3., sub-conductor adjustment: every phase 8 root leads are adjusted to sustained height;
4., hanging wire construction: adopt the high-altitude to carry out balance hanging wire or ground hanging wire, hang two root leads at every turn simultaneously, hung until eight root leads;
5., annex is installed: on the construction of the cross-arm on forthright tower hole, hang line lifter, the lead wire and earth wire suspension clamp is installed;
6., lead spacer is installed;
7., wire jumper is installed: set up the strain tower wire jumper, accomplish the construction of tight hanging wire and annex.
Specific embodiment
Experimental details concrete technical scheme of the present invention with tight hanging wire of 1000kV AC extra high voltage and the installation of 1000kV AC extra high voltage annex.
1, before the construction
1., prepare tight hanging wire and annex mounting and construction equipment; According to result of calculation, the lead stringing tension force 35kN/ line of mainly loading in the work progress, annex are installed and are carried line lead 48kN/ four lines of mainly loading; Existing anchor steel wire loop of tight extension and anchor line specification coefficient of safety get 3; Lead anchor steel wire loop/anchor line minimum breaking force P >=k * H=3 * 35=105kN, selecting direct φ for use is the 21.5mm steel wire loop, rupture pull force P=149kN＞105kN; Rupture pull force P=110kN＞the 105kN of anchor line, ground wire line anchor steel wire loop/anchor line minimum breaking force P >=k * H=3 * 30=90kN, directly φ is the 19mm steel wire loop; Rupture pull force P=110kN＞90kN; The anchor Lever Blocks is pressed the configuration of 60kN level, and the ground anchor is pressed the configuration of 50Kn/ line, and the lead wire and earth wire stringing all adopts three rope pulley group stringings; Coefficient of safety gets 3; Steel wire rope minimum breaking force P >=k * H/n=3 * 35 ÷ 3=35kN, coaster is the 50kN level, the stringing earth anchor all disposes by the 50kN level.
It is following that lead faces anchor: Force Calculation: P=H ÷ cos β=40 ÷ cos40 °=52.21kN (β≤40 °) coefficient of safetys get 3; Then the maximum Fracture Force P of backguy breaks=52.21 * 3=156.63kN; Use GJ-120 steel strand wire balance one phase conductor; Effective maximum Fracture Force=171.93 * 0.92=158.18kN＞156.63kN, every GJ-120 steel strand wire use a 100kN level earth anchor.
It is following that ground wire faces anchor: Force Calculation: P=H ÷ cos β=10 ÷ cos45 °=14.14kN (β≤45 °); Coefficient of safety gets 3; Then the maximum Fracture Force P of backguy breaks=14.14 * 3=42.42kN; Use ground wire of a GJ-70 steel strand wire balance, effective maximum Fracture Force=79.41 * 0.92=73.06kN＞42.42kN.Every GJ-70 steel strand wire use a 50kN level earth anchor, and the anchor Lever Blocks is pressed the configuration of 60kN level.
The wire lifting tool configuration is following: coefficient of safety gets 3, then carries the maximum rupture pull force P=H * k=48 of line steel wire loop * 3=144kN, uses the steel wire loop rupture pull force P=149kN＞144kN of direct φ as 21.5mm.Carrying the line Lever Blocks disposes by the 60kN level.Four line line lifters are the 100kN level, satisfy construction requirement.
Ground wire is proposed the Line tool configuration as follows: coefficient of safety gets 3, then carries the maximum rupture pull force P=H * k=5.7 of line steel wire loop * 3=17.1kN, and selecting direct φ for use is the steel wire rope of 13mm, rupture pull force P=55.3kN＞17.1kN.Carrying the line Lever Blocks disposes by the 15kN level.
2, Construction of Tension Stringing
At first, when the non-stringing end of construction section is strain tower, temporary guy is installed on strain tower, when the non-stringing end of construction section is the forthright tower, the conductor compression jointing lift-off.
Then, carry out the just tight lead wire and earth wire operation in ground, ground just stringing adopts two wire system that are locked to carry out, and the wire system that whenever is locked is formed (as shown in Figure 2) by a motor-driven strand mill of 30kN and three rope pulley groups and fixing-line device, coaster and steel wire loop.Each tight two root leads simultaneously, the sub-conductor stringing is preferably 3# and 6#, 2# and 7#, 4# and 5# in proper order, 1# and 8# sub-conductor.Ground just makes a maximum observation shelves lead wire and earth wire sag be tightened to 1.8 meters-2.2 meters of distance design sags during stringing.After per two root leads are tightly intact, with two 60kN Lever Blocks with this sub-conductor anchor on earth anchor, two motor-driven strands mills continue tightly all the other sub-conductors then.Carry out the high-altitude stringing on the strain tower on the way, stringing is accomplished laggard degree of running observation.
3, hanging wire construction
When carrying out the balance hanging wire, hang two root leads simultaneously, hung until eight root leads in the high-altitude;
Hanging wire is generally hung two root leads simultaneously.Hanging wire is 4# and 5#, 2# and 7# in proper order, 1# and 8#, 3# and 6#.The construction procedure that high-altitude balance hanging wire is detailed is following:
1., the insulator string lifting with the cross-arm both sides earlier puts in place, for tension force hanging wire side, the 60kN Lever Blocks is connected on the adjustment plate hangs on together, need the chain of Lever Blocks be put into the centre position simultaneously;
2., with the anchor line of the assembly pulley of tension side and lax hanging wire side by arranging.
3., tighten up assembly pulley, tension force hanging wire side visual span of sag carries out sag observation simultaneously, in the sag error less than behind ± the 0.2m; 60kN Lever Blocks anchor on lead, is tightened up Lever Blocks, ease out the strand mill then; After making Lever Blocks stressed fully, with the tight two root leads down of this assembly pulley.
4., near releasing pulley, lead is cut-off, and the strain insulator pipe of crimping slack-side.
5., the slack-side assembly pulley is arranged, hang two root leads, the hanging wire order is with the stringing side at every turn.
6., tighten up assembly pulley, make anchor line lax and remove anchor line, slowly loose assembly pulley couples together strain insulator-string and lead after can strain clamp being hung over strain insulator-string adjustment plate.Continue to ease out assembly pulley and do not stress fully, hang group sub-conductor down with this assembly pulley then up to assembly pulley.
7., tension side carries out sag fine setting observation and carries out the sub-conductor adjustment with the 60kN Lever Blocks.After all the sub-conductor adjustment finishes, lead is aimed at the hanging wire hole print.
8., the tension side lead calculates scant length and carries out the high-altitude crimping.
After all the sub-conductor crimping finishes, tighten up Lever Blocks successively, every root lead and corresponding hanging wire hole are coupled together.Ease out and remove Lever Blocks then, all the other annexes such as strain insulator-string shading ring are installed at last.
During hanging wire, for the strain insulator shaft tower of construction section terminal point, because lead anchor on the ground, must be taked the tight hanging wire in ground, taking in the construction changes anchor to lead to strain insulator-string earlier, carries out stringing and hanging wire operation by high-altitude balance hanging wire then on strain tower ground.Concrete construction procedure is following:
During strain insulator shaft tower ground anchor, make anchor line length greater than the hanging point height more than 1 times.
The hanging wire assembly pulley is deployed, and hanging wire is 4# and 5#, 2# and 7# in proper order, 1# and 8#, 3# and 6#.Slowly the hauling block group is removed anchor line after anchor line does not stress, and continues the hauling block group then; Carry out sag observation simultaneously, less than behind ± the 0.2m, lead anchor is being adjusted on the plate with 60kN Lever Blocks anchor in the sag error; Tighten up Lever Blocks; Ease out strand mill then, make Lever Blocks stressed fully after, hang two root leads down with this assembly pulley.Subsequent step is with high-altitude balance hanging wire step.
In the work progress, degree of speeding observation adopts the parallelogram method to combine to carry out with the outer preset angle configuration of shelves end/shelves, and every phase is all used on the parallelogram method tower and observed, so that the sag value is accurate. and theodolite only is used for checking and leveling under the tower.
Wherein, shelves end preset angle configuration is that instrument is placed the shaft tower center, and each observes shelves unified temperature mutually during according to observation, selects observation grade sag value, according to the view angle of observation sag value computing equipment.The computing formula of view angle does
In the formula:
θ--the shelves end instrument observation angular unit that hangs down is ° that on the occasion of the expression elevation angle, negative value is represented the angle of depression;
The h--suspension point discrepancy in elevation, instrument end suspension point are "+" when low than distant place suspension point, otherwise are "-";
The actual span of L--observation shelves, unit is m;
A--appearance mirror center to the suspension point distance of hanging down, unit is m;
F--observes sag, and unit is m.
4, third wheel faces anchor, temporary guy is installed
Carry out the sag adjustment when degree of speeding that observes does not meet the demands, in the process of adjustment, at first adjust apart from the stringing field observation shelves sag farthest; Make it a little more than the stringing sag; Pine lead roll adjustment stringing play is again observed a grade sag at a distance, makes it be slightly larger than the stringing sag, tightens up line again and makes nearer observation shelves stringing sag qualified; Method is qualified until whole sags according to this; The adjustment that same observation shelves phase sub-conductor should tighten up synchronously or loosen, i.e. degree of tightness number of times basically identical; Then by the order of adjustment sag, installing card line wood clamp successively, in case during adjustment back observation shelves sag, a string and a front observation shelves sag.
8 root lead sags are consistent, and when 8 root lead sags are inconsistent, adjust, and the method for adjustment is, is benchmark with a root lead sag, and other each sub-conductor is with the leveling that is as the criterion of this root; Leveling work at first begins from the observer away from the stringing field, adjusts to the stringing side by shelves successively, and during adjustment back observation shelves, preceding observation shelves should be kept watch on; Last by the observer's leveling eight root lead sags near the stringing field, the front observer keeps watch on the variation of the sub-conductor sag of shelves of being responsible for.
When the non-stringing end of construction section is strain tower, at the forthright tower third wheel is installed and is faced anchor, when construction section stringing end is strain tower, temporary guy is installed at strain tower, and on strain tower ground hanging wire.
On the construction of the cross-arm on forthright tower hole, hang line lifter, the lead wire and earth wire suspension clamp be installed:
Adopt two four line line lifters to carry out wire lifting, one of them line lifter is carried 1#, 2#, 3#, 4# sub-conductor, and another line lifter is carried 5#, 6#, 7#, 8# sub-conductor (consult shown in Figure 5, wherein the sub-conductor numbering is consulted shown in Figure 3).In order to make suspension clamp be installed to corresponding hanging wire point smoothly, should one of them line lifter be hung over directly over 2# and the 4# sub-conductor center line, another line lifter hangs over directly over 5# and the 7# sub-conductor center line, and each line lifter is hung on the cross-arm construction hole, handled easily.
5, lead spacer is installed, and sets up the strain tower wire jumper, accomplishes the construction of tight hanging wire and annex
It is that 13.0m steel wire loop and hanging belt are formed the insurance combination as 17.5mm, length that the forthright tower generally uses diameter of phi, every group of insurance rope sling two root leads, insurance group upper end with the shackle of 100kN level beat respectively about on the construction hole, four safety ropes assurances are relatively independent; Start Lever Blocks and promote the about 80-100mm of eight root leads, make lead unsettled, no longer be pressed on the coaster, after coaster does not stress, remove releasing pulley.The eight root leads that level exhibition is put by under the 1#, under last, the 3# of 2#, 4# is last, 5# is last, under the 6# on the 7#, the order under the 8# changes over octagon, consults shown in Figure 4; According to the given picture seal marking of stringing team; Confirm the coiling length of aluminium armor tape and draw mark according to wire clamp length, be wrapped with aluminium armor tape on request respectively, wire clamp and fastening good cable clip bolt are installed; The perpendicularity of inspection annex quality and porcelain vase string and porcelain vase pin wear to; Must satisfy standard and designing requirement, ease out Lever Blocks then, stockbridge damper is installed at last.
The ground wire suspension clamp being installed, at first being played insurance, is a diameter of phi 13mm; Length is that 1.5 meters one of steel wire loop is connected on the ground wire with the 30kN shackle; The other end is connected near the construction hole the hanging point with the 30kN shackle, carries line and carries out with the 15kN Lever Blocks, and the first diameter of phi of using is fixed on corner block near the hanging point as the steel wire loop of 13mm; Then one in steel cable cover is connected on the ground wire; The other end is connected on the 15kN Lever Blocks after through corner block, carries out annex after utilizing Lever Blocks that ground wire is mentioned to install, and the annex method is same as hanging conductor clamp.
The installation interval rod adopts the theodolite control method to carry out time span observing and controlling earlier in the process of installation, make conductor spacer perpendicular to band bobbin core then, and conductor spacer staggers aluminium hydraulic pressed connecting pipe more than 0.6 meter, with spanner installation interval rod; The strain tower wire jumper is set up in the process; Adopt aluminum pipe formula rigid jumper to set up; Aluminum pipe formula rigid jumper comprises that rigid jumper, flexible jumper pass through aluminum pipe; Aluminum pipe four becomes two wire clamps and is connected with flexible jumper with rigid jumper respectively through what its two ends were provided with, and rigid jumper is the aluminum pipe of two horizontal, long 16m, and flexible jumper is eight bundle conductors that are the octagon arrangement architecture.
Rigid jumper is partly installed and is adopted 50kN shackle+50kN to play the mode of hanging pulley+φ 13 * 200m steel wire rope+50kN shackle+30kN corner block+30kN corner block+30kN strand mill+25kN combination ground auger; Flexible jumper is partly installed
The installation of flexible jumper is adopted the good end of drainage thread crimping to be connected to aluminum pipe eight earlier and is become on the tailgate of two wire clamps, and hole, the position of adjusting is arranged on the tailgate; On the eyelet in the middle of being installed in earlier; Corresponding each sub-conductor of the other end number is close to the tailgate of strain clamp and is adjusted up and down, makes drainage thread sagging naturally, measures each electric clearance simultaneously; On each sub-drainage thread, aim at strain clamp tailgate hole respectively and draw seal, and near each sub-line marking, make the sign of crimping drainage plate direction; To put to ground from tower than measured each drainage thread, whether inspection has phenomenons such as distortion, pine thigh, presses picture seal point secant then.
Carry out crimping lift-off and third wheel at last and face the anchor operation, accomplish whole construction.Tighten up strand mill in the crimping lift-off process, let two wire heads can joint, and remove fixing-line device side anchor rope.After crimping is intact, promptly load onto the line ball coaster, breech is controlled rope, eases out to twist to be ground to fully not stress, and takes off fixing-line device, removes a remaining anchor line simultaneously, eases out the line ball coaster, lets lead wire and earth wire go up to the air.
The content that this specification is not done to describe in detail belongs to this area professional and technical personnel's known prior art.
Claims (11)
1. tight hanging wire of bundle conductor and annex installation method is characterized in that comprising following steps:
1., preparation of construction: according to ultrahigh voltage alternating current transmission lines lead wire and earth wire specification, construction section path, iron tower quantity, span line, calculating lead wire and earth wire stringing tension force, annex are installed the line power of putting forward; Confirm tight hanging wire scheme, put forward the line scheme; Conductor spacer location and installation; Required Work tool and specification thereof in the configuration work progress;
2., Construction of Tension Stringing: a, when the non-stringing end of construction section is strain tower, temporary guy is installed on strain tower, when the non-stringing end of construction section is the forthright tower, conductor compression jointing lift-off; B, carry out the just tight lead wire and earth wire operation in ground; Carry out stringing degree of speeding observation simultaneously in high-altitude on c, the strain tower on the way;
3., sub-conductor adjustment: every phase 8 root leads are adjusted to sustained height;
4., hanging wire construction: carry out the balance hanging wire in the high-altitude, hang two root leads at every turn simultaneously, hung until eight root leads;
5., annex is installed: on the construction of the cross-arm on forthright tower hole, hang line lifter, the lead wire and earth wire suspension clamp is installed;
6., lead spacer is installed;
7., wire jumper is installed: set up the strain tower wire jumper, accomplish the construction of tight hanging wire and annex.
2. tight hanging wire of 8 bundle conductors according to claim 1 and annex installation method; It is characterized in that, step 2. in, b, the concrete grammar that carries out the just tight lead wire and earth wire operation in ground are: adopt two be locked wire system simultaneously tight two root leads carry out ground stringing operation just; Whenever the wire system that is locked is made up of a motor-driven strand mill and assembly pulley and fixing-line device, coaster and steel wire loop; The sub-conductor of 8 bundle conductors is arranged side by side into 1#, 2#, 3#, 4#, 5#, 6#, 7#, 8# sub-conductor, and stringing is 3# and 6#, 2# and 7#, 4# and 5# in proper order in pairs, 1# and 8#; Ground just stringing is tightened to about 2 meters of distance design sags with maximum observation shelves lead wire and earth wire sag; After per two root leads are tightly intact, with two Lever Blocks with this sub-conductor anchor on earth anchor, then with two motor-driven strands mills continuation all the other sub-conductors tightly.
3. tight hanging wire of 8 bundle conductors according to claim 2 and annex installation method; It is characterized in that; Step 2. in; The concrete grammar of sag observation is: the method that adopts the parallelogram method to combine with the outer preset angle configuration of shelves end/shelves is carried out sag observation, under tower, adopts theodolite to check and the leveling sag.
4. tight hanging wire of 8 bundle conductors according to claim 3 and annex installation method is characterized in that, in said shelves end preset angle configuration; The sag observation instrument is placed the shaft tower center; Calculating observation shelves sag value, according to the view angle of observation sag value computing equipment, the calculating formula of view angle is following:
In
formula:
θ--the shelves end instrument observation angular unit that hangs down is ° that on the occasion of the expression elevation angle, negative value is represented the angle of depression;
The h--suspension point discrepancy in elevation, instrument end suspension point are "+" when low than distant place suspension point, otherwise are "-";
The actual span of L--observation shelves, unit is m;
A--appearance mirror center to the suspension point distance of hanging down, unit is m;
F--observes sag, and unit is m.
5. tight hanging wire of 8 bundle conductors according to claim 4 and annex installation method is characterized in that, step 3. in, the concrete steps of sub-conductor adjustment are:
A, calculate a root lead sag value after, other each sub-conductor is the benchmark leveling with this root;
B, at first begin from observer away from the stringing field, successively by shelves to the adjustment of stringing side, when each sag observer adjusted eight group lead sags of this observation shelves, the front observer kept watch on the variation of the sub-conductor sag of being responsible for grade;
C, last by the observer's leveling eight root lead sags near the stringing field accomplishes the adjustment of whole sub-conductor.
6. tight hanging wire of 8 bundle conductors according to claim 5 and annex installation method; It is characterized in that, step 4. in, high-altitude balance hanging wire adopts the mode hang two root leads simultaneously to construct; The sub-conductor hanging wire is 4# and 5#, 2# and 7# in proper order, 1# and 8#, 3# and 6# sub-conductor.
7. tight hanging wire of 8 bundle conductors according to claim 6 and annex installation method is characterized in that, step 4. in, the construction procedure of high-altitude balance hanging wire is:
A, elder generation lift the insulator string of cross-arm both sides, Lever Blocks are connected on the adjustment plate in tension force hanging wire side to hang on together, and the chain with Lever Blocks is put into tension force hanging wire centre position simultaneously;
The assembly pulley of b, suspension tension side and the anchor line of lax hanging wire side;
C, tighten up assembly pulley, carry out sag observation at tension force hanging wire side visual span of sag simultaneously, in the sag error during less than ± 0.2m; With the Lever Blocks anchor on lead and tighten up Lever Blocks; Ease out the strand mill, make Lever Blocks stressed fully, with the tight adjacent following two root leads of this assembly pulley;
D, near the lead the releasing pulley is cut-off, and the strain insulator pipe of crimping slack-side;
E, arrange the assembly pulley of slack-side, tighten up assembly pulley and remove anchor line, lax this assembly pulley and strain clamp hung over strain insulator-string adjustment plate after strain insulator-string and lead are coupled together, under this assembly pulley is hung, organize sub-conductor;
F, tension side carry out sag fine setting observation and carry out the sub-conductor adjustment with Lever Blocks, after all the sub-conductor adjustment finishes, lead is aimed at the hanging wire hole print;
The scant length of g, calculating tension side lead also carries out the high-altitude crimping; After all the sub-conductor crimping finishes, tighten up Lever Blocks successively, every root lead and corresponding hanging wire hole are coupled together; Ease out and remove Lever Blocks then;
H, installation strain insulator-string shading ring and all the other annexes.
8. tight hanging wire of 8 bundle conductors according to claim 7 and annex installation method is characterized in that, step 4. in, the concrete operations step of strain tower ground hanging wire is:
A, strain insulator shaft tower ground anchor, anchor line length should greater than 1 times of hitch point height or more than;
B, layout hanging wire assembly pulley, the sub-conductor hanging wire is 4# and 5#, 2# and 7# in proper order, 1# and 8#, 3# and 6# sub-conductor;
C, hauling block group are removed anchor line to the stressed minimum back of anchor line, continue the hauling block group; Carry out sag observation simultaneously, during less than ± 0.2m, lead anchor is being adjusted on the plate with the Lever Blocks anchor in the sag error; Tighten up Lever Blocks, ease out strand mill, make Lever Blocks stressed fully after; Hang two root leads down with this assembly pulley, carry out high-altitude balance hanging wire then.
9. tight hanging wire of 8 bundle conductors according to claim 8 and annex installation method is characterized in that, step 5. in, in the hanging conductor clamp installation process, wire lifting adopts two four line line lifters to carry out suspension clamp simultaneously and installs; In the installation process of ground wire suspension clamp, play earlier insurance when carrying line, overlap one to steel cable and be connected on the ground wire with shackle, the other end is connected near the construction hole the hanging point with shackle, carries line with Lever Blocks, carries out the annex installation after ground wire is mentioned.
10. tight hanging wire of 8 bundle conductors according to claim 9 and annex installation method is characterized in that, step 6. in, in the conductor spacer installation process, adopt earlier the theodolite control method to carry out time span observing and controlling, make conductor spacer perpendicular to sub-conductor wire harness axle core then; Conductor spacer should be apart from aluminium hydraulic pressed connecting pipe more than 0.6 meter;
11. tight hanging wire of 8 bundle conductors according to claim 10 and annex installation method is characterized in that, step 7. in the strain tower wire jumper set up in the process, ground assembling pipe is female, yoke plate and other annexes; The female side drainage tube of ground crimping flexible jumper spool, and connect in the pipe mother; The lifting pipe is female, with tightrope flexible jumper is promoted synchronously simultaneously; Mounting pipe mother is to insulator string; High-altitude crimping drainage tube and installation after the actual analogy flexible jumper length.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102830484A CN102347596A (en) | 2011-09-22 | 2011-09-22 | Method for tensioning and stringing eight split conductors as well as installing accessories |
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| CN2011102830484A CN102347596A (en) | 2011-09-22 | 2011-09-22 | Method for tensioning and stringing eight split conductors as well as installing accessories |
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| CN107248711A (en) * | 2017-04-29 | 2017-10-13 | 中国能源建设集团安徽电力建设第工程有限公司 | One kind collection electric line ground wire erection method |
| CN107845978A (en) * | 2017-12-15 | 2018-03-27 | 河南送变电建设有限公司 | A kind of tight hanging wire stringing method in extra-high voltage transmission line high-altitude |
| CN109004576A (en) * | 2018-08-09 | 2018-12-14 | 广东威恒输变电工程有限公司 | Anchor crimping construction method is faced in a kind of high-altitude suitable for the heat-resisting capacity-improving conducting wires of clearance type |
| CN111339692A (en) * | 2020-05-19 | 2020-06-26 | 北京数字绿土科技有限公司 | Laser point cloud data-based power line sag determination method and device |
| CN111478228A (en) * | 2020-04-20 | 2020-07-31 | 广东电网能源发展有限公司 | Butt joint method of multi-split large-section lead and strain insulator string |
| CN114221263A (en) * | 2021-12-01 | 2022-03-22 | 浙江省送变电工程有限公司 | Method for long-distance replacement of damaged conductor on side of strain tower among multi-split conductor shelves |
| CN114843939A (en) * | 2022-04-22 | 2022-08-02 | 广东电网能源发展有限公司 | Carbon fiber lead stringing construction method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107248711A (en) * | 2017-04-29 | 2017-10-13 | 中国能源建设集团安徽电力建设第工程有限公司 | One kind collection electric line ground wire erection method |
| CN107845978A (en) * | 2017-12-15 | 2018-03-27 | 河南送变电建设有限公司 | A kind of tight hanging wire stringing method in extra-high voltage transmission line high-altitude |
| CN109004576A (en) * | 2018-08-09 | 2018-12-14 | 广东威恒输变电工程有限公司 | Anchor crimping construction method is faced in a kind of high-altitude suitable for the heat-resisting capacity-improving conducting wires of clearance type |
| CN111478228A (en) * | 2020-04-20 | 2020-07-31 | 广东电网能源发展有限公司 | Butt joint method of multi-split large-section lead and strain insulator string |
| CN111339692A (en) * | 2020-05-19 | 2020-06-26 | 北京数字绿土科技有限公司 | Laser point cloud data-based power line sag determination method and device |
| CN114221263A (en) * | 2021-12-01 | 2022-03-22 | 浙江省送变电工程有限公司 | Method for long-distance replacement of damaged conductor on side of strain tower among multi-split conductor shelves |
| CN114221263B (en) * | 2021-12-01 | 2023-07-18 | 浙江省送变电工程有限公司 | Method for replacing Zhang Dace damaged wire resistant among multi-split wire files in long distance |
| CN114843939A (en) * | 2022-04-22 | 2022-08-02 | 广东电网能源发展有限公司 | Carbon fiber lead stringing construction method |
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Application publication date: 20120208 |