CN101958519B - Method for transforming tangent tower of double-circuit double-bundle transmission lines by lifting in electrified mode in another place - Google Patents
Method for transforming tangent tower of double-circuit double-bundle transmission lines by lifting in electrified mode in another place Download PDFInfo
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Abstract
The invention discloses a method for transforming a tangent tower of double-circuit double-bundle transmission lines by lifting in an electrified mode in another place, which belongs to the field of equipment installation. In the method, the current old tower and a common-tower double-circuit transmission lines thereon are involved. The method adopts a construction process of assembling a new tower in the electrified mode at a new tower position by using a landed derrick mast, transferring earth wires from the old tower to the new tower in the electrified state, and dismantling the old tower in the electrified mode in the longitudinal space between the common-tower double-circuit transmission lines, avoids the phenomenon that the two common-tower double-circuit lines have power failure at the same time, improves the safety and the reliability of a power grid, overcomes the difficulty of an insufficient safe distance between a craning rope and electrified wires, and solves the problems that an cross arm member is overlarge, has the insufficient safe distance to the electrified wires, and is difficultly controlled by installation personnel. By slitting a tower body section member into 4 parts according to main materials and craning the 4 parts separately, the craning load of the derrick mast is lowered, and working safety is improved. The method can be widely applied to the fields of the displacement or transformation of the conventional overhead power transmission lines or iron towers.
Description
Technical field
The invention belongs to the installing area of cable or electric wire, relate in particular to a kind of charged displacement installation method in strange land that is used for overhead transmission line/iron tower.
Background technology
For to security needs; between high pressure overhead power line and on every side the building or facility; need the certain safe distance of maintenance; according to " protection of electric power facility regulations " and detailed rules for the implementation regulation thereof; except that 500kV and above circuit must not be crossed over the long-term people's of living building; when 220kV and following special circumstances need be crossed over the house, under safing situation, can cross over.
Minimum perpendicular distance according to regulation 220kV transmission line wire and building in " 110-750kV overhead transmission line designing technique standard " is 6 meters, and the minimum perpendicular distance of 110kV transmission line wire and building is 5 meters; The minimum range of 220kV power transmission line roadside lead and building is 5 meters, and the minimum range of 110kV power transmission line roadside lead and building is 4 meters; The horizontal range of 220kV power transmission line roadside lead and building is 2.5 meters, and the horizontal range of 110kV power transmission line roadside lead and building is 2 meters.
Afore mentioned rules is meant that overhead transmission line is in design or safe distance requirement that must maintenance between to circuit and surrounding buildings thing or facility when laying, but, in the practical work, it is more frequent that what run into is that the safe distance conflict takes place between yet to be built/newly-built building and the transmission line that has set up, and the problem that the transmission line that need set up is given way/relocated.
In recent years, fast development along with urban construction, a large amount of municipal infrastructure (such as newly-built viaduct, track traffic on the ground circuit, stride Jiang Daqiao or highway etc.) need pass through from the extra high voltage network below of the existing country electrical network built up, cause the lead of existing transmission line and the regulation that is not met relevant electric power laws and regulations by the safe distance between the leap thing.
Therefore, the power circuit department circuit/shaft tower that need build up, be in the charging operation state every year to these transformation that is shifted.
According to traditional line construction service technique, must at first apply for the power failure of existing line, new tower is set up in the strange land then, transmission line is installed and the site operation of the old tower in dismounting former address, the work on the spot amount is big, interruption duration is long, directly has influence on system safety operation and effective transmission of electricity time of country electrical network.
The day for announcing is on August 11st, 2004, notification number is the Chinese invention patent of CN 1161869C, a kind of " utilize the method for overhead transmission line unwrapping wire and implement the device of this method " disclosed, it is utilizing existing original overhead transmission line on the existing shaft tower, the draw-gear that will have power is placed on original overhead transmission line, the control Digiplex, make the direct Dragging Line of draw-gear, cable or the self brought line, the cable that are built-in with corresponding remote control actuator roll along overhead transmission line and travel, finish the required exercises of unwrapping wire, realize the unwrapping wire operation.But it is applicable to and lays new circuit on original shaft tower, and needs existing line to have a power failure just to carry out, not be suitable for the strange land displacement improvement project that is in circuit/shaft tower under the charging operation state.
So, in the actual engineering construction process of reality, press for a kind of corresponding construction technical schemes/method, its guarantee workmen and iron tower member Work tool etc. the charging operation transmission pressure is kept corresponding enough safe distances under the prerequisite, can in existing limited live wire pitch space, organize Li Xinta, shift job executions such as lead, the old tower of dismounting, for new field is started in live line working, improve the availability factor of mains supply reliability and transmission line.
Summary of the invention
Technical problem to be solved by this invention provides the two charged strange land rising of the division electricity transmission line tangent tower remodeling methods in a kind of double loop, the construction technology that it adopts " utilization land gin pole in new tower bit strip electricity group Li Xinta, charged process lead wire and earth wire is being transferred to new tower, the old tower of charged dismounting by old tower ", avoided 2 circuits in common-tower double-return road to have a power failure simultaneously, solve grid power blackout and carried out the difficult problem that the iron tower displacement raises and transforms, improved the reliability of mains supply and the availability factor of transmission line.
Technical scheme of the present invention is: provide a kind of double loop the two charged strange land rising of division electricity transmission line tangent tower remodeling methods, comprise existing Jiu Ta and the common-tower double-return road transmission line of fixing on it, described dual loop transmission line comprises the one-sided/single loop three phase line that is positioned at existing Jiu Ta both sides and is positioned at the ground wire of one-sided/single loop transmission line top, it is characterized in that:
Described remodeling method comprises following construction procedure at least:
In A, the longitudinal space between the transmission line of described common-tower double-return road, utilize and to land gin pole and high strength insulation lifting rope, charged by root erection tower material, the charged upright new Tata body that looses in strange land is by the charged lifting ground line bracket of insulation lifting rope burst and fix;
B, you can well imagine raise-position in the existing ground wire of its both sides in new tower punishment, till extremely old tower place ground wire suspension gold utensil/annex does not stress, remove the suspension gold utensil/annex of old tower ground wire, new tower continues to promote ground wire to the installation site, and finishes corresponding suspension gold utensil/annex installation of ground wire;
Cross-arm is gone up in C, tower burst lifting newly, after last cross-arm is in place, is lifted at phase conductor on the having now of its both sides respectively at Xin Tachu, till extremely phase conductor suspension gold utensil/annex does not stress in the old tower place, removes the suspension gold utensil/annex of phase conductor on the old tower;
D, one second gin pole is installed at old tower, burst loose the ground line bracket of tearing old tower open and go up cross-arm after, new tower continues to promote goes up phase conductor to the installation site, finishes corresponding suspension gold utensil/annex installation of phase conductor;
E, repetition C, G step operating procedure, distinguish in the order lifting successively, descend phase conductor to the installation site, the attachment/detachment work of finishing new/Jiu Tazhong, following phase cross-arm successively and hanging gold utensil/annex, so far new tower is all organized upright finishing, corresponding suspension gold utensil/annex installs, the only surplus body of the tower part of old tower;
F, by the method backward construction of the upright new Tata body of group, loose by root and to tear old tower angle steel open;
G, by adopting the method for " in the longitudinal space between the alive circuit of common-tower double-return road; the charged upright new Tata body that looses in strange land; charged old tower ground wire/lead is transferred to new tower; erect a gin pole and come the old tower of charged dismounting in that old body of the tower is inboard ", finish the strange land rising rebuilding construction of the two division electricity transmission line tangent towers in 220kv double loop, avoid 2 circuits on common-tower double-return road to have a power failure simultaneously, improved the power grid security reliability.
Further, described charged loose upright new Tata body and ground line bracket lifting are landed the method for the upright tower of soaring gin pole by setting and are realized.Wherein, to being no more than the new body of the tower of existing transmission line wire height part, employing sets backguy form burst and carries out the erection tower material, to the new body of the tower near existing transmission line wire part, do not adopt to set span wire system, but by setting girdle ring and body of the tower master material is connected and fixed.
Adopt high strength insulation rope as tower material lifting rope in the whole construction course, adopt by the upright new Tata body of group in the longitudinal space of mode between the two-way live wire of root erection tower material, tower material member is from the body of the tower lifting along the line side, and its swing of rope control of passing through to insulate.After the tower material winches to the installation site, by staff's construction bolt of on tower, wearing screening clothing, installation at high altitude tower material.Constantly raise along with the body of the tower group is upright, the soaring gin pole that lands falls to assemble by hoisting frame, and the rising gin pole is to the height that needs.
Further, in the installation process of described ground line bracket, by ground line bracket and cross-arm being divided into two of vertical ground, alleviate construction weight, line bracket horizontal line road, ground is divided into two, along line direction lifting, installation in position, after the angle steel connection between two plate racks, remove lifting rope along body of the tower.
Further, in the installation process of described cross-arm, utilizing top cross-arm and cross-arm installation in position rope is burst lifting cross-arm, by tackling system with the cross-arm sheet along vertically rise along the line side body of the tower winch to horizontal plane in place after, slowly unclamp auxiliary lifting rope and under manpower cooperates, make the cross-arm sheet steadily go to level, system releases body of the tower with cross-arm sheet level by the horizontally tracting rope, avoid rotating by the horizontal rope control tower sheet of insulation control simultaneously, installation personnel with its installation in position after, after treating that two cross-arms install, angle cleat is installed again.
Further, the order of ground wire, upper, middle and lower phase is pressed in the lifting of described lead, installs and promotes a phase conductor behind the phase cross-arm, the safe distance when installing to increase next phase cross-arm; It is specifically undertaken by following step:
A, after new tower utilization insulation rope promotes ground wire to old tower ground wire straight line gold utensil in the mode of insulating block group and does not stress, remove old tower ground wire annex, continue to promote ground wire to the installation site at Xin Tachu, installation accessories;
Cross-arm in b, the new charged lifting of tower, the lifting work of last phase conductor; New tower on cross-arm two secondary insulating block groups are installed, after phase conductor cross-arm straight line annex to the old tower does not stress in the charged lifting, anchoring lifting rope, the height of retainer belt electric lead;
Existing equal potential working method is adopted in c, old tower position, removes cross-arm annex on the old tower; Utilize second gin pole and insulation lifting rope then, loose and tear cross-arm on old tower ground line bracket and the old tower open;
D, treat on the old tower that cross-arm is removed after, cross-arm continues to promote and goes up phase conductor to the installation site on the new tower, adopts the equal potential working method that new tower annex is installed;
E, finish according to the above-mentioned sequence of operation in, the phase live wire is transferred to the operation of new tower cross-arm by old tower down;
F, annex are installed and the equal potential working mode is adopted in dismounting work, the equal potential working hand is climbed to lead in place by insulated flexible ladder, lift two pairs and put forward line insulating block group, waiting to put forward the line step finishes, after the equal potential working hand is installed preformed armor rods, suspension clamp, stockbridge damper, cooperate with cross-arm head operation hand, synthetic insulator is installed.
Further, the charged dismounting of described old tower cross-arm and body of the tower are removed, and are specifically undertaken by following method:
A ') dismounting of line bracket, second gin pole of 160 * a 250 * 16m is set, expose 6 meters of old column overhead, do not set printed line, by steel wire rope and the body of the tower master material binding of giving support to somebody, identical with the diffusing cross-arm method of tearing open, after lifting rope and the binding of ground wire bracket end, with diffusing the tearing open of ground line bracket is 2, and the horizontal rope that insulate is controlled well and winched to along being lowered into ground behind the line side body of the tower middle part;
B ') the charged dismounting order of old tower cross-arm is undertaken by the order of upper, middle and lower phase, its method for dismounting is identical with new tower crane dress cross-arm, by second gin pole of aforementioned 160 * 250 * 14m insulation lifting rope is installed, cross-arm loose to tear open be two and set the horizontal rope of twice insulation control, cross-arm sheet level is pushed into along behind the line side body of the tower middle part under the manpower holder is held up, it is bundled on the body of the tower, under cooperating, lifting rope manually breaks the cross-arm sheet, angle steel is transferred in the body of the tower hangs down, by another sheet cross-arm being removed with quadrat method;
Identical when c ') old Tata body is removed with Xin Talita, by the diffusing body of the tower of tearing open of main material,, the tower material is transferred to along being lowered into ground behind the circuit body of the tower middle part by the horizontal rope control tower material swing of insulating.
Further, described high strength insulation rope in the whole construction operation process, uses high strength insulation rope as lifting rope for the high strength insulation rope of Φ 12, uses the insulation rope to make horizontal rope control tower material; Utilize earth connection will land gin pole simultaneously and link to each other, realize taking off rod grounded, hoist engine ground connection with iron tower ground connection.
Further, carry out in the process " circuit reclosing " relaying protection of the place alive circuit of stopping using in described construction procedure.
Compared with the prior art, advantage of the present invention is:
1. adopt the construction technology of " utilization land gin pole in new tower bit strip electricity group Li Xinta, charged process, lead wire and earth wire is being transferred to new tower, the old tower of charged dismounting by old tower ", have a power failure when having avoided 2 circuits in common-tower double-return road, improved the power grid security reliability;
2. the steel wire rope that uses high strength insulation ropes replacement use has in the past solved the difficult point of lifting rope to live wire safe distance deficiency as lifting rope;
3. the method for " the cross-arm integrated member is divided into 2 of vertical ground to be lifted or remove " is adopted in cross-arm lifting and removing, and it is excessive to live wire safe distance deficiency well to have solved the cross-arm member, the unmanageable problem of installation personnel;
4. the attachment/detachment of body of the tower disperses lifting by body of the tower section member is decomposed into 4 parts by main material (leading role's steel at four angles of member) with it, has solved the difficult problem of member to live wire safe distance deficiency, has reduced the lifting load of gin pole, has improved fail safe.
Description of drawings
Fig. 1 is a construction procedure schematic diagram of the present invention;
Fig. 2 a is the schematic diagram of charged group of upright new Tata body of the present invention;
Fig. 2 b is new Tata body and land the schematic diagram of gin pole
Fig. 3 a is the schematic diagram of the charged lifting cross-arm of new tower;
The schematic diagram of master's lifting rope and auxiliary lifting rope position relation when Fig. 3 b is the lifting cross-arm;
Fig. 4 a is the charged schematic diagram that lead wire and earth wire is transferred to new tower;
Fig. 4 b is that new tower promotes and goes up the do not stress schematic diagram of state of phase conductor to old tower annex;
Fig. 4 c is the charged dismounting annex of old tower and upward promotes the schematic diagram of going up phase conductor behind the cross-arm;
Fig. 5 is the schematic diagram of the old tower of charged dismounting.
1 is new Tata body among the figure, and 2 is live wire, and 2-1 is last phase conductor, 2-2 is middle phase conductor, and 2-3 is following phase conductor, and 3 is ground wire, 4 for landing soaring pole, and 5 is double hook, and 1-1 or 6 is a tower material member, 7-1,7-1-1 are tower material lifting rope, and 7-2,7-1-2 are the horizontal rope of control, and 8 is cross-arm installation in position rope system, 9 for removing second gin pole that old tower is used, and 10 is the ground wire cross-arm, and 11 is ground/lead straight line gold utensil/annex, 12 is last cross-arm, and 13 is last phase line straight line gold utensil/annex.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
Among Fig. 1, technical scheme of the present invention provides a kind of double loop the two charged strange land rising of division electricity transmission line tangent tower remodeling methods, comprise existing Jiu Ta and the common-tower double-return road transmission line of fixing on it, its dual loop transmission line comprises each the one group of one-sided/single loop three phase line that is positioned at existing Jiu Ta both sides and is positioned at the ground wire of one-sided/single loop transmission line top.
Note, " common-tower double-return road transmission line " described in the technical program, wherein have at least a loop (be positioned in other words conj.or perhaps a certain side of iron tower) transmission line to be in the charging operation state, this point is the prerequisite that the technical program is implemented, so after de-emphasize or repeated description.
Described remodeling method comprises following construction procedure at least:
In A, the longitudinal space between the transmission line of described common-tower double-return road, utilize and to land gin pole and high strength insulation lifting rope, charged by root erection tower material, the charged upright new Tata body that looses in strange land is by the charged lifting ground line bracket of insulation lifting rope burst and fix;
B, you can well imagine raise-position in the existing ground wire of its both sides in new tower punishment, till extremely old tower place ground wire suspension gold utensil/annex does not stress, remove the suspension gold utensil/annex of old tower ground wire, new tower continues to promote ground wire to the installation site, and finishes corresponding suspension gold utensil/annex installation of ground wire;
Cross-arm is gone up in C, tower burst lifting newly, after last cross-arm is in place, is lifted at phase conductor on the having now of its both sides respectively at Xin Tachu, till extremely phase conductor suspension gold utensil/annex does not stress in the old tower place, removes the suspension gold utensil/annex of phase conductor on the old tower;
D, one second gin pole is installed at old tower, burst loose the ground line bracket of tearing old tower open and go up cross-arm after, new tower continues to promote goes up phase conductor to the installation site, finishes corresponding suspension gold utensil/annex installation of phase conductor;
E, repetition C, G step operating procedure, distinguish in the order lifting successively, descend phase conductor to the installation site, the attachment/detachment work of finishing new/Jiu Tazhong, following phase cross-arm successively and hanging gold utensil/annex, so far new tower is all organized upright finishing, corresponding suspension gold utensil/annex installs, the only surplus body of the tower part of old tower;
F, by the method backward construction of the upright new Tata body of group, loose by root and to tear old tower angle steel open;
G, by adopting the method for " in the longitudinal space between the alive circuit of common-tower double-return road; the charged upright new Tata body that looses in strange land; charged old tower ground wire/lead is transferred to new tower; erect a gin pole and come the old tower of charged dismounting in that old body of the tower is inboard ", finish the strange land rising rebuilding construction of the two division electricity transmission line tangent towers in 220kv double loop, avoid 2 circuits on common-tower double-return road to have a power failure simultaneously, improved the power grid security reliability.
Among Fig. 2 a, the technical program adopts lands soaring gin pole 4, charged by root erection tower material in the longitudinal space that comprises between the common-tower double-return road alive circuit of live wire 2 and ground wire 3, the charged upright/new Tata body 1 of assembling that looses in strange land.
Among Fig. 2 b, the gin pole 4 that lands is positioned at the centre of new Tata body 1, and the double hook 5 that is provided with X-shaped between itself and the new Tata body is fixing, according to the practice of construction needs, adopts the double hook of 5t to meet the demands.
Charged group of upright new Tata body, because the space in the longitudinal space between the alive circuit of common-tower double-return road on " horizontal line road " direction is limited, the pole backguy can't set, and at present new tower tower material is heavier, be to guarantee lifting safety and stable, found tower so select to land soaring gin pole.
For the body of the tower that is no more than conductor part, adopt to set backguy form burst erection tower material.
For body of the tower, adopt and not set span wire system, by setting girdle ring and body of the tower master material is connected and fixed near conductor part.
In whole construction course, select for use high strength insulation rope as tower material lifting rope.
Because the space between the live wire is limited, install for guaranteeing that the tower material meets the demands to the live wire safe distance and is convenient to control in the upright tower process, abandon original conventional sheet and hang mode, adopt by root erection tower material mode, in the longitudinal space between the transmission line of common-tower double-return road, the upright new Tata body of group.
Simultaneously, making up for fear of the tower material may be to live wire safe distance deficiency in the lifting process, and tower material member is by the body of the tower lifting of suitable line side, and the rope that passes through to insulate is controlled its swing.The tower material winches to the installation site and wear screening clothing staff construction bolt on tower, installation at high altitude tower material.
Constantly raise along with the body of the tower group is upright, gin pole is assembled the rising gin pole to the height that needs by special-purpose hoisting frame.
" along circuit " and " the horizontal line road " mentioned in the narration of front, be the usage of trade term of this area, wherein, trend with overhead transmission line is a benchmark, identical with it or parallel, ground is referred to as " along circuit " before and after then being regardless of, the trend with circuit of anticipating promptly, " direction " is identical in other words, so be referred to as " along circuit "; Otherwise, with the perpendicular angle of moving towards of overhead transmission line, being referred to as about then being regardless of on " horizontal line road ", meaning is perpendicular with " trend " of circuit promptly, so be referred to as " horizontal line road ".
Among Fig. 3 a, adopt high strength insulation rope as tower material lifting rope 7-1 and the horizontal rope 7-2 of control, adopt by the mode of root erection tower material 6 and (representing with the open circles of top two vertical setting of types among the figure with tower two-way alive circuit, wherein lead 2-1 is last phase conductor) between longitudinal space in the upright new Tata body of group, tower material member 6 (representing with cross-arm among the figure) lifts by crane from the body of the tower along the line side, and controls its swing by controlling horizontal rope; After tower material member winches to the installation site, by staff's construction bolt of on tower, wearing screening clothing, installation at high altitude tower material; Constantly raise along with the body of the tower group is upright, gin pole is assembled the rising gin pole to the height that needs by special-purpose hoisting frame.
In the installation process of cross-arm 6, utilizing top cross-arm and cross-arm installation in position rope is the liftings of 8 bursts, by tackling system (adopting hoist engine-fixed pulley group-lifting rope group usually) with the cross-arm sheet along vertically rise along the line side body of the tower winch to horizontal plane in place after, slowly unclamp auxiliary lifting rope and under manpower cooperates, make the cross-arm sheet steadily go to level, system releases body of the tower with cross-arm sheet level by the horizontally tracting rope, avoid rotating by the horizontal rope control tower sheet of insulation control simultaneously, installation personnel with its installation in position after, after treating that two cross-arms install, angle cleat is installed again.
Among Fig. 3 b, tower material member (representing with cross-arm 1-1 among the figure) adopts the main lifting rope 7-1-1 of high strength insulation rope as the lifting of tower material, is aided with auxiliary lifting rope 7-1-2 simultaneously, with skyborne attitude of control tower material member/cross-arm and run location better.
In conjunction with Fig. 3 a and Fig. 3 b as can be known, because of charged installation ground line bracket and cross-arm, for guaranteeing safe distance in the lifting installation process, member must be convenient to control, in place, therefore ground line bracket and cross-arm are divided into two of vertical ground, alleviate construction weight, be convenient to installation personnel control and installation in position on the tower like this, also can control it preferably charged safe distance.
Simultaneously, Yin Xinta is higher slightly and lead than old tower/and there are reasons such as sag in ground wire, the ground line bracket of new tower is higher than original ground line position, promptly above original ground wire, therefore the line bracket horizontal line road, ground of new tower can be divided into 2, along circuit lifting installation in position, will remove lifting rope after the angle steel connection between two plate racks along new Tata body.
Among Fig. 4 a, cross-arm must install a phase cross-arm by the upper, middle and lower phase sequence to the safe distance of lead when new tower cross-arm guarantee to be installed, and promotes a phase conductor, the safe distance when installing to increase next phase cross-arm of new tower.
Removing old tower lead annex carries line process with Xin Ta and matches.
(be positioned at the left side among the figure at Xin Ta, ground wire cross-arm 10 down together) utilizes insulating block group lifting ground wire 3 to old tower (to be arranged in the figure right side, ground wire straight line gold utensil down together) does not stress, remove old tower ground wire annex then, new again tower place continues to promote ground wire to the Xin Ta installation site, and ground wire straight line gold utensil/annex 11 is installed.
Among Fig. 4 b, after cross-arm 12 finishes in the new charged lifting of tower, the line/lifting work of carrying of last phase conductor.
Cross-arm 12 on new tower is installed 2 secondary insulating block groups, phase conductor 2-1 after the straight line gold utensil 13 of cross-arm does not stress to the old tower in the charged lifting, anchoring/fixed hoisting rope (not shown), phase conductor height in the maintenance.
Among Fig. 4 c, adopt existing ripe equal potential working method, remove cross-arm annex on the old tower in old tower position; Utilize second gin pole and insulation lifting rope (all not shown among the figure) to loose then and tear cross-arm on old tower ground line bracket and the old tower open.
After treating on the old tower that cross-arm is removed, in the time of can solving new tower elevator belt electric lead to the situation of old tower cross-arm safe distance deficiency.
The cross-arm continuation promotes and goes up phase conductor to the installation site on the new tower, adopts the equal potential working method that the last phase straight line gold utensil of new tower is installed.
So far, last phase annex installs.
By the above-mentioned sequence of operation, in finishing equally, the phase live wire is transferred to the operation of new tower cross-arm by old tower down.
The equal potential working mode that adopts is installed and removed to annex, the equal potential working hand is climbed to lead in place by insulated flexible ladder, lift 2 pairs and put forward line insulating block group, after carrying line, after the equal potential working hand prints preformed armor rods, suspension clamp, stockbridge damper is installed, cooperate with cross-arm head operation hand, synthetic insulator is installed.
Among Fig. 5, provided the process of the old tower of charged dismounting, two vertical setting of types open circles with top among the figure are represented alive circuit.
A ') dismounting of line bracket, second gin pole 9 of 160 * a 250 * 16m is set, expose 6 meters of old column overhead, do not set printed line, by steel wire rope and the body of the tower master material binding of giving support to somebody, identical with the diffusing cross-arm method of tearing open, after lifting rope and the binding of ground wire bracket end, with diffusing the tearing open of ground line bracket is 2, and the horizontal rope that insulate is controlled well and winched to along being lowered into ground behind the line side body of the tower middle part;
B ') the charged dismounting order of old tower cross-arm is undertaken by the order of upper, middle and lower phase, its method for dismounting is identical with new tower crane dress cross-arm, insulation lifting rope is installed also by the gin pole of aforementioned 160 * 250 * 14m, cross-arm loose to tear open be two and set the horizontal rope of twice insulation control, cross-arm sheet level is pushed into along behind the line side body of the tower middle part under the manpower holder is held up, it is bundled on the body of the tower, under cooperating, lifting rope manually breaks the cross-arm sheet, angle steel is transferred in the body of the tower hangs down, by another sheet cross-arm being removed with quadrat method;
Identical when c ') old Tata body is removed with Xin Talita, by the diffusing body of the tower of tearing open of main material,, the tower material is transferred to along being lowered into ground behind the circuit body of the tower middle part by the horizontal rope control tower material swing of insulating.
Except that above-mentioned construction technology, the technical program is still needed and is implemented following work when implementing:
One, the anti-induced electrical measure in the construction:
1) uses Φ 12 high strength insulation rope as lifting rope, use the insulation rope to make horizontal rope control tower material.
2) utilize earth connection will land gin pole and link to each other with iron tower ground connection, make take off rod grounded, hoist engine ground connection.The operating personnel should wear a whole set of qualified 220kV screening clothing as personnel protection on the tower, prevents the induced electricity injury that may cause.
Two, this project should be carried out under good weather; Must not carry out this work as thunder, rain, snow, mist, relative air humidity greater than 80%, wind-force should not carry out this work during greater than 5 grades.
Three, if meeting weather changes suddenly, in the time of might jeopardizing the person or device security, should quit work immediately in the live line working process, set up interim safety measure as early as possible.
Four, carry out in the process in described construction procedure, " circuit reclosing " relaying protection of the place alive circuit of must stopping using just in case electric shock tripping operation back supply line automatic reclosing takes place, increases the weight of the extent of injury of accident to prevent.
Five, in the charged displacement construction the electric flashover of equipment and operating personnel's electric shock accidents not taking place for guaranteeing, must carry out following technical safety measures:
1) all might touch or Work tools such as the contiguous rope that electric position arranged, backguy must adopt insulating material to make, and its insulation property should meet the requirement of relevant rules and standard.
2) safe distance that must keep reach effective insulated lengths (unit: rice):
The person and electrified body safe distance 1.8
The minimum effectively insulated lengths 1.8 of insulating tool
The minimum effectively insulated lengths 2.1 of insulating bar
The equal potential working personnel are to the minimum range 2.5 of adjacent phase conductor
Combinational gap minimum range 2.1
The minimum range 0.4 of human body exposed part and electrified body when shifting current potential
3) for guaranteeing various load frameworks, hitching machinery and enough bearing strengths of lifting Work tool and good user mode in the charged displacement iron tower construction.
The technical program is utilized the construction technology of " landing gin pole at new tower bit strip electricity group Li Xinta; in the charged process lead wire and earth wire is transferred to new tower by old tower; the old tower of charged dismounting ", has a power failure when having avoided 2 circuits in common-tower double-return road, has improved the power grid security reliability; Simultaneously, its steel wire rope that uses high strength insulation ropes replacement use has in the past solved the difficult point of lifting rope to live wire safe distance deficiency as lifting rope; In addition, cross-arm lifting and removing is adopted and the cross-arm integrated member is divided into 2 of vertical ground is lifted or remove, and it is excessive to live wire safe distance deficiency well to have solved the cross-arm member, the unmanageable problem of installation personnel; At last, the attachment/detachment of body of the tower disperses lifting by body of the tower section member is decomposed into 4 parts by main material (leading role's steel at four angles of member) with it, solved the difficult problem of member, reduced the lifting load of gin pole, improved fail safe live wire safe distance deficiency.
The present invention can be widely used in the displacement/improvement project field of existing overhead transmission line/iron tower.
Claims (6)
1. the two charged strange land rising of division electricity transmission line tangent tower remodeling methods in a double loop, comprise existing Jiu Ta and the common-tower double-return road transmission line of fixing on it, described dual loop transmission line comprises the one-sided/single loop three phase line that is positioned at existing Jiu Ta both sides and is positioned at the ground wire of one-sided/single loop transmission line top, it is characterized in that:
Described remodeling method comprises following construction procedure at least:
In A, the longitudinal space between the transmission line of described common-tower double-return road, utilize and to land soaring gin pole and high strength insulation lifting rope, charged by root erection tower material, the charged upright new Tata body that looses in strange land is by the charged lifting ground line bracket of insulation lifting rope burst and fix;
B, you can well imagine raise-position in the existing ground wire of its both sides in new tower punishment, till extremely old tower place ground wire suspension gold utensil/annex does not stress, remove the suspension gold utensil/annex of old tower ground wire, new tower continues to promote ground wire to the installation site, and finishes corresponding suspension gold utensil/annex installation of ground wire;
The phase cross-arm is gone up in C, tower burst lifting newly, after last phase cross-arm is in place, is lifted at phase conductor on the having now of its both sides respectively at Xin Tachu, till extremely phase conductor suspension gold utensil/annex does not stress in the old tower place, removes the suspension gold utensil/annex of phase conductor on the old tower;
D, one second gin pole is installed at old tower, burst loose the ground line bracket of tearing old tower open and go up the phase cross-arm after, new tower continues to promote goes up phase conductor to the installation site, finishes corresponding suspension gold utensil/annex installation of phase conductor;
E, repetition C, D step operating procedure, distinguish in the order lifting successively, descend phase conductor to the installation site, finish successively Jiu Tazhong, down the phase cross-arm and hang in the dismounting work and new tower of gold utensil/annex, the phase cross-arm and the installment work of hanging gold utensil/annex down, so far new tower is all organized upright finishing, corresponding suspension gold utensil/annex installs, the only surplus body of the tower part of old tower;
F, by the method backward construction of the upright new Tata body of group, loose by root and to tear old tower angle steel open;
G, by adopting the method for " in the longitudinal space between the alive circuit of common-tower double-return road; the charged upright new Tata body that looses in strange land; charged old tower ground wire/lead is transferred to new tower; erect described second gin pole and come the old tower of charged dismounting in that old body of the tower is inboard ", finish the strange land rising rebuilding construction of the two division electricity transmission line tangent towers in 220kv double loop, avoid 2 circuits on common-tower double-return road to have a power failure simultaneously, improved the power grid security reliability;
Wherein, described charged loose upright new Tata body and ground line bracket lifting realize by described method of landing the upright tower of soaring gin pole is set; To being no more than the new body of the tower of existing transmission line wire height part, employing sets backguy form burst and carries out the erection tower material, new body of the tower near existing transmission line wire part does not adopt to set span wire system, but by setting girdle ring and body of the tower master material is connected and fixed; Adopt high strength insulation rope as tower material lifting rope in the whole construction course, adopt by the upright new Tata body of group in the longitudinal space of mode between the two-way live wire of root erection tower material, tower material member is from the body of the tower lifting along the line side, and its swing of rope control of passing through to insulate; After the tower material winches to the installation site, by staff's construction bolt of on tower, wearing screening clothing, installation at high altitude tower material; Constantly raise along with the body of the tower group is upright, the soaring gin pole that lands falls to assemble by hoisting frame, raises and lands soaring gin pole to the height that needs.
2. according to the two charged strange land rising of the division electricity transmission line tangent tower remodeling methods in the described double loop of claim 1, it is characterized in that in the installation process of described ground line bracket, by ground line bracket and cross-arm being divided into two of vertical ground, alleviate construction weight, line bracket horizontal line road, ground is divided into two, along line direction lifting, installation in position, after the angle steel connection between two ground line brackets, remove lifting rope along body of the tower.
3. according to the two charged strange land rising of the division electricity transmission line tangent tower remodeling methods in the described double loop of claim 1, it is characterized in that in the installation process of described cross-arm, phase cross-arm and cross-arm installation in position rope are burst lifting cross-arm in the utilization, by tackling system with the cross-arm sheet along vertically rise along the line side body of the tower winch to horizontal plane in place after, slowly unclamp auxiliary lifting rope and under manpower cooperates, make the cross-arm sheet steadily go to level, system releases body of the tower with cross-arm sheet level by the horizontally tracting rope, avoid rotating by the horizontal rope control tower sheet of insulation control simultaneously, installation personnel with its installation in position after, after treating that two cross-arms install, angle cleat is installed again.
4. according to the two charged strange land rising of the division electricity transmission line tangent tower remodeling methods in the described double loop of claim 1, it is characterized in that the order of the lifting of described lead by ground wire, upper, middle and lower phase, promote a phase conductor after installing a phase cross-arm, the safe distance when installing to increase next phase cross-arm; It is specifically undertaken by following step:
A, new tower utilization insulation rope promotes ground wire to old tower ground wire and hangs gold utensil/annex and do not stress in the mode of insulating block group after, remove old tower ground wire and hang gold utensil/annex, continue to promote ground wire to the installation site at Xin Tachu, install and hang gold utensil/annex;
Phase cross-arm in b, the new charged lifting of tower, the lifting work of last phase conductor; New tower on the phase cross-arm two secondary insulating block groups are installed, after phase conductor phase cross-arm to the old tower hangs gold utensil/annex and does not stress in the charged lifting, anchoring lifting rope, the height of retainer belt electric lead;
Existing equal potential working method is adopted in c, old tower position, removes phase cross-arm suspension gold utensil/annex on the old tower; Utilize second gin pole and insulation lifting rope then, loose and to tear on old tower ground line bracket and the old tower cross-arm mutually open;
D, treat on the old tower that the phase cross-arm is removed after, the phase cross-arm continues to promote and goes up phase conductor to the installation site on the new tower, adopts the equal potential working method that new tower is installed and hangs gold utensil/annex;
E, finish according to the above-mentioned sequence of operation in, the phase live wire is transferred to the operation of new tower cross-arm by old tower down;
F, suspension gold utensil/annex install and the equal potential working mode is adopted in dismounting work, the equal potential working hand is climbed to lead in place by insulated flexible ladder, lift two pairs and put forward line insulating block group, waiting to put forward the line step finishes, after the equal potential working hand is installed preformed armor rods, suspension clamp, stockbridge damper, cooperate with cross-arm head operation hand, synthetic insulator is installed.
5. according to the two charged strange land rising of the division electricity transmission line tangent tower remodeling methods in the described double loop of claim 1, it is characterized in that the high strength insulation rope of described high strength insulation rope for Φ 12, in the whole construction operation process, use high strength insulation rope as lifting rope, use the insulation rope to make horizontal rope control tower material; Utilize earth connection will land soaring gin pole simultaneously and link to each other, realize landing soaring rod grounded, the hoist engine ground connection of taking off with described new tower ground connection.
6. according to the two charged strange land rising of the division electricity transmission line tangent tower remodeling methods in the described double loop of claim 1, it is characterized in that carrying out in the process " circuit reclosing " relaying protection of the place alive circuit of stopping using in described construction procedure.
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| CN103132710A (en) * | 2011-12-01 | 2013-06-05 | 吉林省电力有限公司辽源供电公司 | Method of electriferous integral moving of iron tower of 500-kV electric transmission line |
| CN102684106B (en) * | 2012-05-09 | 2014-12-10 | 三峡大学 | Hot-line work overhauling kit and overhauling method of cathead tangent tower |
| CN103715630B (en) * | 2013-12-16 | 2016-08-17 | 国家电网公司 | The method entering same-tower double-circuit alternating-current transmission line tangent tower equal potential |
| CN103855643B (en) * | 2014-02-13 | 2017-04-05 | 国家电网公司 | It is powered to widen 220kV steel tower tower head operational methods |
| CN109610920A (en) * | 2018-12-10 | 2019-04-12 | 中国电建集团河南工程有限公司 | Transmission line of electricity single-column steel tube column construction method for hanging |
| CN111997430B (en) * | 2020-08-10 | 2021-07-30 | 安徽送变电工程有限公司 | High tower for line crossing in construction of extra-high voltage transmission line and assembling method thereof |
| CN115354882B (en) * | 2022-07-15 | 2023-08-22 | 安徽送变电工程有限公司 | Method for dismantling ultra-large spanning old electric tower |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1367559A (en) * | 2002-02-22 | 2002-09-04 | 陈宏� | Method for paying-off by utilizing overhead line and equipment for implementing said method |
| CN1860653A (en) * | 2003-08-29 | 2006-11-08 | 广达服务 | Live conductor stringing and splicing method and apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001186616A (en) * | 1999-12-24 | 2001-07-06 | Showa Electric Wire & Cable Co Ltd | Bypassing method for overhead wire |
-
2010
- 2010-09-27 CN CN 201010293395 patent/CN101958519B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1367559A (en) * | 2002-02-22 | 2002-09-04 | 陈宏� | Method for paying-off by utilizing overhead line and equipment for implementing said method |
| CN1860653A (en) * | 2003-08-29 | 2006-11-08 | 广达服务 | Live conductor stringing and splicing method and apparatus |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2001-186616A 2001.07.06 |
| 王志伟.500 kV输电线路带电整体移自立式铁塔可行性方案的探讨.《东北电力技术》.2003,(第7期),31-34. * |
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