CN103227431A - Method for replacing insulator chains in 220 kV long-span high tower in live working - Google Patents
Method for replacing insulator chains in 220 kV long-span high tower in live working Download PDFInfo
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- CN103227431A CN103227431A CN2013100869760A CN201310086976A CN103227431A CN 103227431 A CN103227431 A CN 103227431A CN 2013100869760 A CN2013100869760 A CN 2013100869760A CN 201310086976 A CN201310086976 A CN 201310086976A CN 103227431 A CN103227431 A CN 103227431A
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Abstract
The invention relates to an operating tool for replacing insulator chains in live working, particularly to a method for replacing insulator chains in a 220 kV long-span high tower in live working. The key point is that the technology bias is overcome in a way that arcing horns and grading rings on a yoke plate for connecting the insulator chains are temporarily dismantled on a cross arm of the 220 kV long-span high tower to reserve screw holes for connecting fixtures on the yoke plate; the upper fixture and the lower fixture are connected with the yoke plate to lift the insulator chains, and the stress borne by the entire tool is half of that in the prior art, so that bearing and operation on the big-load insulator chains can be realized; and an equipotential electrician is borne by a chairlift to enter and go out of the electric field at the cross arm, so that the safety and controllability are stronger, the operating method is simple, the operating tool can be directly obtained from the existing tools, time and labor saving as well as economy are realized, and the replacement of the insulator chains on a steel pipe pole high tower comes true.
Description
Technical field
The present invention relates to the big leap high tower of a kind of power tool of charged for replacement insulator string, particularly 220kV suspension insulator charged for replacement method.
Background technology
Along with technical development, on ultra-high-tension power transmission line, particularly on the high tower of some big leap transmission lines, the equipment that is adopted all is the implement of big load, and is special because of the high tower Type of equipment, load is big, is difficult to adopt the routine work instrument to be changed.
For example steel pipe pole is adopted in the high standing grain I of 220kV, the big leap high tower design in II road, leap mode with strain insulator-straight line-straight line-straight line-straight line-strain insulator, big crossing span is 795m, 1279m, 1237m, 1278m, 460m, the maximum perpendicular span is 2157m, the tower overall height is respectively 118m, 145m, 181m, 162m, and the engineering lead adopts two division extra-heavy shaped steel core aluminium alloy wires (in anticorrosion), sectional area S=729.0mm2, outside diameter d=35.1mm, calculated mass G=3297 ㎏/㎞; The every two strings of 22 FC400/205 of string employing that dangle mutually of high tower are formed, and monolithic glass insulator structure height is 205mm, and insulator string is long to be 4510mm, insulator string assembled height 5685mm, and the insulator string gross mass is 308 ㎏.Because the equipment of these big loads is several times of common line, common live line working wire grip is stressed too big, and operating difficulties can't carry out valid function to this equipment, increased operating personnel's labour intensity greatly, and operating efficiency is extremely low; And because the high tower height is high, its formed tower need be considered factors such as environment, wind lotus, so cross-arm complex structure, the particularly installation of insulator string, the every phase suspension insulator of high tower all is equipped with one group of arcing horn and one group of grading ring, can't find effective space to be used for the installation exercise instrument, therefore should cross over the high tower suspension insulator greatly and still can't carry out live line working.
Summary of the invention
The objective of the invention is to provides a kind of easy to operate, the big leap high tower of 220kV suspension insulator charged for replacement method of reducing labour intensity, increasing work efficiency according to the deficiencies in the prior art part.
The objective of the invention is to realize by following approach:
The big leap high tower of 220kV suspension insulator charged for replacement method, its main points are, comprise the steps:
One cover charged for replacement insulator string power tool is provided, this instrument includes jig, following jig, following jig, wire grip and insulated tension pole, the upper end of wire grip is connected with insulated tension pole, last jig and following jig are a kind of bent plate jig, include left side card and right card, left side card is a kind of opening fork-shaped, and fork pockets thickness laterally is penetrated with two bolts on the card of a left side and can overlaps the screw that is inserted in wherein greater than the yoke plate thickness that insulator string to be replaced connected; The right side card of following jig is connected with the bottom of wire grip, and the right side card of last jig is connected with the end of insulated tension pole;
One cover tackle pulley, lifting rope, pull rope, connection cord and insulation chair lift are provided, and tackle pulley includes top sheave group and lower sheave, and the top sheave group is made up of two pulleys that two centers of circle are located along the same line; The pulley that is positioned at the top in one end of lifting rope and the top sheave group is fixedlyed connected;
Plural number name high tower operating personnel and an equipotential electrician are provided, and described personnel carry on the cross-arm that above-mentioned charged for replacement insulator string power tool, tackle pulley, lifting rope, pull rope, connection cord and insulation chair lift all enter insulator string to be replaced and connected;
The high tower operating personnel with the firm colligation of the other end of lifting rope on the pull bar above the operation cross-arm, pull rope one end is fixed on the lower sheave, the other end is positioned at the pulley of top along same around the pulley, lower sheave and the top sheave group that are arranged in the below in walking around the top sheave group in regular turn, and controls by the high tower operating personnel is hand-held at last; In addition, again with the two ends of connection cord respectively with the top sheave group in be positioned at the below pulley and chair lift fixedly connected;
The high tower operating personnel is at grading ring and the arcing horn removed on the cross-arm on the cross-arm side yoke plate that insulator string connected, make on this cross-arm side yoke plate and vacate an installing hole, the left side card of going up jig in the charged for replacement insulator string power tool is inserted on this cross-arm side yoke plate to the declivity cover, and it is one of them screw is corresponding with installing hole, another screw is positioned at the lower surface of cross-arm side yoke plate, runs through on two screws then and installs set bolt;
After equipotential electrician carries out safety measure, be sitting on the chair lift, the high tower operating personnel controls pull rope well, under the cooperation of tackle pulley, the equipotential electrician is slowly transferred to the lead side;
Equipotential electrician catches lead to enter electric field rapidly when arriving the lead side, and straddles on the two root leads by shifting on the chair lift, accomplishes fluently safety belt, and moves to insulator string one side, and the high tower operating personnel is pulled away from the lead side with chair lift;
Provide a kind of insulation to transmit rope, to the insulate end that transmits rope of high tower operating personnel is transferred and is passed to the equipotential electrician, equipotential electrician will be insulated, and transmitting restricts ties up on the grading ring of lead side yoke plate, and dismounting grading ring bolt, grading ring is disassembled from lead side yoke plate, and under high tower operating personnel's cooperation, be delivered to the cross-arm place by insulation transmission rope; Vacate two installing holes on the lead side yoke plate this moment;
The high tower operating personnel transmits rope with the following jig in the charged for replacement insulator string power tool by insulation and sends the equipotential electrician to, equipotential electrician will play the left side of jig to block upward cover and be inserted on the lead side yoke plate, and with two installing holes on two screws aligning lead side yoke plates on the card of a left side, inserting bolt is fastenedly connected then;
The high tower operating personnel is connected the wire grip in the charged for replacement insulator string power tool with insulated tension pole, and an end of wire grip is transmitted rope by insulation send the equipotential electrician to, this moment, high tower operating personnel and equipotential electrician cooperated, by the high tower operating personnel insulated tension pole is connected to the right side card of jig, equipotential electrician is then with wire grip and following jig connection;
It is stressed to charged for replacement insulator string power tool that equipotential electrician operates wire grip, and further operation lifting lead is lax to insulator string again; Check, change insulator string,
Equipotential electrician operates wire grip once more and recovers stress up to insulator string, oppositely removes wire grip and following jig then, and installs grading ring; The high tower operating personnel removes insulated tension pole and last jig, then grading ring is transmitted rope by insulation and sends the equipotential electrician to, chair lift is passed to the equipotential electrician at last again, and the operation pull rope is moved the cross-arm place to carrying the chair lift of holding the equipotential electrician.
The main points one of the method for the invention are: at interim arcing horn and the grading ring of removing on the yoke plate that connects insulator string on the cross-arm of the big leap high tower of 220kV, to vacate the screw that can connect jig on yoke plate.This is a kind of off the beaten track method, in the operation of conventional belt charged renewal insulator string, those skilled in the art's way be on the cross-arm or with yoke plate that insulator string is connected on seek can the installation exercise instrument the place, because the installation of any gold utensil and structure are all carried out according to the electric operating standard, therefore those skilled in the art have formed technology prejudice under " industry standard " this inertial thinking, promptly can not expect changing the structure that gold utensil is installed, high more overhead line structures of electric pressure particularly, its safety standard is higher, and those skilled in the art have overcome this technology prejudice, in safe range, revised the part structure of gold utensil, for the charged for replacement insulator string provides installing space temporarily.
Two of main points of the present invention are, adopt upper and lower pair of jig and yoke plate to carry out ways of connecting and promote insulator string, can become like this and promote whole shelves lead into promoting the suffered power of a side yoke plate, original half of stressed need of kit realizes carrying and operation to big load insulator string like this.During operation, the left cutting ferrule that to go up jig and following jig respectively is inserted on the yoke plate that is connected the insulator string two ends, this moment the screw on the yoke plate be with the bent plate jig on corresponding the communicating of screw, and be fastenedly connected the firm clamping of jig, time jig and yoke plate in realizations by bolt.
Three of main points of the present invention are, adopt ski-lift carrying equipotential electrician by cross-arm place turnover electric field.Because the complex structure at cross-arm place, the steel pipe pole that covers sight line, gold utensil etc. are more, and the position is little, operate and need to teach many operating personnels to cooperate together for the insulator string of big load, therefore through after investigating in many ways, calculate and analyzing, the present invention adopts equipotential electrician of lead side configuration, but in the steel pipe pole high tower,, therefore need the special reliable and effective method that enters electric field that adopts because operating position is high.Carrying the equipotential electrician from cross-arm by the chair lift mode enters electric field and has solved the problems referred to above, at first, shorter from cross-arm to lead side operating distance, fail safe and controllability religion are strong, next is unsettled and vertically enters electric field that more selectable home can be arranged, and last operational method is simple, power tool can directly adopt existing instrument, time saving and energy saving and economical, make steel pipe pole high tower charged for replacement insulator string become a reality.
The present invention can further be specially:
The safe distance of high tower operating personnel and equipotential electrician's the person and entrained nonisulated instrument and electrified body is greater than 1.8 meters; Equipotential electrician passes in and out the combinational gap of electric field greater than 2.1 meters.
Equipotential electrician is the operating personnel who enters electric field, so its security needs have enough guarantees, comprises a complete set of screening clothing and the firm reserve security personnel rope that is connected.
The position that equipotential electrician arrives the lead side flushes with lead with its waist and is as the criterion.
Operating personnel's safety is at first guaranteed in described position, secondly be with can be effectively, operating distance is as the criterion reliably.In the process of test of many times, flush with lead as its benchmark that arrives the lead side with equipotential electrician's waist and can realize the best techniques effect.
When the equipotential electrician when transmitting or receive grading ring, the grading ring colligation with the state of horizontal traverse away from the insulator string transmission.
Because the transmission of grading ring is transmitted in electric field, considers the characteristic of grading ring, prevent that it from move and make it have unsafe factor in electric field, the horizontal traverse of needs transmits, and forbids vertical transmission.
Charged for replacement insulator string power tool of the present invention can also further be specially:
The right side card of last jig and following jig is a kind of solid component, and it intersects and fastening the connection with wire grip or insulated tension pole;
Or: right card also is a kind of opening fork-shaped, and fork pockets thickness is greater than the thickness of wire grip feed screw nut or insulated tension pole, laterally is penetrated with a kind of connecting pin on the fork wing and can be plugged on wherein hole;
Or: right card also is a kind of opening fork-shaped, and fork pockets thickness is greater than wire grip feed screw nut's thickness, and the connecting pin that end face laterally is penetrated with a kind of wire grip feed screw nut two ends on the fork wing can twist the groove that is supported therein.
Realize that by connecting pin right card and wire grip feed screw nut or insulated tension pole strand are connected, thereby can guarantee that wire grip can swing by relative bent plate card with insulated tension pole, make operation process convenient.
Mutual alignment structural relation between left side card and the right card can be specially:
Left side card is right relatively to block inclination, and the junction of the two is near card fork pockets root place, a left side, a kind of bending shape of jig integral body one-tenth.
Because the both sides of yoke plate are the inclined-plane, therefore, also form the diagonally extending shape accordingly, so not only lightly but also convenient the use with the left side card shape of yoke plate clamping.
Also because the both sides of yoke plate are the inclined-plane, the groove bottom of the left side card fork pockets that directly touches with this inclined-plane also is a kind of inclined-plane of relative fork pockets depth direction inclination accordingly like this.
Left side card fork pockets bottom land inclined-plane forms included angle A with right card length direction, and this included angle A and the formed included angle B in relative yoke plate bottom surface, inclined-plane, yoke plate both sides be complementary angle each other.
Like this, can make the length direction of right card vertical substantially with the length direction of wire grip.
Wire grip of the present invention can be the conventional wire grip that uses, and can also be following new structure:
Wire grip includes outer loop bar, nut sleeve, screw rod, operating grip, adjustment means, fixed mount and gear train; Outer loop bar comprises upper boom and lower beam, and nut sleeve is positioned at the inner chamber of outer loop bar, connects whole outer loop bar, and screw rod is arranged in the nut sleeve inner chamber, and two ends expose to outside the nut sleeve, and is respectively arranged with first connecting portion and second connecting portion; Adjustment means includes the cross bar that is connected with operating grip and perpendicular to cross bar and be positioned at the connecting rod of crossbar end, connecting rod and cross bar are T type structure, connecting rod is a kind of ratchet mechanism, and corresponding crossbar end is a kind of detent mechanism, and the two connects to form the click member; Respectively fixedly connected with lower beam with upper boom respectively by one group of fixed mount in the two ends of connecting rod; Gear train includes intermeshing driving wheel and driven pulley, wherein driving wheel be diameter than pinion, driven pulley is a larger diameter gear, driving wheel is installed in a side of connecting rod, between cross bar and fixed mount, driven pulley is fixedlyed connected with nut sleeve between upper boom and lower beam.
During use, rotate adjustment means, and drive the driving wheel rotation that is positioned on the connecting rod by operating grip, driving wheel further drives driven pulley and rotates, driven pulley drives nut sleeve and rotates, thereby the screw rod that is positioned at the nut sleeve inner chamber is moved up and down, to cooperate other insulating tool operations; Wherein said click member can make adjustment means drive connecting rod be one-directional rotation.Since wire grip of the present invention be used to promote or change equipment between length and distance, especially outer loop bar is separated, expose nut sleeve in the centre so that gear wheel to be installed, adopt pinion to drive the mode of gear wheel then, adjust the speed ratio of gear wheel and pinion and can save operation greatly firmly, make that operation is more convenient, laborsaving, significantly reduced labor intensity of operating personnel, improved operating efficiency.
The nut sleeve upper boom of loop bar outside is provided with spacing preiection with the relative position of following rod end surface.
Like this, this spacing preiection is used to limit upper boom and the relative position of lower beam on nut sleeve, simultaneously, and for driven pulley provides enough and reliable safe space.
Screw rod comprises screw rod and following screw rod, last screw rod is positioned at a side of nut sleeve inner chamber, an end that exposes to nut sleeve connects first connecting portion, following screw rod is positioned at another side of nut sleeve inner chamber, the other end that exposes to nut sleeve connects second connecting portion, and the internal thread of the nut sleeve that the corresponding spiral with following screw rod of last screw rod connects is rightabout screw thread.
Like this, with two left and right sides counterscrew that nut sleeve is screwed can be under the drive of nut sleeve, while is to two outsides or the medial movement of nut sleeve, thereby produce the flexible variation of axis, when the charged for replacement insulator, can provide the power of tightening up or loosening, be convenient to promote the insulator string of big load.Screw rod is divided into two sections, single screw rod compared to existing technology, can provide under the situation of same rotating distance in nut sleeve, obtain the stroke of double screw rod, thereby obtain double stroke distances, like this, under the prerequisite of the same stroke distances of needs, only need the operation rotating nut to overlap the stroke of half, the more laborsaving convenience of further feasible operation.
Further, be positioned at last screw rod and following screw rod on the end of nut sleeve inner chamber and be provided with retaining pin, the inboard, both ends in nut sleeve of correspondence is provided with spacing hole slot, and spacing hole slot and retaining pin are suitable.
Because screw rod is divided into two, so its total travel is also shorter, in use deviates from nut sleeve for preventing screw rod, and retaining pin preferably is installed, and makes the processing safety of instrument be protected.
The present invention can also further be specially:
In adjustment means, be provided with a cuphead pilotage in the cross bar, this cuphead pilotage one end withstands the ratchet in the detent mechanism, and the other end reaches the hold-down screw that is connected with spring by a spring and is connected the end that cross bar is connected with operating grip.
Cuphead pilotage is used for can be reliably and ratchet engaged with ratchet, guarantees the reliability of operation.
In sum, it is charged with changing method to the invention provides the big leap high tower of a kind of 220kV suspension insulator, its main points are: overcome technology prejudice, at interim arcing horn and the grading ring of removing on the yoke plate that connects insulator string on the cross-arm of the big leap high tower of 220kV, on yoke plate, to vacate the screw that can connect jig; Adopt upper and lower pair of jig and yoke plate to carry out ways of connecting and promote insulator string, half that stressed need of kit are original realizes carrying and operation to big load insulator string; Adopt ski-lift carrying equipotential electrician by cross-arm place turnover electric field, fail safe and controllability religion are strong, and operational method is simple, power tool can directly adopt existing instrument, and is time saving and energy saving and economical, makes steel pipe pole high tower charged for replacement insulator string become a reality.
Description of drawings
Figure 1 shows that the charged structural representation of big leap high tower suspension insulator of the present invention with changing device;
Figure 2 shows that the structural representation of going up jig/following jig in the charged for replacement device of the present invention;
Figure 3 shows that the plan structure figure of Fig. 2;
Figure 4 shows that the structural representation of wire grip in the invention charged for replacement device;
Figure 5 shows that the structural representation of the described turnover electric field of specific embodiment of the invention set of tools.
Below in conjunction with embodiment the present invention is described further.
Embodiment
Most preferred embodiment:
At first specifically introduce required various tool:
Charged for replacement insulator string power tool: with reference to accompanying drawing 1, include jig 1, following jig 2, wire grip 3 and insulated tension pole 4, wire grip 3 bottoms are connected with insulated tension pole 4.
With reference to accompanying drawing 2 and accompanying drawing 3, and in conjunction with the accompanying drawings 1, last jig 1 and following jig 2 are a kind of bent plate jig, include left side card 5 and right card 6, left side card 5 is a kind of opening fork-shaped, and fork pockets 7 thickness are greater than the yoke plate thickness that insulator string to be replaced connected, and the right relatively card 6 of left side card 5 tilts, and the junction of the two is near card 5 fork pockets 7 root places, a left side, and jig integral body becomes a kind of bending shape.Laterally be penetrated with two screws 8 that bolt sleeve can be inserted in wherein on the left side card 5; Two screws 8 are respectively at the bending place of jig and the end position of left side card.Consider the yoke plate difference that insulator string is connected up and down, two screw spacings on the left side card of last jig 1 are greater than two screw spacings on the left side card of following jig; Because be positioned at the screw of bending place on the left side card of last jig 1 and be with yoke plate on handle hole be corresponding, overlap the back and adopt bolt to be fastenedly connected; The screw that is positioned at left side card end then is positioned at the lower surface side of yoke plate, passes this screw by bolt or latch and forms a shearing strong point, to realize solid and reliable connection the between jig and the yoke plate.It is then all corresponding with the screw on the yoke plate that is positioned at the insulator string below that two screws are blocked on the left side of following jig 2, and all be fastenedly connected by bolt.
Because the both sides of yoke plate are the inclined-plane, also be a kind of inclined-plane of relative fork pockets depth direction inclination so accordingly with the groove bottom that 5 fork pockets 7 are blocked on the left side that this inclined-plane directly touches.Left side card fork pockets 7 bottom land inclined-planes form included angle A with right card length direction, and this included angle A and the formed included angle B in relative yoke plate bottom surface, inclined-plane, yoke plate both sides be complementary angle each other.
The right side card of last jig 1 is connected with the upper end of wire grip 3, and the right side card of following jig 2 is connected with the bottom of insulated tension pole 4.Be specially: right card 6 is a kind of solid component, and its end is provided with connecting hole 9, is used for realizing being fastenedly connected by fastening bolt with wire grip or insulated tension pole.
With reference to accompanying drawing 4, the wire grip in the above-mentioned charged for replacement device includes outer loop bar, nut sleeve 10, screw rod, operating grip 11, adjustment means, fixed mount and gear train; Outer loop bar comprises upper boom 12 and lower beam 13, nut sleeve 10 is positioned at the inner chamber of outer loop bar, connect whole outer loop bar (comprising upper boom 12 and lower beam 13), upper boom 12 and lower beam 13 are separately, lay respectively at the right and left of nut sleeve 10, nut sleeve 10 upper boom 12 of loop bar outside is provided with spacing preiection 24 with the relative position of lower beam 13 end faces.
Screw rod is arranged in nut sleeve 10 inner chambers, comprise that screw rod 15 under screw rod 14 and the following screw rod 15(is arranged in the inner chamber of lower beam 13, do not draw among the figure), last screw rod 14 is positioned at the limit, left side of nut sleeve 10 inner chambers, and an end that exposes to nut sleeve 10 is connected with first connecting portion 16; Following screw rod 6 is positioned at the right edge of nut sleeve 10 inner chambers, the end that exposes to nut sleeve 10 is connected with second connecting portion 17, last screw rod 14 is rightabout screw thread with the internal thread of the nut sleeve that following screw rod 15 corresponding spirals connect, the internal thread of adaptive its place nut sleeve of the screw thread on the two screw rods also is rightabout screw thread each other.Simultaneously be provided with retaining pin 25 on last screw rod 14 and following screw rod 15 are positioned at an end of nut sleeve 10 inner chambers, the inboard, both ends in nut sleeve 10 of correspondence is provided with spacing hole slot, and spacing hole slot and retaining pin 25 are suitable.
Adjustment means includes the cross bar 18 that is connected with operating grip 11 and perpendicular to cross bar 18 and be positioned at the connecting rod 19 of cross bar 18 ends, connecting rod 19 is T type structure with cross bar 18.Described fixed mount is two groups, every group of small slide 20 and ratchet bearing 21 that Construction integration is all arranged, connecting rod 19 is a kind of ratchet mechanism, the centre is a ratchet, two ends are on ratchet shaft and the ratchet bearing 21 that is connected respectively to one group of fixed mount, and then fixedly connected with lower beam 13 with upper boom 12 respectively by the small slide of corresponding group fixed mount.
One end of corresponding cross bar 18 is a kind of detent mechanism, include ratchet 22 and cuphead pilotage 23, cuphead pilotage 23 1 ends withstand the ratchet 22 in the detent mechanism, and the other end reaches the hold-down screw 27 that is connected with spring 26 by a spring 26 and is connected the end that cross bar 18 is connected with manual manipulation handle 11.Ratchet on the connecting rod 19 and the ratchet on the cross bar 22 are connected with a joggle and form the click member.
Gear train includes intermeshing driving wheel 28 and driven pulley 29, wherein driving wheel 28 is that diameter is than pinion, driven pulley 29 is a larger diameter gear, driving wheel 28 is installed in a side of connecting rod 19, be positioned between cross bar 18 and the fixed mount (and lower beam fixedly connected small slide), driven pulley 29 is fixedlyed connected with nut sleeve 10 between upper boom and lower beam.
First connecting portion 16 of wire grip and the right side card end portions cross of last jig 1 make the two corresponding perforation of connecting hole, re-use securing member such as bolt and connect.Second connecting portion 17 of same wire grip also adopts bolt to fixedly connected with the upper end of insulated tension pole.
Turnover electric field set of tools with reference to accompanying drawing 5, comprises coaster, lifting rope, pull rope 30, connection cord and insulation chair lift 31, and tackle pulley includes top sheave group 32 and lower sheave 33, and top sheave group 32 is made up of two pulleys that two centers of circle are located along the same line; The pulley that is positioned at the top in one end of lifting rope and the top sheave group is fixedlyed connected; With the firm colligation of the other end of lifting rope on the pull bar above the operation cross-arm; Pull rope 30 1 ends are fixed on the lower sheave 33, and the other end is positioned at the pulley of top along same around the pulley, lower sheave and the top sheave group that are arranged in the below in walking around the top sheave group in regular turn, and controls by the high tower operating personnel is hand-held at last; In addition, insulation chair lift 31 be a kind of scholar's font hanging ladder, and its upper end has connecting portion, can be fastenedly connected by the lower end connecting hole of bolt with itself and lower sheave 33, fixedly connected with lower sheave and scholar's font hanging ladder respectively in the two ends that also can pass through connection cord.
Concrete, to the high standing grain I of 220kV, that the big leap high tower in II road is implemented charged for replacement suspension insulator operational method is as follows:
Personnel arrangement:
Work director 1 people, specific responsibility guardian 1 people, electrician on the tower (high tower operating personnel) 5 people, equipotential electrician 1 people.
Main tool:
Charged for replacement insulator string power tool 1 cover; Screening clothing 1 cover; Insulation chair lift 1 pair, 2 of hook sticks of insulation, walk 1 and walk 1 in 2 tackle pulley, 1 cover, insulation ropes 2 (rope and pull rope are transmitted in insulation), insulation rope sling 4 (lifting rope, connection cord), 3 on coasters of insulation, reserve security personnel rope.
Operational method:
1, operation is the high standing grain I of 220kV road # 11 tower C phase mutually.The approach that equipotential electrician passes in and out electric field is: be responsible for tow out one by electrician on the tower and walk the following in vertical direction turnover electric field of two tackle pulley.
2, the electrician removes grading ring, arcing horn on the C phase cross-arm side yoke plate on the tower, will go up jig and be installed on the yoke plate.
3, the electrician accomplishes fluently chair lift hanging point rope sling on the tower above the mutually small size side cross-arm of C platform, and hang up properly away one walk two tackle pulley and chair lift, rope, reserve security personnel rope are transmitted in insulation.
4, the tower industry control system chair lift that powers on, chair lift position should be convenient to the height that the equipotential personnel take (because it is narrow to be made for the position that the industry personnel stand on the high tower, so the operating personnel should work good, and can not block the sight line between stay cord people and the equipotential people).
5, the equipotential electrician wears a complete set of qualified shielding, and each several part connects reliable, equipotential electrician has checked tackle pulley, reserve security personnel rope etc., carrying out suitable load impacts, chair lift (at this moment, the electrician should keep a firm hand on rope on the tower of responsible pull rope and security personnel's rope) is being taken in no abnormal back under work director's the permission.
6, should adjust sitting posture behind the chair on the isopotential electrical work area, be advisable with comfortable, work director and cooperation personnel are each connecting portion of checking tool once more, and the extension pulley group is responsible in no abnormal back under work director's agreement personnel slowly transfer the equipotential electrician to the lead side.
7, the equipotential electrician is when arriving lead side (waist and lead with the equipotential electrician maintain an equal level), and left hand catches lead to enter electric field rapidly under work director's permission.
8, the equipotential electrician is shifted by chair lift and straddles on the two root leads, and the electrician breaks away from lead with chair lift on the tower.
9, the equipotential electrician accomplishes fluently safety belt on lead.Equipotential electrician moves near the insulator string, with can remove grading ring, erecting tools is advisable (isopotential electrical foreman portion can not surmount second insulator).
10, the electrician will transmit rope and pass to the equipotential electrician on the tower, and equipotential electrician will be insulated, and transmitting restricts ties up on grading ring.
11, the equipotential electrician removes the grading ring bolt, and grading ring is disassembled from the right-angled intersection yoke plate, grading ring is passed to the cross-arm place under the cooperation of electrician on the tower.
12, the electrician will play jig to pass to the equipotential electrician on the tower, and equipotential electrician will play jig to be installed in yoke plate.
13, the electrician transmits with insulation and after rope ties insulated tension pole (assembling with leading screw) insulating bar (end that has leading screw) is passed to the equipotential electrician on the tower, electrician and equipotential electrician work in coordination on the tower, insulating bar is connected jig by electrician on the tower in advance, the back by the equipotential electrician with leading screw and following jig connection.
14, the equipotential electrician tightens up wire grip and suspends to the instrument stress, electrician and each junction of equipotential electrician checking tool on the tower, and wire grip is continued to operate by the equipotential electrician in no abnormal back, and to promote lead lax to insulator string.
15, electrician and equipotential electrician each junction of checking tool once more on the tower, no abnormal back equipotential electrician takes out the socket-clevis eye bolt, throws off being connected of insulator and socket-clevis eye.
16, the equipotential electrician reconnects insulator and socket-clevis eye, and the operation wire grip recovers the insulator running status.
17, electrician and the equipotential electrician removal tool of working in coordination on the tower.
18, electrician and equipotential electrician work in coordination grading ring, the arcing horn state that resumes operation are installed on the tower.
19, the electrician passes to the equipotential electrician with chair lift on the tower.Equipotential electrician is transferred to chair lift by lead, check good each link and reserve security personnel rope, untie the safety belt on the lead after no abnormal, withdrawing from electric field (electrician who is responsible for the control rope this moment on the tower should control well rope, prevent that the equipotential electrician from entering electric field once more) under work director's the permission.
14, the electrician slowly is promoted to the cross-arm place with the equipotential electrician on the tower.
15, removal tool, end-of-job.
Safety notice:
1, this subjob must be established special messenger's monitoring.
2, the operating personnel person and entrained nonisulated instrument are forbidden less than 1.8 meters with the safe distance of electrified body.
3, effective insulated lengths of insulation ropes and insulating bar should be forbidden respectively less than 1.8 meters and 2.1 meters.
4, it is inaccurate less than 2.1 meters that the equipotential electrician passes in and out the combinational gap of electric field.
5, the equipotential electrician should wear a complete set of qualified shielding, and each several part connects reliable.
6, it is firm that the equipotential electrician should check drafting tool before passing in and out electric field, reserve security personnel rope connects.
7, during work high above the ground, instrument, article should be placed firmly.
8, the operating personnel should accept work director's commander on the tower, and energy is concentrated, and notes not blocking the sight line of influence operation.
9, the equipotential electrician should maintain an equal level suitablely with waist and lead arriving the lead side, and the information during in time with the in-position is clear informs personnel on the tower, and the tower personnel should note listening to the information that the equipotential electrician is reflected.
The electrician who is responsible for the control rope when 10, the equipotential electrician withdraws from electric field on the tower should control rope well, prevents that the equipotential electrician from entering electric field once more.
11, the grading ring colligation should be with the state transfer of horizontal traverse, and should forbid vertical transmission away from insulator string.
Should be when 12, insulated tension pole transmits with the colligation of insulation rope.
13, leading screw, following jig pass to isopotential electrical and should contact with the equipotential electrician after the first contact wire man-hour.
14, all are with that object all needs fixation, tool materials transmission all to need colligation firm on the tower.
It is same as the prior art that the present invention does not state part.
Claims (10)
1.220kV cross over high tower suspension insulator charged for replacement method greatly, it is characterized in that, comprise the steps:
One cover charged for replacement insulator string power tool is provided, this instrument includes jig, following jig, following jig, wire grip and insulated tension pole, the upper end of wire grip is connected with insulated tension pole, last jig and following jig are a kind of bent plate jig, include left side card and right card, left side card is a kind of opening fork-shaped, and fork pockets thickness laterally is penetrated with two bolts on the card of a left side and can overlaps the screw that is inserted in wherein greater than the yoke plate thickness that insulator string to be replaced connected; The right side card of following jig is connected with the bottom of wire grip, and the right side card of last jig is connected with the end of insulated tension pole;
One cover tackle pulley, lifting rope, pull rope, connection cord and insulation chair lift are provided, and tackle pulley includes top sheave group and lower sheave, and the top sheave group is made up of two pulleys that two centers of circle are located along the same line; The pulley that is positioned at the top in one end of lifting rope and the top sheave group is fixedlyed connected;
Plural number name high tower operating personnel and an equipotential electrician are provided, and described personnel carry on the cross-arm that above-mentioned charged for replacement insulator string power tool, tackle pulley, lifting rope, pull rope, connection cord and insulation chair lift all enter insulator string to be replaced and connected;
The high tower operating personnel with the firm colligation of the other end of lifting rope on the pull bar above the operation cross-arm, pull rope one end is fixed on the lower sheave, the other end is positioned at the pulley of top along same around the pulley, lower sheave and the top sheave group that are arranged in the below in walking around the top sheave group in regular turn, and controls by the high tower operating personnel is hand-held at last; In addition, again with the two ends of connection cord respectively with the top sheave group in be positioned at the below pulley and chair lift fixedly connected;
The high tower operating personnel is at grading ring and the arcing horn removed on the cross-arm on the cross-arm side yoke plate that insulator string connected, make on this cross-arm side yoke plate and vacate an installing hole, the left side card of going up jig in the charged for replacement insulator string power tool is inserted on this cross-arm side yoke plate to the declivity cover, and it is one of them screw is corresponding with installing hole, another screw is positioned at the lower surface of cross-arm side yoke plate, runs through on two screws then and installs set bolt;
After equipotential electrician carries out safety measure, be sitting on the chair lift, the high tower operating personnel controls pull rope well, under the cooperation of tackle pulley, the equipotential electrician is slowly transferred to the lead side;
Equipotential electrician catches lead to enter electric field rapidly when arriving the lead side, and straddles on the two root leads by shifting on the chair lift, accomplishes fluently safety belt, and moves to insulator string one side, and the high tower operating personnel is pulled away from the lead side with chair lift;
Provide a kind of insulation to transmit rope, to the insulate end that transmits rope of high tower operating personnel is transferred and is passed to the equipotential electrician, equipotential electrician will be insulated, and transmitting restricts ties up on the grading ring of lead side yoke plate, and dismounting grading ring bolt, grading ring is disassembled from lead side yoke plate, and under high tower operating personnel's cooperation, be delivered to the cross-arm place by insulation transmission rope; Vacate two installing holes on the lead side yoke plate this moment;
The high tower operating personnel transmits rope with the following jig in the charged for replacement insulator string power tool by insulation and sends the equipotential electrician to, equipotential electrician will play the left side of jig to block upward cover and be inserted on the lead side yoke plate, and with two installing holes on two screws aligning lead side yoke plates on the card of a left side, inserting bolt is fastenedly connected then;
The high tower operating personnel is connected the wire grip in the charged for replacement insulator string power tool with insulated tension pole, and an end of wire grip is transmitted rope by insulation send the equipotential electrician to, this moment, high tower operating personnel and equipotential electrician cooperated, by the high tower operating personnel insulated tension pole is connected to the right side card of jig, equipotential electrician is then with wire grip and following jig connection;
It is stressed to charged for replacement insulator string power tool that equipotential electrician operates wire grip, and further operation lifting lead is lax to insulator string again; Check, change insulator string,
Equipotential electrician operates wire grip once more and recovers stress up to insulator string, oppositely removes wire grip and following jig then, and installs grading ring; The high tower operating personnel removes insulated tension pole and last jig, then grading ring is transmitted rope by insulation and sends the equipotential electrician to, chair lift is passed to the equipotential electrician at last again, and the operation pull rope is moved the cross-arm place to carrying the chair lift of holding the equipotential electrician.
2. the big leap high tower of 220kV according to claim 1 suspension insulator charged for replacement method is characterized in that, the safe distance of high tower operating personnel and equipotential electrician's the person and entrained nonisulated instrument and electrified body is greater than 1.8 meters; Equipotential electrician passes in and out the combinational gap of electric field greater than 2.1 meters.
3. the big leap high tower of 220kV according to claim 1 suspension insulator charged for replacement method is characterized in that, the position that equipotential electrician arrives the lead side flushes with lead with its waist and is as the criterion.
4. the big leap high tower of 220kV according to claim 1 suspension insulator charged for replacement method is characterized in that, when the equipotential electrician when transmitting or receive grading ring, the grading ring colligation with the state of horizontal traverse away from the insulator string transmission.
5. the big leap high tower of 220kV according to claim 1 suspension insulator charged for replacement method, it is characterized in that, in the described charged for replacement insulator string power tool, the right side card of last jig and following jig is a kind of solid component, and it intersects and fastening the connection with wire grip or insulated tension pole.
6. the big leap high tower of 220kV according to claim 1 suspension insulator charged for replacement method is characterized in that, left side card is right relatively to block inclination, and the junction of the two is near card fork pockets root place, a left side, a kind of bending shape of jig integral body one-tenth.
7. the big leap high tower of 220kV according to claim 1 suspension insulator charged for replacement method is characterized in that described wire grip includes outer loop bar, nut sleeve, screw rod, operating grip, adjustment means, fixed mount and gear train; Outer loop bar comprises upper boom and lower beam, and nut sleeve is positioned at the inner chamber of outer loop bar, connects whole outer loop bar, and screw rod is arranged in the nut sleeve inner chamber, and two ends expose to outside the nut sleeve, and is respectively arranged with first connecting portion and second connecting portion; Adjustment means includes the cross bar that is connected with operating grip and perpendicular to cross bar and be positioned at the connecting rod of crossbar end, connecting rod and cross bar are T type structure, connecting rod is a kind of ratchet mechanism, and corresponding crossbar end is a kind of detent mechanism, and the two connects to form the click member; Respectively fixedly connected with lower beam with upper boom respectively by one group of fixed mount in the two ends of connecting rod; Gear train includes intermeshing driving wheel and driven pulley, wherein driving wheel be diameter than pinion, driven pulley is a larger diameter gear, driving wheel is installed in a side of connecting rod, between cross bar and fixed mount, driven pulley is fixedlyed connected with nut sleeve between upper boom and lower beam.
8. the big leap high tower of 220kV according to claim 7 suspension insulator charged for replacement method, it is characterized in that, screw rod comprises screw rod and following screw rod, last screw rod is positioned at a side of nut sleeve inner chamber, an end that exposes to nut sleeve connects first connecting portion, following screw rod is positioned at another side of nut sleeve inner chamber, and the other end that exposes to nut sleeve connects second connecting portion, and the internal thread of the nut sleeve that the corresponding spiral with following screw rod of last screw rod connects is rightabout screw thread.
9. the big leap high tower of 220kV according to claim 7 suspension insulator charged for replacement method, it is characterized in that, be positioned at last screw rod and following screw rod on the end of nut sleeve inner chamber and be provided with retaining pin, the corresponding inboard, both ends in nut sleeve is provided with spacing hole slot, and spacing hole slot and retaining pin are suitable.
10. the big leap high tower of 220kV according to claim 7 suspension insulator charged for replacement method, it is characterized in that, in adjustment means, be provided with a cuphead pilotage in the cross bar, this cuphead pilotage one end withstands the ratchet in the detent mechanism, and the other end reaches the hold-down screw that is connected with spring by a spring and is connected the end that cross bar is connected with operating grip.
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| CN201310086976.0A CN103227431B (en) | 2013-03-19 | 2013-03-19 | 220kV long span super high town suspension insulator charged for replacement method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310086976.0A CN103227431B (en) | 2013-03-19 | 2013-03-19 | 220kV long span super high town suspension insulator charged for replacement method |
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| CN103227431B CN103227431B (en) | 2015-12-23 |
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| CN103825222A (en) * | 2014-03-25 | 2014-05-28 | 国家电网公司 | Tool for changing 220kV narrow base tower strain insulator string with charges |
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| CN103683110A (en) * | 2013-12-26 | 2014-03-26 | 国家电网公司 | L-LF type insulator string ground potential live replacement method |
| CN103683110B (en) * | 2013-12-26 | 2016-10-19 | 国家电网公司 | L-LF pattern insulator chain ground potential electrification replacing operational method |
| CN103715633A (en) * | 2014-01-20 | 2014-04-09 | 国家电网公司 | Clamping device and method for replacing single-hole connecting plate strain insulator string |
| CN103715633B (en) * | 2014-01-20 | 2016-03-30 | 国家电网公司 | Strain insulator single hole yoke plate replacing insulator string method |
| CN103825223B (en) * | 2014-03-25 | 2016-09-14 | 国家电网公司 | Charged for replacement 220KV narrow base tower strain insulator string tool and operational method |
| CN103825222A (en) * | 2014-03-25 | 2014-05-28 | 国家电网公司 | Tool for changing 220kV narrow base tower strain insulator string with charges |
| CN103825223A (en) * | 2014-03-25 | 2014-05-28 | 国家电网公司 | Tool and working method for live change of 220KV narrow base tower strain insulator string |
| CN103825222B (en) * | 2014-03-25 | 2016-09-14 | 国家电网公司 | A kind of charged for replacement 220kV narrow base tower strain insulator string instrument |
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| CN104218493B (en) * | 2014-08-13 | 2017-03-01 | 国家电网公司 | ± 800kV UHVDC Transmission Lines live-line replacing strain hard tube mother's wire jumper insulator technique |
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| CN104538891B (en) * | 2014-12-15 | 2017-09-26 | 国家电网公司 | A kind of composite insulator outlet method |
| CN105406401A (en) * | 2015-12-22 | 2016-03-16 | 国网福建省电力有限公司泉州供电公司 | Triangular yokeplate clamping apparatus, double-string strain insulator replacing device and double-string strain insulator replacing method |
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| CN107342553A (en) * | 2017-04-14 | 2017-11-10 | 国家电网公司 | A kind of the replacing fixture and replacing options of straight line duplex V insulator strings |
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| CN108206482A (en) * | 2018-01-23 | 2018-06-26 | 国网福建省电力有限公司 | Without handle hole LF type yoke plate isolator hot-line replacing operational methods |
| CN108206482B (en) * | 2018-01-23 | 2024-01-05 | 国网福建省电力有限公司 | Live replacement operation method for LF type yoke plate insulator without operation hole |
| CN109616945A (en) * | 2018-12-17 | 2019-04-12 | 广东电网有限责任公司 | A kind of power line hot line robot electric-control system and electric-control method |
| CN109830913A (en) * | 2019-02-11 | 2019-05-31 | 国家电网有限公司 | The combination tool and method of vertical rotary method replacement direct current grounding pole line tension string |
| CN110112678A (en) * | 2019-06-20 | 2019-08-09 | 中国南方电网有限责任公司超高压输电公司柳州局 | A kind of complete Work tool of charged for replacement duplex V-type pendency composite insulator |
| CN114273901A (en) * | 2022-01-25 | 2022-04-05 | 国网安徽省电力有限公司电力科学研究院 | Integrated disassembling and assembling device for pin insulator |
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| CN114552482A (en) * | 2022-03-18 | 2022-05-27 | 广东电网有限责任公司 | Insulator replacement tool |
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