CN109193454B - Operation method for replacing 500kV aerodynamic insulator and closed clamping yoke plate device thereof - Google Patents

Abstract

The invention discloses an operation method for replacing a 500kV aerodynamic insulator and a closed clamping and connecting plate device thereof. The damaged aerodynamic insulator is located between the upper reinforcing fixture and the lower reinforcing fixture, and the damaged aerodynamic insulator can be replaced without being stressed. The invention has the characteristics of safe and reliable replacement of damaged aerodynamic insulators and conventional insulators, no need of additionally purchasing a special aerodynamic insulator closed clamp, simple operation process, quick and convenient replacement, high efficiency, reliable connection and the like.

Description

Operation method for replacing 500kV aerodynamic insulator and closed clamping yoke plate device thereof

Technical Field

The invention relates to an operation method for 500kV power grid power failure maintenance, in particular to an operation method for replacing a 500kV aerodynamic insulator and a closed clamping and connecting plate device thereof.

Background

At present, 500kV power transmission lines in Jiangxi province reach more than 4000 kilometers, and most of insulators of the power transmission lines are transformed in ice disaster. The technical requirement of transformation is that the conventional insulators are inserted into the aerodynamic insulator according to a certain number rule in the whole string of conventional insulators. Due to the fact that the disc diameter difference exists between the conventional insulator and the large disc diameter insulator, when the large disc diameter insulator is damaged and needs to be replaced, the damaged large disc diameter insulator cannot be replaced normally by a closed clamping operation method widely applied to conventional operation.

Disclosure of Invention

The first purpose of the invention is to provide an operation method for replacing 500kV aerodynamic insulators, which has the advantages of simple operation process, quick and convenient replacement, time and labor saving and high efficiency

The second purpose of the invention is to provide a 500kV aerodynamic insulator universal closed clamping connection plate device which can safely and reliably replace damaged aerodynamic insulators and conventional insulators, does not need to additionally purchase a special aerodynamic insulator closed clamp, and is light, flexible, safe and durable in installation.

The first object of the present invention is achieved by:

an operation method for replacing a 500kV aerodynamic insulator is characterized in that: the method comprises the following specific steps:

A. climbing a tower: before starting, the high-altitude operation personnel check the personal protection tool, after arriving at an operation point, make personal safety protection measures, then the high-altitude operation personnel climb to an operation position, and respectively install the second conductor at a conductor end and an iron tower end according to operation requirements;

B. the yoke plate on the installation left side, the yoke plate on the right side, go up fixture and last reinforcement fixture: selecting a conventional insulator above the damaged and to-be-replaced aerodynamic insulator, fixing a left trunnion and a right trunnion of an upper fixture on an elliptical hole of a left upper connecting plate and an elliptical hole of a right upper connecting plate respectively by using a check bolt and a nut, and fixing the left trunnion and the right trunnion of an upper reinforcing fixture on an inner circular hole of the left upper connecting plate and an inner circular hole of the right upper connecting plate respectively by using the check bolt and the nut, so that the left upper connecting plate and the right upper connecting plate are fixed together by the upper fixture and the upper reinforcing fixture, and the conventional insulator above the aerodynamic insulator is clamped between the parallel upper fixture and the upper reinforcing fixture;

C. install upper left connecting rod, left lead screw and left lower connecting rod: the outward end of the left upper connecting rod and the excircle hole of the left upper connecting plate are fixed together by using a check bolt and a nut, and the inward end of the left upper connecting rod and the inward end of the left lower connecting rod are connected together by using a left screw rod;

D. installing an upper right connecting rod, a right screw rod and a lower right connecting rod: the outward end of the upper right connecting rod and the excircle hole of the upper right connecting plate are fixed together by a check bolt and a nut, and the inward end of the upper right connecting rod and the inward end of the lower right connecting rod are connected together by a right screw rod;

E. installing a left lower yoke plate and a right lower yoke plate: fixing the outer round hole of the left lower yoke plate and the outward end of the left lower connecting rod together by using a check bolt and a nut, and fixing the outer round hole of the right lower yoke plate and the outward end of the right lower connecting rod together by using the check bolt and the nut;

F. installing a lower fixture and a lower reinforcing fixture: selecting a conventional insulator below the damaged and to-be-replaced aerodynamic insulator, fixing a left trunnion and a right trunnion of a lower fixture on an elliptical hole of a left lower connecting plate and an elliptical hole of a right lower connecting plate respectively by using a check bolt and a nut, and fixing the left trunnion and the right trunnion of a lower reinforcing fixture on an inner circular hole of the left lower connecting plate and an inner circular hole of the right lower connecting plate respectively by using the check bolt and the nut, so that the left lower connecting plate and the right lower connecting plate are fixed together by the lower fixture and the lower reinforcing fixture, and the conventional insulator below the aerodynamic insulator is clamped between the parallel lower fixture and the lower reinforcing fixture; thus, the left upper yoke plate, the right upper yoke plate, the upper fixture, the upper reinforcing fixture, the left upper connecting rod, the left screw rod, the left lower connecting rod, the right upper connecting rod, the right screw rod, the right lower connecting rod, the left lower yoke plate, the right lower yoke plate, the lower fixture and the lower reinforcing fixture are fixed into a whole to form a closed yoke plate device;

G. tightening a closed clamping plate device: the left screw crank positioned in the middle of the left screw is shaken to screw the tension between the upper left connecting rod and the lower left connecting rod, the right screw crank positioned in the middle of the right screw is shaken to screw the tension between the upper right connecting rod and the lower right connecting rod, so that the weight of the closed clamping plate device is hung on a conventional insulator above the damaged aerodynamic insulator, the tension of a wire is completely transferred to the closed clamping plate device, and at the moment, the aerodynamic insulator to be replaced positioned between the upper reinforcing fixture and the lower reinforcing fixture is in an approximately suspended state;

H. replacing damaged aerodynamic insulation: checking whether the stress of the closed clamping plate device is normal, picking off the damaged aerodynamic insulator according to a conventional method after the normal stress is answered, and then loading a new aerodynamic insulator; confirming the complete falling position of the R pin of the new aerodynamic insulator, respectively shaking the left screw rod crank and the right screw rod crank, loosening the tension between the upper left connecting rod and the lower left connecting rod and the tension between the upper right connecting rod and the lower right connecting rod, and transferring the tension on the closed clamping plate device to the insulator string again;

I. dismantling the closed clamping plate device: in the dismantling process, parts on the closed type clamping plate device are dismantled in sequence according to the reverse sequence of the steps B-G and are placed on the ground one by one;

J. the following steps: and (4) removing the second protection of the lead by the aerial worker, cleaning the tower, lowering the operation tool to the ground, and taking the aerial worker off the tower after confirming that no object remains on the tower before taking off the tower.

The second object of the invention is achieved by:

a closed clamping plate device universal for 500kV aerodynamic insulators comprises a conventional insulator closed clamp, wherein the conventional insulator closed clamp consists of an upper clamp, a lower clamp, an upper left connecting rod, a lower left connecting rod, an upper right connecting rod, a lower right connecting rod, a left screw rod, a right screw rod, a left screw rod crank and a right screw rod crank which can be closed into a whole through connection, the upper clamp and the lower clamp are completely the same in shape, the upper left connecting rod, the lower left connecting rod, the upper right connecting rod and the lower right connecting rod are completely the same in shape, a clamp round hole for allowing an upper fixing head in the middle of the top of a conventional insulator to pass through is arranged in the middle of the upper clamp and the lower clamp, the inward end of the upper left connecting rod and the inward end of the lower left connecting rod are connected together through the left screw rod crank fixed in the middle of the left screw rod, and the tightness between the upper left connecting rod and the lower left connecting rod is screwed or loosened through rotation, the right side lead screw links together the connection rod on the right side inwards with the connection rod under the right side to through the rotation of fixing the right lead screw crank in the middle of the right lead screw the tightness between the connection rod on the right side and the connection rod under the right side is screwed or loosened, the characteristic is: the device comprises a five-sided body, and is characterized by further comprising an upper left connecting plate, a lower left connecting plate, an upper right connecting plate, a lower right connecting plate, an upper reinforcing fixture and a lower reinforcing fixture, wherein the upper left connecting plate, the lower left connecting plate, the upper right connecting plate and the lower right connecting plate are made of metal and have the same shape, the vertical shapes of the upper left connecting plate, the lower left connecting plate, the upper right connecting plate and the lower right connecting plate are all five-sided bodies formed by three right angles and two obtuse angles, the obtuse angles of the five-sided bodies face outwards, an outer circular hole and an inner circular hole which have the same diameter are respectively arranged at the left and right straight angles of the five-sided bodies, a vertical elliptical hole is arranged at the third right angle of the five-sided bodies, the outer circular hole and the inner circular hole are on the same horizontal line, and the elliptical hole and; the shapes of the upper reinforcing fixture and the lower reinforcing fixture are completely the same as the shapes of the upper fixture and the lower fixture;

the anti-loosening bolt penetrates through the elliptical hole of the left upper connecting plate and then fixes the left trunnion of the upper fixture and the top of the left upper connecting plate together with the nut; the anti-loosening bolt penetrates through the elliptical hole of the right upper connecting plate and then fixes the right trunnion of the upper fixture and the top of the right upper connecting plate together with the nut; the anti-loosening bolt penetrates through the elliptical hole of the left lower connecting plate and then fixes the left trunnion of the lower fixture and the bottom of the left lower connecting plate together with the nut; the anti-loosening bolt penetrates through the elliptical hole of the right lower connecting plate and then fixes the right trunnion of the lower fixture and the bottom of the right lower connecting plate together with the nut; a conventional insulator is clamped above the damaged aerodynamic insulator, between the upper fixture and the upper reinforcing fixture, and a conventional insulator is clamped below the damaged aerodynamic insulator, between the lower fixture and the lower reinforcing fixture, and the damaged aerodynamic insulator is positioned between the upper reinforcing fixture and the lower reinforcing fixture.

The inner-facing side walls of the upper left connecting plate, the lower left connecting plate, the upper right connecting plate and the lower right connecting plate are provided with fixture clamping grooves with inward openings, and left trunnions or right trunnions of the upper fixture, the lower fixture, the upper reinforcing fixture and the lower reinforcing fixture can be inserted into the fixture clamping grooves.

The invention is characterized in that a left upper yoke plate, a left lower yoke plate, a right upper yoke plate, a right lower yoke plate, an upper reinforcing fixture and a lower reinforcing fixture are additionally arranged on the basis of a conventional insulator closed clamp, the left upper yoke plate, the left lower yoke plate, the right upper yoke plate, the right lower yoke plate, the upper reinforcing fixture and the lower reinforcing fixture are connected into a whole to form a closed clamping plate device with a closed frame structure, the width of the conventional insulator closed clamp is enlarged by the left upper yoke plate, the left lower yoke plate, the right upper yoke plate and the right lower yoke plate, and the distance between a left screw rod and a right screw rod is larger than the disc diameter of an aerodynamic insulator, so that the aerodynamic insulator can be framed in the invention. The conventional insulator above the damaged aerodynamic insulator is clamped between an upper fixture and an upper reinforcing fixture, the conventional insulator below the damaged aerodynamic insulator is clamped between a lower fixture and a lower reinforcing fixture, the damaged aerodynamic insulator is positioned between the upper reinforcing fixture and the lower reinforcing fixture, an upper left connecting rod, a lower left connecting rod and a left screw rod, an upper right connecting rod, the lower right connecting rod and the right screw rod can draw the conventional insulators above and below the aerodynamic insulator together, the conventional insulator below the middle aerodynamic insulator does not need to be hung any more, the aerodynamic insulator is not stressed any more, and the damaged aerodynamic insulator can be replaced. Therefore, the aerial operation personnel can remove the damaged aerodynamic insulator in the middle, replace the new aerodynamic insulator, and remove the insulator to restore the original shape after the replacement. In the invention, the inward-opening clamp clamping grooves are formed in the inward-facing side walls of the left upper connecting plate, the left lower connecting plate, the right upper connecting plate and the right lower connecting plate, and the left trunnion or the right trunnion of the upper clamp, the lower clamp, the upper reinforcing clamp and the lower reinforcing clamp can be inserted into the clamp clamping grooves, so that the connection is firmer, the clamps and the connecting plates cannot fall off, and the safety is higher. The left upper connecting plate, the left lower connecting plate, the right upper connecting plate and the right lower connecting plate are all made of titanium alloy materials.

Therefore, the invention has the following four characteristics:

1. the invention is light and convenient to use: after the conventional insulator closed type clamp is arranged into the four same connecting plates according to corresponding mounting holes (the elliptical hole, the outer circular hole and the inner circular hole), the conventional insulator closed type clamp and the four connecting plates form a whole, and overhead workers can use the device to overhaul and replace the aerodynamic insulator on the flower arrangement insulator string;

2. the space between the left screw rod and the right screw rod which bear the weight of the conventional insulator closed clamp can be enlarged without influencing the function of the conventional insulator closed clamp, so that the aerodynamic insulator can be replaced on the basis of utilizing the original conventional insulator closed clamp, a special aerodynamic insulator closed clamp does not need to be additionally purchased, and the overhead working personnel can conveniently operate while the expenditure is saved;

3. the operation process is simple, the replacement is quick and convenient, the time and the labor are saved, and the efficiency is high;

4. reliable connection, light and flexible installation, safety, durability and simple structure.

Drawings

FIG. 1 is a schematic structural view of a closed card coupling plate device of the present invention;

FIG. 2 is a schematic structural view of a left lower yoke plate;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a sectional view taken along line B-B in fig. 2.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings.

An operation method for replacing a 500kV aerodynamic insulator comprises the following specific steps:

A. climbing a tower: before starting, the high-altitude operation personnel check the personal protection tool, after arriving at an operation point, make personal safety protection measures, then the high-altitude operation personnel climb to an operation position, and respectively install the second conductor at a conductor end and an iron tower end according to operation requirements;

B. install upper left yoke plate 3, upper right yoke plate 5, go up fixture 101 and go up and consolidate fixture 7: selecting a damaged conventional insulator 2 above the aerodynamic insulator 9 to be replaced, fixing a left trunnion 112 and a right trunnion 113 of an upper fixture 101 on an oval hole 11 of a left upper connecting plate 3 and an oval hole 11 of a right upper connecting plate 5 respectively by using a check bolt and a nut, fixing the left trunnion 112 and the right trunnion 113 of an upper reinforcing fixture 7 on an inner circular hole 12 of the left upper connecting plate 3 and an inner circular hole 12 of the right upper connecting plate 5 respectively by using the check bolt and the nut, so that the left upper connecting plate 3 and the right upper connecting plate 5 are fixed together by the upper fixture 101 and the upper reinforcing fixture 7, and the conventional insulator 2 above the aerodynamic insulator 9 is clamped between the upper fixture 101 and the upper reinforcing fixture 7 which are parallel;

C. installing an upper left connecting rod 103, a left screw rod 105 and a lower left connecting rod 104: the outward end of the left upper connecting rod 103 and the excircle hole 13 of the left upper connecting plate 3 are fixed together by using a check bolt and a nut, and the inward end of the left upper connecting rod 103 and the inward end of the left lower connecting rod 104 are connected together by using a left screw rod 105;

D. installing a right upper connecting rod 107, a right screw rod 109 and a right lower connecting rod 108: the outward end of the upper right connecting rod 107 and the excircle hole 13 of the upper right connecting plate 5 are fixed together by a check bolt and a nut, and the inward end of the upper right connecting rod 107 and the inward end of the lower right connecting rod 108 are connected together by a right screw rod 109;

E. installing a left lower connecting plate 4 and a right lower connecting plate 6: the outer circle hole 13 of the left lower connecting plate 4 and the outer end of the left lower connecting rod 104 are fixed together by a check bolt and a nut, and the outer circle hole 13 of the right lower connecting plate 6 and the outer end of the right lower connecting rod 108 are fixed together by a check bolt and a nut;

F. installing lower jig 102 and lower reinforcing jig 8: selecting a damaged conventional insulator 2 below the aerodynamic insulator 9 to be replaced, fixing a left trunnion 112 and a right trunnion 113 of a lower fixture 102 on an oval hole 11 of a left lower connecting plate 4 and an oval hole 11 of a right lower connecting plate 6 respectively by using a check bolt and a nut, fixing the left trunnion 112 and the right trunnion 113 of a lower reinforcing fixture 8 on an inner circular hole 12 of the left lower connecting plate 4 and an inner circular hole 12 of the right lower connecting plate 6 respectively by using the check bolt and the nut, so that the left lower connecting plate 4 and the right lower connecting plate 6 are fixed together by the lower fixture 102 and the lower reinforcing fixture 8, and clamping the conventional insulator 2 below the aerodynamic insulator 9 between the parallel lower fixture 102 and the lower reinforcing fixture 8; thus, the left upper connecting plate 3, the right upper connecting plate 5, the upper fixture 101, the upper reinforcing fixture 7, the left upper connecting rod 103, the left screw rod 105, the left lower connecting rod 104, the right upper connecting rod 107, the right screw rod 109, the right lower connecting rod 108, the left lower connecting plate 4, the right lower connecting plate 6, the lower fixture 102 and the lower reinforcing fixture 8 are fixed into a whole to form a closed clamping plate device;

G. tightening a closed clamping plate device: shaking a left screw crank 106 positioned in the middle of a left screw 105 to tighten the tightness between an upper left connecting rod 103 and a lower left connecting rod 104, shaking a right screw crank 110 positioned in the middle of a right screw 109 to tighten the tightness between an upper right connecting rod 107 and a lower right connecting rod 108, so that the weight of the closed clamping plate device is hung on a conventional insulator 2 above the damaged aerodynamic insulator 9, and the tension of a lead is completely transferred to the closed clamping plate device, and at the moment, the aerodynamic insulator 9 to be replaced positioned between an upper reinforcing clamp 7 and a lower reinforcing clamp 8 is in an approximately suspended state;

H. replacement of damaged aerodynamic insulation 9: checking whether the stress of the closed clamping plate device is normal, picking off the damaged aerodynamic insulator 9 according to a conventional method after the normal stress is answered, and then loading a new aerodynamic insulator 9; confirming that the R pin of the new aerodynamic insulator 9 completely falls, respectively shaking the left screw rod crank 106 and the right screw rod crank 110, loosening the tension between the upper left connecting rod 103 and the lower left connecting rod 104 and the tension between the upper right connecting rod 107 and the lower right connecting rod 108, and transferring the tension on the closed clamping plate device to the insulator chain again;

I. dismantling the closed clamping plate device: in the dismantling process, parts on the closed type clamping plate device are dismantled in sequence according to the reverse sequence of the steps A-E and are placed on the ground one by one;

J. the following steps: and (4) removing the second protection of the lead by the aerial worker, cleaning the tower, lowering the operation tool to the ground, and taking the aerial worker off the tower after confirming that no object remains on the tower before taking off the tower.

A500 kV aerodynamic insulator universal closed clamping connection plate device comprises a conventional insulator closed clamp 1, a left upper connection plate 3, a left lower connection plate 4, a right upper connection plate 5, a right lower connection plate 6, an upper reinforcing clamp 7 and a lower reinforcing clamp 8, wherein the conventional insulator closed clamp 1 consists of an upper clamp 101, a lower clamp 102, a left upper connecting rod 103, a left lower connecting rod 104, a right upper connecting rod 107, a right lower connecting rod 108, a left screw rod 105, a right screw rod 109, a left screw rod crank 106 and a right screw rod crank 110 which can be connected into a closed whole, the upper clamp 101 and the lower clamp 102 are completely the same in shape, the left upper connecting rod 103, the left lower connecting rod 104, the right upper connecting rod 107 and the right lower connecting rod 108 are completely the same in shape, a clamp 111 round hole for an upper fixing head 21 in the middle of the top of the conventional insulator 2 to penetrate is arranged between the upper clamp 101 and the lower clamp 102, the inward end of the left upper connecting rod 103 and the inward end of the left lower connecting rod 104 are connected together by the left, the tightness between the upper left connecting rod 103 and the lower left connecting rod 104 is screwed or loosened by the rotation of a left screw crank 106 fixed in the middle of a left screw 105, the inward end of the upper right connecting rod 107 and the inward end of a right lower connecting rod 108 are connected together by a right screw 109, the tightness between the upper right connecting rod 107 and the right lower connecting rod 108 is screwed or loosened by the rotation of a right screw crank 110 fixed in the middle of the right screw 109, the shapes of the upper left connecting plate 3, the lower left connecting plate 4, the upper right connecting plate 5 and the lower right connecting plate 6 which are made of metal are completely the same, the vertical shapes of the upper left connecting plate 3, the lower left connecting plate 4, the upper right connecting plate 5 and the lower right connecting plate 6 are all pentagonal bodies consisting of three right angles and two obtuse angles, the obtuse angles of the pentagonal bodies face outwards, an excircle hole 8 and an inner circle hole 9 with the same diameter are respectively arranged at the left and right angles of the pentagonal bodies, a vertical right angle 11 is arranged at the position, the outer circular hole 13 and the inner circular hole 12 are on the same horizontal line, and the elliptical hole 11 and the inner circular hole 12 are on the same vertical line; the upper and lower reinforcing jigs 7 and 8 have the same shape as the upper and lower jigs 101 and 102;

the anti-loosening bolt 10 penetrates through the oval hole 11 of the left upper connecting plate 3 and then fixes the left trunnion 112 of the upper fixture 101 and the top of the left upper connecting plate 3 together with the nut, the anti-loosening bolt 10 penetrates through the inner circular hole 12 of the left upper connecting plate 3 and then fixes the left trunnion 112 of the upper reinforcing fixture 7 and the bottom of the right end of the left upper connecting plate 3 together with the nut, and the anti-loosening bolt 10 penetrates through the outer circular hole of the left upper connecting plate 3 and then fixes the outward end of the left upper connecting rod 103 and the bottom of the left end of the left upper connecting plate 3 together with the nut; the anti-loose bolt 10 penetrates through the elliptical hole 11 of the upper right link plate 5 and then fixes the right trunnion 113 of the upper fixture 101 and the top of the upper right link plate 5 together with the nut, the anti-loose bolt 10 penetrates through the inner circular hole 12 of the upper right link plate 5 and then fixes the right trunnion 113 of the upper reinforcing fixture 7 and the bottom of the left end of the upper right link plate 5 together with the nut, and the anti-loose bolt 10 penetrates through the outer circular hole 13 of the upper right link plate 5 and then fixes the outward end of the upper right connecting rod 107 and the bottom of the right end of the upper right link plate 5 together with the nut; the anti-loose bolt 10 penetrates through the elliptical hole 11 of the left lower connecting plate 4 and then fixes the left trunnion 112 of the lower clamping device 102 and the bottom of the left lower connecting plate 4 together with the nut, the anti-loose bolt 10 penetrates through the inner circular hole 12 of the left lower connecting plate 4 and then fixes the left trunnion 112 of the lower reinforcing clamping device 8 and the top of the right end of the left lower connecting plate 4 together with the nut, and the anti-loose bolt 10 penetrates through the outer circular hole 13 of the left lower connecting plate 4 and then fixes the outward end of the left lower connecting rod 104 and the top of the left end of the left lower connecting plate 4 together with the nut; the anti-loose bolt 10 penetrates through the elliptical hole 11 of the right lower connecting plate 6 and then fixes the right trunnion 113 of the lower clamping apparatus 102 and the bottom of the right lower connecting plate 6 together with the nut, the anti-loose bolt 10 penetrates through the inner circular hole 12 of the right lower connecting plate 6 and then fixes the right trunnion 113 of the lower reinforcing clamping apparatus 8 and the top of the left end of the right lower connecting plate 6 together with the nut, and the anti-loose bolt 10 penetrates through the outer circular hole 13 of the right lower connecting plate 6 and then fixes the outward end of the right lower connecting rod 108 and the top of the right end of the right lower connecting plate 6 together with the nut; a conventional insulator 2 is clamped above the damaged aerodynamic insulator 9 between the upper jig 101 and the upper reinforcing jig 7, a conventional insulator 2 is clamped below the damaged aerodynamic insulator 9 between the lower jig 102 and the lower reinforcing jig 8, and the damaged aerodynamic insulator 9 is positioned between the upper reinforcing jig 7 and the lower reinforcing jig 8.

Inward-opening clamp clamping grooves 14 are formed in the inner end side walls of the left upper connecting plate 3, the left lower connecting plate 4, the right upper connecting plate 5 and the right lower connecting plate 6, and left trunnions or right trunnions of the upper clamp 101, the lower clamp 102, the upper reinforcing clamp 7 and the lower reinforcing clamp 8 can be inserted into the clamp clamping grooves 14.

In this embodiment, the distance between the left lead screw 105 and the right lead screw 109 is 250mm longer than the distance between the left lead screw and the right lead screw of the conventional insulator closed clip 1.

Claims (1)

1. The operation method for replacing the 500kV aerodynamic insulator is characterized by comprising the following steps of: the method comprises the following specific steps:

A. climbing a tower: before starting, the high-altitude operation personnel check the personal protection tool, after arriving at an operation point, make personal safety protection measures, then the high-altitude operation personnel climb to an operation position, and respectively install the second conductor at a conductor end and an iron tower end according to operation requirements;

B. the yoke plate on the installation left side, the yoke plate on the right side, go up fixture and last reinforcement fixture: selecting a conventional insulator above the damaged and to-be-replaced aerodynamic insulator, fixing a left trunnion and a right trunnion of an upper fixture on an elliptical hole of a left upper connecting plate and an elliptical hole of a right upper connecting plate respectively by using a check bolt and a nut, and fixing the left trunnion and the right trunnion of an upper reinforcing fixture on an inner circular hole of the left upper connecting plate and an inner circular hole of the right upper connecting plate respectively by using the check bolt and the nut, so that the left upper connecting plate and the right upper connecting plate are fixed together by the upper fixture and the upper reinforcing fixture, and the conventional insulator above the aerodynamic insulator is clamped between the parallel upper fixture and the upper reinforcing fixture;

C. install upper left connecting rod, left lead screw and left lower connecting rod: the outward end of the left upper connecting rod and the excircle hole of the left upper connecting plate are fixed together by using a check bolt and a nut, and the inward end of the left upper connecting rod and the inward end of the left lower connecting rod are connected together by using a left screw rod;

D. installing an upper right connecting rod, a right screw rod and a lower right connecting rod: the outward end of the upper right connecting rod and the excircle hole of the upper right connecting plate are fixed together by a check bolt and a nut, and the inward end of the upper right connecting rod and the inward end of the lower right connecting rod are connected together by a right screw rod;

E. installing a left lower yoke plate and a right lower yoke plate: fixing the outer round hole of the left lower yoke plate and the outward end of the left lower connecting rod together by using a check bolt and a nut, and fixing the outer round hole of the right lower yoke plate and the outward end of the right lower connecting rod together by using the check bolt and the nut;

F. installing a lower fixture and a lower reinforcing fixture: selecting a conventional insulator below the damaged and to-be-replaced aerodynamic insulator, fixing a left trunnion and a right trunnion of a lower fixture on an elliptical hole of a left lower connecting plate and an elliptical hole of a right lower connecting plate respectively by using a check bolt and a nut, and fixing the left trunnion and the right trunnion of a lower reinforcing fixture on an inner circular hole of the left lower connecting plate and an inner circular hole of the right lower connecting plate respectively by using the check bolt and the nut, so that the left lower connecting plate and the right lower connecting plate are fixed together by the lower fixture and the lower reinforcing fixture, and the conventional insulator below the aerodynamic insulator is clamped between the parallel lower fixture and the lower reinforcing fixture; thus, the left upper yoke plate, the right upper yoke plate, the upper fixture, the upper reinforcing fixture, the left upper connecting rod, the left screw rod, the left lower connecting rod, the right upper connecting rod, the right screw rod, the right lower connecting rod, the left lower yoke plate, the right lower yoke plate, the lower fixture and the lower reinforcing fixture are fixed into a whole to form a closed yoke plate device;

the closed clamping plate device comprises a conventional insulator closed clamp, an upper left connecting plate, a lower left connecting plate, an upper right connecting plate, a lower right connecting plate, an upper reinforcing clamp and a lower reinforcing clamp, wherein the conventional insulator closed clamp consists of an upper clamp, a lower clamp, an upper left connecting rod, a lower left connecting rod, an upper right connecting rod, a lower right connecting rod, a left screw rod, a right screw rod, a left screw rod crank and a right screw rod crank which can be connected into a closed whole through connection, the shapes of the upper clamp and the lower clamp are completely the same, the shapes of the upper left connecting rod, the lower left connecting rod, the upper right connecting rod and the lower right connecting rod are completely the same, a clamp round hole for allowing an upper fixing head in the middle of the top of the conventional insulator to pass through is arranged in the middle of the upper clamp and the lower clamp, the inward end of the upper left connecting rod and the inward end of the lower left connecting rod are connected together through the left screw rod crank fixed in the middle of the left screw rod, and the tightness between the upper left, the right screw rod connects the inward end of the upper right connecting rod with the inward end of the lower right connecting rod, and the tightness between the upper right connecting rod and the lower right connecting rod is screwed or loosened through the rotation of a right screw rod crank fixed in the middle of the right screw rod, the vertical shapes of the upper left connecting plate, the lower left connecting plate, the upper right connecting plate and the lower right connecting plate which are made of metal are completely the same, the vertical shapes of the upper left connecting plate, the lower left connecting plate, the upper right connecting plate and the lower right connecting plate are all pentagonal bodies formed by three right angles and two obtuse angles, the obtuse angles of the pentagonal bodies face outwards, an outer circular hole and an inner circular hole which have the same diameter are respectively arranged at the left right straight angles of the pentagonal bodies, a vertical elliptical hole is arranged at the third right angle of the pentagonal bodies, the outer circular hole and the inner circular hole are on the same horizontal line, and the elliptical hole and the inner circular hole are on the same vertical line; the shapes of the upper reinforcing fixture and the lower reinforcing fixture are completely the same as the shapes of the upper fixture and the lower fixture;

the anti-loosening bolt penetrates through the elliptical hole of the left upper connecting plate and then fixes the left trunnion of the upper fixture and the top of the left upper connecting plate together with the nut; the anti-loosening bolt penetrates through the elliptical hole of the right upper connecting plate and then fixes the right trunnion of the upper fixture and the top of the right upper connecting plate together with the nut; the anti-loosening bolt penetrates through the elliptical hole of the left lower connecting plate and then fixes the left trunnion of the lower fixture and the bottom of the left lower connecting plate together with the nut; the anti-loosening bolt penetrates through the elliptical hole of the right lower connecting plate and then fixes the right trunnion of the lower fixture and the bottom of the right lower connecting plate together with the nut; a conventional insulator is clamped above the damaged aerodynamic insulator, between the upper fixture and the upper reinforcing fixture, and a conventional insulator is clamped below the damaged aerodynamic insulator, between the lower fixture and the lower reinforcing fixture, and the damaged aerodynamic insulator is positioned between the upper reinforcing fixture and the lower reinforcing fixture;

the inward-facing side walls of the left upper connecting plate, the left lower connecting plate, the right upper connecting plate and the right lower connecting plate are respectively provided with a fixture clamping groove with an inward opening, and left trunnions or right trunnions of the upper fixture, the lower fixture, the upper reinforcing fixture and the lower reinforcing fixture can be inserted into the fixture clamping grooves;

G. tightening a closed clamping plate device: the left screw crank positioned in the middle of the left screw is shaken to screw the tension between the upper left connecting rod and the lower left connecting rod, the right screw crank positioned in the middle of the right screw is shaken to screw the tension between the upper right connecting rod and the lower right connecting rod, so that the weight of the closed clamping plate device is hung on a conventional insulator above the damaged aerodynamic insulator, the tension of a wire is completely transferred to the closed clamping plate device, and at the moment, the aerodynamic insulator to be replaced positioned between the upper reinforcing fixture and the lower reinforcing fixture is in an approximately suspended state;

H. replacing damaged aerodynamic insulation: checking whether the stress of the closed clamping plate device is normal, picking off the damaged aerodynamic insulator according to a conventional method after the normal stress is answered, and then loading a new aerodynamic insulator; confirming the complete falling position of the R pin of the new aerodynamic insulator, respectively shaking the left screw rod and the right screw rod, loosening the tension degree between the upper left connecting rod and the lower left connecting rod and the tension degree between the upper right connecting rod and the lower right connecting rod, and transferring the tension on the closed clamping plate device to the insulator string again;

I. dismantling the closed clamping plate device: in the dismantling process, parts on the closed type clamping plate device are dismantled in sequence according to the reverse sequence of the steps A-E and are placed on the ground one by one;

J. the following steps: and (4) removing the second protection of the lead by the aerial worker, cleaning the tower, lowering the operation tool to the ground, and taking the aerial worker off the tower after confirming that no object remains on the tower before taking off the tower.

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