CN112467615B - Strain insulator string replacing device for transformer substation and replacing method - Google Patents
Strain insulator string replacing device for transformer substation and replacing method Download PDFInfo
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- CN112467615B CN112467615B CN202011353913.3A CN202011353913A CN112467615B CN 112467615 B CN112467615 B CN 112467615B CN 202011353913 A CN202011353913 A CN 202011353913A CN 112467615 B CN112467615 B CN 112467615B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
Abstract
The utility model belongs to the technical field of the electric power industry technique and specifically relates to a strain insulator string changes device for transformer substation is related to, it is including being used for the fixed subassembly fixed with the cross arm and can follow a fixed direction and carry out the bracing subassembly that stretches out and draws back, the bracing subassembly is fixed through locking Assembly after stretching out and drawing, fixed subassembly and bracing subassembly link to each other through rotating the seat, fixed subassembly with rotate a fixed connection, the bracing subassembly rotates with rotating the seat to be connected, and rotate the seat and be equipped with and be used for carrying out spacing subassembly to the rotation of bracing subassembly, the one end that the rotation seat was kept away from to the bracing subassembly is equipped with and is used for the auto-lock couple that links to each other with the power transmission line. This application has the effect of being convenient for maintain the in-process at transmission line and change strain insulator string.
Description
Technical Field
The application relates to the technical field of power industry, in particular to a strain insulator string replacing device and a strain insulator string replacing method for a transformer substation.
Background
The strain insulator string is an important element in the process of erecting the power transmission line and mainly comprises a ceramic strain insulator string and a composite strain insulator string. The strain insulator string can effectively isolate the electrified lead from the ground well, and each wire can keep the position of the strain insulator string.
In the operation process of the power transmission line, the insulator bears the influence of high voltage of current and change of natural environment for a long time, the insulating capability of the insulator is reduced, the insulator is aged and damaged, and the operation safety of the power transmission line is seriously threatened. Therefore, the strain insulator string is replaced in the later operation and maintenance process of the power transmission line, such as on power facility equipment of an electric tower, a transformer substation and the like.
Aiming at the related technologies, the inventor considers that the replacement process of the traditional strain insulator string is complex in operation and multiple in process, even if the strain insulator string is used on a power facility with lower height in a transformer substation, inconvenience and time and labor are wasted, and the replacement work efficiency is greatly reduced.
Disclosure of Invention
In order to facilitate replacement of the strain insulator string in the maintenance process of the power transmission line, the application provides a strain insulator string replacement device and a strain insulator string replacement method for a transformer substation.
First aspect, the application provides a strain insulator string changes device for transformer substation adopts following technical scheme:
the utility model provides a strain insulator string changes device for transformer substation, is including being used for carrying out the telescopic stay subassembly with the fixed subassembly of cross arm and can following a fixed direction, it is fixed to lock through locking Assembly after the stay subassembly is flexible, fixed subassembly links to each other through rotating the seat with the stay subassembly, fixed subassembly with rotate a seat fixed connection, the stay subassembly rotates with rotating the seat and is connected, and rotates the seat and be equipped with and be used for carrying out spacing subassembly to the rotation of stay subassembly, and the one end that the stay subassembly was kept away from and is rotated the seat is equipped with and is used for the auto-lock couple that links to each other with the power transmission line.
Through adopting above-mentioned technical scheme, fix fixed subassembly on the cross arm earlier, then carry out the regulation of bracing subassembly length according to strain insulator string's length, and it is fixed to lock the subassembly locking through locking Assembly, then order about the bracing subassembly and revolute and rotate the seat and take place to rotate, and make the bracing subassembly fix on rotating the seat through spacing subassembly, then go into the self-locking couple with the power transmission line card, pull down former strain insulator string this moment, change on new strain insulator string can, convenient and fast. Time and labor are saved.
Optionally, the bracing subassembly connects the frame including grafting complex interior guide post and overcoat, the outer cup joint frame includes two end plates that set up side by side and establishes many butt joints between two end plates, and many butt joints are arranged along the circumference equidistance of end plate, and many butt joints all with interior guide post looks butt.
Through adopting above-mentioned technical scheme, the butt pole is arranged around interior guide post to make the even atress of interior guide post, interior guide post is more steady when removing along interior guide post axis direction, and interior guide post is difficult for crooked in cup jointing the frame, in order to reach the messenger and draw the purpose that props the subassembly and take place to stretch out and draw back, draws and props the subassembly more firm, and the power transmission line keeps former tension state more easily.
Optionally, the locking assembly comprises a plurality of thread columns fixed at one end of the inner guide column far away from the rotating seat and a locking seat in threaded connection with the thread columns and in butt connection with the butt rods, the axial lines of the thread columns are perpendicular to the axial lines of the inner guide columns, the thread columns are located between the two adjacent butt rods, and the locking seat corresponds to the thread columns one to one.
Through adopting above-mentioned technical scheme, the guide post locking in will is followed to the circumference of interior guide post to the locking seat, and the clamp force that interior guide post received keeps balance, further makes interior guide post cup joint outside and is difficult for taking place crooked in putting up to the multiple spot centre gripping, the fixed effect of locking is good, and the interior guide post is difficult for taking place the drunkenness along the axial of interior guide post.
Optionally, the locking seat includes the toper portion with butt pole looks butt and establishes the portion of twisting that keeps away from interior guide post one end at the toper portion, the main aspects of toper portion are the one end of keeping away from interior guide post, the tip of toper portion is the one end that is close to interior guide post.
Through adopting above-mentioned technical scheme, the fixed effect of locking seat has further been strengthened to toper portion to make the bracing subassembly keep the flexible state after adjusting more easily, twist the rotation that the portion was convenient for locking the seat of moving.
Optionally, fixed subassembly includes the fixing base and is used for the fixing base and the continuous regulation seat of cross arm, the fixing base includes two cell cube that set up side by side and mutual symmetry, the cell cube is including establishing vertical section, the vertical section of keeping away from ground one end at the regulation seat and keeping away from the tip of adjusting seat one end and extending the slope section that forms along the direction slope that is close to two horizontal segment symmetry axes along the horizontal segment that is close to the horizontal segment that forms of rotating seat orientation horizontal extension formation, the tip that vertical section one end was kept away from to the horizontal segment, links to each other through rotating the seat between two slope sections.
Through adopting above-mentioned technical scheme, constructor can put the bracing subassembly in the top of strain insulator string to make the fixed of changing the device and strain insulator string mutually noninterfere, and when changing the length of in-process regulation bracing subassembly and the angle between bracing subassembly and the cross arm, can support the bracing and put on strain insulator string, in order to reach more laborsaving purpose.
Optionally, adjust the seat including the regulating plate, be located regulating plate length direction both ends and along the regulating plate length direction with the regulating plate slide the tight seat of clamp of being connected and stride establish the screw joint spare between two tight seats of clamp, press from both sides tight seat and be equipped with the spout that supplies the screw joint spare to slide along vertical direction.
Through adopting above-mentioned technical scheme for it is more firm on the cross arm to change the device, is difficult for rocking, thereby is convenient for keep the tension state of power transmission line.
Optionally, a support arm is arranged between the horizontal sections in a spanning manner, a traction rope is arranged at one end of the support arm close to the adjusting seat, and an auxiliary hook is arranged at one end of the traction rope far away from the support arm.
Through adopting above-mentioned technical scheme, when dismantling former strain insulator string, can pull down the one end that former strain insulator string and cross arm are connected earlier to in going into supplementary couple with the gold utensil card that former strain insulator string is close to cross arm one end, carry out the dismantlement that former strain insulator string is close to power transmission line one end again, need not to hold former strain insulator string by hand always in the dismantlement process, still can independently accomplish the construction by a constructor this moment.
Optionally, the limiting assembly comprises a rotating shaft penetrating through the rotating seat and the inner guide column and a clamping nut which is in threaded connection with two ends of the rotating shaft and is used for fixing the inner guide column on the rotating seat.
Through adopting above-mentioned technical scheme, when adjusting the angle between bracing subassembly and the cross arm, loosen clamping nut, order about the bracing subassembly and revolute and rotate the seat and take place to rotate, then tighten clamping nut again, make clamping nut and interior guide post looks butt can realize that the bracing subassembly is fixed on rotating the seat, convenient and fast.
In a second aspect, the application provides a method for replacing a strain insulator string for a transformer substation, which adopts the following technical scheme:
a method for replacing a strain insulator string for a transformer substation is characterized by comprising the following steps:
s1, before replacing a strain insulator string for a transformer substation, a constructor cuts off the power transmission line, grounds the power transmission line and checks whether the power transmission line is cut off;
s2, placing the strain insulator string replacing device for the transformer substation as claimed in any one of claims 1 to 8 above the strain insulator string, fixing one end of the strain insulator string replacing device for the transformer substation on a cross arm, and connecting the other end of the strain insulator string replacing device for the transformer substation with a transmission line;
s3, taking down the original strain insulator string, and fixing two ends of a new strain insulator string on the cross arm and the power transmission line respectively;
and S4, separating two ends of the strain insulator string replacing device from the cross arm and the power transmission line to complete replacement of the strain insulator string.
By adopting the technical scheme, the strain insulator string replacing device enables the replacement process of the strain insulator string to be simple, convenient and quick to operate; the original tension state of the transmission line is not influenced before and after the tension insulator string is replaced; the strain insulator string replacing device can also be adapted to strain insulator strings with different lengths.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the tension insulator string replacing device is arranged between the cross arm and the power transmission line in a bracing mode, so that the power transmission line is kept in an original tension state, the original tension insulator string is disassembled, and a new tension insulator string is replaced, and the replacing process is simple in operation, convenient and fast;
2. the locking seat locks the inner guide post along the circumferential direction of the inner guide post, the clamping force applied to the inner guide post keeps balanced, the inner guide post is further difficult to skew in the outer sleeve frame, and the locking is good in fixing effect due to multipoint clamping, and the inner guide post is difficult to shift along the axial direction of the inner guide post.
Drawings
FIG. 1 is a schematic structural diagram of the whole tension insulator string replacing device according to the embodiment of the present application;
fig. 2 is a schematic view of an embodiment of the present application secured between a cross arm and a power line;
FIG. 3 is a schematic structural view of a rotating base and a bracing assembly in an embodiment of the present application;
FIG. 4 is a cross-sectional view of a bracing assembly in an embodiment of the present application;
fig. 5 is a schematic structural diagram of a fixing assembly in an embodiment of the present application.
Description of reference numerals: 1. a fixing assembly; 11. a fixed seat; 111. a vertical section; 112. a horizontal segment; 113. an inclined section; 114. a support arm; 115. a hauling rope; 116. an auxiliary hook; 12. an adjusting seat; 121. an adjusting plate; 1211. a dovetail groove; 122. a clamping seat; 1221. a chute; 123. a screw member; 1231. a screw; 1232. abutting against the nut; 2. a bracing assembly; 21. an inner guide post; 22. an outer sleeve connection frame; 221. an end plate; 222. a butting rod; 3. a locking assembly; 31. a threaded post; 32. a locking seat; 321. a tapered portion; 322. a screwing part; 4. a rotating seat; 41. a hinge portion; 5. a limiting component; 51. a rotating shaft; 52. clamping the nut; 6. a self-locking hook; 61. a hook body; 62. an elastic buckle; 7. a cross arm; 8. a power transmission line; 9. and (4) strain insulator strings.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses strain insulator string replacement device for transformer substation. Referring to fig. 1, the tension insulator string replacing device comprises a fixing component 1 and a bracing component 2.
Referring to fig. 1 and 2, the fixing assembly 1 is used for fixing the strain insulator string replacing device on the cross arm 7, and the tension support assembly 2 is used for tensioning the power transmission line 8, so that the power transmission line 8 is kept in an original tension state. The strain insulator string 9 for the transformer substation has different lengths according to actual needs of an actual power transmission line, so the tension support assembly 2 can stretch along a fixed direction, the tension support assembly 2 can be suitable for replacement of the strain insulator string 9 with different lengths, and the tension support assembly 2 is locked and fixed through the locking assembly 3 after stretching.
The bracing component 2 is connected with the fixing component 1 through the rotating seat 4. The angle between strain insulator string 9 and cross arm 7 is different according to strain insulator string 9 to the bracing intensity of power transmission line 8, consequently fixed subassembly 1 with rotate 4 fixed connection of seat, the bracing subassembly 2 with rotate 4 articulated seats, and rotate the one end that seat 4 is located bracing subassembly 2 along the flexible direction of bracing subassembly 2. When the angle between the bracing component 2 and the cross arm 7 is not matched with the angle between the strain insulator string 9 and the cross arm 7, the bracing component 2 can be rotated around the rotating seat 4, and the angle between the bracing component 2 and the cross arm 7 can be adjusted.
Referring to fig. 1 and 3, a limiting component 5 for limiting the rotation of the bracing component 2 is arranged on the rotating seat 4, and after the angle between the bracing component 2 and the cross arm 7 is adjusted, the bracing component 2 is fixed through the limiting component 5. One end of the bracing component 2, which is far away from the rotating seat 4, is connected with the power transmission line 8, and the bracing component 2 is provided with a self-locking hook 6 for fixing the bracing component 2 on the power transmission line 8. Auto-lock couple 6 detains 62 including couple body 61 and the elasticity that is located couple body 61 one end, and elasticity is detained 62 and can be followed the direction that is close to couple body 61 inside and rotate to put into the inside of couple body 61 with power transmission line 8, the back is put into to power transmission line 8, and elasticity is detained 62 and is reset and form the auto-lock, makes power transmission line 8 be difficult for breaking away from on the couple body 61.
When changing strain insulator string 9, fix fixed subassembly 1 on cross arm 7 earlier, then carry out the regulation of bracing subassembly 2 length according to strain insulator string 9's length, and it is fixed with bracing subassembly 2 locking through locking Assembly 3, then order about bracing subassembly 2 and revolute and rotate seat 4 and take place to rotate, so that angle between bracing subassembly 2 and the cross arm 7 and the angle looks adaptation between strain insulator string 9 and the cross arm 7, and make bracing subassembly 2 fix on rotating seat 4 through spacing subassembly 5, then go into in 8 card of power transmission line go into self-locking hook 6, thereby reach the purpose that keeps former tensioning state of power transmission line 8, pull down former strain insulator string 9 this moment, it can to change new strain insulator string 9, convenient and fast. Time and labor are saved.
The bracing assembly 2 comprises an inner guide post 21 and an outer attachment bracket 22. Interior guide post 21 and overcoat connect frame 22 to peg graft the cooperation, interior guide post 21 adopts the aluminum alloy material to make to reduce the holistic weight of change device, be convenient for change device's transport. The inner guide post 21 is cylindrical, and the outer sleeve frame 22 includes two end plates 221 and a plurality of abutting rods 222. The two end plates 221 are circular, the two end plates 221 are made of hard plastic and other insulating materials, the two end plates 221 are arranged side by side, a through hole for the inner guide column 21 to penetrate through is formed in the end plate 221 close to one end of the rotating seat 4, and the self-locking hook 6 is hinged to the end plate 221 far away from one end of the rotating seat 4; the plurality of abutting rods 222 are welded and fixed between the two end plates 221, the plurality of abutting rods 222 are arranged at equal intervals along the circumferential direction of the end plates 221, the plurality of abutting rods 222 are abutted against the inner guide column 21, and the abutting rods 222 are made of aluminum alloy materials. The number of the abutting rods 222 can be selected according to the requirement of the bracing strength, and eight are taken as examples in this embodiment.
The pole 222 that connects encircles interior guide post 21 arranges to make the even atress of interior guide post 21, interior guide post 21 is more steady when moving along interior guide post 21 axis direction, and interior guide post 21 is difficult for skewly in cup jointing the frame, in order to reach the purpose that makes the bracing subassembly 2 take place to stretch out and draw back, the bracing subassembly 2 is more firm, and the power transmission line 8 keeps former tensioning state more easily.
Referring to fig. 3 and 4, the locking assembly 3 includes a plurality of threaded columns 31 and locking seats 32 corresponding to the threaded columns 31 one to one. The plurality of threaded columns 31 are welded and fixed at one end of the inner guide column 21 far away from the rotating seat 4, the axial lead of the threaded column 31 is perpendicular to the axial lead of the inner guide column 21, and the threaded column 31 is located between the two abutting rods 222 ringing the bell, so eight threaded columns 31 are arranged at equal intervals along the circumferential direction of the inner guide column 21. The locking seat 32 is connected to the threaded post 31, and when the locking seat 32 is locked and fixed, the abutting rod 222 abuts against the locking seat 32. After the inner guiding column 21 is moved to a suitable position on the outer sleeve frame 22, the locking seat 32 is screwed into the threaded column 31, so that the locking seat 32 abuts against the abutting rod 222 to lock and fix the inner guiding column 21 on the outer sleeve frame 22, so that the bracing assembly 2 is kept in the existing telescopic state.
When the locking device is fixed, the eight locking seats 32 need to be screwed in sequence by a diagonal method. The locking seat 32 locks the inner guide post 21 along the circumferential direction of the inner guide post 21, the clamping force applied to the inner guide post 21 keeps balance, the inner guide post 21 is further enabled to be difficult to skew in the outer sleeve frame 22, and the locking is good in fixing effect due to multipoint clamping, and the inner guide post 21 is difficult to shift along the axial direction of the inner guide post 21.
The locking socket 32 includes a tapered portion 321 and a driving portion 322. The tapered portion 321 and the driving portion 322 are made of cast iron, so that the tapered portion 321 and the driving portion 322 have high strength and high hardness, and the tapered portion 321 and the driving portion 322 are of an integral structure. The tapered portion 321 abuts against the abutting rods 222, a large end of the tapered portion 321 is an end far away from the inner guide post 21, and a small end of the tapered portion 321 is an end close to the inner guide post 21, so that the small end of the tapered portion 321 is embedded between outer walls of two adjacent abutting rods 222, and a contact effect between the tapered portion 321 and the abutting rods 222 is better. The screwing part 322 is located at one end of the tapered part 321 far away from the inner guide post 21, and the screwing part 322 is used for screwing the locking seat 32, so that the screwing part 322 can be arranged into a table body with the section matched with the shape of the nut.
When the inner guide column 21 is locked and fastened by the locking seat 32, the locking seat 32 is firstly pre-tightened on the threaded column 31, then the clamping part of an auxiliary tool such as a wrench is clamped into the screwing part 322, and the conical part 321 is driven to abut against the abutting rod 222 by rotating the screwing part 322. The tapered portion 321 further enhances the locking and fixing effect of the locking seat 32, so that the bracing assembly 2 can more easily maintain the adjusted telescopic state.
Referring to fig. 1 and 5, the fixing assembly 1 includes a fixing base 11 and an adjusting base 12. The fixing base 11 is used for erecting the tension support assembly 2 above the tension insulator string 9, so that the replacement device is fixed and the tension insulator string 9 does not interfere with each other, and when the length of the tension support assembly 2 and the angle between the tension support assembly 2 and the cross arm 7 are adjusted in the replacement process, the tension support can be placed on the tension insulator string 9, so that the purpose of saving labor is achieved, and at the moment, a constructor can independently complete replacement construction. The adjusting seat 12 is used for connecting the fixed seat 11 with the cross arm 7, so that the replacing device is more stable on the cross arm 7 and is not easy to shake, and the tension state of the power transmission line 8 is convenient to maintain.
The holder 11 includes two unit bodies. The two unit bodies are arranged side by side and are symmetrical to each other, and each unit body comprises a vertical section 111, a horizontal section 112 and an inclined section 113. The vertical section 111 is arranged at one end of the adjusting seat 12 far away from the ground, the horizontal section 112 is formed by horizontally extending the end part of the vertical section 111 far away from one end of the adjusting seat 12 along the direction close to the pulling and supporting seat, and the inclined section 113 is formed by obliquely extending the end part of the horizontal section 112 far away from one end of the vertical section 111 along the direction close to the symmetrical axes of the two horizontal sections 112. All welded fastening between vertical section 111, horizontal segment 112 and the hang plate, and the equal welded fastening of one end of two slope sections 113 keeping away from horizontal segment 112 is on rotating seat 4.
The adjusting seat 12 includes an adjusting plate 121, a clamping seat 122, and a screw 123. The adjusting plate 121 is rectangular, and the adjusting plate 121 is used for welding and fixing the vertical section 111. The clamping seats 122 are located at two ends of the adjusting plate 121 in the length direction, and the clamping seats 122 are connected with the adjusting plate 121 in a sliding manner along the length direction of the adjusting plate 121. One end of the clamping seat 122 close to the adjusting plate 121 is provided with a dovetail head, and the adjusting plate 121 is provided with a dovetail groove 1211 matched with the dovetail head. The screw 123 includes a screw 1231 and an abutting nut 1232 in threaded connection with two ends of the screw 1231, the screw 123 spans between the two clamping bases 122, and the screw 123 is provided with two sets, and the two sets of screws 123 are respectively located at two ends of the clamping bases 122 along the width direction of the adjustment plate 121. The clamping seat 122 is provided with a sliding groove 1221 for the screw 123 to slide along the vertical direction, and the sliding groove 1221 is waist-shaped with width matched with the screw 1231.
When the adjusting seat 12 is fixed to the cross arm 7, the adjusting plate 121 is placed at the top end of the adjusting plate 121, the two clamping seats 122 are located on two sides of the cross arm 7 respectively, then the clamping seats 122 are driven to slide on the adjusting plate 121, the clamping seats 122 are driven to abut against the cross arm 7, the screw 1231 is driven to slide in the sliding groove 1221, the screw 1231 is driven to abut against the cross arm 7, the abutting nut 1232 is screwed into two ends of the screw 1231, the abutting nut 1232 is driven to abut against the abutting seats, and therefore the adjusting seat 12 is fixed to the cross arm 7.
A support arm 114 is spanned between the two horizontal sections 112, and the support arm 114 and the horizontal sections 112 are welded and fixed. One end of the supporting arm 114 close to the adjusting base 12 is fixed with a pulling rope 115, and the pulling rope 115 adopts a sling chain, so that the pulling rope 115 has stronger bearing capacity. An auxiliary hook 116 is arranged at one end of the traction rope 115 far away from the support arm 114, and the structure of the auxiliary hook 116 is the same as that of the self-locking hook 6. When dismantling former strain insulator string 9, can pull down the one end that former strain insulator string 9 and cross arm 7 are connected earlier to in going into supplementary couple 116 with the gold utensil card that former strain insulator string 9 is close to cross arm 7 one end, carry out the dismantlement that former strain insulator string 9 is close to power transmission line 8 one end again, need not to hold the former strain insulator string 9 of hand always in the dismantlement process, still can accomplish the construction independently by a constructor this moment.
Referring to fig. 1 and 3, a hinge portion 41 is welded and fixed at one end of the rotating base 4 close to the bracing assembly 2, and an open slot for embedding the hinge portion 41 is formed at one end of the inner guide post 21 close to the rotating base 4. The spacing assembly 5 comprises a rotating shaft 51 and a clamping nut 52. The rotating shaft 51 is inserted into the hinge portion 41 of the inner guide post 21 and the rotating base 4, and the clamp nut 52 is screwed to both ends of the rotating shaft 51. When the angle between the bracing component 2 and the cross arm 7 needs to be adjusted, the clamping nut 52 is loosened to drive the bracing component 2 to rotate around the rotating seat 4, then the clamping nut 52 is screwed, so that the clamping nut 52 is abutted to the inner guide post 21 to fix the bracing component 2 on the rotating seat 4, and the operation is convenient and fast.
The implementation principle of the strain insulator string replacement device for the transformer substation is as follows: when changing strain insulator string 9, place the device earlier and place the top with strain insulator string 9, then with regulating plate 121 and cross arm 7's top looks butt to make the butt seat in cross arm 7's both sides, then order about the butt seat and slide at regulating plate 121, make butt plate and cross arm 7 looks butt, then order about screw 1231 and slide in spout 1221, make screw 1231 and cross arm 7 looks butt, and twist screw 1231 and butt seat looks butt with butt nut 1232.
Then the bracing component 2 is driven to rotate around the rotating seat 4, so that the angle between the bracing component 2 and the cross arm 7 is matched with the angle between the strain insulator string 9 and the cross arm 7, and then the clamping nut 52 is abutted to the inner guide post 21. Then the length of the tension assembly 2 is adjusted according to the length of the strain insulator string 9: order to order about interior guide post 21 and slide in outer cup jointing frame 22 to make self-locking couple 6 form the bracing effect to power transmission line 8, then go into self-locking couple 6 with power transmission line 8 card in, then rotate through the spanner and twist portion 322, order about toper portion 321 and butt joint pole 222 looks butt, fix interior guide post 21 on outer cup jointing frame 22, so that bracing subassembly 2 keeps the flexible state after the regulation. Then the end of the strain insulator string 9 close to the cross arm 7 is disassembled, the hardware fitting at the end part is clamped into the auxiliary hook 116, then the end of the strain insulator string 9 close to the power transmission line 8 is disassembled, and then a new strain insulator string 9 is installed between the cross arm 7 and the power transmission line 8 to complete replacement.
The embodiment of the application also discloses a method for replacing the strain insulator string for the transformer substation. A method for replacing a strain insulator string for a transformer substation comprises the following steps:
s1, before replacing a strain insulator string 9 for a transformer substation, a constructor firstly cuts off the power of a power transmission line needing to replace the strain insulator string 9, then grounds the power transmission line, detects whether the power transmission line is cut off through an electricity testing device, and confirms that the device has no current;
s2, conveying constructors, a strain insulator string replacing device and a new strain insulator string 9 to a designated position through platform lifting devices such as a lifter, wherein the constructors firstly place the strain insulator string replacing device above the original strain insulator string 9, fix an adjusting seat 12 on a cross arm 7, adjust the angle between a tension support assembly 2 and the cross arm 7 and the length of the tension support assembly 2, and then clamp a power transmission line 8 into a self-locking hook 6;
s3, firstly, disassembling one end of the original strain insulator string 9 close to the cross arm 7, clamping a hardware fitting of the original strain insulator string 9 close to one end of the cross arm 7 into the auxiliary hook 116, then disassembling one end of the original strain insulator close to the power transmission line 8, then stably placing the original strain insulator string 9 on a lifting platform, and then fixing two ends of a new strain insulator string 9 on the cross arm 7 and the power transmission line 8 in decibels;
s4, the two ends of the strain insulator string replacing device are separated from the cross arm 7 and the power transmission line 8, then the lifting platform is driven to descend to the ground, the original strain insulator string 9 is recovered, the strain insulator string replacing device is maintained and stored, and replacement of the strain insulator string 9 can be completed.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a strain insulator string changes device for transformer substation which characterized in that: the device comprises a fixing component (1) used for being fixed with a cross arm (7) and a bracing component (2) capable of stretching along a fixed direction, wherein the bracing component (2) is locked and fixed through a locking component (3) after stretching, the fixing component (1) and the bracing component (2) are connected through a rotating seat (4), the fixing component (1) is fixedly connected with the rotating seat (4), the bracing component (2) is rotatably connected with the rotating seat (4), the rotating seat (4) is provided with a limiting component (5) used for limiting the rotation of the bracing component (2), and one end, far away from the rotating seat (4), of the bracing component (2) is provided with a self-locking hook (6) used for being connected with a power transmission line (8); draw and prop subassembly (2) and connect frame (22) including grafting complex interior guide post (21) and overcoat, outer cup joint frame (22) include two end plate (221) that set up side by side and establish many butt joint pole (222) between two end plate (221), and many butt joint poles (222) are arranged along the circumference of end plate (221) equidistant, and many butt joint poles (222) all with interior guide post (21) looks butt.
2. The strain insulator string replacing device for the substation of claim 1, wherein: locking Assembly (3) including many fixes at guide post (21) keep away from screw thread post (31) of rotating seat (4) one end and with screw thread post (31) threaded connection and with butt lock seat (32) of pole (222) looks butt joint, the axial lead of guide post (21) in the axial lead homogeneous perpendicular to of screw thread post (31), and screw thread post (31) are located between two adjacent butt joint poles (222), lock seat (32) and screw thread post (31) one-to-one.
3. The strain insulator string replacing device for the substation of claim 2, wherein: the locking seat (32) comprises a conical part (321) abutted to the abutting rod (222) and a screwing part (322) arranged at one end, far away from the inner guide column (21), of the conical part (321), the large end of the conical part (321) is one end far away from the inner guide column (21), and the small end of the conical part (321) is one end close to the inner guide column (21).
4. The strain insulator string replacing device for the substation of claim 1, wherein: fixed subassembly (1) includes fixing base (11) and is used for adjusting seat (12) that fixing base (11) and cross arm (7) link to each other, fixing base (11) include two side by side setting and the cell cube of mutual symmetry, the cell cube is including establishing vertical section (111), vertical section (111) of adjusting seat (12) one end and keeping away from the tip of adjusting seat (12) one end and extending horizontal segment (112) that form along being close to rotation seat (4) orientation level, tip that vertical section (111) one end was kept away from in horizontal segment (112) extend slope section (113) that form along the orientation slope that is close to two horizontal segment (112) symmetry axis between two slope sections (113), link to each other through rotating seat (4).
5. The strain insulator string replacing device for the substation of claim 4, wherein: adjust seat (12) including regulating plate (121), be located regulating plate (121) length direction both ends and along regulating plate (121) length direction with regulating plate (121) slide the tight seat (122) of clamp of being connected and stride establish screw connector (123) between two tight seats (122), press from both sides tight seat (122) and be equipped with spout (1221) that supply screw connector (123) to slide along vertical direction.
6. The strain insulator string replacing device for the substation of claim 4, wherein: a supporting arm (114) is arranged between the horizontal sections (112) in a spanning mode, a traction rope (115) is arranged at one end, close to the adjusting seat (12), of the supporting arm (114), and an auxiliary hook (116) is arranged at one end, far away from the supporting arm (114), of the traction rope (115).
7. The strain insulator string replacing device for the substation of claim 1, wherein: the limiting assembly (5) comprises a rotating shaft (51) arranged on the rotating seat (4) and the inner guide column (21) in a penetrating mode and a clamping nut (52) which is in threaded connection with the two ends of the rotating shaft (51) and used for fixing the inner guide column (21) on the rotating seat (4).
8. A method for replacing a strain insulator string for a transformer substation is characterized by comprising the following steps:
s1, before replacing a strain insulator string (9) for a transformer substation, a constructor cuts off the power transmission line, grounds the power transmission line and checks whether the power transmission line is cut off;
s2, placing the strain insulator string replacing device for the transformer substation as claimed in any one of claims 1-7 above the strain insulator string (9), fixing one end of the strain insulator string replacing device for the transformer substation on the cross arm (7), and connecting the other end of the strain insulator string replacing device for the transformer substation with the power transmission line (8);
s3, taking down the original strain insulator string (9), and fixing two ends of a new strain insulator string (9) on the cross arm (7) and the power transmission line (8) respectively;
and S4, separating two ends of the strain insulator string replacing device from the cross arm (7) and the power transmission line (8) to complete replacement of the strain insulator string (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011353913.3A CN112467615B (en) | 2020-11-27 | 2020-11-27 | Strain insulator string replacing device for transformer substation and replacing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011353913.3A CN112467615B (en) | 2020-11-27 | 2020-11-27 | Strain insulator string replacing device for transformer substation and replacing method |
Publications (2)
| Publication Number | Publication Date |
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| CN112467615A CN112467615A (en) | 2021-03-09 |
| CN112467615B true CN112467615B (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011353913.3A Active CN112467615B (en) | 2020-11-27 | 2020-11-27 | Strain insulator string replacing device for transformer substation and replacing method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000059936A (en) * | 1998-08-10 | 2000-02-25 | Chubu Electric Power Co Inc | Insulator replacing device for two-string strain- insulator apparatus |
| CN202206070U (en) * | 2011-09-19 | 2012-04-25 | 湖南省电力公司长沙电业局 | Aerodynamic insulator replacing tool for steel tower side phase cross arms |
| CN210053173U (en) * | 2019-07-12 | 2020-02-11 | 国网青海省电力公司海东供电公司 | Secondary protection device for tension-resistant current-inducing string of power transmission line |
| CN111162483A (en) * | 2020-02-12 | 2020-05-15 | 广东电网有限责任公司电力科学研究院 | Stress application replacing device for lead screw of insulator of angle steel cross arm |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410661A (en) * | 2016-08-09 | 2017-02-15 | 国网上海市电力公司 | Whole string tension insulator exchange device of ultra-high voltage transmission line |
-
2020
- 2020-11-27 CN CN202011353913.3A patent/CN112467615B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000059936A (en) * | 1998-08-10 | 2000-02-25 | Chubu Electric Power Co Inc | Insulator replacing device for two-string strain- insulator apparatus |
| CN202206070U (en) * | 2011-09-19 | 2012-04-25 | 湖南省电力公司长沙电业局 | Aerodynamic insulator replacing tool for steel tower side phase cross arms |
| CN210053173U (en) * | 2019-07-12 | 2020-02-11 | 国网青海省电力公司海东供电公司 | Secondary protection device for tension-resistant current-inducing string of power transmission line |
| CN111162483A (en) * | 2020-02-12 | 2020-05-15 | 广东电网有限责任公司电力科学研究院 | Stress application replacing device for lead screw of insulator of angle steel cross arm |
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| Publication number | Publication date |
|---|---|
| CN112467615A (en) | 2021-03-09 |
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