CN112249950A - Hanging bracket and method for live replacement of any insulator of extra-high voltage strain insulator string - Google Patents
Hanging bracket and method for live replacement of any insulator of extra-high voltage strain insulator string Download PDFInfo
- Publication number
- CN112249950A CN112249950A CN202011223665.0A CN202011223665A CN112249950A CN 112249950 A CN112249950 A CN 112249950A CN 202011223665 A CN202011223665 A CN 202011223665A CN 112249950 A CN112249950 A CN 112249950A
- Authority
- CN
- China
- Prior art keywords
- insulator
- sealing plate
- supporting plate
- extra
- high voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000012211 strain insulator Substances 0.000 title claims description 11
- 238000007789 sealing Methods 0.000 claims abstract description 50
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 7
- 230000009194 climbing Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 230000007547 defect Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Cable Installation (AREA)
- Insulators (AREA)
Abstract
The invention discloses a hanging bracket and a method for replacing any insulator of an extra-high voltage tension string in a charged manner, wherein the hanging bracket comprises a main hanging rod, a connecting seat, an insulator elevator and a pulley assembly; the connecting seat comprises a pair of symmetrically arranged connecting heads, and the connecting seat is detachably connected outside the main suspender; the insulator elevator comprises a supporting plate, a sealing plate and a clamping box, wherein the supporting plate is hinged with one end of the sealing plate, the other end of the sealing plate is detachably connected through the clamping box, the supporting plate and the sealing plate are encircled to form an annular card for locking the insulator steel cap, and the supporting plate of the insulator elevator is hinged in the connecting head; the pulley assembly is mounted outside the main boom. Install two insulator elevator under same connecting seat in two adjacent strings of insulator front sides or the rear side that need change, encircle insulator nest seam through the closing plate, provide the stress point, provide hoisting point through loose pulley assembly. The operation process is simplified, the operation limit is reduced, the workload of live working personnel is reduced, the replacement efficiency is improved, and the operation safety is improved.
Description
Technical Field
The invention belongs to the technical field of operation and maintenance of an extra-high voltage transmission line, and particularly relates to a hanging bracket and a method for replacing any insulator of an extra-high voltage strain insulator string in a live manner.
Background
The ultra-high voltage transmission refers to the transmission technology of alternating current 1000kV or more and direct current plus-minus 800kV or more, and has very important significance for the national conditions of large-scale energy allocation and trans-regional power supply in China, especially for the areas with power energy shortage, such as the middle east province and the like. The extra-high voltage live working can be carried out to ensure that the defects can be eliminated in time when the line has defects or even faults, ensure the reliable operation of the extra-high voltage transmission line and provide a solid energy guarantee for the development of the economy and the society.
The method for replacing any insulator of the strain insulator string in a live-line mode is common live-line work of production line live-line work teams, but the ultra-high voltage transmission line has the characteristics of high field intensity and heavy load, the traditional method for replacing any insulator of the strain insulator string by vertically lifting cannot meet the requirement of safe operation of large operation load, and therefore the operation space of an operator who replaces the insulator is small, the operation limitation is large, and the labor intensity of the operator is increased.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the hanging bracket and the method for conveniently and efficiently replacing any insulator of the extra-high voltage strain insulator string in an electrified way.
The invention provides a hanger for replacing any insulator of an extra-high voltage tension string in a charged manner, which comprises a main hanger rod, a connecting seat, an insulator elevator and a pulley assembly, wherein the main hanger rod is fixedly connected with the connecting seat; the connecting seat comprises a pair of symmetrically arranged connecting heads, and the connecting seat is detachably connected outside the main suspender; the insulator elevator comprises a supporting plate, a sealing plate and a clamping box, wherein the supporting plate is hinged with one end of the sealing plate, the other end of the sealing plate is detachably connected through the clamping box, the supporting plate and the sealing plate are encircled to form an annular card for locking the insulator steel cap, and the supporting plate of the insulator elevator is hinged in the connecting head; the pulley assembly is mounted outside the main boom.
The main suspender is a bar-shaped rod, and the top surface of the main suspender is provided with at least three positioning holes.
The connecting seat is a herringbone integral seat and comprises a connecting sleeve and a pair of connecting heads, and the top surface of the connecting sleeve is provided with a mounting hole; the connector is sleeved outside the main suspension rod through a connecting sleeve and is locked through a fastener penetrating through the mounting hole and the positioning hole.
The connector is an ear seat, and connecting holes are formed in two ear plates of the ear seat and used for installing the insulator elevator.
The insulator elevator comprises a supporting plate, a sealing plate and a clamping box; the supporting plate is hinged with one end of the sealing plate, and the other end of the supporting plate is detachably connected through the card box; the supporting plate and the sealing plate are clamped to form an annular clamp for locking the insulator steel cap.
The supporting plate comprises a vertical section and an arc section, one side of the arc section is provided with a hinge hole, the other side of the arc section is provided with a mounting hole, the opening of the arc section faces downwards, and the top end of the arc section is connected with the vertical section; the top of the vertical section is provided with a shackle; the sealing plate is arc-shaped, one end of the sealing plate is provided with a hinge hole, and the other end of the sealing plate is externally provided with a plurality of ratchets.
The card box comprises an outer box, a pawl shaft and an up-down lifting type switch; the outer box is assembled at the end part of the arc section of the supporting plate, the pawl is arranged in the outer box, the inner end of the pawl is hinged with the inner wall of the outer box through a pawl shaft, and the upper and lower lifting type switches can slide along the radial direction of the annular card to compress the pawl; the card box also comprises a limiting seat, and the limiting seat is arranged in the outer box and is positioned at the end close to the sealing plate; the outer end of the pawl is provided with a limiting step platform.
A slideway is arranged in the outer box; the pawl is provided with a pressure groove in a back manner; the upper and lower pull-up switches comprise a pull rod, a pressure spring and a spiral cap, the pull rod is arranged in the slide way, the inner end of the pull rod is pressed into the pressure groove, the outer end of the pull rod extends out of the outer box and is connected with the spiral cap, and the pressure spring is sleeved outside the pull rod and is positioned between the pawl and the outer box.
The pulley assembly comprises a pulley seat and a pulley; the pulley seat is an integral part and comprises a positioning sleeve and a pair of lug plates, the top surface of the positioning sleeve is provided with a positioning hole, and the pair of lug plates are arranged at the bottom of the positioning sleeve; the pulley is arranged between the two ear plates through a wheel shaft; the pulley component is sleeved on the main suspension rod through a positioning sleeve and locked.
The invention also provides a method for replacing any insulator of the extra-high voltage strain insulator string in a live mode, the method uses the hanger as a tool, and the method comprises the following steps:
s.1, climbing a tower by a ground electrician, arranging a hanging point on the insulator rigid cap, and transmitting the hanging bracket to a live working person through an insulating pulley and an insulating transmission rope;
s.2, hot-line work personnel sleeve a pair of insulator elevators on the front sides or the rear sides of two adjacent strings of insulators to be replaced, and then control the supporting plates and the sealing plates to be locked, so that the insulator elevators can be attached to the insulators seamlessly;
s.3, after the insulator hanger is arranged, transferring a hanging point of the transfer rope to a pulley assembly on the main hanger rod, and sequentially transferring the closed clamp and the hydraulic screw rod to the live working personnel by ground personnel;
s.4, installing a closed clamp and a hydraulic screw rod on the insulator to be replaced by live working personnel;
s.5, operating the hydraulic screw rod to tighten the insulator string, so that the closed clamp is gradually stressed until the old insulator is loosened and can be separated;
s.6, taking out the spring pin on the insulator rigid cap, stably separating the insulator string through the hanger, transferring a new insulator to the position of an old insulator through ground personnel, and gradually loosening the hydraulic screw rod to enable the insulator string to be gradually stressed until the closed fixture is not stressed;
s.7, hot-line workers sequentially remove the closed fixture and the hydraulic screw rod and transmit the closed fixture and the hydraulic screw rod to the ground in a matching way;
s.8, live working personnel transfer the transfer rope from the pulley assembly to the insulator rigid cap to transfer the insulator elevator to the ground;
s.9, recovering the transmission rope, and taking personnel off the tower to complete the task of replacing any insulator of the strain insulator string in an electrified way.
When the device is put into use, live working personnel can install the closed clamp and the hydraulic screw rod on the insulator to be replaced; determining a hole position of a mounting hole at the far end of the connecting seat according to the distance between the two strings of insulators, sequentially installing insulator elevators under the connecting seat, installing the two insulator elevators under the same connecting seat on the front side or the rear side of the two adjacent strings of insulators to be replaced, surrounding a nest seam of the insulators through a sealing plate, and then operating a clamping box to tighten the sealing plate to ensure that the insulator elevators are attached to the insulators in a seamless manner; and then installing the lower insulator elevator of other connecting seats. After the installation is finished, operating the hydraulic lead screw to tighten up the insulator string to enable the closed type clamp to be stressed gradually until an old insulator is loosened and can be separated, taking out the spring pin on the rigid cap of the insulator, stably separating the insulator string through the hanger, and gradually loosening the hydraulic lead screw after the ground personnel transmit the replacement of a new insulator to enable the insulator string to be stressed gradually until the closed type clamp is not stressed; live working personnel demolish closed fixture and hydraulic pressure lead screw in proper order, transmit to ground through gallows and ground personnel cooperation, transmit the gallows to ground at last, and operating personnel goes down the tower, accomplishes electrified arbitrary insulator job task of changing. The whole operation process is simple and convenient, the operation limitation is small, the workload of live working personnel is reduced, the replacement efficiency is improved, and the operation safety is improved.
Drawings
Fig. 1 is a schematic view of a state of use of a preferred embodiment of the present invention.
Figure 2 is a side view of the preferred embodiment of the present invention showing the assembly of the connecting socket and the insulator elevator.
Fig. 3 is a schematic view of the state of use of the insulator elevator in the preferred embodiment.
Figure 4 is a schematic side view of the insulator elevator in the preferred embodiment.
Figure 5 is an enlarged schematic view of the cartridge in the preferred embodiment.
Sequence numbers of the drawings:
1-main boom;
2-a connecting seat, 21-a connecting sleeve, 22-a connecting head;
31-support plate, 311-vertical section, 312-circular arc section;
32-sealing plate, 321-ratchet;
33-cartridge, 331-cartridge, 332-pawl, 333-pawl shaft,
334-up and down lifting type switch, 3341-pull rod, 3342-pressure spring, 3343-screw cap,
335-a limiting seat;
4-pulley assembly, 41-pulley seat, 42-pulley.
Detailed Description
As shown in fig. 1 and fig. 2, the hanger for electrically replacing any insulator of an extra-high voltage tension string disclosed in this embodiment includes a main boom 1, a connecting seat 2, an insulator elevator 3, and a pulley assembly 4.
The main suspender 1 is a square bar made of high-strength glass fiber reinforced plastic, the top surface of the main suspender is provided with three positioning holes, two adjacent main suspenders are used for installing the connecting seat 2, and the other main suspenders are used for installing the pulley assembly 4.
The connecting base 2 is a herringbone integral base made of LC4 high-strength aluminum alloy and consists of a connecting sleeve 21 and a pair of connecting heads 22. The connecting sleeve 21 is a square sleeve matched with the main hanger rod, and the top surface of the connecting sleeve is provided with a mounting hole. The connecting head 22 is an ear seat formed by a pair of ear plates, and the pair of connecting heads are symmetrically and obliquely arranged below the connecting sleeve 21. During assembly, the connecting seat is sleeved outside the main suspension rod through the connecting sleeve, and the mounting hole in the connecting sleeve is aligned with the corresponding positioning hole and then locked through the corresponding fastener matched with the fishtail bolt. Each insulator elevator 3 is then mounted under a corresponding connector 22.
As shown in fig. 3 and 4, the insulator elevator 3 includes a support plate 31, a sealing plate 32, and a cartridge 33; the supporting plate is hinged with one end of the sealing plate, and the other end of the supporting plate is detachably connected with the sealing plate through a clamping box 33 to form a ring-shaped clamp for locking the insulator steel cap. The support plate 31 is an epoxy insulating plate; the sealing plate 32 is carbon structural steel.
The supporting plate 31 is of an inverted "Y" shape as a whole, and includes a vertical section 311 and a circular arc section 312. The top end of the vertical section is connected with a connecting hole, and the bottom end of the vertical section is connected with the arc section. The arc section 312 has a downward opening, and has a hinge hole at one side for hinge connection with the sealing plate 32 and a mounting hole at the other side for mounting the card box 33.
The sealing plate 32 is arc-shaped, one end of the sealing plate is provided with a hinge hole, and the other end of the sealing plate is externally provided with a plurality of ratchets 321; the sealing plate is hinged through a hinge shaft after the hinge hole on the sealing plate is aligned with the hinge hole on the supporting plate, so that the ratchet end can rotate around the hinge shaft, and the sealing plate can be clamped into the card box 33.
As shown in fig. 5, the cartridge 33 includes an outer case 331, a pawl 332, a pawl shaft 333, an up-and-down pull switch 334, and a stopper seat 335. The both ends of outer box 331 are equipped with the mounting hole, establish the slide in the outer box, and outer box is with its mounting hole and backup pad on the mounting hole just back riveting locking, establish articulated seat in the outer box, and pawl 332 articulates on articulated seat through pawl axle 333, and the pawl can rotate around the articulated shaft, and pawl 332 establishes the indent back in order to cooperate with upper and lower lift-draw formula switch 334, and the outer end of pawl is equipped with spacing ladder platform and is used for contacting spacingly with spacing seat 335 cooperation.
The up-down pull-up switch 334 comprises a pull rod 3341, a pressure spring 3342 and a screw cap 3343, the pull rod is arranged in the slide way, the inner end of the pull rod is pressed into the pressure groove, the outer end of the pull rod extends out of the outer box and is connected with the screw cap, and the pressure spring is sleeved outside the pull rod and is positioned between the pawl and the outer box.
For ease of identification, four sets of insulator elevators 3 are individually identified as A, B, C, D, with A, B connected under the same connector bay and C, D connected under another connector bay.
When the clamping box is used, the supporting plate and the sealing plate are wound on the insulator steel cap, the sealing plate is pushed to rotate around the hinge shaft until the end part of the sealing plate rotates into the clamping box to be locked, and the supporting plate and the sealing plate are clamped to form a ring-shaped clamp to be tightly attached to the insulator steel cap. The transfer point is provided, so that the subsequent unloading and replacing operation is convenient, and the sealing plate can be detached by pulling out from the card box after the replacement is finished. The operation is simple and convenient, the labor intensity of the operation is reduced, the operation efficiency is improved, and the probability of falling objects at high altitude and other safety accidents is favorably reduced.
The two positioning holes of the main suspension rod are provided with insulator elevators through the connecting seats, and the other positioning hole is used for assembling the pulley component 4.
The pulley assembly 4 comprises a pulley seat 41 and a pulley 42; the pulley seat is an integral part and comprises a positioning sleeve and a pair of lug plates, the top surface of the positioning sleeve is provided with a positioning hole, and the pair of lug plates are arranged at the bottom of the positioning sleeve; the pulley is arranged between the two ear plates through a wheel shaft; the pulley component is sleeved outside the main suspension rod through a positioning sleeve and locked.
When the hanger disclosed by the embodiment is used as a tool for operation, taking any tension insulator for replacing a +/-800 kV ultrahigh voltage tension insulator string as an example, the specific operation steps are as follows:
and step 1, the electrician on the bottom surface finishes the assembly of the hanger.
And 2, the ground electrician climbs the tower to set the hanging point on the insulator rigid cap, and transmits the hanging bracket to the live working personnel through the insulating pulley and the insulating transmission rope.
And 3, the live working personnel clamp A, B groups of elevators on the front sides or the rear sides of two adjacent strings of insulators to be replaced, surround the nest seam of the insulators through the sealing plate below, open the upper and lower lifting type switches in the clamping box to adjust the pawls to tighten the sealing plate, and ensure that the sealing plate is attached to the insulators without gaps.
And 4, the live-line worker buckles C, D groups of elevators on the rigid insulator caps, wherein the C group of support plates and the A group of support plates are positioned on the same string of insulators, and the D group of support plates and the B group of support plates are positioned on the same string of insulators.
And 5, after the hanging frame is arranged, transferring the hanging point of the transfer rope to the pulley assembly on the right side of the main hanging rod, and sequentially transferring the closed clamp and the hydraulic screw rod to the live-line workers by ground personnel.
Step 6, the live working personnel installs the closed clamp and the hydraulic screw rod on the insulator to be replaced
And 7, operating the hydraulic screw rod to tighten the insulator string, so that the closed clamp is gradually stressed until the old insulator is loosened and can be separated.
Step 8, taking out the spring pin on the insulator rigid cap, stably separating the insulator string through the hanger, transferring a new insulator to the position of the old insulator through ground personnel, gradually loosening the hydraulic screw rod to enable the insulator string to be gradually stressed until the closed fixture is not stressed
And 9, sequentially removing the closed fixture and the hydraulic screw rod by live working personnel, and matching the closed fixture and the hydraulic screw rod with ground personnel to be transmitted to the ground.
And step 10, transferring the transfer rope from the pulley assembly to the insulator rigid cap by the live working personnel, and transferring the insulator elevator to the ground.
And 11, recovering the transfer rope, and taking personnel off the tower to complete the task of replacing any insulator of the strain insulator string in an electrified manner.
Through the input of this embodiment, can ensure extra-high voltage live working personnel's safety, alleviate live working personnel's work load simultaneously, light high-efficient arbitrary piece insulator live replacement work task of completion strain insulator string has improved work efficiency.
Claims (10)
1. The utility model provides a gallows of arbitrary piece insulator of extra-high voltage strain insulator-string is changed with electricity which characterized in that: the device comprises a main suspender, a connecting seat, an insulator elevator and a pulley assembly;
the connecting seat comprises a pair of symmetrically arranged connecting heads, and the connecting seat is detachably connected outside the main suspender;
the insulator elevator comprises a supporting plate, a sealing plate and a clamping box, wherein the supporting plate is hinged with one end of the sealing plate, the other end of the sealing plate is detachably connected through the clamping box, the supporting plate and the sealing plate are encircled to form an annular card for locking the insulator steel cap, and the supporting plate of the insulator elevator is hinged in the connecting head;
the pulley assembly is mounted outside the main boom.
2. The hanger for live replacement of any insulator of extra-high voltage tension string as claimed in claim 1, wherein: the main suspender is a bar-shaped rod, and the top surface of the main suspender is provided with at least three positioning holes.
3. The hanging bracket for live replacement of any insulator of extra-high voltage tension string as claimed in claim 2, wherein: the connecting seat is a herringbone integral seat and comprises a connecting sleeve and a pair of connecting heads, and the top surface of the connecting sleeve is provided with a mounting hole; the connector is sleeved outside the main suspension rod through a connecting sleeve and is locked through a fastener penetrating through the mounting hole and the positioning hole.
4. The hanging bracket for live replacement of any insulator of extra-high voltage tension string as claimed in claim 3, wherein: the connector is an ear seat, and connecting holes are formed in two ear plates of the ear seat and used for installing the insulator elevator.
5. The hanging bracket for replacing any insulator of extra-high voltage tension string in an electrified way as claimed in claim 4, characterized in that: the insulator elevator comprises a supporting plate, a sealing plate and a clamping box; the supporting plate is hinged with one end of the sealing plate, and the other end of the supporting plate is detachably connected through the card box; the supporting plate and the sealing plate are clamped to form an annular clamp for locking the insulator steel cap.
6. The hanging bracket for live replacement of any insulator of extra-high voltage tension string as claimed in claim 5, wherein: the supporting plate comprises a vertical section and an arc section, one side of the arc section is provided with a hinge hole, the other side of the arc section is provided with a mounting hole, the opening of the arc section faces downwards, and the top end of the arc section is connected with the vertical section; the top of the vertical section is provided with a shackle; the sealing plate is arc-shaped, one end of the sealing plate is provided with a hinge hole, and the other end of the sealing plate is externally provided with a plurality of ratchets.
7. The hanging bracket for replacing any insulator of the extra-high voltage tension string in an electrified way as claimed in claim 7, characterized in that: the card box comprises an outer box, a pawl shaft and an up-down lifting type switch; the outer box is assembled at the end part of the arc section of the supporting plate, the pawl is arranged in the outer box, the inner end of the pawl is hinged with the inner wall of the outer box through a pawl shaft, and the upper and lower lifting type switches can slide along the radial direction of the annular card to compress the pawl; the card box also comprises a limiting seat, and the limiting seat is arranged in the outer box and is positioned at the end close to the sealing plate; the outer end of the pawl is provided with a limiting step platform.
8. The hanging bracket for replacing any insulator of the extra-high voltage tension string in an electrified way as claimed in claim 7, characterized in that: a slideway is arranged in the outer box; the pawl is provided with a pressure groove in a back manner; the upper and lower pull-up switches comprise a pull rod, a pressure spring and a spiral cap, the pull rod is arranged in the slide way, the inner end of the pull rod is pressed into the pressure groove, the outer end of the pull rod extends out of the outer box and is connected with the spiral cap, and the pressure spring is sleeved outside the pull rod and is positioned between the pawl and the outer box.
9. The hanging bracket for live replacement of any insulator of extra-high voltage tension string as claimed in claim 2, wherein: the pulley assembly comprises a pulley seat and a pulley; the pulley seat is an integral part and comprises a positioning sleeve and a pair of lug plates, the top surface of the positioning sleeve is provided with a positioning hole, and the pair of lug plates are arranged at the bottom of the positioning sleeve; the pulley is arranged between the two ear plates through a wheel shaft; the pulley component is sleeved on the main suspension rod through a positioning sleeve and locked.
10. A method for replacing any insulator of an extra-high voltage tension string in a charged manner, which is characterized in that the method uses the hanging bracket as claimed in any one of claims 1 to 9 as a tool, and comprises the following steps:
s.1, climbing a tower by a ground electrician, arranging a hanging point on the insulator rigid cap, and transmitting the hanging bracket to a live working person through an insulating pulley and an insulating transmission rope;
s.2, hot-line work personnel sleeve a pair of insulator elevators on the front sides or the rear sides of two adjacent strings of insulators to be replaced, and then control the supporting plates and the sealing plates to be locked, so that the insulator elevators can be attached to the insulators seamlessly;
s.3, after the insulator hanger is arranged, transferring a hanging point of the transfer rope to a pulley assembly on the main hanger rod, and sequentially transferring the closed clamp and the hydraulic screw rod to the live working personnel by ground personnel;
s.4, installing a closed clamp and a hydraulic screw rod on the insulator to be replaced by live working personnel;
s.5, operating the hydraulic screw rod to tighten the insulator string, so that the closed clamp is gradually stressed until the old insulator is loosened and can be separated;
s.6, taking out the spring pin on the insulator rigid cap, stably separating the insulator string through the hanger, transferring a new insulator to the position of an old insulator through ground personnel, and gradually loosening the hydraulic screw rod to enable the insulator string to be gradually stressed until the closed fixture is not stressed;
s.7, hot-line workers sequentially remove the closed fixture and the hydraulic screw rod and transmit the closed fixture and the hydraulic screw rod to the ground in a matching way;
s.8, live working personnel transfer the transfer rope from the pulley assembly to the insulator rigid cap to transfer the insulator elevator to the ground;
s.9, recovering the transmission rope, and taking personnel off the tower to complete the task of replacing any insulator of the strain insulator string in an electrified way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011223665.0A CN112249950A (en) | 2020-11-05 | 2020-11-05 | Hanging bracket and method for live replacement of any insulator of extra-high voltage strain insulator string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011223665.0A CN112249950A (en) | 2020-11-05 | 2020-11-05 | Hanging bracket and method for live replacement of any insulator of extra-high voltage strain insulator string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112249950A true CN112249950A (en) | 2021-01-22 |
Family
ID=74268234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011223665.0A Pending CN112249950A (en) | 2020-11-05 | 2020-11-05 | Hanging bracket and method for live replacement of any insulator of extra-high voltage strain insulator string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112249950A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114221255A (en) * | 2021-11-26 | 2022-03-22 | 国家电网有限公司 | +/-800 kV extra-high voltage direct current line live working squirrel-cage type tubular bus-bar wire-lifting clamp |
| CN117353198A (en) * | 2023-09-06 | 2024-01-05 | 国网湖北省电力有限公司超高压公司 | Tool and method for vertically rotating and replacing direct current grounding electrode line tension string |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06107398A (en) * | 1992-09-28 | 1994-04-19 | Kyushu Denki Kensetsu Koji Kk | Hoist type pulley |
| JPH08157189A (en) * | 1994-12-05 | 1996-06-18 | Shinko Tsushin Kensetsu Kk | Metallic wheel having braking function |
| CN104752996A (en) * | 2015-04-19 | 2015-07-01 | 国网青海省电力公司培训中心 | Method for live replacement of tension duplex whole-string insulators of 330kV power transmission line |
| CN105743013A (en) * | 2016-03-28 | 2016-07-06 | 中国南方电网有限责任公司超高压输电公司南宁局 | Method for live replacement of +/-500kV DC line strain tower insulator string |
| CN108869918A (en) * | 2018-06-21 | 2018-11-23 | 北京无线电测量研究所 | A kind of locking device of water pipe head |
| CN208337014U (en) * | 2017-11-27 | 2019-01-04 | 甘肃送变电工程有限公司 | A kind of charged for replacement Voltage for Insulators on HV Lines lifting block hanging point heightening device |
| CN110011221A (en) * | 2019-04-25 | 2019-07-12 | 国网河南省电力公司检修公司 | One kind ± 1100kV extra high voltage direct current transmission line strain insulator more changing device |
| CN110137852A (en) * | 2019-06-03 | 2019-08-16 | 国家电网有限公司 | A kind of UHV transmission line strain insulator monolithic replacement platform |
| CN209786629U (en) * | 2018-12-29 | 2019-12-13 | 广西电网有限责任公司钦州供电局 | Auxiliary device for replacing tension glass insulator of power transmission line |
-
2020
- 2020-11-05 CN CN202011223665.0A patent/CN112249950A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06107398A (en) * | 1992-09-28 | 1994-04-19 | Kyushu Denki Kensetsu Koji Kk | Hoist type pulley |
| JPH08157189A (en) * | 1994-12-05 | 1996-06-18 | Shinko Tsushin Kensetsu Kk | Metallic wheel having braking function |
| CN104752996A (en) * | 2015-04-19 | 2015-07-01 | 国网青海省电力公司培训中心 | Method for live replacement of tension duplex whole-string insulators of 330kV power transmission line |
| CN105743013A (en) * | 2016-03-28 | 2016-07-06 | 中国南方电网有限责任公司超高压输电公司南宁局 | Method for live replacement of +/-500kV DC line strain tower insulator string |
| CN208337014U (en) * | 2017-11-27 | 2019-01-04 | 甘肃送变电工程有限公司 | A kind of charged for replacement Voltage for Insulators on HV Lines lifting block hanging point heightening device |
| CN108869918A (en) * | 2018-06-21 | 2018-11-23 | 北京无线电测量研究所 | A kind of locking device of water pipe head |
| CN209786629U (en) * | 2018-12-29 | 2019-12-13 | 广西电网有限责任公司钦州供电局 | Auxiliary device for replacing tension glass insulator of power transmission line |
| CN110011221A (en) * | 2019-04-25 | 2019-07-12 | 国网河南省电力公司检修公司 | One kind ± 1100kV extra high voltage direct current transmission line strain insulator more changing device |
| CN110137852A (en) * | 2019-06-03 | 2019-08-16 | 国家电网有限公司 | A kind of UHV transmission line strain insulator monolithic replacement platform |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114221255A (en) * | 2021-11-26 | 2022-03-22 | 国家电网有限公司 | +/-800 kV extra-high voltage direct current line live working squirrel-cage type tubular bus-bar wire-lifting clamp |
| CN117353198A (en) * | 2023-09-06 | 2024-01-05 | 国网湖北省电力有限公司超高压公司 | Tool and method for vertically rotating and replacing direct current grounding electrode line tension string |
| CN117353198B (en) * | 2023-09-06 | 2024-04-26 | 国网湖北省电力有限公司超高压公司 | Tool and method for vertically rotating and replacing direct current grounding electrode line tension string |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112249950A (en) | Hanging bracket and method for live replacement of any insulator of extra-high voltage strain insulator string | |
| CN110137852B (en) | Single-piece replacement method for tension insulator of ultra-high voltage transmission line | |
| WO2012088987A1 (en) | Maintenance tool for insulator of direct current transmission line | |
| CN101546894B (en) | Method for replacing 220KV steel pipe tower composite insulator electrifiedly | |
| CN113809683A (en) | Method and system for replacing insulator string | |
| CN202978103U (en) | Insulator fixture | |
| CN213636878U (en) | Insulator elevator | |
| CN203367880U (en) | 760kN disk-shaped insulator holder | |
| CN202405695U (en) | Lifting tool for overhead ground wire of steel pipe pole | |
| CN102237654B (en) | Method for replacing jumper string using tool at double angle hanging point | |
| CN201946912U (en) | Universal clamp apparatus for cross arm of electric transmission line tangent tower | |
| CN202197048U (en) | Double angle steel hanging point lifting and connecting tool for tower use | |
| CN202978098U (en) | Overhead ground wire lifter | |
| CN105384097A (en) | Operation platform structure applied to high-voltage line operation | |
| CN103326264B (en) | Single-column vertical-telescopic-type outdoor high-voltage alternating replacing options | |
| CN109038365B (en) | Load hoisting system for live replacement of 500kV linear insulator string | |
| CN210692985U (en) | Grounding wire assembling and disassembling device | |
| CN113374399A (en) | Overhead maintenance equipment for cables for electric power overhaul | |
| CN212085663U (en) | Adjustable fixture suite for replacing tension insulator by helicopter suspension method | |
| CN105762702A (en) | Method for replacing L-shaped insulator string of +/-800kV direct current transmission line | |
| CN205662284U (en) | Two poles become platform ground jack | |
| CN212150435U (en) | High-strength belt carrier roller hanging device for underground excavation | |
| CN111162478A (en) | Suspension clamp gasket supplementing device | |
| CN113120790B (en) | Electrified dismouting robot of damper based on unmanned aerial vehicle assists line | |
| CN205985964U (en) | Broadsword fixture are changed to insulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210122 |