CN108462101B - Six-connection three-hanging-point tension string replacement method for +/-800 kV extra-high voltage direct-current line - Google Patents
Six-connection three-hanging-point tension string replacement method for +/-800 kV extra-high voltage direct-current line Download PDFInfo
- Publication number
- CN108462101B CN108462101B CN201810163799.4A CN201810163799A CN108462101B CN 108462101 B CN108462101 B CN 108462101B CN 201810163799 A CN201810163799 A CN 201810163799A CN 108462101 B CN108462101 B CN 108462101B
- Authority
- CN
- China
- Prior art keywords
- string
- tension
- porcelain bottle
- clamp
- porcelain
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 139
- 239000012212 insulator Substances 0.000 claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 13
- 239000012211 strain insulator Substances 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 239000004020 conductor Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- 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
- Insulators (AREA)
Abstract
The invention relates to a method for replacing a six-connection three-hanging-point tension string of a +/-800 kV extra-high voltage direct current line, which is characterized in that a tension wire separated front clamp, a tension wire closed rear clamp and 2 hydraulic tighteners are adopted to be matched for use in replacing a first porcelain bottle at the front end of a porcelain bottle string; when any one porcelain bottle in the middle of the porcelain bottle string is replaced, a tension wire closed front clamp, a tension wire closed rear clamp and 2 hydraulic tighteners are adopted to be matched for use; when any one porcelain bottle in the middle of the porcelain bottle string is replaced, a tension wire closed front clamp, a tension wire closed rear clamp and 2 hydraulic tighteners are adopted to be matched for use; the operating platform used when the porcelain insulator string is replaced is an upper string operating platform or a lower string operating platform; the method provided by the invention realizes uninterrupted maintenance and uninterrupted and continuous power supply. The operating platform is convenient for carrying out the replacement operation of the porcelain insulator in the implementation process of the method.
Description
Technical Field
The invention belongs to the technical field of live working of power grids and power transmission lines, and particularly relates to a method for replacing a six-connection three-hanging-point tension string of a +/-800 kV ultrahigh-voltage direct-current line.
Background
As an important component of an extra-high voltage backbone network frame of a national grid, the Zault-Qingzhou +/-800 kilovolt high-voltage direct-current transmission project is a first extra-high voltage power delivery channel in the east of inner Mongolia.
And large-capacity power transmission and conversion of the +/-800 kV ultra-high voltage transmission line. The power grid safety is decisively influenced at the beginning of the moment of accessing the power grid, and once a power accident happens, the power grid generates great fluctuation, oscillation and even disconnection. The problems that how to improve the power supply reliability and strengthen the operation and maintenance technology, and how to adopt the live working technology to realize the uninterrupted maintenance and the uninterrupted continuous power supply become necessary to be solved.
The +/-800 kV extra-high voltage direct current transmission line has long insulator strings, large porcelain bottles and more insulator strings, and when a fault occurs, the fault needs to be completed safely by the minimum personnel allocation, the minimum operation tools, the minimum soaring operation time and the minimum labor intensity. Thus, the hot-line work method needs to be scientific, simple, precise, reasonable in tool structure, light in weight, flexible and convenient to operate.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for replacing a six-connection three-hanging-point tension string of a +/-800 kV extra-high voltage direct current line, which realizes uninterrupted maintenance and can supply power without short and continuous time.
In order to achieve the purpose, the technical scheme of the invention comprises the following steps:
the first porcelain bottle at the front end of the porcelain bottle string is replaced by adopting a strain wire separated front clamp, a strain wire closed rear clamp and 2 hydraulic tighteners which are matched for use; the tension-resistant wire separated front clamp and the tension-resistant wire closed rear clamp are respectively positioned at the front end and the rear end of the porcelain bottle to be replaced, and the two ends of the hydraulic tightener are respectively connected with the tension-resistant wire separated front clamp and the tension-resistant wire closed rear clamp.
The mounting method for replacing the first porcelain bottle at the front end of the porcelain bottle string comprises the following steps: anchoring a strain wire separated front clamp on a triangular connecting plate at the wire side of a porcelain bottle to be replaced, anchoring the strain wire closed rear clamp on a steel cap of a second porcelain bottle at the front end, connecting 2 hydraulic tighteners with a front clamp and a rear clamp, manually tightening a mechanical part at the front end of the hydraulic tightener after all the clamps are anchored, ensuring that two sides are tightened simultaneously, and when a mechanical lead screw is tightened to be manually operated and fixed, enabling two sides to pass through hydraulic handle mobile phone hydraulic cylinders until the porcelain bottle to be replaced in the middle of a tool is loosened, so that string removal can be achieved, the porcelain bottle falls to the ground, and a new porcelain bottle is replaced; the front end is an iron tower end, and the rear end is a wire end.
When any one porcelain bottle in the middle of the porcelain bottle string is replaced, a tension wire closed front clamp, a tension wire closed rear clamp and 2 hydraulic tighteners are adopted to be matched for use; the clamp is located the front and back both ends of treating the change vase respectively behind clamp and the strain insulator line closed before the strain insulator line closed, and the clamp is preceding to clamp and the strain insulator line closed after the strain insulator line closed is connected respectively at the both ends of hydraulic pressure turn-buckle.
The installation method when any one porcelain bottle in the middle of the porcelain bottle string is replaced comprises the following steps: the tension line closed front clamp and the tension line closed rear clamp are anchored on porcelain bottle steel caps at two sides of a porcelain bottle to be replaced according to the principle of 'three short four clamp', the porcelain bottle to be replaced is positioned in the middle of the clamp, after all the clamps are anchored, a mechanical part at the front end of a hydraulic tightener is tightened manually to ensure that two sides are tightened simultaneously, when a mechanical lead screw is tightened to be in a manual operation, two sides pass through hydraulic handle mobile phone hydraulic cylinders until the porcelain bottle to be replaced in the middle of a tool is loosened, so that string removal can be achieved, the porcelain bottle falls to the ground, and a new porcelain bottle is replaced; the front section is an iron tower section, and the rear end is a wire end.
When the last porcelain bottle at the rear end of the porcelain bottle string is replaced, a tension line closed front clamp, a tension line separated rear clamp and 2 hydraulic tighteners are used in a matched mode; the front clamp and the rear clamp of the strain wire closed type are respectively located at the front end and the rear end of the porcelain bottle to be replaced, and the two ends of the hydraulic wire tightener are respectively connected with the front clamp and the rear clamp of the strain wire closed type.
The mounting method for replacing the last porcelain bottle at the rear end of the porcelain bottle string comprises the following steps: the tension-resistant wire is anchored on a triangular connecting plate on the cross arm side where the porcelain bottle to be replaced is located, the tension-resistant wire is anchored on a second porcelain bottle steel cap on the cross arm side in a closed mode, 2 hydraulic tighteners are connected with a front clamp and a rear clamp, after all the clamps are anchored, a mechanical part at the front end of the hydraulic tightener is tightened manually to ensure that two sides are tightened simultaneously, when a mechanical lead screw is tightened to be manually operated and fixed, the two sides can be separated from each other through hydraulic handle mobile phone hydraulic cylinders until the porcelain bottle to be replaced in the middle of a tool is loosened, and the porcelain bottle can fall to the ground to replace a new porcelain bottle; the front section is an iron tower section, and the rear end is a wire end.
Further, the operating platform used when the porcelain bottle string is replaced is an upper string operating platform or a lower string operating platform;
the upper string operating platform comprises two upper string main rods and an upper string seat plate arranged between the two upper string main rods, and the upper string main rods are connected with porcelain insulator steel caps of the strain insulator strings; the upper string main rod is uniformly distributed with upper string positioning holes, the number of the upper string seat plates is one or more, and the two ends of the upper string seat plates are respectively provided with upper string positioning rods matched with the upper string positioning holes;
the lower string operating platform comprises two lower string main rods and a lower string pedal arranged below the two lower string main rods, the longitudinal section of the lower string pedal is a trapezoid with a wide upper part and a narrow lower part, and the lower string main rods are connected with porcelain insulator steel caps of the strain insulator string; the lower string main rod is uniformly distributed with lower string positioning holes, the number of the lower string pedals is one or more, and the upper parts of the two ends of the lower string pedals are respectively provided with a lower string fixing rod matched with the lower string positioning holes.
Furthermore, the lower stringing operation platform also comprises lower stringing support upright rods which are respectively arranged at the lower ends of the two lower stringing main rods; the lower stringing support vertical rod comprises an upper vertical rod and a lower vertical rod, the upper end of the upper vertical rod is fixedly connected to the lower stringing main rod, and the lower end of the upper vertical rod is connected with the upper end of the lower vertical rod through threads.
Furthermore, the upper end and the lower end of the upper string seat plate are provided with an upper string positioning rod, the left end and the right end of the upper string seat plate are respectively provided with an upper string inserting groove and an upper string inserting plate, and the upper string inserting groove is matched with the upper string inserting plate.
Further, the device also comprises a porcelain insulator transmission device; the porcelain insulator conveying device comprises a conveying main rod and an opening support, wherein the conveying main rod is obliquely arranged, the opening support is slidably arranged on the conveying main rod, the higher end of the conveying main rod is connected with a porcelain insulator steel cap, the lower end of the conveying main rod is fixed on the ground through a fixing support, the upper end of the opening support is arranged on the conveying main rod through a pulley, and an inverted U-shaped opening is formed in the lower part of the opening support; and a lifting ring is arranged at the higher end of the transmission main rod.
The invention has the following positive effects:
when the single insulator, namely the porcelain bottle, is replaced, any one porcelain bottle in six strings of porcelain bottles in the tension six-connection three-hanging-point string can be replaced by adopting the universal fixture with three middle and side parts, so that the number of fixtures is reduced, and the working strength is greatly reduced.
The invention adopts a method of replacing a single insulator, namely a porcelain bottle, by adopting a mode of matching the tension-resistant clamp and the closed clamp, and the whole set of tool has the lightest weight and the least quantity.
The operating platform position in the implementation process of the invention can be reasonably installed according to the position of the porcelain bottle to be replaced, when the upper string operating platform is used for replacing the porcelain bottle of the upper porcelain bottle string, an operator sits on the upper string seat plate to work, and when the lower string operating platform is used for replacing the porcelain bottle of the lower porcelain bottle string, the operator stands on the lower string pedal plate due to the spatial position and is lower than the height of the porcelain bottle string, so that the operation is convenient. In addition, the operating platform also comprises a porcelain insulator transmission device which is used for transmitting the replaced porcelain insulator.
Drawings
FIG. 1 is a schematic diagram of a circuit structure before a first porcelain bottle at the front end of a porcelain bottle string is replaced;
FIG. 2 is a schematic diagram of a circuit structure when a first porcelain bottle at the front end of a porcelain bottle string is replaced according to the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic diagram of a circuit structure before any one of the porcelain bottles in the porcelain bottle string is replaced;
FIG. 5 is a schematic diagram of a circuit structure when any one of the porcelain bottles in the porcelain bottle string is replaced according to the present invention;
FIG. 6 is an enlarged view of the portion B of FIG. 4;
FIG. 7 is a schematic diagram of a circuit structure before the last porcelain bottle at the rear end of the porcelain bottle string is replaced according to the present invention;
FIG. 8 is a schematic diagram of a circuit structure of the present invention when replacing the last porcelain bottle at the rear end of the porcelain bottle string;
FIG. 9 is an enlarged view of the portion C of FIG. 8;
FIG. 10 is a schematic structural diagram of a stringing operation platform according to the present invention;
FIG. 11 is a schematic side view of the foot pedal of the lower string platform of the present invention;
FIG. 12 is a schematic structural view of the seat plate assembly of the present invention;
fig. 13 is a schematic structural view of the porcelain insulator conveying apparatus of the present invention;
in the attached drawing, a strain wire separated front clamp, an e strain wire closed rear clamp, an f hydraulic tightener, an e strain wire closed rear clamp, a z to-be-replaced porcelain bottle, a j strain wire closed front clamp, an a-1 upper string main rod, an a-2 upper string seat plate, an a-3 upper string positioning hole, an a-4 upper string inserting plate, an a-5 upper string inserting groove, an a-6 upper string positioning rod, a b-1 lower string main rod, a b-2 lower string pedal plate, a b-3 lower string positioning hole, a c-1 conveying main rod, a c-2 opening bracket, a c-3 hoisting ring and a c-4 fixing bracket.
Detailed Description
As shown in fig. 1-13, a six-connection three-hanging-point tension string of a +/-800 kV extra-high voltage direct current line is replaced according to the following method of the invention.
Example 1
In the invention, the front section is an iron tower end, and the rear end is a wire end.
As shown in fig. 1-3, when replacing the first porcelain bottle at the front end of the porcelain bottle string, a strain wire separated front clamp d, a strain wire closed rear clamp e and 2 hydraulic tighteners f are used in cooperation; the tension-resistant wire separated front clamp d and the tension-resistant wire closed rear clamp e are respectively located at the front end and the rear end of the porcelain bottle z to be replaced, and the two ends of the hydraulic tightener f are respectively connected with the tension-resistant wire separated front clamp d and the tension-resistant wire closed rear clamp e. And the porcelain bottle z to be replaced is positioned in an area surrounded by the tension wire separated front clamp d, the tension wire closed rear clamp e and the 2 hydraulic tighteners f. The front end and the rear end of the invention are an iron tower end and a wire end respectively.
The installation method comprises the following steps: anchor the triangle of the wire side of the vase z department of waiting to change with clamp d before strain insulator line disconnect-type and pull on, clamp d anchor is on the steel cap of front end second piece vase before strain insulator line disconnect-type, 2 clamps around hydraulic pressure turn-buckle f is connected, after all clamps anchor, tighten up the mechanical part of hydraulic pressure turn-buckle f front end with manual, guarantee both sides tighten up simultaneously, when mechanical lead screw tightens up the manual operation motionless, hydraulic handle cell-phone pneumatic cylinder is passed through on both sides, the vase z of waiting to change in the middle of the instrument is lax, alright reach and take off the cluster, fall to ground, change new vase.
Example 2
As shown in fig. 4-6, when any one of the china bottles in the middle of the china bottle string is replaced, a tension line closed front clamp j, a tension line closed rear clamp e and 2 hydraulic tighteners f are adopted to be used in a matching way; the tension-resistant wire closed front clamp j and the tension-resistant wire closed rear clamp e are respectively positioned at the front end and the rear end of the porcelain bottle z to be replaced, and the two ends of the hydraulic tightener f are respectively connected with the tension-resistant wire closed front clamp j and the tension-resistant wire closed rear clamp e. And the porcelain bottle z to be replaced is positioned in an area surrounded by the closed tension wire front clamp j, the closed tension wire rear clamp e and the 2 hydraulic tighteners f.
The installation method comprises the following steps: the utility model discloses a porcelain insulator z's principle card anchor is on the both sides vase steel cap that needs to change vase z to the card j before strain insulator closed and strain insulator closed back card ann shine "three short four of card, treat to change vase z and be located in the middle of the fixture, all fixture anchors after, with the mechanical part of manual tightening up hydraulic pressure turn-buckle f front end, guarantee both sides and tighten up simultaneously, mechanical lead screw tightens up when manual operation is motionless, hydraulic handle cell-phone pneumatic cylinder is passed through on both sides, the vase z who treats to change in the middle of the instrument relaxes, alright reach and take off the cluster, fall to ground, change new vase.
Example 3
As shown in fig. 7-9, when the last porcelain bottle at the rear end of the porcelain bottle string is replaced, a tension line closed front clamp j, a tension line separated rear clamp h and 2 hydraulic tighteners f are used in cooperation; the tension-resistant wire closed front clamp j and the tension-resistant wire separated rear clamp h are respectively positioned at the front end and the rear end of the porcelain bottle z to be replaced, and the two ends of the hydraulic tightener f are respectively connected with the tension-resistant wire closed front clamp j and the tension-resistant wire separated rear clamp h. And the porcelain bottle z-to-be-replaced is positioned in an area surrounded by the closed front clamp j of the tension wire, the separated rear clamp h of the tension wire and the 2 hydraulic tighteners f.
The installation method comprises the following steps:
the anchor of card h is even pulled at the triangle of treating the cross arm side of changing vase z place behind strain insulator line disconnect-type, the anchor of card j is on cross arm side second piece vase steel cap before the strain insulator line closed, 2 clamps around individual hydraulic pressure turn-buckle f is connected, after all clamps anchors, with the mechanical part of manual tightening hydraulic pressure turn-buckle f front end, guarantee both sides and tighten up simultaneously, when mechanical lead screw tightened up the manual operation motionless, hydraulic handle cell-phone pneumatic cylinder is passed through on both sides, it is lax to treat the vase z of changing in the middle of the instrument, alright reach and take off the cluster, fall to ground, change new vase.
The invention has the advantages that: (1) the research object of the invention is a +/-800 kV extra-high voltage eight-bundle conductor direct current tension resistant line which is different from the prior six-bundle conductor, the conductor is JL1/G2A-1250/100, and the requirements on mechanical strength, insulating property and electric resistance are different.
(2) In the method for replacing the single insulator, the tension separation type clamp which is universal for three items of middle and side phase is adopted, and the clamp can replace any one porcelain bottle in six strings of porcelain bottles in the tension six-connection three-hanging-point string, so that the number of the clamps is reduced, and the working strength is greatly reduced.
(3) The method for replacing the single insulator in the extra-high voltage line by adopting the mode of matching the tension-resistant clamp and the closed clamp has the advantages that the whole set of tool is lightest in weight and least in quantity.
As shown in fig. 10-13, the present invention is applied to an operating platform used when a six-connection three-hanging-point tension string of a ± 800 kV extra-high voltage direct current line replaces a porcelain insulator, and different platforms are selected according to the position of the porcelain insulator to be replaced.
The operation platform is an upper string operation platform or a lower string operation platform; work platform position
According to the position of the porcelain insulator to be replaced, the porcelain insulator string mounting device is reasonably mounted, when the upper string operating platform is used for replacing the porcelain insulator of the upper porcelain insulator string, an operator sits on the upper string seat plate a-2 to work, and when the lower string operating platform is used for replacing the porcelain insulator of the lower porcelain insulator string, due to the spatial position, the operator stands on the lower string pedal plate b-2 and is lower than the height of the porcelain insulator string, so that the porcelain insulator string mounting device is convenient to operate.
The upper string operating platform comprises two upper string main rods a-1 and an upper string seat plate a-2 arranged between the two upper string main rods a-1, and the upper string main rods a-1 are connected with porcelain insulator steel caps of strain strings;
the lower string operating platform comprises two lower string main rods b-1 and a lower string pedal b-2 arranged below the two lower string main rods b-1, the longitudinal section of the lower string pedal b-2 is in a trapezoid shape with a wide upper part and a narrow lower part, and the lower string main rods b-1 are connected with porcelain insulator steel caps of strain strings.
Furthermore, the upper string main rod a-1 is uniformly distributed with one or more upper string positioning holes a-3, the number of the upper string seat plates a-2 is one or more, the two ends of the upper string seat plates a-2 are respectively provided with an upper string positioning rod a-6 matched with the upper string positioning holes a-3, the upper string positioning rod a-6 can be a threaded rod, the upper string positioning holes a-3 are threaded holes, and the upper string positioning rod a-6 is screwed into the upper string positioning holes a-3 for fixation when in use. The size of the upper string seat board a-2 is matched with the distance between the two upper string main rods a-1, the upper string seat board a-2 is just positioned between the two upper string main rods a-1, and two ends of the upper string seat board a-2 are respectively connected with the two upper string main rods a-1.
Furthermore, the upper and lower ends of the upper string seat plate a-2 are provided with upper string positioning rods a-6, the left and right ends of the upper string seat plate a-2 are respectively provided with upper string slots a-5 and upper string insertion plates a-4, the upper string slots a-5 are matched with the upper string insertion plates a-4, when the number of the china bottles to be replaced is large, a plurality of upper string seat plates a-2 can be inserted together and then fixed between two upper string main rods a-1, the upper and lower ends of the upper string seat plates a-2 are matched with the upper string positioning holes a-3 through the upper string positioning rods a-6 for fixing during insertion, then the adjacent upper string seat plates a-2 are fixed through the matching of the upper string slots a-5 and the upper string insertion plates a-4, and the upper string insertion plates a-4 are inserted into the corresponding upper slot strings a-5, is convenient and quick. The upper string seat plate a-2 is a flat plate. When the porcelain insulator string replacing device is used, an operator who replaces a porcelain insulator sits on the string sitting plate a-2, can conveniently touch the porcelain insulator string above the operator, and then replaces the porcelain insulator string, so that the working efficiency is greatly improved.
The lower string main rod b-1 is uniformly distributed with lower string positioning holes b-3, the number of the lower string pedals b-2 is one or more, and the upper parts of the two ends of the lower string pedals b-2 are respectively provided with a lower string positioning rod matched with the lower string positioning holes b-3. The lower string of pedal plates b-2 realize the fixation of the lower string of pedal plates b-2 through the connection between the lower string of positioning holes b-3 and the lower string of positioning rods b-4, the lower string of positioning rods b-4 can be selected from screw rods, the lower string of positioning holes b-3 are provided with screw threads matched with the screw rods, or the lower string of positioning rods b-4 are inserted in the lower string of positioning holes b-3, in addition, according to the structure of the upper string of sitting plates a-2, the upper and lower ends of the lower string of pedal plates b-2 are provided with positioning rods, the two ends of the bottom of the lower string of pedal plates b-2 are respectively provided with slots and inserting plates, so that the narrowest part of the bottom of the lower string of pedal plates b-2 can be connected together through the slots and the inserting plates, when a great number of porcelain bottles are to be replaced, the extension, the structure is flexible.
The size of the lower string of pedals b-2 is matched with the distance between the two lower string of main rods b-1, namely the lower string of pedals b-2 are just positioned between the two lower string of main rods b-1 and are fixed through the lower string of positioning holes b-3 and the lower string of positioning rods b-4.
Furthermore, the lower string operating platform also comprises lower string supporting upright rods which are respectively arranged at the lower ends of the two lower string main rods b-1 and used for supporting the lower string main rods b-1.
Further, the lower string support vertical rod comprises an upper vertical rod and a lower vertical rod, the upper end of the upper vertical rod is fixedly connected to the lower string main rod b-1, the lower end of the upper vertical rod is connected with the upper end of the lower vertical rod through threads, specifically, the upper portion of the lower vertical rod is of a hollow structure, internal threads are arranged inside the lower vertical rod, external threads are arranged on the periphery of the lower end of the upper vertical rod, the internal threads of the interior of the lower vertical rod are matched with the external threads of the lower end of the upper vertical rod, and the length of the interior of the lower vertical rod can be adjusted through rotating threads. Through adjusting the degree of screw thread precession between last pole setting and the lower pole setting, can adjust the relative height of last pole setting and lower pole setting, also can adjust the whole height that the cluster supported the pole setting down promptly.
The invention also comprises a porcelain insulator transmission device which is used for transmitting the replaced porcelain insulator; the porcelain insulator conveying device comprises a conveying main rod c-1 arranged in an inclined mode and an opening support c-2 arranged on the conveying main rod c-1 in a sliding mode, the higher end of the conveying main rod c-1 is connected with a porcelain insulator steel cap, the lower end of the conveying main rod c-1 is fixed to the ground through a fixing support c-4, the upper end of the opening support c-2 is arranged on the conveying main rod c-1 through a pulley, and an opening is formed in the lower portion of the opening support c-2. The opening at the lower part of the opening support c-2 is matched with the insulator of the porcelain bottle to be replaced, the insulator of the porcelain bottle to be replaced is clamped at the lower part of the opening support c-2, the opening support c-2 is pushed downwards, and the insulator of the porcelain bottle can be conveyed downwards smoothly.
Further, an opening at the lower part of the opening bracket c-2 is in an inverted U shape; and a lifting ring c-3 is arranged at the higher end of the transmission main rod c-1 and is used for being matched with a crane to lift the transmission main rod c-1 to a preset position.
The porcelain insulator transmission device can be matched with the upper string operation platform or the lower string operation platform for use, so that the porcelain insulator can be conveniently replaced.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A +/-800 kV extra-high voltage direct current line six-connection three-hanging-point strain insulator-string replacing method is characterized by comprising the following steps: when a first porcelain bottle at the front end of the porcelain bottle string is replaced, a strain wire separated front clamp (d), a strain wire closed rear clamp (e) and 2 hydraulic tighteners (f) are used in a matched mode; the tension line separated front clamp (d) and the tension line closed rear clamp (e) are respectively positioned at the front end and the rear end of the porcelain bottle (z) to be replaced, and the two ends of the hydraulic tightener (f) are respectively connected with the tension line separated front clamp (d) and the tension line closed rear clamp (e);
the installation method comprises the following steps: anchoring a strain wire separated front clamp (d) on a triangular connecting plate at the wire side of a porcelain bottle (z) to be replaced, anchoring a strain wire closed rear clamp (e) on a steel cap of a second porcelain bottle at the front end, connecting 2 hydraulic tighteners (f) with a front clamp and a rear clamp, manually tightening a mechanical part at the front end of the hydraulic tightener (f) after all the clamps are anchored, ensuring that two sides are tightened simultaneously, and when a mechanical lead screw is tightened to be manually operated and fixed, enabling two sides to pass through hydraulic handle mobile phone hydraulic cylinders until the porcelain bottle (z) to be replaced in the middle of a tool is loosened, so that string removal can be achieved, the porcelain bottle falls to the ground, and a new porcelain bottle is replaced; the front end is an iron tower end, and the rear end is a wire end.
2. The +/-800 kV extra-high voltage direct current line six-connection three-hanging-point strain insulator-string replacing method according to claim 1, characterized in that: when any one porcelain bottle in the middle of the porcelain bottle string is replaced, a tension line closed front clamp (j), a tension line closed rear clamp (e) and 2 hydraulic tighteners (f) are used in a matched mode; the tension-resistant wire closed front clamp (j) and the tension-resistant wire closed rear clamp (e) are respectively positioned at the front end and the rear end of a porcelain bottle (z) to be replaced, and the two ends of the hydraulic tightener (f) are respectively connected with the tension-resistant wire closed rear clamp (e) and the tension-resistant wire closed front clamp (j).
3. The +/-800 kV extra-high voltage direct-current line six-connection three-hanging-point strain insulator-string replacing method according to claim 2, characterized in that: the installation method comprises the following steps: the tension-resistant wire closed front clamp (j) and the tension-resistant wire closed rear clamp (e) are anchored on porcelain bottle steel caps at two sides of a porcelain bottle (z) to be replaced according to the principle of 'three short and four clamping', the porcelain bottle (z) to be replaced is positioned in the middle of the clamps, after all the clamps are anchored, a mechanical part at the front end of a hydraulic tightener (f) is manually tightened, two sides are simultaneously tightened, when a mechanical lead screw is tightened to be manually operated and fixed, two sides pass through hydraulic handle mobile phone hydraulic cylinders until the porcelain bottle (z) to be replaced in the middle of a tool is loosened, and then string removal, falling to the ground and replacing a new porcelain bottle can be achieved; the front section is an iron tower section, and the rear end is a wire end.
4. The +/-800 kV extra-high voltage direct current line six-connection three-hanging-point strain insulator-string replacing method according to claim 1, characterized in that: when the last porcelain bottle at the rear end of the porcelain bottle string is replaced, a tension-resistant wire closed front clamp (j), a tension-resistant wire separated rear clamp (h) and 2 hydraulic tighteners (f) are used in a matched mode; the tension-resistant wire closed front clamp (j) and the tension-resistant wire separated rear clamp (h) are respectively positioned at the front end and the rear end of a porcelain bottle (z) to be replaced, and the two ends of the hydraulic tightener (f) are respectively connected with the tension-resistant wire closed front clamp (j) and the tension-resistant wire separated rear clamp (h).
5. The +/-800 kV extra-high voltage direct-current line six-connection three-hanging-point strain insulator-string replacing method according to claim 4, characterized in that: the installation method comprises the following steps: the tension-resistant wire is anchored on a triangular connecting plate on the cross arm side where the porcelain bottle (z) to be replaced is located, a closed front clamp (j) of the tension-resistant wire is anchored on a second porcelain bottle steel cap on the cross arm side, 2 hydraulic tighteners (f) are connected with a front clamp and a rear clamp, after all the clamps are anchored, a mechanical part at the front end of the hydraulic tightener (f) is manually tightened, two sides are simultaneously tightened, when a mechanical lead screw is tightened to be manually operated and fixed, two sides pass through hydraulic handle mobile phone hydraulic cylinders until the porcelain bottle (z) to be replaced in the middle of a tool is loosened, and then string removal, falling to the ground and replacing a new porcelain bottle can be achieved; the front section is an iron tower section, and the rear end is a wire end.
6. The method for replacing six-connection three-hanging-point tension string of +/-800 kV extra-high voltage direct-current line according to any one of claims 1-5, characterized by comprising the following steps: the operating platform used when the porcelain insulator string is replaced is an upper string operating platform or a lower string operating platform; the upper string operating platform comprises two upper string main rods (a-1) and an upper string seat plate (a-2) arranged between the two upper string main rods (a-1), and the upper string main rods (a-1) are connected with porcelain insulator steel caps of the strain insulator string; the upper string main rod (a-1) is uniformly distributed with upper string positioning holes (a-3), the number of the upper string seat plates (a-2) is one or more, and the two ends of the upper string seat plates (a-2) are respectively provided with upper string positioning rods (a-6) matched with the upper string positioning holes (a-3);
the lower string operating platform comprises two lower string main rods (b-1) and a lower string pedal (b-2) arranged below the two lower string main rods (b-1), the longitudinal section of the lower string pedal (b-2) is in a trapezoid shape with a wide upper part and a narrow lower part, and the lower string main rods (b-1) are connected with porcelain insulator steel caps of strain strings; the lower stringing main rod (b-1) is uniformly distributed with lower stringing positioning holes (b-3), the number of the lower stringing pedals (b-2) is one or more, and the upper parts of the two ends of the lower stringing pedals (b-2) are respectively provided with a lower stringing fixed rod matched with the lower stringing positioning holes (b-3).
7. The +/-800 kV extra-high voltage direct current line six-connection three-hanging-point strain insulator-string replacing method according to claim 6, characterized in that: the lower stringing operation platform also comprises lower stringing support upright rods which are respectively arranged at the lower ends of the two lower stringing main rods (b-1); the lower stringing support vertical rod comprises an upper vertical rod and a lower vertical rod, the upper end of the upper vertical rod is fixedly connected to the lower stringing main rod (b-1), and the lower end of the upper vertical rod is connected with the upper end of the lower vertical rod through threads.
8. The +/-800 kV extra-high voltage direct current line six-connection three-hanging-point strain insulator-string replacing method according to claim 7, characterized in that: the upper string positioning rods (a-6) are arranged at the upper end and the lower end of the upper string seat plate (a-2), the upper string inserting grooves (a-5) and the upper string inserting plates (a-4) are respectively arranged at the left end and the right end of the upper string seat plate (a-2), and the upper string inserting grooves (a-5) are matched with the upper string inserting plates (a-4).
9. The method for replacing six-connection three-hanging-point tension string of +/-800 kV extra-high voltage direct-current line according to claim 6, characterized by comprising the following steps: the porcelain insulator conveying device is also included; the porcelain insulator conveying device comprises a conveying main rod (c-1) arranged in an inclined mode and an opening support (c-2) arranged on the conveying main rod (c-1) in a sliding mode, the higher end of the conveying main rod (c-1) is connected with a porcelain insulator steel cap, the lower end of the conveying main rod (c-1) is fixed to the ground through a fixing support (c-4), the upper end of the opening support (c-2) is arranged on the conveying main rod (c-1) through a pulley, and an inverted U-shaped opening is formed in the lower portion of the opening support (c-2); a lifting ring (c-3) is arranged at the higher end of the transmission main rod (c-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810163799.4A CN108462101B (en) | 2018-02-27 | 2018-02-27 | Six-connection three-hanging-point tension string replacement method for +/-800 kV extra-high voltage direct-current line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810163799.4A CN108462101B (en) | 2018-02-27 | 2018-02-27 | Six-connection three-hanging-point tension string replacement method for +/-800 kV extra-high voltage direct-current line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108462101A CN108462101A (en) | 2018-08-28 |
| CN108462101B true CN108462101B (en) | 2020-04-24 |
Family
ID=63216592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810163799.4A Active CN108462101B (en) | 2018-02-27 | 2018-02-27 | Six-connection three-hanging-point tension string replacement method for +/-800 kV extra-high voltage direct-current line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108462101B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110932168B (en) * | 2019-11-18 | 2021-05-04 | 浙江省送变电工程有限公司 | Method for replacing strain insulator of extra-high voltage direct current full tower |
| CN113871111A (en) * | 2021-09-18 | 2021-12-31 | 国网江苏省电力有限公司建设分公司 | Six-connection six-hanging suspension string for large span and large tonnage |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2354373A (en) * | 1999-09-07 | 2001-03-21 | Barry Waddington | Maintenance of electrical transmission cable assemblies |
| CN201656334U (en) * | 2009-12-30 | 2010-11-24 | 华北电网有限公司北京超高压公司 | Clamp |
| CN203398638U (en) * | 2013-07-16 | 2014-01-15 | 国家电网公司 | Operation ladder for painting insulator string in power transmission line |
| CN205070303U (en) * | 2015-10-30 | 2016-03-02 | 国网青海省电力公司检修公司 | 750kV circuit block of four strain insulator string tip fixture |
| CN205998876U (en) * | 2016-07-27 | 2017-03-08 | 广东翔鹰化工有限公司 | A kind of resin raw material mountain region transmission equipment |
| CN106602464A (en) * | 2016-12-20 | 2017-04-26 | 国家电网公司 | Power transmission line steel pipe tower work platform |
| CN107032067A (en) * | 2017-05-26 | 2017-08-11 | 江苏川钿电气机械有限公司 | Conveyer with hook |
| CN206931927U (en) * | 2017-06-16 | 2018-01-26 | 国网河南省电力公司检修公司 | One kind changes the adjustable closed type fixture of porcelain vase |
-
2018
- 2018-02-27 CN CN201810163799.4A patent/CN108462101B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108462101A (en) | 2018-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9461447B2 (en) | Maintenance tool for insulator of direct current transmission line | |
| CN201846021U (en) | Insulating gin for replacing 750 kV tension insulator | |
| CN101154797B (en) | Auxiliary means for changing porcelain insulator of telegraph pole | |
| CN108155601A (en) | A kind of method that on-load straight line pole changes tension-resistant rod | |
| CN108462101B (en) | Six-connection three-hanging-point tension string replacement method for +/-800 kV extra-high voltage direct-current line | |
| CN104143782B (en) | The electrification replacing tool of one ± 800kV line tension insulator chain and method | |
| WO2012088986A1 (en) | Maintenance tool used for direct current transmission line | |
| CN104020400B (en) | 750kV insulating tool segmentation ac voltage withstanding test method | |
| CN103944107A (en) | Tool for electrified replacement of 500kV strain insulator string | |
| CN101710681A (en) | Special conductor lifting device for 220KV horizontal double bundle conductor | |
| CN102270817A (en) | Tool for changing tension insulator in live line | |
| CN204789734U (en) | Electrician's utensil is tested to portable high pressure | |
| CN205565511U (en) | Change insulators cross arm fixture for operation with two steel pipe poles that return of tower | |
| CN210779825U (en) | Device for replacing whole string of tension insulators at cross arm end and wire end of direct-current transmission line | |
| CN207183929U (en) | A kind of 110kV power line tensions list insulator string more changing device | |
| CN202339358U (en) | Test lead supporting device | |
| CN203813330U (en) | Tool for live-line replacement of 500 kV strain insulator strings | |
| CN208782373U (en) | Line lifter bracket and the line lifter for applying it | |
| CN104201606B (en) | A kind of 800KV strain insulator strings disengaging fixture | |
| CN204793832U (en) | Join in marriage electrified maintenance in many loop lines of net way and carry lineman's utensil | |
| CN108462099B (en) | Method for replacing double-connection double-hanging-point suspension string insulator of +/-800 kV extra-high voltage line | |
| CN208835588U (en) | A kind of bottle-holding rack fixture | |
| CN207853325U (en) | A kind of six or three hanging point strain insulator-string operating platform of ± 800 kV UHVDC Transmission Lines | |
| CN206076838U (en) | A kind of 500kV transmission pressures overhanging golden tool more changing device | |
| CN201312079Y (en) | Clamping apparatus for live line replacement of suspended insulator in middle of 500KV untypical tangent tower via splicing method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |