CN109903937B - DC porcelain insulator zinc band, DC porcelain insulator, and mounting tool and mounting method thereof - Google Patents
DC porcelain insulator zinc band, DC porcelain insulator, and mounting tool and mounting method thereof Download PDFInfo
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- CN109903937B CN109903937B CN201910297627.0A CN201910297627A CN109903937B CN 109903937 B CN109903937 B CN 109903937B CN 201910297627 A CN201910297627 A CN 201910297627A CN 109903937 B CN109903937 B CN 109903937B
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- zinc
- rope
- annular gap
- porcelain insulator
- belt
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 111
- 239000011701 zinc Substances 0.000 title claims abstract description 100
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 100
- 229910052573 porcelain Inorganic materials 0.000 title claims abstract description 49
- 239000012212 insulator Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 238000009434 installation Methods 0.000 claims abstract description 19
- 238000004804 winding Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
Abstract
The invention discloses a direct current porcelain insulator zinc band which is embedded in an annular gap between a direct current porcelain insulator steel cap and a porcelain skirt, wherein one side of the zinc band, which is away from the annular gap, is provided with a groove which extends along the long side direction of the zinc band so as to be embedded in a rope to tighten the zinc band in the annular gap in an annular direction. The invention also discloses a direct-current porcelain insulator comprising the zinc strip, and an installation tool and an installation method thereof. The zinc belt is provided with the track groove, the zinc belt is annularly tightened by the rope embedded in the groove to be embedded in the annular gap, and the zinc belt can be installed.
Description
Technical Field
The invention belongs to the technical field of power engineering, and particularly relates to a direct-current porcelain insulator zinc band, a direct-current porcelain insulator, an installation tool and an installation method of the direct-current porcelain insulator.
Background
The porcelain insulator is widely applied to the direct current transmission line in China due to stable mechanical strength, the long-term effect of leakage current in the special environment is not considered in early products, so that the porcelain insulator steel cap is corroded, after the problem is found in operation, a zinc ring is additionally arranged between the porcelain insulator steel cap and a porcelain skirt gap to serve as a sacrificial electrode, the steel cap is prevented from being corroded, the existing zinc ring is mainly of two types, one type is in a horseshoe shape, the effective angle of the zinc ring is about 220 degrees after the steel cap and the porcelain skirt gap are directly clamped and installed from bottom to top, and the opening is upward, so that the problem that the porcelain insulator frequently falls under the action of dead weight, wind vibration and other factors in operation is solved, and statistics shows that the line adopting the zinc ring in the form has the falling rate of about 20 percent, and life and property safety of movable personnel and vehicles below the large line is seriously threatened; the other is a totally-enclosed circular structure, two semicircular zinc rings with corresponding specifications are required to be customized according to different insulator types, two semicircular ends are sealed into a circle through bolt connection, statistics shows that the current dropping rate of a circuit adopting the zinc ring is 0, a plurality of dies are required to be opened in the mode, the problem of error is very easy to occur when the insulators of different types of towers are shipped according to different places, each insulator needs to be manually fastened in a bolt manner in overhead operation on the towers, the zinc ring sealing operation is very inconvenient, each string of insulators of an extra-high voltage direct current circuit is larger than 60, one pole of each base tower is provided with multiple forms such as duplex, triplet and quadruple, and the like, so that the zinc ring sealing is required in a mode of manually fastening the bolts, the high concentration of spirit demands and the huge physical consumption exist, and the power consumption is short each time, and huge pressure is brought to maintenance work.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, one of the purposes of the invention is to provide a DC porcelain insulator zinc band, a DC porcelain insulator, an installation tool and an installation method thereof.
The direct-current porcelain insulator zinc band is embedded in an annular gap between a steel cap and a porcelain skirt of the direct-current porcelain insulator, and a groove which extends along the long side direction of the zinc band and is sleeved with a rope to tighten the zinc band in the annular gap in the annular direction is formed in one side of the zinc band, which is away from the annular gap.
Further, a wedge-shaped guide part which is convenient to insert into the annular gap is formed on one side of the zinc belt facing the annular gap in an extending manner.
Further, the central angle of an open ring body formed after the zinc strip is embedded into the annular gap is 335-350 degrees, and corona-proof chucks are formed at the two ends of the open ring body in an extending mode.
Further, the zinc belt is composed of a semicircular ring section and an arc section which are sequentially and smoothly connected, and the radius of the semicircular ring section is smaller than that of the arc section and is matched with the annular gap.
The zinc strip is embedded in an annular gap between a steel cap and a porcelain skirt of the direct-current porcelain insulator.
The tool for installing the zinc strip comprises a frame, wherein a first ejector rod and a second ejector rod are arranged at the front end of the frame side by side, a winch is further arranged on the frame, one end of a rope is wound on a winding drum of the winch, the other end of the rope extends out of the front end of the first ejector rod through a rope channel in the first ejector rod and is connected with a hook, and one end of the rope provided with the hook can be pulled out of the rope channel to be embedded into the groove and is connected with a hanging ring arranged at the front end of the second ejector rod.
Furthermore, the hooks adopt magnetic hooks.
Further, a pair of guide rollers are provided in the rope passage, and the rope passes between the pair of guide rollers.
Further, the winch comprises a winding drum, a motor for driving the winding drum to rotate through a linkage device, a battery for supplying power to the motor and a trigger for controlling the motor to be started and stopped, a handle convenient to hold is arranged on the frame, and a handle convenient to hold is arranged on the frame.
A method for installing a zinc band of a direct-current porcelain insulator includes the steps of pressing one end of the zinc band against an annular gap between a steel cap and a porcelain skirt of the direct-current porcelain insulator by means of a first ejector rod of a tool, keeping the end at the opposite side of a leakage current dense area of the direct-current porcelain insulator, withdrawing a rope, encircling the zinc band by taking a groove of the zinc band as a track for one circle, hooking a hook of an end of the rope into a hanging ring, starting a winch, driving the zinc band to tighten in an annular direction through the rope, and embedding the zinc band into the annular gap between the steel cap and the porcelain skirt of the direct-current porcelain insulator to complete installation of the zinc band.
Compared with the prior art, the invention has the beneficial effects that:
1. the zinc band is provided with the track groove, the zinc band is annularly tightened by the rope embedded in the groove to be embedded in the annular gap, so that the installation of the zinc band can be completed, and the zinc band can be suitable for steel caps of insulators of different models of different manufacturers.
2. After the zinc strip is installed, the effective angle of the zinc strip is more than or equal to 335 degrees and less than or equal to 350 degrees, the opening angle is small, dropping caused by factors such as dead weight, wind vibration and the like is avoided, and the safety performance is improved.
3. The zinc band mounting tool is used for mounting, so that later falling caused by overlarge opening of a zinc ring can be avoided, the mounting efficiency can be improved, the physical consumption of operators can be reduced, more misplaced products can be avoided, and the use amount of a die can be reduced.
4. The zinc band is provided with the track grooves, so that later installation is facilitated, and the corona prevention chucks are arranged at the two ends, so that corona discharge is reduced, convenience is brought to installation, fixing of the end is facilitated, and sliding is avoided; secondly, the fulcrum is higher when the zinc belt is tightened, so that the other end of the zinc belt is convenient to tighten.
Drawings
FIG. 1 is a schematic view of the structure of a zinc strip of the present invention;
FIG. 2 is a schematic cross-sectional view of a zinc strip of the present invention;
FIG. 3 is a schematic view of the zinc strip of the present invention installed in an annular gap;
FIG. 4 is a schematic view of the construction of the zinc band installation tool of the present invention;
FIG. 5 is a side view of the zinc band installation tool of the present invention;
fig. 6 is a schematic view of the zinc strip installation process of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, a zinc band of a direct current porcelain insulator is embedded in an annular gap 1 between a steel cap and a porcelain skirt of the direct current porcelain insulator, and a groove 3 which extends along the long side direction of the zinc band 2 and is sleeved with a rope to tighten the zinc band 2 in the annular direction so as to be embedded in the annular gap 1 is arranged on one side of the zinc band 2 away from the annular gap.
When the zinc strip 1 is installed, the rope is embedded in the groove 3, two ends of the rope penetrate out from two ends of the zinc strip 2, one end of the zinc strip 2 is tightly propped against the annular gap 1, two ends of the rope are tensioned, the zinc strip 2 is embedded into the gap along the annular gap 1, the installation of the zinc strip can be completed, the installation of the zinc strip 2 is convenient, and the zinc strip is suitable for steel caps of insulators of different models of different manufacturers.
Referring to fig. 2, in order to facilitate the insertion of the zinc tape 2 into the annular gap 1, a wedge-shaped guide portion 4 is formed on the side of the zinc tape 2 facing the annular gap 1 to facilitate the insertion into the annular gap, and the wedge-shaped guide portion 4 is integrally formed with the zinc tape body.
Referring to fig. 3, the zinc band 2 is composed of a semicircular segment 201 and an arc segment 202 which are sequentially and smoothly connected, the radius of the semicircular segment 201 is smaller than that of the arc segment 201 and is matched with the annular gap 1, and the semicircular segment 201 matched with the annular gap 1 is arranged, so that the semicircular segment 201 can be manually matched with the annular gap 1 in a sleeve manner when the zinc band 2 is installed, initial positioning is provided for the zinc band 2, and the later zinc band 1 can be conveniently folded and tensioned towards the ring through a rope ring.
Specifically, the zinc belt 2 is made by one-step stamping with No. 0 zinc wire, and has a central angle equal to θ 1 A semicircular ring segment with the degree, the radius of R1 and the arc length of L1 and a central angle equal to theta 2 The degree, radius are 3R1, arc length is L2 with the structure, with the cross-section, with the material circular arc section an organic whole constitute, zinc ring cross section is the toper form, and the gap between insulator steel cap and the porcelain skirt can conveniently be inserted to awl point one side, and zinc band outer fringe side is provided with the recess. In the embodiment, the central angle of the open ring body formed by embedding the zinc strip 2 into the annular gap 1 is 335-350 DEG, theta 1 The opening angle of the installed zinc belt is small, dropping caused by dead weight, wind vibration and other factors is avoided, the safety performance is improved, and the approximate full sealing of the zinc belt is realized.
Referring to fig. 1, two ends of a zinc strip are provided with anticorona chucks 203, the outer edges of the chucks 203 are semicircular, the radius is r=4mm, the circle center is located on the outer edge of the zinc strip, the outer edges of the chucks 203 are also provided with chuck grooves which are in smooth transition communication with grooves on the zinc strip, the depth of the chuck grooves is smaller than that of the grooves on the zinc strip, the depth difference is h=0.3mm, that is, a certain height difference exists at the joint of the two grooves, and the two grooves are in smooth transition connection.
The zinc-plated tape is provided with the track groove to facilitate later installation, and the corona-proof chuck 203 is arranged at two ends, so that on one hand, corona discharge is reduced, on the other hand, convenience is brought to installation, on one hand, the fixing of the end A is facilitated, sliding is avoided, on the other hand, the fulcrum is higher when the end B is tightened, and the end B of the zinc-plated tape is convenient to tighten.
Referring to fig. 4 and 5, a tool for installing the zinc strip comprises a frame 5, wherein a first ejector rod 6 and a second ejector rod 7 are arranged at the front end of the frame 5 side by side, a winch 8 is further arranged on the frame 5, one end of a rope 9 is wound on a winding drum 801 of the winch 8, the other end of the rope 9 extends out of the front end of the first ejector rod 6 through a rope channel in the first ejector rod 6 and is connected with a hook 10, and one end of the rope 9 provided with the hook 10 can be pulled out of the rope channel to be embedded into a groove 3 and is connected with a hanging ring 11 arranged at the front end of the second ejector rod 7.
A pair of guide rollers 12 are provided in the rope passage, and the rope 9 passes between the pair of guide rollers 12, and the rope 9 is guided tangentially to the surface of the guide rollers 12.
Referring to fig. 4 and 5, in practical design, the winding engine 8 includes a winding drum 801, a motor 803 driving the winding drum to rotate through a linkage 802, a battery 804 supplying power to the motor 803, and a trigger 806 controlling the on/off of the motor 804, where a controller 805 is further provided on the frame 5, and the trigger 806, the controller 805, the battery 804 and the motor 803 are electrically connected to form a control circuit controlling the on/off of the winding engine, and the specific structure of the control circuit is a conventional technology in the electric control field and will not be described herein. In this embodiment, the battery 804 supplies power to the motor through the controller 805, the controller is connected with the trigger, the trigger 806 is fastened and unfastened to realize the opening and closing of the controller 805 and further realize the on-off of the power supply, the motor is connected with the winding drum (steel cable winding and unwinding wheel) through the linkage, the motor drives the steel cable winding and unwinding wheel to realize the automatic retraction of the rope (preferably adopting the steel cable) through the linkage under the condition of power supply on, and the hand-pulled hook (preferably adopting the magnetic hook) or the front end of the steel cable can realize the unfolding and the unwinding of the steel cable under the condition of power supply off, and the rack 5 is further provided with the handle 13 which is convenient to hold and the setting position of which meets the ergonomic principle.
Referring to fig. 4-6, a method for installing a zinc band of a direct current porcelain insulator comprises the following steps:
1) Manually sleeving a semicircular section 201 of the zinc band 2 into a gap 1 between a steel cap and a porcelain skirt of the direct current porcelain insulator to be installed, and keeping an end A at the opposite side of a leakage current dense region of the direct current porcelain insulator, namely if the direct current porcelain insulator is a horizontal string which is arranged in a tension-resistant manner, the end A is arranged at the upper side, and then the zinc band 2 is penetrated into the part to be installed from left to right;
2) The first ejector rod 6 of the zinc belt installation tool is tightly pressed against the end A, an anticorona chuck at the end A is arranged between the first ejector rod 6 and the second ejector rod 7 and is abutted against the inner side wall of the first ejector rod 6, a steel cable is drawn out, the groove 3 of the zinc belt 2 is taken as a track to encircle the zinc belt 2 for a circle, and a magnetic hook at the end of the steel cable is hooked into the hanging ring 11;
3) The hand-operated light trigger 806 can be used to adjust the steel cable to be completely in the groove 3 of the zinc ring and in a stress state;
4) The trigger 806 is continuously fastened, the zinc band 2 is tightened, the trigger 806 is loosened when the end B and the end A are positioned in the same circular ring, and at the moment, the steel rope is manually pulled outwards and the magnetic hook is taken down, so that the installation of the zinc band 2 is completed.
By using the zinc strip mounting tool, personnel operation on a tower is facilitated, labor intensity is reduced, the problems of unsmooth manual clamping and mounting and the like are avoided, working efficiency is improved, more delivery errors due to more models can be avoided, and the using amount of a die is reduced.
The above examples are only illustrative of the invention and are not intended to be limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. Nor is it necessary or impossible to exhaust all embodiments herein. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (8)
1. The utility model provides a DC porcelain insulator zinc area inlays in the annular gap between DC porcelain insulator steel cap and skirt, its characterized in that: a groove which extends along the long side direction of the zinc belt and is sleeved with a rope to tighten the zinc belt in the annular gap in the annular direction is formed in one side of the zinc belt away from the annular gap;
the zinc belt consists of a semicircular ring section and an arc section which are sequentially and smoothly connected, and the radius of the semicircular ring section is smaller than that of the arc section and is matched with the annular gap;
one side of the zinc belt facing the annular gap is epitaxially formed with a wedge-shaped guide portion which is convenient to insert into the annular gap.
2. The zinc strip of claim 1, wherein: the central angle of the open ring body formed after the zinc strip is embedded into the annular gap is 335-350 degrees.
3. The zinc strip of claim 1, wherein: and corona-proof chucks are formed at the two ends of the zinc belt in an extending manner.
4. The utility model provides a direct current porcelain insulator which characterized in that: the zinc strip of any one of claims 1-3 is embedded in an annular gap between a steel cap and a skirt of a direct current porcelain insulator.
5. A tool for installing the zinc strip of any one of claims 1-3, comprising a frame, characterized in that: the front end of the frame is provided with a first ejector rod and a second ejector rod side by side, the frame is also provided with a winch, one end of a rope is wound on a winding drum of the winch, the other end of the rope extends out of the front end of the first ejector rod through a rope channel in the first ejector rod and is connected with a hook, and one end of the rope provided with the hook can be pulled out of the rope channel to be embedded into the groove and is connected with a hanging ring arranged at the front end of the second ejector rod.
6. The tool according to claim 5, wherein: the rope channel is provided with a pair of guide rollers, and the rope passes between the guide rollers.
7. The tool according to claim 5, wherein: the winch comprises a winding drum, a motor for driving the winding drum to rotate through a linkage, a battery for supplying power to the motor and a trigger for controlling the motor to be started and stopped.
8. A method for installing a zinc strip of a direct current porcelain insulator by using the tool as claimed in any one of claims 5 to 7, characterized in that: one end of the zinc belt is tightly pressed against an annular gap between the direct-current porcelain insulator steel cap and the porcelain skirt by utilizing a first ejector rod of the tool, the end is kept at the opposite side of the direct-current porcelain insulator leakage current dense region, a rope is pulled out, a groove of the zinc belt is taken as a track to encircle the zinc belt for one circle, a hook of the rope end is hooked into a hanging ring, a winch is started, the zinc belt is driven to be tightened in an annular direction by the rope, and the zinc belt is embedded into the annular gap between the direct-current porcelain insulator steel cap and the porcelain skirt, so that the installation of the zinc belt is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910297627.0A CN109903937B (en) | 2019-04-15 | 2019-04-15 | DC porcelain insulator zinc band, DC porcelain insulator, and mounting tool and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910297627.0A CN109903937B (en) | 2019-04-15 | 2019-04-15 | DC porcelain insulator zinc band, DC porcelain insulator, and mounting tool and mounting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109903937A CN109903937A (en) | 2019-06-18 |
| CN109903937B true CN109903937B (en) | 2024-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910297627.0A Active CN109903937B (en) | 2019-04-15 | 2019-04-15 | DC porcelain insulator zinc band, DC porcelain insulator, and mounting tool and mounting method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN109903937B (en) |
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|---|---|---|---|---|
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| JP2001243845A (en) * | 2000-02-28 | 2001-09-07 | Hitachi Cable Ltd | Wind noise dampening insulator |
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| CN208157165U (en) * | 2018-05-24 | 2018-11-27 | 中国葛洲坝集团电力有限责任公司 | A kind of double bolt formula zinc ring of DC power transmission line porcelain insulator |
| CN208460504U (en) * | 2018-07-29 | 2019-02-01 | 中国电建集团河南电力器材有限公司 | One kind being used for insulator cap corrosion-resistant zinc ring |
| CN209447627U (en) * | 2019-04-15 | 2019-09-27 | 国网湖南省电力有限公司 | A kind of Direct-current porcelain insulator zinc band, Direct-current porcelain insulator and its installation tool |
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2019
- 2019-04-15 CN CN201910297627.0A patent/CN109903937B/en active Active
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