CN116845768A - A method for grounding high-voltage overhead transmission lines - Google Patents
A method for grounding high-voltage overhead transmission lines Download PDFInfo
- Publication number
- CN116845768A CN116845768A CN202310671228.2A CN202310671228A CN116845768A CN 116845768 A CN116845768 A CN 116845768A CN 202310671228 A CN202310671228 A CN 202310671228A CN 116845768 A CN116845768 A CN 116845768A
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- China
- Prior art keywords
- grounding
- wire clamp
- ground wire
- locking
- insulating tube
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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- Electric Cable Installation (AREA)
Abstract
The invention discloses a grounding method for a high-voltage overhead power transmission line ground wire, which is used for realizing the reliable grounding of equipment for safely, rapidly and simply completing an operation area in the process of grounding wire contact operation in the power transmission line maintenance operation. Firstly, fixing the grounding end of a grounding rod on an iron tower to ensure good grounding, then enabling a movable clamping block to slide, and opening a wire clamp clamping port; the wire clamp is rotated, so that the wire clamp opening faces to the direction easy to install, and the locking nut is rotated to enable the positioning pin to be separated from the positioning groove; the fixing sleeve is rotated to enable the wire clamp to rotate in the direction taking the locking bolt as an axis, so that the direction easy to install on site is achieved, and the locking nut is rotated to enable the positioning pin to be clamped into the positioning groove on the locking sleeve; the wire clamp is placed on the overhead ground wire, the opening direction is adjusted to enable the clamping opening to be clamped on the overhead ground wire, after the wire clamp is clamped on the ground wire, the insulating tube is rotated, and under the drive of the chain, the universal nut pushes the movable wire clamp to move until the wire clamp is clamped on the overhead ground wire.
Description
The present invention is based on the patent application of China patent No. 2018113431263 filed by the applicant on the date of 2018, 11 and 13, and the patent name of the patent application is an overhead transmission line ground wire universal grounding rod, at least part of the content of the original specification is incorporated by reference.
Technical Field
The invention belongs to the technical field of power engineering, and particularly relates to an overhead power transmission line ground wire grounding rod and a use method thereof, which are mainly applicable to the grounding of a high-voltage overhead power transmission line ground wire.
Background
The power industry is basic industry and public utility for supporting national economy and social development, and along with the rapid development of national economy and continuous improvement of the living standard of people, the dependence on power is higher and higher. Therefore, the security of the power grid is an important guarantee for the security of the power grid, and the security of the power transmission line is an important guarantee for the national life of the power grid. In order to ensure the safety and stability of the power transmission equipment, the equipment must be overhauled, eliminated and hidden danger is eliminated strictly according to regulations. For the operation of 500KV and above overhead transmission lines contacting with the ground wire, effective grounding of the overhead ground wire is a reliable technical means for guaranteeing personal safety and avoiding induction electric accidents.
The ground wire shorting mode widely used in operation at present adopts 10kV ground rod to replace ground wire ground rod, and when in use, the ground wire clamp is fixed on the insulating ground wire through the rotation of an insulating tube by an operator, and because the ground rod clamp body cannot rotate and cannot guarantee that the insulating tube is perpendicular to the ground wire, and because of the existence of a ground wire insulator, the insulating tube and the ground wire have a certain angle when the operator operates on an overhead cross arm, so that the clamp cannot be firmly clamped on the ground wire, poor contact between the clamp and the conductor often occurs, the clamp slides down or induction discharge is generated between the conductor and the clamp, the clamp and the ground wire are burnt out, and the wire clamp is damaged even personal electric shock accidents are caused by induction during long-time operation. The purpose of ensuring the operation safety cannot be achieved. When in operation, under the condition of larger distance, operators are required to stretch out of the cross arm, the operation difficulty is high, and the danger coefficient is high.
The ground wire grounding mode is high in technical difficulty, time and labor are consumed, working procedures are complex, operation planning is seriously influenced, working efficiency is reduced, and operation safety cannot be guaranteed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a grounding method for the high-voltage overhead transmission line ground wire, which enables a wire clamp to be firmly clamped on the ground wire, reduces the technical difficulty of grounding, improves the working efficiency and ensures the operation safety.
In order to solve the technical problems, the invention adopts the following technical scheme:
the grounding rod comprises an insulating tube, a joint seat fixed at the head end of the insulating tube, a locking sleeve fixed with the joint seat, a fixed sleeve rotationally connected with the locking sleeve, a fixed wire clamp with a clamping opening, a movable clamping block arranged in the clamping opening, and a universal nut connected with the movable clamping block, wherein the universal nut is rotationally connected with the fixed sleeve, the universal nut is driven by the insulating tube to rotate and drives the movable clamping block to move during rotation, the fixed sleeve is provided with a horizontal part and an axial extension part connected with the horizontal part and axially extending towards the insulating tube, the universal nut movably penetrates through the horizontal part, the axial extension part is connected with the locking sleeve through a locking bolt and a locking nut, the locking nut can rotate around the locking bolt after unscrewing, the locking nut is screwed tightly, the fixed sleeve is fixed with the locking sleeve, the axial extension part is connected with a positioning pin at the joint of the locking sleeve, the locking sleeve is axially provided with positioning grooves, and the universal nut is uniformly distributed at different positions between the fixed sleeve and the locking rod through the positioning pin and the locking sleeve in a jogging way, and the universal chain is also connected with the insulating tube in a uniformly distributed way;
when the grounding rod is used, the grounding end of the grounding rod is fixed on the iron tower, good grounding is guaranteed, then the movable clamping block slides, and the wire clamp clamping opening is opened;
the wire clamp is rotated, so that the wire clamp opening faces to the direction easy to install, and the locking nut is rotated to enable the positioning pin to be separated from the positioning groove;
the fixing sleeve is rotated to enable the wire clamp to rotate in the direction taking the locking bolt as an axis, so that the direction easy to install on site is achieved, and the locking nut is rotated to enable the positioning pin to be clamped into the positioning groove on the locking sleeve;
placing the wire clamp on an overhead ground wire, adjusting the opening direction to clamp the clamp on the overhead ground wire, rotating the insulating tube after the wire clamp is clamped on the ground wire, and driving the universal nut to push the movable wire clamp to move under the driving of the chain until the wire clamp is clamped on the overhead ground wire;
after the work is finished, the insulating tube is rotated, under the transmission action of the chain, the universal nut drives the movable clamping block to move, so that the wire clamp clamped on the ground wire is loosened until the wire clamp body can be taken down from the overhead ground wire, then the grounding end is taken down, and the whole work is finished.
According to the technical scheme, the wire clamp can rotate around the universal nut, the fixing sleeve and the locking sleeve can also rotate relatively, when the wire clamp is used, the relative angle between the wire clamp and the insulating tube is selected according to the distance and the angle between the overhead ground wire and the cross arm of the operation site, the opening of the wire clamp can face any direction, and the use requirements of various operation sites are met.
Therefore, the method for grounding the ground wire of the high-voltage overhead power transmission line is quick, effective, safe and reliable, so that equipment which is used for safely, quickly and simply completing an operation area in the process of contacting the ground wire in the process of overhauling the power transmission line can be reliably grounded, and reliable safety guarantee is provided for overhauling operation.
Preferably, the two ends of the connector seat are respectively provided with a small-diameter cylinder part and a large-diameter cylinder part which are connected with each other, the locking sleeve is rotationally connected to the outer side of the small-diameter cylinder part, and the large-diameter cylinder part is rotationally connected to the head end of the insulating tube.
Preferably, the locking sleeve is fixed with the joint seat through a set screw.
Preferably, the large diameter cylindrical portion and the insulating tube are fixed by an elastic cylindrical pin.
Preferably, the universal nut is provided with a U-shaped clamping opening extending towards the head of the insulating tube, a fixing bolt is connected between two side walls of the U-shaped clamping opening, one end of the chain is connected with the elastic cylindrical pin, and the other end of the chain is connected with the fixing bolt.
Preferably, the insulating tube is connected with a rubber hand guard.
The specific technical scheme and the beneficial effects of the invention are described in detail in the following detailed description with reference to the accompanying drawings.
Drawings
The invention is further described with reference to the drawings and detailed description which follow:
FIG. 1 is a schematic diagram of the outline structure of the present invention;
fig. 2 is a schematic cross-sectional view of the present invention.
Detailed Description
Referring to fig. 1 and 2, an overhead transmission line ground wire universal grounding rod comprises an insulating tube 15, a connector seat 16 fixed at the head end of the insulating tube, a locking sleeve 12 fixed with the connector seat 16, a fixed sleeve 4 rotationally connected with the locking sleeve 12, a fixed wire clamp 1 with a clamping opening, a movable clamping block 8 arranged in the clamping opening, and a universal nut 2 connected with the movable clamping block 8, wherein the universal nut 2 is rotationally connected with the fixed sleeve 4, the universal nut 2 is driven by the insulating tube 15 to rotate and converts rotation into linear movement through a screw thread matched structure when rotating, so that the movable clamping block 8 is driven to move, or the ground wire is locked by matching with the fixed wire clamp, or the ground wire is loosened, and a circumferential positioning structure is arranged between the locking sleeve 12 and the fixed sleeve 4 so as to fix a position after the locking sleeve 12 and the fixed sleeve 4 relatively rotate.
The wire clamp can rotate around the universal nut 2 under the action of external force, and meanwhile, the locking sleeve 12 and the fixing sleeve 4 can rotate relatively, so that the opening of the wire clamp can face any direction through free rotation in two axial directions, and when the wire clamp is used, the relative angle between the fixed wire clamp 1 and the insulating tube 15 is selected according to the distance and the angle between the overhead ground wire and the cross arm in the operation site, so that the requirements of all operation conditions are met. The invention has the characteristics of light weight, flexible operation, high operation efficiency, wide application range, convenient carrying, high safety and the like, effectively reduces the labor intensity of operators, ensures the safety of the operators and equipment, saves manpower and material resources and meets the use requirements of various operation sites. When the insulating tube 15 is rotated by an operator, the universal nut 2 is driven to rotate, so that the movable clamping block 8 moves forwards or backwards, and the purpose of clamping or loosening the ground wire is achieved.
The fixing sleeve 4 is provided with a horizontal part and an axial extension part which is connected with the horizontal part and axially extends towards the insulating tube, the universal nut 2 movably penetrates through the horizontal part, the circumferential positioning structure comprises a locking bolt 6 and a locking nut 7, the axial extension part is connected with the locking sleeve 12 through the locking bolt 6 and the locking nut 7, the tightness degree of the fixing sleeve 4 and the locking sleeve 12 can be adjusted through the rotation of the locking nut 7, the fixing sleeve 4 can be rotated around the locking bolt 6 after the locking nut is unscrewed, the fixing sleeve 4 and the locking sleeve 12 are fixed after the locking nut 7 is screwed, and different relative positions between the fixing sleeve 4 and the locking sleeve 12 are achieved. The lock nut 7 may be a wing nut to facilitate manual tightening or loosening.
The circumferential positioning structure further comprises a positioning pin 5, the joint of the axial extension part and the locking sleeve 12 is connected with the positioning pin 5, positioning grooves are uniformly distributed on the locking sleeve 12 along the axial direction, and the fixing sleeve 4 and the locking sleeve 12 are fixed at different relative positions through the jogging of the positioning pin and different positioning grooves on the locking sleeve.
The two ends of the connector base 16 are respectively provided with a small-diameter cylinder part and a large-diameter cylinder part which are connected with each other, the locking sleeve 12 is rotatably connected to the outer side of the small-diameter cylinder part, and the large-diameter cylinder part is rotatably connected to the head end of the insulating tube. The locking sleeve 12 is fixed with the joint seat 16 through the set screw 14. The position between the joint seat 16 and the locking sleeve 12 is adjusted by the set screw 14 on the locking sleeve 12, so that the circle center of the joint seat is ensured to coincide with the circle center of the locking sleeve 12. The large diameter cylindrical portion and the insulating tube 15 are fixed by the elastic cylindrical pin 10.
The universal grounding rod further comprises a connecting insulating tube 15 and a chain 13 of the universal nut 2, one end of the universal nut 2 is provided with a U-shaped clamping opening extending towards the head of the insulating tube, a fixing bolt 11 is connected between two side walls of the U-shaped clamping opening, one end of the chain is connected with the elastic cylindrical pin 10, and the other end of the chain is connected with the fixing bolt 11. The connection mode of the chain 13 and the fixing bolt 11 is adopted, so that the insulation pipe can be guaranteed to rotate to drive the universal nut to rotate, and the fixing sleeve 4 is allowed to rotate around the locking bolt 6. In addition, the insulating tube 15 is connected with a rubber hand guard 17 for the operator to hold.
When the device is used, the grounding end of the grounding rod is fixed on the iron tower, good grounding is guaranteed, an operator rotates the rubber hand guard 17 to enable the movable clamping block 8 to slide during use, the wire clamp clamping opening is opened, the wire clamp is rotated, the wire clamp clamping opening faces the direction easy to install, the locking nut 7 is rotated to enable the locating pin 5 to be separated from the locating groove, the fixing sleeve 4 is rotated to enable the wire clamp to rotate in the direction taking the locking bolt 6 as the shaft, the direction easy to install on site is achieved, the locking nut 7 is rotated, and the locating pin 5 is clamped into the locating groove on the locking sleeve 12. The operator holds the rubber hand guard 17 and puts the fastener on the overhead ground wire, adjusts the opening direction and makes the clamp mouth card on the overhead ground wire, after the fastener card is on the ground wire, rotates insulating tube 15 through the rubber hand guard 17, under the drive of chain 13, universal nut 2 promotes movable fastener 8 and removes, until pressing from both sides the fastener on the overhead ground wire. After the work is finished, the insulating tube 15 is rotated through the rubber hand guard 17, under the transmission action of the chain 13, the universal nut 2 drives the movable clamping block 8 to move, so that the wire clamp clamped on the ground wire is loosened until the wire clamp body can be taken down from the overhead ground wire. And then the grounding end is taken down, and the whole work is completed.
By adopting the technical scheme, the invention has the beneficial effects that:
1. the invention has the advantages of convenient carrying, light weight, simple operation and wide application range;
2. the invention designs a mounting mode of the wire clamp rotation, and meets the grounding condition of all overhead ground wires involved in the current production;
3. the invention shortens the operation time and reduces the labor intensity;
4. in design and manufacture, the possible adverse conditions in operation are avoided, and the rapid operation is realized.
While the invention has been described in terms of specific embodiments, it will be appreciated by those skilled in the art that the invention is not limited to the specific embodiments described above. Any modifications which do not depart from the functional and structural principles of the present invention are intended to be included within the scope of the appended claims.
Claims (6)
1. The grounding rod comprises an insulating tube, a joint seat fixed at the head end of the insulating tube, a locking sleeve fixed with the joint seat, a fixed sleeve rotationally connected with the locking sleeve, a fixed wire clamp with a clamping opening, a movable clamping block arranged in the clamping opening, and a universal nut connected with the movable clamping block, wherein the universal nut is rotationally connected with the fixed sleeve, the universal nut is driven by the insulating tube to rotate and drives the movable clamping block to move when rotating, the fixed sleeve is provided with a horizontal part and an axial extension part connected with the horizontal part and axially extending towards the insulating tube, the universal nut movably penetrates through the horizontal part, the axial extension part is connected with the locking sleeve through a locking bolt and a locking nut, the locking nut can rotate around the locking bolt after being unscrewed, the locking nut fixes the fixed sleeve with the locking sleeve, the axial extension part is connected with a positioning pin at the locking sleeve, the locking sleeve is axially provided with a positioning groove, and the universal nut is uniformly distributed with the locking sleeve through the jogging of different positioning grooves on the locking sleeve, so that the fixed sleeve and the insulating tube are fixedly connected with the insulating tube in different positions, and the grounding rod also comprises the universal nut;
when the grounding rod is used, the grounding end of the grounding rod is fixed on the iron tower, good grounding is guaranteed, then the movable clamping block slides, and the wire clamp clamping opening is opened;
the wire clamp is rotated, so that the wire clamp opening faces to the direction easy to install, and the locking nut is rotated to enable the positioning pin to be separated from the positioning groove;
the fixing sleeve is rotated to enable the wire clamp to rotate in the direction taking the locking bolt as an axis, so that the direction easy to install on site is achieved, and the locking nut is rotated to enable the positioning pin to be clamped into the positioning groove on the locking sleeve;
placing the wire clamp on an overhead ground wire, adjusting the opening direction to clamp the clamp on the overhead ground wire, rotating the insulating tube after the wire clamp is clamped on the ground wire, and driving the universal nut to push the movable wire clamp to move under the driving of the chain until the wire clamp is clamped on the overhead ground wire;
after the work is finished, the insulating tube is rotated, under the transmission action of the chain, the universal nut drives the movable clamping block to move, so that the wire clamp clamped on the ground wire is loosened until the wire clamp body can be taken down from the overhead ground wire, then the grounding end is taken down, and the whole work is finished.
2. The high-voltage overhead transmission line ground wire grounding method according to claim 1, wherein the method comprises the following steps: the two ends of the connector seat are respectively provided with a small-diameter cylinder part and a large-diameter cylinder part which are connected with each other, the locking sleeve is rotationally connected to the outer side of the small-diameter cylinder part, and the large-diameter cylinder part is rotationally connected to the head end of the insulating tube.
3. The high-voltage overhead transmission line ground wire grounding method according to claim 2, wherein the method comprises the following steps: the locking sleeve is fixed with the joint seat through a fastening bolt.
4. The high-voltage overhead transmission line ground wire grounding method according to claim 2, wherein the method comprises the following steps: the large-diameter cylindrical part is fixed with the insulating tube through an elastic cylindrical pin.
5. The high-voltage overhead transmission line ground wire grounding method according to claim 1, wherein the method comprises the following steps: the universal nut is provided with a U-shaped clamping opening extending towards the head of the insulating tube, a fixing bolt is connected between two side walls of the U-shaped clamping opening, one end of the chain is connected with the elastic cylindrical pin, and the other end of the chain is connected with the fixing bolt.
6. The high-voltage overhead transmission line ground wire grounding method according to claim 1, wherein the method comprises the following steps: the insulating tube is connected with a rubber hand protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310671228.2A CN116845768B (en) | 2018-11-13 | 2018-11-13 | Grounding method for high-voltage overhead transmission line ground wire |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310671228.2A CN116845768B (en) | 2018-11-13 | 2018-11-13 | Grounding method for high-voltage overhead transmission line ground wire |
| CN201811343126.3A CN109361172B (en) | 2018-11-13 | 2018-11-13 | A kind of overhead transmission line ground wire universal grounding rod |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811343126.3A Division CN109361172B (en) | 2018-11-13 | 2018-11-13 | A kind of overhead transmission line ground wire universal grounding rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116845768A true CN116845768A (en) | 2023-10-03 |
| CN116845768B CN116845768B (en) | 2026-07-14 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811343126.3A Active CN109361172B (en) | 2018-11-13 | 2018-11-13 | A kind of overhead transmission line ground wire universal grounding rod |
| CN202310671228.2A Active CN116845768B (en) | 2018-11-13 | 2018-11-13 | Grounding method for high-voltage overhead transmission line ground wire |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811343126.3A Active CN109361172B (en) | 2018-11-13 | 2018-11-13 | A kind of overhead transmission line ground wire universal grounding rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN109361172B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755775B (en) * | 2019-03-06 | 2023-11-10 | 国网上海市电力公司 | A retractable multi-turn line grounding wire |
| CN114530792B (en) * | 2022-03-04 | 2023-10-20 | 国网浙江省电力有限公司绍兴供电公司 | A kind of inspection robot along the ground line entering and exiting the platform track and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05284619A (en) * | 1992-03-27 | 1993-10-29 | Ngk Insulators Ltd | Automatic grounding device for power lines |
| JP2009077593A (en) * | 2007-09-21 | 2009-04-09 | Sumiden Asahi Industries Ltd | Grounding tool |
| CN101702496A (en) * | 2009-11-27 | 2010-05-05 | 山东电力集团公司超高压公司 | Anti-induced electrical grounding wire device of circuit |
| CN207069103U (en) * | 2017-06-05 | 2018-03-02 | 广东电网有限责任公司河源供电局 | A kind of rotatable multi-angle ground wire |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7019955U (en) * | 1970-05-29 | 1971-12-02 | Pfisterer Elektrotech Karl | EARTHING ROD. |
| JP2007309067A (en) * | 2006-05-15 | 2007-11-29 | Eiichi Kikuchi | Hardware for single tube of temporary building |
| JP2008148401A (en) * | 2006-12-07 | 2008-06-26 | Nagaki Seiki Co Ltd | Coupled-to-top-end tool for remote operation rod, and remote operation mounting method using the same |
| CN202423591U (en) * | 2012-01-11 | 2012-09-05 | 冯江婷 | Ground rod used on overhead transmission line |
| CR20180520A (en) * | 2016-05-02 | 2019-05-07 | Quanta Associates Lp | CLAMP WITH GROUND CONNECTION LOCK |
| CN206490196U (en) * | 2017-03-09 | 2017-09-12 | 国家电网公司 | A kind of switch cubicle inner cable head Special grounding wire |
-
2018
- 2018-11-13 CN CN201811343126.3A patent/CN109361172B/en active Active
- 2018-11-13 CN CN202310671228.2A patent/CN116845768B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05284619A (en) * | 1992-03-27 | 1993-10-29 | Ngk Insulators Ltd | Automatic grounding device for power lines |
| JP2009077593A (en) * | 2007-09-21 | 2009-04-09 | Sumiden Asahi Industries Ltd | Grounding tool |
| CN101702496A (en) * | 2009-11-27 | 2010-05-05 | 山东电力集团公司超高压公司 | Anti-induced electrical grounding wire device of circuit |
| CN207069103U (en) * | 2017-06-05 | 2018-03-02 | 广东电网有限责任公司河源供电局 | A kind of rotatable multi-angle ground wire |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109361172B (en) | 2023-09-26 |
| CN109361172A (en) | 2019-02-19 |
| CN116845768B (en) | 2026-07-14 |
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