CN110011218B - Method for replacing strain insulator string of 10kV distribution network - Google Patents
Method for replacing strain insulator string of 10kV distribution network Download PDFInfo
- Publication number
- CN110011218B CN110011218B CN201910243289.2A CN201910243289A CN110011218B CN 110011218 B CN110011218 B CN 110011218B CN 201910243289 A CN201910243289 A CN 201910243289A CN 110011218 B CN110011218 B CN 110011218B
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- insulating
- insulator string
- porcelain
- porcelain insulator
- replacing
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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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Abstract
The invention relates to a method for replacing a strain insulator string of a 10kV distribution network, which comprises an operation tool, and sequentially comprises the following steps: the method has the advantages that the method is used for detecting the operation condition of the line, installing the insulating hanger rod and the soft bag, relieving the tension of the porcelain bottle string, replacing the porcelain bottle, recovering the stress of the porcelain bottle string and the operation of equipment, and detecting the absence of remnants on the line, and has the following advantages: the insulating hanger rod in the operating tool has the advantages that the function of lifting the porcelain insulator when replacing the porcelain insulator string in an electrified mode is achieved, the purpose that operators can replace the porcelain insulator string without directly contacting electrified bodies can be achieved, the operators are far away from lines and equipment with compact 10kV gaps, the electric shock risk and the heat stress reaction of the operators are effectively reduced, the electric shock risk of distribution network live operators is fundamentally reduced, the operating efficiency and the operating safety are improved, the application range of distribution network live operations is promoted, and the power supply reliability is guaranteed.
Description
Technical Field
The invention relates to a method for replacing a strain insulator string of a 10kV distribution network.
Background
The live-wire work in China starts in the 50 th of the 20 th century, and an insulating glove work method is mainly adopted at present; in the insulating glove operation method, at least 470 accidents occurred in 26 years from 1959 to 1985, wherein 70 people died, 290 people wounded and even the live line operation of the distribution line was stopped once. At present, insulating gloves work is carried out, soft insulating shielding and a small amount of hard insulating shielding are mainly adopted to avoid accidents caused by space narrowing control, when 10KV insulating porcelain insulator string replacement work is carried out by using an insulating glove work method, a person is too close to a charged body and is in a compact power distribution framework, electric shock or electric arc burning accidents are easy to occur between phases, but certain fatigue degree is increased for the flesh and spirit of the operator due to wearing of an insulating protective tool, and meanwhile, certain hidden dangers are brought to the operator and equipment due to the compactness of the space of a domestic distribution network device.
Disclosure of Invention
The invention aims to provide a method for replacing a strain insulator string of a 10kV distribution network, and solves the technical problem of potential safety hazard of an insulating glove operation method caused by compact space of the existing domestic distribution network device.
In order to solve the technical problems, the invention is realized by the following technical scheme: the utility model provides a 10kV joins in marriage change method of net strain insulator string, includes the operation instrument, the operation instrument includes insulating jib, soft bagging-off, power draw gear, insulating turn-buckle, handheld action bars, spring catch dismouting pincers, wire holder action bars, installation couple and insulator spindle fixing-line device, the change method includes following step in proper order:
the method comprises the following steps: checking the operation condition of the line, and confirming that the line normally operates without ground fault;
step two: fixedly mounting an insulating hanger rod on a cross arm of the line which is qualified in the first step, and fixing a porcelain insulator on the insulating hanger rod after being wrapped by a soft packaging bag;
step three: the porcelain insulator string processed in the step two is not tensioned by the conducting wire through the power traction device, the insulating wire tightener and the insulating rod wire clamping device, then the porcelain insulator string is lifted up or put down through the soft bag, and in the installation process, one end of the power traction device bypasses the cross arm from bottom to top; the power traction device is fixed on the vertical surface of the cross arm, the power traction device is fixed on the cross arm through the self gravity of the power traction device, the other end of the power traction device is fixed on the insulating wire grip, the other end of the insulating wire grip is connected with the insulating rod wire grip, the power traction device is arranged on the lead through the insulating rod wire grip, and then the insulating wire grip tightens up the lead, so that the porcelain bottle string does not naturally droop under the tension of the lead;
step four: lifting the porcelain insulator string processed in the third step through an insulating hanger rod to enable the porcelain insulator to be in a state of not being subjected to tension of a lead, then pulling out a spring pin on a screw rod of the porcelain insulator string through spring pin disassembling and assembling pliers, taking out the spring pin, then unscrewing a nut through a handheld operating lever, taking out the screw rod, then taking out a strain clamp of the lead through a wire clamp operating lever, operating the insulating hanger rod to place the porcelain insulator string to a safe position, replacing an old porcelain insulator in a soft package with a new porcelain insulator by an operator, lifting the porcelain insulator to a position to be installed, and fixing the porcelain insulator string on a cross arm and the lead;
step five: loosening the conducting wire by operating the insulating wire grip to enable the porcelain insulator string to be stressed and restore the running state of equipment, then taking down the wire grip from the conducting wire, lifting up the insulating wire grip to enable the power traction device hung on the cross arm not to be stressed any more, detaching the power traction device from the cross arm by installing a hook, and taking down the soft packaging bag and the insulating suspender;
step six: and checking that no object is left on the line, recovering the normal operation of the line, and allowing the working responsible person to leave the operation area.
Preferably, whether the line normally runs in the step one is confirmed by sequentially testing electricity of the conductor, the porcelain insulator string and the cross arm by an operator, the operator is lifted to a working position by the insulating bucket arm vehicle when testing the electricity, and the distance between the working position and the line is 0.65-0.75 m.
Preferably, the soft bag is made of elastic insulating cloth and is detachably mounted on the porcelain bottle through insulating tweezers.
Preferably, the insulating suspender is provided with a hook for fixing the soft packaging bag, one end of the soft packaging bag is fixed on the hook during installation, and the other end of the soft packaging bag is upwards wrapped around the porcelain bottle string from the lower side of the porcelain bottle and fixed on the hook.
Preferably, the soft bag is provided with a hanging ring matched with the hook, and the hanging ring and the soft bag are integrally formed.
Preferably, the operating tool further comprises a vice, and the screw rod in the fourth step is pulled out through the vice.
Preferably, the replacing method further comprises a placing box, and the operating tool is arranged in the placing box.
In conclusion, the invention has the advantages that: the function of hoisting the porcelain insulator when replacing the porcelain insulator string in an electrified way is realized by the insulating suspender in the operation tool, and in the hoisting process in the step two, the packaging of the porcelain insulator is realized through the soft packaging bag, the porcelain insulator is not injured and does not slip off in the lifting process, the service life of the porcelain insulator is prolonged, the falling of the porcelain insulator is reduced, the original tension of the porcelain insulator is relieved through the power traction device in the third step, the tension of the lead and the fixed position are not changed when the porcelain insulator string is replaced, meanwhile, the porcelain insulator string is not stressed, the porcelain insulator string can be smoothly replaced, the purpose that the porcelain insulator string can be replaced by an operator without directly contacting a charged body can be achieved, the operator is far away from lines and equipment with compact 10KV gaps, the electric shock risk and the heat stress reaction of the operator are effectively reduced, the electric shock risk of the distribution network live operator is fundamentally reduced, the operation efficiency and the operation safety are improved, the application range of the distribution network live operation is promoted, and the power supply reliability is ensured.
Detailed Description
The utility model provides a 10kV joins in marriage change method of net strain insulator string, includes the operation instrument, the operation instrument includes insulating jib, soft bagging-off, power draw gear, insulating turn-buckle, handheld action bars, spring catch dismouting pincers, wire holder action bars, installation couple and insulator spindle fixing-line device, the change method includes following step in proper order:
the method comprises the following steps: checking the operation condition of the line, and confirming that the line normally operates without ground fault;
step two: fixedly mounting an insulating hanger rod on a cross arm of the line which is qualified in the first step, and fixing a porcelain insulator on the insulating hanger rod after being wrapped by a soft packaging bag;
step three: the porcelain insulator string processed in the step two is not tensioned by the conducting wire through the power traction device, the insulating wire tightener and the insulating rod wire clamping device, then the porcelain insulator string is lifted up or put down through the soft bag, and in the installation process, one end of the power traction device bypasses the cross arm from bottom to top; the power traction device is fixed on the vertical surface of the cross arm, the power traction device is fixed on the cross arm through the self gravity of the power traction device, the other end of the power traction device is fixed on the insulating wire grip, the other end of the insulating wire grip is connected with the insulating rod wire grip, the power traction device is arranged on the lead through the insulating rod wire grip, and then the insulating wire grip tightens up the lead, so that the porcelain bottle string does not naturally droop under the tension of the lead;
step four: lifting the porcelain insulator string processed in the third step through an insulating hanger rod to enable the porcelain insulator to be in a state of not being subjected to tension of a lead, then pulling out a spring pin on a screw rod of the porcelain insulator string through spring pin disassembling and assembling pliers, taking out the spring pin, then unscrewing a nut through a handheld operating lever, taking out the screw rod, then taking out a strain clamp of the lead through a wire clamp operating lever, operating the insulating hanger rod to place the porcelain insulator string to a safe position, replacing an old porcelain insulator in a soft package with a new porcelain insulator by an operator, lifting the porcelain insulator to a position to be installed, and fixing the porcelain insulator string on a cross arm and the lead;
step five: loosening the conducting wire by operating the insulating wire grip to enable the porcelain insulator string to be stressed and restore the running state of equipment, then taking down the wire grip from the conducting wire, lifting up the insulating wire grip to enable the power traction device hung on the cross arm not to be stressed any more, detaching the power traction device from the cross arm by installing a hook, and taking down the soft packaging bag and the insulating suspender;
step six: and checking that no object is left on the line, recovering the normal operation of the line, and allowing the working responsible person to leave the operation area.
Whether the circuit normally runs or not is confirmed by sequentially testing electricity of the operating personnel on the wire, the porcelain insulator string and the cross arm, the operating personnel is lifted to a working position through the insulating bucket arm vehicle when testing electricity, the distance between the working position and the circuit is 0.7m, the purpose that the porcelain insulator string can be replaced by the operating personnel without directly contacting with an electrified body can be achieved, and safety performance is improved.
The soft bag is prepared from elastic insulating cloth, the soft bag is detachably mounted on the porcelain bottle through the insulating tweezers, the elastic insulating cloth enables the soft bag to have a good insulating effect, the safety performance during operation is improved, the insulating tweezers can simplify the mounting process of operators, the overall mounting efficiency is improved, the insulating hanger rod is provided with a hook for fixing the soft bag, one end of the soft bag is fixed on the hook during mounting, the other end of the soft bag wraps up a porcelain bottle string from the lower side of the porcelain bottle upwards and is fixed on the hook, the porcelain bottle can be completely wrapped in the soft bag, the mounting process of the soft bag is simple, and the mounting of operators is facilitated; the soft bagging-off is equipped with the rings with couple looks adaptation, rings and soft bagging-off are integrated into one piece, and rings can be quick soft bagging-off of realization be installed on the couple, and can increase the area of contact of soft bagging-off and couple, ensure to lift by crane the fixed quality of in-process soft bagging-off, and set up rings and soft bagging-off into the integrated into one piece structure, simplified the mounting process between rings and the soft bagging-off, improved holistic intensity.
In addition, operating means still includes the vice, in step four the screw rod is extracted through the vice, can be quick through the vice extract the screw rod, has further improved the convenience of operation, and the operating personnel operation of being convenient for has improved the installation of screw rod and has dismantled efficiency, the change method is still including placing the case, operating means sets up and places the incasement placing, can realize operating means's unified placing, and the operating personnel of being convenient for carries, has reduced losing of operating means, and can reduce the falling of changing in-process operating means, has improved the security performance.
Other embodiments of the present invention than the preferred embodiments described above will be apparent to those skilled in the art from the present invention, and various changes and modifications can be made therein without departing from the spirit of the present invention as defined in the appended claims.
Claims (7)
1. The replacement method of the strain insulator string of the 10kV distribution network comprises an operation tool and is characterized in that: the operating tool comprises an insulating suspender, a soft bag, a power traction device, an insulating tightener, a handheld operating rod, spring pin disassembling pliers, a wire clamp operating rod, an installation hook and an insulating rod wire clamping device, and the replacing method sequentially comprises the following steps:
the method comprises the following steps: checking the operation condition of the line, and confirming that the line normally operates without ground fault;
step two: fixedly mounting an insulating hanger rod on a cross arm of the line which is qualified in the first step, and fixing a porcelain insulator on the insulating hanger rod after being wrapped by a soft packaging bag;
step three: the porcelain insulator string processed in the step two is not tensioned by the conducting wire through the power traction device, the insulating wire tightener and the insulating rod wire clamping device, then the porcelain insulator string is lifted up or put down through the soft bag, and in the installation process, one end of the power traction device bypasses the cross arm from bottom to top; the power traction device is fixed on the vertical surface of the cross arm, the power traction device is fixed on the cross arm through the self gravity of the power traction device, the other end of the power traction device is fixed on the insulating wire grip, the other end of the insulating wire grip is connected with the insulating rod wire grip, the power traction device is arranged on the lead through the insulating rod wire grip, and then the insulating wire grip tightens up the lead, so that the porcelain bottle string does not naturally droop under the tension of the lead;
step four: lifting the porcelain insulator string processed in the third step through an insulating hanger rod to enable the porcelain insulator to be in a state of not being subjected to tension of a lead, then pulling out a spring pin on a screw rod of the porcelain insulator string through spring pin disassembling and assembling pliers, taking out the spring pin, then unscrewing a nut through a handheld operating lever, taking out the screw rod, then taking out a strain clamp of the lead through a wire clamp operating lever, operating the insulating hanger rod to place the porcelain insulator string to a safe position, replacing an old porcelain insulator in a soft package with a new porcelain insulator by an operator, lifting the porcelain insulator to a position to be installed, and fixing the porcelain insulator string on a cross arm and the lead;
step five: loosening the conducting wire by operating the insulating wire grip to enable the porcelain insulator string to be stressed and restore the running state of equipment, then taking down the wire grip from the conducting wire, lifting up the insulating wire grip to enable the power traction device hung on the cross arm not to be stressed any more, detaching the power traction device from the cross arm by installing a hook, and taking down the soft packaging bag and the insulating suspender;
step six: and checking that no object is left on the line, recovering the normal operation of the line, and allowing the working responsible person to leave the operation area.
2. The method for replacing the strain insulator string of the 10kV distribution network according to claim 1, wherein the method comprises the following steps: whether the line normally runs or not is confirmed by sequentially testing electricity of the operating personnel on the wire, the porcelain insulator string and the cross arm, the operating personnel is lifted to a working position through the insulating bucket arm vehicle when testing electricity, and the distance between the working position and the line is 0.65-0.75 m.
3. The method for replacing the strain insulator string of the 10kV distribution network according to claim 1, wherein the method comprises the following steps: the soft bag is prepared by elastic insulating cloth, and the soft bag is detachably mounted on the porcelain bottle through insulating tweezers.
4. The method for replacing the strain insulator string of the 10kV distribution network according to claim 3, wherein the method comprises the following steps: the insulating hanger rod is provided with a hook for fixing the soft packaging bag, one end of the soft packaging bag is fixed on the hook during installation, and the other end of the soft packaging bag is upward wrapped around the porcelain bottle string from the lower side of the porcelain bottle and fixed on the hook.
5. The method for replacing the strain insulator string of the 10kV distribution network according to claim 4, wherein the method comprises the following steps: the soft bag is provided with a hanging ring matched with the hook, and the hanging ring and the soft bag are integrally formed.
6. The method for replacing the strain insulator string of the 10kV distribution network according to claim 1, wherein the method comprises the following steps: the operating tool also comprises a vice, and the screw rod in the step four is pulled out through the vice.
7. The method for replacing the strain insulator string of the 10kV distribution network according to claim 1, wherein the method comprises the following steps: the replacing method further comprises a placing box, and the operating tool is arranged in the placing box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910243289.2A CN110011218B (en) | 2019-03-28 | 2019-03-28 | Method for replacing strain insulator string of 10kV distribution network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910243289.2A CN110011218B (en) | 2019-03-28 | 2019-03-28 | Method for replacing strain insulator string of 10kV distribution network |
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| Publication Number | Publication Date |
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| CN110011218A CN110011218A (en) | 2019-07-12 |
| CN110011218B true CN110011218B (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910243289.2A Active CN110011218B (en) | 2019-03-28 | 2019-03-28 | Method for replacing strain insulator string of 10kV distribution network |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110289574B (en) * | 2019-07-16 | 2024-01-05 | 国网湖北省电力有限公司宜昌供电公司 | Multifunctional J-shaped line clamping and assembling and disassembling tool for 10kV insulating rod operation method |
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| CN103500961A (en) * | 2013-09-05 | 2014-01-08 | 国家电网公司 | Tool special for electrified replacement of strain insulator string |
| CN103606854A (en) * | 2013-11-27 | 2014-02-26 | 国家电网公司 | Operating method for replacing tension insulator on super and ultra-high voltage direct current transmission line in electrified mode |
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| CN203690795U (en) * | 2013-12-24 | 2014-07-02 | 国家电网公司 | Carriage used for overhaul of insulator chain |
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| CN206685794U (en) * | 2016-12-27 | 2017-11-28 | 云南电网有限责任公司红河供电局 | A kind of device of 10kV circuits earth potential live replacing tension-resistant rod insulator |
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2019
- 2019-03-28 CN CN201910243289.2A patent/CN110011218B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101174761A (en) * | 2007-10-30 | 2008-05-07 | 重庆市电力公司超高压局 | High-voltage power line tension insulator string forward spin live-wire altering method and two yoke plate device |
| CN101916971A (en) * | 2010-03-23 | 2010-12-15 | 福建省电力有限公司厦门电业局 | Earth potential live replacing device for tangent tower inverted insulator string on attachment plate |
| CN203553853U (en) * | 2013-07-04 | 2014-04-16 | 上海艾迪欧电力防振金具有限公司 | Anti-corona equal-voltage type tension-resistant string set |
| CN103500961A (en) * | 2013-09-05 | 2014-01-08 | 国家电网公司 | Tool special for electrified replacement of strain insulator string |
| CN103487910A (en) * | 2013-09-25 | 2014-01-01 | 国家电网公司 | Optical cable tightener |
| CN103606854A (en) * | 2013-11-27 | 2014-02-26 | 国家电网公司 | Operating method for replacing tension insulator on super and ultra-high voltage direct current transmission line in electrified mode |
| CN203690795U (en) * | 2013-12-24 | 2014-07-02 | 国家电网公司 | Carriage used for overhaul of insulator chain |
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| Publication number | Publication date |
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| CN110011218A (en) | 2019-07-12 |
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