CN108448488A - 840kN grades of tension resistant four cross-arm side insulator replacement tools and method - Google Patents
840kN grades of tension resistant four cross-arm side insulator replacement tools and method Download PDFInfo
- Publication number
- CN108448488A CN108448488A CN201810515265.3A CN201810515265A CN108448488A CN 108448488 A CN108448488 A CN 108448488A CN 201810515265 A CN201810515265 A CN 201810515265A CN 108448488 A CN108448488 A CN 108448488A
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- China
- Prior art keywords
- insulator
- cross
- arm side
- turnover panel
- panel fixture
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- 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.)
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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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Abstract
The present invention provides a kind of 840kN grades of tension resistant four cross-arm side insulator replacement tools of ± 1100 kilovolts of extra high voltage direct current transmission lines,The replacement tool includes cross-arm side turnover panel fixture,Yoke plate,Insulator closed card has and two hydraulic screw rods,The cross-arm side turnover panel fixture is mounted on the yoke plate,The cross-arm side turnover panel fixture is by connecting arbor,The side that two hydraulic screw rods have with the insulator closed card is attached,The insulator closed card tool other side is lifted on DC power transmission line steel tower,The insulator closed card tool is connected on the insulator by the nut on insulator,The present invention also provides a kind of replacing options of 840kN grades of tension resistant four cross-arm side insulator,The blank that domestic ± 1100 kilovolts of UHVDC Transmission Lines livewire work field tetrad strain cross arm side monolithic insulators replace Work tool is filled up.
Description
Technical field
The present invention relates to electric system maintenance technique fields, more particularly, to a kind of ± 1100 kilovolts of extra-high voltage direct-current transmissions
840kN grades of tension resistant four cross-arm side insulator replacement tools of circuit and method.
Background technology
± 1100 kilovolts of ancient spring line extra high voltage direct current transmission lines are that first direct current of highest voltage level in the world is extra-high
Pressure transmission line is replaced and has defective insulator mostly using electricity cut-off type, i.e., overhauled and replaced under the conditions of power failure, passes
The altitude hot-line operation replacement monolithic insulator labor intensity of system is big, and efficiency is relatively low, and ± 1100 kilovolts of ancient spring lines are extra-high
Pressure DC transmission line there is no livewire work method and the relevant research of Work tool at present.
It is exhausted that the document of 105337216 A of Publication No. CN discloses a kind of charged for replacement extra-high voltage ground electrode circuit strain insulator
The tool and its method of edge, including preceding card division, leading screw, insulation pulling plate and rear card division, the preceding card division uses bent plate card, described
Preceding card division is connect with one end of the leading screw, and the other end of the leading screw is connect with one end of the insulation pulling plate, the insulation
The other end of pulling plate is connect with the rear card division, and the insulation pulling plate length is adjustable, and tune has been evenly arranged on the insulation pulling plate
Knothole, during using the tool changing strain insulator, cross-arm side first is not to be exceeded in the body part of electrician
Strain insulator, and the minimum safe distance of 0.6m is kept, ground electrician detects conductive line surfaces temperature with temperature measuring instrument,
Once it was found that constant temperature rises, and more than 60 degrees Celsius, reminding No. two electricians at equipotential in time, avoiding its long-time
Contact high temperature wire causes personal injury, ensure that the personal safety of operating personnel, but the document needs 2-3 people's compounding practice,
Labor intensity is big, less efficient, and operating process is cumbersome, and it is not convenient enough to use.
The document of 105098655 A of Publication No. CN discloses a kind of strain insulator replacement tool, including the first insulation
End plate, the second insulating end plate, gripper, at least two pieces of snap-gauges and at least two insulated tension poles that can be stretched, on insulated tension pole
Equipped with the control handle that control is flexible；First insulating end plate and the second insulating end plate are separately positioned on the both ends of insulated tension pole, with
At least two insulated tension poles collectively form insulation stringing frame；Snap-gauge is erected at least two insulated tension poles, and snap-gauge is equipped with interior
The recessed arc notch for being used to support strain insulator is equipped with connecting rod, at least two pieces of snap-gauges and company between adjacent two snap-gauge
Extension bar collectively forms the bracket that can place insulator；Gripper is arranged on the first insulating end plate, although the document has band
The strain insulator that charged renewal strain insulator, easy to operation, safe feature but the document are only applicable to common transmission line of electricity is exhausted
The replacement of edge can not be suitable for the replacement of the strain insulator of extra high voltage direct current transmission line, and the replacement work of the document
Have material and uses common insulating end plate, can not be while mitigating weight, the mechanical strength of hoisting tool.
Invention content
In view of this, in view of the deficiencies of the prior art, it is an object of the present invention to provide one kind, to be adapted to ± 1100kV extra-high
840kN grades of tension resistant four cross-arm side insulator replacement tools of DC power transmission line and method are pressed, for equipotential or the replacement that has a power failure
And installation tension resistant four insulator chain cross-arm side monolithic insulator work, fill up domestic ± 1100 kilovolts of UHVDC Transmission Lines
Livewire work field tetrad strain cross arm side monolithic insulator replaces the blank of Work tool.
In order to achieve the above objectives, the present invention uses following technical scheme：
A kind of 840kN grades of tension resistant four cross-arm side insulator replacement tools of ± 1100 kilovolts of extra high voltage direct current transmission lines, including
Cross-arm side turnover panel fixture, yoke plate, insulator closed card tool and two hydraulic screw rods, the cross-arm side turnover panel fixture are mounted on described
On yoke plate, the cross-arm side turnover panel fixture has by connecting arbor, two hydraulic screw rods and the insulator closed card
Side is attached, and the insulator closed card tool other side is lifted on DC power transmission line steel tower, the insulator enclosed
Fixture is connected on the insulator by the nut on insulator.
Further, the yoke plate includes set square and the right angle hanging plate being rotatablely connected with set square, the set square, institute
State right angle hanging plate, the cross-arm side turnover panel fixture is bolted, the cross-arm side turnover panel fixture passes through the right angle hanging plate
It is connect with insulator screw cap.
Further, spring catch is equipped in the insulator screw cap.
Further, the cross-arm side turnover panel fixture forms an anchor point by the bolt on the yoke plate.
Further, the cross-arm side turnover panel fixture and insulator closed card tool material are titanium alloy material.
Further, the insulator closed card tool includes preceding card division and rear card division, and the preceding card division passes through jointing
It is connect with the hydraulic screw rod.
A kind of 840kN grades of tension resistant four cross-arm side replacing insulator methods of ± 1100 kilovolts of extra high voltage direct current transmission lines,
Include the following steps：
Step 1：Two hydraulic screw rods are tightened, in the horizontal load transfer of insulator to the cross-arm side turnover panel fixture, will be made described
The insulator relaxation of cross-arm-end in cross-arm side turnover panel fixture；
Step 2：The spring catch under insulator in nut is won with write off folder, replaces undesirable insulator；
Step 3：After replacing poor insulator, loosen hydraulic screw rod, makes the horizontal load on the cross-arm side turnover panel fixture
Lotus is transferred on insulator, and the cross-arm side turnover panel fixture does not stress at this time；
Step 4：Remove the cross-arm side turnover panel fixture.
The beneficial effects of the invention are as follows：
1. the present invention provides a kind of ± 1100 kilovolts of extra high voltage direct current transmission lines 840kN grades of tension resistant four cross-arm side insulators
Replacement tool, using the anchor point that cross-arm side yoke plate is cross-arm side turnover panel fixture, the other end is exhausted using insulator steel cap for one end
The horizontal loading of insulator is transferred in the present apparatus, carries out at this time dismountable after tightening hydraulic screw rod by the anchor point at edge end
With replacement monolithic insulator operation.After the present apparatus, the labor intensity of high-altitude charged for replacement monolithic insulator is greatly reduced,
Shorten the activity duration, improves working efficiency.
2. the cross-arm side turnover panel fixture of insulator replacement tool, insulator closed card tool are all made of titanium alloy manufacture, contracting
The mechanical strength that tool is improved while the volume for having subtracted tool itself alleviates the weight of tool, reduces operating risk,
Improve the safety of work.
3. the cross-arm side turnover panel fixture, insulator closed card in the insulator replacement tool of the present invention have nominal operating duty
For 215kN, test load 322.5KN, it is similar to occupy China in terms of the above the key technical indexes at present for 2.5 times of safety coefficient
Live working tools are the first.
4. the insulator replacement tool design concept in the present invention is unique, novel, have special-purpose member few, is easy
It combines, be convenient for carrying, using the advantages that simple, light-weight, coefficient safe to use is high, has filled up domestic ± 1100 kilovolts of extra-high voltages
DC line livewire work field tetrad strain cross arm side monolithic insulator replaces the blank of Work tool.
Description of the drawings
Fig. 1：One kind of the invention 840kN grades of tension resistant four cross-arm side insulators of ± 1100 kilovolts of extra high voltage direct current transmission lines
The assembling schematic diagram of replacement tool；
Fig. 2：One kind of the invention 840kN grades of tension resistant four cross-arm side replacing insulators of ± 1100 kilovolts of extra high voltage direct current transmission lines
The cross-arm side turnover panel fixture 1 of tool and yoke plate annexation figure；
Fig. 3：One kind of the invention 840kN grades of tension resistant four cross-arm side replacing insulators of ± 1100 kilovolts of extra high voltage direct current transmission lines
Insulator closed card tool and the hydraulic screw rod annexation figure of tool；
Fig. 4：One kind of the invention 840kN grades of tension resistant four cross-arm side replacing insulators of ± 1100 kilovolts of extra high voltage direct current transmission lines
Insulator closed card tool and the insulator connection relation vertical view of tool.
Reference sign：
1, load rollover board tool, 2, insulator closed card tool, 3, hydraulic screw rod, 4, connection arbor, 5, set square, 6, right angle hangs
Plate, 7, bolt, 8, nut, 9, insulator, 10, spring catch, 11, jointing, 12, link bolt.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Attached drawing, the technical solution of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, ordinary skill
The every other embodiment that personnel are obtained, shall fall within the protection scope of the present invention.
As shown in Figs. 1-2, a kind of 840kN grades of tension resistant four cross-arm side insulation of ± 1100 kilovolts of extra high voltage direct current transmission lines
Sub- replacement tool, including cross-arm side turnover panel fixture 1, yoke plate, insulator closed card tool 2 and two 12 tons of hydraulic screw rods 3, it is described
Cross-arm side turnover panel fixture 1 is mounted on the yoke plate, and the cross-arm side turnover panel fixture is by connecting arbor 4, two 12 tons described
Hydraulic screw rod 3 and the side of insulator closed card tool 2 are attached, and the insulator closed card has 2 other sides and is lifted on
On DC power transmission line steel tower, the insulator closed card tool 2 is connected to by the nut on insulator on insulator 9.
Wherein:The step of assembling 840kN grades of tension resistant four cross-arm side insulator replacement tools includes following four step：
A, insulator closed card had into 2 and 12 tons of hydraulic screw rods 3 on the ground（Or other tools）Trial assembly is carried out, determines insulator
Closed type fixture 2 and hydraulic screw rod 3 can accurate difference connect, metal leading screw, fixture and fastening means should be through examinations before operation
Assembling confirm each operation of components flexibly, dependable performance, scene must not use the progress operation of unqualified and non-dedicated tool.
B, 840KN insulator closed cards tool 2 is lifted on DC power transmission line steel tower by auxiliary tools such as tackle cords
On.
C, cross-arm side turnover panel fixture 1 being mounted on yoke plate, insulator closed card tool 2 is mounted on corresponding insulator,
Tightening nuts.
D, 12 tons of hydraulic screw rods 3 are installed.
Spring catch 10 is equipped in the insulator screw cap, spring catch 10 can fix insulator 9, by insulator 9 and bowl head
It is attached, is convenient for replacing during replacing insulator.
The yoke plate includes set square 5 and the right angle hanging plate 6 being rotatablely connected with set square, the set square 5, the right angle
Hanging plate 6, the cross-arm side turnover panel fixture 1 are connected by bolt 7, the cross-arm side turnover panel fixture 1 by the right angle hanging plate 6 with
Nut 8 on insulator is attached.The model L-168J-300/800 that yoke plate uses herein, the model of right angle hanging plate 6
Z84180。
The bolt 7 excessively of the cross-arm side turnover panel fixture 1 forms an anchor point on the yoke plate.Tool is replaced in this way
One end utilizes the anchor point that cross-arm side yoke plate is cross-arm side turnover panel fixture.
It is titanium alloy material that the cross-arm side turnover panel fixture 1 and insulator closed card, which have 2 materials,.The type that titanium alloy uses
Number it is TC4, cross-arm side is improved while reducing cross-arm side turnover panel fixture 1 and insulator closed card 2 itself volume of tool
The mechanical strength of turnover panel fixture 1 and insulator closed card tool 2, alleviates cross-arm side turnover panel fixture 1 and insulator closed card has 2
Weight, in addition, it is 215kN, test load that cross-arm side turnover panel fixture 1 and insulator closed card, which have 2 nominal operating duties,
It is first to occupy the similar live working tools in China in terms of the above the key technical indexes at present for 322.5KN, 2.5 times of safety coefficient
Position uses security performance height, reliable and stable.
As shown in Figure 3-4, the insulator closed card tool 2 includes preceding card division and rear card division, and the preceding card division passes through connection
Connector 11 is connect with described two 12 tons of hydraulic screw rods 3.By the tightening of two 12 tons of hydraulic screw rods 3 and loosen, makes horizontal lotus
It is loaded between insulator and cross-arm side turnover panel fixture 1 and shifts, the other end passes through hinged spiral shell using insulator and insulator closed card tool 2
Bolt combines closely to form the anchor point at insulator end, and after tightening hydraulic screw rod 3, the horizontal loading of insulator is transferred to insulator
On replacement tool, at this point, being convenient for replacing and removing monolithic insulator operation.To make insulator end tighten and relaxation, into
And more convenient insulator 9 is replaced.
A kind of 840kN grades of tension resistant four cross-arm side replacing insulator methods of ± 1100 kilovolts of extra high voltage direct current transmission lines,
Include the following steps：
Step 1：Two hydraulic screw rods are tightened, in the horizontal load transfer of insulator to the cross-arm side turnover panel fixture, will be made described
The insulator relaxation of cross-arm-end in cross-arm side turnover panel fixture；
Step 2：The spring catch under insulator in nut is won with write off folder, replaces undesirable insulator；
Step 3：After replacing poor insulator, loosen hydraulic screw rod, makes the horizontal load on the cross-arm side turnover panel fixture
Lotus is transferred on insulator, and the cross-arm side turnover panel fixture does not stress at this time；
Step 4：Remove the cross-arm side turnover panel fixture, the step of dismounting with 840kN grades of tension resistant four cross-arm side insulators of assembling
The step of replacement tool, is opposite.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, this field is common
Other modifications or equivalent replacement that technical staff makes technical scheme of the present invention, without departing from technical solution of the present invention
Spirit and scope, be intended to be within the scope of the claims of the invention.
Claims (7)
1. a kind of 840kN grades of tension resistant four cross-arm side insulator replacement tools of ± 1100 kilovolts of extra high voltage direct current transmission lines,
It is characterized in that：Including cross-arm side turnover panel fixture, yoke plate, insulator closed card tool and two hydraulic screw rods, the cross-arm side turnover panel
Fixture be mounted on the yoke plate on, the cross-arm side turnover panel fixture by connect arbor, two hydraulic screw rods with it is described absolutely
The side of edge closed type fixture is attached, and the insulator closed card tool other side is lifted on DC power transmission line steel tower,
The insulator closed card tool is connected on the insulator by the nut on insulator.
2. one kind according to claim 1 840kN grades of tension resistant four cross-arms of ± 1100 kilovolts of extra high voltage direct current transmission lines
Side insulator replacement tool, it is characterised in that：The yoke plate includes set square and the right angle hanging plate being rotatablely connected with set square, institute
It states set square, the right angle hanging plate, the cross-arm side turnover panel fixture to be bolted, the cross-arm side turnover panel fixture passes through institute
Right angle hanging plate is stated to connect with insulator screw cap.
3. one kind according to claim 2 840kN grades of tension resistant four cross-arms of ± 1100 kilovolts of extra high voltage direct current transmission lines
Side insulator replacement tool, it is characterised in that：Spring catch is equipped in the insulator screw cap.
4. one kind according to claim 2 840kN grades of tension resistant four cross-arms of ± 1100 kilovolts of extra high voltage direct current transmission lines
Side insulator replacement tool, it is characterised in that：The cross-arm side turnover panel fixture forms one by the bolt on the yoke plate
A anchor point.
5. one kind according to claim 1 840kN grades of tension resistant four cross-arms of ± 1100 kilovolts of extra high voltage direct current transmission lines
Side insulator replacement tool, it is characterised in that：The cross-arm side turnover panel fixture and insulator closed card tool material are titanium alloy
Material.
6. one kind according to claim 1 840kN grades of tension resistant four cross-arms of ± 1100 kilovolts of extra high voltage direct current transmission lines
Side insulator replacement tool, it is characterised in that：The insulator closed card tool includes preceding card division and rear card division, and the preceding card division is logical
Jointing is crossed to connect with the hydraulic screw rod.
7. a kind of 840kN grades of tension resistant four cross-arm side replacing insulator methods of ± 1100 kilovolts of extra high voltage direct current transmission lines,
It is characterized in that：Include the following steps：
Step 1：Two hydraulic screw rods are tightened, in the horizontal load transfer of insulator to the cross-arm side turnover panel fixture, will be made described
The insulator relaxation of cross-arm-end in cross-arm side turnover panel fixture；
Step 2：The spring catch under insulator in nut is won with write off folder, replaces undesirable insulator；
Step 3：After replacing poor insulator, loosen hydraulic screw rod, makes the horizontal load on the cross-arm side turnover panel fixture
Lotus is transferred on insulator, and the cross-arm side turnover panel fixture does not stress at this time；
Step 4：Remove the cross-arm side turnover panel fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810515265.3A CN108448488A (en) | 2018-05-25 | 2018-05-25 | 840kN grades of tension resistant four cross-arm side insulator replacement tools and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810515265.3A CN108448488A (en) | 2018-05-25 | 2018-05-25 | 840kN grades of tension resistant four cross-arm side insulator replacement tools and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108448488A true CN108448488A (en) | 2018-08-24 |
Family
ID=63205582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810515265.3A Pending CN108448488A (en) | 2018-05-25 | 2018-05-25 | 840kN grades of tension resistant four cross-arm side insulator replacement tools and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108448488A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193533A (en) * | 2018-10-29 | 2019-01-11 | 国网黑龙江省电力有限公司检修公司 | Transmission line of electricity suspension string overhang insulation subcard tool and installation method |
| CN113381340A (en) * | 2021-06-16 | 2021-09-10 | 国网山西省电力公司检修分公司 | A turn over board card for extra-high voltage line changes insulator |
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| JP2012161174A (en) * | 2011-02-01 | 2012-08-23 | Chugoku Electric Power Co Inc:The | Power line suspension device insulator chain lifting device |
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| CN104682262A (en) * | 2015-02-12 | 2015-06-03 | 中国南方电网有限责任公司超高压输电公司百色局 | Conductor end fixture for replacing first insulator at conductor end of single-link suspension insulator string and application of conductor end fixture |
| CN105337215A (en) * | 2015-11-26 | 2016-02-17 | 国网河南省电力公司检修公司 | Tool and method for replacing earth electrode circuit corner tension-resistant hardware fitting |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012161174A (en) * | 2011-02-01 | 2012-08-23 | Chugoku Electric Power Co Inc:The | Power line suspension device insulator chain lifting device |
| CN202651692U (en) * | 2012-06-11 | 2013-01-02 | 江苏省电力公司镇江供电公司 | Large-knife clamp tool for changing double-strain string insulator |
| 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 |
| CN103618251A (en) * | 2013-11-27 | 2014-03-05 | 国家电网公司 | Technology for electrified overhaul of +-800kV ultrahigh voltage direct-current transmission line |
| CN104242153A (en) * | 2014-09-29 | 2014-12-24 | 国家电网公司 | Construction technology for replacing monolithic 550kN glass insulators of strain towers of extra-high voltage direct-current transmission lines |
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| 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 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109193533A (en) * | 2018-10-29 | 2019-01-11 | 国网黑龙江省电力有限公司检修公司 | Transmission line of electricity suspension string overhang insulation subcard tool and installation method |
| CN113381340A (en) * | 2021-06-16 | 2021-09-10 | 国网山西省电力公司检修分公司 | A turn over board card for extra-high voltage line changes insulator |
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Application publication date: 20180824 |