CN103618250A - Operating method for electrified replacement of double-V double-L insulator chains of extra-high voltage circuit - Google Patents
Operating method for electrified replacement of double-V double-L insulator chains of extra-high voltage circuit Download PDFInfo
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- CN103618250A CN103618250A CN201310617038.9A CN201310617038A CN103618250A CN 103618250 A CN103618250 A CN 103618250A CN 201310617038 A CN201310617038 A CN 201310617038A CN 103618250 A CN103618250 A CN 103618250A
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- insulator
- arm
- insulator string
- high voltage
- machete card
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Abstract
The invention provides an operating method for electrified replacement of double-V double-L insulator chains of an extra-high voltage circuit. The operating method comprises the following steps that a tower cross arm fixture is mounted through a preformed construction hole or a main material at an insulator chain hanging point, and a large tool fixture is mounted through a wire side two-gang plate; a wire lifting device, an insulating pull rod and the tower cross arm fixture are connected to form a mechanical load transfer system of the insulator chains; the contact point of the back of the large tool fixture and the two-gang plate is used as a fulcrum, the wire lifting device is operated to carry out small-distance wire lifting position changing, a large tool fixture operating arm is driven to rotate to drive an action arm to transfer loads on the insulator chains, and the mechanical loads of the insulator chains to be maintained are transferred to the wire lifting device; the insulator chains to be maintained are dismantled. Through the lever principle, the wire lifting device is operated to carry out small-distance wire lifting position changing, so that the large tool fixture operating arm is driven to rotate to drive the action arm to transfer the loads on the insulator chains, the insulator chains can be conveniently and quickly replaced, and the requirement for electrified maintenance of the extra-high voltage circuit is met.
Description
[technical field]
The present invention relates to surpass, extra-high voltage electric transmission and transformation field, relate in particular to the operational method of a kind of super, two V of extra high voltage line charged for replacement, two L insulator strings.
[background technology]
Transmission line operation maintenance service work is the important means of grasping operation of power networks situation, discovery in time and treatment facility defect, is also the element task of guaranteeing line security stable operation.Because super extra-high voltage grid is in service in core status at whole national grid, therefore the operating maintenance work of super extra-high voltage grid is of great significance for safe, stable, the reliability service tool that guarantee super extra-high voltage grid and even whole national grid.
At first extra-high voltage direct-current, make progress in engineering design and first common-tower double-return DC line Ge Nan line (woods maple line) engineering design, the tangent tower of circuit adopts two " V " insulator strings and hard capstan head to adopt the assembling mode of two " L " insulator strings conventionally.When there is defect in insulator string parts, the general mechanical load that adopts " just carrying line " mode to shift insulator string, maintenance and replacing insulator string.
Refer to Fig. 1, so-called " just carrying line " mode mainly refers to, with locating to reserve construction hole (or main material) directly over wire yoke plate, do fulcrum on the tower of instrument, cross arm of tower special mould clamp (or fastening means) is installed, being connected is connected with wire, the mechanical load transfer system of composition insulator string by connection, to carry line apparatus (mechanical screw mandrel or hydraulic screw rod), high-strength insulating pull bar, quadripartion line lifter (six division line lifters).By operate machine screw mandrel or hydraulic screw rod, load transfer system is tightened up stressed, slowly wire is mentioned, make the load transfer of Awaiting Overhaul insulator string machinery to carrying line apparatus, realize the maintenance of insulator string.
Yet, the mechanical load of carrying lineman's utensil of the operating type of this " just carrying line " is large, may cause maintenance side insulator string horizontal direction force to diminish, thereby wire is offset round about, when and in maintenance during defective insulator string, insulator string also will adopt the wire lateral displacement measure that prevents while resetting, reset difficult with exemption from inspection insulator string.
[summary of the invention]
In view of this, for overcoming the deficiencies in the prior art, be necessary to provide a kind of and be applicable to surpass, the two V of charged for replacement of extra high voltage line, the operational method of two L insulator strings.
An operational method for the two V of super, extra high voltage line charged for replacement, two L insulator strings, described operational method comprises the following steps: by tangent tower, enter equipotential; Utilize reserved construction hole, insulator string hanging point place or the main material in hanging point place, as fulcrum on the tower of instrument, cross arm of tower jig is installed, utilize side of wire was duplex plate at the fulcrum of side of wire was, machete card to be installed as instrument; By carrying line apparatus, high-strength insulating pull bar is connected with cross-arm jig on tower, forms the mechanical load transfer system of insulator string; Utilize the card of machete card to carry on the back with duplex plate contact position as fulcrum, and machete card is divided into actuation arm and motion arm, the linear deflection of proposing that line apparatus carries out small distance is proposed in operation, drive machete card motion arm to rotate, induced effect arm shifts load on insulator string, makes the load transfer of Awaiting Overhaul insulator string machinery to carrying line apparatus; Pull down Awaiting Overhaul insulator string.
Therein at least one embodiment, the described step of utilizing side of wire was duplex plate at the fulcrum of side of wire was, machete card to be installed as instrument comprises: the bottom that the bayonet socket of machete card is installed on to Awaiting Overhaul insulator string one side on duplex plate, the hook of machete card is caught on to the core through screw rod at duplex plate center, the flat surface of the bayonet socket root of machete card holds up Awaiting Overhaul insulator string one side of duplex plate.
Therein at least one embodiment, described in the load transfer of Awaiting Overhaul insulator string machinery is comprised to the step of carrying line apparatus: at the external line apparatus of carrying of openend of machete card, by adjusting, carry line apparatus the openend of machete card applied to power.
Therein at least one embodiment, described in carry traditional thread binding mechanical screw mandrel or the hydraulic screw rod of being set to.
The operational method of the two V of charged for replacement super, extra high voltage line of the present invention, two L insulator strings has been utilized lever principle, by operation, propose the linear deflection of proposing that line apparatus carries out small distance, can drive machete card motion arm to rotate, induced effect arm shifts load on insulator string, can change quickly and easily two " V " insulator strings of straight line, firmly turn two " L " insulator strings, meet requirement super, UHVDC Transmission Lines hotline maintenance.
[accompanying drawing explanation]
Fig. 1 is the schematic diagram that existing " just carrying line " method is changed insulator string.
Fig. 2 A, 2B are respectively front view and the vertical view that the machete card adopting in the operational method of tangent tower, hard capstan head insulator string is changed in preferred embodiment of the present invention.
Fig. 3 is for adopting the operation chart of the machete card replacement insulator string in Fig. 2.
[embodiment]
For understanding better the present invention, below with reference to accompanying drawing and instantiation, invention is described in detail.
According to design feature super, UHV transmission line design, the invention provides two " V " insulator strings of a kind of replacing straight line, firmly turn two " L " insulator string operations employing machete cards and utilize " the micro-line working system of carrying of lever principle " to shift the mechanical load of insulator string.
Incorporated by reference to consulting Fig. 2 A, 2B, the structure of machete card is as shown in Fig. 2 A, 2B.Machete card comprises hook 10, opening 30 and the waist 20 that connects described hook 10 and described opening 30.In hook 10, be provided with bayonet socket 12, the root of bayonet socket 12 is flat surface 14 by the face of a side of waist 20.
Incorporated by reference to consulting Fig. 3, the hook 10 that the hook 10 of one end of machete card and the core through screw rod 42 of inverted triangle duplex plate 40 match, the opening 30 of the other end is for external screw mandrel 50, and the flat surface 14 of its waist 20 contacts with the bottom side of inverted triangle duplex plate 40.During use, the bayonet socket 12 of linking up with 10 ends is contained in inverted triangle duplex plate 40 both sides by machete cutting ferrule, links up with 10 and hooks and close mutually with the core through screw rod 42 of inverted triangle duplex plate 40, and the root flat surface 14 of bayonet socket 12 contacts with the bottom side of inverted triangle duplex plate 40.
If need to safeguard in advance and overhaul by the gold utensil on a certain side on respect to inverted triangle duplex plate 40, when first the bayonet socket of machete card 12 being installed on to inverted triangle duplex plate 40 this side bottom, hook 10 core through screw rod 42 that catch in inverted triangle duplex plate 40 centers, the root flat surface 14 of bayonet socket 12 holds up the pre-maintenance of inverted triangle duplex plate 40 and one end of maintenance, so form and take the lever that the other end of inverted triangle duplex plate 40 upper sides is fulcrum, opening 30 ends are lever end.And then at the external screw mandrel 50 of opening 30 end, by manual adjustment screw mandrel 50, opening 30 ends are applied to power, lever end is that opening 30 places only need apply less strength and just the heavier load on one end of the pre-maintenance of triangle duplex plate 40 and maintenance can be laid down like this.Last staff just can easily safeguard and maintenance transmission facility under high-altitude and charged operating mode.
Below by employing machete card of the present invention and utilize " the micro-line working system of carrying of lever principle " to change two " V " insulator strings of straight line, the operational method that firmly turns two " L " insulator strings describes, its concrete operation step is as follows:
(1) by tangent tower, enter equipotential;
(2) utilize reserved construction hole, insulator string hanging point place (or the main material in hanging point place), as fulcrum on the tower of instrument, cross arm of tower jig is installed, utilize side of wire was duplex plate at the fulcrum of side of wire was, machete card to be installed as instrument;
(3) by carrying line apparatus (mechanical screw mandrel or hydraulic screw rod), high-strength insulating pull bar is connected with cross-arm jig on tower, forms the mechanical load transfer system of insulator string;
(4) utilize the card of machete card to carry on the back with duplex plate contact position as fulcrum, and machete card is divided into actuation arm and motion arm, the linear deflection of proposing that line apparatus carries out small distance is proposed in operation, drive machete card motion arm to rotate, induced effect arm shifts load on insulator string, makes the load transfer of Awaiting Overhaul insulator string machinery to carrying line apparatus;
(5) pull down Awaiting Overhaul insulator string.
In above-mentioned technique, two " V " insulator string, the live load that firmly turns two " L " insulator string machete cards are 50KN.Above-mentioned technique is owing to having utilized lever principle, the linear deflection of proposing that line apparatus carries out small distance is proposed in operation, can drive machete card motion arm to rotate, induced effect arm shifts load on insulator string, can change quickly and easily two " V " insulator strings, firmly turn two " L " insulator strings, meet requirement super, UHVDC Transmission Lines hotline maintenance.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (4)
1. an operational method for the two V of super, extra high voltage line charged for replacement, two L insulator strings, described operational method comprises the following steps:
By tangent tower, enter equipotential;
Utilize reserved construction hole, insulator string hanging point place or the main material in hanging point place, as fulcrum on the tower of instrument, cross arm of tower jig is installed, utilize side of wire was duplex plate at the fulcrum of side of wire was, machete card to be installed as instrument;
By carrying line apparatus, high-strength insulating pull bar is connected with cross-arm jig on tower, forms the mechanical load transfer system of insulator string;
Utilize the card of machete card to carry on the back with duplex plate contact position as fulcrum, and machete card is divided into actuation arm and motion arm, the linear deflection of proposing that line apparatus carries out small distance is proposed in operation, drive machete card motion arm to rotate, induced effect arm shifts load on insulator string, makes the load transfer of Awaiting Overhaul insulator string machinery to carrying line apparatus;
Pull down Awaiting Overhaul insulator string.
2. the operational method of super, two V of extra high voltage line charged for replacement according to claim 1, two L insulator strings, it is characterized in that, the described step of utilizing side of wire was duplex plate at the fulcrum of side of wire was, machete card to be installed as instrument comprises: the bottom that the bayonet socket of machete card is installed on to Awaiting Overhaul insulator string one side on duplex plate, the hook of machete card is caught on to the core through screw rod at duplex plate center, the flat surface of the bayonet socket root of machete card holds up Awaiting Overhaul insulator string one side of duplex plate.
3. the operational method of super, two V of extra high voltage line charged for replacement according to claim 1, two L insulator strings, it is characterized in that, described the load transfer of Awaiting Overhaul insulator string machinery is comprised to the step of carrying line apparatus: at the external line apparatus of carrying of openend of machete card, by adjusting, carry line apparatus the openend of machete card is applied to power.
4. the operational method of super, two V of extra high voltage line charged for replacement according to claim 3, two L insulator strings, is characterized in that: described in carry traditional thread binding mechanical screw mandrel or the hydraulic screw rod of being set to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310617038.9A CN103618250A (en) | 2013-11-27 | 2013-11-27 | Operating method for electrified replacement of double-V double-L insulator chains of extra-high voltage circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310617038.9A CN103618250A (en) | 2013-11-27 | 2013-11-27 | Operating method for electrified replacement of double-V double-L insulator chains of extra-high voltage circuit |
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| CN103618250A true CN103618250A (en) | 2014-03-05 |
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| CN201310617038.9A Pending CN103618250A (en) | 2013-11-27 | 2013-11-27 | Operating method for electrified replacement of double-V double-L insulator chains of extra-high voltage circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106992466A (en) * | 2017-05-18 | 2017-07-28 | 国家电网公司 | The strain insulator string electrification replacing tool of extra-high voltage six and replacing options |
| CN111725737A (en) * | 2020-07-07 | 2020-09-29 | 国网湖南省电力有限公司 | Device and method for live replacement of extra-high voltage direct current v-type duplex composite insulator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000059936A (en) * | 1998-08-10 | 2000-02-25 | Chubu Electric Power Co Inc | Insulator replacing device for two-string strain- insulator apparatus |
| KR20040037868A (en) * | 2002-10-30 | 2004-05-08 | 한국전력공사 | An insulator exchanger of power line |
| CN202014055U (en) * | 2010-12-28 | 2011-10-19 | 河北省电力公司超高压输变电分公司 | Overhauling device of V-shaped double-string insulator for +-660KV direct current transmission line |
-
2013
- 2013-11-27 CN CN201310617038.9A patent/CN103618250A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000059936A (en) * | 1998-08-10 | 2000-02-25 | Chubu Electric Power Co Inc | Insulator replacing device for two-string strain- insulator apparatus |
| KR20040037868A (en) * | 2002-10-30 | 2004-05-08 | 한국전력공사 | An insulator exchanger of power line |
| CN202014055U (en) * | 2010-12-28 | 2011-10-19 | 河北省电力公司超高压输变电分公司 | Overhauling device of V-shaped double-string insulator for +-660KV direct current transmission line |
Non-Patent Citations (2)
| Title |
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| 王星超等: "带电作业工器具研制及带电作业实用化研究", 《湖北电力》 * |
| 胡川等: "±800kV特高压直流输电线路带电作业工器具研制及应用", 《湖北电力》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104242153B (en) * | 2014-09-29 | 2017-06-13 | 国家电网公司 | Change UHVDC Transmission Lines anchor support monolithic 550kN glass insulator construction technologies |
| CN106992466A (en) * | 2017-05-18 | 2017-07-28 | 国家电网公司 | The strain insulator string electrification replacing tool of extra-high voltage six and replacing options |
| CN111725737A (en) * | 2020-07-07 | 2020-09-29 | 国网湖南省电力有限公司 | Device and method for live replacement of extra-high voltage direct current v-type duplex composite insulator |
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