CN203607749U - Shielding cover for distribution-line disconnecting switch - Google Patents
Shielding cover for distribution-line disconnecting switch Download PDFInfo
- Publication number
- CN203607749U CN203607749U CN201320819489.6U CN201320819489U CN203607749U CN 203607749 U CN203607749 U CN 203607749U CN 201320819489 U CN201320819489 U CN 201320819489U CN 203607749 U CN203607749 U CN 203607749U
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- Prior art keywords
- shield
- isolating switch
- mask
- shielding
- lead
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- Expired - Lifetime
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- 230000003068 static effect Effects 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 4
- 230000016507 interphase Effects 0.000 abstract 2
- 239000012212 insulator Substances 0.000 description 16
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 15
- 238000002955 isolation Methods 0.000 description 11
- 229910052573 porcelain Inorganic materials 0.000 description 6
- 230000008859 change Effects 0.000 description 4
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- 238000010276 construction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to a maintenance tool for a power transmission line, and is used for live maintenance operation of an overhead distribution line, specifically a shielding cover for a distribution-line disconnecting switch. A method of all-insulation live hot-line work is generally used for the replacing of a disconnecting switch on a conventional overhead distribution line, more insulating blankets are used for covering a charged body, and the working time is long. The shielding cover provided by the utility model consists of an upper shielding cover and a lower shielding cover. The structure of the upper shielding cover and the structure of the lower shielding cover are symmetrical, and the inner sides of the upper and lower shielding covers cooperate with each other in a plug-in mounting manner. The upper and lower shielding covers are vertically connected through a disconnecting switch shielding plate and an interphase shielding plate. The disconnecting switch shielding plate is provided with two slots. The inner sides of the interphase shielding plates of the two shielding covers are respectively provided with a moving-static contact shielding plate and two lead shielding plates in a hinged manner. The cooperation joint of the upper and lower shielding covers is provided with shackles which are corresponding to each other. The shielding cover is advantageous in that the structure is simple, the shielding cover is suitable for various types of disconnecting switches, the number of the insulating blankets is reduced, the operation is convenient, and the work efficiency is improved.
Description
Technical field
The utility model relates to Maintenance of Electric Transmission Line instrument, for 10kV overhead distribution hotline maintenance attended operation, and specifically a kind of distribution line isolating switch mask.
Background technology
Live working of distribution network is the work of a high professional qualification, excessive risk, high investment, is also one of Important Action effectively improving power supply reliability.
Air clearance between the three-phase conducting wire of 10kV overhead distribution is little, and the equipment of installing on shaft tower is intensive, when live line working personnel change damage equipment in limited scope of activities, very easily touches adjacent charging equipment.At present, on overhead distribution, change the work such as isolating switch, generally adopt " all insulation " Live line maintenance method (being that operating personnel all covers up isolating switch and all energized conductors empire cloth around), complete replacing and the maintenance of isolating switch, this operational method has the line electricity of the reduction loss of energy, improve power supply reliability, facilitate the plurality of advantages such as people's lives, but live line working constructing operation complexity, cover the insulated target quantity that electrified body uses more, the work high above the ground time is longer, staff's physical demands is large, waste time and energy, operating efficiency is lower, be prone to violation operation, there is potential safety hazard in workmen and equipment.
Summary of the invention
The purpose of this utility model is to provide a kind of distribution line isolating switch mask, in the operations such as overhead distribution charged for replacement isolating switch, disconnecting lead-in wire, repairing wire, removing foreign matter, utilize mask to cover charging equipment (isolating switch), by the isolation of people and charged isolating switch, prevent operating personnel and directly touch with isolating switch generation in the time of live line working.
The technical solution of the utility model is: formed by upper mask, lower mask, and upper mask and lower shielding cover structure symmetry, the relative plug-in mounting in inner side coordinates; Upper mask and lower mask are by isolating switch shield, alternate shield, dynamic/static contact shield, lead-in wire shield composition;
On isolating switch shield, have two slots that are parallel to each other, slot one end is opened on isolating switch shield inside edge, other end semicircular in shape (when mask uses, two slots are inserted on the porcelain patticoat of isolating switch supporting insulator); The vertical connection of upper end of isolating switch shield outer ledge and alternate shield;
Dynamic/static contact shield is vertically articulated and connected at alternate shield middle part, and two lead-in wire shields are vertically articulated and connected in the alternate shield left and right sides, are positioned at the both sides of dynamic/static contact shield;
Dynamic/static contact shield and two lead-in wire shields are positioned at isolating switch shield below, after expansion, the space of isolating switch shield below is divided into load side and mains side, two slots of isolating switch shield lay respectively at the top in load side space and mains side space;
The isolating switch shield of upper mask and lower mask, dynamic/static contact shield, the lead-in wire shield place of being connected are provided with the snap close of mutual correspondence.
Further, described upper mask and lower mask are to inserting after connection, and the width of the overlapped part of dynamic/static contact shield of upper mask and lower mask is not less than 15cm; The width of the corresponding overlapped part of lead-in wire shield of upper mask and lower mask is not less than 5cm.
Further, described isolating switch shield outer ledge is connected by fixture block and draw-in groove with alternate shield upper end.
The utility model has the advantages that: on, lower mask adopts high-strength insulating material to make, simple in structure, volume is little, lightweight, easy to operate, be applicable to all kinds of isolating switches, guaranteed isolating switch relatively and separately from, the problem of safe distance deficiency between three-phase isolation switch while having solved the live line working of distribution overhead transmission line, avoid operating personnel to touch charging equipment, reduce the usage quantity of insulated target, reduce work difficulty and construction cost, eliminate potential safety hazard, significantly shorten the operating time of workmen's altitude hot-line operation, improve operating efficiency.
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is elaborated.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is mask working state figure under the utility model.
Embodiment
In figure: 1, isolating switch shield, 2, alternate shield, 3, dynamic/static contact shield, 4, lead-in wire shield, 5, insulator, 6, mains side cable guide, 7, fixed contact, 8, moving contact, 9, load side cable guide, 10, isolating switch base plate.
Embodiment
As can be seen from Figure 1, the utility model is made up of upper mask, lower mask two parts, upper mask and lower shielding cover structure symmetry, and the relative plug-in mounting in inner side of two masks coordinates; Upper mask and lower mask form by isolating switch shield 1, alternate shield 2, dynamic/static contact shield 3, lead-in wire shield 4;
Isolating switch shield 1 is rectangle, in live line working process, hide between isolating switch base plate 10 and supporting insulator, realize the isolation at isolating switch base plate 10 and charged position, guarantee all insulation of high and low pressure current potential, play and prevent that operating personnel from touching earth electrode, ground fault occurs; On isolating switch shield 1, have two slots that are parallel to each other, the width of slot is identical with insulator porcelain patticoat path, slot one end is opened on isolating switch shield 1 inside edge, other end semicircular in shape and insulator 5 porcelain patticoat paths coincide, two socket center line level intervals are identical with the center distance of two supporting insulator porcelain knobs of isolating switch load side and mains side, and when mask uses, two slots are inserted into respectively on the porcelain patticoat of two supporting insulators of isolating switch; The upper end of isolating switch shield 1 outer ledge and alternate shield 2 is by fixture block and draw-in groove is vertical is connected, its connected mode is: isolating switch shield 1 outer ledge is provided with fixture block, alternate shield 2 upper ends have draw-in groove, and the fixture block of isolating switch shield 1 is inlaid in alternate shield 2 draw-in grooves; Due to the insulator sizes difference of different isolating switches, can, by changing isolating switch shield 1, coordinate the isolated switchgear of various models; Operating personnel and the maintenance isolating switch of adjacent phase and the problem of earth electrode safe distance deficiency when alternate shield 2 solves live line working (on distribution overhead transmission line between three-phase isolation switch at a distance of approximately 300 millimeters, because live line working personnel insulating gloves outside is with the anti-stab kid gloves of wearing, and prevent that pierce through kid gloves does not belong to insulating protection apparatus in live line working, may occur in moment the problem of safe distance deficiency in operation process);
The horizontal width of isolating switch shield 1 and alternate shield 2 is greater than isolating switch both sides lead-in wire connecting clamp spacing (being the distance between mains side cable guide 6 and load side cable guide 9) 20cm; After alternate shield 2 is highly greater than isolating switch and pulls open, insulator upper end to the distance 15cm(between moving contact be after isolating switch pulls open, the end of moving contact extends 15cm downwards), guarantee that " the special mask of isolating switch " can all be coated isolating switch;
Dynamic/static contact shield 3 is vertically articulated and connected at alternate shield 2 middle parts by hinge, and height is highly identical with alternate shield 2; Two lead-in wire shields 4 are vertically articulated and connected in alternate shield 2 left and right sides by hinge, and two lead-in wire shields 4 are positioned at the both sides of dynamic/static contact shield; Dynamic/static contact shield 3 and two lead-in wire shields 4 are positioned at isolating switch shield 1 below, after expansion, be load side and mains side by the spatial separation of isolating switch shield 1 below, two slots of isolating switch shield 1 lay respectively at the top in load side space and mains side space; The present embodiment is example for the mask of 10kV High Voltage Outdoor type isolating switch, the hinge axes of dynamic/static contact shield 3 is apart from the inward flange 8cm of isolating switch shield 1 load side slot (being the slot of the first side insulator of movable contact), away from charged fixed contact, while preventing operation because instrument or kid gloves form energized circuit; Two lead-in wire shields 4 are for covering protection between external lead wire and insulator; effectively limit the scope of activities of live line working personnel disconnecting lead-in wire; prevent the person electric shock injures and deaths that insulator breakdown causes; alternate shield 2 this lateral edges 17cm of lead-in wire shield 4 hinge axes distance of moving contact side; alternate shield 2 this lateral edges 25cm of lead-in wire shield 4 hinge axes distance of fixed contact side, two lead-in wire shield 4 lower limbs are positioned at top, both sides insulator lead-in wire wire clamp (being mains side cable guide 6 and load side cable guide 9).
In work progress, upper mask and lower mask are to inserting after connection, the width of the dynamic/static contact shield 3 overlapped parts of upper mask and lower mask is not less than 15cm, and the width of the lead-in wire shield 4 overlapped parts of upper mask and lower mask is not less than 5cm;
The isolating switch shield 1 of upper mask and lower mask, dynamic/static contact shield 3, lead-in wire shield 4 places of being connected are provided with the snap close of mutual correspondence, and snap close comprises and is the convex snap close of hook-shaped and the matrix snap close being mated; Closed block on the first side lead-in wire of upper mask stationary contact shield 4 is matrix snap close, and all the other are convex snap close, and the closed block on the lead-in wire shield 4 of the first side of lower mask stationary contact is convex snap close, and other is matrix snap close; Upper and lower mask, to inserting locking snap close in use procedure, prevents from causing " the special mask of isolating switch " to come off because of external force collision.
Operation principle:
When the utility model uses, be used in conjunction with by upper and lower mask, carrying out charged for replacement isolating switch, disconnecting lead-in wire, repair wire, remove in the courses of work such as foreign matter, first with utilizing the utility model to isolate A, B, C three-phase isolation switch.Operating process is as follows:
(1) two slots of lower mask are inserted on the first porcelain patticoat of isolating switch supporting insulator, as shown in Figure 2, again upper mask slot is arranged on lower mask inserting, the isolating switch shield of upper and lower mask is overlapped covers isolating switch, snap close on the isolating switch shield 1 of the upper and lower mask of locking, guarantee mask installation firmly, can not come off; Then with insulated target, all the other charging equipments of distribution overhead line in working range are wrapped, carry out, after the work such as insulation lead wire colligation, pulling open isolating switch, by dynamic and static contact separately.
(2) open the dynamic/static contact shield 3 of upper and lower mask, make the dynamic/static contact shield 3 of two masks overlapped, and the snap close of locking dynamic/static contact shield 3, guarantee that dynamic and static contact isolates completely, operating personnel can not encounter charged fixed contact by mistake.
(3) finally open respectively moving contact side and fixed contact side (being load side and mains side) four lead-in wire shields 4, and overlapped between two lead-in wire shield 4 snap closes are fastened, guarantee fixed contact and the isolation of circuit lead-in wire wire clamp, go between wire clamp isolation of moving contact and user, avoid operating personnel in the time of work because insulator breakdown causes electric shock.
The beneficial effects of the utility model:
(1) use isolating switch mask, can complete rapidly the masking work of isolating switch on overhead distribution, the operating efficiency such as charged breaking and connecting lead-in wire, charged for replacement isolating switch of the most often carrying out at present is significantly improved, shortened staff's the altitude effect time.To change 10kV overhead transmission line three-phase isolation switch as example, originally need three live line working staff with within 2.5 hours, completing the layout of safety measure and resuming work, within 1.1 hours, change isolating switch, adopt after this equipment only with within approximately 40 minutes, completing the layout of measure and resuming work.
(2) compared with prior art (isolating with insulated target), use mask to carry out the isolation of charging equipment, easy and simple to handle, quick, reduce labour intensity and work difficulty.
(3) only use 3 groups of isolating switch masks, complete fast covering of three-phase isolation switch, guarantee effective isolation of isolating switch and human body, while having avoided live line working personnel to work and charging equipment come in contact, especially avoided touching the dynamic and static contact of isolating switch and the insulator of damage in the time carrying out the work of breaking and connecting lead-in wire; Prevent that in construction, operating personnel accidentally injures with instrument the leaky that insulated target causes, and eliminated the potential safety hazard that does not sternly cause electric leakage due to insulated target parcel.
(4) the electric index such as the withstand voltage and mechanical strength of isolating switch mask exceedes insulated target, uses epoxy phenolics glass wool cloth board making, has durablely, and cost is low, maintainable good, reduce the advantages such as consuming cost.
(5) significantly reduce the usage quantity of other insulating protection materials (insulated target and accessories), saved maintenance cost.Take one group of 10kv isolating switch of charged for replacement as example, utilize prior art at least to need to use 35～40 insulated targets, use after the utility model equipment, can reduce by approximately 21 insulated targets; Insulated target price is about 2000 yuan/(average ten live line working damage 5 insulated targets) at present.
Finally should be noted that: above embodiment is used for illustrating that the technical solution of the utility model is not intended to limit; those skilled in the art modifies to execution mode or part technical characterictic is equal to replacement; and do not depart from the essence of technical solutions of the utility model, within all should being encompassed in the utility model scope required for protection.
Claims (3)
1. a distribution line isolating switch mask, is characterized in that: formed by upper mask, lower mask, and upper mask and lower shielding cover structure symmetry, the relative plug-in mounting in inner side coordinates; Upper mask and lower mask are by isolating switch shield (1), alternate shield (2), dynamic/static contact shield (3), lead-in wire shield (4) composition;
On isolating switch shield (1), have two slots that are parallel to each other, slot one end is opened on isolating switch shield (1) inside edge, other end semicircular in shape; The vertical connection of upper end of isolating switch shield (1) outer ledge and alternate shield (2);
Dynamic/static contact shield (3) is vertically articulated and connected at alternate shield (2) middle part, and two lead-in wire shields (4) are vertically articulated and connected in alternate shield (2) left and right sides; Dynamic/static contact shield (3) and two lead-in wire shields (4) are positioned at isolating switch shield (1) below, after expansion, the space of isolating switch shield (1) below is divided into load side and mains side, two slots of isolating switch shield (1) lay respectively at the top in load side space and mains side space;
The isolating switch shield (1) of upper mask and lower mask, dynamic/static contact shield (3), lead-in wire shield (4) place of being connected are provided with the snap close of mutual correspondence.
2. according to a kind of distribution line isolating switch mask described in claim 1, it is characterized in that: described upper mask and lower mask are to inserting after connection, and the width of the overlapped part of dynamic/static contact shield (3) of upper mask and lower mask is not less than 15cm; The width of the corresponding overlapped part of lead-in wire shield (4) of upper mask and lower mask is not less than 5cm.
3. according to a kind of distribution line isolating switch mask described in claim 1, it is characterized in that: described isolating switch shield (1) outer ledge is connected by fixture block and draw-in groove with alternate shield (2) upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320819489.6U CN203607749U (en) | 2013-12-13 | 2013-12-13 | Shielding cover for distribution-line disconnecting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320819489.6U CN203607749U (en) | 2013-12-13 | 2013-12-13 | Shielding cover for distribution-line disconnecting switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203607749U true CN203607749U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320819489.6U Expired - Lifetime CN203607749U (en) | 2013-12-13 | 2013-12-13 | Shielding cover for distribution-line disconnecting switch |
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| Country | Link |
|---|---|
| CN (1) | CN203607749U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762711A (en) * | 2016-05-13 | 2016-07-13 | 上海市南电力工程有限公司 | Insulating cover for lightning arrester support |
| CN105977849A (en) * | 2016-07-09 | 2016-09-28 | 国网山东省电力公司潍坊供电公司 | Insulating protective cover of isolating switch |
| CN107834408A (en) * | 2017-10-24 | 2018-03-23 | 国网浙江宁波市鄞州区供电公司 | On-pole switch band electrical bonding specific purpose tool |
| CN109787145A (en) * | 2019-01-18 | 2019-05-21 | 国网辽宁省电力有限公司鞍山供电公司 | 10kV on-load, which is more changed sides, isolates switching device and method |
-
2013
- 2013-12-13 CN CN201320819489.6U patent/CN203607749U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762711A (en) * | 2016-05-13 | 2016-07-13 | 上海市南电力工程有限公司 | Insulating cover for lightning arrester support |
| CN105977849A (en) * | 2016-07-09 | 2016-09-28 | 国网山东省电力公司潍坊供电公司 | Insulating protective cover of isolating switch |
| CN107834408A (en) * | 2017-10-24 | 2018-03-23 | 国网浙江宁波市鄞州区供电公司 | On-pole switch band electrical bonding specific purpose tool |
| CN107834408B (en) * | 2017-10-24 | 2024-05-14 | 国网浙江宁波市鄞州区供电公司 | Special tool for electrified lap joint of pole-mounted switch |
| CN109787145A (en) * | 2019-01-18 | 2019-05-21 | 国网辽宁省电力有限公司鞍山供电公司 | 10kV on-load, which is more changed sides, isolates switching device and method |
| CN109787145B (en) * | 2019-01-18 | 2024-02-06 | 国网辽宁省电力有限公司鞍山供电公司 | 10kV on-load replacement side phase isolating switch device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140521 |