CN104078269A - Load switch - Google Patents
Load switch Download PDFInfo
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- CN104078269A CN104078269A CN201310102390.9A CN201310102390A CN104078269A CN 104078269 A CN104078269 A CN 104078269A CN 201310102390 A CN201310102390 A CN 201310102390A CN 104078269 A CN104078269 A CN 104078269A
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- electrode assembly
- movable electrode
- fixed
- grounding electrode
- component
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses switch equipment, in particular relates to a load switch. The load switch comprises a fixed plate (1), a modular frame (2), a movable electrode main shaft (4), a grounding electrode main shaft (26), a contact sleeve (9), a movable electrode assembly (10), a movable electrode guide rod (8), a grounding electrode sleeve (25), a grounding electrode assembly (14), a fixed end assembly (21) and a grounding electrode guide rod (13). The load switch has the functions of favorable stability, high arc extinguishing capability, along service life, high accuracy, reliability, time saving and labor saving, is simple to assemble, and can be effectively produced at a large scale.
Description
Technical field
The present invention relates to a kind of switchgear, relate in particular to a kind of on-load switch.
Background technology
Gas-insulated switchgear has been widely used in height, middle pressure transmission and distribution network, can effectively must carry out the distribution of electric energy and the protection of circuit.Meeting switch is one of main element of gas-insulated switchgear, be installed in gas-insulated switchgear with totally enclosed type, be used for closing short circuit current and segmentation recombination current, conventionally adopt arc extinguishing structure, the vacuum type such as metal deion grid formula, air pressing type structure and vacuum type structure; Wherein air pressing type principle, produces the principle of high velocity air in order to cooling and extinguish arcs by Compressed Gas, and this structure arc extinguishing ability is strong, and especially middle high-pressure field has obtained more general application.
Mainly there is following shortcoming in existing pressure-operated load switch: plenum chamber is located in contact tube, and contact tube is because of insulating sleeve spatial limitation, and size is thick not, the therefore insufficient pressure of plenum chamber, and arc extinguishing ability is restricted; In dynamic and static contact, all need that arcing contact is set and conductive contact makes complex structure, product cost is higher; On-load switch arc control device are enclosed in insulating sleeve, cut-off rear insulating gas and cannot be upgraded, and useful life is extremely limited; Because dynamic/static contact is in the time being in contact with one another, can high-voltage arc and produce the extremely strong ability that impacts, and produce high temperature, cause dynamic/static contact place well damage, cause whole on-load switch seriously to shorten useful life; Be all generally independent production each other, and be assembling separately on equipment, cause assembling comparatively loaded down with trivial details, easily occur rigging error, under efficiency of assembling, cannot effectively form large-scale production.
Summary of the invention
The object of the present invention is to provide a kind of on-load switch, solved current on-load switch arc extinguishing limited in one's ability, complex structure, useful life is limited, and assembly process is loaded down with trivial details, and equipment precision is not high, the problem wasting time and energy.
For addressing the above problem, the technical solution used in the present invention is:
A kind of on-load switch, comprise fixed head, modular frame, movable electrode main shaft, grounding electrode main shaft, contact sleeve, movable electrode assembly, movable electrode guide post, ground electrode sleeve, grounding electrode assembly, fixed end sub-component and grounding electrode guide post
Wherein said modular frame is mainly joined end to end and is formed by an egative film and three lateral plates, described fixed head is arranged on the top of modular frame, described movable electrode main shaft runs through on first lateral plate the second lateral plate that modular frame is relative with grounding electrode main shaft, described contact sleeve is fixed on fixed head, described ground electrode sleeve is fixed on pleurella, fixed end sub-component is fixed on egative film, described movable electrode assembly is sleeved in contact sleeve and by movable electrode insulation arm and is connected on movable electrode main shaft by movable electrode guide post, movable electrode assembly bottom is suitable with contact jaw position, sub-component top, fixed end, described grounding electrode assembly is arranged in ground electrode sleeve and by grounding electrode insulation arm and is connected on grounding electrode main shaft by grounding electrode guide post, the bottom of grounding electrode assembly and sub-component sidepiece contact jaw position, fixed end are suitable, the end face contacting with fixed end sub-component on described movable electrode assembly is Mume flower contact, and the end face that grounding electrode assembly contacts with fixed end sub-component is Mume flower contact, described contact sleeve and movable electrode assembly form plenum chamber, described in the room sulfur hexafluoride insulating gas of calming the anger, in described movable electrode assembly, be provided with the gas channeling concave groove that is communicated with plenum chamber, the contact-making surface of described fixed end sub-component and movable electrode assembly, and be equipped with copper-tungsten layer on the contact-making surface of described fixed end sub-component and grounding electrode assembly.
Further technical scheme is, the direction of motion of described movable electrode assembly is mutually vertical with the end face that movable electrode assembly contacts with fixed end sub-component, and the direction of motion of described grounding electrode assembly is mutually vertical with the end face that grounding electrode assembly contacts with fixed end sub-component.
Further technical scheme is, described movable electrode main shaft and grounding electrode main shaft fix with elastic washer and first lateral plate the second lateral plate by main shaft copper sheathing and axle, and described ground electrode sleeve is fixed on pleurella by short circuit copper bar.
Further technical scheme is, described contact sleeve is by sleeve packing ring, packing ring, spring washer, cup head hexagon socket head cap screw and be fixed on fixed head with inlet wire copper bus-bar.
Further technical scheme is, described contact sleeve is insulating material moulding by casting, and fixed end sub-component is to be fixed on egative film by the sub-fixture in fixed end.
The beneficial effect that adopts technique scheme to produce is:
1, the Mume flower contact formula that the movable electrode assembly of this on-load switch and grounding electrode assembly adopt, while making to close a floodgate, the pressure direction between dynamic/static contact is vertical with the direction of motion, and spring when contact is connected is little, after closing a floodgate, conductive contact connects more reliable, Electric Field Distribution is more even than any cutter formula structure, and short circuit current by time, because the sense of current between fingertip and between fingertip and conducting rod is consistent, fingertip is pressed to conducting rod by electric power trend, and dynamic stability is better.
2, the movable electrode assembled of this on-load switch is in insulating sleeve, after being housed in insulating sleeve, guide post and movable electrode assembly also in sleeve, form a plenum chamber, in sub-switching operation, movable electrode moves upward fast, sulphur hexafluoride insulating gas in compression air pressing type, and blow to fast electric arc by the special gas channeling concave groove in lower end; Tolerance abundance in this structure plenum chamber, air-flow spouting velocity is fast, and directivity is accurate, and connecting-disconnecting function improves greatly.
3; on contact tip, all select copper-tungsten material; because plenum chamber is located in the contact sleeve of insulating material; this structure can be blown out electric arc by the gas in plenum chamber effectively fast; avoid short trouble; fixed end in fresh sulphur hexafluoride insulating gas, effectively extends useful life and the protective capability of on-load switch always.
4; modular frame; make whole on-load switch become a standalone module in switchgear main body; after can in advance whole on-load switch being assembled separately; be assemblied in again on equipment; aspect assembling and inspection, the method for assembling in main body than traditional mode is both simple, reliably saves trouble and laborsaving, can effectively carry out large-scale production.
Brief description of the drawings
Fig. 1 is the structural perspective of a kind of on-load switch of the present invention.
Fig. 2 is the structural front view of a kind of on-load switch of the present invention.
Fig. 3 is the A-A cutaway view of Fig. 2.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1, Fig. 2 and Fig. 3 show an embodiment of a kind of on-load switch of the present invention: a kind of on-load switch, comprise fixed head 1, modular frame 2, movable electrode main shaft 4, grounding electrode main shaft 26, contact sleeve 9, movable electrode assembly 10, movable electrode guide post 8, ground electrode sleeve 25, grounding electrode assembly 14, fixed end sub-component 21 and grounding electrode guide post 13
Wherein said modular frame 2 is mainly joined end to end and is formed by an egative film and three lateral plates, described fixed head 1 is arranged on the top of modular frame 2, described movable electrode main shaft 4 runs through on first lateral plate the second lateral plate that modular frame 2 is relative with grounding electrode main shaft 26, described contact sleeve 9 is fixed on fixed head 1, described ground electrode sleeve 25 is fixed on pleurella, fixed end sub-component 21 is fixed on egative film, described movable electrode assembly 10 is sleeved in contact sleeve 9 and is connected on movable electrode main shaft 4 by movable electrode insulation arm 24 by movable electrode guide post 8, movable electrode assembly 10 bottoms and fixed end sub-component 21 contact jaw positions, top are suitable, described grounding electrode assembly 14 is arranged in ground electrode sleeve 25 and is connected on grounding electrode main shaft 26 by grounding electrode insulation arm 11 by grounding electrode guide post 13, the bottom of grounding electrode assembly 14 and fixed end sub-component 21 sidepiece contact jaw positions are suitable, the end face contacting with fixed end sub-component 21 on described movable electrode assembly 10 is Mume flower contact, and the end face that grounding electrode assembly 14 contacts with fixed end sub-component 21 is Mume flower contact, described contact sleeve 9 and movable electrode assembly 10 form plenum chamber 23, and the interior sulphur hexafluoride insulating gas of described plenum chamber 23 is provided with the gas channeling concave groove 22 that is communicated with plenum chamber 23 in described movable electrode assembly 10, the contact-making surface of described fixed end sub-component 21 and movable electrode assembly 10, and be equipped with copper-tungsten layer on the contact-making surface of described fixed end sub-component 21 and grounding electrode assembly 14.
Originally meeting switch entirety is a modular organization, all being assemblied on modular frame 2, be installed in airtight gas tank by the corresponding interface of enclosed gas-insulated switchgear, convenience, reliability, the batch production efficiency of assembling are all that other like products are incomparable again; Plenum chamber 23 is loaded in fully closed sulfur hexafluoride gas-insulating switchgear, by insulation property and the arc extinguishing ability of sulfur hexafluoride gas excellence, realize the normal combined floodgate sub-switching operation of on-load switch, plenum chamber 23 is interior large-minded, the air-flow spouting velocity of compression is exceedingly fast, the gas channeling concave groove 22 of unique design, makes arc extinguishing ability accurate again soon, significantly improves connecting-disconnecting function and useful life; The end face of the end face of movable electrode assembly 10 and grounding electrode assembly 14 is Mume flower contact formula structure, in closing a floodgate, fully effectively contacts with fixed end sub-component 21, and contact-making surface is even, makes Electric Field Distribution also more even.
Wherein the movable electrode insulation arm 24 of on-load switch and grounding electrode insulation arm 11 are premium insulation part, movable electrode main shaft 4 and grounding electrode main shaft 26 are metalwork, closing, point operating system is alternate with other insulating parts, avoid alternate larger Leakage Current, improved the stable and reliability of high load capacity switch operation.
Another embodiment of a kind of on-load switch according to the present invention, the direction of motion of described movable electrode assembly 10 is mutually vertical with the end face that movable electrode assembly 10 contacts with fixed end sub-component 21, the direction of motion of described grounding electrode assembly 14 is mutually vertical with the end face that grounding electrode assembly 14 contacts with fixed end sub-component 21, such effect is can remain when contact-making surface is in contact with one another, all that face contacts with face simultaneously, instead of point and point or point and face, ensure the even of electric field.
Another preferred embodiment of a kind of on-load switch according to the present invention, described movable electrode main shaft 4 and grounding electrode main shaft 26 fix with elastic washer 5 and first lateral plate the second lateral plate by main shaft copper sheathing 3 and axle, wherein main shaft copper sheathing 3 and axle mainly play insulation and fastening effect with elastic washer 5, and described ground electrode sleeve 25 is fixed on pleurella by short circuit copper bar 12.
Another preferred embodiment of a kind of on-load switch according to the present invention, described contact sleeve 9 is by sleeve packing ring 18, packing ring 17, spring washer 16, cup head hexagon socket head cap screw 15 and be fixed on fixed head 1 with inlet wire copper bus-bar 6.
Another preferred embodiment of a kind of on-load switch according to the present invention, described contact sleeve 9 is insulating material moulding by casting, fixed end sub-component 21 is to be fixed on egative film by the sub-fixture 20 in fixed end.
Here it is worthy of note: determine other metallic conductors of use or the varying sized size of contact terminal assembly 21, grounding electrode assembly 14, movable electrode assembly 10, still can have not higher than electric property of the present invention; As cancel grounding electrode assembly 14, grounding electrode guide post 13, short circuit copper bar 12, grounding electrode insulation arm 11; become the on-load switch that only possesses on/off switch function and cancel grounding function, be not limited to technical characterictic of the present invention according to using therefore the present invention protection to comprise in the same just distribution system of user's request.
Although with reference to multiple explanatory embodiment of the present invention, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other amendment and execution modes, within these amendments and execution mode will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to the building block of subject combination layout and/or layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.
Claims (5)
1. an on-load switch, it is characterized in that: comprise fixed head (1), modular frame (2), movable electrode main shaft (4), grounding electrode main shaft (26), contact sleeve (9), movable electrode assembly (10), movable electrode guide post (8), ground electrode sleeve (25), grounding electrode assembly (14), fixed end sub-component (21) and grounding electrode guide post (13), wherein said modular frame (2) is mainly joined end to end and is formed by an egative film and three lateral plates, described fixed head (1) is arranged on the top of modular frame (2), described movable electrode main shaft (4) runs through on first lateral plate the second lateral plate that modular frame (2) is relative with grounding electrode main shaft (26), described contact sleeve (9) is fixed on fixed head (1), described ground electrode sleeve (25) is fixed on pleurella, fixed end sub-component (21) is fixed on egative film, described movable electrode assembly (10) is sleeved in contact sleeve (9) and is connected on movable electrode main shaft (4) by movable electrode insulation arm (24) by movable electrode guide post (8), movable electrode assembly (10) bottom is suitable with contact jaw position, fixed end sub-component (21) top, described grounding electrode assembly (14) is arranged in ground electrode sleeve (25) and is connected on grounding electrode main shaft (26) by grounding electrode insulation arm (11) by grounding electrode guide post (13), the bottom of grounding electrode assembly (14) and fixed end sub-component (21) sidepiece contact jaw position are suitable, described movable electrode assembly (10) end face upper and that fixed end sub-component (21) contacts is Mume flower contact, and the end face that grounding electrode assembly (14) contacts with fixed end sub-component (21) is Mume flower contact, described contact sleeve (9) and movable electrode assembly (10) form plenum chamber (23), the interior sulphur hexafluoride insulating gas of described plenum chamber (23), is provided with the gas channeling concave groove (22) that is communicated with plenum chamber (23) in described movable electrode assembly (10), the contact-making surface of described fixed end sub-component (21) and movable electrode assembly (10), and be equipped with copper-tungsten layer on the contact-making surface of described fixed end sub-component (21) and grounding electrode assembly (14).
2. a kind of on-load switch according to claim 1, it is characterized in that: the direction of motion of described movable electrode assembly (10) is mutually vertical with the end face that fixed end sub-component (21) contacts with movable electrode assembly (10), the direction of motion of described grounding electrode assembly (14) is mutually vertical with the end face that fixed end sub-component (21) contacts with grounding electrode assembly (14).
3. a kind of on-load switch according to claim 1, it is characterized in that: described movable electrode main shaft (4) and grounding electrode main shaft (26) by main shaft copper sheathing (3) and for axle elastic washer (5) and first lateral plate the second lateral plate fix, described ground electrode sleeve (25) is fixed on pleurella by short circuit copper bar (12).
4. a kind of on-load switch according to claim 1, is characterized in that: described contact sleeve (9) is by sleeve packing ring (18), packing ring (17), spring washer (16), cup head hexagon socket head cap screw (15) and be fixed on fixed head (1) with inlet wire copper bus-bar (6).
5. a kind of on-load switch according to claim 1, is characterized in that: described contact sleeve (9) is insulating material moulding by casting, and fixed end sub-component (21) is to be fixed on egative film by the sub-fixture in fixed end (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310102390.9A CN104078269B (en) | 2013-03-27 | 2013-03-27 | A kind of on-load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310102390.9A CN104078269B (en) | 2013-03-27 | 2013-03-27 | A kind of on-load switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104078269A true CN104078269A (en) | 2014-10-01 |
| CN104078269B CN104078269B (en) | 2017-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310102390.9A Active CN104078269B (en) | 2013-03-27 | 2013-03-27 | A kind of on-load switch |
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| Country | Link |
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| CN (1) | CN104078269B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050150869A1 (en) * | 2003-12-02 | 2005-07-14 | Vei Power Distribution S.P.A. | Isolator/circuit-breaker device for electric substations |
| CN101819903A (en) * | 2010-04-26 | 2010-09-01 | 南京业基电气设备有限公司 | Dynamic/static contact device of main circuit of load switch |
| CN102237220A (en) * | 2010-04-26 | 2011-11-09 | 南京业基电气设备有限公司 | Grounding loop moving/static contact device for load switch |
| CN102629530A (en) * | 2012-03-30 | 2012-08-08 | 厦门华电开关有限公司 | Arc-extinguishing load switch and switch equipment |
| US20120312668A1 (en) * | 2010-02-09 | 2012-12-13 | Siemens Aktiengesellschaft | Electric switchgear |
| CN203118847U (en) * | 2013-03-27 | 2013-08-07 | 上海中亚电气有限公司 | Load switch |
-
2013
- 2013-03-27 CN CN201310102390.9A patent/CN104078269B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050150869A1 (en) * | 2003-12-02 | 2005-07-14 | Vei Power Distribution S.P.A. | Isolator/circuit-breaker device for electric substations |
| US20120312668A1 (en) * | 2010-02-09 | 2012-12-13 | Siemens Aktiengesellschaft | Electric switchgear |
| CN101819903A (en) * | 2010-04-26 | 2010-09-01 | 南京业基电气设备有限公司 | Dynamic/static contact device of main circuit of load switch |
| CN102237220A (en) * | 2010-04-26 | 2011-11-09 | 南京业基电气设备有限公司 | Grounding loop moving/static contact device for load switch |
| CN102629530A (en) * | 2012-03-30 | 2012-08-08 | 厦门华电开关有限公司 | Arc-extinguishing load switch and switch equipment |
| CN203118847U (en) * | 2013-03-27 | 2013-08-07 | 上海中亚电气有限公司 | Load switch |
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| Publication number | Publication date |
|---|---|
| CN104078269B (en) | 2017-12-05 |
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