CN102969193B - A kind of ring main unit direct-acting vacuum switching device - Google Patents
A kind of ring main unit direct-acting vacuum switching device Download PDFInfo
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- CN102969193B CN102969193B CN201210454602.5A CN201210454602A CN102969193B CN 102969193 B CN102969193 B CN 102969193B CN 201210454602 A CN201210454602 A CN 201210454602A CN 102969193 B CN102969193 B CN 102969193B
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Abstract
The invention discloses a kind of ring main unit direct-acting vacuum switching device, comprise housing, pull bar and be located at the vacuum switch tube of enclosure interior, described pull bar comprises the first pull bar and the second pull bar, described vacuum switch tube comprises the first vacuum switch tube and the second vacuum switch tube, described first pull bar is connected with the second vacuum switch tube with the first corresponding vacuum switch tube respectively with one end of the second pull bar, the other end is connected with operating mechanism, spacer assembly and switching-off device is provided with between described first pull bar and the first vacuum switch tube, lower left quarter and the right side central of described housing are equipped with cylindrical hole, wherein be provided with input terminal in lower left quarter cylindrical hole, outlet terminal is provided with in right side central cylindrical hole.Beneficial effect of the present invention is: can realize ring main unit major loop by mechanical translation and built-in spacer assembly and switching-off device and disconnect and isolation, and effectively the closing of short circuit current when realizing carrying ground by the second vacuum switch tube, effective grounding when there is arc protection function and easily realize maintenance load.
Description
Technical field
The present invention relates to High-Voltage Electrical Appliances field, more specifically, relate to a kind of solid insulation ring main unit Direct Action Type high-pressure vacuum switch device.
Background technology
Ring main unit is electric equipment conventional in a kind of ring network power supply, and its core devices is on-load switch and fuse, and because ring main unit is set up on distribution branch road, ring main unit is also considered to a kind of outlet switch cabinet, is the important switchgear that ring network power supply and terminal are powered.Because ring main unit is particularly suitable for being used in the occasion that long-term stability is powered or high-voltage switch gear infrequently operates, and it is little to have the simple volume of structure, the features such as reliable easy-maintaining, in recent years, be able to extensive utilization, especially solid insulation ring main unit is put into State Grid Corporation of China's No. 1285 files and State Grid Corporation of China " 12 " planning, and its development trend receives industry greatly and pays close attention to.
Ring main unit is generally divided into air insulation and SF6 to insulate two kinds, and for a deciliter load current, control and protection cut-offs the charging current of short circuit current, no-load transformer electric current and overhead transmission line and cable line.Its on-load switch mainly contains air-generating, air pressing type, vacuum type and SF6 formula, use SF6 formula switch and vacuum switch in a large number at present, but because SF6 is a kind of artificial inert gas, easily be mixed into the poisonous gas such as sulfur fluoride and itself be also a kind of greenhouse gas, its use is subject to more and more strict supervision, the day by day ripe and vacuum switch of simultaneous Vacuum Relay Technique has the features such as life-span long, anti-interference good, small in volume, becomes the main flow in market just gradually.
Looped network cabinet switch General Requirements three station, i.e. closing position, isolated bit, ground connection position.Wherein air-generating, air pressing type and SF6 formula on-load switch easily realize three stations, and vacuum switch is because fracture is apart from little, cannot isolation fracture, therefore the ring main unit of vacuum switch can add that an isolating switch and vacuum switch are contacted usually, to form isolation fracture, this mode obviously needs additionally to increase isolating switch and could isolate by completing circuit, has both added cost, and has also been inconvenient to install.
There is certain defect in disclosed solid insulation ring main unit switch at present.Such as: the air insulation isolating switch of above isolating pattern, it closes short circuit current action and relies on main switch to complete, and operating process is loaded down with trivial details; Although the air insulation isolating switch of lower isolation pattern is provided with three stations, can direct ground connection, but it closes the poor effect of short circuit current.
Summary of the invention
The object of the invention is to propose a kind of ring main unit direct-acting vacuum switching device, ring main unit major loop can be realized by mechanical translation and built-in spacer assembly to disconnect and isolation, complete short circuit current effectively to close, and effectively closing of short circuit current when earthy vacuum switch realizes carrying ground can be connected by leading-out terminal, thus effective grounding when realizing maintenance load.
For reaching this object, the present invention by the following technical solutions:
A kind of ring main unit direct-acting vacuum switching device, comprise housing, pull bar and be located at the vacuum switch tube of enclosure interior, described pull bar comprises the first pull bar and the second pull bar, first pull bar is positioned on the left of the second pull bar, described vacuum switch tube comprises the first vacuum switch tube and the second vacuum switch tube, first vacuum switch tube is positioned on the left of the second vacuum switch tube, described first pull bar is connected with the second vacuum switch tube with the first corresponding vacuum switch tube respectively with one end of the second pull bar, and the other end is connected with operating mechanism;
Be provided with spacer assembly and switching-off device between described first pull bar and the first vacuum switch tube, described spacer assembly is located on switching-off device;
Lower left quarter and the right side central of described housing are equipped with cylindrical hole, wherein be provided with input terminal in lower left quarter cylindrical hole, input terminal is connected with the static conductive rod of the first vacuum switch bottom, outlet terminal is provided with in right side central cylindrical hole, outlet terminal is connected with soft ribbons one terminal bolt, the described soft ribbons other end is connected with the insulating contact in spacer assembly, is consolidated on the first pull bar.
Further, described spacer assembly comprises insulating contact seat and insulating contact, and described insulating contact seat inside is provided with chute, and insulating contact coordinates with insulating contact seat slide.
Preferably, described insulating contact periphery is provided with multiple tracks groove, is provided with spring contact in groove.
Further, the evagination slide block that described switching-off device comprises holder, sluice separating spring and spacing pressing plate and is located on insulating contact seat, described holder inside is provided with chute, chute coordinates with evagination skid, described sluice separating spring is positioned at evagination slide block bottom, described spacing pressing plate is positioned at evagination slide block top, and holder is bolted with spacing pressing plate and is connected.
Further, the first described vacuum switch tube and the second vacuum switch tube top are equipped with moving conductive rod, and its underpart is equipped with static conductive rod; Described moving conductive rod and one end of static conductive rod are all placed in vacuum switch tube pipe, and pipe inner terminal place corresponding is with it respectively equipped with moving contact and fixed contact, and its other end is all placed in outside vacuum switch tube.
Further, the moving conductive rod tube external terminal of the first described vacuum switch tube is connected with insulating contact seat bolt, and the pipe external terminal of its static conductive rod is connected by set bolt with input terminal; The moving conductive rod tube external terminal of the second described vacuum switch tube is connected with the second pull rod screw, and the pipe external terminal of its static conductive rod is connected by set bolt with grounding copper bar.
Further, described soft ribbons is consolidated in the moving conductive rod tube external terminal junction of the second pull bar and the second vacuum switch tube.
Preferably, described operating mechanism is arranged in ring main unit, is positioned at above switching device housing, the first pull bar and the second pull bar and respective powder operation device suitable.
Preferably, the first described vacuum tube and the second vacuum tube pipe are wrapped with resilient coating.
Optionally, it is characterized in that, when described first vacuum switch tube (2), the second vacuum switch tube (16), spacer assembly and switching-off device are assembled, all adopt sealing technology.
Beneficial effect of the present invention is:
(1) described ring main unit Direct Action Type switching device is provided with spacer assembly, solves vacuum switch because fracture is apart from little, cannot the problem of isolation fracture;
(2) be provided with switching-off device, make the operation of the first pull bar have the double effects of isolation and separating brake;
(3) described spring contact is connected with insulating contact seat sliding conduction, not only can not produce electric arc, and enhances the reliability closing short circuit current;
(4) utilize injection technique to be embedded in insulation shell by various conductive insert, compact conformation volume is little;
(5) insulation shell adopts polycarbonate or nylon-type etc. to have the material of good insulating performance and mechanical strength properties, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the "on" position schematic diagram of the looped network cabinet switch device that the specific embodiment of the invention provides;
Fig. 2 is the isolation schematic diagram of the looped network cabinet switch device that the specific embodiment of the invention provides;
Fig. 3 is the ground state schematic diagram of the looped network cabinet switch device that the specific embodiment of the invention provides;
Fig. 4 is the switching-off device structural representation of the looped network cabinet switch device that the specific embodiment of the invention provides.
In figure: 1, input terminal; 2, the first vacuum switch tube; 3, fixed contact; 4, moving contact; 5, bolt; 6, sluice separating spring; 7, holder; 8, insulating contact seat; 9, spring contact; 10, insulating contact; 11, soft ribbons; 12, housing; 13, the first pull bar; 14, the second pull bar; 15, there is terminal; 16, the second vacuum switch tube; 17, moving contact; 18, fixed contact; 19, grounding copper bar; 20, spacing pressing plate; 21, evagination slide block.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
With reference to shown in Fig. 1-4, in the present embodiment, a kind of ring main unit direct-acting vacuum switching device, comprise housing 12, pull bar and be located at the vacuum switch tube of housing 12 inside, described pull bar comprises the first pull bar 13 and the second pull bar 14, first pull bar 13 is positioned on the left of the second pull bar 14, described vacuum switch tube comprises the first vacuum switch tube 2 and the second vacuum switch tube 16, first vacuum switch tube 2 is positioned on the left of the second vacuum switch tube 12, described first vacuum switch tube 2 and the inner fracture of the second vacuum switch tube 16 are vacuum fracture, first vacuum switch tube 2 is main switch, described first pull bar 13 is connected with the second vacuum switch tube 12 with the first corresponding vacuum switch tube 2 respectively with one end of the second pull bar 14, the other end is connected with operating mechanism.
The first described vacuum switch tube and the second vacuum switch tube top are equipped with moving conductive rod, and its underpart is equipped with static conductive rod; The described moving conductive rod of the first vacuum switch tube 2 and one end of static conductive rod are all placed in the first vacuum switch tube 2 manages, and pipe inner terminal place corresponding is with it respectively equipped with moving contact 4 and fixed contact 3, and its other end is all placed in outside the first vacuum switch tube 2; The described moving conductive rod of the second vacuum switch tube 16 and one end of static conductive rod 19 are all placed in the first vacuum switch tube 16 manages, corresponding pipe inner terminal place is respectively equipped with moving contact 17 and fixed contact 18, its other end is all placed in outside the second vacuum switch tube 16, and the fracture between described dynamic/static contact is vacuum fracture.
The moving conductive rod tube external terminal of the first described vacuum switch tube 16 is connected by bolt 5 with insulating contact seat 8, and the pipe external terminal of its static conductive rod is connected by set bolt with input terminal 1; The moving conductive rod tube external terminal of the second described vacuum switch tube 16 is threaded with the second pull bar 14, and the pipe external terminal of its static conductive rod 19 is connected by set bolt with grounding copper bar.
The first described vacuum switch tube 2 and the second vacuum switch tube 16 pipe are wrapped with resilient coating and adopt sealing technology, conductive insert is closely connected with housing, form a semiclosed module, utilize injection technique to be embedded in insulation shell by various conductive insert, make whole component compact volume little.
Be provided with spacer assembly and switching-off device between described first pull bar 13 and the first vacuum switch tube 2, described spacer assembly is located on switching-off device.
Described spacer assembly comprises insulating contact seat 8 and insulating contact 10, described insulating contact seat 8 inside is provided with chute, insulating contact 10 coordinates with slide, and when insulating contact 10 skids off chute, the fracture between insulating contact 10 and insulating contact seat 8 is air gap.Described insulating contact 10 periphery is provided with multiple tracks groove, be provided with spring contact 9 in groove, insulating contact 10 is connected as sliding conduction by spring contact 9 with insulating contact seat 8, when moment opened a sluice gate by the first vacuum tube, spring contact 9 still conducts with insulating contact seat 8, and period produces without electric arc.In addition, insulating contact 10 is connected with the first stay-bolt.
The evagination slide block 21 that described switching-off device comprises holder 7, sluice separating spring 6 and spacing pressing plate 20 and is located on insulating contact seat 8; Described holder 7 inside is provided with chute, and chute and evagination slide block 21 are slidably matched, and described sluice separating spring 6 is positioned at evagination slide block 21 bottom, and described spacing pressing plate is positioned at evagination slide block 21 top, and holder 7 is bolted with spacing pressing plate 20 and is connected.Holder 7 be in advance sealing in insulation shell, the motion of the evagination slide block 21 on insulating contact seat 8 is limited by spacing pressing plate 20 fixed thereon, when first vacuum switch tube is opened a sluice gate, the motion upwards of its moving conductive rod is limited, complete separating brake work, in addition due to the restriction of spacing pressing plate 20, sluice separating spring 6 is in its pre-compressed state, has tension force upwards.
Lower left quarter and the right side central of described housing 12 are equipped with cylindrical hole, wherein be provided with input terminal 1 in lower left quarter cylindrical hole, input terminal 1 is connected with the static conductive rod of the first vacuum switch tube 2 bottom, outlet terminal 15 is provided with in right side central cylindrical hole, outlet terminal 15 is connected with soft ribbons 11 1 terminal bolt, outlet terminal 15 and soft ribbons 11 conduct, described soft ribbons 11 other end is connected with the insulating contact 10 in spacer assembly, soft ribbons 11 and insulating contact 10 conduct, be consolidated on the first pull bar 13, in the middle part of soft ribbons 11, place to the right is consolidated in the moving conductive rod external terminal junction of the second pull bar 14 and the second vacuum switch tube 16, conduct with moving conductive rod.
Described operating mechanism is arranged in ring main unit, is positioned at above switching device housing 12, the first pull bar 13 and the second pull bar 14 suitable with respective powder operation device, powder operation device completes the actions such as separating brake, folding, isolation and ground connection for controlling ring main unit.
During actual production, housing, the first pull bar and the second pull bar all adopt insulating material to make, its middle shell preferred epoxy material, also polycarbonate or nylon-type etc. can be used to have the material of good insulating performance and mechanical strength, the installation of main components adopts sealing technology, utilizes injection technique to be fixed in insulation shell by each conductive insert.
During concrete use, with reference to the "on" position schematic diagram of Fig. 1 looped network cabinet switch device, as shown in the figure, first vacuum switch tube 2 is in closing position, now insulating contact 10 is embedded in insulating contact seat 8, conduct with the moving conductive rod of the first vacuum switch tube 2, first vacuum switch tube 2 is in "on" position, its fixed contact 3 and moving contact 4 close contact and conducting under the effect of operating mechanism switching force, now the second vacuum switch tube 16 is in open position, its fixed contact 18 separates under the effect of operating mechanism with moving contact 17, outlet terminal and earth potential are isolated, now input terminal 1 and external loading conduct, looped network is powered to external loading.
With reference to the isolation schematic diagram of Fig. 2 looped network cabinet switch device, operating mechanism drives the first pull bar 13 to move upward, now under the effect of switching-off device, the dynamic/static contact of the first vacuum switch tube 2 has been separated separating brake action, first vacuum switch tube 2 disconnects with input terminal 1, electric arc is produced in dynamic/static contact separation place, but now insulating contact 10 and insulating contact seat 8 do not depart from completely, continue and load conduction, therefore can not electric arc be produced between insulating contact 10 and insulating contact seat 8 in power process; First pull bar 13 continues to move upward, when after arc extinction in the first vacuum switch tube, insulating contact seat 8 reaches the restriction position at spacing pressing plate 20 place, no longer move upward, now insulating contact 10 starts to be separated with insulating contact seat 8, and the first pull bar 13 continues to move up to shown position, now has larger air gap between insulating contact 8 and insulating contact seat, insulating contact 8 arrives safe insulation distance, completes isolation.Now load and high-tension electricity bus completely isolated, load dead electricity.
With reference to the isolation schematic diagram of Fig. 2 looped network cabinet switch device, when the maintenance of load needs or other reasons need ground connection, operating mechanism drives the second pull bar 14, and the second vacuum switch tube 16 is closed a floodgate, and its dynamic/static contact conducts, load and ground conductive.Now, the first pull bar 13 is in isolation position.
The present invention is described by embodiment, and those skilled in the art know, without departing from the spirit and scope of the present invention, can carry out various change or equivalence replacement to these characteristic sum embodiments.In addition, under guidance of the present invention, can modify to adapt to concrete situation and material to these characteristic sum embodiments and not depart from the spirit and scope of the present invention.Therefore, the present invention is not by the restriction of specific embodiment disclosed herein, and the embodiment in the claim of all the application of falling into all belongs to the scope of protection of the invention.
Claims (8)
1. a ring main unit direct-acting vacuum switching device, comprises housing (12), pull bar and is located at the inner vacuum switch tube of housing (12), it is characterized in that:
Described pull bar comprises the first pull bar (13) and the second pull bar (14), first pull bar (13) is positioned at the second pull bar (14) left side, described vacuum switch tube comprises the first vacuum switch tube (2) and the second vacuum switch tube (16), first vacuum switch tube (2) is positioned at the second vacuum switch tube (12) left side, described first pull bar (13) is connected with the second vacuum switch tube (12) with corresponding the first vacuum switch tube (2) respectively with one end of the second pull bar (14), and the other end is connected with operating mechanism;
Be provided with spacer assembly and switching-off device between described first pull bar (13) and the first vacuum switch tube (2), described spacer assembly is located on switching-off device;
Lower left quarter and the right side central of described housing (12) are equipped with cylindrical hole, wherein be provided with input terminal (1) in lower left quarter cylindrical hole, input terminal (1) is connected with the static conductive rod of the first vacuum switch tube (2) bottom, outlet terminal (15) is provided with in right side central cylindrical hole, outlet terminal (15) is connected with soft ribbons (11) terminal bolt, the other end of described soft ribbons (11) is connected with the insulating contact (10) in spacer assembly, is consolidated on the first pull bar (13);
Described spacer assembly comprises insulating contact seat (8) and insulating contact (10), described insulating contact seat (8) inside is provided with chute, insulating contact (10) coordinates with slide, described insulating contact (10) periphery is provided with multiple tracks groove, is provided with spring contact (9) in groove.
2. ring main unit direct-acting vacuum switching device according to claim 1, it is characterized in that, described switching-off device comprises holder (7), sluice separating spring (6) and spacing pressing plate (20) and the evagination slide block (21) be located on insulating contact seat (8), described holder (7) inside is provided with chute, chute and evagination slide block (21) are slidably matched, described sluice separating spring (6) is positioned at evagination slide block (21) bottom, described spacing pressing plate is positioned at evagination slide block (21) top, holder (7) is bolted with spacing pressing plate (20) and is connected.
3. ring main unit direct-acting vacuum switching device according to claim 1, is characterized in that, the first described vacuum switch tube and the second vacuum switch tube top are equipped with moving conductive rod, and its underpart is equipped with static conductive rod;
The described moving conductive rod of the first vacuum switch tube (2) and one end of static conductive rod are all placed in the first vacuum switch tube (2) pipe, pipe inner terminal place corresponding is with it respectively equipped with moving contact (4) and fixed contact (3), and its other end is all placed in the first vacuum switch tube (2) outward;
The moving conductive rod of described second vacuum switch tube (16) and one end of static conductive rod (19) are all placed in the first vacuum switch tube (16) pipe, corresponding pipe inner terminal place is respectively equipped with moving contact (17) and fixed contact (18), and its other end is all placed in the second vacuum switch tube (16) outward.
4. ring main unit direct-acting vacuum switching device according to claim 3, it is characterized in that, the moving conductive rod tube external terminal of described first vacuum switch tube (16) is connected by bolt (5) with insulating contact seat (8), and the pipe external terminal of its static conductive rod is connected by set bolt with input terminal (1);
The moving conductive rod tube external terminal of described second vacuum switch tube (16) is threaded with the second pull bar (14), and the pipe external terminal of its static conductive rod (19) is connected by set bolt with grounding copper bar.
5. ring main unit direct-acting vacuum switching device according to claim 1, it is characterized in that, described soft ribbons (11) is consolidated in the moving conductive rod tube external terminal junction of the second pull bar (14) and the second vacuum switch tube (16).
6. ring main unit direct-acting vacuum switching device according to claim 1, it is characterized in that, described operating mechanism is arranged in ring main unit, be positioned at switching device housing (12) top, the first pull bar (13) and the second pull bar (14) and respective powder operation device suitable.
7. ring main unit direct-acting vacuum switching device according to claim 1, is characterized in that, described the first vacuum switch tube (2) and the second vacuum switch tube (16) pipe are wrapped with resilient coating.
8. the ring main unit direct-acting vacuum switching device according to claim 1 or 7, it is characterized in that, when described first vacuum switch tube (2), the second vacuum switch tube (16), spacer assembly and switching-off device are assembled, all adopt sealing technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210454602.5A CN102969193B (en) | 2012-11-13 | 2012-11-13 | A kind of ring main unit direct-acting vacuum switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210454602.5A CN102969193B (en) | 2012-11-13 | 2012-11-13 | A kind of ring main unit direct-acting vacuum switching device |
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| Publication Number | Publication Date |
|---|---|
| CN102969193A CN102969193A (en) | 2013-03-13 |
| CN102969193B true CN102969193B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210454602.5A Active CN102969193B (en) | 2012-11-13 | 2012-11-13 | A kind of ring main unit direct-acting vacuum switching device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201788877U (en) * | 2010-07-21 | 2011-04-06 | 广西银河迪康电气有限公司 | Multi-station high-voltage switch |
| CN201804723U (en) * | 2009-12-16 | 2011-04-20 | 上海思源高压开关有限公司 | Contact connecting mechanism |
| CN102110956A (en) * | 2010-12-14 | 2011-06-29 | 北京清畅电力技术股份有限公司 | Novel solid insulated switch |
| CN102543561A (en) * | 2012-01-04 | 2012-07-04 | 苏州朗格电气有限公司 | Closing holding device for vacuum circuit breaker |
| CN203055767U (en) * | 2012-11-13 | 2013-07-10 | 北京京东方真空电器有限责任公司 | Ring main unit directly-operated type vacuum switchgear |
-
2012
- 2012-11-13 CN CN201210454602.5A patent/CN102969193B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201804723U (en) * | 2009-12-16 | 2011-04-20 | 上海思源高压开关有限公司 | Contact connecting mechanism |
| CN201788877U (en) * | 2010-07-21 | 2011-04-06 | 广西银河迪康电气有限公司 | Multi-station high-voltage switch |
| CN102110956A (en) * | 2010-12-14 | 2011-06-29 | 北京清畅电力技术股份有限公司 | Novel solid insulated switch |
| CN102543561A (en) * | 2012-01-04 | 2012-07-04 | 苏州朗格电气有限公司 | Closing holding device for vacuum circuit breaker |
| CN203055767U (en) * | 2012-11-13 | 2013-07-10 | 北京京东方真空电器有限责任公司 | Ring main unit directly-operated type vacuum switchgear |
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| CN102969193A (en) | 2013-03-13 |
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