CN203055767U - Ring main unit directly-operated type vacuum switchgear - Google Patents
Ring main unit directly-operated type vacuum switchgear Download PDFInfo
- Publication number
- CN203055767U CN203055767U CN 201220598519 CN201220598519U CN203055767U CN 203055767 U CN203055767 U CN 203055767U CN 201220598519 CN201220598519 CN 201220598519 CN 201220598519 U CN201220598519 U CN 201220598519U CN 203055767 U CN203055767 U CN 203055767U
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- switch tube
- vacuum switch
- main unit
- pull bar
- ring main
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Abstract
The utility model discloses a ring main unit directly-operated type vacuum switchgear. The ring main unit directly-operated type vacuum switchgear comprises a casing, pull rods and vacuum switching tubes arranged inside the casing; the pull rods comprise a first pull rod and a second pull rod; the vacuum switching tubes comprise a first vacuum switching tube and a second vacuum switching tube; an isolating device and a switching-off device are arranged between the first pull rod and the first vacuum switching tube; and a lower left portion and a right-side middle portion of the casing are both provided with a cylindrical hole, wherein a wire-entering terminal is arranged inside the cylindrical hole at the lower left portion, and a wire-exiting terminal is arranged inside the cylindrical hole at the right-side middle portion. The ring main unit directly-operated type vacuum switchgear of the utility model is advantageous in that disconnecting and isolation of a ring main unit main loop can be realized through mechanical translational movement as well as and the built-in isolating device and the built-in switching-off device; effective switching off of short-circuit current which is produced when a load is grounded can be realized through the second vacuum switching tube; and the ring main unit directly-operated type vacuum switchgear has an electric arc-prevention function and can realize effective grounding when the load is repaired.
Description
Technical field
The utility model relates to the High-Voltage Electrical Appliances field, more specifically, relates 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 commonly used in a kind of ring network power supply, and its core devices is on-load switch and fuse, sets up on the distribution branch road because of ring main unit, and ring main unit also is considered to a kind of outlet switch cubicle, is the important switchgear of ring network power supply and terminal power supply.Because ring main unit is particularly suitable for being used in the not occasion of frequent operation of power supply steady in a long-term or high-voltage switch gear, and it is little to have volume simple in structure, characteristics such as reliable easy-maintaining, in recent years, be able to extensive utilization, especially the solid insulation ring main unit is put into No. 1285 files of State Grid Corporation of China and State Grid Corporation of China " 12 " planning, and its development trend receives industry greatly and pays close attention to.
Ring main unit generally is divided into air insulation and SF6 insulate two kinds, is used for deciliter load current, the charging current that short circuit current, no-load transformer electric current and overhead transmission line and cable line are cut-off in control and protection.Its on-load switch mainly contains air-generating, air pressing type, vacuum type and SF6 formula, a large amount of uses is SF6 formula switch and vacuum switch at present, but because SF6 is a kind of artificial inert gas, easily sneak into poisonous gas such as sulfur fluoride and itself also be a kind of greenhouse gas, its use is subjected to more and more strict supervision, the maturation day by day of simultaneous vacuum switch technology and vacuum switch have the life-span long, anti-interference good, the little characteristics such as in light weight of volume, becomes the main flow in market just gradually.
The ring main unit switch generally requires three stations, i.e. closing position, isolation position, ground connection position.Wherein air-generating, air pressing type and SF6 formula on-load switch are easily realized three stations, and vacuum switch is little because of the fracture distance, can't isolation fracture, so the ring main unit of vacuum switch can add an isolating switch and vacuum switch polyphone usually, to form isolation fracture, this mode obviously needs the extra isolating switch that increases just can finish the circuit isolation, has both increased cost, also is inconvenient to install.
There is certain defective in present disclosed solid insulation ring main unit switch.For example: on isolate the air insulation isolating switch of pattern, its pass is closed the short circuit current action and is relied on main switch to finish, operating process is loaded down with trivial details; Be provided with three stations though isolate the air insulation isolating switch of pattern down, but direct ground connection, but the poor effect of short circuit current is closed in its pass.
Summary of the invention
The purpose of this utility model is to propose a kind of ring main unit direct-acting vacuum switching device, can realize that the ring main unit major loop disconnects and isolation by mechanical translation and built-in spacer assembly, and close effective pass of short circuit current in the time of can connecting earthy vacuum switch and realize load ground connection by leading-out terminal, thus the effective grounding when realizing the maintenance load.
For reaching this purpose, the utility model 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 first pull bar and second pull bar, first pull bar is positioned at second pull bar left side, described vacuum switch tube comprises first vacuum switch tube and second vacuum switch tube, first vacuum switch tube is positioned at second vacuum switch tube left side, one end of described first pull bar and second pull bar is connected with second vacuum switch tube with corresponding first vacuum switch tube respectively, and the other end links to each other with operating mechanism;
Be provided with spacer assembly and switching-off device between described first pull bar and first vacuum switch tube, described spacer assembly is located on the 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 the lower left quarter cylindrical hole, input terminal links to each other with the static conductive rod of the first vacuum switch bottom, be provided with outlet terminal in the right side central cylindrical hole, outlet terminal is connected with the soft terminal bolt of being with, the described soft band other end links to each other with insulating contact in the spacer assembly, is consolidated on 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 and insulating contact seat chute are slidingly matched.
Preferably, described insulating contact periphery is provided with the multiple tracks groove, is provided with spring contact in the groove.
Further, described switching-off device comprises holder, sluice separating spring and spacing pressing plate and is located at evagination slide block on the insulating contact seat, described holder inside is provided with chute, chute and evagination slide block are slidingly matched, 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 connected by bolt with spacing pressing plate and links to each other.
Further, described first 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; One end of described moving conductive rod and static conductive rod all places in the vacuum switch tube pipe, and Dui Ying pipe inner terminal place is provided with moving contact and fixed contact respectively with it, and its other end all places outside the vacuum switch tube.
Further, the moving conductive rod tube external terminal of described first 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 described second vacuum switch tube is connected with second pull rod screw, and the pipe external terminal of its static conductive rod is connected by set bolt with the ground connection copper bar.
Further, described soft band is consolidated in the moving conductive rod tube external terminal junction of second pull bar and second vacuum switch tube.
Preferably, described operating mechanism is arranged in ring main unit, is positioned at switching device housing top, and first pull bar and second pull bar are suitable with operating mechanism separately.
Preferably, described first vacuum tube and the second vacuum tube pipe are wrapped with resilient coating.
The beneficial effects of the utility model are:
(1) described ring main unit Direct Action Type switching device is provided with spacer assembly, and it is little because of fracture distance to have solved vacuum switch, problem that can't isolation fracture;
(2) be provided with switching-off device, the operation of the pull bar of winning had finish and isolate and the double effects of separating brake;
(3) described spring contact is connected with insulating contact seat sliding conduction, not only can not produce electric arc, and has strengthened the reliability that short circuit current is closed in the pass;
(4) utilize injection technique that various conductive inserts are embedded in the insulation shell, the compact conformation volume is little;
(5) insulation shell employing polycarbonate or nylon-type etc. have the material of good insulation performance and mechanical strength properties, and are safe and reliable.
Description of drawings
Fig. 1 is the "on" position schematic diagram of the ring main unit switching device that provides of the utility model embodiment;
Fig. 2 is the isolation schematic diagram of the ring main unit switching device that provides of the utility model embodiment;
Fig. 3 is the ground state schematic diagram of the ring main unit switching device that provides of the utility model embodiment;
Fig. 4 is the switching-off device structural representation of the ring main unit switching device that provides of the utility model embodiment.
Among the figure: 1, input terminal; 2, 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 band; 12, housing; 13, first pull bar; 14, second pull bar; 15, terminal appears; 16, second vacuum switch tube; 17, moving contact; 18, fixed contact; 19, ground connection copper bar; 20, spacing pressing plate; 21, evagination slide block.
Embodiment
Further specify the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment.
Shown in Fig. 1-4, in 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 first pull bar 13 and second pull bar 14, first pull bar 13 is positioned at second pull bar, 14 left sides, described vacuum switch tube comprises first vacuum switch tube 2 and second vacuum switch tube 16, first vacuum switch tube 2 is positioned at second vacuum switch tube, 12 left sides, described first vacuum switch tube 2 and second vacuum switch tube, 16 inner fractures are the vacuum fracture, first vacuum switch tube 2 is main switch, one end of described first pull bar 13 and second pull bar 14 is connected with second vacuum switch tube 12 with corresponding first vacuum switch tube 2 respectively, and the other end links to each other with operating mechanism.
Described first 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; One end of the moving conductive rod of described first vacuum switch tube 2 and static conductive rod all places in first vacuum switch tube, 2 pipes, and Dui Ying pipe inner terminal place is provided with moving contact 4 and fixed contact 3 respectively with it, and its other end all places outside first vacuum switch tube 2; One end of the moving conductive rod of described second vacuum switch tube 16 and static conductive rod 19 all places in first vacuum switch tube, 16 pipes, corresponding pipe inner terminal place is provided with moving contact 17 and fixed contact 18 respectively, its other end all places outside second vacuum switch tube 16, and the fracture between the described dynamic/static contact is the vacuum fracture.
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 and input terminal 1 are connected by set bolt; The moving conductive rod tube external terminal of described second vacuum switch tube 16 is threaded with second pull bar 14, and the pipe external terminal of its static conductive rod 19 is connected by set bolt with the ground connection copper bar.
Described first vacuum switch tube 2 and second vacuum switch tube, 16 pipes are wrapped with resilient coating and adopt solid encapsulation technique, conductive insert closely is connected with housing, form a semiclosed module, utilize injection technique that various conductive inserts are embedded in the insulation shell, make that entire device compact conformation volume is little.
Be provided with spacer assembly and switching-off device between described first pull bar 13 and first vacuum switch tube 2, described spacer assembly is located on the switching-off device.
Described spacer assembly comprises insulating contact seat 8 and insulating contact 10, described insulating contact seat 8 inside are provided with chute, insulating contact 10 is slidingly matched with chute, and when insulating contact 10 skidded off chute, the fracture between insulating contact 10 and the insulating contact seat 8 was the air gap.Described insulating contact 10 peripheries are provided with the multiple tracks groove, be provided with spring contact 9 in the groove, insulating contact 10 and insulating contact seat 8 are connected as sliding conduction by spring contact 9, when first vacuum tube is opened a sluice gate moment, spring contact 9 still conducts with insulating contact seat 8, during no electric arc produce.In addition, insulating contact 10 is connected with first stay-bolt.
Described switching-off device comprises holder 7, sluice separating spring 6 and spacing pressing plate 20 and is located at evagination slide block 21 on the insulating contact seat 8; Described holder 7 inside are provided with chute, and chute and evagination slide block 21 are slidingly matched, and described sluice separating spring 6 is positioned at evagination slide block 21 bottoms, and described spacing pressing plate is positioned at evagination slide block 21 tops, and holder 7 is connected by bolt with spacing pressing plate 20 and links to each other.Holder 7 is to be enclosed in the insulation shell admittedly in advance, motion by the evagination slide block 21 on the spacing pressing plate fixed thereon 20 restriction insulating contact seats 8, the motion that its moving conductive rod made progress when the vacuum switch tube of winning was opened a sluice gate obtains restriction, finish separating brake work, in addition because 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 the lower left quarter cylindrical hole, input terminal 1 links to each other with the static conductive rod of first vacuum switch tube, 2 bottoms, be provided with outlet terminal 15 in the right side central cylindrical hole, outlet terminal 15 is connected with soft 11 1 terminal bolts of being with, outlet terminal 15 is with 11 to conduct with soft, described softly link to each other with insulating contact 10 in the spacer assembly with 11 other ends, softly be with 11 to conduct with insulating contact 10, be consolidated on first pull bar 13, the soft moving conductive rod external terminal junction that is consolidated in second pull bar 14 and second vacuum switch tube 16 with the place of taking over, 11 middle part conducts with moving conductive rod.
Described operating mechanism is arranged in ring main unit, is positioned at switching device housing 12 tops, and first pull bar 13 and second pull bar 14 are suitable with operating mechanism separately, and operating mechanism is used for the control ring main unit and finishes actions such as separating brake, folding, isolation and ground connection.
During actual production, housing, first pull bar and second pull bar all adopt insulating material to make, its middle shell preferred epoxy material, also can use polycarbonate or nylon-type etc. to have the material of good insulation performance and mechanical strength, solid encapsulation technique is adopted in the installation of main components and parts, utilizes injection technique that each conductive insert is fixed in the insulation shell.
During concrete the use, "on" position schematic diagram with reference to Fig. 1 ring main unit switching device, as shown in the figure, first vacuum switch tube 2 is in closing position, this moment, insulating contact 10 was embedded in the insulating contact seat 8, conduct with the moving conductive rod of first vacuum switch tube 2, first vacuum switch tube 2 is in "on" position, its fixed contact 3 closely contacts and conducts under the effect of operating mechanism switching force with moving contact 4, this moment, second vacuum switch tube 16 was in the separating brake position, and its fixed contact 18 separates under the effect of operating mechanism with moving contact 17, made outlet terminal and earth potential isolate, this moment, input terminal 1 conducted with external loading, and looped network is powered to external loading.
Isolation schematic diagram with reference to Fig. 2 ring main unit switching device, operating mechanism drives first pull bar 13 and moves upward, this moment is under the effect of switching-off device, the dynamic/static contact of first vacuum switch tube 2 separates finishes the separating brake action, first vacuum switch tube 2 disconnects with input terminal 1, produce electric arc in dynamic/static contact separation place, but this moment, insulating contact 10 did not break away from fully with insulating contact seat 8, continue and the load conducting, so can not produce electric arc between insulating contact 10 and the insulating contact seat 8 in the power process; First pull bar 13 continues to move upward, behind arc extinction in first vacuum switch tube, insulating contact seat 8 has reached the restriction position at spacing pressing plate 20 places, no longer move upward, this moment, insulating contact 10 began to separate with insulating contact seat 8, and first pull bar 13 continues to move up to shown position, and have bigger air gap between insulating contact 8 and the insulating contact seat this moment, insulating contact 8 arrives the safe insulation distance, finishes isolation.Load this moment and high-tension electricity bus are isolated the load dead electricity fully.
With reference to the isolation schematic diagram of Fig. 2 ring main unit switching device, need overhaul or other reasons when needing ground connection when load, operating mechanism drives second pull bar 14, makes second vacuum switch tube 16 close a floodgate, and its dynamic/static contact conducts, load and ground conductive.At this moment, first pull bar 13 is in the isolation position.
Below only be illustrated with the utility model of embodiment, but the utility model is not limited to above-mentioned size and outward appearance illustration, more should not constitute any restriction of the present utility model.As long as any improvement or modification that the utility model is done all belong within the protection range of claim opinion of the present invention.
Claims (9)
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 first pull bar (13) and second pull bar (14), first pull bar (13) is positioned at second pull bar (14) left side, described vacuum switch tube comprises first vacuum switch tube (2) and second vacuum switch tube (16), first vacuum switch tube (2) is positioned at second vacuum switch tube (12) left side, one end of described first pull bar (13) and second pull bar (14) is connected with second vacuum switch tube (12) with corresponding first vacuum switch tube (2) respectively, and the other end links to each other with operating mechanism;
Be provided with spacer assembly and switching-off device between described first pull bar (13) and first vacuum switch tube (2), described spacer assembly is located on the 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 the lower left quarter cylindrical hole, input terminal (1) links to each other with the static conductive rod of first vacuum switch tube (2) bottom, be provided with outlet terminal (15) in the right side central cylindrical hole, outlet terminal (15) is connected with soft band (11) one terminal bolts, insulating contact (10) in the other end of described soft band (11) and the spacer assembly links to each other, and is consolidated on first pull bar (13).
2. ring main unit direct-acting vacuum switching device according to claim 1, it is characterized in that, described spacer assembly comprises insulating contact seat (8) and insulating contact (10), and described insulating contact seat (8) inside is provided with chute, and insulating contact (10) is slidingly matched with chute.
3. ring main unit direct-acting vacuum switching device according to claim 2 is characterized in that, described insulating contact (10) periphery is provided with the multiple tracks groove, is provided with spring contact (9) in the groove.
4. 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 is located at evagination slide block (21) on the insulating contact seat (8), described holder (7) inside is provided with chute, chute and evagination slide block (21) are slidingly 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, and holder (7) is connected by bolt with spacing pressing plate (20) and links to each other.
5. ring main unit direct-acting vacuum switching device according to claim 1 is characterized in that, described first 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 moving conductive rod of described first vacuum switch tube (2) and an end of static conductive rod all place in first vacuum switch tube (2) pipe, Dui Ying pipe inner terminal place is provided with moving contact (4) and fixed contact (3) respectively with it, and its other end all places outside first vacuum switch tube (2);
One end of the moving conductive rod of described second vacuum switch tube (16) and static conductive rod (19) all places in first vacuum switch tube (16) pipe, corresponding pipe inner terminal place is provided with moving contact (17) and fixed contact (18) respectively, and its other end all places outside second vacuum switch tube (16).
6. ring main unit direct-acting vacuum switching device according to claim 5, 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 second pull bar (14), and the pipe external terminal of its static conductive rod (19) is connected by set bolt with the ground connection copper bar.
7. ring main unit direct-acting vacuum switching device according to claim 1 is characterized in that, described soft band (11) is consolidated in the moving conductive rod tube external terminal junction of second pull bar (14) and second vacuum switch tube (16).
8. 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, is positioned at switching device housing (12) top, and first pull bar (13) and second pull bar (14) are suitable with operating mechanism separately.
9. ring main unit direct-acting vacuum switching device according to claim 1 is characterized in that, described first vacuum switch tube (2) and second vacuum switch tube (16) pipe are wrapped with resilient coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220598519 CN203055767U (en) | 2012-11-13 | 2012-11-13 | Ring main unit directly-operated type vacuum switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220598519 CN203055767U (en) | 2012-11-13 | 2012-11-13 | Ring main unit directly-operated type vacuum switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203055767U true CN203055767U (en) | 2013-07-10 |
Family
ID=48738694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220598519 Withdrawn - After Issue CN203055767U (en) | 2012-11-13 | 2012-11-13 | Ring main unit directly-operated type vacuum switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203055767U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969193A (en) * | 2012-11-13 | 2013-03-13 | 北京京东方真空电器有限责任公司 | Direct-acting vacuum switch device of ring main unit (RMU) |
| CN106531546A (en) * | 2016-12-07 | 2017-03-22 | 国网宁夏电力公司吴忠供电公司 | Direct-acting vacuum switch of ring main unit |
-
2012
- 2012-11-13 CN CN 201220598519 patent/CN203055767U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969193A (en) * | 2012-11-13 | 2013-03-13 | 北京京东方真空电器有限责任公司 | Direct-acting vacuum switch device of ring main unit (RMU) |
| CN102969193B (en) * | 2012-11-13 | 2015-11-25 | 北京京东方真空电器有限责任公司 | A kind of ring main unit direct-acting vacuum switching device |
| CN106531546A (en) * | 2016-12-07 | 2017-03-22 | 国网宁夏电力公司吴忠供电公司 | Direct-acting vacuum switch of ring main unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130710 Effective date of abandoning: 20151125 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |