CN106531541B - A kind of vacuum switch module of nitrogen gas insulating ring main unit - Google Patents
A kind of vacuum switch module of nitrogen gas insulating ring main unit Download PDFInfo
- Publication number
- CN106531541B CN106531541B CN201611170281.0A CN201611170281A CN106531541B CN 106531541 B CN106531541 B CN 106531541B CN 201611170281 A CN201611170281 A CN 201611170281A CN 106531541 B CN106531541 B CN 106531541B
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- China
- Prior art keywords
- fixed
- support plate
- main unit
- mounting bracket
- nitrogen gas
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
Abstract
The present invention provides a kind of vacuum switch module of nitrogen gas insulating ring main unit, greatly optimizes the layout of vacuum switch module and installation in nitrogen gas insulating ring main unit, provided under the premise of insulation and temperature increase requirement is met it is a kind of minimize, the vacuum switch of compact.It includes vacuum interrupter, metal mounting bracket, insulation support plate, support insulator, fixed frame and touch spring system；The insulation support plate is horizontally fixed on metal mounting bracket top；The upper end of the vacuum interrupter is vertically fixed on the lower part of insulation support plate, lower end fixed setting fixed frame；The fixed pan of metal mounting bracket and insulation support plate is less than vacuum interrupter and the fixed upper plane of insulation support plate；The touch spring system is installed on inside fixed frame, and actuating power is provided for connecting the moving contact of vacuum interrupter；One end of the support insulator is fixed on the side of metal mounting bracket, and the other end is fixed with fixed frame.
Description
Technical field
The present invention relates to high-voltage electrical equipment technical field, specially a kind of vacuum switch mould of nitrogen gas insulating ring main unit
Block.
Background technology
Nitrogen gas insulating ring main unit compares traditional SF6Gas-insulated ring network cabinet has the feature of environmental protection, it is considered to be following SF6Ring
The substitute of net cabinet.Since the insulation performance of nitrogen or dry air is not so good as SF6, therefore the volume of nitrogen gas insulating ring main unit than
SF6Ring main unit is bigger.It is smaller in order to which the volume of nitrogen gas insulating ring main unit is done, it is necessary to design a kind of opening for compact
It closes, not only needs each member of rational deployment, device, while also to meet the performance requirements such as insulation, temperature liter.
In the prior art, nitrogen gas insulating or dry air insulation ring main unit be mostly using pole structure, this need compared with
High sealing technology and cost, once and epoxy interface there are air gaps, then corona is susceptible at air gap.And sealing pole
The cracking hidden danger of column is also unfavorable for realizing the non-maintaining of gas-filling cabinet.In addition, considering insulation and temperature rise model, cause the type
The volume of ring main unit can not reduce, cost is difficult to reduce and SF6The competitive advantage of ring main unit is not strong.
On the other hand, in inflation class ring main unit technology at present, vacuum interrupter generally uses the board-like knot of both sides insulating blanked clamper
Structure is fixed, and for this structure in the case where contact pressure is big, insulation board intensity is poor, and transmission main shaft inconvenience is installed and fixed, and
Phase insulation processing is difficult, and vacuum switch integral installation is fixed inconvenient.The prior art also uses side-mounted structure, by arc extinguishing
In the unilateral fixation of side insulator, this structure easily tilts room upper/lower terminal when contact pressure is big to unilateral side, influences
The normal performance of switch；In addition to this upper space can be also occupied, switchgear size is caused to increase.It is in conclusion existing at present
Nitrogen gas insulating or other inflation class ring main unit technologies there are disadvantages mentioned above.
Invention content
For problems of the prior art, the present invention provides a kind of vacuum switch mould of nitrogen gas insulating ring main unit
Block greatly optimizes the layout of vacuum switch module and installation in nitrogen gas insulating ring main unit, is meeting insulation and temperature increase requirement
Under the premise of provide it is a kind of minimize, the vacuum switch of compact.
The present invention is to be achieved through the following technical solutions：
A kind of vacuum switch module of nitrogen gas insulating ring main unit, including vacuum interrupter, metal mounting bracket, insulating supporting
Plate, support insulator, fixed frame and touch spring system；The insulation support plate is horizontally fixed on metal mounting bracket top；Institute
The upper end for stating vacuum interrupter is vertically fixed on the lower part of insulation support plate, lower end fixed setting fixed frame；Metal mounting bracket with
The fixed pan of insulation support plate is less than vacuum interrupter and the fixed upper plane of insulation support plate；The touch spring system peace
Inside fixed frame, actuating power is provided for connecting the moving contact of vacuum interrupter；One end of the support insulator is consolidated
The side of metal mounting bracket is scheduled on, the other end is fixed with fixed frame.
Preferably, the insulation support plate uses domes, and horizon crossing is in the both sides on metal mounting bracket top.
Preferably, the insulation support plate uses unilateral domes, and top horizontal setting is vertical with vacuum interrupter solid
Fixed, bottom level is fixed on the side on metal mounting bracket top；Arch of the unilateral domes only to retain side support
Shape structure.
Preferably, the both ends of the vacuum interrupter are respectively arranged with composite shield cover.
Further, composite shield cover is made of internal integrated casting metal shielding case epoxy resin；Metallic shield is in disk
Shape is set, and outer rim is extended in an axial direction to one end；Metallic shield peripheral end portion in each composite shield cover is beyond correspondence
The metal sealing face setting of side vacuum interrupter.
Preferably, the both ends of the surface of the support insulator are cast with the embedded metallic shield net annularly set.
Further, the built-in end of the metallic shield net is provided with the crimping of outside turnup.
Preferably, the metal mounting bracket includes front and rear panels and the multiple horizontal strokes being fixed between front and rear panels
Beam；Crossbeam provides installation site for insulation support plate and support insulator.
Further, touch spring system includes touch spring, spring base, transmission lever system and transmission shaft；Touch spring one
End connection moving contact operating side, the other end are coaxially connected on the guide groove of fixed frame by spring base；Mounted on foreboard with after
Transmission shaft is connect by being driven lever system with moving contact operating side on plate；The center line of guide groove and touch spring and vacuum extinction
The center line of room overlaps.
Compared with prior art, the present invention has technique effect beneficial below：
A kind of vacuum switch module of nitrogen gas insulating ring main unit of the present invention, passes through the setting of insulation support plate so that from
The hanging installation to it is completed at the top of vacuum interrupter, and the fixed position of insulation support plate is caused to be less than its supporting point position
It puts, the vacuum switch module is made to increase the distance between fixed point and bus-bar insulator after being installed to switchgear, increases gas
Body space, so as to shorten the distance between peak in bus-bar insulator and supporting point i.e. module；Meet insulation away from
From under conditions of, neighbouring height space is saved.From the fixed supporting insulator in side, bigger saves its longitudinal direction for cooperation
Space, it is compact overall structure, small, the nitrogen gas insulating ring main unit of this vacuum switch of installation can be made to realize miniaturization, reduced
Manufacture cost.Simultaneously using metal mounting bracket realize frame structure, it is made to be arranged and fixed conveniently, insulate and temperature rise model it is good,
Each component stress equalization.But also vacuum switch module can be sold separately as product, better benefit is created.
Further, by the insulation support plate of arch that set arch or unilateral, optimized arrangement structure reduces vacuum and opens
The volume of module is closed, while can be when switch carries out breaking-closing operating, entire module is more securely unlikely to deform.
Further, by being provided with the support insulator of metallic shield net, support insulator both ends high pressure is optimized
Electric field distribution between electrode and ground electrode, while the installation space between vacuum interrupter and metal mounting bracket crossbeam is reduced,
Reduce the volume of vacuum switch module.
Further, by setting composite shield cover at vacuum interrupter both ends, instead of the asphalt mixtures modified by epoxy resin of vacuum interrupter
Fat clad avoids the corona problem that the air-gap at epoxy interface is brought, and epoxy resin materials are few, before insulating requirements are met
It puts, heat dissipation is more preferable, volume smaller, and cost is lower.
Description of the drawings
Fig. 1 is the front view of switch module described in present example.
Fig. 2 is the side cutaway view of switch module described in present example 1.
Fig. 3 is the sectional view of support insulator of the present invention.
Fig. 4 is the sectional view of composite shield cover of the present invention.
Fig. 5 is the side cutaway view of switch module described in present example 2.
Wherein：1 is vacuum interrupter；2 be metal mounting bracket；21 be foreboard；22 be back plate；23 be crossbeam；3 be insulation branch
Fagging；4 be support insulator；41 be metallic shield net；5 be composite shield cover；51 be metallic shield；6 be fixed frame；7 are
Touch spring system.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
A kind of vacuum switch module of nitrogen gas insulating ring main unit of the present invention, including vacuum interrupter 1, metal mounting bracket 2,
Insulation support plate 3, support insulator 4, composite shield cover 5, fixed frame 6, touch spring system 7；Insulation support plate 3 is horizontal fixed
On 2 top of metal mounting bracket；The vacuum interrupter 1 is vertically fixed on the lower part of insulation support plate 3；Insulation support plate 3 and gold
The fixed pan for belonging to mounting bracket 2 is less than the upper plane of vacuum interrupter 1；Support insulator 4 is fixed on the one of metal mounting bracket 2
Side；Fixed frame 6 is fixed on support insulator 4.Insulation support plate 3 is domes or unilateral domes.Composite shield cover 5
It is arranged on the both ends of vacuum interrupter 1.The both ends of the surface of support insulator 4 are cast with the embedded metallic shield net of setting in a ring
41.The epoxide resin material that composite shield cover 5 is cast with metallic shield 51 by inside is made.Metal mounting bracket 2 includes foreboard
21 and back plate 22 and multiple crossbeams 23 for being fixed between foreboard 21 and back plate 22.In use, from 1 top of vacuum interrupter
Inlet wire, by 6 lower end outlet of fixed frame.Specifically as described in following instance.
Example 1
As shown in Figure 1, a kind of vacuum switch module of nitrogen gas insulating ring main unit of the present invention, using tower structure,
Three-phase is arranged vertically, and the metal mounting bracket 2 of frame structure is for providing installation site, before metal mounting bracket 2 is by metal material
Plate 21, back plate 22 and crossbeam 23 are welded to form.
Such as Fig. 2, a kind of vacuum switch module of nitrogen gas insulating ring main unit includes：Vacuum interrupter 1, metal mounting bracket 2,
Insulation support plate 3, support insulator 4, composite shield cover 5, fixed frame 6, touch spring system 7.Vacuum interrupter 1 can basis
It needs to select arc-extinguishing chamber of circuit breaker or on-load switch arc-chutes, suspension is fixed between insulation support plate 3 and fixed frame 6, by exhausted
Edge support plate 3 undertakes the impact force when gravity and combined floodgate of lifting vacuum interrupter.
3 horizon crossing of insulation support plate in the upper beam 23 of metal mounting bracket 2, with metal install by insulation support plate 3
The fixed pan of frame 2 is less than the upper plane of vacuum interrupter 1, and such structure can make the vacuum switch module be installed to switch
The distance between fixed point and bus-bar insulator are increased after cabinet, so as to shorten bus-bar insulator and tie point i.e. highest
The distance between point, so as to save neighbouring height space.
Support insulator 4 is fixed on the side crossbeam 23 of 2 lower part of metal mounting bracket, and the side of fixed frame 6 is fixed on branch
On column insulator 4.41 built-in end of metallic shield net is provided with the crimping of outside turnup, can decay in support insulator 4 and metal
The high field intensity that existing small air gap generates between mounting bracket 2, and energy 4 surface field of uniform support insulator, shorten post insulator
The axial distance of son 4.
Composite shield cover 5 is in the stationary contact of vacuum interrupter 1 and moving contact end, each composite shield cover 5
51 peripheral end portion of metallic shield is set beyond the metal sealing face of respective side vacuum interrupter 1；So as to common instead of tradition
The vacuum interrupter coated by epoxy resin, generated with the porcelain shell both ends sealing surface and sharp corner of uniform vacuum arc-chutes 1
High field intensity, while the corona problem that the air-gap for avoiding epoxy interface is brought, so as to reduce the size of vacuum interrupter.
The width and height dimension of the vacuum switch module of the present invention are smaller, can make the nitrogen gas insulating ring of this module of installation
Net cabinet realizes miniaturization, compact.The vacuum switch module can carry out independent assembling and debugging outside ring main unit, treat vacuum switch
Parameter and performance adjustment after, integral installation in the Pneumatic box body of switchgear, therefore the installation of vacuum switch module and
Fixation is more convenient.
In this example, such as Fig. 2, insulation support plate 3 is preferably domes, can be under the premise of insulating requirements are met
Reduce the height dimension of metal mounting bracket 2, reduce the volume of vacuum switch module；Meanwhile domes can disperse downwards, outward
Stress so that insulation support plate 3 is firmer when bearing combined floodgate impact force.
Such as Fig. 3, the both ends of support insulator 4 are cast with metallic shield net 41, and support insulator 4 plays support and insulation is made
With by setting metallic shield net 41, the electric field optimized between 4 both ends high-field electrode of support insulator and ground electrode is distributed, together
When reduce installation space between vacuum interrupter 1 and the crossbeam 23 of metal mounting bracket 2, further reduce vacuum switch module
Volume.
Such as Fig. 4, composite shield cover 5 is preferably the internal epoxide resin material for being cast with metallic shield 51；Combined screen
The epoxy thickness covered on cover 5 is gradually increased from bottom to end thickness, and the epoxy resin section of end is smooth into arc-shaped
Transition.On the one hand, instead of the epoxy resin clad of vacuum interrupter 1, the electricity that the air-gap at epoxy interface is brought is avoided
Dizzy problem, epoxy resin materials are few, and under the premise of insulating requirements are met, heat dissipation is more preferable, volume smaller, and cost is lower.The opposing party
Face, in traditional design, if it is desired that with exposed vacuum interrupter, it is necessary to which shielding knot is set at 1 both ends of vacuum interrupter
Structure, if using most common metallic shield, the position that electric field is most concentrated needs sufficiently large circular arc just to can guarantee absolutely
Edge is functional, therefore metallic shield enclosure volume will be very big, can also influence phase insulation.And use the composite shield cover of insulation
5 can effectively reduce the size of shielding case, so as to reduce the overall dimensions of vacuum switch.
As shown in Fig. 2, touch spring system 7 is installed on inside fixed frame 6, including touch spring, spring base, transmission leverage
The parts such as system and transmission shaft.Fixed frame 6 has a guide groove, the center line of guide groove in touch spring and vacuum interrupter
Heart line position overlaps, and play the guiding role, it is ensured that and the moving contact of vacuum interrupter 1 does not deviate in switching on and off, while
The transmission for making touch spring system 7 is relatively reliable.
Example 2
In this example, as described in Figure 5, insulation support plate 3 preferably only retains the domes of side support, that is,
Unilateral domes；The height dimension of metal mounting bracket 2 can be reduced under the premise of insulating requirements are met, reduce vacuum switch
The volume of module；Meanwhile unilateral domes can downward, outside dispersive stress so that insulation support plate 3 is bearing to close a floodgate
It is firmer during impact force.Remaining structure is identical with example 1.
Basic principle of the invention and main feature and advantages of the present invention has been shown and described above.Art technology
Personnel will be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.
Claims (7)
1. a kind of vacuum switch module of nitrogen gas insulating ring main unit, which is characterized in that pacify including vacuum interrupter (1), metal
Shelve (2), insulation support plate (3), support insulator (4), fixed frame (6) and touch spring system (7)；
The insulation support plate (3) is horizontally fixed on metal mounting bracket (2) top；The upper end of the vacuum interrupter (1) is vertical
It is fixed on the lower part of insulation support plate (3), lower end fixed setting fixed frame (6)；
Metal mounting bracket (2) and the fixed pan of insulation support plate (3) are solid with insulation support plate (3) less than vacuum interrupter (1)
Fixed upper plane；
The touch spring system (7) is installed on fixed frame (6) inside, is provided for connecting the moving contact of vacuum interrupter (1)
Actuating power；
One end of the support insulator (4) is fixed on the side of metal mounting bracket (2), and the other end is fixed with fixed frame (6)；
The both ends of the vacuum interrupter (1) are respectively arranged with composite shield cover (5)；Composite shield cover (5) is by internal one
The epoxy resin of casting metal shielding case (51) is made；Metallic shield (51) disc-shaped setting, outer rim are prolonged in an axial direction to one end
Stretch setting；Metallic shield (51) peripheral end portion in each composite shield cover (5) exceeds the gold of respective side vacuum interrupter (1)
Belong to sealing surface setting.
A kind of 2. vacuum switch module of nitrogen gas insulating ring main unit as described in claim 1, which is characterized in that the insulation
Support plate (3) is using domes, and horizon crossing is in the both sides on metal mounting bracket (2) top.
A kind of 3. vacuum switch module of nitrogen gas insulating ring main unit as described in claim 1, which is characterized in that the insulation
Support plate (3) uses unilateral domes, and top horizontal setting is vertical with vacuum interrupter to be fixed, and bottom level is fixed on metal
The side on mounting bracket (2) top；Domes of the unilateral domes only to retain side support.
A kind of 4. vacuum switch module of nitrogen gas insulating ring main unit as described in claim 1, which is characterized in that the pillar
The both ends of the surface of insulator (4) are cast with the embedded metallic shield net (41) annularly set.
A kind of 5. vacuum switch module of nitrogen gas insulating ring main unit as claimed in claim 4, which is characterized in that the metal
The built-in end of gauze screen (41) is provided with the crimping of outside turnup.
A kind of 6. vacuum switch module of nitrogen gas insulating ring main unit as described in claim 1, which is characterized in that the metal
Mounting bracket (2) includes foreboard (21) and back plate (22) and the multiple crossbeams being fixed between foreboard (21) and back plate (22)
(23)；Crossbeam (23) provides installation site for insulation support plate (3) and support insulator (4).
A kind of 7. vacuum switch module of nitrogen gas insulating ring main unit as claimed in claim 6, which is characterized in that touch spring
System (7) includes touch spring, spring base, transmission lever system and transmission shaft；Touch spring one end connection moving contact operating side, separately
One end is coaxially connected on the guide groove of fixed frame (6) by spring base；Simultaneously on foreboard (21) and back plate (22)
The transmission shaft is connect by being driven lever system with moving contact operating side；The center line of guide groove and touch spring and vacuum extinction
The center line of room overlaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170281.0A CN106531541B (en) | 2016-12-16 | 2016-12-16 | A kind of vacuum switch module of nitrogen gas insulating ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170281.0A CN106531541B (en) | 2016-12-16 | 2016-12-16 | A kind of vacuum switch module of nitrogen gas insulating ring main unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106531541A CN106531541A (en) | 2017-03-22 |
| CN106531541B true CN106531541B (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611170281.0A Active CN106531541B (en) | 2016-12-16 | 2016-12-16 | A kind of vacuum switch module of nitrogen gas insulating ring main unit |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107706041A (en) * | 2017-10-26 | 2018-02-16 | 南通开发区东升电子有限公司 | A kind of Totally-enclosed-type three-pole AC vacuum contactor |
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| JP2006166651A (en) * | 2004-12-09 | 2006-06-22 | Mitsubishi Electric Corp | Switching device |
| CN201766017U (en) * | 2010-05-21 | 2011-03-16 | 陕西龙翔电器有限公司 | Novel indoor high-voltage vacuum circuit breaker with uniform electric field |
| CN201853641U (en) * | 2009-12-10 | 2011-06-01 | 浙宝电气(杭州)集团有限公司 | Sulfur hexafluoride (SF6) gas insulated vacuum circuit breaker |
| CN202917379U (en) * | 2012-09-23 | 2013-05-01 | 张敬敏 | Vacuum circuit breaker |
| CN203013601U (en) * | 2012-12-27 | 2013-06-19 | 江苏省中仁电气有限公司 | Breaker |
| CN104465213A (en) * | 2014-12-03 | 2015-03-25 | 中国西电电气股份有限公司 | Gas-insulated switchgear and pressure-operated load switch arc extinguish chamber thereof |
| CN104882327A (en) * | 2015-06-04 | 2015-09-02 | 宁波耐森电气科技有限公司 | Side-mounted circuit breaker used on gas-insulated switchgear and operating principle thereof |
-
2016
- 2016-12-16 CN CN201611170281.0A patent/CN106531541B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006166651A (en) * | 2004-12-09 | 2006-06-22 | Mitsubishi Electric Corp | Switching device |
| CN201853641U (en) * | 2009-12-10 | 2011-06-01 | 浙宝电气(杭州)集团有限公司 | Sulfur hexafluoride (SF6) gas insulated vacuum circuit breaker |
| CN201766017U (en) * | 2010-05-21 | 2011-03-16 | 陕西龙翔电器有限公司 | Novel indoor high-voltage vacuum circuit breaker with uniform electric field |
| CN202917379U (en) * | 2012-09-23 | 2013-05-01 | 张敬敏 | Vacuum circuit breaker |
| CN203013601U (en) * | 2012-12-27 | 2013-06-19 | 江苏省中仁电气有限公司 | Breaker |
| CN104465213A (en) * | 2014-12-03 | 2015-03-25 | 中国西电电气股份有限公司 | Gas-insulated switchgear and pressure-operated load switch arc extinguish chamber thereof |
| CN104882327A (en) * | 2015-06-04 | 2015-09-02 | 宁波耐森电气科技有限公司 | Side-mounted circuit breaker used on gas-insulated switchgear and operating principle thereof |
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| Publication number | Publication date |
|---|---|
| CN106531541A (en) | 2017-03-22 |
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Effective date of registration: 20210816 Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. Address before: 710075 Shaanxi city of Xi'an province high tech Zone No. 7 Tang Xing Lu Patentee before: CHINA XD ELECTRIC Co.,Ltd. |
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Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: Xi'an High Voltage Electrical Apparatus Research Institute Co.,Ltd. Address before: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee before: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. |
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