CN203055771U - Vacuum circuit breaker and medium-voltage inflation cabinet - Google Patents
Vacuum circuit breaker and medium-voltage inflation cabinet Download PDFInfo
- Publication number
- CN203055771U CN203055771U CN 201220744975 CN201220744975U CN203055771U CN 203055771 U CN203055771 U CN 203055771U CN 201220744975 CN201220744975 CN 201220744975 CN 201220744975 U CN201220744975 U CN 201220744975U CN 203055771 U CN203055771 U CN 203055771U
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- Prior art keywords
- vacuum circuit
- breaker
- insulating cylinder
- hole
- conductive clip
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- Withdrawn - After Issue
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- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 230000008878 coupling Effects 0.000 claims description 23
- 238000010168 coupling process Methods 0.000 claims description 23
- 238000005859 coupling reaction Methods 0.000 claims description 23
- 238000009434 installation Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 238000003754 machining Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The utility model discloses a vacuum circuit breaker and a medium-voltage inflation cabinet. The vacuum circuit breaker comprises a support, an operating mechanism, an insulating cylinder, an arc extinguishing chamber and an insulating pull rod, wherein the insulating cylinder is provided with a through cavity. An end cover is arranged on an end of the cavity and is fixed on one end of the insulating cylinder in a detachable manner. The arc extinguishing chamber and the insulating pull rod are mounted in the cavity. The vacuum circuit breaker further comprises an integrated conductive apparatus, comprising a conductive clip and flexible connection, a mounting hole is opened in the conductive clip and the flexible connection is fixed on the conductive clip. An opening and a groove are disposed in a side wall of the mounting hole, a through hole is arranged in the conductive clip and mounted on one side of the opening and a screw thread hole is disposed in the conductive clip and mounted on the other side of the opening. The through hole and the screw thread hole are coaxially mounted. A second wire-outlet connector is connected with the flexible connection, a moving contact is plugged in the mounting hole, a screw penetrates through the through hole and is connected with the screw thread hole in a screw thread manner, and the moving contact is clamped in the mounting hole. According to the vacuum circuit breaker and the medium-voltage inflation cabinet, reliability of the vacuum circuit breaker is improved and workers can conveniently overhaul the vacuum circuit breaker.
Description
Technical field
The utility model relates to the electric equipment field, relates in particular to a kind of vacuum circuit-breaker and the middle inflation cabinet of pressing.
Background technology
Vacuum circuit-breaker as in press inflation core components and parts cashier's office in a shop, the quality of its performance directly determines the quality of whole switchgear performance, so the debugging work of vacuum circuit-breaker performance is the major tasks of middle pressure inflation cabinet always, the while also is difficult task.Vacuum circuit-breaker comprises parts compositions such as operating mechanism, insulating cylinder and arc control device, arc control device are arranged in insulating cylinder, also be provided with out wiring connector and insulated tension pole in the insulating cylinder, going out wiring connector is connected with the moving contact of arc control device by being flexible coupling, and the moving contact of arc control device and insulated tension pole link together, insulated tension pole is used for the linkage of attended operation mechanism, links together by conductive clip with moving contact and be flexible coupling.Conductive clip connects the stability that fastening stability directly determines circuit breaker, will bring great harm to vacuum circuit-breaker stable operation in case becoming flexible appears in conductive clip.At present, the conductive clip of the producer of exhausted big number design is all offered installing hole in the centre on the market, and installing hole one side has groove, by bolt be flexible coupling, the moving contact of arc control device and go out the wiring connector three and be fixed together.The as easy as rolling off a log influence that is subjected to circular hole machining accuracy in the conductive clip of this kind fixed form causes the situation of bolt looseness, thereby causes the generation of electric power accident; And, because middle pressure inflation cabinet is long-pending little, and the insulation of switchgear realizes by gas-insulated, during must being placed on, vacuum circuit breaker operating mechanism presses the sealed air chamber outside of inflation cabinet, and insulating cylinder is positioned at sealed air chamber inside, therefore have only and it could be sealed in the air chamber after the circuit breaker debugging finished, be subjected to insulating cylinder and the operating mechanism structural limitations thereof of vacuum circuit-breaker, in case conductive clip occurring occurs loosening or arc control device when damaging needs replacing, must remove whole vacuum circuit-breaker from sealed air chamber is inner, easily sealed air chamber is damaged, and the whole vacuum circuit-breaker of dismounting is wasted time and energy.As from the foregoing, vacuum circuit-breaker reliability of the prior art is lower, and is difficult for debugging and maintenance.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of vacuum circuit-breaker and the middle inflation cabinet of pressing are provided, it is lower to solve vacuum circuit-breaker reliability of the prior art, and be difficult for the defective of debugging and maintenance, realize improving the reliability of vacuum circuit-breaker, and make things convenient for the workman to overhaul vacuum circuit-breaker.
The technical scheme that the utility model provides is, a kind of vacuum circuit-breaker, comprise support, operating mechanism, insulating cylinder, arc control device and insulated tension pole, described operating mechanism and described insulating cylinder are separately fixed at the both sides of support, one end of described insulated tension pole is connected with the moving contact of described arc control device, the other end of described insulated tension pole connects the linkage of described operating mechanism, described insulating cylinder is provided with first and goes out wiring connector and second and go out wiring connector, described first goes out wiring connector is connected with the fixed contact of described arc control device, described insulating cylinder is provided with the cavity of perforation, one end of described cavity is provided with end cap, the dismountable end that is fixed on described insulating cylinder of described end cap, described arc control device and described insulated tension pole are arranged in described cavity; Described vacuum circuit-breaker also comprises the integral type electric installation, described integral type electric installation comprises conductive clip and is flexible coupling, described conductive clip offers installing hole, described be flexible coupling be fixed on the described conductive clip, the sidewall of described installing hole is provided with opening and groove, the side that described conductive clip is positioned at described opening is provided with through hole, and the opposite side that described conductive clip is positioned at described opening is provided with screwed hole, described through hole and the coaxial setting of described screwed hole; Described second go out wiring connector with described be flexible coupling be connected, described moving contact is inserted in the described installing hole, screw passes described through hole whorl and is connected in the described screwed hole, described moving contact is clamped in the described installing hole.
Aforesaid vacuum circuit-breaker, described opening and described groove are oppositely arranged.
Aforesaid vacuum circuit-breaker, described be flexible coupling be welded on the described conductive clip.
Aforesaid vacuum circuit-breaker, described moving contact are bullet, and described installing hole is bellmouth.
Aforesaid vacuum circuit-breaker, described end cap offers the first support installing hole, described first goes out wiring connector is arranged in the described first support installing hole, and the sidewall of described insulating cylinder is provided with the second support installing hole, and described second goes out wiring connector is arranged in the described second support installing hole.
Aforesaid vacuum circuit-breaker, the sidewall of described insulating cylinder also is provided with the stroke instrument connection, and described stroke instrument connection is positioned at a side of described insulated tension pole.
Aforesaid vacuum circuit-breaker also is provided with full skirt on the sidewall of described insulating cylinder.
Aforesaid vacuum circuit-breaker, the both sides of described support are provided with dynamic seal, and described insulated tension pole passes described dynamic seal and is connected with described linkage.
Aforesaid vacuum circuit-breaker, the linkage of described insulated tension pole and described operating mechanism links together by connecting rod.
Press the inflation cabinet in a kind of, comprise cabinet, be provided with sealed air chamber in the described cabinet, also comprise aforesaid vacuum circuit-breaker, the insulating cylinder of described vacuum circuit-breaker is positioned at described sealed air chamber inside, and the operating mechanism of described vacuum circuit-breaker is positioned at described sealed air chamber outside.
Compared with prior art, advantage of the present utility model and good effect are: the vacuum circuit-breaker that the utility model provides and the middle inflation cabinet of pressing, by the sidewall at the installing hole of conductive clip opening and groove are set respectively, after the moving contact of arc control device is inserted in the installing hole, screw is passed through hole to be tightened in the screwed hole, in tightening the process of screw, opening on the installing hole sidewall will narrow down and groove also with suitable narrowing down, thereby solid and reliable being fixed in the installing hole with the moving contact of arc control device, avoid occurring because the installing hole machining accuracy is not high the phenomenon of moving contact and conductive clip loose contact, improved the reliability of vacuum circuit-breaker; And, be flexible coupling and directly be fixed on the conductive clip, can effective simplification the installation process of integral type electric installation, need not to adopt bolts and nuts to cooperate will to be flexible coupling, conductive clip and moving contact link together, reduced the inner space that takies vacuum circuit-breaker, more convenient assembling vacuum circuit-breaker.In addition, by insulating cylinder being provided with the cavity of perforation, and an end of insulating cylinder seals by detachable end, vacuum circuit-breaker is assembled to the vacuum circuit-breaker use with insulating cylinder after, when the arc control device in insulating cylinder occurring or miscellaneous part are damaged, can keep in repair easily and change by opening port, thereby need not insulating cylinder is removed from sealed air chamber is inner, avoid sealed air chamber is damaged, realize convenient maintenance vacuum circuit-breaker.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the utility model vacuum circuit-breaker embodiment;
Fig. 2 is the structural representation of insulating cylinder among the utility model vacuum circuit-breaker embodiment;
Fig. 3 is the structural representation of integral type electric installation among the utility model vacuum circuit-breaker embodiment;
Fig. 4 is the structural representation of conductive clip among the utility model vacuum circuit-breaker embodiment.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
As Fig. 1-shown in Figure 4, the present embodiment vacuum circuit-breaker, comprise support 1, operating mechanism 2, insulating cylinder 3, arc control device 4 and insulated tension pole 5, operating mechanism 2 and insulating cylinder 3 are separately fixed at the both sides of support 1, one end of insulated tension pole 5 is connected with the moving contact 41 of arc control device 4, the linkage 21 of the other end attended operation mechanism 2 of insulated tension pole 5, insulating cylinder 3 is provided with first and goes out wiring connector 33 and second and go out wiring connector 34, first goes out wiring connector 33 is connected with the fixed contact 42 of arc control device 4, insulating cylinder 3 is provided with the cavity 31 of perforation, one end of cavity 31 is provided with end cap 32, end cap 32 dismountable ends that are fixed on insulating cylinder 3, arc control device 4 and insulated tension pole 5 are arranged in cavity 31; The present embodiment vacuum circuit-breaker also comprises integral type electric installation 6, integral type electric installation 6 comprises conductive clip 61 and is flexible coupling 62, conductive clip 61 offers installing hole 611, be flexible coupling and 62 be fixed on the conductive clip 61, the sidewall of installing hole 611 is provided with opening 612 and groove 613, the side that conductive clip 61 is positioned at opening 612 is provided with through hole 614, and the opposite side that conductive clip 61 is positioned at opening 612 is provided with screwed hole 615, through hole 614 and screwed hole 615 coaxial settings; Second goes out wiring connector 34 62 is connected with being flexible coupling, and moving contact 41 is inserted in the installing hole 611, and screw passes through hole 614 and is threaded in the screwed hole 615, and moving contact 41 is clamped in the installing hole 611.
Particularly, be connected reliably with conductive clip 61 in order to ensure moving contact 41, in the present embodiment be flexible coupling 62 and conductive clip 61 be fixed together, when assembling present embodiment vacuum circuit-breaker, only need conductive clip 61 is connected with the moving contact 41 of arc control device 4 in the vacuum circuit-breaker and get final product.After moving contact 41 is inserted in the installing hole 611, screw is passed through hole 614 to tighten in the screwed hole 615, in the screw-driving process, the aperture of opening 612 will diminish, the groove width of groove 613 also will diminish simultaneously, thereby make moving contact be mounted the solid and reliable clamping in hole 611, make the border direction of moving contact 41 evenly stressed, guarantee that moving contact 41 can be connected reliably with conductive clip 61, the requirement of the 611 pairs of accurates to dimension of installing hole on the conductive clip 61 is lower, can not require to cause moving contact 41 to detach from installing hole 611 because installing hole 611 machining accuracies reach.In addition, be flexible coupling and 62 directly be fixed on the conductive clip 61, in present embodiment vacuum circuit-breaker assembling process, only need conductive clip 61 and moving contact 41 are connected and fixed, thereby effective simplification the process of in the narrow space of insulating cylinder, assembling, make things convenient for the workman to assemble the present embodiment vacuum circuit-breaker efficiently.Preferably, being flexible coupling 62 is welded on the conductive clip 61, with guarantee to be flexible coupling 62 with conductive clip 61 firm being connected, also avoid adopting screw to connect simultaneously occurring being flexible coupling 62 loosening phenomenon to occur with conductive clip 61.Keep in repair the present embodiment vacuum circuit-breaker for the ease of the workman, the insulating cylinder 3 in the present embodiment is provided with the cavity 31 that connects fully, and this cavity 31 is used for installing parts such as arc control device 4 and insulated tension pole 5.Wherein, an end of insulating cylinder 3 is provided with end cap 32 sealing up an end of cavity 31, and the other end of insulating cylinder 3 is fixed on the support 1.In present embodiment vacuum circuit-breaker assembling process, earlier insulating cylinder 3 is fixed on the support 1, then, the port of parts such as arc control device 4 and insulated tension pole 5 from insulating cylinder 3 outsides is encased in the cavity 31, end cap 32 is fixed on the outside port of insulating cylinder 3 at last.When being damaged, the parts in the insulating cylinder 3 need repairing when changing, because cavity 31 is to connect fully, only need with end cap 32 from insulating cylinder 3 dismountings down, just the associated components in the cavity 31 can be taken out from cavity 31, just the associated components in can maintain and replace insulating cylinder 3, thereby need not with insulating cylinder 3 integral body therefrom press the inflation cabinet sealed air chamber in pull down, can avoid damaging sealed air chamber on the one hand, the device of maintain and replace insulating cylinder 3 inside that the workman can be more convenient on the other hand, reduce maintenance difficulty and reduced working strength of workers simultaneously, realize convenient maintenance present embodiment vacuum circuit-breaker.
Wherein, can clamp moving contact 41 more uniformly in order to ensure installing hole 611, opening 612 and groove 613 are oppositely arranged, guarantee in the screw-driving process, two parts up and down along line between opening 612 and the groove 613 in the installing hole 611 can be exerted pressure to moving contact 41 synchronously uniformly, guarantee that the good inwall with installing hole 611 in border of moving contact 41 contacts.In addition, in order to increase the contact area between conductive clip 61 and the moving contact 41, installing hole 611 is bellmouth, and is corresponding, and moving contact 41 is bullet.
In addition, the end of insulating cylinder 3 is provided with screwed hole (not shown), and end cap 32 cooperates with screwed hole by screw and is fastened on the insulating cylinder 3.Go out wiring connector 33 and be installed in the first support installing hole 321 and end cap 32 offers the first support installing hole 321, the first, go out wiring connector 34 and be arranged in the second support installing hole 311 and the sidewall of insulating cylinder 3 is provided with the second support installing hole 311, the second.Preferably, measure the contacting travel of present embodiment vacuum circuit-breaker for convenience, the sidewall of insulating cylinder 3 also is provided with stroke instrument connection 312, stroke instrument connection 312 is positioned at a side of insulated tension pole 5, and the staff can detect the contacting travel of arc control device 4 moving contacts 41 in the vacuum circuit-breaker easily by stroke instrument connection 312.In addition, also be provided with full skirt 313 on the sidewall of insulating cylinder 3, so that insulating cylinder 3 has suitable electrical equipment gap, improve the insulation effect of insulating cylinder 3.
Further, the both sides of support 1 are provided with dynamic seal 11, and insulated tension pole 5 passes dynamic seal 11 and is connected with linkage 21.Concrete, in the present embodiment vacuum circuit-breaker is assembled to, press in the inflation cabinet after, insulating cylinder 3 is arranged in the sealed air chamber that pressure is inflated cabinet, can effectively play the effect of movable sealing to insulated tension pole 5 by dynamic seal 11, guarantees the air-tightness of sealed air chamber.Preferably, dismounting present embodiment vacuum circuit-breaker, and convenience for convenience is connected the linkage 21 of operating mechanism 2 with insulated tension pole 5, and insulated tension pole 5 links together by connecting rod 22 with the linkage 21 of operating mechanism 2.Concrete, can regulate the position relation that is connected between linkage 21 and the insulated tension pole 5 by connecting rod 22, and when assembling or dismounting present embodiment vacuum circuit-breaker, can easily linkage 21 and insulated tension pole 5 be dismantled or link together by dismounting connecting rod 22.
The utility model also provides a kind of middle inflation cabinet of pressing, and comprises cabinet, is provided with sealed air chamber in the cabinet, also comprises vacuum circuit-breaker as above, and the insulating cylinder of vacuum circuit-breaker is positioned at sealed air chamber inside, and the operating mechanism of vacuum circuit-breaker is positioned at the sealed air chamber outside.
The vacuum circuit-breaker that the utility model provides and the middle inflation cabinet of pressing, by the sidewall at the installing hole of conductive clip opening and groove are set respectively, after the moving contact of arc control device is inserted in the installing hole, screw is passed through hole to be tightened in the screwed hole, in tightening the process of screw, opening on the installing hole sidewall will narrow down and groove also with suitable narrowing down, thereby solid and reliable being fixed in the installing hole with the moving contact of arc control device, avoid occurring because the installing hole machining accuracy is not high the phenomenon of moving contact and conductive clip loose contact, improved the reliability of vacuum circuit-breaker; And, be flexible coupling and directly be fixed on the conductive clip, can effective simplification the installation process of integral type electric installation, need not to adopt bolts and nuts to cooperate will to be flexible coupling, conductive clip and moving contact link together, reduced the inner space that takies vacuum circuit-breaker, more convenient assembling vacuum circuit-breaker.In addition, by insulating cylinder being provided with the cavity of perforation, and an end of insulating cylinder seals by detachable end, vacuum circuit-breaker is assembled to the vacuum circuit-breaker use with insulating cylinder after, when the arc control device in insulating cylinder occurring or miscellaneous part are damaged, can keep in repair easily and change by opening port, thereby need not insulating cylinder is removed from sealed air chamber is inner, avoid sealed air chamber is damaged, realize convenient maintenance vacuum circuit-breaker.
It should be noted that at last: above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although with reference to previous embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (10)
1. vacuum circuit-breaker, comprise support, operating mechanism, insulating cylinder, arc control device and insulated tension pole, described operating mechanism and described insulating cylinder are separately fixed at the both sides of support, one end of described insulated tension pole is connected with the moving contact of described arc control device, the other end of described insulated tension pole connects the linkage of described operating mechanism, described insulating cylinder is provided with first and goes out wiring connector and second and go out wiring connector, described first goes out wiring connector is connected with the fixed contact of described arc control device, it is characterized in that, described insulating cylinder is provided with the cavity of perforation, one end of described cavity is provided with end cap, the dismountable end that is fixed on described insulating cylinder of described end cap, described arc control device and described insulated tension pole are arranged in described cavity; Described vacuum circuit-breaker also comprises the integral type electric installation, described integral type electric installation comprises conductive clip and is flexible coupling, described conductive clip offers installing hole, described be flexible coupling be fixed on the described conductive clip, the sidewall of described installing hole is provided with opening and groove, the side that described conductive clip is positioned at described opening is provided with through hole, and the opposite side that described conductive clip is positioned at described opening is provided with screwed hole, described through hole and the coaxial setting of described screwed hole; Described second go out wiring connector with described be flexible coupling be connected, described moving contact is inserted in the described installing hole, screw passes described through hole whorl and is connected in the described screwed hole, described moving contact is clamped in the described installing hole.
2. vacuum circuit-breaker according to claim 1 is characterized in that, described opening and described groove are oppositely arranged.
3. vacuum circuit-breaker according to claim 1 is characterized in that, described be flexible coupling be welded on the described conductive clip.
4. according to the arbitrary described vacuum circuit-breaker of claim 1-3, it is characterized in that described moving contact is bullet, described installing hole is bellmouth.
5. vacuum circuit-breaker according to claim 1, it is characterized in that, described end cap offers the first support installing hole, described first goes out wiring connector is arranged in the described first support installing hole, the sidewall of described insulating cylinder is provided with the second support installing hole, and described second goes out wiring connector is arranged in the described second support installing hole.
6. vacuum circuit-breaker according to claim 1 is characterized in that, the sidewall of described insulating cylinder also is provided with the stroke instrument connection, and described stroke instrument connection is positioned at a side of described insulated tension pole.
7. vacuum circuit-breaker according to claim 1 is characterized in that, also is provided with full skirt on the sidewall of described insulating cylinder.
8. vacuum circuit-breaker according to claim 1 is characterized in that, the both sides of described support are provided with dynamic seal, and described insulated tension pole passes described dynamic seal and is connected with described linkage.
9. vacuum circuit-breaker according to claim 9 is characterized in that, the linkage of described insulated tension pole and described operating mechanism links together by connecting rod.
10. press the inflation cabinet in one kind, comprise cabinet, be provided with sealed air chamber in the described cabinet, it is characterized in that, also comprise arbitrary described vacuum circuit-breaker as claim 1-9, the insulating cylinder of described vacuum circuit-breaker is positioned at described sealed air chamber inside, and the operating mechanism of described vacuum circuit-breaker is positioned at described sealed air chamber outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220744975 CN203055771U (en) | 2012-12-31 | 2012-12-31 | Vacuum circuit breaker and medium-voltage inflation cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220744975 CN203055771U (en) | 2012-12-31 | 2012-12-31 | Vacuum circuit breaker and medium-voltage inflation cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203055771U true CN203055771U (en) | 2013-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220744975 Withdrawn - After Issue CN203055771U (en) | 2012-12-31 | 2012-12-31 | Vacuum circuit breaker and medium-voltage inflation cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203055771U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050327A (en) * | 2012-12-31 | 2013-04-17 | 青岛特锐德电气股份有限公司 | Vacuum circuit breaker and medium-pressure air inflation cabinet |
| CN111487510A (en) * | 2019-01-28 | 2020-08-04 | 平高集团有限公司 | Insulating pull rod characteristic testing device |
-
2012
- 2012-12-31 CN CN 201220744975 patent/CN203055771U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050327A (en) * | 2012-12-31 | 2013-04-17 | 青岛特锐德电气股份有限公司 | Vacuum circuit breaker and medium-pressure air inflation cabinet |
| CN103050327B (en) * | 2012-12-31 | 2016-01-13 | 青岛特锐德电气股份有限公司 | Vacuum circuit-breaker and middle pressure gas-filling cabinet |
| CN111487510A (en) * | 2019-01-28 | 2020-08-04 | 平高集团有限公司 | Insulating pull rod characteristic testing device |
| CN111487510B (en) * | 2019-01-28 | 2022-11-22 | 平高集团有限公司 | Insulating pull rod characteristic testing device |
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| 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: 20160113 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |