CN204407887U - Handcart switch cabinet internal arc protective device - Google Patents
Handcart switch cabinet internal arc protective device Download PDFInfo
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- CN204407887U CN204407887U CN201520073007.6U CN201520073007U CN204407887U CN 204407887 U CN204407887 U CN 204407887U CN 201520073007 U CN201520073007 U CN 201520073007U CN 204407887 U CN204407887 U CN 204407887U
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- handcart
- arc
- electric arc
- copper bar
- switch cabinet
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Abstract
Handcart switch cabinet internal arc protective device disclosed in the utility model, comprise Electric arc monitoring equipment, electric arc detecting device and arc protection handcart, Electric arc monitoring equipment is arranged on the inside of switch cubicle; Electric arc detecting device is arranged in the low-pressure chamber of switch cubicle; Arc protection handcart is arranged in the breaker chamber of switch cubicle; Electric arc detecting device is electrically connected with arc protection handcart; arc protection handcart comprises chassis, mounting panel, sleeve pipe, acting arm, blow-out element, copper bar and grounding copper bar; chassis is provided with handcart slide mechanism; mounting panel is vertically mounted on chassis; sleeve pipe is installed on a mounting board; one end of sleeve pipe connects acting arm; the position of the corresponding fixed contact in one end of acting arm is provided with moving contact; the other end of sleeve pipe connects copper bar; copper bar is connected with blow-out element, and blow-out element is arranged on chassis by grounding copper bar.The utility model can fault electric arc in monitoring switch cabinet, and promptly extinguishes fault electric arc, thus plays the effect of protection switch cabinet.
Description
Technical field
The utility model relates to a kind of arc protection device, refers in particular to a kind of handcart switch cabinet internal arc protective device.
Background technology
In electric power system, conventional 10kV switch cubicle high pressure compartment comprises bus-bar room, cable vault and breaker chamber, but all Electric arc monitoring equipment is not installed in each compartment, when equipment breaks down generation arc light, also switch trip signal cannot be sent in time to its monitoring.Especially when switch cabinet bus breaks down; excision reaches between 100ms-1000ms fault time; fault electric arc can not be extinguished rapidly; and the temperature of arc light origination point can reach 10000K; so high temperature will cause copper bar, aluminium to arrange and melt down and vaporization; make that cable melts down, cable coating layer catches fire, and cause stained in cabinet, protective paint destroys by fire, clear up difficulty.In addition, high temperature, gases at high pressure also may be diffused into adjacent discs at a terrific speed, thus cause the accident that many group switch cubicles burn simultaneously.Meanwhile, the high-temperature heating air discharged during arc burning, causes copper bar to gasify and volumetric expansion tens thousand of times, thus makes the hurried rising of switch cubicle internal pressure.The burst pressure that it produces will cause switch cubicle disk body to be out of shape, even broken.
In view of this, a kind of handcart switch cabinet internal arc protective device of the present inventor's specialized designs, this case produces thus.
Utility model content
The purpose of this utility model is to provide a kind of handcart switch cabinet internal arc protective device, with the fault electric arc in monitoring switch cabinet, and promptly extinguishes fault electric arc, thus plays the effect of protection switch cabinet.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of handcart switch cabinet internal arc protective device, comprise Electric arc monitoring equipment, electric arc detecting device and arc protection handcart, Electric arc monitoring equipment is arranged on the inside of switch cubicle; Electric arc detecting device is arranged in the low-pressure chamber of switch cubicle; Arc protection handcart is arranged in the breaker chamber of switch cubicle; Electric arc detecting device is electrically connected with arc protection handcart; arc protection handcart comprises chassis, blow-out element, copper bar and grounding copper bar; chassis is provided with handcart slide mechanism; handcart is provided with contact arm; the position of the corresponding fixed contact in one end of contact arm is provided with moving contact; its other end connects copper bar, and copper bar is connected with blow-out element, and blow-out element is arranged on chassis by grounding copper bar.
Preferably, described Electric arc monitoring equipment is a plurality of probe.
Preferably, described probe is arranged on the bus-bar room of switch cubicle, cable vault and breaker chamber respectively.
Preferably, also comprise current transformer, current transformer is electrically connected with described electric arc detecting device.
Preferably, also comprise socket, socket is arranged in the breaker chamber of described switch cubicle, is electrically connected with arc protection handcart for electric arc detecting device.
The beneficial effects of the utility model are:
Light intensity is judged by Electric arc monitoring equipment (as probe); electric arc detecting device identification arc fault; and sending extinguish arcs signal to arc protection handcart, bus is connected to ground by blow-out element by arc protection handcart, realizes the short circuit of system three-phase metallic earthing.Fault current will flow to the metallic earthing of arc protection handcart.Simultaneously at switch cubicle internal fault electric arc nidus, because electric arc arc voltage reduces, causing trouble arc extinction, plays a protective role.Blow-out element of the present utility model action within the time that 5ms is even shorter, extinguishes internal arc, effectively protects the switch cubicle on this section of bus.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model arc protection handcart.
Label declaration
Probe 1, electric arc detecting device 2, arc protection handcart 3; chassis 31, acting arm 32, blow-out element 33; copper bar 34, grounding copper bar 35, handcart slide mechanism 36; sleeve pipe 37, moving contact 38, socket 39; bus-bar room 4, bus 41, fixed contact 42; low-pressure chamber 5, breaker chamber 6, cable vault 7.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model preferred embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As depicted in figs. 1 and 2, the handcart switch cabinet internal arc protective device that the utility model discloses, comprise Electric arc monitoring equipment, electric arc detecting device 2 and arc protection handcart 3, Electric arc monitoring equipment is arranged on the inside of switch cubicle, bus 41 and fixed contact 42 is provided with in the bus-bar room 4 of switch cubicle, bus 41 connects fixed contact 42, electric arc detecting device 2 is arranged in the low-pressure chamber 5 of switch cubicle, arc protection handcart 3 is arranged in the breaker chamber 6 of switch cubicle, electric arc detecting device 2 is electrically connected with arc protection handcart 3, arc protection handcart 3 comprises chassis 31, mounting panel 32, blow-out element 33, copper bar 34 and grounding copper bar 35, chassis 31 is provided with handcart slide mechanism 36, mounting panel 32 is vertically mounted on chassis 31, sleeve pipe 37 is arranged on mounting panel 32, one end of sleeve pipe 37 connects acting arm 32, the position of the corresponding fixed contact 42 in one end of acting arm 32 is provided with moving contact 38, the other end of sleeve pipe 37 connects copper bar 34, copper bar 34 is connected with blow-out element 33, blow-out element 33 is arranged on chassis 31 by grounding copper bar 35.Staff only by driving handcart slide mechanism 36, need shift arc protection handcart 3 onto service position (moving contact 38 contacts with fixed contact 42) from switch cubicle test position, putting into operation, protect switch cubicle interior unit cell model.
Electric arc monitoring equipment has multiple, the Electric arc monitoring equipment of this embodiment is a plurality of probes 1, the bus-bar room 4 that probe 1 is arranged on switch cubicle respectively, cable vault 7 and breaker chamber 6, to realize the monitoring of each compartment internal fault electric arc in switch cubicle, guarantee the fail safe of equipment further.
In order to improve the fail safe of monitoring further, handcart switch cabinet internal arc protective device also comprises current transformer, and current transformer is electrically connected with electric arc detecting device 2, and current transformer gathers electric current, thus judges arc fault current amplitude.
In the present embodiment, handcart switch cabinet internal arc protective device, also comprises socket 39, and socket 39 is arranged in the breaker chamber 6 of described switch cubicle, is electrically connected with arc protection handcart 3 for electric arc detecting device 2.
Principle of the present utility model is as follows: when switch cubicle produces fault electric arc, the probe 1 in each compartment of switch cubicle can judge light intensity, and current transformer gathers arc fault current signal.Electric arc detecting device 2 can identify arc fault within the extremely short time, and sends extinguish arcs signal to arc protection handcart 3.Bus 41 is connected to ground by blow-out element 33 by arc protection handcart 3, realizes the short circuit of system three-phase metallic earthing.Fault current will flow to the metallic earthing of arc protection handcart 3.Simultaneously at switch cubicle internal fault electric arc nidus, because electric arc arc voltage reduces, causing trouble arc extinction, plays a protective role.The utility model action within the time that 5ms is even shorter, extinguishes internal arc, effectively protects switchgear.
The utility model can not only monitor fault electric arc, and initiatively the bus 41 of guilty culprit is carried out metallic earthing, thus extinguishes fault electric arc, avoids failure propagation, the safety of protection personnel and equipment.The utility model can being less than extinguish fast fault electric arc in the 5ms time, avoid causing device damage and personnel's injury because of inside switch cabinet arc fault, and the time of user's service restoration was foreshortened in 2 hours by original 2 days to 3 week, reduce user and the loss of supply.
A series of detailed description listed is above only illustrating for possible embodiments of the present invention; they are also not used to limit protection range of the present utility model, all do not depart from the utility model skill Equivalent embodiments of doing of spirit or change all should be included within protection range of the present utility model.
Claims (5)
1. a handcart switch cabinet internal arc protective device, is characterized in that: comprise Electric arc monitoring equipment, electric arc detecting device and arc protection handcart, Electric arc monitoring equipment is arranged on the inside of switch cubicle; Electric arc detecting device is arranged in the low-pressure chamber of switch cubicle; Arc protection handcart is arranged in the breaker chamber of switch cubicle; Electric arc detecting device is electrically connected with arc protection handcart; arc protection handcart comprises chassis, blow-out element, copper bar and grounding copper bar; chassis is provided with handcart slide mechanism; handcart is provided with contact arm; the position of the corresponding fixed contact in one end of contact arm is provided with moving contact; its other end connects copper bar, and copper bar is connected with blow-out element, and blow-out element is arranged on chassis by grounding copper bar.
2. handcart switch cabinet internal arc protective device as claimed in claim 1, is characterized in that: described Electric arc monitoring equipment is a plurality of probe.
3. handcart switch cabinet internal arc protective device as claimed in claim 2, is characterized in that: described probe is arranged on the bus-bar room of switch cubicle, cable vault and breaker chamber respectively.
4. handcart switch cabinet internal arc protective device as claimed in claim 1, it is characterized in that: also comprise current transformer, current transformer is electrically connected with described electric arc detecting device.
5. handcart switch cabinet internal arc protective device as claimed in claim 1, it is characterized in that: also comprise socket, socket is arranged in the breaker chamber of described switch cubicle, is electrically connected with arc protection handcart for electric arc detecting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520073007.6U CN204407887U (en) | 2015-01-30 | 2015-01-30 | Handcart switch cabinet internal arc protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520073007.6U CN204407887U (en) | 2015-01-30 | 2015-01-30 | Handcart switch cabinet internal arc protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204407887U true CN204407887U (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520073007.6U Active CN204407887U (en) | 2015-01-30 | 2015-01-30 | Handcart switch cabinet internal arc protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204407887U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356754A (en) * | 2015-07-15 | 2017-01-25 | Ls产电株式会社 | Structure of switchgear with arc eliminator |
| CN110011211A (en) * | 2019-04-26 | 2019-07-12 | 华翔翔能电气股份有限公司 | A kind of middle-placed switch cabinet with photographic device |
-
2015
- 2015-01-30 CN CN201520073007.6U patent/CN204407887U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356754A (en) * | 2015-07-15 | 2017-01-25 | Ls产电株式会社 | Structure of switchgear with arc eliminator |
| US10020643B2 (en) | 2015-07-15 | 2018-07-10 | Lsis Co., Ltd. | Structure of switchgear with arc eliminator |
| CN110011211A (en) * | 2019-04-26 | 2019-07-12 | 华翔翔能电气股份有限公司 | A kind of middle-placed switch cabinet with photographic device |
| CN110011211B (en) * | 2019-04-26 | 2023-11-14 | 华翔翔能科技股份有限公司 | Centrally installed switchgear with camera device |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |