CN204190250U - Ring main unit - Google Patents
Ring main unit Download PDFInfo
- Publication number
- CN204190250U CN204190250U CN201420657748.4U CN201420657748U CN204190250U CN 204190250 U CN204190250 U CN 204190250U CN 201420657748 U CN201420657748 U CN 201420657748U CN 204190250 U CN204190250 U CN 204190250U
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- CN
- China
- Prior art keywords
- cabinet
- main unit
- ring main
- arc
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of ring main unit, comprise cabinet, cabinet door and arc-control device; The top of described cabinet is provided with top cover, the front end of cabinet is provided with cabinet door, the lower end of cabinet is arranged with two arc-control devices, the back side of cabinet door is provided with screw, screw embeds the back side being tightened to cabinet door by instrument, and screw contacts the copper cash that is fastened, copper cash is fixedly connected with the earthing screw of main cabinet, and cabinet door is provided with window; Described arc-control device is provided with floor stand and multiple arc extinguishing post, and arc extinguishing post is arranged on ring main unit inside by the interrupter of ring main unit bottom surface.The utility model is fixedly installed screw by the back side at movable doorboard, and screw contacts the copper cash that has been fastened, and the other end of copper cash contacts fixing with the earth point of main cabinet, thus prevents contact movable doorboard from getting an electric shock; The free electron dissociated in ring main unit can effectively be derived and ground connection by the arc-control device simultaneously arranged, and decreases the impact of electric arc on ring main unit.
Description
Technical field
The utility model relates to electric equipment, specifically a kind of ring main unit.
Background technology
Ring main unit core adopts on-load switch and fuse, has that structure is simple, volume is little, price is low, can improve power supply parameter and the advantage such as performance and power supply safety; The formation of electric arc is that between contact, neutral proton, by the process of dissociating, can produce electric arc in ring main unit in use procedure, and electric arc can produce larger impact to switch wherein and fuse.In addition, when the equipment of ring main unit declines for soft cabinet insulating properties, or external moisture sources impact is subject to, once main cabinet inner high voltage major loop electric leakage, the door-plate of metal material can conduct electricity or store electrostatic, and operating personnel, once touch executive component on door-plate and door-plate, can cause Danger Electric shock risk.
Utility model content
The purpose of this utility model is to provide a kind of and can eliminates electric arc and can prevent the ring main unit that gets an electric shock, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of ring main unit, comprises cabinet, cabinet door and arc-control device; The top of described cabinet is provided with top cover, the front end of cabinet is provided with cabinet door, the lower end of cabinet is arranged with two arc-control devices, wherein, the back side of cabinet door is provided with screw, and screw embeds the back side being tightened to cabinet door by instrument, and screw contacts the copper cash that is fastened, copper cash is fixedly connected with the earthing screw of main cabinet, and cabinet door is provided with window; Described arc-control device is provided with floor stand and multiple arc extinguishing post, arc extinguishing post is arranged on ring main unit inside by the interrupter of ring main unit bottom surface, multiple arc extinguishing post is fixedly connected with the end face of floor stand by tapped blind hole, the end face of floor stand is provided with multiple tapped blind hole, the bottom surface of floor stand is arranged at intervals with multiple through hole, and floor stand is fixedly connected with bottom surface with through hole by earthing screw, arc extinguishing post is fixedly connected with earthing screw by conductor wire; In addition, insulating cement is provided with in described tapped blind hole and through hole, arc extinguishing post comprises insulated column and conducting rod, the top of insulated column is provided with insulation blind hole, and the bottom of insulation blind hole is provided with conducting strip, conducting strip is connected with earthing screw by conductor wire, and the bottom of insulated column is fixedly connected with the tapped blind hole of floor stand, to contact with the conducting strip in insulation blind hole in the blind hole that conducting rod is arranged on insulated column, conducting rod is arranged in ring main unit.
Further: described floor stand is " U " shaped steel.
Further: the little length with floor stand bottom surface of the end face length of described floor stand.
Compared with prior art, the utility model is fixedly installed screw by the back side at movable doorboard, screw contacts the copper cash that has been fastened, the other end of copper cash contacts fixing with the earth point of main cabinet, so, electric charge on movable doorboard can be led by copper cash the earth point of main cabinet in real time, thus prevents contact movable doorboard from getting an electric shock, operation use safety; The free electron dissociated in ring main unit can effectively be derived and ground connection by the arc-control device simultaneously arranged, and decreases the impact of electric arc on ring main unit.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of ring main unit.
Fig. 2 is the structural representation of protection against electric shock cabinet door in a kind of ring main unit.
Fig. 3 is the perspective view of arc-control device in a kind of ring main unit.
Fig. 4 is the structural representation of arc-control device in a kind of ring main unit.
In figure: 1-cabinet, 2-top cover, 3-cabinet door, 4-window, 5-floor stand, 6-through hole, 7-screw, 8-arc extinguishing post, 9-copper cash, 51-screw, 81-insulated column, 82-conducting rod, 83-conducting strip, 84-conductor wire.
Embodiment
Be described in more detail below in conjunction with the technical scheme of embodiment to this patent.
Refer to Fig. 1-4, a kind of ring main unit, comprise cabinet 1, cabinet door 3 and arc-control device, the top of described cabinet 1 is provided with top cover 2, the front end of cabinet 1 is provided with cabinet door 3, the lower end of cabinet 1 is arranged with two arc-control devices, wherein, the back side of cabinet door 3 is provided with screw 7, screw 7 embeds the back side being tightened to cabinet door 3 by instrument, and screw 7 contacts the copper cash 9 that is fastened, copper cash 9 is fixedly connected with the earthing screw 51 of main cabinet, thus prevent contact cabinet door 3 from causing getting an electric shock, cabinet door 3 is provided with window 4, the ruuning situation of each equipment in ring main unit can be observed by perspective board 4, tour personnel discovering device defect in time can be convenient to, accident is avoided to occur, described arc-control device is provided with floor stand 5 and multiple arc extinguishing post 8, arc extinguishing post 8 is arranged on ring main unit inside by the interrupter of ring main unit bottom surface, multiple arc extinguishing post 8 is fixedly connected with by the end face of tapped blind hole with floor stand 5, the end face of floor stand 5 is provided with multiple tapped blind hole, the bottom surface of floor stand 5 is arranged at intervals with multiple through hole 6, and floor stand 5 is fixedly connected with bottom surface with through hole 6 by earthing screw 51, arc extinguishing post 8 is fixedly connected with earthing screw 51 by conductor wire 84, floor stand 5 is " U " shaped steel, the little length with floor stand 5 bottom surface of the end face length of floor stand 5, in addition, insulating cement is provided with in described tapped blind hole and through hole 6, arc extinguishing post 8 comprises insulated column 81 and conducting rod 82, the top of insulated column 81 is provided with insulation blind hole, and the bottom of insulation blind hole is provided with conducting strip 83, conducting strip 83 is connected with earthing screw 51 by conductor wire 84, and the bottom of insulated column 81 is fixedly connected with the tapped blind hole of floor stand 5, to contact with the conducting strip 83 in insulation blind hole in the blind hole that conducting rod 82 is arranged on insulated column 81, conducting rod 82 is arranged in ring main unit, in work, when carrying out ring main unit and installing, ring main unit and arc-control device are fixed, arc extinguishing post 8 on arc-control device is extended ring main unit inside simultaneously, be connected with the earthing screw 51 of ground connection by arc extinguishing post 8 because be provided with conductor wire 84 in floor stand 5, make ring main unit operationally, free electron is wherein adsorbed by the conducting rod 82 in arc extinguishing post 8 simultaneously, be connected to the earth by conductor wire 84 and earthing screw 51 again, eliminated the free electron in ring main unit, simultaneously because arc extinguishing post 8 and floor stand 5 are threaded connection, because when not needing to carry out arc extinguishing, arc extinguishing post 8 can be removed.
Claims (3)
1. a ring main unit, comprises cabinet (1), cabinet door (3) and arc-control device, it is characterized in that, the top of described cabinet (1) is provided with top cover (2), the front end of cabinet (1) is provided with cabinet door (3), the lower end of cabinet (1) is arranged with two arc-control devices, and wherein, the back side of cabinet door (3) is provided with screw (7), screw (7) embeds the back side being tightened to cabinet door (3) by instrument, a copper cash (9) and the upper contact of screw (7) is fastened, copper cash (9) is fixedly connected with the earthing screw (51) of main cabinet, and cabinet door (3) is provided with window (4), described arc-control device is provided with floor stand (5) and multiple arc extinguishing post (8), arc extinguishing post (8) is arranged on ring main unit inside by the interrupter of ring main unit bottom surface, multiple arc extinguishing post (8) is fixedly connected with by the end face of tapped blind hole with floor stand (5), the end face of floor stand (5) is provided with multiple tapped blind hole, the bottom surface of floor stand (5) is arranged at intervals with multiple through hole (6), and floor stand (5) is fixedly connected with bottom surface with through hole (6) by earthing screw (51), arc extinguishing post (8) is fixedly connected with earthing screw (51) by conductor wire (84), in addition, insulating cement is provided with in described tapped blind hole and through hole (6), arc extinguishing post (8) comprises insulated column (81) and conducting rod (82), the top of insulated column (81) is provided with insulation blind hole, and the bottom of insulation blind hole is provided with conducting strip (83), conducting strip (83) is connected with earthing screw (51) by conductor wire (84), the bottom of insulated column (81) is fixedly connected with the tapped blind hole of floor stand (5), to contact with the conducting strip (83) in insulation blind hole in the blind hole that conducting rod (82) is arranged on insulated column (81), conducting rod (82) is arranged in ring main unit.
2. a kind of ring main unit according to claim 1, is characterized in that, described floor stand (5) is " U " shaped steel.
3. a kind of ring main unit according to claim 1, is characterized in that, the little length with floor stand (5) bottom surface of the end face length of described floor stand (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420657748.4U CN204190250U (en) | 2014-11-06 | 2014-11-06 | Ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420657748.4U CN204190250U (en) | 2014-11-06 | 2014-11-06 | Ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204190250U true CN204190250U (en) | 2015-03-04 |
Family
ID=52622222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420657748.4U Expired - Fee Related CN204190250U (en) | 2014-11-06 | 2014-11-06 | Ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204190250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265908B (en) * | 2019-07-15 | 2024-06-04 | 广东佰林电气设备厂有限公司 | Electric shock prevention all-insulated switch cabinet |
-
2014
- 2014-11-06 CN CN201420657748.4U patent/CN204190250U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265908B (en) * | 2019-07-15 | 2024-06-04 | 广东佰林电气设备厂有限公司 | Electric shock prevention all-insulated switch cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20181106 |