CN201742152U - Power-off emergency protection device - Google Patents
Power-off emergency protection device Download PDFInfo
- Publication number
- CN201742152U CN201742152U CN2010202370689U CN201020237068U CN201742152U CN 201742152 U CN201742152 U CN 201742152U CN 2010202370689 U CN2010202370689 U CN 2010202370689U CN 201020237068 U CN201020237068 U CN 201020237068U CN 201742152 U CN201742152 U CN 201742152U
- Authority
- CN
- China
- Prior art keywords
- power
- contactor
- protection device
- load
- storage battery
- 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
Links
- 238000003860 storage Methods 0.000 claims abstract description 11
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000009776 industrial production Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Stand-By Power Supply Arrangements (AREA)
Abstract
The utility model relates to a power failure emergency protection device remains original contactor and alarm signal starting switch, and the direct current battery both ends that will add are passed through 2 normally closed auxiliary contacts that the contactor increased simultaneously and are connected with the load. The power-off protection device is in an online standby state of the storage battery at ordinary times, and is switched to a working state in an emergency when power is cut off, and stable direct current provided by the battery is provided for a power load, so that the backup online power-off protection device is formed, equipment loss caused by power failure is avoided, and normal switching and operation of safety equipment are effectively guaranteed.
Description
Technical field
The utility model belongs to electric protective device, the current failure emergency protective device of single devices in particularly a kind of industrial production system.
Background technology
A lot of places all are to use DC power supply as power source in the industrial production, no matter but the many high continuitys that all need to keep production of voltage, to guarantee the operating rate of equipment.Yet because a variety of causes, no matter be subjective or objectively, phenomenons such as outage that appearance, the especially natural calamity of equipment fault cause all being arranged unavoidably, die or cut off the water supply is in case occur causing serious equipment loss.For preventing the equipment loss; taking of having connects an equipment alarm signal enabling switch before the equipment contactor that connects DC power supply is often driven auxiliary contact; and then 2 in contactor is often left auxiliary contact be connected in the load; though safety means have been played the certain protection effect, this protective device is inoperative for the loss of power accident.
Summary of the invention
The purpose of this utility model aims to provide a kind of simple in structure, and is safe and reliable, can guarantee the normal switch of safety means when stopping cutting off the power supply, and avoids the current failure emergency protective device of equipment loss.
The solution that the utility model is taked is:
A kind of current failure emergency protective device; be on the basis that keeps original contactor and alarm signal starting switch; set up direct-flow storage battery, and increase by 2 normally closed auxiliary contacts on contactor, the direct-flow storage battery two ends are connected in the load by 2 normally closed auxiliary contacts of contactor.
Contactor energising work during normal operation, contactor often open auxiliary contact closure, load wait work; When there was fault in system, the alarm signal starting switch cut out, loaded work piece; The normally closed auxiliary contact of contactor is opened, and storage battery is cut off control loop, is in off-line state, and storage battery keeps the full voltage stand-by state.
During outage, the contactor outage quits work, and the auxiliary contact of often opening of contactor are replied original off-state, and load cut-off is uncontrollable; Simultaneously, the contactor normally closed auxiliary contact is also replied closure state, and load is worked immediately, enters the stand-by state starting load, guarantees site safety.And contactor often leaves auxiliary contact and disconnects the cut-out major loop, makes storage battery and load become the loop, and other ring currents are not provided.Be that power-off protection apparatus is in the online stand-by state of storage battery at ordinary times; when having a power failure, promptly switch to operating state; the stable DC electricity that battery is provided offers uses electric loading; make it to form the online power-off protection apparatus of backup type; the equipment loss of having avoided outage to cause has effectively guaranteed the normal switch and the running of safety means.
Description of drawings
Accompanying drawing is a current failure emergency protective device schematic diagram.
Among the figure: KM is that contactor, KA are that alarm signal starting switch, power supply are the 24V direct current.
Embodiment
By accompanying drawing as seen, the utility model ties up on the basis that keeps original contactor KM and alarm signal starting switch KA, sets up a 24V direct-flow storage battery, and increases by 2 normally closed auxiliary contacts on contactor KM.Its mode of connection is that the two ends with direct-flow storage battery are connected on 2 normally closed auxiliary contacts of contactor KM, and 2 normally closed auxiliary contacts of contactor KM are connected with load simultaneously, form controlled loop.
Claims (1)
1. current failure emergency protective device; comprise contactor and alarm signal starting switch, it is characterized in that, set up direct-flow storage battery; and on contactor, increasing by 2 normally closed auxiliary contacts, the direct-flow storage battery two ends are connected in the load by 2 normally closed auxiliary contacts of contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202370689U CN201742152U (en) | 2010-06-25 | 2010-06-25 | Power-off emergency protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202370689U CN201742152U (en) | 2010-06-25 | 2010-06-25 | Power-off emergency protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201742152U true CN201742152U (en) | 2011-02-09 |
Family
ID=43557430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202370689U Expired - Fee Related CN201742152U (en) | 2010-06-25 | 2010-06-25 | Power-off emergency protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201742152U (en) |
-
2010
- 2010-06-25 CN CN2010202370689U patent/CN201742152U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20110209 Termination date: 20160625 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |