CN202772657U - Control circuit preventing power down amid power supply switching process - Google Patents
Control circuit preventing power down amid power supply switching process Download PDFInfo
- Publication number
- CN202772657U CN202772657U CN 201220456049 CN201220456049U CN202772657U CN 202772657 U CN202772657 U CN 202772657U CN 201220456049 CN201220456049 CN 201220456049 CN 201220456049 U CN201220456049 U CN 201220456049U CN 202772657 U CN202772657 U CN 202772657U
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- power down
- down preventing
- loop
- power
- button
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Abstract
Disclosed is a control circuit for preventing power down amid power supply switching process, comprising a starting loop (1) and a stopping loop (2). The control circuit is further connected with a power down preventing loop (3), wherein the normal open contact K3 of a power down preventing relay of the power down preventing loop (3) is parallelly connected to two ends of the starting button S1 of the starting loop (1). The technology takes the local and remote control into account, thereby having broad applicability. The successful application of the technology is capable of improving the reliability of the electrical device, avoiding the power down resulting from the switching of the power supply, reducing the labor intensity of the operators, and ensuring the safety and smoothness of the production process. The control circuit of the utility model solves the power down problem of a power utilization device caused by long switching time or the decrease of the usability of the major contactor in the control circuit resulting from long-term usage when the conventional double-power-supply control circuit switches the power supply.
Description
Technical field
The utility model relates to dual power supply control technology field, relates in particular to a kind of control loop that prevents device looses power when electrical source exchange.
Background technology
In large scale industry is produced, the power supply of power consumption equipment extensively adopts the double loop power supply power supply, need under certain condition between the double loop power supply to carry out the quick automatic switching power supply by apparatus for fast switching, when power supply switches, if electrical source exchange overlong time, or owing to cause main contactor (relay) hydraulic performance decline in the long-term use procedure, then can cause main contactor or relay to disconnect because the dead electricity overlong time makes its power down preventing contact, thereby cause the power consumption equipment power down, impact is produced.
Summary of the invention
The technical problems to be solved in the utility model: the control loop of power down preventing when a kind of electrical source exchange is provided, to solve conventional dual power supply control circuit when the electrical source exchange, because main contactor causes the power consumption equipment power-off problems because Long-Term Properties descends in the switching time long or control loop.
Technical solutions of the utility model:
The control loop of power down preventing during a kind of electrical source exchange, it comprises startup loop and stop loop, also is connected to the power down preventing loop on control loop, the normally opened contact K3 of the power down preventing relay in power down preventing loop is connected in parallel on the start button S1 two ends that start the loop.
The power down preventing loop comprises excises on the spot power down preventing button S4 and drops on the spot power down preventing button S3, excise on the spot power down preventing button S4 one termination control power firestreak, another termination drops into the input of power down preventing button S3 on the spot, drop on the spot the slew relay normally-closed contact K2 input of the output termination stop loop of power down preventing button S3, slew relay normally-closed contact K2 output termination starts loop start relay normally open contact K1 input, starting relay normally opened contact K1 output is taken over control power down relay coil KM3 input A1, power down preventing relay coil KM3 output terminals A 2 connects the control zero-power line, and power down preventing relay normally open contact K3 is connected in parallel on and drops on the spot power down preventing button S3 two ends.
The power down preventing loop also comprises long-range input power down preventing contact S04 and long-range excision power down preventing contact S03, long-range input power down preventing contact S04 is connected on and excises on the spot power down preventing button S4 and drop on the spot between the power down preventing button S3, and long-range excision power down preventing contact S03 is connected in parallel on the control power firestreak and drops on the spot between the power down preventing button S3.
The power down preventing relay disconnects relay for time-delay.
The beneficial effects of the utility model:
The utility model starts loop and power down preventing loop of increase, stop loop basis in routine, the time-delay in power down preventing loop is disconnected the start button two ends that relay normally open contact is connected in parallel on the startup loop, after the control loop power down, time-delay disconnects relay normally open contact and keeps connecting, make and start loop continuation closure, the power down preventing loop is provided with and drops on the spot and excise on the spot button and long-range input and long-range excision contact simultaneously, has the advantage such as fast easy to use, the utility model is on the basis of original control loop, transform a little and can finish, the cost of required increase equipment is low, present technique has considered to reach on the spot the situation of Long-distance Control, applicability is extensive, the successful Application of present technique, can improve the reliability of electric equipment, avoid causing device looses power can alleviate operation personnel's labour intensity because power supply switches, guarantee that production procedure safety is smooth, solved conventional dual power supply control circuit when electrical source exchange, because main contactor causes the power consumption equipment power-off problems because Long-Term Properties descends in the switching time long or control loop.
Description of drawings:
Fig. 1 the utility model wiring schematic diagram.
Embodiment:
Embodiment by reference to the accompanying drawings 1 pair of the utility model further specifies: the control loop of power down preventing during a kind of electrical source exchange, it comprises startup loop 1 and stop loop 2, also is connected to power down preventing loop 3 on control loop.
Control power acquisition 220V alternating current, start loop 1 and comprise start button S1 and starting relay, start button S1 one terminates at upper another termination slew relay normally-closed contact K2 input of control power firestreak L, slew relay normally-closed contact K2 output is connected on the input A1 of starting relay control coil KM1, the A2 end of starting relay control coil KM1 is connected with normally-closed contact K0 input, normally-closed contact K0 output terminal connecting zero line N, the normally opened contact K1 of starting relay, the normally opened contact K3 of the power down preventing relay in power down preventing loop 3 and remote activation contact S01 all are connected in parallel on the start button S1.
Stop loop 2 comprises stop button S2, long-range contact S02 and the slew relay of stopping, stop button S2 one terminates on the live wire L, the input A1 of another termination slew relay control coil KM2, the output terminals A 2 connecting to neutral line N of slew relay control coil KM2, the long-range contact S02 that stops to be connected in parallel on the stop button S2.
Power down preventing loop 3 comprises excises on the spot power down preventing button S4 and drops on the spot power down preventing button S3, excise on the spot power down preventing button S4 one termination control power firestreak L, another termination drops into the input of power down preventing button S3 on the spot, drop on the spot the slew relay normally-closed contact K2 input of the output termination stop loop 2 of power down preventing button S3, slew relay normally-closed contact K2 output termination starts loop 1 starting relay normally opened contact K1 input, starting relay normally opened contact K1 output is taken over control power down relay coil KM3 input A1, power down preventing relay coil KM3 output terminals A 2 connects the control zero-power line, power down preventing relay normally open contact K3 drops into power down preventing button S3 two ends with being connected in parallel on, long-range input power down preventing contact S04 is connected on and excises on the spot power down preventing button S4 and drop on the spot between the power down preventing button S3, and long-range excision power down preventing contact S03 is connected in parallel on control power firestreak L and drops on the spot between the power down preventing button S3.
The power down preventing relay disconnects relay for time-delay.
Relay as herein described can replace with A.C. contactor.
Claims (4)
1. the control loop of power down preventing during an electrical source exchange, it comprises startup loop (1) and stop loop (2), it is characterized in that: also be connected to power down preventing loop (3) on control loop, the normally opened contact K3 of the power down preventing relay of power down preventing loop (3) is connected in parallel on the start button S1 two ends that start loop (1).
2. the control loop of power down preventing during a kind of electrical source exchange according to claim 1, it is characterized in that: power down preventing loop (3) comprise and excise on the spot power down preventing button S4 and drop on the spot power down preventing button S3, excise on the spot power down preventing button S4 one termination control power firestreak, another termination drops into the input of power down preventing button S3 on the spot, drop on the spot the slew relay normally-closed contact K2 input of the output termination stop loop (2) of power down preventing button S3, slew relay normally-closed contact K2 output termination starts loop (1) starting relay normally opened contact K1 input, starting relay normally opened contact K1 output is taken over control power down relay coil KM3 input A1, power down preventing relay coil KM3 output terminals A 2 connects the control zero-power line, and power down preventing relay normally open contact K3 is connected in parallel on and drops on the spot power down preventing button S3 two ends.
3. the control loop of power down preventing during a kind of electrical source exchange according to claim 2, it is characterized in that: power down preventing loop (3) also comprise long-range input power down preventing contact S04 and long-range excision power down preventing contact S03, long-range input power down preventing contact S04 is connected on and excises on the spot power down preventing button S4 and drop on the spot between the power down preventing button S3, and long-range excision power down preventing contact S03 is connected in parallel on the control power firestreak and drops on the spot between the power down preventing button S3.
4. the control loop of power down preventing during a kind of electrical source exchange according to claim 2, it is characterized in that: the power down preventing relay disconnects relay for time-delay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220456049 CN202772657U (en) | 2012-09-10 | 2012-09-10 | Control circuit preventing power down amid power supply switching process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220456049 CN202772657U (en) | 2012-09-10 | 2012-09-10 | Control circuit preventing power down amid power supply switching process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202772657U true CN202772657U (en) | 2013-03-06 |
Family
ID=47779199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220456049 Expired - Fee Related CN202772657U (en) | 2012-09-10 | 2012-09-10 | Control circuit preventing power down amid power supply switching process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202772657U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519747A (en) * | 2018-03-02 | 2018-09-11 | 韩骐馨 | Middle and primary schools' dormitory power supply management device |
| CN109474061A (en) * | 2018-12-21 | 2019-03-15 | 中国航发控制***研究所 | Low pressure drop power-supplying circuit |
| CN110943515A (en) * | 2019-12-17 | 2020-03-31 | 北京空间飞行器总体设计部 | On-orbit anti-power-off system and method for spacecraft storage battery |
-
2012
- 2012-09-10 CN CN 201220456049 patent/CN202772657U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519747A (en) * | 2018-03-02 | 2018-09-11 | 韩骐馨 | Middle and primary schools' dormitory power supply management device |
| CN108519747B (en) * | 2018-03-02 | 2021-12-17 | 国网江苏省电力有限公司无锡供电分公司 | Power supply management device for dormitories of primary and middle schools |
| CN109474061A (en) * | 2018-12-21 | 2019-03-15 | 中国航发控制***研究所 | Low pressure drop power-supplying circuit |
| CN109474061B (en) * | 2018-12-21 | 2021-09-03 | 中国航发控制***研究所 | Low-voltage-drop power supply circuit |
| CN110943515A (en) * | 2019-12-17 | 2020-03-31 | 北京空间飞行器总体设计部 | On-orbit anti-power-off system and method for spacecraft storage battery |
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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: 20130306 Termination date: 20150910 |
|
| EXPY | Termination of patent right or utility model |