CN207319076U - Powerhouse of hydropower station seepage drainage control system - Google Patents
Powerhouse of hydropower station seepage drainage control system Download PDFInfo
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- CN207319076U CN207319076U CN201721350981.8U CN201721350981U CN207319076U CN 207319076 U CN207319076 U CN 207319076U CN 201721350981 U CN201721350981 U CN 201721350981U CN 207319076 U CN207319076 U CN 207319076U
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- switch
- relay
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- powerhouse
- lcu
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Abstract
Field of water conservancy is the utility model is related to, discloses a kind of powerhouse of hydropower station seepage drainage control system, PLC in switch board is solved and breaks down, and can not now realize the problem of Leakage water system automatically controls.Including LCU, PLC, across the PLC control circuit in a distant place, fluid level transmitter and liquid-level switch；LCU is connected with fluid level transmitter, liquid-level switch respectively；Across the PLC control circuit in a distant place includes power supply, the first relay, the second relay, first switch, second switch and draining pump soft strater；LCU, so as to complete the control to draining pump soft strater, realizes the start-up and shut-down control of draining pump by controlling first switch and second switch.The utility model is controlled suitable for powerhouse of hydropower station seepage drainage.
Description
Technical field
It the utility model is related to field of water conservancy, more particularly to powerhouse of hydropower station seepage drainage control system.
Background technology
PLC：Programmable Logic Controller, programmable logic controller (PLC)；LCU：Local Control
Unit, local control unit.
It is that distant place LCU sends startup, stops letter under normal circumstances at present for powerhouse of hydropower station seepage drainage control system
The input module DI, LCU of PLC need to go indirect control seepage from powerhouse draining by switch board number into seepage from powerhouse draining switch board
Pump is opened, stopped.Seepage from powerhouse drainage control system plays critical effect in whole power station control system.In seepage from powerhouse
In draining pump operational process, if PLC breaks down in switch board, automatically controlling for Leakage water system can not now be realized,
If processing is not in time, the risk of water logging workshop, the safe and stable operation of serious threat to power plant are had.
Utility model content
The technical problems to be solved in the utility model is：A kind of powerhouse of hydropower station seepage drainage control system is provided, is solved
PLC breaks down in switch board, and can not now realize the problem of Leakage water system automatically controls.
To solve the above problems, the technical solution adopted in the utility model is：Powerhouse of hydropower station seepage drainage control system,
Including LCU and PLC, PLC is used to control draining pump start and stop；It is characterized in that, further include across the PLC control circuit in a distant place, liquid level becomes
Device and liquid-level switch are sent, LCU is connected with fluid level transmitter, liquid-level switch respectively, and across the PLC control circuit in a distant place includes power supply, the
One relay, the second relay, first switch, second switch and draining pump soft strater；First switch and second switch point
Do not controlled by LCU；The cathode of power supply connect at the same time one end of first switch, the first relay the first normally opened contact one end,
One end of second switch, the other end of first switch connect the other end of the first normally opened contact of the first relay, second at the same time
One end of the normally-closed contact of relay, the other end of the normally-closed contact of the second relay connect the one of the coil of the first relay
End, the other end of the coil of the first relay connect at the same time power cathode, the second relay coil one end, the second relay
Coil other end connection second switch the other end, the second normally opened contact of the first relay and draining pump soft strater
Input circuit is connected.
Further, the liquid-level switch switchs for float type liquid level.
The beneficial effects of the utility model are：Base of the utility model in original powerhouse of hydropower station seepage drainage control system
Increase a distant place across PLC control circuit, fluid level transmitter and liquid-level switch on plinth, can be obstructed by across the PLC control circuit in a distant place
Local control cabinet PLC controls are crossed, and directly draining pump is controlled by distant place LCU, breach traditional seepage from powerhouse draining
Control system pattern, can be in the case that PLC breaks down in seepage from powerhouse drainage control system, still can be to seepage from powerhouse draining
System is automatically controlled, and ensures the operation of system safety and reliability.
Brief description of the drawings
Fig. 1 is the circuit diagram of the coiler part of embodiment repeat circuit；
Fig. 2 is the circuit diagram of draining pump soft strater part in embodiment.
Numbered in figure：SW1 is first switch, and SW2 is second switch, and K1A is the coil of the first relay, K1C1 first
First normally opened contact of relay, K1C2 are the second normally opened contact of the first relay, and the coil of the second relays of K2A, K2B is
The normally-closed contact of second relay.
Embodiment
Embodiment provides a kind of powerhouse of hydropower station seepage drainage control system, including LCU, PLC, across the PLC control electricity in a distant place
Road, fluid level transmitter and float type liquid level switch；Wherein, LCU is connected with fluid level transmitter, float type liquid level switch respectively；PLC
For controlling draining pump start and stop；As illustrated in fig. 1 and 2, across the PLC control circuit in a distant place includes 24V power supplys, the first relay, second
Relay, first switch SW1, second switch SW2 and draining pump soft strater；First switch SW1 and second switch SW2 difference
Controlled by LCU；The cathode of power supply connects one end of first switch SW1, the first normally opened contact K1C1 of the first relay at the same time
One end, one end of second switch SW2, the other end of first switch SW1 connect the first normally opened contact of the first relay at the same time
The other end of K1C1, the second relay normally-closed contact K2B one end, the other end of the normally-closed contact K2B of the second relay connects
One end of the coil K1A of the first relay is connect, the other end of the coil K1A of the first relay connects power cathode, second at the same time
One end of the coil K2A of relay, the other end of the other end connection second switch SW2 of the coil K2A of the second relay, first
Second normally opened contact K1C2 of relay connects with the input circuit of draining pump soft strater.
When system works, LCU is opened by gathering analog signals and float type liquid level that now fluid level transmitter is sent out
The on-off model sent out is closed, so that opening, stopping for seepage drainage pump is controlled, it is specific as follows：
When leakage collecting well fluid level is high, LCU, which is sent, opens pump order, control first switch SW1 closures, then the first relay
The coil K1A of device obtains electric, and the first normally opened contact K1C1 and the second normally opened contact K1C2 of the first relay closure, draining pump is soft to be opened
The input circuit of dynamic device is connected, and directly initiating seepage drainage by draining pump soft strater pumps；
When leakage collecting well fluid level is low, LCU sends termination of pumping order, and control second switch SW2 is closed, the second relay
Coil K2A obtains electric, and the normally-closed contact K2B of the second relay is disconnected, the coil K1A dead electricity of the first relay, then the first relay
The second normally opened contact of device K1C2 is disconnected, and the input circuit of draining pump soft strater disconnects, and is directly stopped by draining pump soft strater
Only seepage drainage pumps.
The basic principle of the utility model and main feature are the foregoing described, the description of specification simply illustrates this practicality
New principle, on the premise of not departing from the spirit and scope of the utility model, the utility model also have various change and change
Into these various changes and improvements fall within the scope of the claimed invention.
Claims (2)
1. powerhouse of hydropower station seepage drainage control system, including LCU and PLC, PLC are used to control draining pump start and stop；Its feature exists
In, further include across the PLC control circuit in a distant place, fluid level transmitter and liquid-level switch, LCU respectively with fluid level transmitter, liquid-level switch
Connection, across the PLC control circuit in a distant place include power supply, the first relay, the second relay, first switch, second switch and row
Water pump soft strater；First switch and second switch are controlled by LCU respectively；The cathode of power supply connects the one of first switch at the same time
Hold, one end, one end of second switch of the first normally opened contact of the first relay, the other end of first switch connects first at the same time
One end of the other end of first normally opened contact of relay, the normally-closed contact of the second relay, the normally-closed contact of the second relay
The other end connect the first relay coil one end, the other end of the coil of the first relay connect at the same time power cathode,
One end of the coil of second relay, the other end of the other end connection second switch of the coil of the second relay, the first relay
Second normally opened contact of device is connected with the input circuit of draining pump soft strater.
2. powerhouse of hydropower station seepage drainage control system according to claim 1, it is characterised in that the liquid-level switch is
Float type liquid level switchs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721350981.8U CN207319076U (en) | 2017-10-19 | 2017-10-19 | Powerhouse of hydropower station seepage drainage control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721350981.8U CN207319076U (en) | 2017-10-19 | 2017-10-19 | Powerhouse of hydropower station seepage drainage control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207319076U true CN207319076U (en) | 2018-05-04 |
Family
ID=62381960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721350981.8U Active CN207319076U (en) | 2017-10-19 | 2017-10-19 | Powerhouse of hydropower station seepage drainage control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207319076U (en) |
-
2017
- 2017-10-19 CN CN201721350981.8U patent/CN207319076U/en active Active
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