CN2201693Y - Single, 3-phase a.c dual level automatic controller - Google Patents
Single, 3-phase a.c dual level automatic controller Download PDFInfo
- Publication number
- CN2201693Y CN2201693Y CN 94212008 CN94212008U CN2201693Y CN 2201693 Y CN2201693 Y CN 2201693Y CN 94212008 CN94212008 CN 94212008 CN 94212008 U CN94212008 U CN 94212008U CN 2201693 Y CN2201693 Y CN 2201693Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- phase alternating
- alternating current
- liquid level
- actuated controller
- 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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- Control Of Multiple Motors (AREA)
Abstract
The utility model relates to a single or three-phase ac dual liquid level automatic controller composed of a power source, a liquid level testing circuit, a voltage limitation circuit, a time delay circuit, a logical circuit and an alternation circuit. The utility model can automatically control the running of one or two electrical machines according to the water level conditions in a lower pool and an upper pool. Because the controller uses the voltage limitation circuit, the over frequency of the starting of the electrical machine is avoided. The protection of insufficiency phase is realized by using a power source transformer, so that the integrated protection ability and the control capability of the electrical machine are enhanced.
Description
The utility model relates to a kind of single, three-phase alternating current biliquid position self-actuated controller.
Existing biliquid position self-actuated controller mainly is made up of testing circuit, logic recognition circuit, open-phase protection circuit and control circuit.Be characterized in that a biliquid position self-actuated controller can only control a motor, function singleness, Comprehensive Control ability and protective capability are poor.
The utility model aims to provide a kind ofly can control a motor rotation or two motors replace or parallel running and stronger single, the three-phase alternating current biliquid position self-actuated controller of integrated protection ability, to overcome above-mentioned deficiency.
Single, the three-phase alternating current biliquid position self-actuated controller that the utility model proposes mainly by power supply, liquid level detection circuit, voltage limiting circuit, delay circuit, logical circuit and alternately circuit form.Power supply is formed through transformation, rectification, filtering by single phase alternating current power supply or three-phase alternating-current supply; Liquid level detection circuit is made up of detection circuit, amplifying circuit, relay.Power supply send logical signal to give the delay circuit input end after voltage limiting circuit is differentiated, simultaneously, liquid level detection circuit is according to the water level situation of sink, upper pool, also send logical signal to the delay circuit input end, after time-delay, enter logical circuit, after differentiating, finish the output driving to replacing the circuit signalling again, with the control motor rotation.
Further describe the formation and the principle of this list, three-phase alternating current biliquid position self-actuated controller below in conjunction with drawings and Examples.
Accompanying drawing is single, three-phase alternating current biliquid position self-actuated controller circuit theory diagrams.
With reference to accompanying drawing, its principle of work is described below:
By T
2, D
12-D
16, C
5Form transformation, rectification, filtering circuit and by R
13-R
23, D
17-D
20, IC
1The voltage decision circuitry of forming is formed voltage limiting circuit.When the power supply overvoltage or when under-voltage, the voltage limiting circuit output low level is via IC
2After the delay circuit time-delay that constitutes, enter by IC
3, R
26, R
27, C
1, C
2, C
3The logical circuit of forming after differentiating, stops output drive signal; When supply voltage just often, voltage limiting circuit output high level.Detection circuit is by power transformer T on the other hand
1, T
2Secondary, detecting electrode K
1, K
2, K
3, K
4, K
5, K
6, neon bulb L
1, L
2, bridge heap D
1-D
4, D
5-D
8Form two rectifier switch circuit, detecting electrode K
2With K
3, K
5With K
6Connection, disconnect respectively by relay J
1, J
2Control.When sink A liquid level reaches in advance to set, by T2 level of transformer, bridge heap D
1-D
4Neon bulb L
1The rectifier switch circuit turn-on of forming is to by R7-R
12, BG
1, BG
2The amplifying circuit feed signals of forming, relay J after amplifying
1Work is to delay circuit IC
2Input end send high level; After the delay circuit time-delay, enter by IC
3, R
26, R
27, C
1, C
2, C
3The logical circuit of forming, after judging, output control signal, relay J
3Work, C delivers to relay J with drive signal
4Pin 3, relay J
4By BG
5, R
28, R
29, C
4, IC
4The timing circuit control of forming is firing point 1 down, motor M
1Running after running a period of time, if upper pool B water level does not also reach presetting bit, is then replacing under the circuit control relay J
4Firing point 2, motor M
2Running, motor M
1Stall, such two motor M
1, M
2Just the running that can hocket if will walk abreast running, then will be put 1, be put 2 and link and can realize.R
1-R
6, BG
3, BG
4The amplifying circuit of having formed sink B testing circuit.In operation process, in case sink A water level is lower than presetting bit or upper pool B water level reaches presetting bit, this controller all stops output drive signal immediately, avoids motor idle running and the damage submersible pump.
Because single, the three-phase alternating current biliquid position self-actuated controller that the utility model proposes have voltage limiting circuit; can avoid the electric motor starting overfrequency; reduction of service life; this controller adopts motor rotation of logical circuit may command or controls the running of two motors simultaneously in addition; utilize power transformer to realize phase failure protection simultaneously, in case the phase of owing, transformer can't operate as normal; all the other each several parts do not have normal working voltage, so can't work.This controller These characteristics has strengthened integrated protection ability and control ability to motor greatly.
Claims (6)
1, a kind of single, three-phase alternating current biliquid position self-actuated controller is characterized in that by power supply, liquid level detection circuit, voltage limiting circuit, delay circuit, logical circuit and alternately circuit form; Power supply is formed through transformation, rectification, filtering by single phase alternating current power supply or three-phase alternating-current supply; Liquid level detection circuit is made up of detection circuit, amplifying circuit, relay; Voltage limiting circuit is made up of transformer, rectifying and wave-filtering and voltage decision circuitry; Alternately circuit is made up of timing circuit and relay; Power supply is after voltage limiting circuit is differentiated, send logical signal to give the delay circuit input end, simultaneously, liquid level detection circuit is according to sink, the water level situation of upper pool, also send logical signal to the delay circuit input end, after time-delay, enter logical circuit, after differentiating, finish the output driving to replacing the circuit signalling again, with the control motor rotation.
2, single, three-phase alternating current biliquid self-actuated controller according to claim 1 is characterized in that the voltage decision circuitry is by T
2, D
12-D
16, C
5, R
13-R
23, D
17-D
20, IC
2Deng composition.
3, single, three-phase alternating current biliquid position self-actuated controller according to claim 1 is characterized in that delay circuit is by IC
2Constitute.
4, single, three-phase alternating current biliquid position self-actuated controller according to claim 1 is characterized in that logical circuit is by IC
3, R
26, R
27, C
1, C
2, C
3Deng composition.
5, single, three-phase alternating current biliquid position self-actuated controller according to claim 1 is characterized in that liquid level detection circuit is by T
1, T
2Secondary, K
1-K
6, L
1, L
2, D
1-D
8, R
1-R
12, BG
1-BG
4, J
1, J
2Deng composition.
6, single, three-phase alternating current biliquid position self-actuated controller according to claim 1 is characterized in that alternately circuit is by BG
5, R
28, R
29, IC
4, J
4Deng composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94212008 CN2201693Y (en) | 1994-05-12 | 1994-05-12 | Single, 3-phase a.c dual level automatic controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94212008 CN2201693Y (en) | 1994-05-12 | 1994-05-12 | Single, 3-phase a.c dual level automatic controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2201693Y true CN2201693Y (en) | 1995-06-21 |
Family
ID=33828995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94212008 Expired - Fee Related CN2201693Y (en) | 1994-05-12 | 1994-05-12 | Single, 3-phase a.c dual level automatic controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2201693Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676984A (en) * | 2012-09-25 | 2014-03-26 | 张美沛 | Liquid level controller based on PID |
-
1994
- 1994-05-12 CN CN 94212008 patent/CN2201693Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676984A (en) * | 2012-09-25 | 2014-03-26 | 张美沛 | Liquid level controller based on PID |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |