CN112350643A - Two marine water pump trouble automatic switch-over control circuit - Google Patents
Two marine water pump trouble automatic switch-over control circuit Download PDFInfo
- Publication number
- CN112350643A CN112350643A CN202011252282.6A CN202011252282A CN112350643A CN 112350643 A CN112350643 A CN 112350643A CN 202011252282 A CN202011252282 A CN 202011252282A CN 112350643 A CN112350643 A CN 112350643A
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- Prior art keywords
- water pump
- intermediate relay
- stop
- switch
- control circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/027—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an over-current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention relates to a two ship water pump fault automatic switching control circuit.A first control circuit, a second control circuit and a first operation control circuit and a second operation control circuit are connected in parallel on an AC power supply; the first start-stop control circuit comprises a start button, a stop button and a start-stop intermediate relay of the first water pump which are sequentially connected in series; the first operation control circuit comprises a second normally open switch of a start-stop intermediate relay, a thermal relay bidirectional switch, a start-stop contactor and a normally closed switch of a second water pump start-stop contactor, which are sequentially connected in series; the second start-stop control circuit comprises a start button, a stop button and a start-stop intermediate relay of the second water pump which are sequentially connected in series; the second operation control circuit comprises a second normally open switch of a start-stop intermediate relay, a thermal relay bidirectional switch, a start-stop contactor and a normally closed switch of a first water pump start-stop contactor of a second water pump which are sequentially connected in series. The circuit automatically switches and controls, reduces the workload of personnel, improves the working efficiency and the service life of the water pump, and ensures the stability and the safety of the ship.
Description
Technical Field
The invention relates to a control circuit, in particular to a control circuit for automatically switching between two marine water pumps in fault.
Background
In present marine refrigerating unit's system, the marine water pump of refrigerating unit mostly sets up single and control and generally all be manual control mode, and operating personnel work load is big, breaks down like single water pump, can't in time effectively report to the police, and can't provide effective continuation of the journey to lead to the refrigerating unit to become invalid, influence the security of marine storage.
Disclosure of Invention
The invention provides a two ship water pump fault automatic switching control circuit which can automatically switch control, reduce the workload of personnel, improve the working efficiency and the service life of a water pump and ensure the stable safety of a ship.
The technical scheme adopted by the invention is as follows: the utility model provides a two marine water pump trouble automatic switch-over control circuit, includes that AC power, first water pump open and stop auxiliary relay and second water pump open and stop auxiliary relay, its characterized in that: the AC power supply is connected with a first water pump start-stop control circuit, a first water pump operation control circuit, a second water pump start-stop control circuit and a second water pump operation control circuit in parallel; the first water pump starting and stopping control circuit comprises a first water pump starting button, a first water pump stopping button and a first water pump starting and stopping intermediate relay which are sequentially connected in series, and a first normally open switch of the first water pump starting and stopping intermediate relay is connected to the first water pump starting button in parallel; the first water pump operation control circuit comprises a first water pump start-stop intermediate relay second normally open switch, a first water pump thermal relay bidirectional switch, a second water pump start-stop contactor normally closed switch and a first water pump start-stop contactor which are sequentially connected in series, wherein the second normally open switch of the first water pump start-stop intermediate relay is connected with a second water pump fault intermediate relay normally open switch in parallel, a normally closed contact of the first water pump thermal relay bidirectional switch is arranged between the first water pump start-stop intermediate relay second normally open switch and the second water pump start-stop contactor normally closed switch, and the normally open contact of the first water pump thermal relay bidirectional switch is connected back to an AC power supply through the first water pump fault intermediate relay; the second water pump starting and stopping control circuit comprises a second water pump starting button, a second water pump stopping button and a second water pump starting and stopping intermediate relay which are sequentially connected in series, and a first normally open switch of the second water pump starting and stopping intermediate relay is connected to the second water pump starting button in parallel; the second water pump operation control circuit comprises a second water pump start-stop intermediate relay second normally open switch, a second water pump thermal relay two-way switch, a first water pump start-stop contactor normally closed switch, a second water pump start-stop contactor, the second water pump start-stop intermediate relay second normally open switch is connected in parallel with a first water pump fault intermediate relay normally open switch, the normally closed contact of the second water pump thermal relay two-way switch is connected between the second water pump start-stop intermediate relay second normally open switch and the first water pump start-stop contactor normally closed switch, and the normally open contact of the second water pump thermal relay two-way switch is connected back to an AC power supply through the second water pump fault intermediate relay.
Further, still including first water pump flow control circuit and the second water pump flow control circuit of all parallelly connected on the AC power, first water pump flow control circuit is including the first water pump flow switch and the first water pump flow auxiliary relay of establishing ties in proper order, second water pump flow control circuit is including the second water pump flow switch and the second water pump flow auxiliary relay of establishing ties in proper order.
Further, a first water pump operation indicator lamp is connected to the first water pump start-stop contactor in parallel; and a second water pump operation indicating lamp is connected in parallel to the second water pump start-stop contactor.
Furthermore, a first water pump flow intermediate relay normally closed switch of the first water pump flow intermediate relay is connected in series with a second water pump fault intermediate relay normally open switch, and the first water pump flow intermediate relay and the second water pump fault intermediate relay are connected in parallel on a second normally open switch of the first water pump start-stop intermediate relay; and a second water pump flow intermediate relay normally-closed switch of the second water pump flow intermediate relay is connected in series with a first water pump fault intermediate relay normally-open switch, and the second water pump flow intermediate relay normally-open switch and the first water pump fault intermediate relay normally-open switch are connected in parallel on a second water pump start-stop intermediate relay normally-open switch.
The control method comprises the following steps: when the water pump needs to operate, a first water pump starting button is pressed, the first water pump stopping button is normally closed, the first water pump starting and stopping intermediate relay is electrified, meanwhile, the first and second normally open switches of the first water pump starting and stopping intermediate relay are closed, the first water pump thermal relay is electrified to enable a first water pump thermal relay bidirectional switch of the first water pump thermal relay to be closed at a normally closed contact, the first water pump starting and stopping contactor is electrified, the first water pump works, a first water pump operation indicator lamp is bright, a first water pump flow switch is closed when the flow is normal, the first water pump flow intermediate relay is electrified, the first water pump flow intermediate relay is opened on a second water pump operation control circuit, and at the moment, the second water pump does not work; when the first water pump is in failure, the first water pump thermal relay detects that the first water pump is overloaded and/or the first water pump flow switch detects that the water amount is too low, the first water pump thermal relay bidirectional switch is switched to the normally open contact, the first water pump failure intermediate relay is switched on, the first water pump start-stop contactor loses power, the first water pump is stopped, the first water pump operation indicator lamp is turned off, the first water pump flow switch is turned off to cut off the first water pump flow intermediate relay, the first water pump failure intermediate relay normally open switch is closed, the first water pump flow intermediate relay normally closed switch is closed, the second water pump thermal relay bidirectional switch is switched on to be closed at the normally closed contact, the second water pump start-stop contactor is powered on, the second water pump works, the second water pump operation indicator lamp is turned on, the second water pump flow switch is closed when the flow is normal, the second water pump flow intermediate relay is powered on, the second water pump flow intermediate normally closed relay is, at the moment, the first water pump does not work; otherwise, the second water pump is in failure in operation, and the control method is reversely controlled according to the steps; when the second water pump operates, overhaul first water pump, after troubleshooting is accomplished, press first water pump again and open and stop the button, first water pump opens and stops the auxiliary relay and is got electric, first water pump thermal relay bilateral switch is closed to the normally closed contact, first water pump opens and stops the contactor and gets electric, second water pump opens and stops among the control circuit first water pump and open and stop the contactor normally closed switch and open, the second water pump opens and stops the contactor and loses the electricity, first water pump resumes work again this moment, the second water pump is shut down, the first water pump of main operation is switched back to after accomplishing the maintenance.
Drawings
FIG. 1 is a control circuit diagram of the present invention.
In the figure: an AC power supply 1, a first water pump start button 2, a first water pump stop button 3, a first water pump start/stop intermediate relay 4, a first water pump start/stop intermediate relay first normally open switch 5, a first water pump start/stop intermediate relay second normally open switch 6, a first water pump thermal relay two-way switch 7, a first water pump start/stop contactor 8, a first water pump start/stop contactor normally closed switch 9, a first water pump operation indicator lamp 10, a first water pump fault intermediate relay 11, a first water pump fault intermediate relay normally open switch 12, a first water pump flow switch 13, a first water pump flow intermediate relay 14, a first water pump flow intermediate relay normally closed switch 15, a second water pump start button 16, a second water pump stop button 17, a second water pump start/stop intermediate relay 18, a second water pump start/stop intermediate relay first normally open switch 19, a second water pump start/stop intermediate relay second normally open switch 20, a first water pump start/stop relay normally, The system comprises a second water pump thermal relay bidirectional switch 21, a second water pump starting and stopping contactor 22, a second water pump starting and stopping contactor normally closed switch 23, a second water pump running indicator lamp 24, a second water pump fault intermediate relay 25, a second water pump fault intermediate relay normally open switch 26, a second water pump flow switch 27, a second water pump flow intermediate relay 28 and a second water pump flow intermediate relay normally closed switch 29.
Detailed Description
The invention is further illustrated by the following figures and examples.
FIG. 1 shows: the two ship water pump fault automatic switching control circuits comprise a first water pump starting and stopping intermediate relay, a second water pump starting and stopping intermediate relay, a first water pump flow control circuit and a second water pump flow control circuit which are all connected in parallel on an AC power supply 1, wherein the first water pump starting and stopping control circuit comprises a first water pump starting button 2, a first water pump stopping button 3 and a first water pump starting and stopping intermediate relay 4 which are sequentially connected in series, and a first water pump starting button is connected in parallel with a first normally open switch 5 of the first water pump starting and stopping intermediate relay; the first water pump operation control circuit comprises a first water pump start-stop intermediate relay second normally open switch 6, a first water pump thermal relay bidirectional switch 7, a second water pump start-stop contactor normally closed switch 23 and a first water pump start-stop contactor 8 which are sequentially connected in series, wherein a second water pump fault intermediate relay normally open switch 26 and a second water pump flow intermediate relay normally closed switch 29 which are sequentially connected in series are connected in parallel on the first water pump start-stop intermediate relay second normally open switch, a normally closed contact of the first water pump thermal relay bidirectional switch is arranged between the first water pump start-stop intermediate relay second normally open switch and the second water pump start-stop contactor normally closed switch, a first water pump operation indicator lamp 10 is connected in parallel on the first water pump start-stop contactor 8, and the normally open contact of the first water pump thermal relay bidirectional switch is connected back to an AC power supply through a first water pump fault intermediate relay 11; the first water pump flow control circuit comprises a first water pump flow switch 13 and a first water pump flow intermediate relay 14 which are sequentially connected in series. The second water pump start-stop control circuit comprises a second water pump start button 16, a second water pump stop button 17 and a second water pump start-stop intermediate relay 18 which are sequentially connected in series, and a first normally open switch 19 of the second water pump start-stop intermediate relay is connected in parallel on the second water pump start button; the second water pump operation control circuit comprises a second water pump start-stop intermediate relay second normally open switch 20, a second water pump heat relay bidirectional switch 21, a first water pump start-stop contactor normally closed switch 9 and a second water pump start-stop contactor 22 which are sequentially connected in series, a first water pump fault intermediate relay normally open switch 12 and a first water pump flow intermediate relay normally closed switch 15 which are sequentially connected in series are connected in parallel on the second water pump start-stop intermediate relay second normally open switch, a normally closed contact of the second water pump heat relay bidirectional switch is arranged between the second water pump start-stop intermediate relay second normally open switch and the first water pump start-stop contactor normally closed switch, a second water pump operation indicator lamp 24 is connected in parallel on the second water pump start-stop contactor 22, the normally open contact of the second water pump heat relay bidirectional switch is connected back to an AC power supply through a second water pump fault intermediate relay 25, the second water pump flow control circuit comprises a second water pump flow switch which is, 27 and a second water pump flow intermediate relay 28.
The control method of the circuit comprises the following steps:
1. starting a first water pump: pressing a first water pump starting button, enabling a first water pump stopping button to be normally closed, enabling a water pump starting and stopping intermediate relay to be electrified, enabling a first normally open switch and a second normally open switch of the first water pump starting and stopping intermediate relay to be closed simultaneously, enabling a first water pump thermal relay to be electrified to enable a first water pump thermal relay bidirectional switch to be closed at a normally closed contact, enabling a first water pump starting and stopping contactor to be electrified, enabling a first water pump to work, enabling a first water pump operation indicator lamp to be on, enabling a first water pump flow switch to be closed when the flow is normal, enabling a first water pump flow intermediate relay to be electrified, enabling the first water pump flow intermediate relay normally closed switch to be opened on a second water pump operation control circuit, and;
2. the first water pump is switched to the second water pump in a fault mode: when the first water pump thermal relay detects that the first water pump is overloaded and/or the first water pump flow switch detects that the water amount is too low, the first water pump thermal relay bidirectional switch is switched to a normally open contact to turn on a first water pump fault intermediate relay, the first water pump start-stop contactor loses power, the first water pump stops, the first water pump operation indicator lamp is turned off, the first water pump flow switch is turned off to turn off the first water pump flow intermediate relay, the normally open switch of the first water pump fault intermediate relay is closed, the normally closed switch of the first water pump flow intermediate relay is closed, the second water pump thermal relay bidirectional switch is turned on to be closed at the normally closed contact, the second water pump start-stop contactor is powered on, the second water pump works, the second water pump operation indicator lamp is on, the second water pump flow switch is closed when the flow is normal, the second water pump flow intermediate relay is powered on, the second water pump flow intermediate normally closed relay is, at the moment, the first water pump does not work;
3. and (3) fault removal and switching back to the first water pump of the main operation: when the second water pump operates, overhaul first water pump, after troubleshooting is accomplished, press first water pump again and open and stop the button, first water pump opens and stops the auxiliary relay and is got electric, first water pump thermal relay bilateral switch is closed to the normally closed contact, first water pump opens and stops the contactor and gets electric, second water pump opens and stops among the control circuit first water pump and open and stop the contactor normally closed switch and open, the second water pump opens and stops the contactor and loses the electricity, first water pump resumes work again this moment, the second water pump is shut down, the first water pump of main operation is switched back to after accomplishing the maintenance.
Claims (4)
1. The utility model provides a two marine water pump trouble automatic switch-over control circuit, includes that AC power, first water pump open and stop auxiliary relay and second water pump open and stop auxiliary relay, its characterized in that: the AC power supply is connected with a first water pump start-stop control circuit, a first water pump operation control circuit, a second water pump start-stop control circuit and a second water pump operation control circuit in parallel; the first water pump starting and stopping control circuit comprises a first water pump starting button, a first water pump stopping button and a first water pump starting and stopping intermediate relay which are sequentially connected in series, and a first normally open switch of the first water pump starting and stopping intermediate relay is connected to the first water pump starting button in parallel; the first water pump operation control circuit comprises a first water pump start-stop intermediate relay second normally open switch, a first water pump thermal relay bidirectional switch, a second water pump start-stop contactor normally closed switch and a first water pump start-stop contactor which are sequentially connected in series, wherein the second normally open switch of the first water pump start-stop intermediate relay is connected with a second water pump fault intermediate relay normally open switch in parallel, a normally closed contact of the first water pump thermal relay bidirectional switch is arranged between the first water pump start-stop intermediate relay second normally open switch and the second water pump start-stop contactor normally closed switch, and the normally open contact of the first water pump thermal relay bidirectional switch is connected back to an AC power supply through the first water pump fault intermediate relay; the second water pump starting and stopping control circuit comprises a second water pump starting button, a second water pump stopping button and a second water pump starting and stopping intermediate relay which are sequentially connected in series, and a first normally open switch of the second water pump starting and stopping intermediate relay is connected to the second water pump starting button in parallel; the second water pump operation control circuit comprises a second water pump start-stop intermediate relay second normally open switch, a second water pump thermal relay two-way switch, a first water pump start-stop contactor normally closed switch, a second water pump start-stop contactor, the second water pump start-stop intermediate relay second normally open switch is connected in parallel with a first water pump fault intermediate relay normally open switch, the normally closed contact of the second water pump thermal relay two-way switch is connected between the second water pump start-stop intermediate relay second normally open switch and the first water pump start-stop contactor normally closed switch, and the normally open contact of the second water pump thermal relay two-way switch is connected back to an AC power supply through the second water pump fault intermediate relay.
2. The two marine water pumps failure automatic switching control circuit according to claim 1, characterized in that: still including first water pump flow control circuit and the second water pump flow control circuit of all parallelly connected on the AC power, first water pump flow control circuit is including the first water pump flow switch and the first water pump flow auxiliary relay of establishing ties in proper order, second water pump flow control circuit is including the second water pump flow switch and the second water pump flow auxiliary relay of establishing ties in proper order.
3. The two marine water pumps failure automatic switching control circuit according to claim 1, characterized in that: a first water pump running indicator lamp is connected to the first water pump starting and stopping contactor in parallel; and a second water pump operation indicating lamp is connected in parallel to the second water pump start-stop contactor.
4. The two marine water pumps fault automatic switching control circuit according to claim 2, characterized in that: a first water pump flow intermediate relay normally closed switch of the first water pump flow intermediate relay is connected in series with a second water pump fault intermediate relay normally open switch, and the first water pump flow intermediate relay and the second water pump fault intermediate relay normally open switch are connected in parallel on a first water pump start-stop intermediate relay second normally open switch; and a second water pump flow intermediate relay normally-closed switch of the second water pump flow intermediate relay is connected in series with a first water pump fault intermediate relay normally-open switch, and the second water pump flow intermediate relay normally-open switch and the first water pump fault intermediate relay normally-open switch are connected in parallel on a second water pump start-stop intermediate relay normally-open switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011252282.6A CN112350643A (en) | 2020-11-11 | 2020-11-11 | Two marine water pump trouble automatic switch-over control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011252282.6A CN112350643A (en) | 2020-11-11 | 2020-11-11 | Two marine water pump trouble automatic switch-over control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN112350643A true CN112350643A (en) | 2021-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011252282.6A Pending CN112350643A (en) | 2020-11-11 | 2020-11-11 | Two marine water pump trouble automatic switch-over control circuit |
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| CN (1) | CN112350643A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112967555A (en) * | 2021-03-01 | 2021-06-15 | 河北交通职业技术学院 | Ship ballast water pump or fire pump or host machine affiliated oil and water pump real object simulation system |
| CN113096474A (en) * | 2021-03-01 | 2021-07-09 | 河北交通职业技术学院 | Marine bilge water pump object simulation system |
| CN113586413A (en) * | 2021-07-26 | 2021-11-02 | 深圳供电局有限公司 | Water pump control method and device, water pump station and storage medium |
| CN115790066A (en) * | 2023-02-08 | 2023-03-14 | 江苏兆胜空调有限公司 | Safety control circuit of marine refrigeration device and control method thereof |
-
2020
- 2020-11-11 CN CN202011252282.6A patent/CN112350643A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112967555A (en) * | 2021-03-01 | 2021-06-15 | 河北交通职业技术学院 | Ship ballast water pump or fire pump or host machine affiliated oil and water pump real object simulation system |
| CN113096474A (en) * | 2021-03-01 | 2021-07-09 | 河北交通职业技术学院 | Marine bilge water pump object simulation system |
| CN113586413A (en) * | 2021-07-26 | 2021-11-02 | 深圳供电局有限公司 | Water pump control method and device, water pump station and storage medium |
| CN115790066A (en) * | 2023-02-08 | 2023-03-14 | 江苏兆胜空调有限公司 | Safety control circuit of marine refrigeration device and control method thereof |
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