CN107193301A - The energy-saving control system and method for ship sea water pump - Google Patents
The energy-saving control system and method for ship sea water pump Download PDFInfo
- Publication number
- CN107193301A CN107193301A CN201710619973.7A CN201710619973A CN107193301A CN 107193301 A CN107193301 A CN 107193301A CN 201710619973 A CN201710619973 A CN 201710619973A CN 107193301 A CN107193301 A CN 107193301A
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- Prior art keywords
- water pump
- sea water
- energy
- temperature
- control unit
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- 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.)
- Pending
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- 239000013535 sea water Substances 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000013505 freshwater Substances 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 239000000498 cooling water Substances 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 description 5
- 238000004804 winding Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
- G05B11/42—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The present invention provides the energy-saving control system and method for a kind of ship sea water pump, and sea water pump uses transducer drive, and a Taiwan Straits water pump is in running status, and other sea water pumps are in holding state；Temperature sensor is arranged at cooling water outlet, the real time temperature of detection cooling fresh water；Control unit presets rated temperature；Control unit judges whether real time temperature is more than rated temperature；When real time temperature is more than rated temperature, control unit controls the frequency converter increase running frequency of any one Taiwan Straits water pump.Superior performance is the advantage is that, flexibly, strong antijamming capability is stable and reliable in work, and fully automatic operation is unattended for control mode；Lossless pump motor rotational speed regulation, realizes that water-carrying capacity, from zero to the step-less adjustment between maximum, makes system always work in maximum energy-saving state.
Description
Technical field
The present invention relates to a kind of energy-saving control system and method, more particularly to a kind of energy-saving control system of ship sea water pump
And method.
Background technology
Sea water pump, which provides seawater, to be used to cool down fresh water, and fresh water is used for cooling down shipborne equipment, and this takes full advantage of the cold of seawater
Amount.Seawater surface temperature change is also very big (4~30 DEG C)；Main sea water cooling pump design parameter considers limit Design (sea water temperature
32 DEG C of degree), and certain surplus is left, redundancy is larger.Sea water pump provides seawater and enters cooler and fresh water as cooling medium
Carry out heat exchange.Energy-saving effect significantly, and can make motor realize real soft start, reduce to seawater pipeline, regulating valve, plate
Cold hydraulic blow and abrasion, makes the operation safety and reliability of system, and can significantly save the maintenance cost of these equipment.
Due in practice, it is contemplated that during water pump one speed governing, the one constant speed paired running of same model, although scheduling is flexible, but
Due to that can not take into account the efficient operation stage of governor impeller and constant speed pump, in such cases, the scope of speed governing operation is very little.
Sea water pump energy conserving system, is that sea water pump uses double-speed motor, the method small investment implements simple currently on the market,
But energy-saving effect is limited；The speed change of asynchronous motor mainly is adjusted by changing the mode of connection of motor stator winding, is changed
Become magnetic pole logarithm, make simplex winding can be with the rotating speed of regulation motor.Motor can adjust high and low rotating speed, be connect by switching winding
Line changes the winding connection of motor coil, realizes energy saving motor.Because complex circuit, starting current impact to power network
Excessive, maintenance difficulty is big, and the flow and pressure transient of seawater pump discharge, the hydraulic blow cold to seawer outlet pipeline and plate are equal
System can be influenceed.
The content of the invention
The purpose of the present invention aims to provide the energy-saving control system and method for a kind of ship sea water pump, solves existing technology
Problem；To overcome the existing defects of above-mentioned prior art.
The present invention provides a kind of energy-saving control system of ship sea water pump, including：At least two Taiwan Straits water pumps, temperature sensor
And control unit；Sea water pump uses transducer drive, and a Taiwan Straits water pump is in running status, and other sea water pumps are in standby shape
State；Temperature sensor is arranged at cooling water outlet, the real time temperature of detection cooling fresh water；Control unit presets specified temperature
Degree；Control unit judges whether real time temperature is more than rated temperature；When real time temperature is more than rated temperature, control unit control is appointed
Anticipate a Taiwan Straits water pump frequency converter increase running frequency.
Further, the present invention provides a kind of energy-saving control system of ship sea water pump, can also have the feature that：Control
Unit processed controls the frequency converter of any one Taiwan Straits water pump to increase sea water pump increase operation of the mode of running frequency for running status
The sea water pump variable frequency starting of frequency and/or holding state enters running status.
Further, the present invention provides a kind of energy-saving control system of ship sea water pump, can also have the feature that：Control
The default rated temperature of unit processed is 36 DEG C.
Further, the present invention provides a kind of energy-saving control system of ship sea water pump, can also have the feature that：Control
The sea water pump of unit control running status processed and the sea water pump of holding state mutually switch.
Further, the present invention provides a kind of energy-saving control system of ship sea water pump, can also have the feature that：Often
Individual sea water pump includes point breaker, frequency converter, contactor, electrothermal relay and a motor；Frequency converter passes through point breaker and a way circuit
Connection, receives electric energy；Frequency converter passes through contactor and motor connection；Electrothermal relay is connected in parallel on frequency converter two ends；Contactor and heat
Relay linkage；Control unit is connected with each frequency converter, controls the running status of frequency converter；Control unit also with TEMP
Device is connected, and receives real time temperature.
Further, the present invention provides a kind of energy-saving control system of ship sea water pump, can also have the feature that：Sea
Water pump is four, is two-by-two one group；One group in running order, and another group is in stand-by state.
Further, the present invention provides a kind of energy-saving control system of ship sea water pump, can also have the feature that：Control
The unit processed accumulative working time per Taiwan Straits water pump, and control the working time per Taiwan Straits water pump identical.
In addition, the present invention provides a kind of energy-saving control method of ship sea water pump：One Taiwan Straits water pump is in running status, its
He is in holding state by sea water pump；The real time temperature of temperature sensor detection cooling fresh water；Judge whether real time temperature is more than volume
Constant temperature degree；When real time temperature is more than rated temperature, the frequency converter increase running frequency of any one Taiwan Straits water pump is controlled.
Further, the present invention provides a kind of energy-saving control method of ship sea water pump, can also have such special
Levy：Any one Taiwan Straits water pump frequency converter increase running frequency mode for running status sea water pump increase running frequency and/
Or the sea water pump variable frequency starting of holding state enters running status.
Further, the present invention provides a kind of energy-saving control method of ship sea water pump, can also have such special
Levy：Rated temperature is 36 DEG C.
The present invention provides the energy-saving control system and method for a kind of ship sea water pump, is realized using frequency converter to three-phase
The rotating speed of refrigerated sea water pump motor carries out frequency control, to change the rotating speed size to sea water pump, is detected using temperature sensor
The current temperature signal of heat exchanger cooling medium, coolant temperature changes, and the signal of collection will occur accordingly
Change, the current signal of control is inputted the signal gathered is converted into corresponding PID by change-over circuit, so as to control to become
The output voltage and frequency of frequency device, and then change the rotating speed of motor to change output, the final temperature for keeping system is constant；Should
The result of design of frequency conversion constant temperature system can operate with many actual thermostatic control systems, and can obtain reliable and stable fortune
Row effect and good energy-saving effect.
Brief description of the drawings
Fig. 1 is the structure chart of the energy-saving control system of the ship sea water pump of the present invention.
Embodiment
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the structure chart of the energy-saving control system of the ship sea water pump of the present invention.
As shown in figure 1, in the present embodiment, the energy-saving control system of ship sea water pump, including 4 Taiwan Straits water pumps 100, control list
Member 200 and temperature sensor 300.
Each sea water pump 100 includes：Divide breaker d, frequency converter VFD, contactor K, electrothermal relay J and motor M.Frequency converter
VFD receives electric energy by the breaker DD connections of point breaker d and way circuit.Frequency converter VFD is connected by contactor K and motor M
Connect, pass through the speed of service of FREQUENCY CONTROL motor.Electrothermal relay J is connected in parallel on frequency converter VFD two ends.Contactor K and electrothermal relay J
Linkage.
Control unit 200 is connected with each frequency converter VFD, the running status of control frequency converter, and the startup of control frequency converter,
The frequency closed and run.Control unit 200 is also connected with temperature sensor 300, receives real time temperature.Temperature sensor is set
Put at cooling water outlet, the real time temperature of detection cooling fresh water.Control unit presets 36 DEG C of rated temperature, certainly default temperature
Degree can change setting as needed.
The energy-saving control method of ship sea water pump：
Start, the energy-saving control system of ship sea water pump, under general state, the frequency converter variable frequency starting of a Taiwan Straits water pump,
Such as the seawater pump operation that motor M1 drives, subsequently into the working condition for determining frequency, seawater is delivered to fresh water cooled equipment.
When the temperature that the temperature sensor 300 of cooler outlet is detected more than control unit 100 presets rated temperature
At 36 DEG C, i.e. control unit judges whether real time temperature is more than 36 DEG C of rated temperature；Control unit can control operating sea
Water pump increase motor M1 working frequency, improves rotating speed, increases the flow of seawater.Certainly, control unit also can control it is standby in
Sea water pump motor M2 variable frequency startings, can equally reach increase seawater flow purpose.Certainly, control unit can be controlled
Motor M1 increases rotating speed and motor M2 starts execution simultaneously.
In the present embodiment, sea water pump is four, is two-by-two one group.One group in running order, and another group is in standby shape
State.If the parts damages of any Taiwan Straits water pump, control signal is sent by control unit and carries out thanking vigorously for sea water pump.Ship sea water pump
Energy-saving control system can be when needing 2 pump works, 1 Taiwan Straits pump variable frequency device and the work of 1 Taiwan Straits water pump power frequency startup.
In addition, the control unit accumulative working time per Taiwan Straits water pump, and control the working time per Taiwan Straits water pump, to realize
Many water pumps are recycled alternate run, the balanced average operation time of each pump, it is to avoid water pump rust is dead.
The present invention provides the energy-saving control system and method for a kind of ship sea water pump, and one is installed at cooler water outlet
Temperature sensor, continuous measurement cooler outlet house steward's fresh water temperature, signal feeds back to control unit；Set fresh water temperature
Be worth (36 DEG C), outlet monitoring temperature value feed back to automatic frequency adjustment system, enter line frequency adjustment, driving seawater pump motor according to
The change of frequency and change rotating speed, the flow of sea water pump also changes therewith, thus constitutes a closed loop automatic constant-temperature variable frequency adjustment system
System；When seawater pumping unit is faulty, i.e., when the states such as excessively stream, short circuit occur for any motor or frequency converter, signal is fed back to
Control unit, switching device will automatically switch to standby sea water pump, it is ensured that the safety and reliability of system.It is powerful, use
Long lifespan.
The present invention provides the energy-saving control system and method for a kind of ship sea water pump, is entered using industrial programmable controllers
Row programming Control；Superior performance, flexibly, strong antijamming capability is stable and reliable in work for control mode, the unmanned value of fully automatic operation
Keep；Lossless pump motor rotational speed regulation, realizes that water-carrying capacity, from zero to the step-less adjustment between maximum, always works in system
Maximum energy-saving state, " how many temperature being needed, how many temperature reduced "；High powered water pump motor can be realized soft open by frequency converter
It is dynamic, to power network and pipe network without impact, greatly prolong the service life of water pump, motor, pipe network and other control devices；Many water pumps
Recyclable alternate run, the balanced average operation time of each pump, it is to avoid water pump rust is dead；System operation noise is small, temperature
Constant, control accuracy is high；The flow and pressure ratio of seawater pump discharge are more steady, make the service condition of sea water pump and are improved, together
When reduce the hydraulic blow cold to seawer outlet pipeline and plate；When sea water pump frequency converter breaks down, system can be automatically by
Bypass cabinet is switched to power frequency state, it is ensured that the safe operation of salt water cooling system, redundancy is good, can meet the performance of different operating modes
Need；Equipment complex defencive function is complete, and (excessively stream, overvoltage, overload, phase shortage, stall, power supply phase are uneven, water source excessive low water level protection
Deng) and faulty inspection function and failure from writing function；When sea water pump is normally run, its rotating speed is adjusted by frequency converter, from
And automatically adjusting for rate of discharge and pressure is realized, reduce the mechanical wear of regulating valve；Equipment volume is small, saves space, peace
It is convenient to fill；Save running cost：On the one hand diesel oil is saved, two aspects reduce maintenance expense；High performance closed loop control,
Add the reliability of system；System simplifies, and reliability is improved；With energy-efficient, energy-saving effect is obvious；Motor can be realized more
For steady and progressive flexible startup and stopping；The multi-protective functions such as integrated under-voltage, excessively stream, overvoltage, overheat, hypervelocity, effectively
The protection system of safety.
Claims (10)
1. a kind of energy-saving control system of ship sea water pump, it is characterised in that including：At least two Taiwan Straits water pumps, temperature sensor
And control unit；
Wherein, the sea water pump uses transducer drive, and a sea water pump is at running status, other described sea water pumps
In holding state；
The temperature sensor is arranged at the cooling water outlet, the real time temperature of detection cooling fresh water；
Described control unit presets rated temperature；
Described control unit judges whether the real time temperature is more than the rated temperature；When the real time temperature is more than the volume
Constant temperature degree, described control unit controls the frequency converter increase running frequency of any one sea water pump.
2. the energy-saving control system of ship sea water pump according to claim 1, it is characterised in that：Described control unit is controlled
The mode of the frequency converter increase running frequency of any one sea water pump runs frequency for the sea water pump increase of running status
The sea water pump variable frequency starting of rate and/or holding state enters running status.
3. the energy-saving control system of ship sea water pump according to claim 1, it is characterised in that：Described control unit is preset
The rated temperature be 36 DEG C.
4. the energy-saving control system of ship sea water pump according to claim 1, it is characterised in that：Described control unit is controlled
The sea water pump of running status and the sea water pump of holding state mutually switch.
5. the energy-saving control system of ship sea water pump according to claim 1, it is characterised in that：Each sea water pump bag
Include a point breaker, frequency converter, contactor, electrothermal relay and motor；
The frequency converter is connected by described point of breaker with way circuit, receives electric energy；The frequency converter passes through the contactor
With the motor connection；The electrothermal relay is connected in parallel on the frequency converter two ends；The contactor links with the electrothermal relay；
Described control unit is connected with each frequency converter, controls the running status of the frequency converter；
Described control unit is also connected with temperature sensor, receives the real time temperature.
6. the energy-saving control system of ship sea water pump according to claim 1, it is characterised in that：The sea water pump is four
Platform, is two-by-two one group；One group in running order, and another group is in stand-by state.
7. the energy-saving control system of ship sea water pump according to claim 1, it is characterised in that：Described control unit adds up
The working time of every sea water pump, and control the working time of every sea water pump.
8. a kind of energy-saving control method of ship sea water pump, it is characterised in that：
One sea water pump is in running status, and other described sea water pumps are in holding state；
The real time temperature of the temperature sensor detection cooling fresh water；
Judge whether the real time temperature is more than the rated temperature；When the real time temperature is more than the rated temperature, control
The frequency converter increase running frequency of any one sea water pump.
9. the energy-saving control method of ship sea water pump according to claim 8, it is characterised in that：Any one seawater
The mode of the frequency converter increase running frequency of pump is the sea water pump increase running frequency and/or holding state of running status
The sea water pump variable frequency starting enters running status.
10. the energy-saving control method of ship sea water pump according to claim 8, it is characterised in that：The rated temperature is
36℃。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710619973.7A CN107193301A (en) | 2017-07-26 | 2017-07-26 | The energy-saving control system and method for ship sea water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710619973.7A CN107193301A (en) | 2017-07-26 | 2017-07-26 | The energy-saving control system and method for ship sea water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107193301A true CN107193301A (en) | 2017-09-22 |
Family
ID=59884225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710619973.7A Pending CN107193301A (en) | 2017-07-26 | 2017-07-26 | The energy-saving control system and method for ship sea water pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN107193301A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110515320A (en) * | 2018-05-22 | 2019-11-29 | 西门子股份公司 | Drive control method, drive system, processing system and storage medium |
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Application publication date: 20170922 |