CN106574624A - Water supply device - Google Patents
Water supply device Download PDFInfo
- Publication number
- CN106574624A CN106574624A CN201480080998.9A CN201480080998A CN106574624A CN 106574624 A CN106574624 A CN 106574624A CN 201480080998 A CN201480080998 A CN 201480080998A CN 106574624 A CN106574624 A CN 106574624A
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- Prior art keywords
- mentioned
- temperature
- motor
- water supply
- frequency converter
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The present invention makes it possible to perform time management for a water supply device without using a timer unit in a water supply device. Provided is a water supply device having a plurality of pumps, a plurality of electrical motors for respectively rotationally driving the plurality of pumps, a plurality of cooling fans respectively attached to the plurality of electrical motors, a plurality of inverters for respectively varying the rotation speeds of the plurality of electrical motors, and a control device for controlling the operation/deactivation of the plurality of inverters. The water supply device is characterized in that: the plurality of inverters are each attached to part of a housing forming an outer periphery of an armature of each of the plurality of electrical motors, and configured to detect the temperature of the housing with a temperature detector disposed in the inverter; and that the control device detects the housing temperatures of the plurality of electrical motors or the temperatures of the plurality of inverters by using the temperature detectors, and estimates the time on the basis of the detected temperatures and operation states of the electrical motors.
Description
Technical field
The present invention relates to a kind of water supply installation, it adopts multiple pumps, the plurality of pump to enter respectively by using multiple frequency converters
The motor of row speeds control is driven.
Background technology
The water supply of the multiple pumps being driven using the motor for carrying out speeds control respectively by using multiple frequency converters
Device, preferably according to the moment, what day carry out modification control method.Generally well-known method is to arrange time set (timing means)
To carry out the control at correspondence moment.(with reference to patent document 1)
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2012-229699
The content of the invention
Invent problem to be solved
But, in the control method using above-mentioned prior art, it is necessary to using time set (timing means), and need
All the time battery or battery are powered or prepared in advance to time set.Under the feelings for possessing battery, it is also possible to because of the battery longevity
Life expires and occurs to have a power failure and lose time information.
The purpose of the present invention is to manage at the moment for not using timing means to carry out water supply installation.
For solving the scheme of problem
In order to solve above-mentioned problem, for example with the structure described in the scope being claimed.The present invention includes multiple solutions
The scheme of certainly above-mentioned problem, but if enumerating wherein one, be then：Detected using the temperature detector for being arranged at frequency converter
The temperature of motor field frame, is estimated based on the temperature change calculated according to the operating condition of the temperature and motor for detecting
Moment.
Invention effect
Using the present invention, do not use timing means just can carry out the control at correspondence moment, stable water supply can be carried out.
Description of the drawings
Fig. 1 is the figure for representing the outside drawing that pump drive motor is integrally formed with frequency converter.
Fig. 2 is the expanded view of the motor with frequency converter of Fig. 1.
Fig. 3 is the integrally-built figure of the water supply installation for representing the present embodiment 1 to 3.
Fig. 4 is the circuit structure diagram of the power-converting device of the present embodiment 1 to 3.
Fig. 5 (a) is in the data content of the storage part of the frequency converter for representing the present embodiment 1 to 3, volatile memory
The figure of content.
Fig. 5 (b) is in the data content of the storage part of the frequency converter for representing the present embodiment 1 to 3, nonvolatile memory
Content figure.
Fig. 6 is the figure of the main control handling process for representing the present embodiment 1 to 3.
Fig. 7 is the figure of the temperature measuring handling process for representing the present embodiment 1 to 3.
Fig. 8 is that the operating condition for representing the present embodiment 1 to 3 determines the figure of handling process.
Fig. 9 is the figure of the temperature determination processing flow process for representing the present embodiment 1 to 3.
Figure 10 is the figure of the moment setting processing flow process for representing the present embodiment 1 to 3.
Figure 11 is the figure of the minimum command speed setting processing flow process for representing the present embodiment 1 to 3.
Figure 12 is in the data content of the storage part of the control device for representing the present embodiment 3, nonvolatile memory
The figure of content.
Specific embodiment
Below, embodiments of the invention are illustrated referring to the drawings.
The water supply installation of embodiment 1 employs what the motor for carrying out speeds control by using frequency converter was driven
Pump, the frequency converter is installed on a part for the housing of the periphery of the composition armature of above-mentioned motor, and is configured to using being arranged at
Temperature detector in the frequency converter is detecting the temperature of the housing.Also, using the temperature detector detection case temperature, root
The operating condition of motor is judged according to the load current value of motor and the rotating speed of motor, and according to the temperature and electricity of detection
The operating condition of motivation is estimating the moment.Additionally, setting motor speed higher most at the predetermined moment for prestoring
Low value is carrying out the operating of load big ups and downs (water consumption is sharply increased) or relatively low at the predetermined moment for prestoring
The minimum of ground setting motor speed is carrying out the energy-saving operation of period of no using water.That is, during according to case temperature to estimate
Carve, and carry out the Optimal Control at the correspondence moment.
First, to illustrating as the present embodiment premise, motor and frequency converter relation.Fig. 1 is to represent that pump drives
Employ the figure of the outside drawing that motor is integrally formed with frequency converter.In FIG, symbol 1 is represented and covered outside synchronous motor main body
The cover in week, symbol 2 is represented also can be illustrated later, the cooling dome 2 of built-in cooling fan 25, and symbol 3 is represented and is installed on
Cover 1 outer peripheral face, be accommodated with the shell of the frequency converter that will be described hereinafter, symbol 4 represent be built-in with noise filter
Terminal box, symbol 5 represents end-rack (end bracket), and symbol 6 represents the rotary shaft integrally formed with the rotor of motor.
In addition, Fig. 2 represents the expanded view in each portion of motor portion and frequency converter received inside above-mentioned cover 1.In Fig. 2
In, symbol 9 represents the housing of motor, and in a part for its outer surface cooling fins 22 are formed with.In addition, though in figure
Can't see, but the stator and rotor of motor is inserted with inside housing 9, symbol 24 is represented contrary with above-mentioned end-rack 5
Side is installed on the end-rack of the end of housing 9, and symbol 25 to be represented and be installed on the cooling fan of above-mentioned rotary shaft 6 in the outside of end-rack 24.Separately
Outward, frequency converter 7 is installed in the opening portion 21 for arranging via the part in cover 1 in the plane 23 of housing 9, then installs from outside
For protecting the cover 3 of frequency converter 7.
In addition, frequency converter has power switch component as heater element etc., therefore for the heat condition to them
Monitored and protected and be provided with temperature detector.Symbol 26 represents control base board shell, and symbol 27 represents smooth
Capacitor shell.Also, above-mentioned cooling dome 2 is installed in another end (left end of figure) of housing 9.In addition, in figure
Symbol 8 represent the substantially central portion in the wall of the cooling dome 2 be formed as mesh-like, for being taken into the little of extraneous air
Hole.
That is, frequency converter 7 is directly installed on the plane 23 of a part for the housing 9 of motor, frequency converter 7 with by conductivity of heat
The housing that excellent material is constituted is integrally formed thermally conductively such that it is able to by the temperature detector pair inside frequency converter
The temperature of frequency converter and housing carries out one management.
Next, illustrating to the overall structure of the water supply installation of the present embodiment.In figure 3, symbol 10-1,10-2,
10-3 represents pump.It is driven using the motor shown in symbol 20-1,20-2,20-3.Here for convenience and according to volume
Order number from small to large is referred to as No. 1 pump, No. 2 pumps, No. 3 pumps and No. 1 motor, No. 2 motor, No. 3 motor.These pumps
Suction side be connected with water source side via the suction line shown in symbol 11.Water source side by directly link in the way of from it is (not shown) from
Water main pipeline receives water supply, or is to receive water supply from water storage tank (not shown) in water storage tank mode.Symbol 12-1,12-
2nd, 12-3,14-1,14-2,14-3 represent respectively gate valve, and symbol 13-1,13-2,13-3 represent respectively check-valves, the table of symbol 15
Show feed pipe, symbol 17 represents that located at feed pipe 15 pressure at this accordingly produces the pressure sensing cell of electric signal.
Detected value based on the pressure sensing cell come controlling pump discharge pressure (e.g. discharge pressure constant control, estimation end
Pressure constant control).Additionally, as Demand-side, in the case where the front of the end of feed pipe 15 is direct conveying-type, be with
Demand-side feed pipe connects, and supplies water to the water bolt of such as condominium etc..In the case of high-rise water tank type, it is and the Demand-side
Feed pipe connect and to high-rise cistern water supply.Symbol 18 represents the pressure of the pressure oscillation for being used to suppress violent located at feed pipe 15
Power tank.
No. 1 frequency converter, No. 2 frequency converters, No. 3 frequency converters shown in symbol 30-1,30-2,30-3 receives power supply from mains side
Supply, change the frequency of output current by the power-converting device shown in symbol 32-1,32-2,32-3 respectively, so as to
The rotary speed for making motor 20-1,20-2,20-3 changes to be driven.Symbol 31-1,31-2,31-3 are calculation process
Portion, according to the control parameter stored in the storage part shown in symbol 33-1,33-2,33-3, and according to from symbol 34-1,34-
2nd, shown in 34-3 signal processing part input signal come carry out motor 20-1,20-2,20-3 operating/stoppings and revolve
Rotary speed changes.
Symbol 40 is control device, and the operating number of pump is managed by frequency converter 30-1,30-2,30-3.Symbol 41 is
Arithmetic processing section, according to the control parameter stored in the storage part shown in symbol 43, and the signal according to from symbol 44
The signal of processing unit input carrys out the operating number of controlling pump.Control device 40 is utilized respectively symbol with frequency converter 30-1,30-2,30-3
Communication/control line shown in number 50-1,50-2,50-3 is attached, in control device 40 and frequency converter 30-1,30-2,30-3
Between exchange control needed for signal.
Fig. 4 represents the circuit of power-converting device 32-1,32-2, the 32-3 (being denoted as symbol 32 in the diagram) in the present invention
Structure chart.The rectified device 61 of alternating current of input is transformed to direct current.Through converting the smoothed capacitor 62 of direct current for obtaining
After being smoothed, it is supplied to after being transformed to the alternating current of optional frequency in the inverter 63 being made up of power switch component
Electric rotating machine 20 (20-1,20-2,20-3 in Fig. 3).Inverter is driven using drive circuit 67.By temperature detector 66
The temperature information of detection is transfused to control circuit 64, and according to the instruction control drive circuit 67 from control circuit 64 scanning frequency is entered
The increase and decrease of degree.Various settings can be carried out by the operation display part 65 being connected with control circuit 64.
In addition, smoothing capacity device 62 is contained in capacitor shell 27, control circuit 64 is accommodated in outside control base board
In shell 26, the position away from power converter shell 3 is constructively configured at.
Store in the storage part that Fig. 5 represents in the control base board of the frequency converter, content of volatile memory and Fei Yi
The content of the property lost memory.Instead storage device is installed outside alternatively, it is also possible to no storage part in control base board.
It is content that the volatile memory in storage part is stored in Fig. 5 (a).On 1001 ground of volatile memory
Location stores current pump and discharges lateral pressure DpN.1002 addresses store frequency converter currently to motor instruction speed (just defeated
The operating frequency for going out) HzN, store the output current value (load current value of motor) of current frequency converter in 1003 addresses
AmN.Can be by the load condition of HzN and AmN estimation frequency converters and the water yield of pump output, according to being estimated by DpN, HzN and AmN
The water yield of calculation, can hold the operation point (discharging lateral pressure, water consumption) of pump.To be examined by temperature detecting unit in 1004 addresses
The value for going out is stored as current temperature detection value TeN.Store by minimum command speed setting processing described later in 1005 addresses
Minimum command speed (low-limit frequency) HLN set, current.
The remaining time TN1 of cycle management timer is determined in 1006 address storage temperatures.The storage in 1007 addresses operates
The remaining time TN2 of state estimating cycle management timer.The storage in 1008 addresses is carried out by moment setting processing described later
Setting, current moment (elapsed time from morning 0) TiN.In the storage of 1009 addresses from started temperature is determined
Elapsed time TeS.
The temperature of motor and frequency converter does not change because of the load of the moment of detection temperature, but based on so far
Load condition accumulative and change.Therefore, store in 1101 addresses and determine what the cycle was measured according to operating condition
The aggregate-value HzS of command speed, the value that storage obtains aggregate-value HzS divided by equalization number of times AvC described later in 1102 addresses
(mean value) HzA.For current value similarly, 1201 addresses store according to operating condition determine the cycle be measured it is defeated
Go out the aggregate-value AmS of current value, store that aggregate-value AmS is (average divided by the value that equalization number of times AvC is obtained in 1202 addresses
Value) AmA.
Judgement symbol TeF is stored in 1301 addresses, it is used to performing temperature described later when the temperature measuring cycle is reached sentences
It is fixed to process.TeF does not perform temperature determination processing when being 0, temperature determination processing is performed when TeF is 1.
It is content that the nonvolatile memory in storage part is stored in Fig. 5 (b).In nonvolatile memory
Target when the 2001 addresses storage water yield is zero discharges lateral pressure DpL, and the target stored under standard quantity of water in 2002 addresses is discharged
Lateral pressure DpH.(the estimation end in the case where being estimated in the constant mode of the pressure of Demand-side end and being carried out water supply control
In the case of end pressure constant control) because DpL is to deduct to be obtained with the pressure of pipe arrangement resistance corresponding amount from user's specification pressure
The value for arriving, so DpL ＜ DpH.Constant carry out supplying water control in the discharge lateral pressure for not considering Demand-side end and make water supply installation
DpL=DpH (in the case of discharge pressure constant control) in the case of system.
The command speed (minimum speed) when the water yield is zero is stored in 2011 addresses to 2013 addresses.The moment is held, at night
Between be suppressed to relatively low command speed for obtain energy-conservation effect, otherwise in demand increase and the water yield fluctuate the violent morning and evening when
Duan Ze suppresses the reduction of pressure by setting command speed higher, therefore when the water yield that 2011 addresses store night is zero
Command speed HzL, store command speed HzD when the common water yield is zero in 2012 addresses, in 2013 addresses, storage is sooner or later
Command speed HzM when the water yield of period is zero.The command speed (highest frequency) under standard quantity of water is stored in 2014 addresses
HzH。
Cooling capacity (cooling capacity of the cooling fan) CoK of motor is stored in 2021 addresses.The rotating speed of cooling fan
Also can accordingly change with the rotating speed (command speed of frequency converter) of motor, can be enough normal in certain range of speeds
Amount of cooling water approximate representation is following formula 1 by number k1.
HzA × CoK × k1 formulas 1
Or can also be whole using using high-order approximation in the range of speeds.
Temperature-rise coefficient (relative to the temperature rise of the load current) WaK of motor is stored in 2022 addresses.Electricity
The temperature of motivation and frequency converter rises can change because of output current value (load current value), can use constant k2 by temperature
Ascending amount approximate representation is following formula 2.
AmA × WaK × k2 formulas 2
High-order approximation can also more accurately be used.
The setting time (cycle being measured to temperature) of cycle management timer is determined in 2031 address storage temperatures
TM1.Setting time (the week being measured to operating condition that operating condition determines cycle management timer is stored in 2032 addresses
Phase) TM2.In 2033 addresses, storage is determined from started temperature and played to setting time TeT till judging constantly.
The number of times AvC that storage is averaged to command speed, output current value in 2101 addresses.Between the measure of temperature
In the case of TM1 is sufficiently long, equalization number of times AvC can be set as during once being determined to temperature, and to referring to
The number of times for making speed and output current value be measured is identical.In the case where the measuring interval TM1 of temperature is shorter, equalization time
Number AvC can be set as during temperature is once determined, being measured command speed and output current value
It is more than number of times.From from the viewpoint of being easily controlled, preferably：Equalization number of times AvC is set as carrying out once temperature
It is identical with the number of times being measured to command speed and output current value during measure, reach equalization time when number of times is determined
Mean value HzA, AmA of then storage temperature detected value TeN, command speed and output current during number AvC, to command speed and output
Aggregate-value HzS, AmS of current value is reset.
When 3011 addresses are stored in the temperature detection of the 1st time (moment 1) sentenced by temperature determination processing described later
Fixed judgement temperature (environment temperature) T01T, stores command speed T01H at moment 1, when 3013 addresses store in 3012 addresses
Carve 1 output current value T01A.In the present embodiment temperature measuring cycle T M1 is set to into 60 (60 minutes=1 hours), in order to enter
Temperature detection (4320 minutes=72 hours=3 days) that row is 72 times and store sentencing for each moment in the address to 3723 addresses
Constant temperature degree, command speed, output current value.Especially because in outdoor setting temperature can be caused significantly because of weather (sunshine)
Change, therefore be not inferred the moment exactly by weather or so ground to be determined carrying out 72 times.Therefore, although wish minute
(cycle × number of times) is longer, but is preferably 3 days or so if the time till setting in view of the first moment.First
Moment also stores periodically judgement temperature, command speed, the output current value at each moment after judging, implements the moment and judges, will be with
The previous mean value for judging the moment is set to the new judgement moment such that it is able to more accurately hold the moment.But, entering
Then need to carry out the measure of 10080 minutes (=168 hours=7 days) in the case of term several judgement.
The start time PT1S of the time period (such as morning) of the load increase of the 1st time is stored in 4001 addresses, 4002
Address stores the finish time PT1E of the time period of the load increase of the 1st time.What the load for storing the 2nd time in 4003 addresses increased
The start time PT2S of time period (for example at dusk), at the end of the time period of load increase that 4004 addresses store the 2nd time
Carve PT2E.Conversely, the start time ST1S of the time period (such as night) of the load reduction of the 1st time is stored in 4101 addresses,
4102 addresses store the finish time ST1E of the time period that the load of the 1st time reduces.The load for storing the 2nd time in 4103 addresses subtracts
The start time ST2S of little time period (such as after high noon), the time period that the load for storing the 2nd time in 4104 addresses reduces
Finish time ST2E.In the case where time period setting corresponding with the increase or reduction of load is carried out exactly, preferably set
For need design temperature determine the cycle time span less than half, but because environment temperature will not tempestuously change, supply
Water demand also can change according to the length within the time period, therefore the temperature measuring cycle is 30 minutes to a 60 minutes left sides
The right cycle is enough.
The mark TJu for representing that the moment judges to complete is stored in 5001 addresses.Minimum command speed setting processing described later exists
Confirm that TJu is performed afterwards for 1 (moment judgement is completed).
Fig. 6 is the main control process chart of the present embodiment.Carry out in step 100 first at the initialization of various functions
Reason, and following steps 200 are performed repeatedly to each control of step 800.It is controlled in step 200 between device and frequency converter
Control on Communication process.Control on Communication process is entered using the communication/control line in figure 3 by shown in symbol 50-1,50-2,50-3
The exchange of row signal.
Temperature measuring process is carried out in step 300, is sentenced with then performing temperature when the cycle for carrying out temperature measuring is reached
The fixed mode for processing is processed.Operating condition measure process is carried out in step 400, and operating condition is measured when reaching
Cycle when, then carry out the process of store instruction speed and output current value.Enter trip temperature determination processing, root in step 500
Judgement temperature (environment temperature) is calculated according to temperature detection value, command speed, output current value and is stored.
Moment setting processing is carried out in step 600, according to the pass of multiple temperature result of determination (multiple judgement temperature)
Connection property is estimating the moment and be set.The increase or reduction at moment and the load for prestoring in step 700 to setting
Moment be compared, load from it is usual when time period for changing carry out changing the process of minimum command speed.
Pump control process are carried out in step 800.In occasions such as house water supply, mainly it is carried out estimating that terminal pressure is constant
Control and discharge pressure constant control, be all the change of the rotary speed by being realized by frequency converter in both control modes
Carry out controlling pump and discharge lateral pressure to reach pressure needed for user.In the water supply installation with multiple stage pump, when with a pump deficiency
Demand is met with parallel running to supply the operating for then starting second pump during the amount of water required.
Fig. 7 is the process chart that temperature measuring is processed.Temperature measuring cycle management timer is carried out in the step 310
Whether remaining time TN1 is 0 judgement, and if TN1 is 0 step 311 is entered.Temperature detector is detected in step 311
Temperature be stored as current temperature detection value TeN, in step 312 the execution mark TeF of temperature determination processing is set as into 1
(execution).In step 313, to the remaining time TN1 of temperature measuring cycle management timer, design temperature determines cycle management
Timer setting value TM1, returns main control flow process.It is in step 313 in order to after the time of cycle T M1 to TN1 setting TM1
Temperature measuring is carried out again.
In the step 310, in the case that the remaining time TN1 of temperature measuring cycle management timer is not 0, in step
In 314, the remaining time TN1 of temperature measuring cycle management timer is carried out by countdown and stored.Thereafter, master control is returned
Flow process processed.
Fig. 8 is that operating condition determines the process chart for processing.Operating condition is carried out in step 410 determines cycle management
Whether the remaining time TN2 of timer is 0 judgement, and if TN2 is 0 step 411 is entered.Frequency conversion is stored in step 411
Speed (the command speed, output frequency) HzN that device is currently indicated motor, adds to command speed by HzN in step 412
Aggregate-value HzS is updating HzS.Frequency converter is stored in step 413 when the front current value (load current value) to motor output
AmN, AmN is added in step 414 the aggregate-value AmS of output current value to update AmS.In step 415, to operating condition
The remaining time TN2 of cycle management timer is determined, setting operating condition determines cycle timer setting value TM2, returns master control
Flow process processed.It is in step 415 to carry out again at operating condition measure after the time of cycle T M2 to TN2 setting TM2
Reason.
In step 410, in the case that the remaining time TN2 of operating condition measure cycle management timer is not 0, in step
In rapid 416, the remaining time TN2 that operating condition determines cycle management timer is carried out by countdown and stored.Thereafter, master is returned
Control flow.
Fig. 9 is the process chart of temperature determination processing.Enter the execution mark of trip temperature determination processing in step 510
Whether TeF is the judgement of 1 (execution), and if TeF is 1 (executions) step 511 is entered, TeF for 0 (not performing) when then return
Main control flow process.According to the aggregate-value HzS of command speed and equalization number of times AvC come computations speed in step 511
Mean value HzA.
HzA=HzS ÷ AvC formulas 3
In step 512 according to the mean value HzA and cooling ratio CoK of command speed calculating amount of cooling water (formula 1).In step
The mean value AmA of output current value is calculated in rapid 513 according to the aggregate-value AmS and equalization number of times AvC of output current value.
AmA=AmS ÷ AvC formulas 4
In the step 514 according to the mean value AmA and temperature-rise coefficient WaK of output current calculating temperature rise
(formula 2).The aggregate-value HzS for making command speed in step 515 reverts to 0, and the aggregate-value of output current value is made in 516 steps
AmS reverts to 0.The amount of cooling water that obtains according to current temperature detection value TeN and by formula 1, formula 2 in step 517, temperature rise
Measure to calculate judgement temperature, if judging judgement temperature T01T for being then stored as the moment 1 for the 1st time, if n-th judges then
It is stored as judgement temperature TnT of moment n.
(judgement temperature)=TeN- (temperature rise)+(amount of cooling water) formula 5
The execution mark TeF of temperature determination processing is set as into 0 (not performing) in 518 steps, main control flow process is returned.
Figure 10 is the process chart of moment setting processing.Whether judge temperature measuring elapsed time TeS in step 610
Temperature measuring time TeT is reached, step 611 is then entered when reaching, main control flow process is then returned when not yet reaching.In step 611
It is middle that the data for judging the peak in temperature are set to into the moment " (through 900 minutes from morning 0) when afternoon 3 ".In step
Calculate when afternoon 0 according to time of " when afternoon 3 " is set to the difference of current temperature measuring elapsed time TeS in 612.Example
Such as detected in the measure of the 30th time (through 1800 minutes) with 60 minutes cycles of measure and be set to " (through 900 points when afternoon 3
Clock) " data in the case of, then according to before " during morning 0 " be " when afternoon 3 " 900 minutes, i.e.,
1800-900=900 formulas 6
Understand it is the time point from temperature measuring starts through 900 minutes,
Or after be " when afternoon 3 " 540 minutes next day " during morning 0 ", i.e.,
1800+540=2340 formulas 7
Understand it is the time point from temperature measuring starts through 2340 minutes.It is set to " during morning 0 " (fiducial time).
Measure elapsed time TeS till can starting to play currently according to " during morning 0 " and from measure in step 613
(if the measure of 72 times then be 60 minutes × 72 times=4320 minutes) is calculating current moment TiN.
4320-2340=1980 formulas 8
Due to one day be 1440 minutes (24 hours), therefore formula 8 solution be more than 1440 when, then deduct 1440.
1980-1440=540 formulas 9
When therefore, it is possible to calculate being currently morning 9 after 540 minutes (through 9 hours).
To constantly judge that complement mark TJu is set as 1 (completing) in step 614.Temperature measuring Jing is made in step 615
The time TeS of mistake reverts to 0, returns main control flow process.
Although by the extraction method of " when afternoon 3 " in step 612 be set to highest judge temperature, can also by with
1440 minutes (=24 hours) are that the mean value of three data at interval is set to highest, or can also be by minimum judgement temperature
It is set to " during morning 6 ".Or can also be sentenced in the change point (reduce, rise from reducing from rising) of temperature
It is fixed.
Figure 11 is the process chart of minimum command speed setting processing.Judged in step 720 to complete mark constantly
Whether will TJu is the judgement of 1 (completing), and if TJu is 1 (completing) step 720 is entered, when TJu is 0 (unfinished) if enter
Step 763.
Carry out in step 720 current moment TiN whether the time period setting as load increase PT1S and
The judgement of the time period between PT1E, step 761 is then entered when TiN is between PT1S and PT1E, if not in PT1S and
Time period between PT1E then enters step 730.In step 730, similarly, whether current moment TiN is carried out in conduct
The judgement of the time period between the PT2S and PT2E of the time period setting of load increase, when TiN is between PT2S and PT2E then
Into step 761, step 740 is entered if the time period not between PT2S and PT2E.
In step 740, carry out current moment TiN whether the time period setting reduced as load ST1S and
The judgement of the time period between ST1E, step 762 is then entered when TiN is between ST1S and ST1E, if not in ST1S and
Time period between ST1E then enters step 750.In step 750, similarly, whether current moment TiN is carried out in conduct
The judgement of the time period between the ST2S and ST2E of the time period setting that load reduces, when TiN is between ST2S and ST2E then
Into step 762, step 763 is entered if the time period not between ST2S and ST2E.
In the case of into step 761, when setting the water yield of period morning and evening as zero to current minimum command speed HLN
Command speed (low-limit frequency of period morning and evening) HzM, return main control flow process.In the case of into step 762, to current
Command speed (low-limit frequency at night) HzL of minimum command speed HLN when setting the water yield at night as zero, return main control
Flow process.Instruction in the case of into step 763, when setting the common water yield as zero to current minimum command speed HLN
Speed (common low-limit frequency) HzD, returns main control flow process.
An alternative embodiment of the invention is illustrated.
In example 2, although be to obtain the moment in the same manner as in Example 1, but not to 4001 addresses extremely
4104 addresses pre-enter the time period of the increase/reduction of load, and be based on that 3011 addresses to 3723 addresses store it is each
The output current value at moment come judge load increase/reduction, and automatically to 4001 addresses to 4104 addresses store load
The time period of increase/reduction.
The method according to the invention, it is not necessary to be predicted the time period of the simultaneously increase/reduction of input load to load in advance,
It is furthermore possible to be automatically inputted the time period based on actual load data, the change therefore, it is possible to more accurately hold load comes
Set.Additionally, in the case where being set constantly periodically, by updating (again when being set constantly every time
Setting) load increase/reductions time period such that it is able to be all the time reference being controlled with nearest load condition.
With regard to a reference value during increase/reduction that load is judged according to the output current value at each moment, although can be pre-
First set in volatile memory, it is preferred that the mean value or middle position based on the output current value at each moment for being stored
Number etc. obtains a reference value by computing.
Additionally, in embodiment 1, the method for embodiment 2, when with a pump deficiency in the water supply installation with multiple stage pump
During with the water yield of demand and supply, then start the operating of second pump and demand is met with parallel running, but be that typically in beginning simultaneously
Through transport arranges acknowledging time before turning.In order to prevent causing the situation of reduced pressure in the time of load increase, can be by this simultaneously
Acknowledging time before connection operation start is set to the acknowledging time shorter than generally.
Another embodiment of the present invention is illustrated.
Embodiment 3 is that the moment is judged in control device, and by communication/control line to each frequency converter delivery time
The setting value of setting value and minimum command speed.
Content store in the storage part that Figure 12 represents in the control base board of control device, nonvolatile memory.
Instead storage device is installed outside alternatively, it is also possible to no storage part in control base board.
The memory content of 2001 addresses of volatile memory to 2101 addresses and 4001 addresses to 5001 addresses with
The content stored in frequency converter is same.
3014 addresses store No. 1 frequency converter when the temperature detection of the 1st time is carried out (moment 1) judge temperature (around
Temperature) T011, temperature (environment temperature) T012 that No. 2 frequency converters judge at the moment 1 is stored in 3105 addresses, deposit in 3106 addresses
Temperature (environment temperature) T013 that No. 3 frequency converters of storage judge at the moment 1.Temperature measuring cycle T M1 is set in the present embodiment
60 (60 minutes=1 hours), in order to carry out the temperature detection (4320 minutes=72 hours=3 days) of 72 times and to 3726 addresses
Till address store each moment each frequency converter judgement temperature.Control base board is sentenced according to the mean value of these judgement temperature
The disconnected moment, and set the minimum command speed at correspondence moment.
By judging the moment in control device such that it is able to by whole frequency converters according to unified moment and
The minimum command speed at correspondence moment is being operated.And then can more accurately be sentenced by increasing the temperature data of detection
The disconnected moment.
Claims (12)
1. a kind of water supply installation, it has：
Pump；
Drive the motor of said pump；
It is respectively arranged in the cooling unit of above-mentioned motor；
Frequency converter, its rotating speed to above-mentioned motor is controlled；And
Temperature detector, it is installed on the housing for constituting armature periphery of above-mentioned motor,
Above-mentioned water supply installation is characterised by,
Above-mentioned frequency converter detects the temperature of the case temperature of above-mentioned motor or above-mentioned frequency converter using said temperature detector,
The temperature of surrounding is calculated according to the operating condition of the temperature for being detected and above-mentioned motor, and based on the temperature for being calculated
Change to estimate the moment.
2. water supply installation according to claim 1, it is characterised in that
The operating shape of above-mentioned motor is judged according to the load current value of above-mentioned motor and the rotating speed of above-mentioned motor
State.
3. water supply installation according to claim 2, it is characterised in that
Above-mentioned frequency converter obtains temperature rise based on above-mentioned load current value, and based on above-mentioned rotating speed amount of cooling water is obtained, relative to
The temperature detected by said temperature detector, deducts said temperature ascending amount, adds above-mentioned amount of cooling water, so as to calculate surrounding
Temperature.
4. water supply installation according to claim 1, it is characterised in that
Above-mentioned frequency converter is set as the minimum of the rotating speed of motor at the predetermined moment for prestoring higher.
5. water supply installation according to claim 1, it is characterised in that
Above-mentioned frequency converter is set as the minimum of the rotating speed of motor at the predetermined moment for prestoring relatively low.
6. water supply installation according to claim 1, it is characterised in that
Said pump, above-mentioned motor and above-mentioned frequency converter be provided with it is multiple,
Possess the control device being controlled to multiple above-mentioned frequency converters,
Above-mentioned control device shortens when changing the operating number of said pump relative to the water yield at the predetermined moment for prestoring
Acknowledging time.
7. water supply installation according to claim 1, it is characterised in that
Above-mentioned frequency converter storage the estimated moment associates with the operating condition of above-mentioned motor.
8. water supply installation according to claim 7, it is characterised in that
Above-mentioned frequency converter may be changed into the time period of higher state in the load of above-mentioned motor, by the rotating speed of above-mentioned motor
Minimum is set as higher.
9. water supply installation according to claim 7, it is characterised in that
Above-mentioned frequency converter sets the minimum of the rotating speed of motor in the relatively low state duration of the load of motor
For relatively low.
10. water supply installation according to claim 7, it is characterised in that
Said pump, above-mentioned motor and above-mentioned frequency converter be provided with it is multiple,
Possess the control device being controlled to multiple above-mentioned frequency converters,
Above-mentioned control device may be changed into the time period of higher state in the load of motor, shorten above-mentioned relative to water yield change
The acknowledging time during operating number of pump.
11. a kind of water supply installation, it has：
Multiple pumps；
Multiple motor of rotation driving are carried out respectively to above-mentioned multiple pumps；
It is respectively arranged in multiple cooling fans of above-mentioned multiple motor；
The multiple frequency converters for making the rotating speed of above-mentioned multiple motor change respectively；And
The control device of above-mentioned multiple frequency converters is controlled,
Above-mentioned water supply installation is characterised by,
Above-mentioned multiple frequency converters are installed on a part for the respective housing for constituting armature periphery of above-mentioned multiple motor, and constitute
It is to detect the temperature of the housing by being arranged at the temperature detector in the frequency converter,
Above-mentioned control device detects the case temperature of above-mentioned multiple motor or above-mentioned multiple changes using said temperature detector
The temperature of frequency device, and according to the operating condition of the temperature and motor for being detected estimating the moment.
12. water supply installations according to claim 11, it is characterised in that
Above-mentioned control device, based on deducting based on above-mentioned motor relative to the temperature detected by said temperature detector
Load current value temperature rise, and plus rotating speed based on above-mentioned motor amount of cooling water and the environment temperature that calculates
At the moment for changing to estimate, control the operating and stopping of above-mentioned multiple frequency converters.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2014/072355 WO2016030975A1 (en) | 2014-08-27 | 2014-08-27 | Water supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106574624A true CN106574624A (en) | 2017-04-19 |
| CN106574624B CN106574624B (en) | 2018-05-04 |
Family
ID=55398917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480080998.9A Expired - Fee Related CN106574624B (en) | 2014-08-27 | 2014-08-27 | Water supply installation |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6268299B2 (en) |
| CN (1) | CN106574624B (en) |
| WO (1) | WO2016030975A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6899642B2 (en) * | 2016-10-07 | 2021-07-07 | 株式会社荏原製作所 | Water supply device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050594A (en) * | 1989-09-29 | 1991-04-10 | 株式会社金星社 | The running control circuit of pump motor |
| JP2000329072A (en) * | 1999-05-19 | 2000-11-28 | Sayama Seisakusho:Kk | Water supplying method |
| CN102748303A (en) * | 2011-04-20 | 2012-10-24 | 株式会社日立产机系统 | Water supply device |
| JP2012229699A (en) * | 2010-11-08 | 2012-11-22 | Ebara Corp | Method for starting water supply system and water supply system |
| CN103089596A (en) * | 2011-11-01 | 2013-05-08 | 株式会社日立制作所 | Pump control system |
| CN103941643A (en) * | 2013-01-21 | 2014-07-23 | 发那科株式会社 | Control Device For Machine Tool With Time Estimation Unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08193592A (en) * | 1995-01-13 | 1996-07-30 | Toshiba Corp | Pressure control device of water distribution pump |
-
2014
- 2014-08-27 JP JP2016545130A patent/JP6268299B2/en active Active
- 2014-08-27 CN CN201480080998.9A patent/CN106574624B/en not_active Expired - Fee Related
- 2014-08-27 WO PCT/JP2014/072355 patent/WO2016030975A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050594A (en) * | 1989-09-29 | 1991-04-10 | 株式会社金星社 | The running control circuit of pump motor |
| JP2000329072A (en) * | 1999-05-19 | 2000-11-28 | Sayama Seisakusho:Kk | Water supplying method |
| JP2012229699A (en) * | 2010-11-08 | 2012-11-22 | Ebara Corp | Method for starting water supply system and water supply system |
| CN102748303A (en) * | 2011-04-20 | 2012-10-24 | 株式会社日立产机系统 | Water supply device |
| CN103089596A (en) * | 2011-11-01 | 2013-05-08 | 株式会社日立制作所 | Pump control system |
| CN103941643A (en) * | 2013-01-21 | 2014-07-23 | 发那科株式会社 | Control Device For Machine Tool With Time Estimation Unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106574624B (en) | 2018-05-04 |
| JP6268299B2 (en) | 2018-01-24 |
| WO2016030975A1 (en) | 2016-03-03 |
| JPWO2016030975A1 (en) | 2017-04-27 |
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