JPH109148A - Water supply pressurizing pump system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water supply pressurizing system which can supply water with specified pressure even in the case that piping loss is not clear or varied. SOLUTION: A water supply pressurizing pump system has a pump 100 for supplying water to a faucet 106 through a piping, a pump motor 101 for driving the pump 100, a pump controller 103 for controlling the pump motor 101 based on a preset controlling system and a pressure sensor 108 arranged on the faucet 106A and having a signal transmitter 107. The pump controller 103 has a signal receiver 109 for receiving pressure data of the faucet 106A transmitted by the signal transmitter 107. The pump motor 101 is controlled based on the received pressure data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump, and more particularly to a water supply pressurizing pump system for supplying water to a water supply part at a constant pressure.

[0002]

2. Description of the Related Art In a water supply pressurizing pump system for supplying water to a water supply part at a constant pressure, an inverter power supply is controlled by a pump controller based on a predetermined control method such as a constant control of an estimated terminal pressure and a constant discharge pressure. Variable speed control is performed on the pump motor using

[0003] The pump controller increases or decreases the control frequency of the inverter power supply based on the pressure value detected by the pressure sensor installed on the discharge side of the pump and the pump motor rotation frequency estimated from the control frequency of the inverter power supply. Thus, the pump is controlled at a variable speed.

[0004]

When the pipe loss equation of the building is known, the function of controlling the constant estimated end pressure of the pump can be operated. However, when the pipe loss is unknown in the existing building, If the pressure loss equation changes due to aging of the piping, there has been a problem that the function of controlling the constant estimated end pressure of the pump cannot be operated.

Therefore, an object of the present invention is to supply water to a water-supplied section at a predetermined pressure based on a predetermined control method even when the pipe loss is unknown or even when the pipe loss is changing. And a feed water pressurizing pump system.

Another object of the invention of the present application is that when the pipe loss is unknown, even when the pipe loss is changed,
It is an object of the present invention to provide a feed water pressurizing pump system capable of performing constant control of an estimated end pressure and supplying water to a water supply portion at a predetermined pressure.

Still another object of the invention of the present application is to perform a constant estimated end pressure control based on an automatically generated pressure loss equation even if the pipe loss is unknown or the pipe loss is changing. It is an object of the present invention to provide a feed water pressurizing pump system that can perform the feed operation and can supply water to a supply target part at a predetermined pressure.

[0008] An additional object of the present invention is to control the motor by performing the estimated terminal pressure constant control even when the pipe loss is unknown or even when the pipe loss is changing. It is an object of the present invention to provide a feed water pressurizing pump system that can feed water to a feed part with a predetermined pressure.

[0009]

A first aspect of the present invention provides a pump for supplying water to a water-supplied portion through a pipe,
A water supply pressurization pump system comprising: a pump drive unit for driving the pump; and a pump control unit for controlling the pump drive unit based on a predetermined control method, wherein the water supply pressurization system Includes a pressure detection means provided in the water supply section, including a signal transmission means,
The pump control means includes a receiving means for receiving the pressure data of the water supply part transmitted by the signal transmitting means, and controls the pump driving means based on the pressure data.

A second aspect of the present invention is the first aspect of the present invention, wherein the control method is a constant estimated end pressure control.

The invention according to a third aspect is the invention according to the second aspect, wherein the pump control means supplies water to the water supply part through a pipe based on the pressure data of the water supply part. It is characterized by further including an automatic generation means for automatically generating the pressure loss equation at the time.

The invention described in claim 4 is the invention described in claim 3, wherein the pump driving means is a motor.

According to the first aspect of the present invention, the water is supplied to the water supply portion through the pipe by the function of the pump.
The pump is driven by the function of the pump driving means. By the operation of the pump control means, the pump drive means is controlled based on a predetermined control method. The pressure data of the water supply part is detected and transmitted by the function of the pressure detection means provided in the water supply part. By the function of the pump control means,
The pressure data of the water supply part transmitted by the signal transmitting means is received, and the pump driving means is controlled based on the pressure data. Therefore, the pressure loss value is corrected based on the pressure data of the water supply part, and water can be supplied to the water supply part at a predetermined pressure.

According to the invention described in claim 2, according to claim 1,
In addition to the operation of the invention described in (1), the pump driving means is controlled by the estimated terminal pressure constant control method. Therefore, the pressure loss value in the estimated terminal pressure constant control method is corrected based on the pressure data of the water supply section, and water can be supplied to the water supply section at a predetermined pressure.

According to the invention described in claim 3, according to claim 2
In addition to the operation of the invention described in (1), the function of the pump control means automatically generates a pressure loss formula when water is supplied to the water supply part through the pipe based on the pressure data of the water supply part. Therefore, the pressure loss value is corrected by the pressure loss formula automatically generated based on the pressure data of the water supply section, and water can be supplied to the water supply section at a predetermined pressure.

According to the invention set forth in claim 4, according to claim 3,
In addition to the operation of the invention described in (1), the pump is driven by the motor. Therefore, the control of the motor is corrected based on the pressure data of the water supply section, and water can be supplied to the water supply section at a predetermined pressure.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a system configuration diagram of a feedwater pressurizing pump system according to an embodiment of the present invention.

Referring to FIG. 1, a feed water pressurizing pump system includes a pump 1 for feeding water at a predetermined pressure through piping.
00 and a pump motor 1 for driving the pump 100
01, an inverter power supply 102 for driving the pump motor 101, a first pressure sensor 104 provided on the inflow side of the pump 100 for detecting the inflow pressure to the pump 100, and a first pressure sensor 104 on the discharge side of the pump 100. A second pressure sensor 105 for detecting a discharge pressure from the pump 100, a first pressure sensor 104, a second pressure sensor 105, and an inverter power supply 102,
Inverter power supply 10 based on a predetermined control method
2, a pump controller 103 for controlling the pump motor 101, a plurality of faucets 106 connected to the pump 100 via piping, and a pressure sensor 1 with a transmission function provided at a faucet 106A at the lowest water pressure position to be described later.
08.

The pressure sensor with transmission function 108 is
A signal transmitting unit 107 for transmitting the pressure data of 6A is included. The pump controller 103 includes a signal transmission unit 107
And a signal receiving unit 109 for receiving the pressure data of the faucet 106A transmitted by the CPU.

Next, the operation of the feed water pressurizing pump system according to the embodiment will be described based on an estimated terminal pressure constant control method.
This will be described with reference to FIGS.

First, this estimated terminal pressure constant control is shown in FIGS.
4, the operation of the constant estimated end pressure control will be described with reference to FIG. 5. Finally, the processing procedure of the constant estimated end pressure control will be described with reference to FIGS. This will be described with reference to a flowchart.

Here, the constant control of the estimated terminal pressure means that the water pressure of the pipe in the building is the lowest, that is, generally the highest position, and the water pressure that comes out when the water tap is twisted at the highest position. This means a method of controlling so as to be always constant.

First, look at the load side. FIG. 2 is an explanatory diagram of an estimated terminal pressure constant control method of the feedwater pressurizing pump system. Referring to FIG. 2, when water is supplied by a constant estimated end pressure control method using a pump in a building, the water pressure (pressure) to be added to the water by the pump is P1 + P2 + P3 as shown in FIG. Can be represented.

Here, P1: water pressure for pumping water to a height H (positional water pressure) P2: water pressure required at a height of H (practical water pressure) P3: water pressure for compensating for loss due to piping (loss water pressure) Is represented.

P1 + P2 is constant regardless of the flow rate Q, and can be expressed using a constant P. P3 is proportional to the square of the flow rate Q, by using the proportionality constant K, it can be represented by P3 = KQ ^2.

FIG. 3 is a graph showing characteristics on the load side of the constant estimated end pressure control system of the feed water pressurizing pump system. This graph illustrates the relationship between the flow rate Q and the pressure that the pump should apply to the water. When this relationship is expressed by an equation, the water pressure P * that the pump should add to the water at the flow rate Q is: P * = P1 + P2 + P3 = (P1 + P2) + P3 = P +
The KQ ^2.

The proportional constant K in the above equation is a value determined by calculation or the like if the equipment used for the building piping, the material of the piping, the piping system and the piping length are known.

Next, look at the supply side. FIG. 4 is a graph showing characteristics on the supply side of the constant estimated end pressure control method of the feed water pressurizing pump system. Referring to FIGS. 4 and 1, this graph shows that pump motor 101 is connected to inverter power supply 10.
2 shows the characteristics when driving was performed. Here, the motor rotation frequency is N, the flow rate of the pump is Q, and the pressure applied to the water by the pump is PO. In addition,
At this time, the inverter power supply is V / f constant control PWM (Pu
lse Width Modulation) Inverter is used.

FIG. 5 is a graph showing the operation of the feed water pressurizing pump system according to the constant estimated end pressure control method. FIG. 6 and FIG. 7 are flowcharts showing a processing procedure of the control processing by the estimated terminal pressure constant control method of the feed water pressurizing pump system.

Referring to FIG. 5, when performing the estimated terminal pressure constant control, it is sufficient to control so that the water pressure applied to the water by the pump always moves on a curve (load curve) represented by P *. . In other words, an operation that deviates from the load curve may be regarded as abnormal, and control may be performed to return the operation to the load curve.

Hereinafter, the control operation of the estimated terminal pressure constant control will be specifically described. Referring to FIG. 5, it is assumed that the operation is initially performed at Y2 on the load curve. Here, when the used water amount Q in the building increases from QY to QZ, the pump discharge water pressure PO decreases when the motor rotation frequency remains N = 50 [Hz], and the operating point deviates from the load curve, It moves from Y2 to Y3. Then, the estimated pressure P at the end
2 is smaller than the required practical water pressure.

When the pump controller 103 detects the deviation from Y2 based on the value of the pressure sensor 105 installed on the discharge side and the motor rotation frequency of the pump motor 101 estimated from the control frequency of the inverter power supply 102, the pump controller 103 Until the operating point returns on the load curve, that is, the motor rotation frequency becomes N
= 60 [Hz]. At this time, the operating point moves from Y3 to Z2, and the estimated pressure P2
Is the required practical water pressure.

On the other hand, the amount of water used Q in the building changes from QY to Q
When the frequency decreases to X, the inverter power output frequency becomes N = 50.
When [Hz] remains, the pump discharge water pressure PO increases, the operating point deviates from the load curve, and moves from Y2 to Y1. Then, the estimated pressure P2 at the end becomes larger than the required practical water pressure.

When the pump controller 103 detects the deviation from Y2 based on the value of the pressure sensor 105 installed on the discharge side and the motor rotation frequency estimated from the control frequency of the inverter power supply 102, the pump controller 103 decreases the control frequency of the inverter power supply 102. Until the operating point moves on the load curve, that is, until the motor rotation frequency becomes N = 40 [Hz]. At this time, the operating point moves from Y1 to X2, and the estimated pressure P2 at the end reaches the required practical water pressure.

In this case, when the motor rotation frequency is 40
[Hz], the flow rate does not become small, but when the amount of water used decreases and the operating point moves to the point of Qm and the motor rotation frequency becomes less than N = 30 [Hz], a small flow rate is detected and Flow operation is started.

Next, a description will be given of a procedure of a control process according to the constant estimated end pressure control method. Referring to FIGS. 6, 7, 5, and 1, first, pressure P * on the load curve is corrected (S600). The correction of the pressure P * will be described later. Next, the pressure PO that the pump 100 is applying to the water is:
It is determined whether the pressure is smaller than the pressure P * on the load curve (S601). If it is determined that PO is smaller than P *, the operating point shifts from Y2 to Y3, and the estimated pressure P2 at the end is smaller than the practical water pressure (S60).
2). When the pump controller 103 detects the deviation from Y2 based on the value of the pressure sensor 105 and the motor rotation frequency estimated from the control frequency of the inverter power supply 102, the pump controller 103 increases the control frequency of the inverter power supply 102 to reduce the motor rotation frequency. It is increased (S603).

Next, it is determined whether or not PO has become equal to P * (S604). If it is determined that PO is not equal to P *, the process of increasing the motor rotation frequency is continued (S603).

On the other hand, if it is determined that PO has become equal to P *, the operating point returns from Y3 to Z2 on the load curve, and the estimated pressure P2 at the end becomes the required practical water pressure (S605). Then, the estimated terminal pressure constant control process ends.

On the other hand, if it is determined that PO is not smaller than P *, it is determined whether or not PO is equal to P * (S606). When it is determined that PO is equal to P *, the estimated terminal pressure constant control process ends.

On the other hand, if it is determined that PO is not equal to P *, the operating point shifts from Y2 to Y1, and the estimated pressure P2 at the end is higher than the practical water pressure (S607).
When the pump controller 103 detects a deviation from X2 based on the value of the pressure sensor 105 and the motor rotation frequency estimated from the control frequency of the inverter power supply 102, the pump controller 103 reduces the control frequency of the inverter power supply 102 to reduce the motor rotation frequency. (S608).

Next, it is determined whether a small flow rate has been detected (S609). If it is determined that the low flow rate detection has been performed, the pump operation is stopped and the low flow rate operation is performed (S612). Thereafter, the estimated terminal pressure constant control process ends.

On the other hand, if it is determined that the small flow rate detection has not been performed, it is determined whether or not PO has become equal to P * (S610). If it is determined that PO has not yet become equal to P *, the process of reducing the motor rotation frequency is continued (S608).

On the other hand, if it is determined that PO has become equal to P *, the operating point returns from Y1 to X2 on the load curve, and the estimated pressure P2 at the end becomes the required practical water pressure (S
611). Thereafter, the estimated terminal pressure constant control process ends.

FIG. 13 is a flowchart showing the processing procedure of the load curve correction processing. Referring to FIGS. 13 and 1, first, pressure inflow PX to pump 100 is detected by pressure sensor 104 provided on the inflow side of pump 100 (S1301). Based on the detected inflow pressure PX, the pump controller 103 corrects the load curve P * by the following equation (S1302).

P ☆ = P−PX P = P1 + P2 + P3 Next, the operation of the feed water pressurizing pump system will be described with reference to FIGS.
This will be described with reference to FIG. FIG. 8 is a flowchart showing the operation of the feedwater pressurizing pump system. FIG.
It is explanatory drawing of correction | amendment of the influence of the inflow pressure of a feed water pressurization pump system.

Referring to FIG. 8, FIG. 1, and FIG. 4, data indicating the relationship (performance curve) between the flow rate, the water pressure, and the pump motor speed as shown in FIG. It is. First, a formula of a load curve for operating the pump 100 is set in the controller 103 (S801). In a normal setting, the discharge pressure constant control (the equation of the load curve in this case is represented by P = P1 + P2) or the estimated end pressure constant control (the equation of the load curve in this case is P ☆ = P + KQ ² = P1 + P2 + P3) Is set and registered. Next, the flow rate for performing the low flow rate control is set and registered in the controller 103 (S
802).

The pump controller 103 determines the motor rotation frequency Nm at the time of a small flow rate from the capacity curve, the load curve, and the set value of the small flow rate which are registered therein (S8).
03).

Next, correction of the influence of the inflow pressure will be described. Referring to FIG. 9, actual control is performed based on a load curve 91 </ b> A obtained by correcting the load curve 91 of the estimated terminal pressure constant control in consideration of the influence of the pressure flowing into the pump 100. That is, as described above with reference to FIG. 13, the pressure sensor 1 provided on the inflow side of the pump 100
The load curve 91 is obtained from the pressure value PX detected by
The actual control is performed by the load curve 91A in which is corrected. In the flow rate QY, according to the load curve 91, the control is performed at the operating point 92, but the corrected load curve 91A
As a result, the estimated terminal pressure constant control is performed at the operating point 92A.

Similarly, in the case of the constant discharge pressure control, the control is performed based on the load curve 93A corrected by the pressure value PX detected by the pressure sensor 104 with respect to the load curve 93. That is, in the flow rate QY, according to the load curve 93, the control is performed at the operating point 94, but according to the corrected load curve 93A, the discharge pressure constant control is performed at the operating point 94A.

Referring again to FIG. 8, the operation of the pump is started (S804). Thereafter, the controller 103 enters the normal operation, and controls the output frequency of the inverter power supply 102 based on the pressure value of the pressure sensor 104 provided on the inflow side and the pressure value of the pressure sensor 105 provided on the discharge side. As a result, the operation is continued so that the operating point of the pump 100 is on the corrected load curve (S805). Next, it is determined whether the rotation speed of the motor 101 is equal to or greater than the small flow rate value Nm (S806). Motor rotation speed N
Is greater than or equal to Nm, it is determined whether or not a stop key has been input (S807). If it is determined that the stop key has been input, the operation of the feed water pressurizing pump system is ended. On the other hand, when it is determined that the stop key has not been input, the normal operation is continued (S805). On the other hand, when it is determined that the motor rotation speed N has become less than Nm, it is determined that the flow rate is low, and the normal operation is exited and the low flow rate operation is started (S808).

In the low flow rate operation, the pump is operated for a certain period of time with the inverter power supply output frequency set to the rated frequency (for example, 60 Hz) to increase the water pressure in the piping, and then the pump is stopped (S809). Thereafter, the water pressure of the pipe is P = P1
Until it becomes less than + P2 (S810) or until the stop key is input (S811), the operation is stopped in that state. When the water pressure of the pipe becomes lower than P (S810), the flow exits the low flow rate operation and returns to the normal operation (S805).

On the other hand, if the stop key has been input, the pump is stopped and the operation of the feed water pressurizing pump is terminated (S
811).

As described above, according to the present embodiment, the feed water pressurizing pump system corrects the load curve for the fluctuation of the inflow pressure even when the inflow pressure fluctuates in the pump. In addition, since the pump motor is controlled based on the corrected load curve, it is possible to accurately supply water to the faucet at a predetermined pressure.

Next, the operation of the feed water pressurizing pump system using the pressure sensor with a communication function will be described. 10 and 11 are flowcharts showing the operation of the feedwater pressurizing pump system using the pressure sensor with a communication function. FIG.
FIG. 2 is an explanatory diagram of an operation using a pressure sensor with a communication function of the feedwater pressurizing pump system.

Referring to FIG. 10, FIG. 11, FIG. 1, and FIG. 12, first, inverter power supply 102 is operated at a constant frequency, and tap faucet 106A at a location where the water pressure becomes lowest (hereinafter referred to as “end tap”). ) Is selected (S1001). The selection method is performed by fully opening all faucets whose water pressure seems to be low, and then examining the water pressure of each faucet after the water pressure in the building is stabilized.

Next, the pressure sensor with transmission function 108 is installed in the terminal tap 106A (S1002), and the terminal tap 10A is set.
Only the 6A is fully opened and the other faucets 106 are fully closed (S1003), and the control of the pump controller 103 is switched to the setting mode (S1004). Next, the pump controller 103 sets a necessary water pressure (practical water pressure) at the terminal tap 106A when performing the estimated terminal pressure control (S1005). In this state, the operation of the pump 100 is started (S1006), and the pressure data of the terminal faucet 106A sent from the pressure sensor with transmission function 108 installed at the terminal faucet 106A at regular intervals is received by the pump controller 103 as a signal. Received and decoded by the unit 109 and detects the water pressure of the terminal faucet 106A (S100
7).

Next, the detected water pressure is compared with the set practical water pressure (S1008). If the set practical water pressure is higher than the detected water pressure (S1009), the output frequency of the inverter power supply 102 is increased and the pump motor 1
01 is increased (S1010).

On the other hand, when the set practical water pressure is lower than the detected water pressure, the output frequency of the inverter power supply 102 is reduced to reduce the motor rotation speed of the pump motor 101 (S1011). Next, the time counter that counts the coincidence time between the detected water pressure and the set practical water pressure is cleared (S
1012). Next, the process returns to waiting for pressure data from the terminal tap 106A (S1007).

On the other hand, if the detected water pressure matches the set practical water pressure, the matching time is counted, and it is determined whether or not the matching time has exceeded a predetermined time (S101).
3). If the coincidence time exceeds a predetermined time, the coordinates of the stable operating point on the data table of the pump controller 103 are stored in the RAM (Random) of the pump controller 103.
Access Memory) (S1014).
Next, the load curve equation including the points plotted before is calculated to obtain a load curve (S1015). next,
The accuracy of the load curve equation obtained from the variation of the plotted points is obtained, and the values P and K of the load curve equation and their accuracy (reliability) are displayed on the display unit of the pump controller 103 (S1016).

Thereafter, the pump controller 103 repeatedly executes the control based on the pressure data received from the terminal tap 106A until the end key of the pump controller 103 is received (S1007 to S1016).

Referring to FIG. 12, while repeating this control, if water taps 106 in the building are opened one by one at a time interval, the operation of pump controller 103 on the data table is performed each time. The coordinates of the points are plotted as shown in FIG. A load curve equation is calculated each time based on the plotted operating points, and the accuracy is calculated from the relationship between the plotted points and the calculated load curve. On the display unit of the controller 103, the values of P and K thus obtained and the display of the accuracy are updated.

When the operator determines that there is no problem in accuracy with reference to the above values, the end key is input to determine the load curve equation, and the constant P and proportional constant K at that time are determined. The data is stored in the nonvolatile memory (S1018). After that, the pump controller 103 ends the operation in the setting mode.

Thereafter, when the operation is started in the normal operation mode, the estimated terminal pressure constant control can be performed based on the load curve equation P ☆ = P + KQ ² determined by the operation in the above-described setting mode.

As described above, according to the present embodiment, the case where the pressure loss formula of a building is unknown or the case where the pressure loss formula changes due to aging of equipment such as pipes and connection meters. Even in this case, it is possible to accurately and easily realize constant control of the estimated terminal pressure of the pump.

Further, for example, if the survey for obtaining the pressure loss formula of the building is performed in the same manner periodically every year, the aging of the piping in the building and the equipment such as the connection meter can be investigated to find the piping in the building. It can also be applied to diagnosis.

In the present embodiment, the control of the motor speed has been described as an example. However, the present invention is not limited to this. Even if the motor speed is replaced with the inverter power output frequency, the same control is performed. Can do it.

In order to improve the control accuracy, a current sensor is arranged at the inverter power supply output unit or at the inlet of the pump motor, and the allowable current value is set on the inverter power supply side or the pump controller for each inverter power supply output frequency. Register it so that the control is within the allowable current value.
The inverter power supply may be controlled so that the pump motor always rotates in a favorable state at the scheduled control speed.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram of a feedwater pressurizing pump system according to an embodiment.

FIG. 2 is an explanatory diagram of a constant estimated end pressure control method of the feed water pressurizing pump system.

FIG. 3 is a graph showing characteristics on a load side of a constant estimated end pressure control system of a feed water pressurizing pump system.

FIG. 4 is a graph showing the characteristics on the supply side of the constant estimated end pressure control method of the feed water pressurizing pump system.

FIG. 5 is a graph showing an operation of the feed water pressurizing pump system according to the constant control method of estimated end pressure.

FIG. 6 is a flowchart showing a processing procedure of a control process by a constant estimated end pressure control method of the feed water pressurizing pump system.

FIG. 7 is a flowchart showing a processing procedure of a control process by a constant estimated end pressure control method of the feed water pressurizing pump system.

FIG. 8 is a flowchart showing an operation of the feedwater pressurizing pump system.

FIG. 9 is an explanatory diagram of correction of the influence of the inflow pressure of the feedwater pressurizing pump system.

FIG. 10 is a flowchart showing an operation of the feed water pressurizing pump system using the pressure sensor with a communication function.

FIG. 11 is a flowchart showing an operation of the feedwater pressure pump system using a pressure sensor with a communication function.

FIG. 12 is an explanatory diagram of an operation using a pressure sensor with a communication function of the feedwater pressurizing pump system.

FIG. 13 is a flowchart illustrating a processing procedure of a load curve correction process.

[Explanation of symbols]

 Reference Signs List 100 pump 101 pump motor 103 pump controller 104 pressure sensor 107 signal transmission unit 108 pressure sensor with transmission function 109 signal reception unit

Claims (4)

[Claims] 1. A pump for supplying water to a water supply section through a pipe, a pump driving unit for driving the pump, and a pump control for controlling the pump driving unit based on a predetermined control method. Means for supplying pressure to the feed water, wherein the pressure feed pump system is provided in the water supply part, and comprises a pressure detection means including a signal transmission means for transmitting pressure data of the water supply part. Wherein the pump control means includes receiving means for receiving the pressure data of the water supply part transmitted by the signal transmitting means, and controls the pump driving means based on the pressure data. Pressure pump system. 2. The feed water pressurizing pump system according to claim 1, wherein the control method is constant control of estimated terminal pressure. 3. The pump control means further includes an automatic generation means for automatically generating a pressure loss formula when water is supplied to the water supply part through a pipe based on the pressure data of the water supply part. Item 3. A feed water pressurizing pump system according to Item 2. 4. The pump driving unit is a motor.
The feed water pressurizing pump system according to claim 3.