WO2017094304A1 - Pump device - Google Patents

Pump device Download PDF

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Publication number
WO2017094304A1
WO2017094304A1 PCT/JP2016/075654 JP2016075654W WO2017094304A1 WO 2017094304 A1 WO2017094304 A1 WO 2017094304A1 JP 2016075654 W JP2016075654 W JP 2016075654W WO 2017094304 A1 WO2017094304 A1 WO 2017094304A1
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WO
WIPO (PCT)
Prior art keywords
pump
control unit
unit
pressure value
pump device
Prior art date
Application number
PCT/JP2016/075654
Other languages
French (fr)
Japanese (ja)
Inventor
正和 駒井
孝英 小澤
和巳 大神田
希美 畑林
Original Assignee
株式会社 荏原製作所
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社 荏原製作所 filed Critical 株式会社 荏原製作所
Publication of WO2017094304A1 publication Critical patent/WO2017094304A1/en

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Classifications

    • 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
    • F04B49/02—Stopping, starting, unloading or idling control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • 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

Definitions

  • the present invention relates to a pump device, and particularly to a pump device provided with a submersible pump unit.
  • a pump device for transferring water in a well to the ground includes a submersible pump unit disposed in a well and a land unit connected to the submersible pump unit through a suction pipe.
  • the submersible pump unit includes a pump that sucks up water and an electric motor for driving the pump.
  • the land unit includes components such as an inverter that can change the electric motor of the submersible pump unit, and a control unit that controls the operation of the inverter.
  • the control unit When the flow rate of water flowing through the land unit is reduced to a predetermined value, the control unit issues a command to the inverter to stop the operation of the pump. When the discharge side pressure of the pump decreases to a predetermined value, the control unit issues a command to the inverter to start the pump. While the pump is in operation, the control unit outputs to the inverter a rotation speed command value for the motor for setting the difference between the discharge side pressure and the target pressure value to zero. As a result, the pump can supply water having a stable pressure.
  • the pump may inhale foreign matters (such as sand and dust) floating in the water in the well.
  • foreign matters such as sand and dust
  • a large amount of foreign matter may be floating in the water in the well.
  • the sucked-in foreign matter is transferred to the land unit, and sometimes the components of the pump device such as the flow switch, the pressure sensor, and the pressure tank are broken.
  • an object of the present invention is to provide a pump device that can start a pump without causing a failure of components of the pump device.
  • One aspect of the present invention is based on a submersible pump unit including a pump and an electric motor, a pressure sensor that measures a discharge-side pressure of the pump, and a difference between a measured value and a target pressure value of the discharge-side pressure.
  • the pump device is characterized by executing a slow start control for increasing the target pressure value to a set pressure value.
  • the increase rate is a rate at which the target pressure value increases from 0 to the set pressure value over 10 to 60 seconds. In a preferred aspect of the present invention, the increase rate is smaller than the increase rate of the discharge side pressure of the pump when the pump is started after the second time after power is supplied to the control unit.
  • the control unit maintains the target pressure value at the set pressure value after the target pressure value reaches the set pressure value.
  • control unit can be connected to an external display device by wired communication or wireless communication.
  • control unit can be connected to the external display device by near field communication (NFC).
  • NFC near field communication
  • the control unit includes a control unit side antenna unit that receives a radio wave from the external display and converts the radio wave into electric power, and an integrated circuit and a storage unit that are driven by the electric power. It is characterized by providing.
  • the control unit stores data indicating an execution history of the slow start control in the storage unit, the integrated circuit reads the data from the storage unit, and the control unit side antenna unit Transmits the data to the external display.
  • the control unit controls the rotation speed of the pump based on the difference between the target pressure value that gradually increases according to the predetermined increase rate and the measured value of the discharge side pressure of the pump. Therefore, since the rotational speed of the pump is controlled in a state where the difference between the target pressure value and the measured value of the discharge pressure of the pump is small, the rotational speed of the pump can be increased slowly. As a result, foreign matter sucked into the pump is reduced, and failure of components of the pump device such as a flow switch, a pressure sensor, and a pressure tank can be prevented.
  • FIG. 1 It is a schematic diagram which shows the pump apparatus which concerns on one Embodiment of this invention. It is a figure which shows the detail of the pump apparatus shown in FIG. It is a graph for demonstrating the normal start control which starts a pump when the measured value of the discharge side pressure of a pump falls to a starting pressure. It is a graph for demonstrating the increase rate used for slow start control. It is a graph showing the change of the discharge side pressure of a pump when slow start control is performed. It is a graph for demonstrating slow start control when water remains in a distribution pipe. It is a figure which shows the more detailed structure of a control part. It is a figure which shows the detail of a memory
  • FIG. 1 is a schematic view showing a pump device according to an embodiment of the present invention.
  • FIG. 2 is a diagram showing details of the pump device shown in FIG.
  • the pump device includes a submersible pump unit 1 that can be installed in water such as in a well and a land unit 5 that is connected to the submersible pump unit 1 via a suction pipe 4. I have.
  • the submersible pump unit 1 includes a pump 2 having an impeller (not shown) and an electric motor 3 that rotates the pump 2. When the electric motor 3 is driven, the pump 2 rotates and water is sent to the land unit 5 through the suction pipe 4.
  • Land unit 5 is located on the ground.
  • the land unit 5 detects that the control unit 10 that controls the operation of the submersible pump unit 1, the water pipe 11 connected to the suction pipe 4, and the flow rate of water flowing through the water pipe 11 has decreased to a predetermined value.
  • a pressure sensor 13 that measures the discharge side pressure of the pump 2.
  • the flow switch 12 and the pressure sensor 13 are connected to the water distribution pipe 11, and the pressure sensor 13 is provided on the downstream side of the flow switch 12.
  • One end of the water distribution pipe 11 is connected to the suction pipe 4, and the other end is connected to the discharge pipe 18.
  • a water supply device 19 such as a water tap is connected to the discharge pipe 18.
  • a check valve 21 is attached to the suction pipe 4.
  • the check valve 21 is provided to prevent a back flow of water when the pump 2 is stopped.
  • the air vent pipe 33 is connected to the water distribution pipe 11, and the open / close valve 35 is disposed in the air vent pipe 33.
  • the land unit 5 further includes a pressure tank 15 for holding the discharge side pressure of the pump 2.
  • the pressure tank 15 is connected to the water distribution pipe 11 and is provided on the downstream side of the pressure sensor 13.
  • the pressure tank 15 has a rubber bladder inside the pressure vessel. When the discharge side pressure of the pump 2 increases, the air outside the bladder is compressed and water is stored in a pressurized state. When the pressure in the water distribution pipe 11 decreases, the water held in the bladder is pushed into the water distribution pipe 11 by the compressed air. In this way, even if the pump 2 is stopped, water is supplied from the pressure tank 15 to the water distribution pipe 11 for a while.
  • the control unit 10 includes an inverter 22 that can change the speed of the electric motor 3 and a control unit 20 that controls the operation of the inverter 22.
  • the inverter 22 is connected to the control unit 20.
  • power is supplied from the power supply 16 to the inverter 22 and the control unit 20.
  • the control unit 20 controls the rotational speed of the electric motor 3, that is, the rotational speed of the pump 2 by controlling the switching operation of a power element (for example, a switching element such as an IGBT) constituting the inverter 22.
  • a power element for example, a switching element such as an IGBT
  • the flow switch 12 and the pressure sensor 13 are connected to the control unit 20 via a signal line.
  • the control unit 20 temporarily increases the operation speed of the pump 2 and accumulates the pressure in the pressure tank 15 before pump 2. Stop operation.
  • the control unit 20 starts the pump 2.
  • the control unit 20 stores a target pressure value for controlling the rotation speed of the pump 2 in advance so that water having a desired pressure is discharged from the water supply device 19. Further, the control unit 20 monitors the discharge side pressure of the pump 2 measured by the pressure sensor 13. When the pump 2 is started, the control unit 20 controls the rotational speed of the pump 2 based on the difference between the discharge side pressure of the pump 2 and the target pressure value. More specifically, the control unit 20 calculates a rotational speed command value of the pump 2 for setting the difference between the target pressure value and the discharge side pressure of the pump 2 to zero.
  • the rotational speed command value calculated by the control unit 20 is sent to the inverter 22, and the inverter 22 changes the rotational speed of the electric motor 3, that is, the rotational speed of the pump 2 based on the sent rotational speed command value. .
  • the control unit 20 controls the rotation speed of the pump 2 by controlling the operation of the inverter 22.
  • FIG. 3 is a graph for explaining normal start control for starting the pump 2 when the discharge-side pressure of the pump 2 is reduced to the starting pressure.
  • the vertical axis in FIG. 3 represents the discharge side pressure of the pump 2
  • the horizontal axis in FIG. 3 represents time.
  • the target pressure value PS for controlling the operation of the inverter 22 is constant.
  • the control unit 20 calculates a rotational speed command value for setting the difference ⁇ PI between the predetermined starting pressure PO and the target pressure value PS to 0, and sends this rotational speed command value to the inverter 22.
  • the control unit 20 calculates a rotational speed command value and controls the rotational speed of the pump 2 so that the discharge-side pressure value of the pump 2 is maintained at the target pressure value PS.
  • the value of the discharge side pressure of the pump 2 measured by the pressure sensor 13 is zero.
  • the difference between the target pressure value PS and the discharge side pressure value (that is, 0) of the pump 2 is very large.
  • the rotation speed command value that maximizes the rotation speed of the pump 2 is output to the inverter. As a result, the rotational speed of the pump 2 reaches the maximum rotational speed in an instant (for example, in 1 second).
  • the pump 2 may inhale foreign matters (for example, sand and dust) floating in the water.
  • foreign matters for example, sand and dust
  • a large amount of foreign matter may float in the water.
  • the sucked foreign matter is transferred to the land unit 5 and may cause the components such as the flow switch 12, the pressure sensor 13, and the pressure tank 15 to break down.
  • the target pressure value is increased to the set pressure value according to a predetermined increase rate. Execute slow start control. Below, slow start control is demonstrated.
  • the control unit 20 includes a detection unit (not shown) that detects whether or not power is supplied from the power supply 16. Once power is supplied to the pump device, power is continuously supplied to the pump device from the power supply 16 in order to maintain a state in which water can be supplied to the water supply device 19 such as a faucet. Therefore, the control unit 20 detects the supply of power from the power source 16 to the control unit 20 by the detection unit, so that the pump 2 is started for the first time after the pump device is installed. Whether or not can be detected.
  • the supply of power from the power supply 16 may be stopped.
  • the detection unit detects that the supply of power to the control unit 20 has started. Therefore, the control unit 20 detects whether or not the start of the pump 2 is the first start of the pump 2 after the maintenance is performed by detecting the supply of power from the power source 16 to the control unit 20 by the detection unit. Can be detected.
  • FIG. 4 is a graph for explaining an increase rate used for slow start control.
  • the vertical axis in FIG. 4 represents the target pressure value, and the horizontal axis in FIG. 4 represents the time since the pump 2 was started.
  • the control unit 20 stores a set pressure value in advance. This set pressure value is equal to the target pressure value PS described above. Furthermore, a set time TS for determining the increase rate is input to the control unit 20 through an input device (not shown).
  • the target pressure value when the time T1 has elapsed from the start of the pump 2 is P1
  • the target pressure value when the time T2 has elapsed since the start of the pump 2 is P2.
  • the target pressure value gradually increases as time elapses from the start of the pump 2.
  • FIG. 5 is a graph showing a change in the discharge side pressure of the pump 2 when the slow start control is executed.
  • the discharge-side pressure of the pump 2 measured by the pressure sensor 13 is indicated by a dotted line.
  • the on-off valve 35 disposed in the air vent pipe 33 is opened (see FIG. 2). In this state, slow start control is started.
  • the pump 2 is started, only air is first discharged from the air vent pipe 33.
  • the discharge side pressure of the pump 2 measured by the pressure sensor 13 is substantially zero.
  • the air vent pipe 33 and the on-off valve 35 may be omitted and air may be discharged from the distribution pipe 18. Also in this case, when only air flows through the water distribution pipe 11, the discharge side pressure of the pump 2 measured by the pressure sensor 13 is substantially zero.
  • the control unit 20 executes the normal start control shown in FIG.
  • the rotational speed of the pump 2 is controlled based on the difference ⁇ PI between the starting pressure PO and the target pressure value PS as shown in FIG.
  • the rotation speed command value is calculated and the rotation speed command value is sent to the inverter 22.
  • this difference ⁇ PIA is smaller than the difference between the target pressure value PS and zero.
  • the control unit 20 sets the rotational speed command value for setting the difference ⁇ PIB between the target pressure value PB and the current discharge-side pressure value PC of the pump 2 to zero. And the rotational speed command value is sent to the inverter 22.
  • This difference ⁇ PIB is smaller than the difference between the target pressure value PS and 0. Therefore, the rotational speed of the pump 2 is slowly increased.
  • the control unit 20 determines the rotational speed of the pump 2 based on the difference between the target pressure value that gradually increases according to a predetermined increase rate and the measured value of the discharge side pressure of the pump 2. To control. Accordingly, since the rotational speed of the pump 2 is controlled in a state where the difference between the target pressure value and the measured value of the discharge side pressure of the pump is small, the rotational speed of the pump 2 can be increased slowly. As a result, foreign matters (for example, sand and dust) sucked into the pump 2 are reduced, and failure of components of the pump device such as the flow switch 12, the pressure sensor 13, and the pressure tank 15 can be prevented.
  • a mixed fluid of water and air is discharged from the air vent pipe 33 during the time between the time TA and the time TB.
  • the mixed fluid is gently discharged from the air vent pipe 33, and as a result, water does not scatter around the land unit 5 over a wide range.
  • the increase rate in the slow start control is preferably smaller than the increase rate of the discharge pressure of the pump 2 in the normal start control shown in FIG.
  • the set time TS is preferably set to 10 seconds or more and 60 seconds or less. That is, the increase rate is preferably a rate at which the target pressure value increases from 0 to the set pressure value PS over 10 to 60 seconds.
  • FIG. 6 is a graph for explaining the slow start control when water remains in the suction pipe 4 and the water distribution pipe 11.
  • water may remain in the suction pipe 4 and the water distribution pipe 11 after maintenance of the pump device.
  • the measured value P3 of the pressure of water remaining in the water distribution pipe 11 is sent from the pressure sensor 13 to the control unit 20.
  • the measured value P3 of the pressure of water remaining in the water distribution pipe 11 is referred to as a residual pressure value P3.
  • the control unit 20 sets the initial target pressure value for starting the slow start control to the residual pressure. Set to the value P3.
  • the pump device further includes a display 49 that displays operation information including that the slow start control is being executed.
  • the control unit 20 includes a setting unit 46, a storage unit 47, a calculation unit 48, an I / O unit 50, and an operation panel 51.
  • the operation panel 51 functions as a human interface.
  • Various setting values relating to operation control of the pump 2 are input to the setting unit 46.
  • the set time TS for calculating the pressure increase rate described above is input to the setting unit 46.
  • the setting unit 46 and the display device 49 are provided on the operation panel 51.
  • the display device 49 may be a liquid crystal panel, and the setting unit 46 may be a touch panel type operation device.
  • the display device 49 is attached to the control unit 20, but the display device 49 may be arranged away from the control unit 20. Further, the display unit 49 may have a configuration in which a liquid crystal panel and a 7-segment LED or an indicator lamp are combined.
  • the storage unit 47 stores a history of execution of slow start control.
  • a CPU is used as the calculation unit 48.
  • the display device 49 functions as a human interface and displays driving information including that slow start control is being executed. The user can erase the display on the display unit 49 by pressing the clear button 53 on the setting unit 46.
  • FIG. 8 is a diagram showing details of the storage unit 47.
  • the storage unit 47 includes a nonvolatile storage area 47 a configured from a nonvolatile memory and a volatile storage area 47 b configured from a volatile memory.
  • the non-volatile storage area 47a is an area for storing a history of execution of slow start control, various set values necessary for the operation of the pump 2, a failure history, an operation history, and the like.
  • the volatile storage area 47b is an area for storing execution of slow start control, pressure signal, pump speed, current value, failure, alarm, and the like.
  • FIG. 9 is a view showing another embodiment of the pump device.
  • an external display device 61 is further provided.
  • the control unit 20 further includes a communication unit 60.
  • the control unit 20 is connected to the external display 61 by wired communication or wireless communication.
  • a general-purpose terminal device such as a smartphone, a mobile phone, a personal computer, a tablet, or a dedicated terminal device such as a remote monitor is adopted.
  • the display unit 49 is a simple display unit such as a 7-segment LED or an indicator lamp
  • the external display unit 61 is a high-function display unit using a liquid crystal screen and a touch input method or a push button method for the liquid crystal screen. . Since the external display 61 has a much larger amount of information that can be displayed than the simple display 49, a user unfamiliar with the pump device by displaying on the external display 61 that the slow start control is being executed. It is possible to recognize that the slow start control is being executed without misunderstanding.
  • the pump device may be installed in an electrically noisy environment such as a machine room or pump room.
  • a display unit composed of a 7-segment LED, an indicator lamp, a mechanical push button, etc., which is more resistant to electrical noise than a liquid crystal display or a touch panel is used.
  • the pump device can be installed in an environment with a lot of electrical noise.
  • the user can display that the slow start control is being executed using dedicated application software. Therefore, it is possible to provide a display of execution of slow start control according to the user's level by preparing and using a plurality of dedicated application software.
  • FIG. 10 is a view showing still another embodiment of the pump device.
  • the display unit 49 is not provided in the control unit 20, and only the external display unit (high function display unit) 61 is provided instead.
  • Other configurations are the same as those of the embodiment shown in FIG. According to the embodiment shown in FIG. 10, since it is not necessary to provide the display device itself in the pump device, the cost of the entire pump device can be further reduced.
  • FIG. 11 is a view showing still another embodiment of the pump device.
  • the indicator 49 is a simple indicator such as a 7-segment LED or indicator lamp.
  • the communication unit 60 is connected to an external display 65 provided in a maintenance management company or an administrator room via a public line.
  • the control unit 20 determines that the slow start control is being executed, and the external display device 65 periodically communicates with the control unit 20 through the public line to determine whether the slow start control is being executed.
  • the external display 65 displays that the slow start control is being executed.
  • the external display 65 may additionally display other information that the slow start control is being executed.
  • the control unit 20 of the present embodiment does not include the clear button 53 illustrated in FIG. 7, and instead, the external display device 65 includes a clear button 66 as illustrated in FIG. 11.
  • the clear button 66 When the user presses the clear button 66, the display of execution of the slow start control displayed on the external display 65 is deleted.
  • FIG. 12 is a view showing still another embodiment of the pump device.
  • the basic configuration of the control unit 20 of the present embodiment is the same as the configuration of the control unit 20 of the embodiment shown in FIG. 10, but the control unit 20 includes a control unit side antenna unit 67 instead of the communication unit 60. And an integrated circuit 68 connected to the control unit side antenna unit 67 is different.
  • the integrated circuit 68 is electrically connected to a storage unit 47 having a nonvolatile storage area 47a and a volatile storage area 47b.
  • the control part 20 of this embodiment is not provided with the indicator 49, you may provide the indicator 49 in the control part 20.
  • the external display 70 includes a display-side antenna unit 71 that transmits and receives radio waves, a data reader 74 that reads data received by the display-side antenna unit 71, and data read by the data reader 74 (for example, slow start control A display 72 for displaying the execution, operating state of the pump 2, discharge pressure, etc., a data reader 74, a display-side antenna 71, and a battery 73 for supplying power to the display 72.
  • the external display device 70 may be a general-purpose terminal device such as a smartphone, a mobile phone, a personal computer, or a tablet, or may be a dedicated terminal device such as a remote monitor.
  • a general-purpose terminal device such as a smartphone
  • the cost of producing a dedicated display device can be reduced, so that the cost of the pump device can be reduced.
  • slow start control is possible even for users who do not have expertise in pump equipment such as condominiums and building managers. Therefore, it is possible to provide a pump apparatus that can easily understand that the process is being executed.
  • the external display unit 70 is connected to the control unit 20 by a near field communication (NFC) technology. More specifically, when the display-side antenna unit 71 generates radio waves while the external display unit 70 is close to the control unit 20, the control-side antenna unit 67 receives the radio waves, and the control-unit-side antenna unit 67. Converts radio waves into electric power. This electric power is supplied to the integrated circuit 68 and the storage unit 47 to drive the integrated circuit 68 and the storage unit 47.
  • the integrated circuit 68 reads the data stored in the storage unit 47 and sends the data to the control unit side antenna unit 67.
  • the control unit side antenna unit 67 transmits radio waves together with data to the display unit side antenna unit 71.
  • the data reader 74 reads data received by the display-side antenna unit 71 and causes the display unit 72 to display the data.
  • the external display 70 is provided with a clear button 66 for erasing the display of execution of the slow start control.
  • the clear button 66 of this embodiment is a virtual button that appears on the screen of the display unit 72, but the clear button 66 may be a mechanical button provided outside the display unit 72.
  • the control unit 20 of the present embodiment does not include a clear button, the control unit 20 may be provided with a clear button. Note that operation restrictions may be provided for these operations. Specifically, a clear button 66 is provided on the external display 70 used mainly by the user, and a reset button 52 is provided on the control unit 20 used mainly by maintenance personnel.
  • wireless communication is performed between the external display unit 70 and the control unit 20, and data including execution of slow start control stored in the storage unit 47 is transmitted from the control unit 20 to the external display unit 70.
  • Sent to. even when the power of the pump device is not turned on, the control unit side antenna unit 67 generates power from the radio wave emitted from the external display device 70 and drives the integrated circuit 68 and the storage unit 47. Can do. Therefore, even when power is not supplied to the control unit 20 during maintenance of the pump device, etc., the external display 70 acquires data including the history of execution of the slow start control from the storage unit 47 of the control unit 20, The data can be displayed.
  • control unit 20 fails, it must be replaced with a new control unit 20.
  • data related to the history of execution of the slow start control of the old control unit 20 is stored in the new control unit 20. This can be inherited by the unit 47.
  • the data in the storage unit 47 of the old control unit 20 is displayed on the external display 70, and the maintenance person inputs from the operation unit of the new control unit 20 while confirming the display.
  • the storage unit 47 may store the data, or the data of the old control unit 20 may be acquired by the external display unit 70 and communicated from the external display unit 70 to the storage unit 47 of the new control unit 20. May be written.
  • the data stored in the nonvolatile storage area 47a can be inherited to the storage unit 47 of the new control unit 20, so that the history data of the execution of the slow start control is stored. There is no loss. This means that the execution history of the slow start control can be displayed even after the pump device starts automatic operation by the new control unit 20.
  • the user or maintenance staff simply includes the external display 70 close to the control unit 20 and includes the history of execution of the slow start control from the storage unit 47. Information can be acquired.
  • NFC Near field communication
  • FIG. 13 is a view showing still another embodiment of the pump device.
  • the control unit 20 includes a communication unit 60.
  • the communication unit 60 is connected to the communication unit 76 of the external display 75 by wired communication or wireless communication.
  • the external display 75 includes a control unit 80, and the control unit 80 includes a communication unit 76, a storage unit 77, a calculation unit 78, and a display unit 79.
  • the control unit 20 may include a display device 49.
  • the storage unit 77 has the configuration shown in FIG.
  • FIG. 14 is a diagram showing still another embodiment of the pump device.
  • the control unit 20 is not provided with a display, and instead, the external display 75 is provided with a display unit 79 and a setting unit 82.
  • Other configurations are the same as those of the embodiment shown in FIG.
  • the execution state of the slow start control is displayed on the display unit 79, and other various setting values are input through the setting unit 82 of the external display device 75.
  • the present invention can be used for a pump device provided with a submersible pump unit.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The present invention relates to a pump device provided with an underwater pump unit. The pump device is provided with: an underwater pump unit (1) provided with a pump (2) and an electric motor (3); a pressure sensor (13) which measures the discharge side pressure of the pump (2); and a control unit (20) which controls the rotational speed of the pump (2) on the basis of the difference between the measured value of the discharge side pressure and a target pressure value. When the control unit (20) first causes the pump (2) to operate after power has been supplied to the control unit (20), the control unit (20) executes slow-start control to increase the target pressure value to a set pressure value in accordance with a predetermined rate of increase.

Description

ポンプ装置Pump device
　本発明は、ポンプ装置に関し、特に、水中ポンプユニットを備えたポンプ装置に関するものである。 The present invention relates to a pump device, and particularly to a pump device provided with a submersible pump unit.
　井戸内の水を地上に移送するためのポンプ装置が知られている。このタイプのポンプ装置は、井戸内に配置された水中ポンプユニットと、吸込管を通じて水中ポンプユニットに接続された陸上ユニットとを備えている。水中ポンプユニットは、水を吸い上げるポンプと、このポンプを駆動するための電動機とを備えている。陸上ユニットは、水中ポンプユニットの電動機を変速可能とするインバータ、該インバータの動作を制御する制御部などの構成要素を備えている。水中ポンプユニットが駆動されると、井戸内の水は吸込管を通じて陸上ユニットに送られ、さらに陸上ユニットに接続された排出管を流れる。 A pump device for transferring water in a well to the ground is known. This type of pump device includes a submersible pump unit disposed in a well and a land unit connected to the submersible pump unit through a suction pipe. The submersible pump unit includes a pump that sucks up water and an electric motor for driving the pump. The land unit includes components such as an inverter that can change the electric motor of the submersible pump unit, and a control unit that controls the operation of the inverter. When the submersible pump unit is driven, the water in the well is sent to the land unit through the suction pipe, and further flows through the discharge pipe connected to the land unit.
　陸上ユニット内を流れる水の流量が所定の値にまで低下すると、制御部は、インバータに指令を出して、ポンプの運転を停止させる。また、ポンプの吐出側圧力が所定の値まで低下すると、制御部は、インバータに指令を出して、ポンプを始動させる。ポンプが運転されている間は、制御部は、上記吐出側圧力と目標圧力値との差を０にするための電動機の回転速度指令値をインバータに出力する。その結果、ポンプは、安定した圧力を有する水を供給することができる。 When the flow rate of water flowing through the land unit is reduced to a predetermined value, the control unit issues a command to the inverter to stop the operation of the pump. When the discharge side pressure of the pump decreases to a predetermined value, the control unit issues a command to the inverter to start the pump. While the pump is in operation, the control unit outputs to the inverter a rotation speed command value for the motor for setting the difference between the discharge side pressure and the target pressure value to zero. As a result, the pump can supply water having a stable pressure.
特許第４５８９０２６号公報Japanese Patent No. 4589026
　ポンプ装置が最初に設置されたとき、吸込管および陸上ユニット内に水は存在しない。したがって、ポンプの吐出側圧力値は０である。この状態で、ポンプを始動すると、ポンプの吐出側圧力値と目標圧力値との差が非常に大きいために、制御部は、ポンプの回転速度が最大となるような回転速度指令値をインバータに出力する。その結果、ポンプの回転速度は一瞬で（例えば、１秒で）最大の回転速度に到達する。 When the pump is first installed, there is no water in the suction pipe and onshore unit. Therefore, the discharge side pressure value of the pump is zero. When the pump is started in this state, the difference between the discharge side pressure value of the pump and the target pressure value is very large, so the control unit sends a rotational speed command value that maximizes the rotational speed of the pump to the inverter. Output. As a result, the rotational speed of the pump reaches the maximum rotational speed in an instant (for example, in 1 second).
　このような場合、ポンプは、井戸内の水に浮遊する異物（例えば、砂および塵など）を吸い込んでしまうことがある。特に、ポンプ装置を設置した直後は、井戸内の水に多量の異物が浮遊していることがある。吸い込まれた異物は、陸上ユニットまで移送され、フロースイッチ、圧力センサ、圧力タンクなどのポンプ装置の構成要素を故障させてしまうことがあった。 In such a case, the pump may inhale foreign matters (such as sand and dust) floating in the water in the well. In particular, immediately after installing the pump device, a large amount of foreign matter may be floating in the water in the well. The sucked-in foreign matter is transferred to the land unit, and sometimes the components of the pump device such as the flow switch, the pressure sensor, and the pressure tank are broken.
　また、水中ポンプユニットの交換および点検などのポンプ装置のメンテナンスを実施した後は、吸込管や陸上ユニット内に水が存在しない場合がある。したがって、メンテナンス後にポンプを初めて始動するときに、同様の問題が発生することがある。 Also, after maintenance of the pump device such as replacement and inspection of the submersible pump unit, there may be no water in the suction pipe or onshore unit. Therefore, similar problems may occur when the pump is started for the first time after maintenance.
　そこで、本発明は、ポンプ装置の構成要素の故障を発生させずに、ポンプを始動させることができるポンプ装置を提供することを目的とする。 Therefore, an object of the present invention is to provide a pump device that can start a pump without causing a failure of components of the pump device.
　本発明の一態様は、ポンプおよび電動機を備えた水中ポンプユニットと、前記ポンプの吐出側圧力を測定する圧力センサと、前記吐出側圧力の測定値と目標圧力値との差に基づいて、前記ポンプの回転速度を制御する制御部と、を備え、前記制御部は、該制御部に電力が供給された後で、最初に前記ポンプを始動するときは、予め決定された増加レートにしたがって、前記目標圧力値を設定圧力値まで増加させるスロースタート制御を実行することを特徴とするポンプ装置である。 One aspect of the present invention is based on a submersible pump unit including a pump and an electric motor, a pressure sensor that measures a discharge-side pressure of the pump, and a difference between a measured value and a target pressure value of the discharge-side pressure. A control unit for controlling the rotational speed of the pump, and when the control unit starts the pump for the first time after power is supplied to the control unit, according to a predetermined increase rate, The pump device is characterized by executing a slow start control for increasing the target pressure value to a set pressure value.
　本発明の好ましい態様は、前記増加レートは、前記目標圧力値が０から前記設定圧力値まで１０秒から６０秒かけて増加するレートであることを特徴とする。
　本発明の好ましい態様は、前記増加レートは、前記制御部に電力が供給された後で、２回目以降に前記ポンプを始動するときの、前記ポンプの吐出側圧力の増加レートよりも小さいことを特徴とする。
　本発明の好ましい態様は、前記制御部は、前記目標圧力値が前記設定圧力値に到達した後は、前記目標圧力値を前記設定圧力値に維持することを特徴とする。 In a preferred aspect of the present invention, the increase rate is a rate at which the target pressure value increases from 0 to the set pressure value over 10 to 60 seconds.
In a preferred aspect of the present invention, the increase rate is smaller than the increase rate of the discharge side pressure of the pump when the pump is started after the second time after power is supplied to the control unit. Features.
In a preferred aspect of the present invention, the control unit maintains the target pressure value at the set pressure value after the target pressure value reaches the set pressure value.
　本発明の好ましい態様は、前記スロースタート制御が実行されていることを表示する表示器をさらに備えていることを特徴とする。
　本発明の好ましい態様は、前記制御部は、外部表示器と有線通信または無線通信で接続することができることを特徴とする。
　本発明の好ましい態様は、前記制御部は、近距離無線通信（ＮＦＣ）によって前記外部表示器に接続できることを特徴とする。
　本発明の好ましい態様は、前記制御部は、前記外部表示器からの電波を受信して該電波を電力に変換する制御部側アンテナ部と、前記電力によって駆動される集積回路および記憶部とを備えることを特徴とする。
　本発明の好ましい態様は、前記制御部は、前記スロースタート制御の実行履歴を示すデータを前記記憶部に記憶し、前記集積回路は、前記記憶部から前記データを読み取り、前記制御部側アンテナ部は前記データを前記外部表示器に送信することを特徴とする。 The preferable aspect of this invention is further provided with the indicator which displays that the said slow start control is performed.
In a preferred aspect of the present invention, the control unit can be connected to an external display device by wired communication or wireless communication.
In a preferred aspect of the present invention, the control unit can be connected to the external display device by near field communication (NFC).
In a preferred aspect of the present invention, the control unit includes a control unit side antenna unit that receives a radio wave from the external display and converts the radio wave into electric power, and an integrated circuit and a storage unit that are driven by the electric power. It is characterized by providing.
In a preferred aspect of the present invention, the control unit stores data indicating an execution history of the slow start control in the storage unit, the integrated circuit reads the data from the storage unit, and the control unit side antenna unit Transmits the data to the external display.
　本発明によれば、制御部は、予め決定された増加レートにしたがって徐々に上昇する目標圧力値と、ポンプの吐出側圧力の測定値との差に基づいて、ポンプの回転速度を制御する。したがって、目標圧力値とポンプの吐出側圧力の測定値との差が小さい状態で、ポンプの回転速度が制御されるので、ポンプの回転速度をゆっくりと上昇させることができる。その結果、ポンプに吸い込まれる異物が減少し、フロースイッチ、圧力センサ、圧力タンクなどのポンプ装置の構成要素の故障を防止することができる。 According to the present invention, the control unit controls the rotation speed of the pump based on the difference between the target pressure value that gradually increases according to the predetermined increase rate and the measured value of the discharge side pressure of the pump. Therefore, since the rotational speed of the pump is controlled in a state where the difference between the target pressure value and the measured value of the discharge pressure of the pump is small, the rotational speed of the pump can be increased slowly. As a result, foreign matter sucked into the pump is reduced, and failure of components of the pump device such as a flow switch, a pressure sensor, and a pressure tank can be prevented.
本発明の一実施形態に係るポンプ装置を示す模式図である。It is a schematic diagram which shows the pump apparatus which concerns on one Embodiment of this invention. 図１に示すポンプ装置の詳細を示す図である。It is a figure which shows the detail of the pump apparatus shown in FIG. ポンプの吐出側圧力の測定値が始動圧力まで低下したときに、ポンプを始動させる通常スタート制御を説明するためのグラフである。It is a graph for demonstrating the normal start control which starts a pump when the measured value of the discharge side pressure of a pump falls to a starting pressure. スロースタート制御に用いられる増加レートを説明するためのグラフである。It is a graph for demonstrating the increase rate used for slow start control. スロースタート制御が実行されるときの、ポンプの吐出側圧力の変化を表すグラフである。It is a graph showing the change of the discharge side pressure of a pump when slow start control is performed. 配水管内に水が残っているときの、スロースタート制御を説明するためのグラフである。It is a graph for demonstrating slow start control when water remains in a distribution pipe. 制御部のより詳細な構成を示す図である。It is a figure which shows the more detailed structure of a control part. 記憶部の詳細を示す図である。It is a figure which shows the detail of a memory | storage part. ポンプ装置の他の実施形態を示す図である。It is a figure which shows other embodiment of a pump apparatus. ポンプ装置のさらに他の実施形態を示す図である。It is a figure which shows other embodiment of a pump apparatus. ポンプ装置のさらに他の実施形態を示す図である。It is a figure which shows other embodiment of a pump apparatus. ポンプ装置のさらに他の実施形態を示す図である。It is a figure which shows other embodiment of a pump apparatus. ポンプ装置のさらに他の実施形態を示す図である。It is a figure which shows other embodiment of a pump apparatus. ポンプ装置のさらに他の実施形態を示す図である。It is a figure which shows other embodiment of a pump apparatus.
　以下、本発明の実施の形態について、図面を参照して説明する。
　図１は本発明の一実施形態に係るポンプ装置を示す模式図である。図２は図１に示すポンプ装置の詳細を示す図である。図１および図２に示すように、ポンプ装置は、井戸内などの水中に設置することができる水中ポンプユニット１と、吸込管４を介して水中ポンプユニット１に接続された陸上ユニット５とを備えている。水中ポンプユニット１は、羽根車（図示しない）を有するポンプ２と、このポンプ２を回転させる電動機３とを備えている。電動機３が駆動されると、ポンプ２が回転し、水は吸込管４を通じて陸上ユニット５に送られる。 Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a schematic view showing a pump device according to an embodiment of the present invention. FIG. 2 is a diagram showing details of the pump device shown in FIG. As shown in FIGS. 1 and 2, the pump device includes a submersible pump unit 1 that can be installed in water such as in a well and a land unit 5 that is connected to the submersible pump unit 1 via a suction pipe 4. I have. The submersible pump unit 1 includes a pump 2 having an impeller (not shown) and an electric motor 3 that rotates the pump 2. When the electric motor 3 is driven, the pump 2 rotates and water is sent to the land unit 5 through the suction pipe 4.
　陸上ユニット５は地上に配置されている。陸上ユニット５は、水中ポンプユニット１の動作を制御する制御ユニット１０と、吸込管４に接続された配水管１１と、配水管１１を流れる水の流量が所定の値にまで低下したことを検知するフロースイッチ１２と、ポンプ２の吐出側圧力を測定する圧力センサ１３とを備えている。フロースイッチ１２および圧力センサ１３は配水管１１に接続されており、圧力センサ１３はフロースイッチ１２の下流側に設けられている。配水管１１の一端は吸込管４に接続され、他端は排出管１８に接続されている。排出管１８には水栓などの給水器具１９が接続されている。吸込管４には、逆止弁２１が取り付けられている。この逆止弁２１は、ポンプ２が停止したときの水の逆流を防止するために設けられている。さらに、本実施形態では、配水管１１には空気抜き管３３が接続されており、空気抜き管３３には、開閉弁３５が配置されている。 Land unit 5 is located on the ground. The land unit 5 detects that the control unit 10 that controls the operation of the submersible pump unit 1, the water pipe 11 connected to the suction pipe 4, and the flow rate of water flowing through the water pipe 11 has decreased to a predetermined value. And a pressure sensor 13 that measures the discharge side pressure of the pump 2. The flow switch 12 and the pressure sensor 13 are connected to the water distribution pipe 11, and the pressure sensor 13 is provided on the downstream side of the flow switch 12. One end of the water distribution pipe 11 is connected to the suction pipe 4, and the other end is connected to the discharge pipe 18. A water supply device 19 such as a water tap is connected to the discharge pipe 18. A check valve 21 is attached to the suction pipe 4. The check valve 21 is provided to prevent a back flow of water when the pump 2 is stopped. Furthermore, in this embodiment, the air vent pipe 33 is connected to the water distribution pipe 11, and the open / close valve 35 is disposed in the air vent pipe 33.
　陸上ユニット５は、ポンプ２の吐出側圧力を保持するための圧力タンク１５をさらに備えている。圧力タンク１５は配水管１１に接続されており、圧力センサ１３の下流側に設けられている。圧力タンク１５は、その耐圧容器の内部にゴム製のブラダを有している。ポンプ２の吐出側圧力が上昇すると、ブラダの外側の空気は圧縮され、水が加圧状態で貯留される。配水管１１内の圧力が低下すると、ブラダに保持された水は圧縮された空気によって配水管１１内に押し出される。このようにして、ポンプ２が停止しても、しばらくの間、圧力タンク１５から配水管１１に水が供給される。 The land unit 5 further includes a pressure tank 15 for holding the discharge side pressure of the pump 2. The pressure tank 15 is connected to the water distribution pipe 11 and is provided on the downstream side of the pressure sensor 13. The pressure tank 15 has a rubber bladder inside the pressure vessel. When the discharge side pressure of the pump 2 increases, the air outside the bladder is compressed and water is stored in a pressurized state. When the pressure in the water distribution pipe 11 decreases, the water held in the bladder is pushed into the water distribution pipe 11 by the compressed air. In this way, even if the pump 2 is stopped, water is supplied from the pressure tank 15 to the water distribution pipe 11 for a while.
　制御ユニット１０は、電動機３を変速可能とするインバータ２２と、インバータ２２の動作を制御する制御部２０を備えている。インバータ２２は制御部２０に接続されている。本実施形態では、インバータ２２および制御部２０には、電源１６から電力が供給される。制御部２０は、インバータ２２を構成するパワー素子（例えば、ＩＧＢＴなどのスイッチング素子）のスイッチング動作を制御することで、電動機３の回転速度、すなわちポンプ２の回転速度を制御する。 The control unit 10 includes an inverter 22 that can change the speed of the electric motor 3 and a control unit 20 that controls the operation of the inverter 22. The inverter 22 is connected to the control unit 20. In the present embodiment, power is supplied from the power supply 16 to the inverter 22 and the control unit 20. The control unit 20 controls the rotational speed of the electric motor 3, that is, the rotational speed of the pump 2 by controlling the switching operation of a power element (for example, a switching element such as an IGBT) constituting the inverter 22.
　フロースイッチ１２および圧力センサ１３は信号線を介して制御部２０に接続されている。配水管１１を流れる水の流量が所定の値にまで低下したことをフロースイッチ１２が検出すると、制御部２０はポンプ２の運転速度を一時的に上げ、圧力タンク１５に蓄圧してからポンプ２の運転を停止させる。ポンプ２の吐出側圧力が所定の始動圧力まで低下したことを圧力センサ１３が検出すると、制御部２０はポンプ２を始動させる。 The flow switch 12 and the pressure sensor 13 are connected to the control unit 20 via a signal line. When the flow switch 12 detects that the flow rate of the water flowing through the water distribution pipe 11 has decreased to a predetermined value, the control unit 20 temporarily increases the operation speed of the pump 2 and accumulates the pressure in the pressure tank 15 before pump 2. Stop operation. When the pressure sensor 13 detects that the discharge side pressure of the pump 2 has decreased to a predetermined starting pressure, the control unit 20 starts the pump 2.
　所望の圧力を有する水が給水器具１９から吐出されるように、制御部２０は、ポンプ２の回転速度を制御するための目標圧力値を予め記憶している。さらに、制御部２０は、圧力センサ１３によって測定されるポンプ２の吐出側圧力を監視している。ポンプ２が始動すると、制御部２０は、ポンプ２の吐出側圧力と目標圧力値との差に基づいて、ポンプ２の回転速度を制御する。より具体的には、制御部２０は、目標圧力値とポンプ２の吐出側圧力との差を０にするためのポンプ２の回転速度指令値を算出する。制御部２０によって算出された回転速度指令値は、インバータ２２に送られ、インバータ２２は、送られた回転速度指令値に基づいて、電動機３の回転速度、すなわち、ポンプ２の回転速度を変更する。このように、制御部２０は、インバータ２２の動作を制御することで、ポンプ２の回転速度を制御する。 The control unit 20 stores a target pressure value for controlling the rotation speed of the pump 2 in advance so that water having a desired pressure is discharged from the water supply device 19. Further, the control unit 20 monitors the discharge side pressure of the pump 2 measured by the pressure sensor 13. When the pump 2 is started, the control unit 20 controls the rotational speed of the pump 2 based on the difference between the discharge side pressure of the pump 2 and the target pressure value. More specifically, the control unit 20 calculates a rotational speed command value of the pump 2 for setting the difference between the target pressure value and the discharge side pressure of the pump 2 to zero. The rotational speed command value calculated by the control unit 20 is sent to the inverter 22, and the inverter 22 changes the rotational speed of the electric motor 3, that is, the rotational speed of the pump 2 based on the sent rotational speed command value. . Thus, the control unit 20 controls the rotation speed of the pump 2 by controlling the operation of the inverter 22.
　図３は、ポンプ２の吐出側圧力が始動圧力まで低下したときに、ポンプ２を始動させる通常スタート制御を説明するためのグラフである。図３の縦軸はポンプ２の吐出側圧力を表し、図３の横軸は時間を表す。図３に示されるように、通常スタート制御では、インバータ２２の動作を制御するための目標圧力値ＰＳは一定である。ポンプ２の吐出側圧力が所定の始動圧力ＰＯまで低下すると、制御部２０はポンプ２を始動させる。このとき、制御部２０は、所定の始動圧力ＰＯと目標圧力値ＰＳの差ΔＰＩを０にするための回転速度指令値を算出し、この回転速度指令値をインバータ２２に送る。ポンプ２の運転中、制御部２０は、ポンプ２の吐出側圧力値が目標圧力値ＰＳに維持されるように、回転速度指令値を算出し、ポンプ２の回転速度を制御する。 FIG. 3 is a graph for explaining normal start control for starting the pump 2 when the discharge-side pressure of the pump 2 is reduced to the starting pressure. The vertical axis in FIG. 3 represents the discharge side pressure of the pump 2, and the horizontal axis in FIG. 3 represents time. As shown in FIG. 3, in the normal start control, the target pressure value PS for controlling the operation of the inverter 22 is constant. When the discharge side pressure of the pump 2 decreases to a predetermined starting pressure PO, the control unit 20 starts the pump 2. At this time, the control unit 20 calculates a rotational speed command value for setting the difference ΔPI between the predetermined starting pressure PO and the target pressure value PS to 0, and sends this rotational speed command value to the inverter 22. During operation of the pump 2, the control unit 20 calculates a rotational speed command value and controls the rotational speed of the pump 2 so that the discharge-side pressure value of the pump 2 is maintained at the target pressure value PS.
　ポンプ装置が最初に設置されたときは、吸込管４と配水管１１（図２参照）内に水は存在しない。この場合、圧力センサ１３によって測定されるポンプ２の吐出側圧力の値は０である。ポンプ２の吐出側圧力値が０の状態で、ポンプ２を始動すると、目標圧力値ＰＳとポンプ２の吐出側圧力値（すなわち、０）との差が非常に大きいために、制御部２０は、ポンプ２の回転速度が最大になる回転速度指令値をインバータに出力する。その結果、ポンプ２の回転速度は、一瞬で（例えば、１秒で）最大回転速度に到達する。 When the pump device is first installed, there is no water in the suction pipe 4 and the water distribution pipe 11 (see FIG. 2). In this case, the value of the discharge side pressure of the pump 2 measured by the pressure sensor 13 is zero. When the pump 2 is started in a state where the discharge side pressure value of the pump 2 is 0, the difference between the target pressure value PS and the discharge side pressure value (that is, 0) of the pump 2 is very large. The rotation speed command value that maximizes the rotation speed of the pump 2 is output to the inverter. As a result, the rotational speed of the pump 2 reaches the maximum rotational speed in an instant (for example, in 1 second).
　このような場合、ポンプ２は、水中に浮遊する異物（例えば、砂および塵など）を吸い込んでしまうことがある。特に、ポンプ装置を設置した直後は、水中に多量の異物が浮遊していることがある。吸い込まれた異物は、陸上ユニット５まで移送され、フロースイッチ１２、圧力センサ１３、圧力タンク１５などの構成要素を故障させてしまうおそれがある。 In such a case, the pump 2 may inhale foreign matters (for example, sand and dust) floating in the water. In particular, immediately after the pump device is installed, a large amount of foreign matter may float in the water. The sucked foreign matter is transferred to the land unit 5 and may cause the components such as the flow switch 12, the pressure sensor 13, and the pressure tank 15 to break down.
　また、水中ポンプユニット１の交換および点検などのポンプ装置のメンテナンスを実施した後は、吸込管４および配水管１１内に水が存在しない場合がある。したがって、メンテナンス後にポンプ２を初めて始動するときに、同様の問題が発生することがある。 In addition, after maintenance of the pump device such as replacement and inspection of the submersible pump unit 1, water may not be present in the suction pipe 4 and the water distribution pipe 11. Therefore, similar problems may occur when the pump 2 is started for the first time after maintenance.
　そこで、本実施形態では、制御部２０に電源１６から電力が供給された後で、最初にポンプ２を始動するときは、予め決定された増加レートにしたがって、目標圧力値を設定圧力値まで増加させるスロースタート制御を実行する。以下では、スロースタート制御が説明される。 Therefore, in the present embodiment, when the pump 2 is first started after power is supplied from the power supply 16 to the control unit 20, the target pressure value is increased to the set pressure value according to a predetermined increase rate. Execute slow start control. Below, slow start control is demonstrated.
　ポンプ装置の設置後に、制御部２０には電源１６から電力が供給される。制御部２０は、電源１６から電力が供給されているか否かを検知する検知部（図示しない）を内蔵している。一旦、ポンプ装置に電力が供給されると、水栓などの給水器具１９に水を供給できる状態を維持するために、ポンプ装置には、電源１６から常に電力が供給され続ける。したがって、制御部２０は、検知部によって、制御部２０への電源１６からの電力の供給を検出することにより、ポンプ２の始動がポンプ装置の設置後で、最初のポンプ２の始動であるか否かを検出することができる。 After the pump device is installed, power is supplied to the control unit 20 from the power supply 16. The control unit 20 includes a detection unit (not shown) that detects whether or not power is supplied from the power supply 16. Once power is supplied to the pump device, power is continuously supplied to the pump device from the power supply 16 in order to maintain a state in which water can be supplied to the water supply device 19 such as a faucet. Therefore, the control unit 20 detects the supply of power from the power source 16 to the control unit 20 by the detection unit, so that the pump 2 is started for the first time after the pump device is installed. Whether or not can be detected.
　水中ポンプユニット１の交換または点検などのメンテナンスを実施するときは、電源１６からの電力の供給を停止することがある。メンテナンス後に、ポンプ装置を電源１６に接続すると、検知部は、制御部２０への電力の供給が開始されたことを検知する。したがって、制御部２０は、検知部によって、制御部２０への電源１６からの電力の供給を検出することにより、ポンプ２の始動がメンテナンスの実施後で、最初のポンプ２の始動であるか否かを検出することができる。 When performing maintenance such as replacement or inspection of the submersible pump unit 1, the supply of power from the power supply 16 may be stopped. When the pump device is connected to the power supply 16 after maintenance, the detection unit detects that the supply of power to the control unit 20 has started. Therefore, the control unit 20 detects whether or not the start of the pump 2 is the first start of the pump 2 after the maintenance is performed by detecting the supply of power from the power source 16 to the control unit 20 by the detection unit. Can be detected.
　図４は、スロースタート制御に用いられる増加レートを説明するためのグラフである。図４の縦軸は目標圧力値を表し、図４の横軸は、ポンプ２を始動してからの時間を表す。制御部２０には、設定圧力値が予め記憶されている。この設定圧力値は、上述した目標圧力値ＰＳに等しい。さらに、制御部２０には、増加レートを決定するための設定時間ＴＳが図示しない入力器を通じて入力される。制御部２０は、目標圧力値が０から設定圧力値（＝ＰＳ）まで設定時間ＴＳをかけて増加する増加レートを算出する。具体的には、制御部２０は、設定圧力値（＝ＰＳ）を設定時間ＴＳで割り算することにより、増加レートを決定する。図４に示されるように、増加レートは、単位時間ΔＴあたりの目標圧力値の増加量ΔＰであり、直線ＬＰの傾きに相当する。このようにして決定された増加レートは、制御部２０に記憶される。 FIG. 4 is a graph for explaining an increase rate used for slow start control. The vertical axis in FIG. 4 represents the target pressure value, and the horizontal axis in FIG. 4 represents the time since the pump 2 was started. The control unit 20 stores a set pressure value in advance. This set pressure value is equal to the target pressure value PS described above. Furthermore, a set time TS for determining the increase rate is input to the control unit 20 through an input device (not shown). The control unit 20 calculates an increase rate that increases over a set time TS from the target pressure value 0 to the set pressure value (= PS). Specifically, the control unit 20 determines the increase rate by dividing the set pressure value (= PS) by the set time TS. As shown in FIG. 4, the increase rate is an increase amount ΔP of the target pressure value per unit time ΔT and corresponds to the slope of the straight line LP. The increase rate determined in this way is stored in the control unit 20.
　スロースタート制御が実行されるときは、制御部２０は、この増加レートにしたがって、目標圧力値を設定圧力値（＝ＰＳ）まで徐々に増加させる。例えば、ポンプ２の始動から時間Ｔ１が経過したときの目標圧力値はＰ１であり、ポンプ２の始動から時間Ｔ２が経過したときの目標圧力値はＰ２である。このように、目標圧力値はポンプ２の始動からの時間の経過にしたがって、徐々に増加していく。 When the slow start control is executed, the control unit 20 gradually increases the target pressure value to the set pressure value (= PS) according to the increase rate. For example, the target pressure value when the time T1 has elapsed from the start of the pump 2 is P1, and the target pressure value when the time T2 has elapsed since the start of the pump 2 is P2. Thus, the target pressure value gradually increases as time elapses from the start of the pump 2.
　図５は、スロースタート制御が実行されるときの、ポンプ２の吐出側圧力の変化を表すグラフである。図５において、圧力センサ１３によって測定されたポンプ２の吐出側圧力は点線で示されている。 FIG. 5 is a graph showing a change in the discharge side pressure of the pump 2 when the slow start control is executed. In FIG. 5, the discharge-side pressure of the pump 2 measured by the pressure sensor 13 is indicated by a dotted line.
　本実施形態では、スロースタート制御を開始する前に、まず、空気抜き配管３３に配置されている開閉弁３５を開く（図２参照）。この状態で、スロースタート制御が開始される。ポンプ２が始動すると、最初に空気のみが空気抜き配管３３から吐出される。このとき、配水管１１には、空気のみが流れているため、圧力センサ１３によって測定されるポンプ２の吐出側圧力は実質的に０である。なお、図２に示した実施形態とは異なるが、空気抜き配管３３および開閉弁３５を省略して、配出管１８から空気を吐出させてもよい。この場合も、配水管１１に空気のみが流れているときは、圧力センサ１３によって測定されるポンプ２の吐出側圧力は実質的に０である。 In this embodiment, before starting the slow start control, first, the on-off valve 35 disposed in the air vent pipe 33 is opened (see FIG. 2). In this state, slow start control is started. When the pump 2 is started, only air is first discharged from the air vent pipe 33. At this time, since only air flows through the water distribution pipe 11, the discharge side pressure of the pump 2 measured by the pressure sensor 13 is substantially zero. Although different from the embodiment shown in FIG. 2, the air vent pipe 33 and the on-off valve 35 may be omitted and air may be discharged from the distribution pipe 18. Also in this case, when only air flows through the water distribution pipe 11, the discharge side pressure of the pump 2 measured by the pressure sensor 13 is substantially zero.
　ポンプ２の始動からある程度の時間が経過すると、水と空気との混合流体が空気抜き配管３３から吐出され始める（時間ＴＡ）。配水管１１を流れる空気に対する水の割合が増加するにつれて、圧力センサ１３によって測定されるポンプ２の吐出側圧力は徐々に増加する。さらに、ポンプ２の始動からある程度の時間が経過すると、空気抜き管３３からは水のみが吐出され（時間ＴＢ）、開閉弁３５が閉じられる。 When a certain amount of time has elapsed since the start of the pump 2, a mixed fluid of water and air begins to be discharged from the air vent pipe 33 (time TA). As the ratio of water to the air flowing through the water distribution pipe 11 increases, the discharge-side pressure of the pump 2 measured by the pressure sensor 13 gradually increases. Further, when a certain amount of time has elapsed since the start of the pump 2, only water is discharged from the air vent pipe 33 (time TB), and the on-off valve 35 is closed.
　ポンプ２が運転されるにつれて、やがて、吐出側圧力は、設定圧力値（＝ＰＳ）に到達する（時間ＴＣ）。時間ＴＣの後は、制御部２０は、目標圧力値を設定圧力値（＝ＰＳ）に維持する。したがって、制御部２０に電力が供給された後で、２回目以降にポンプ２を始動するときは、制御部２０は、図３に示される通常スタート制御を実行する。通常スタート制御では、図３に示されるように始動圧力ＰＯと目標圧力値ＰＳの差ΔＰＩに基づいて、ポンプ２の回転速度が制御される。 As the pump 2 is operated, the discharge side pressure eventually reaches the set pressure value (= PS) (time TC). After the time TC, the control unit 20 maintains the target pressure value at the set pressure value (= PS). Therefore, when the pump 2 is started after the second time after power is supplied to the control unit 20, the control unit 20 executes the normal start control shown in FIG. In the normal start control, the rotational speed of the pump 2 is controlled based on the difference ΔPI between the starting pressure PO and the target pressure value PS as shown in FIG.
　図５に示されるように、ポンプ２の始動から時間ＴＡが経過したときに、制御部２０は、目標圧力値ＰＡと０（＝ポンプ２の吐出側圧力値）との差ΔＰＩＡを０にするための回転速度指令値を算出し、この回転速度指令値をインバータ２２に送る。図５から分かるように、この差ΔＰＩＡは、目標圧力値ＰＳと０との差よりも小さい。同様に、ポンプ２の始動から時間ＴＢが経過したときに、制御部２０は、目標圧力値ＰＢとポンプ２の現在の吐出側圧力値ＰＣとの差ΔＰＩＢを０にするための回転速度指令値を算出し、この回転速度指令値をインバータ２２に送る。この差ΔＰＩＢは、目標圧力値ＰＳと０との差よりも小さい。したがって、ポンプ２の回転速度がゆっくりと増加される。 As shown in FIG. 5, when the time TA has elapsed since the start of the pump 2, the control unit 20 sets the difference ΔPIA between the target pressure value PA and 0 (= the discharge-side pressure value of the pump 2) to 0. The rotation speed command value is calculated and the rotation speed command value is sent to the inverter 22. As can be seen from FIG. 5, this difference ΔPIA is smaller than the difference between the target pressure value PS and zero. Similarly, when the time TB has elapsed since the start of the pump 2, the control unit 20 sets the rotational speed command value for setting the difference ΔPIB between the target pressure value PB and the current discharge-side pressure value PC of the pump 2 to zero. And the rotational speed command value is sent to the inverter 22. This difference ΔPIB is smaller than the difference between the target pressure value PS and 0. Therefore, the rotational speed of the pump 2 is slowly increased.
　本実施形態によれば、制御部２０は、予め決定された増加レートにしたがって徐々に上昇する目標圧力値と、ポンプ２の吐出側圧力の測定値との差に基づいて、ポンプ２の回転速度を制御する。したがって、目標圧力値とポンプの吐出側圧力の測定値との差が小さい状態で、ポンプ２の回転速度が制御されるので、ポンプ２の回転速度をゆっくりと上昇させることができる。その結果、ポンプ２に吸い込まれる異物（例えば、砂および塵）が減少し、フロースイッチ１２、圧力センサ１３、圧力タンク１５などのポンプ装置の構成要素の故障を防止することができる。 According to the present embodiment, the control unit 20 determines the rotational speed of the pump 2 based on the difference between the target pressure value that gradually increases according to a predetermined increase rate and the measured value of the discharge side pressure of the pump 2. To control. Accordingly, since the rotational speed of the pump 2 is controlled in a state where the difference between the target pressure value and the measured value of the discharge side pressure of the pump is small, the rotational speed of the pump 2 can be increased slowly. As a result, foreign matters (for example, sand and dust) sucked into the pump 2 are reduced, and failure of components of the pump device such as the flow switch 12, the pressure sensor 13, and the pressure tank 15 can be prevented.
　上述したように、時間ＴＡと時間ＴＢの間の時間において、空気抜き配管３３から水と空気の混合流体が吐出される。本実施形態によれば、ポンプ２の回転速度がゆっくりと増加するために、混合流体が空気抜き配管３３から緩やかに吐出され、その結果、水が陸上ユニット５の周囲に広範囲にわたって飛び散ることがない。 As described above, a mixed fluid of water and air is discharged from the air vent pipe 33 during the time between the time TA and the time TB. According to this embodiment, since the rotational speed of the pump 2 increases slowly, the mixed fluid is gently discharged from the air vent pipe 33, and as a result, water does not scatter around the land unit 5 over a wide range.
　スロースタート制御における上記増加レートは、図３に示される通常スタート制御におけるポンプ２の吐出圧力の増加レートよりも小さいことが好ましい。この観点から、設定時間ＴＳは、１０秒以上６０秒以下に設定されるのが好ましい。すなわち、上記増加レートは、目標圧力値が０から設定圧力値ＰＳまで１０秒から６０秒かけて増加するレートであるのが好ましい。 The increase rate in the slow start control is preferably smaller than the increase rate of the discharge pressure of the pump 2 in the normal start control shown in FIG. From this point of view, the set time TS is preferably set to 10 seconds or more and 60 seconds or less. That is, the increase rate is preferably a rate at which the target pressure value increases from 0 to the set pressure value PS over 10 to 60 seconds.
　図６は、吸込管４および配水管１１内に水が残っているときの、スロースタート制御を説明するためのグラフである。例えば、ポンプ装置のメンテナンスを実施した後で、吸込管４および配水管１１内に水が残っている場合がある。メンテナンス後に、制御部２０に電源１６から電力を供給すると、配水管１１内に残っている水の圧力の測定値Ｐ３が圧力センサ１３から制御部２０に送られる。以下の説明では、配水管１１内に残っている水の圧力の測定値Ｐ３を残圧値Ｐ３と称する。 FIG. 6 is a graph for explaining the slow start control when water remains in the suction pipe 4 and the water distribution pipe 11. For example, water may remain in the suction pipe 4 and the water distribution pipe 11 after maintenance of the pump device. When power is supplied from the power supply 16 to the control unit 20 after the maintenance, the measured value P3 of the pressure of water remaining in the water distribution pipe 11 is sent from the pressure sensor 13 to the control unit 20. In the following description, the measured value P3 of the pressure of water remaining in the water distribution pipe 11 is referred to as a residual pressure value P3.
　制御部２０に電源１６から電力を供給したときに、圧力センサ１３から制御部２０に残圧値Ｐ３が送られた場合、制御部２０は、スロースタート制御を開始する初期目標圧力値を残圧値Ｐ３に設定する。ポンプ２を始動させた後は、制御部２０は、残圧値Ｐ３から設定圧力値（＝ＰＳ）まで、図４を参照して説明された増加レートにしたがって、目標圧力値を徐々に増加させる。すなわち、制御部２０は、設定圧力値（＝ＰＳ）を設定時間ＴＳで割り算することにより得られた増加レートにしたがって、残圧値Ｐ３から設定圧力値ＰＳまで目標圧力値を徐々に増加させる。このように、配水管１１内に水が残っている場合においても、制御部２０に電力が供給された後で、最初にポンプ２を始動するときは、スロースタート制御が実行される。 When the residual pressure value P3 is sent from the pressure sensor 13 to the control unit 20 when power is supplied from the power supply 16 to the control unit 20, the control unit 20 sets the initial target pressure value for starting the slow start control to the residual pressure. Set to the value P3. After the pump 2 is started, the control unit 20 gradually increases the target pressure value from the residual pressure value P3 to the set pressure value (= PS) according to the increase rate described with reference to FIG. . That is, the control unit 20 gradually increases the target pressure value from the residual pressure value P3 to the set pressure value PS according to the increase rate obtained by dividing the set pressure value (= PS) by the set time TS. Thus, even when water remains in the water distribution pipe 11, when the pump 2 is first started after power is supplied to the control unit 20, the slow start control is executed.
　ポンプ２の吐出側圧力の測定値が設定圧力値ＰＳに到達した後は、制御部２０は、目標圧力値を設定圧力値（＝ＰＳ）に維持する。したがって、制御部２０に電力が供給された後で、２回目以降にポンプ２を始動するときは、制御部２０は、図３に示される通常スタート制御を実行する。 After the measured value of the discharge side pressure of the pump 2 reaches the set pressure value PS, the control unit 20 maintains the target pressure value at the set pressure value (= PS). Therefore, when the pump 2 is started after the second time after power is supplied to the control unit 20, the control unit 20 executes the normal start control shown in FIG.
　次に、上述したポンプ装置のより詳細な構成について図７を参照して説明する。図７に示すように、ポンプ装置は、スロースタート制御が実行されていることを含む運転情報を表示する表示器４９をさらに備えている。制御部２０は、設定部４６、記憶部４７、演算部４８、Ｉ／Ｏ部５０、および運転パネル５１を備えている。運転パネル５１は、ヒューマンインターフェースとして機能する。設定部４６には、ポンプ２の運転制御に関する各種設定値が入力される。例えば、上述した圧力増加レートを算出するための設定時間ＴＳが設定部４６に入力される。設定部４６および表示器４９は、運転パネル５１に設けられている。表示器４９は液晶パネルであり、設定部４６はタッチパネル式操作器でもよい。本実施形態では、表示器４９は制御部２０に取り付けられているが、表示器４９は制御部２０から離れて配置されてもよい。また、表示器４９は液晶パネルと７セグメントＬＥＤや表示灯を組み合わせた構成でもよい。 Next, a more detailed configuration of the above-described pump device will be described with reference to FIG. As shown in FIG. 7, the pump device further includes a display 49 that displays operation information including that the slow start control is being executed. The control unit 20 includes a setting unit 46, a storage unit 47, a calculation unit 48, an I / O unit 50, and an operation panel 51. The operation panel 51 functions as a human interface. Various setting values relating to operation control of the pump 2 are input to the setting unit 46. For example, the set time TS for calculating the pressure increase rate described above is input to the setting unit 46. The setting unit 46 and the display device 49 are provided on the operation panel 51. The display device 49 may be a liquid crystal panel, and the setting unit 46 may be a touch panel type operation device. In the present embodiment, the display device 49 is attached to the control unit 20, but the display device 49 may be arranged away from the control unit 20. Further, the display unit 49 may have a configuration in which a liquid crystal panel and a 7-segment LED or an indicator lamp are combined.
　記憶部４７は、スロースタート制御の実行の履歴などを記憶する。演算部４８としては、ＣＰＵが使用される。表示器４９は、ヒューマンインターフェースとして機能し、スロースタート制御が実行されていることを含む運転情報を表示する。ユーザーは、設定部４６上のクリアボタン５３を押すことにより、表示器４９での表示を消去することができる。 The storage unit 47 stores a history of execution of slow start control. A CPU is used as the calculation unit 48. The display device 49 functions as a human interface and displays driving information including that slow start control is being executed. The user can erase the display on the display unit 49 by pressing the clear button 53 on the setting unit 46.
　図８は記憶部４７の詳細を示す図である。図８に示すように、記憶部４７は、不揮発性メモリから構成された不揮発性記憶領域４７ａと、揮発性メモリから構成された揮発性記憶領域４７ｂを備えている。不揮発性記憶領域４７ａは、スロースタート制御の実行の履歴、ポンプ２の運転に必要な各種設定値、故障履歴、運転履歴などを記憶する領域である。揮発性記憶領域４７ｂは、スロースタート制御の実行、圧力信号、ポンプ回転数、電流値、故障、警報などを記憶する領域である。 FIG. 8 is a diagram showing details of the storage unit 47. As illustrated in FIG. 8, the storage unit 47 includes a nonvolatile storage area 47 a configured from a nonvolatile memory and a volatile storage area 47 b configured from a volatile memory. The non-volatile storage area 47a is an area for storing a history of execution of slow start control, various set values necessary for the operation of the pump 2, a failure history, an operation history, and the like. The volatile storage area 47b is an area for storing execution of slow start control, pressure signal, pump speed, current value, failure, alarm, and the like.
　図９はポンプ装置の他の実施形態を示す図である。本実施形態では、表示器４９に加えて、外部表示器６１がさらに設けられている。図９に示すように、制御部２０は通信部６０をさらに備えている。制御部２０は有線通信または無線通信によって外部表示器６１に接続されている。外部表示器６１として、例えばスマートフォンや携帯電話、パソコン、タブレットの汎用端末機器または遠隔監視器などの専用端末機器が採用される。本実施形態では、表示器４９は７セグメントＬＥＤや表示灯などの簡易な表示器であり、外部表示器６１は液晶画面と液晶画面のタッチ入力方式や押圧ボタン方式用いた高機能表示器である。簡易な表示器４９に比べて外部表示器６１は表示できる情報量が格段に多いため、外部表示器６１にスロースタート制御が実行されていることを表示することによって、ポンプ装置に不慣れなユーザーは誤解することなく、スロースタート制御が実行されていることを認識することが出来る。 FIG. 9 is a view showing another embodiment of the pump device. In the present embodiment, in addition to the display device 49, an external display device 61 is further provided. As shown in FIG. 9, the control unit 20 further includes a communication unit 60. The control unit 20 is connected to the external display 61 by wired communication or wireless communication. As the external display 61, for example, a general-purpose terminal device such as a smartphone, a mobile phone, a personal computer, a tablet, or a dedicated terminal device such as a remote monitor is adopted. In this embodiment, the display unit 49 is a simple display unit such as a 7-segment LED or an indicator lamp, and the external display unit 61 is a high-function display unit using a liquid crystal screen and a touch input method or a push button method for the liquid crystal screen. . Since the external display 61 has a much larger amount of information that can be displayed than the simple display 49, a user unfamiliar with the pump device by displaying on the external display 61 that the slow start control is being executed. It is possible to recognize that the slow start control is being executed without misunderstanding.
　ポンプ装置は機械室やポンプ室などの電気的なノイズの多い環境に設置されることがある。本実施形態によれば、ポンプ装置に組み込まれる表示器４９として、液晶表示やタッチパネルよりも電気的ノイズに強い７セグメントＬＥＤや表示灯、機械的な押圧ボタンなどにて構成された表示器を使用することにより、外部環境から発生される電気的なノイズにより外部表示器６１の液晶表示やタッチパネル操作に異常が発生した場合でも、表示器４９によりポンプ装置の運転に必要な最低限度の表示や操作を行うことが可能なため、ポンプ装置を電気的ノイズの多い環境下にも設置することができる。さらに、外部表示器６１として、スマートフォン、携帯電話、パソコン、タブレットなどの汎用端末機器を使用すると、ユーザーは専用のアプリケーションソフトウエアを用いて、スロースタート制御が実行されていることを表示させることができるため、専用のアプリケーションソフトウエアを複数用意し使い分けることによりユーザーのレベルに沿ったスロースタート制御の実行の表示を提供することが可能である。 The pump device may be installed in an electrically noisy environment such as a machine room or pump room. According to the present embodiment, as the display unit 49 incorporated in the pump device, a display unit composed of a 7-segment LED, an indicator lamp, a mechanical push button, etc., which is more resistant to electrical noise than a liquid crystal display or a touch panel is used. Thus, even if an abnormality occurs in the liquid crystal display or touch panel operation of the external display 61 due to electrical noise generated from the external environment, the minimum display or operation necessary for the operation of the pump device is performed by the display 49. Therefore, the pump device can be installed in an environment with a lot of electrical noise. Further, when a general-purpose terminal device such as a smartphone, a mobile phone, a personal computer, or a tablet is used as the external display 61, the user can display that the slow start control is being executed using dedicated application software. Therefore, it is possible to provide a display of execution of slow start control according to the user's level by preparing and using a plurality of dedicated application software.
　図１０はポンプ装置のさらに他の実施形態を示す図である。本実施形態では、制御部２０に表示器４９は設けられていなく、代わりに外部表示器（高機能表示器）６１のみが設けられる。その他の構成は、図９に示す実施形態と同様である。図１０に示す実施形態によれば、ポンプ装置には表示器自体を設ける必要がなくなるので、ポンプ装置全体のコストを更に下げることが可能である。 FIG. 10 is a view showing still another embodiment of the pump device. In the present embodiment, the display unit 49 is not provided in the control unit 20, and only the external display unit (high function display unit) 61 is provided instead. Other configurations are the same as those of the embodiment shown in FIG. According to the embodiment shown in FIG. 10, since it is not necessary to provide the display device itself in the pump device, the cost of the entire pump device can be further reduced.
　図１１はポンプ装置のさらに他の実施形態を示す図である。図１１において、表示器４９は７セグメントＬＥＤや表示灯などの簡易な表示器である。通信部６０は公衆回線を介して保守管理会社または管理人室に設けられた外部表示器６５に接続されている。制御部２０は、スロースタート制御が実行されていることを判断し、外部表示器６５は制御部２０に公衆回線を通じて定期的に通信し、スロースタート制御が実行されているか否かを制御部２０に問い合わせる。そして、スロースタート制御が実行されている場合は、外部表示器６５はスロースタート制御が実行されていることを表示する。外部表示器６５はスロースタート制御が実行されていることを他の情報に追加的に表示してもよい。 FIG. 11 is a view showing still another embodiment of the pump device. In FIG. 11, the indicator 49 is a simple indicator such as a 7-segment LED or indicator lamp. The communication unit 60 is connected to an external display 65 provided in a maintenance management company or an administrator room via a public line. The control unit 20 determines that the slow start control is being executed, and the external display device 65 periodically communicates with the control unit 20 through the public line to determine whether the slow start control is being executed. Contact When the slow start control is being executed, the external display 65 displays that the slow start control is being executed. The external display 65 may additionally display other information that the slow start control is being executed.
　本実施形態の制御部２０は、図７に示すクリアボタン５３を備えていなく、代わりに、外部表示器６５は、図１１に示すように、クリアボタン６６を備えている。ユーザーがこのクリアボタン６６を押すと、外部表示器６５上に表示されているスロースタート制御の実行の表示が消去される。 The control unit 20 of the present embodiment does not include the clear button 53 illustrated in FIG. 7, and instead, the external display device 65 includes a clear button 66 as illustrated in FIG. 11. When the user presses the clear button 66, the display of execution of the slow start control displayed on the external display 65 is deleted.
　図１２はポンプ装置のさらに他の実施形態を示す図である。本実施形態の制御部２０の基本的構成は図１０に示す実施形態の制御部２０の構成と同じであるが、制御部２０が通信部６０に代えて、制御部側アンテナ部６７を備えている点、および制御部側アンテナ部６７に接続された集積回路６８を備えている点で異なっている。集積回路６８は、不揮発性記憶領域４７ａ、揮発性記憶領域４７ｂを有する記憶部４７に電気的に接続されている。なお、本実施形態の制御部２０は表示器４９を備えていないが、制御部２０に表示器４９を設けてもよい。 FIG. 12 is a view showing still another embodiment of the pump device. The basic configuration of the control unit 20 of the present embodiment is the same as the configuration of the control unit 20 of the embodiment shown in FIG. 10, but the control unit 20 includes a control unit side antenna unit 67 instead of the communication unit 60. And an integrated circuit 68 connected to the control unit side antenna unit 67 is different. The integrated circuit 68 is electrically connected to a storage unit 47 having a nonvolatile storage area 47a and a volatile storage area 47b. In addition, although the control part 20 of this embodiment is not provided with the indicator 49, you may provide the indicator 49 in the control part 20. FIG.
　外部表示器７０は、電波を送受信する表示器側アンテナ部７１と、表示器側アンテナ部７１で受信したデータを読み取るデータリーダー７４と、データリーダー７４によって読み取られたデータ（例えば、スロースタート制御の実行、ポンプ２の運転状態、吐出し圧力など）を表示する表示部７２と、データリーダー７４、表示器側アンテナ部７１、および表示部７２に電力を供給するバッテリー７３とを備えている。外部表示器７０として、例えばスマートフォンや携帯電話、パソコン、タブレット等の汎用端末機器でもよく、遠隔監視器などの専用の端末機器でもよい。特に、スマートフォンなどの汎用端末機器を外部表示器として使用すれば、専用の表示器を制作するコストが削減できるので、ポンプ装置のコストを下げることができる。また、複数のユーザーが個々の汎用端末機器にスロースタート制御の実行を表示させることができるので、マンションやビルの管理人のようなポンプ装置に関する専門知識のないユーザーに対しても、スロースタート制御が実行されていることを分かり易く知らせることができるポンプ装置を安価に提供することができる。 The external display 70 includes a display-side antenna unit 71 that transmits and receives radio waves, a data reader 74 that reads data received by the display-side antenna unit 71, and data read by the data reader 74 (for example, slow start control A display 72 for displaying the execution, operating state of the pump 2, discharge pressure, etc., a data reader 74, a display-side antenna 71, and a battery 73 for supplying power to the display 72. The external display device 70 may be a general-purpose terminal device such as a smartphone, a mobile phone, a personal computer, or a tablet, or may be a dedicated terminal device such as a remote monitor. In particular, if a general-purpose terminal device such as a smartphone is used as an external display device, the cost of producing a dedicated display device can be reduced, so that the cost of the pump device can be reduced. In addition, since multiple users can display the execution of slow start control on each general-purpose terminal device, slow start control is possible even for users who do not have expertise in pump equipment such as condominiums and building managers. Therefore, it is possible to provide a pump apparatus that can easily understand that the process is being executed.
　外部表示器７０は、近距離無線通信（ＮＦＣ：Near　Field　Communication）の技術によって制御部２０と接続される。より具体的には、外部表示器７０を制御部２０に近づけた状態で、表示器側アンテナ部７１が電波を発生すると、その電波を制御部側アンテナ部６７が受け取り、制御部側アンテナ部６７は電波を電力に変換する。この電力は集積回路６８および記憶部４７に供給されてこれら集積回路６８および記憶部４７を駆動する。集積回路６８は記憶部４７に記憶されている上記データを読み取り、制御部側アンテナ部６７にデータを送る。制御部側アンテナ部６７は、データとともに電波を表示器側アンテナ部７１に送信する。データリーダー７４は、表示器側アンテナ部７１が受信したデータを読み取り、そのデータを表示部７２に表示させる。 The external display unit 70 is connected to the control unit 20 by a near field communication (NFC) technology. More specifically, when the display-side antenna unit 71 generates radio waves while the external display unit 70 is close to the control unit 20, the control-side antenna unit 67 receives the radio waves, and the control-unit-side antenna unit 67. Converts radio waves into electric power. This electric power is supplied to the integrated circuit 68 and the storage unit 47 to drive the integrated circuit 68 and the storage unit 47. The integrated circuit 68 reads the data stored in the storage unit 47 and sends the data to the control unit side antenna unit 67. The control unit side antenna unit 67 transmits radio waves together with data to the display unit side antenna unit 71. The data reader 74 reads data received by the display-side antenna unit 71 and causes the display unit 72 to display the data.
　外部表示器７０は、スロースタート制御の実行の表示を消去するためのクリアボタン６６を備えている。ユーザーがこのクリアボタン６６を押すと、表示部７２に表示されているスロースタート制御の実行の表示が消去される。本実施形態のクリアボタン６６は、表示部７２の画面上に現れる仮想的なボタンであるが、クリアボタン６６は表示部７２の外に設けられた機械的なボタンであってもよい。本実施形態の制御部２０はクリアボタンを備えていないが、制御部２０にクリアボタンを設けてもよい。なお、これらの操作には、操作制限を設けてもよい。具体的には、ユーザーが主に使用する外部表示器７０にクリアボタン６６を設け、メンテナンス員が主に使用する制御部２０にリセットボタン５２を設ける。このように制御部２０にのみリセットボタン５２を設けることで、ユーザーのリセットボタン５２の誤操作を防ぐことができる。パスワード等の複雑な使用制限の解除方法ではなく、外部表示器７０を設けることで、ユーザーの誤操作によるスロースタート制御の実行のクリアを防止することができる。 The external display 70 is provided with a clear button 66 for erasing the display of execution of the slow start control. When the user presses the clear button 66, the display of execution of the slow start control displayed on the display unit 72 is erased. The clear button 66 of this embodiment is a virtual button that appears on the screen of the display unit 72, but the clear button 66 may be a mechanical button provided outside the display unit 72. Although the control unit 20 of the present embodiment does not include a clear button, the control unit 20 may be provided with a clear button. Note that operation restrictions may be provided for these operations. Specifically, a clear button 66 is provided on the external display 70 used mainly by the user, and a reset button 52 is provided on the control unit 20 used mainly by maintenance personnel. Thus, by providing the reset button 52 only in the control unit 20, it is possible to prevent an erroneous operation of the reset button 52 by the user. By providing the external display 70 instead of a method of canceling complicated use restrictions such as a password, it is possible to prevent the execution of the slow start control from being erroneously performed by the user.
　本実施形態では、外部表示器７０と制御部２０との間で無線通信が行われ、記憶部４７に記憶されているスロースタート制御の実行などを含むデータは、制御部２０から外部表示器７０に送られる。本実施形態によれば、ポンプ装置の電源が入っていない場合でも、制御部側アンテナ部６７は外部表示器７０から発せられる電波から電力を発生し、集積回路６８および記憶部４７を駆動することができる。したがって、ポンプ装置のメンテンナンス中などにおいて制御部２０に電力が供給されていないときでも、外部表示器７０は、制御部２０の記憶部４７からスロースタート制御の実行の履歴を含むデータを取得し、該データを表示することができる。 In the present embodiment, wireless communication is performed between the external display unit 70 and the control unit 20, and data including execution of slow start control stored in the storage unit 47 is transmitted from the control unit 20 to the external display unit 70. Sent to. According to the present embodiment, even when the power of the pump device is not turned on, the control unit side antenna unit 67 generates power from the radio wave emitted from the external display device 70 and drives the integrated circuit 68 and the storage unit 47. Can do. Therefore, even when power is not supplied to the control unit 20 during maintenance of the pump device, etc., the external display 70 acquires data including the history of execution of the slow start control from the storage unit 47 of the control unit 20, The data can be displayed.
　制御部２０が故障した場合には新制御部２０に交換する必要がある。この制御部２０の交換時に、故障した旧制御部２０はすでに電源が入らない状態においても、本実施形態では、旧制御部２０のスロースタート制御の実行の履歴に関するデータを新制御部２０の記憶部４７に継承することが可能となる。具体的には、旧制御部２０の記憶部４７の該データを外部表示器７０にて表示し、その表示を確認しながらメンテナンス員が新制御部２０の操作部より入力し、新制御部２０の記憶部４７に該データを記憶させてもよいし、旧制御部２０の該データを外部表示器７０にて取得し、外部表示器７０から新しい制御部２０の記憶部４７へと通信手段にて書き込んでもよい。制御部２０が電源が入らない状態で故障しても、不揮発性記憶領域４７ａに記憶されているデータを新制御部２０の記憶部４７に継承できるので、スロースタート制御の実行の履歴のデータが損失されることない。これは、ポンプ装置が新制御部２０にて自動運転を開始した後でも、スロースタート制御の実行の履歴を表示することができることを意味する。 If the control unit 20 fails, it must be replaced with a new control unit 20. In this embodiment, when the failed old control unit 20 is not turned on at the time of replacement of the control unit 20, in the present embodiment, data related to the history of execution of the slow start control of the old control unit 20 is stored in the new control unit 20. This can be inherited by the unit 47. Specifically, the data in the storage unit 47 of the old control unit 20 is displayed on the external display 70, and the maintenance person inputs from the operation unit of the new control unit 20 while confirming the display. The storage unit 47 may store the data, or the data of the old control unit 20 may be acquired by the external display unit 70 and communicated from the external display unit 70 to the storage unit 47 of the new control unit 20. May be written. Even if the control unit 20 fails in a state where the power is not turned on, the data stored in the nonvolatile storage area 47a can be inherited to the storage unit 47 of the new control unit 20, so that the history data of the execution of the slow start control is stored. There is no loss. This means that the execution history of the slow start control can be displayed even after the pump device starts automatic operation by the new control unit 20.
　本実施形態によれば、ポンプ装置に電力が供給されていないときでも、ユーザーやメンテナンス員が外部表示器７０を制御部２０に近づけるだけで、記憶部４７からスロースタート制御の実行の履歴を含む情報を取得することが可能である。 According to the present embodiment, even when power is not supplied to the pump device, the user or maintenance staff simply includes the external display 70 close to the control unit 20 and includes the history of execution of the slow start control from the storage unit 47. Information can be acquired.
　本実施形態で採用される近距離無線通信（ＮＦＣ：Near　Field　Communication）は、数ｃｍの近距離でのみ相互通信が可能な技術である。したがって、外部表示器７０にスロースタート制御の実行やその他の各種情報を表示させるためには、ユーザーやメンテナンス員は外部表示器７０を制御部２０に近づける必要がある。このことは、外部表示器７０を操作するときは、ユーザーやメンテナンス員はポンプ装置の近くにいることを意味する。したがって、ユーザーやメンテナンス員はポンプ装置を目視しながら外部表示器７０を操作することになり、誤操作に起因したポンプ装置の予期しない動作を防止することに繋がる。また、複数のポンプ装置が設置された現場では、スロースタート制御の実行を表示したいポンプ装置の近距離でのみ通信可能となる為、無線通信にてよくある意図しない別のポンプ装置のスロースタート制御の実行を表示してしまうという誤表示を防止することが出来る。 Near field communication (NFC) employed in this embodiment is a technology that enables mutual communication only at a short distance of several centimeters. Therefore, in order to display the execution of the slow start control and other various information on the external display 70, the user and maintenance personnel need to bring the external display 70 close to the control unit 20. This means that when operating the external display 70, the user and maintenance personnel are near the pump device. Therefore, the user or the maintenance staff operates the external display unit 70 while visually observing the pump device, which leads to preventing an unexpected operation of the pump device due to an erroneous operation. In addition, since it is possible to communicate only at a short distance of the pump device for which it is desired to display the execution of the slow start control at the site where a plurality of pump devices are installed, the slow start control of another unintended pump device that is often used in wireless communication It is possible to prevent the erroneous display of displaying the execution of.
　図１３はポンプ装置のさらに他の実施形態を示す図である。本実施形態では、制御部２０は通信部６０を備えている。通信部６０は、有線通信または無線通信によって外部表示器７５の通信部７６に接続されている。外部表示器７５は制御部８０を備えており、制御部８０は通信部７６、記憶部７７、演算部７８、および表示部７９を備えている。制御部２０は、表示器４９を備えていてもよい。また、記憶部７７は記憶部４７と同様に図８の構成とする。 FIG. 13 is a view showing still another embodiment of the pump device. In the present embodiment, the control unit 20 includes a communication unit 60. The communication unit 60 is connected to the communication unit 76 of the external display 75 by wired communication or wireless communication. The external display 75 includes a control unit 80, and the control unit 80 includes a communication unit 76, a storage unit 77, a calculation unit 78, and a display unit 79. The control unit 20 may include a display device 49. The storage unit 77 has the configuration shown in FIG.
　図１４はポンプ装置のさらに他の実施形態を示す図である。本実施形態では、制御部２０には表示器は設けられておらず、代わりに、外部表示器７５に表示部７９と設定部８２が設けられている。その他の構成は図１３に示す実施形態と同様である。本実施形態では、スロースタート制御の実行の状態は表示部７９に表示され、その他各種設定値の入力は、外部表示器７５の設定部８２を通じて行われる。 FIG. 14 is a diagram showing still another embodiment of the pump device. In the present embodiment, the control unit 20 is not provided with a display, and instead, the external display 75 is provided with a display unit 79 and a setting unit 82. Other configurations are the same as those of the embodiment shown in FIG. In the present embodiment, the execution state of the slow start control is displayed on the display unit 79, and other various setting values are input through the setting unit 82 of the external display device 75.
　上述した実施形態は、本発明が属する技術分野における通常の知識を有する者が本発明を実施できることを目的として記載されたものである。上記実施形態の種々の変形例は、当業者であれば当然になしうることであり、本発明の技術的思想は他の実施形態にも適用しうる。したがって、本発明は、記載された実施形態に限定されることはなく、特許請求の範囲によって定義される技術的思想に従った最も広い範囲とすべきである。 The above-described embodiments are described for the purpose of enabling the person having ordinary knowledge in the technical field to which the present invention belongs to implement the present invention. Various modifications of the above embodiment can be naturally made by those skilled in the art, and the technical idea of the present invention can be applied to other embodiments. Therefore, the present invention should not be limited to the described embodiments, but should be the widest scope according to the technical idea defined by the claims.
　本発明は、水中ポンプユニットを備えたポンプ装置に利用可能である。 The present invention can be used for a pump device provided with a submersible pump unit.
　１　　　水中ポンプユニット
　２　　　ポンプ
　３　　　電動機
　４　　　吸込管
　５　　　陸上ユニット
１０　　　制御ユニット
１１　　　配水管
１２　　　フロースイッチ
１３　　　圧力センサ
１５　　　圧力タンク
１６　　　電源
１８　　　排出管
１９　　　給水器具
２０，８０　　　制御部
２１　　　逆止弁
２２　　　インバータ
３３　　　空気抜き配管
３５　　　開閉弁
４６　　　設定部
４７　　　記憶部
４７ａ　　不揮発性記憶領域
４７ｂ　　揮発性記憶領域
４８　　　演算部
４９　　　表示部
５０　　　Ｉ／Ｏ部
５１　　　運転パネル
５２　　　リセットボタン
５３，６６　　　クリアボタン
６０　　　通信部
６１，６５，７０，７５　　　外部表示器
６７　　　制御部側アンテナ部
６８　　　集積回路
７１　　　表示器側アンテナ部
７２　　　表示部
７３　　　バッテリー
７４　　　データリーダー
７９　　　表示部
８２　　　設定部 DESCRIPTION OF SYMBOLS 1 Submersible pump unit 2 Pump 3 Electric motor 4 Suction pipe 5 Land unit 10 Control unit 11 Water distribution pipe 12 Flow switch 13 Pressure sensor 15 Pressure tank 16 Power supply 18 Drain pipe 19 Water supply apparatus 20,80 Control part 21 Check valve 22 Inverter 33 Air vent Piping 35 Open / close valve 46 Setting unit 47 Storage unit 47a Non-volatile storage area 47b Volatile storage area 48 Calculation unit 49 Display unit 50 I / O unit 51 Operation panel 52 Reset button 53, 66 Clear button 60 Communication unit 61, 65, 70 75 External display 67 Control unit side antenna unit 68 Integrated circuit 71 Display unit side antenna unit 72 Display unit 73 Battery 74 Data reader 79 Display unit 82 Setting unit

Claims (9)

  1. 　ポンプおよび電動機を備えた水中ポンプユニットと、
    　前記ポンプの吐出側圧力を測定する圧力センサと、
    　前記吐出側圧力の測定値と目標圧力値との差に基づいて、前記ポンプの回転速度を制御する制御部と、を備え、
    　前記制御部は、該制御部に電力が供給された後で、最初に前記ポンプを始動するときは、予め決定された増加レートにしたがって、前記目標圧力値を設定圧力値まで増加させるスロースタート制御を実行することを特徴とするポンプ装置。     A submersible pump unit equipped with a pump and an electric motor;
    A pressure sensor for measuring the discharge side pressure of the pump;
    A control unit for controlling the rotational speed of the pump based on the difference between the measured value of the discharge side pressure and the target pressure value;
    When the control unit starts the pump for the first time after power is supplied to the control unit, the control unit increases the target pressure value to a set pressure value according to a predetermined increase rate. The pump apparatus characterized by performing.
  2. 　前記増加レートは、前記目標圧力値が０から前記設定圧力値まで１０秒から６０秒かけて増加するレートであることを特徴とする請求項１に記載のポンプ装置。 The pump device according to claim 1, wherein the increase rate is a rate at which the target pressure value increases from 0 to the set pressure value over 10 to 60 seconds.
  3. 　前記増加レートは、前記制御部に電力が供給された後で、２回目以降に前記ポンプを始動するときの、前記ポンプの吐出側圧力の増加レートよりも小さいことを特徴とする請求項１または２に記載のポンプ装置。 The said increase rate is smaller than the increase rate of the discharge side pressure of the said pump when starting the said pump after the 2nd time after the electric power is supplied to the said control part. 2. The pump device according to 2.
  4. 　前記制御部は、前記目標圧力値が前記設定圧力値に到達した後は、前記目標圧力値を前記設定圧力値に維持することを特徴とする請求項１乃至３のいずれか一項に記載のポンプ装置。 4. The control unit according to claim 1, wherein the control unit maintains the target pressure value at the set pressure value after the target pressure value reaches the set pressure value. 5. Pump device.
  5. 　前記スロースタート制御が実行されていることを表示する表示器をさらに備えていることを特徴とする請求項１乃至４のいずれか一項に記載のポンプ装置。 The pump device according to any one of claims 1 to 4, further comprising a display for displaying that the slow start control is being executed.
  6. 　前記制御部は、外部表示器と有線通信または無線通信で接続することができることを特徴とする請求項１乃至５のいずれか一項に記載のポンプ装置。 The pump device according to any one of claims 1 to 5, wherein the control unit can be connected to an external display device by wired communication or wireless communication.
  7. 　前記制御部は、近距離無線通信（ＮＦＣ）によって前記外部表示器に接続できることを特徴とする請求項６に記載のポンプ装置。 The pump device according to claim 6, wherein the control unit can be connected to the external display by near field communication (NFC).
  8. 　前記制御部は、前記外部表示器からの電波を受信して該電波を電力に変換する制御部側アンテナ部と、前記電力によって駆動される集積回路および記憶部とを備えることを特徴とする請求項７に記載のポンプ装置。 The control unit includes a control unit side antenna unit that receives radio waves from the external display and converts the radio waves into electric power, and an integrated circuit and a storage unit that are driven by the electric power. Item 8. The pump device according to Item 7.
  9. 　前記制御部は、前記スロースタート制御の実行履歴を示すデータを前記記憶部に記憶し、
    　前記集積回路は、前記記憶部から前記データを読み取り、前記制御部側アンテナ部は前記データを前記外部表示器に送信することを特徴とする請求項８に記載のポンプ装置。     The control unit stores data indicating an execution history of the slow start control in the storage unit,
    9. The pump device according to claim 8, wherein the integrated circuit reads the data from the storage unit, and the control unit side antenna unit transmits the data to the external display.
PCT/JP2016/075654 2015-11-30 2016-09-01 Pump device WO2017094304A1 (en)

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