WO2016163255A1 - Dispositif d'alimentation en eau et procédé d'affichage d'avis de remplacement - Google Patents

Dispositif d'alimentation en eau et procédé d'affichage d'avis de remplacement Download PDF

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Publication number
WO2016163255A1
WO2016163255A1 PCT/JP2016/059867 JP2016059867W WO2016163255A1 WO 2016163255 A1 WO2016163255 A1 WO 2016163255A1 JP 2016059867 W JP2016059867 W JP 2016059867W WO 2016163255 A1 WO2016163255 A1 WO 2016163255A1
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WIPO (PCT)
Prior art keywords
water supply
control unit
supply device
pump
display
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PCT/JP2016/059867
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English (en)
Japanese (ja)
Inventor
一宏 金田
陽介 原田
誠 牛ノ濱
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株式会社 荏原製作所
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Publication of WO2016163255A1 publication Critical patent/WO2016163255A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring

Definitions

  • the present invention relates to a water supply apparatus that supplies water to a building, and more particularly, to a water supply apparatus that includes a display that displays replacement guidance for consumable parts of the water supply apparatus.
  • the present invention also relates to a method for guiding replacement of consumable parts of a water supply device.
  • a water supply device is generally provided with a display for displaying information such as the operation status of a pump.
  • the indicator of the water supply device is a simple indicator of 7-segment LED or indicator lamp, the pump operation status, discharge pressure, occurrence of failure, accumulated operation time for each pump, accumulated operation number for each pump, Displays only the minimum necessary information such as set values required for pump operation.
  • the water supply equipment is equipped with consumable parts that need to be replaced regularly.
  • a control unit such as a pressure tank, a pressure sensor, and a control board, and an inverter are consumable parts whose replacement time can be estimated based on the number of years since the start of use.
  • the bearing and the mechanical seal are consumable parts that can estimate the replacement time from not only the number of years since the start of use but also the accumulated operation time of the pump.
  • the replacement time of these consumable parts is important information for failure preventive maintenance, but it is not urgent, so it is not displayed on a simple display with a small amount of information that can be displayed. It is described in the book.
  • the replacement time differs depending on the consumable parts and there is a long replacement cycle, so there is a possibility that the replacement time may be forgotten.
  • Patent Document 1 describes a method of detecting an estimated life of an electric motor, but does not describe details of a display method when the electric motor reaches the estimated life.
  • a guide prompting the user to replace a consumable part of the water supply apparatus (hereinafter referred to as a consumable part replacement guide) is displayed in order to prevent failure of the consumable part. Therefore, the replacement guide for consumable parts is less urgent than an alarm for notifying a malfunction or abnormality of the water supply device. Therefore, it is desirable for the user to display a consumable parts replacement guide that is not confused with such an alarm display.
  • a water supply apparatus has a plurality of pumps, and is operating while rotating a plurality of pumps in order to save energy and prevent dead water. Pump rotation is also performed to equalize pump accumulated operation time, but at installation sites where water supply is irregular, such as in condominiums and commercial buildings, even if all pumps are operating normally, accumulated operation between pumps is performed. There may be differences in time. For this reason, in the case of a water supply apparatus having a plurality of pumps, there is a difference in replacement timing of consumable parts such as bearings and mechanical seals between the pumps. Also, at sites where water quality is poor, pumps were replaced before reaching the planned replacement time for the mechanical seal because solids were mixed in one of the pumps and the pump was damaged. Even in this case, since the use start time and the accumulated operation time for each pump are different, the replacement time of the mechanical seal is different.
  • Patent Document 2 describes a pump facility that displays a threshold value serving as a management index by graphing the accumulated operation time of the pump.
  • a threshold value serving as a management index by graphing the accumulated operation time of the pump.
  • the user reacts excessively to the difference in accumulated operation time between pumps, and some trouble occurs in the pump with a short accumulated operation time. Is misunderstood.
  • the water supply system is operating while rotating the pump, so the user can understand that the difference in accumulated operation time between pumps is within the appropriate range. Is necessary and very difficult.
  • the threshold value for replacement guidance for consumable parts which is failure preventive maintenance, is a value with some margin.
  • the user may become over-maintenance due to the danger that the replacement time will soon be reached before the threshold value is reached.
  • the main locations of water supply equipment are condominiums and commercial buildings. In condominiums and commercial buildings, it is rare that a full-time administrator who has expertise in water supply equipment manages the water supply equipment. In general, the user who confirms the display of the water supply device is a manager of a condominium or building without expertise.
  • the water supply device is a device that is directly connected to the lifeline, and the failure of the water supply device should be prevented in advance, and consumable parts should be replaced at an appropriate replacement time. Therefore, it is essential to provide a display method that allows the user to easily and reliably understand the replacement guide for consumable parts of the water supply device.
  • the present invention has been made in view of the above-described circumstances, and the consumable parts of the water supply device have reached the replacement time even for users who do not have expertise in the water supply device such as condominiums and building managers. It is an object of the present invention to provide a water supply apparatus and a replacement display guide method that can inform the user of the above in an easy-to-understand manner.
  • one aspect of the present invention is a water supply device for supplying water to a building, and includes a pump, an electric motor that drives the pump, and a usage period of consumable parts of the water supply device.
  • a control unit that measures the use period with a threshold value, and when the use period is equal to or greater than the threshold value, the use period has exceeded the threshold value, and the consumable component is And an indicator for indicating that the replacement time has been reached.
  • the display is an external display connected to the control unit by wired communication or wireless communication.
  • the external display is connected to the control unit by near field communication (NFC).
  • NFC near field communication
  • the external display includes a display-side antenna unit that transmits and receives radio waves, and the control unit receives the radio waves and converts the radio waves into electric power, An integrated circuit driven by the electric power and a storage unit are provided.
  • the control unit when the use period is equal to or greater than the threshold value, the control unit has exceeded the threshold value and the consumable part has reached a replacement time. Is stored in the storage unit as data, the integrated circuit reads the data from the storage unit, and the control unit side antenna unit transmits the data to the display unit antenna unit.
  • the control unit measures an energization time of the water supply device after the use of the consumable part is started as the use period. In a preferred aspect of the present invention, the control unit measures an accumulated operation time of the pump after the use of the consumable part is started as the use period. In a preferred aspect of the present invention, when the usage period is equal to or greater than the threshold value, the indicator indicates that the accumulated operation time of the pump has exceeded the threshold value, and that the consumable part is at a replacement time. It is characterized by displaying that it has been reached.
  • Another aspect of the present invention is a water supply device for supplying water to a building, wherein a pump, an electric motor that drives the pump, a usage period of consumable parts of the water supply device are measured, and the water supply device It is characterized by comprising an external display for displaying that the use period of the consumable part has exceeded a threshold value and that the expendable part has reached the replacement time, and a control unit that communicates by wire or wirelessly.
  • 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.
  • Another aspect of the present invention is a water supply device for supplying water to a building, and measures a use period of a pump, an electric motor that drives the pump, and consumable parts of the water supply device, and determines the use period.
  • a control unit that compares the threshold value with a threshold value, and when the usage period is equal to or greater than the threshold value, the control unit indicates that the usage period has exceeded the threshold value and that the consumable part is to be replaced.
  • the control unit can be connected to the external display device by near field communication (NFC).
  • NFC near field communication
  • 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 that reads the data from the storage unit.
  • the storage unit and the integrated circuit are driven by the electric power.
  • control unit side antenna unit transmits the data to the external display.
  • electric power is generated in the control unit by transmitting radio waves from the external display in a state where the external display is brought close to the control unit of the water supply device, and stored in the control unit.
  • a consumable part replacement guide is displayed on the external display, and the replacement guide is a notification indicating that the use period of the consumable part has exceeded a threshold and that the consumable part has reached the replacement time.
  • the indicator when the use period of the consumable part is equal to or greater than the threshold value, the indicator displays a notification indicating that the use period has exceeded the threshold value and that the expendable part has reached the replacement time. indicate. Therefore, the user can accurately and easily understand the reason why the consumable part should be replaced. As a result, replacement of consumable parts is promoted, and failure of the water supply device can be avoided.
  • FIG. 1 is a schematic diagram showing a water supply apparatus according to an embodiment.
  • the suction port of the water supply apparatus 1 is connected to the water pipe 4 via the introduction pipe 5.
  • a water supply pipe 7 is connected to the discharge port of the water supply apparatus 1, and the water supply pipe 7 communicates with a water supply device (for example, a faucet) on each floor of the building.
  • the water supply apparatus 1 increases the pressure of the water from the water pipe 4 and supplies the water to each water supply device of the building.
  • a water supply apparatus 1 in which a suction side of a pump is directly connected to a water pipe 4 via an introduction pipe 5 includes two pumps 2 and 2 and a motor (electric motor) 3 as a drive source for driving these pumps 2 and 2. 3, inverters 20, 20 as drive devices for driving the motors 3, 3 at a variable speed, a backflow prevention device 25 arranged on the suction side of the pumps 2, 2, and a suction side of the backflow prevention device 25 Pressure sensor (suction side pressure sensor) 21, check valves 22, 22 arranged on the discharge side of pumps 2, 2, flow switches 24, 24 arranged on the discharge side of check valves 22, 22, pressure A sensor (discharge side pressure sensor) 26 and a pressure tank 28 are provided. These components are accommodated in the cabinet 30 of the water supply apparatus 1. There is also a type of water supply device that does not include the cabinet 30.
  • No. 1 pump 2a and No. 2 pump 2b are simply referred to as pumps 2 and 2, and when one of the pumps is meant, it is simply a pump. Call it 2.
  • Reference numerals 3a and 3b in FIG. 1 mean a No. 1 motor 3a and a No. 2 motor 3b
  • reference numerals 24a and 24b mean a No. 1 flow switch 24a and a No. 2 flow switch 24b. Similarly, these are simply referred to as motors 3 and 3 and flow switches 24 and 24 unless they need to be distinguished from each other.
  • two sets of pumps 2 and 2, motors 3 and 3, check valves 22 and 22, and flow switches 24 and 24 are provided, and these are provided in parallel.
  • One set or three or more sets of pumps, motors, check valves, and flow switches may be provided.
  • a mechanical seal (not shown) which is attached to the main shaft portion of the pump 2 and plays a role of preventing the water in the pump 2 from leaking outside.
  • bearings (not shown) that serve to reduce friction and support a load when the main shaft of the motor 3 rotates.
  • a bypass pipe 8 for supplying water only with the pressure of the water pipe 4 is provided between the introduction pipe 5 and the water supply pipe 7.
  • the bypass pipe 8 is provided with a check valve 23.
  • the suction side of the pumps 2 and 2 is connected to the water pipe 4 as shown in FIG. 1, but in the water receiving tank type water supply device, the suction side of the pumps 2 and 2 is connected via the introduction pipe 5. Connected to the water tank.
  • the backflow prevention device 25 the suction side pressure sensor 21 and the bypass pipe 8 shown in FIG. 1 are not provided.
  • the check valves 22 and 22 are provided in the discharge pipes 32 and 32 connected to the discharge ports of the pumps 2 and 2, respectively. These check valves 22 and 22 are valves for preventing a back flow of water when the pumps 2 and 2 are stopped.
  • the flow switches 24 and 24 are flow rate detectors that detect that the flow rate of water flowing through the discharge pipes 32 and 32 has decreased to a predetermined value.
  • the pressure sensor 26 is a water pressure measuring device for measuring the discharge side pressure (that is, the back pressure applied to the water supply apparatus 1).
  • the pressure tank 28 is a pressure retainer for retaining the discharge side pressure while the pumps 2 and 2 are stopped.
  • the water supply apparatus 1 includes a control unit 40 that controls the water supply operation.
  • the inverters 20 and 20, the flow switches 24 and 24, the pressure sensor 21, and the pressure sensor 26 are connected to the control unit 40 via signal lines.
  • the control unit 40 issues a command to the inverter 20 to temporarily increase the operation speed of the pump 2 and accumulates pressure in the pressure tank 28. After that, the operation of the pump 2 is stopped. Such a stop operation of the pump 2 is called a small water amount stop.
  • the control unit 40 issues a command to the inverter 20 to start the operation of the pump 2.
  • the control unit 40 stores in advance a starting pressure that serves as a trigger for starting the pump 2.
  • the discharge side pressure of the pumps 2 and 2 decreases.
  • the control unit 40 starts one of the pumps 2 and 2.
  • the estimated terminal pressure constant control or the discharge pressure constant control is performed based on the output value of the pressure sensor 26.
  • the flow switch 24 detects that the flow rate of water from the pump 2 has decreased to a predetermined value, the flow switch 24 sends a detection signal to the control unit 40.
  • the control unit 40 receives this detection signal, issues a command to the inverter 20, increases the rotational speed of the pump 2 until the discharge side pressure reaches a predetermined stop pressure, and then stops the pump 2.
  • the water supply device 1 of the present embodiment includes two pumps 2 and 2, and when one of the two pumps 2 or 2 fails, the other pump 2 performs a backup operation.
  • the start order of the pumps 2 and 2 is changed, or the pump 2 in operation is operated for a preset time. Forcibly switching to the other pump 2.
  • the pump 2 is added or disconnected according to the amount of water supply for energy saving.
  • rotation and number control of the pumps 2 and 2 are performed according to various methods.
  • the water supply apparatus 1 is always energized, and as described above, it is used in an automatic operation mode in which the pumps 2 and 2 are controlled to start and stop and the rotational speed according to the use of water in the building.
  • this automatic operation mode is referred to as automatic operation of the water supply apparatus 1.
  • the operation of the pump indicates a state where the pump is actually driven by an electric motor.
  • FIG. 2 is a diagram showing details of the control unit 40.
  • the water supply apparatus 1 includes a control unit (control apparatus) 40 that controls the water supply operation, and a display 49 that displays operation information of the water supply apparatus 1.
  • the control unit 40 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 pumps 2 and 2 are 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 40, but the display device 49 may be arranged away from the control unit 40. 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 threshold value for determining whether or not each consumable part has reached the replacement time, and a use period of each consumable part.
  • the threshold value may be stored in advance in the storage unit 47, or may be input to the storage unit 47 through the setting unit 46.
  • the computing unit 48 measures the usage period of each consumable part, and the storage unit 47 stores the usage period.
  • a CPU is used as the calculation unit 48.
  • the indicator 49 functions as a human interface and displays replacement guidance for each consumable part of the water supply apparatus 1.
  • the use period of the consumable part corresponds to the energization time of the water supply device 1 after the use of the consumable part is started or the accumulated operation time of the pump 2 after the use of the consumable part is started.
  • the accumulated operation time of the pump 2 is the accumulated operation time of the pump 2 that operates with the consumable parts of the two pumps 2 and 2.
  • the mechanical seal of the pump 2 and the bearing of the motor 3 are consumable parts whose replacement time can be estimated from the energization time of the water supply device 1 and the accumulated operation time of the pump 2.
  • the bearing is ready for replacement after a certain period of time has elapsed since its start of use.
  • the electrical and electronic parts in the water supply apparatus 1 such as sensors and control devices are consumable parts that deteriorate due to energization. Such consumable parts come to be replaced when a certain period of time has elapsed since the start of use.
  • the pressure sensor 21, the pressure sensor 26, the flow switches 24 and 24, the inverters 20 and 20, and the control unit 40 are included. The power supply for these consumable parts is turned on and off at the same time as the control unit 40.
  • the energization time and the automatic operation time of the water supply device 1 are equal. 1 energization time and installation time are also equal.
  • the replacement time of the consumable parts described above can be determined by the energization time of the water supply apparatus 1 after the start of use of each consumable part. Therefore, as a consumable part in which the usage period of each part corresponds to the energization time of the water supply device 1, the pressure tank 28, the pressure sensor 21, the pressure sensor 26, the flow switches 24 and 24, the inverters 20 and 20, the control unit 40, The mechanical seal in the pump 2 and the bearing of each motor 3 are mentioned.
  • the threshold value indicating the replacement time is set for each consumable part.
  • the threshold value of the pressure tank 28 is 3 years
  • the threshold values of the pressure sensor 21 and the pressure sensor 26 are 5 years
  • the threshold value of the flow switch 24 is 3 years
  • the threshold value of the inverter 20 is 5 years
  • the threshold value of the part 40 is 5 years
  • the threshold value of the mechanical seal is 1 year
  • the replacement time of the bearing of the motor 3 is 3 years.
  • Examples of consumable parts that can determine the replacement time based on the accumulated operation time of the pumps 2 and 2 include mechanical seals in the pumps 2 and bearings of the motors 3.
  • the mechanical seal slides between the rotating ring and the stationary ring during the operation of the pump 2 to seal the shaft. Therefore, it is possible to estimate the replacement time of the mechanical seal from the accumulated operation time of the pump 2 from the start of use.
  • the bearing is a component for reducing the load and friction during rotation of the main shaft of the motor 3, the replacement time can be estimated from the accumulated operation time of the motor 3 from the start of use. Since the motor 3 drives the pump 2, the accumulated operation time of the motor 3 is equal to the accumulated operation time of the pump 2.
  • the threshold value indicating the mechanical seal replacement time based on the pump integrated operation time is 8000 hours
  • the threshold value indicating the bearing replacement time based on the pump integrated operation time is 10,000 hours.
  • the use period of the mechanical seal and the bearing corresponds to the energization time of the water supply device 1 after the start of use
  • the accumulated operation time of the mechanical seal and the bearing is the accumulated operation time of the pump 2 after the use is started. Equivalent to.
  • the calculation unit 48 measures the energization time of the water supply device 1 and / or the accumulated operation time of the pump 2 after the use of the consumable parts is started, and sends the measured energization time and / or accumulated operation time to the storage unit 47. .
  • the storage unit 47 stores the energization time of the water supply device 1 and / or the accumulated operation time of the pump 2 for each consumable part.
  • the calculation unit 48 compares the energization time with a threshold value and determines whether the energization time is equal to or greater than the threshold value. When the energization time is equal to or greater than the threshold value, the display unit 49 displays a notification indicating that the usage period of the consumable part has exceeded the threshold value and that the expendable part has reached the replacement time. Similarly, for a consumable part whose usage period is indicated by the accumulated operation time of the pump 2, the calculation unit 48 compares the accumulated operation time of the pump 2 with a threshold value, and the accumulated operation time of the pump 2 is equal to or greater than the threshold value. It is determined whether or not. When the accumulated operation time of the pump 2 is equal to or greater than the threshold value, the indicator 49 displays a notification indicating that the usage period of the consumable part has exceeded the threshold value and that the expendable part has reached the replacement time. .
  • FIG. 3 is a diagram showing details of the storage unit 47.
  • the storage unit 47 includes a threshold value storage area 47 a that stores a threshold value of each consumable part, and a use period storage area that stores an energization time and an accumulated operation time indicating the use period of the consumable part. 47b.
  • the threshold storage area 47 a is a first threshold value (hereinafter referred to as a first threshold value for a mechanical seal) indicating the replacement timing of the mechanical seal estimated from the energization time of the water supply device 1.
  • a second threshold value indicating the replacement time of the mechanical seal estimated from the accumulated operation time of the pump 2 (hereinafter referred to as a second threshold value for the mechanical seal), and estimated from the energization time of the water supply device 1
  • the second threshold indicating the bearing replacement time estimated from the first threshold value (hereinafter referred to as the first threshold value for the bearing) and the accumulated operation time of the pump 2.
  • the threshold value (hereinafter referred to as the second threshold value for the bearing), the threshold value indicating the replacement time of the flow switch 24 (hereinafter referred to as the threshold value for the flow switch), and the replacement time of the pressure tank 28 Indicating threshold (hereinafter referred to as pressure tank) ),
  • a threshold value indicating the replacement time of the pressure sensors 21 and 26 (hereinafter referred to as a threshold value for the pressure sensor), and a threshold value indicating the replacement time of the control unit 40 (hereinafter referred to as a threshold value).
  • a threshold value for each type of consumable part such as a threshold value for a control unit) is stored.
  • the use period storage area 47b is configured to store the energization time of the water supply device 1 after the use of each consumable part is started and the accumulated operation time of each pump 2 after the use of each consumable part is started. ing.
  • the use period storage area 47b includes the energization time of the water supply device 1 from the start of use of the mechanical seal of the No. 1 pump 2a and the water supply device 1 from the start of use of the mechanical seal of the No. 2 pump 2b.
  • the energization time is stored individually.
  • the usage period storage area 47b is the accumulated operation time of the No. 1 pump 2a from the start of use of the mechanical seal of the No. 1 pump 2a, and the accumulated operation of the No. 2 pump 2b from the start of use of the mechanical seal of the No. 2 pump 2b. Memorize time separately.
  • the usage period storage area 47b individually stores the energization time of the water supply apparatus 1 from the start of use of the bearing of the No. 1 motor 3a and the energization time of the water supply apparatus 1 from the start of use of the bearing of the No. 2 motor 3b. Further, the usage period storage area 47b includes an accumulated operation time of the No. 1 pump 2a from the start of use of the bearing of the No. 1 motor 3a, and an accumulated operation time of the No. 2 pump 2b from the start of use of the bearing of the No. 2 motor 3b. Are stored separately.
  • the use period storage area 47b includes the energization time of the water supply apparatus 1 from the start of use of the No. 1 flow switch 24a, the energization time of the water supply apparatus 1 from the start of use of the No. 1 flow switch 24b, and the use of the pressure tank 28.
  • the energization time of the water supply apparatus 1 from the use start of the control part 40 is memorize
  • FIG. 4 is a flowchart for displaying a replacement guide for consumable parts indicating that the mechanical seal of the No. 1 pump 2a has reached the replacement time.
  • the first use period shown in FIG. 4 is periodically stored in the storage unit 47 as the energization time of the water supply apparatus 1 from the start of use of the mechanical seal of the No. 1 pump 2a of FIG.
  • the second use period is periodically stored in the storage unit 47 as the accumulated operation time of the No. 1 pump 2a from the start of use of the mechanical seal of the No. 1 pump 2a in FIG.
  • Step 1 is started immediately after the water supply apparatus 1 is installed at the site and the automatic operation of the water supply apparatus 1 is started.
  • the value of the first usage period and the value of the second usage period in Step 1 are 0.
  • the calculation unit 48 When the operation command value output from the control unit 40 to the inverter 20 is equal to or higher than the predetermined start rotational speed (step 3), the calculation unit 48 counts the second usage period. (Step 4). When the operation command value is lower than the predetermined starting rotational speed, the calculation unit 48 does not count the second usage period.
  • the replacement time of the mechanical seal is one year for the energization time of the water supply device 1 or 8000 hours for the total operation time of the No. 1 pump 2a.
  • the threshold value storage area 47a includes a first threshold value for mechanical seal (one year in energization time) and a second threshold value for mechanical seal (1) as threshold values indicating the replacement timing of the mechanical seal. 8000 hours as the accumulated operation time of the No. 2 pump).
  • the calculation unit 48 compares the first use period with the first threshold value for mechanical seal, and determines whether or not the first use period is equal to or greater than the first threshold value for mechanical seal. (Step 5). If the first period of use is equal to or greater than the first threshold value for the mechanical seal, the indicator 49 indicates that the period of use of the mechanical seal of the No. 1 pump has exceeded one year. Is displayed (step 6).
  • the calculation unit 48 compares the second usage period with the second threshold value for the mechanical seal, and the second usage period is the second threshold value for the mechanical seal. It is determined whether or not it is equal to or greater than the value (step 7).
  • the indicator 49 indicates that “No. 1 pump operation time has exceeded 8000 hours. Is displayed (step 8).
  • FIG. 5 is a diagram showing a display screen of the display device 49.
  • the indicator 49 displays the operating states of the No. 1 pump 2a and the No. 2 pump 2b, and further displays notification 1 or notification 2 as a consumable part replacement guide.
  • Notification 1 is a display saying “The mechanical seal of the No. 1 pump has been used for more than one year. It is time to replace the mechanical seal of the No. 1 pump.” The operation time of the pump exceeded 8000 hours. It is time to replace the mechanical seal of the No. 1 pump.
  • the indicator 49 displays the current value of the use period of the consumable part (that is, the energization time of the water supply device 1 or the accumulated operation time of the pump 2a or the pump 2b measured for the consumable part) as the replacement guide of the consumable part.
  • the usage period which is the reason (foundation) for replacing the consumable parts, exceeds the threshold of replacement time, and the consumable parts that need to be replaced are clearly displayed. If the current value of the use period of the consumable part is displayed as the replacement guide for the consumable part, the user can easily notice the difference in the current value of the use period for each consumable part. For example, as described above, as a feature of the water supply device, it is difficult to equalize the integrated operation time of the No.
  • the control unit 40 measures the first usage period and the second usage period in parallel. Therefore, the second usage period may reach the second threshold value for the mechanical seal after the first usage period reaches the first threshold value for the mechanical seal.
  • the mechanical seal of the No. 1 pump 2a of the notification 1 and the mechanical seal of the No. 1 pump 2a of the notification 2 exist individually, and each replacement guide The user may be misunderstood that is displayed. Therefore, only notification 1 may be displayed, or notification 2 may be additionally displayed.
  • the display of such replacement guidance allows the user to accurately recognize the consumable parts that have reached the time for replacement, and at the same time grasp the replacement frequency of the consumable parts at the same level as the instruction manual.
  • the frequency of maintenance varies depending on the user who uses the water supply device. Some users want to avoid water outflows and perform regular maintenance before consumable parts malfunction. To reduce maintenance costs as much as possible, continue to use consumable parts until an alarm is issued. Some users. As long as the display is as described above, regardless of the importance of maintenance, which is different for each user, any user can be exchanged with the same display.
  • the user can delete notification 1 and notification 2 by pressing the clear button 53 (see FIG. 2) on the setting unit 46 (step 9). Yes (step 10).
  • Step 11 the maintenance staff pushes the reset button 52 (see FIG. 2) on the setting unit 46 to reset the first use period and the second use period to zero.
  • Step 12 the mechanical seal of the No. 1 pump 2a may be replaced even when the second usage period is smaller than the second threshold value for the mechanical seal.
  • the first use period and the second use period are reset to 0 by pressing the reset button 52 shown in FIG.
  • these reset operations may be provided with operation restrictions such as passwords.
  • the user may be restricted such that the clear button 53 can be operated by both the user and the maintenance staff, and the reset button 52 cannot be operated by the user and can be operated only by the maintenance staff.
  • the control unit 40 may automatically recognize that the consumable part has been replaced. Specifically, an identification device such as an IC chip having an identification number is embedded in each consumable part in advance. A different identification device is attached to every consumable part. For example, an identification device different from the bearing is attached to the mechanical seal, and an identification device different from the mechanical seal as a spare part is attached to the mechanical seal currently used. When the mechanical seal is replaced, the control unit 40 recognizes a different identification device and determines that the mechanical seal has been replaced. For the consumable parts other than the mechanical seal, the controller 40 can automatically recognize that the consumable parts have been replaced by the same method.
  • an identification device such as an IC chip having an identification number is embedded in each consumable part in advance. A different identification device is attached to every consumable part. For example, an identification device different from the bearing is attached to the mechanical seal, and an identification device different from the mechanical seal as a spare part is attached to the mechanical seal currently used.
  • the control unit 40 recognizes a different identification device and determines that the mechanical seal has been replaced.
  • control unit 40 is a consumable part, and the replacement time is reached 5 years after the start of use of the control unit 40.
  • the control unit 40 is replaced, data relating to the energization time and the accumulated operation time of each pump 2a, 2b stored in the use period storage area 47b is inherited by the storage unit of the new control unit.
  • FIG. 6 is a diagram showing the storage unit 47 further provided with a replacement number storage area 47c.
  • the threshold storage area 47a and the usage period storage area 47b are shown in a simplified manner.
  • the storage unit 47 may further include a replacement count storage area 47c that stores the replacement count of consumable parts.
  • the computing unit 48 adds 1 to the current replacement number of the consumable part to update the replacement number, and the updated replacement number of the consumable part is stored in the replacement number storage area 47c.
  • the number of replacements of the mechanical seal of the No. 1 pump 2a is added by “1” (see step 12).
  • the replacement number storage area 47c includes the number of replacements of the mechanical seal of the No. 1 pump 2a, the number of replacements of the mechanical seal of the No. 2 pump 2b, the number of replacements of the bearing of the No. 1 motor 3a, the number of replacements of the bearing of the No. 2 motor 3b, No. 2 flow switch 24a replacement number, No. 2 flow switch 24b replacement number, pressure tank 28 replacement number, pressure sensor (suction side pressure sensor) 21 replacement number, pressure sensor (discharge side pressure sensor) 26 replacement number, And the number of exchanges of the control unit 40 is stored.
  • the indicator 49 may be configured to further display the number of replacements of the consumable parts of the water supply device 1.
  • the display unit 49 displays the consumable part replacement guide
  • the display unit 49 additionally displays the number of consumable part replacements. For example, when the mechanical seal of the No. 1 pump 2a has already been replaced once, the display unit 49 additionally displays a notification “It is the second replacement time for the mechanical seal of the No. 1 pump”.
  • the display of the replacement guide for the mechanical seal of the No. 1 pump 2a has been described, but a plurality of other consumable parts present in the water supply apparatus 1 can also have the same display form.
  • the display method of the replacement guidance for the pressure tank 28 will be described with reference to FIG.
  • the replacement guide for consumable parts has been made common within the water supply device 1, whether it is a plurality of consumable parts or a single consumable part. It is desirable to display it as a template.
  • FIG. 7 is a flowchart for displaying consumable parts replacement guidance indicating that the pressure tank 28 has reached the replacement time.
  • the third use period shown in FIG. 7 is periodically stored in the storage unit 47 as the energization time of the water supply apparatus 1 from the start of use of the pressure tank 28.
  • the calculation unit 48 counts the third usage period (step 2).
  • Step 1 is started immediately after the water supply apparatus 1 is installed at the site and the automatic operation of the water supply apparatus 1 is started.
  • the value of the third usage period in Step 1 is 0.
  • the replacement time of the pressure tank 28 is determined based on the energization time of the water supply apparatus 1 measured after the use of the pressure tank 28 is started.
  • the threshold value for the pressure tank is 3 years.
  • the calculation unit 48 compares the third use period with the threshold value for the pressure tank, and determines whether or not the third use period is equal to or greater than the threshold value for the pressure tank (step 3). If the third period of use is equal to or greater than the threshold value for the pressure tank, the display unit 49 will indicate “Consumer replacement period has exceeded 3 years. It is time to replace the pressure tank. Is displayed (step 4).
  • the user can delete the notification 3 (step 6) by pressing the clear button 53 on the setting unit 46 (step 5).
  • the maintenance staff pushes the reset button 52 on the setting unit 46 to reset the third usage period to 0 (step 8).
  • the control unit 40 recognizes that the pressure tank 28 has been replaced, the calculation unit 48 adds 1 to the current number of replacements of the pressure tank 28 to update the number of replacements of the pressure tank 28, and the updated number of replacements of the pressure tank 28. May be stored in the replacement number storage area 47c.
  • the indicator 49 may additionally display the number of replacements of the pressure tank 28. In step 3 described above, the pressure tank 28 may be replaced even when the third usage period is smaller than the threshold value for the pressure tank.
  • the third use period is reset to 0 by pressing the reset button 52 shown in FIG.
  • these reset operations may be provided with operation restrictions such as passwords.
  • the reset button 52 may be provided with user restrictions such that the user cannot operate and only the maintenance staff can operate.
  • consumable parts replacement guidance may be displayed so that only the maintenance staff can check.
  • the threshold value indicating the replacement time of the consumable part may be changeable. In this case, an upper limit value and a lower limit value of the threshold value may be provided.
  • the display unit 49 displays the replacement guidance for only one consumable part, but two or more consumable parts may reach the replacement time at the same time. In view of this, two or more consumable parts replacement guidance may be displayed on the display unit 49 at the same time.
  • FIG. 8 is a view showing another embodiment of the water supply apparatus 1.
  • an external display device 61 is further provided.
  • the control unit 40 further includes a communication unit 60.
  • the control unit 40 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 who is unfamiliar with the water supply device does not misunderstand by displaying the replacement guide for consumable parts on the external display 61. It is possible to recognize the replacement time of consumable parts.
  • FIG. 9 is a diagram showing a display screen of the external display device 61.
  • the energizing time of the water supply apparatus 1 and / or the accumulated operation time of the pump 2 indicating the use period of the consumable parts are equal to or greater than the threshold value, as shown in FIG. To do. That is, the external display 61 displays that the use period of the consumable part has exceeded the threshold and that the expendable part has reached the replacement time.
  • the display of the consumable parts replacement guidance allows the user or maintenance staff to confirm that the consumable parts have reached the replacement time in a place other than the front of the display 49 of the water supply apparatus 1.
  • the water supply apparatus 1 may be installed outdoors or in places where it is difficult to operate.
  • the display surface is installed near the ground or at a high place.
  • the display 49 is exposed to direct sunlight and the visibility of the replacement guide for consumable parts becomes very poor.
  • the installation location of the external display 61 can be set at an optimum location for each site, or can be operated by hand, so that it can be installed at a location where it is easy to check and operate, or where direct sunlight is avoided. Exchange information can be displayed.
  • the external display 61 may additionally display the number of consumable parts replacement.
  • the water supply apparatus 1 may be installed in an electrically noisy environment such as a machine room or a pump room.
  • the display unit 49 incorporated in the water supply apparatus 1 a display unit composed of a 7-segment LED, a display lamp, a mechanical press button, etc. that are more resistant to electrical noise than a liquid crystal display or a touch panel. 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 display 49 is the minimum display necessary for the operation of the water supply device 1. Therefore, the water supply apparatus 1 can be installed in an environment with a lot of electrical noise.
  • the display unit 49 displays the minimum display operations necessary for the water supply device 1, for example, alarms and operations of the pumps 2 and 2, and the user can use the external display 61 with a large amount of information to replace consumable parts with low urgency. It is possible to provide an easily understandable display. Furthermore, if a general-purpose terminal device such as a smart phone, a mobile phone, a personal computer, or a tablet is used as the external display 61, the user can display replacement information for consumable parts using dedicated application software. It is possible to provide a display of consumable parts replacement guidance according to the user's level by preparing and using multiple application software.
  • FIG. 10 is a view showing still another embodiment of the water supply apparatus 1.
  • the display unit 49 is not provided in the control unit 40, and only an external display (high function display) 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 water supply apparatus 1, the cost of the entire water supply apparatus 1 can be further reduced.
  • FIG. 11 is a view showing still another embodiment of the water supply apparatus 1.
  • 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 40 determines whether or not the usage period of the consumable part is equal to or greater than the threshold value, and the external display 65 periodically communicates with the control unit 40 through the public line, and the usage period of the consumable part is the threshold.
  • the control unit 40 is inquired whether the value is equal to or greater than the value. If the usage period of the consumable part is equal to or greater than the threshold value, the external display 65 displays a consumable part replacement guide. Specifically, the external display 65 displays that the use period of the consumable part has exceeded a threshold value and that the expendable part has reached the replacement time.
  • the external display 65 may additionally display the number of consumable parts replacement.
  • the control unit 40 of the present embodiment does not include the clear button 53 illustrated in FIG. 2, and instead, the external display device 65 includes a clear button 66 as illustrated in FIG. 11.
  • the replacement guide displayed on the external display 65 is deleted.
  • the reset button 52 of the control unit 40 is pushed after the consumable parts are replaced, the energizing time of the water supply apparatus 1 or the accumulated operation time of the pump 2 indicating the usage period of the consumable parts is reset to zero.
  • FIG. 12 is a view showing still another embodiment of the water supply apparatus 1.
  • the basic configuration of the control unit 40 of the present embodiment is the same as the configuration of the control unit 40 of the embodiment shown in FIG. 10, but the control unit 40 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 threshold storage area 47a, a usage period storage area 47b, and a replacement count storage area 47c (see FIGS. 3 and 6).
  • the control part 40 of this embodiment is not provided with the indicator 49, you may provide the indicator 49 in the control part 40.
  • 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, replacement of consumable parts).
  • a display 72 for displaying guidance, operating states of pumps 2 and 2, discharge pressure, and the like, 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 can be reduced, so that the cost of the water supply device can be reduced.
  • multiple users can display the replacement guide for consumable parts of the water supply device on each general-purpose terminal device, even for users who do not have expertise in water supply devices such as condominiums and building managers, It is possible to provide an inexpensive water supply apparatus that can easily notify that the consumable part of the water supply apparatus has reached the replacement time.
  • the control unit 40 measures the energization time of the water supply device 1 and / or the accumulated operation time of the pump 2 that indicates the usage period of each consumable component, and stores these in the storage unit 47. To do.
  • the control unit 40 determines whether or not the energization time or the accumulated operation time stored in the storage unit 47 is equal to or greater than the threshold value, and stores the determination result in the storage unit 47 as data. Furthermore, when the energization time or the accumulated operation time is equal to or greater than the threshold value, the control unit 40 stores the display content of the consumable part replacement guidance as data in the storage unit 47.
  • the display contents of the consumable parts replacement guidance are notifications indicating that the usage period of the consumable parts has exceeded the threshold and that the consumable parts have reached the replacement time, as in the above-described embodiment.
  • the external display unit 70 is connected to the control unit 40 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 40, 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 consumable parts replacement guidance.
  • 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 40 of this embodiment does not include a clear button, the control unit 40 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 40 used mainly by maintenance personnel.
  • wireless communication is performed between the external display 70 and the control unit 40, and data including the display content of the consumable parts replacement guidance stored in the storage unit 47 is externally transmitted from the control unit 40. It is sent to the display device 70.
  • 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. be able to. Therefore, even when power is not supplied to the control unit 40 during maintenance of the water supply device 1, the external display device 70 acquires data including consumable parts replacement guidance from the storage unit 47 of the control unit 40, and Data can be displayed.
  • control unit 40 fails, it must be replaced with a new control unit 40.
  • the energization time for each consumable part stored in the use period storage area 47b of the old control unit 40 is used.
  • / or data related to the accumulated operation time of the pumps 2 and 2 can be passed on to the storage unit 47 of the new control unit 40.
  • the data in the storage unit 47 of the old control unit 40 is displayed on the external display 70, and the maintenance person inputs from the operation unit of the new control unit 40 while confirming the display.
  • the storage unit 47 may store the data, or the data of the old control unit 40 may be acquired by the external display 70 and communicated from the external display 70 to the storage unit 47 of the new control unit 40. May be written. Even if the control unit 40 fails in a state where the power is not turned on, the usage period storage area 47b can be inherited by the storage unit 47 of the new control unit 40, so that the data of the usage period for each consumable part is not lost. This is because, even after the water supply apparatus 1 starts automatic operation in the new control unit 40, the replacement guide for each consumable part can be displayed at the timing when the use period of each consumable part exceeds each threshold value. Means.
  • the water supply apparatus 1 requires regular maintenance. Usually, the maintenance of the water supply apparatus 1 is performed in a state where the power supply of the water supply apparatus 1 is turned off. By exchanging consumable parts during maintenance of the water supply apparatus 1, not only can the efficiency of the work be realized, but also the operation stop time of the water supply apparatus 1 can be shortened. In particular, since the water supply apparatus 1 is a facility that functions as a part of a lifeline, it is desirable to shorten the operation stop time of the water supply apparatus 1 as much as possible.
  • the present embodiment even when power is not supplied to the water supply apparatus 1, information including replacement guidance for consumable parts from the storage unit 47 can be obtained by merely bringing the external display 70 close to the control unit 40 by the user or maintenance personnel. Is possible to get. Therefore, the user or the maintenance staff can confirm whether or not the consumable parts need to be replaced during the maintenance of the water supply apparatus 1 through the external display 70, and can replace the consumable parts as necessary.
  • NFC Near field communication
  • the user or the maintenance staff needs to bring the external display 70 close to the control unit 40.
  • communication is possible only at a short distance of the water supply apparatus for which replacement guidance is to be displayed. Therefore, an unintended replacement guide for another water supply apparatus often displayed by wireless communication is displayed. It is possible to prevent the erroneous display of being displayed.
  • FIG. 13 is a view showing still another embodiment of the water supply apparatus 1.
  • the control unit 40 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 40 may include a display device 49.
  • the storage unit 77 has the configuration shown in FIG.
  • the calculation unit 48 of the control unit 40 measures the energization time of the water supply apparatus 1 and the accumulated operation time of the pumps 2 and 2 that indicate the usage period of each consumable part.
  • the measured energization time and accumulated operation time are stored in the storage unit 47, sent to the external display unit 75 via the communication units 60 and 76, and then stored in the storage unit 77 in the external display unit 75.
  • the calculation unit 78 of the external display 75 compares the energization time or the accumulated operation time indicating the usage period of the consumable part with the threshold value in the storage unit 77.
  • the display unit 79 displays a consumable part replacement guide. That is, the display unit 79 displays that the use period of the consumable part has exceeded the threshold value and that the expendable part has reached the replacement time.
  • the display unit 79 may additionally display the number of consumable parts replacement.
  • FIG. 14 is a view showing still another embodiment of the water supply apparatus 1.
  • the control unit 40 is not provided with a display, and instead, the external display 75 is provided with a display unit 79 and a setting unit 82.
  • the replacement guidance display is erased, the energization time and the accumulated operation time are reset, and other various setting values are input through the setting unit 82 of the external display 75.
  • the use period (energization time and / or integrated operation time) for each consumable part is used as the integrated value compared with the threshold value of the consumable part replacement guidance.
  • the replacement guide for consumable parts indicates that the count has exceeded the threshold, and when the consumable parts are to be replaced. It is assumed that the display unit displays that the value has been reached.
  • An example of a consumable part that can use the count value of the number of times of small water stoppage as the integrated value is the pressure tank 28.
  • the pressure tank 28 is mentioned as an example of the consumable part which can use the count value of the total integration start (operation) frequency of all the pumps as the integrated value.
  • consumable parts that can use the count value of the cumulative start (operation) count for each pump as the integrated value include flow switches 24 and 24, check valves 22 and 22, bearings, and mechanical seals.
  • the other parts mentioned above count some integrated values and compare the integrated value with an arbitrary threshold value, so that the parts whose life can be estimated shall be displayed in the same way as consumable parts replacement guidance. Can do. That is, it clearly displays that the consumable part has exceeded the replacement time threshold and the consumable part that needs to be replaced. Thereby, even a user unfamiliar with the operation of the water supply apparatus 1 can recognize the replacement time of the consumable parts.
  • the present invention can be used for a water supply apparatus provided with a display for displaying a replacement guide for consumable parts of the water supply apparatus.
  • the present invention can also be used in a method for guiding replacement of consumable parts of a water supply device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

La présente invention concerne un dispositif d'alimentation en eau doté d'une unité d'affichage qui affiche un avis de remplacement concernant les éléments consommables du dispositif d'alimentation en eau. Le dispositif d'alimentation en eau (1) selon l'invention comprend : une pompe (2) ; un moteur électrique (3) qui entraîne la pompe (2) ; une unité de commande (40) qui mesure le temps d'utilisation d'un élément consommable du dispositif d'alimentation en eau (1) et compare le temps d'utilisation à un seuil ; et une unité d'affichage (49), qui, si le temps d'utilisation est supérieur ou égal au seuil, affiche une notification indiquant que le temps d'utilisation a dépassé le seuil et que le moment est venu de remplacer l'élément consommable.
PCT/JP2016/059867 2015-04-06 2016-03-28 Dispositif d'alimentation en eau et procédé d'affichage d'avis de remplacement WO2016163255A1 (fr)

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JP2015078081A JP6625818B2 (ja) 2015-04-06 2015-04-06 給水装置および交換表示案内方法

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1137056A (ja) * 1997-07-18 1999-02-09 Noritz Corp メカニカルシールの寿命判定方法
JP2002023839A (ja) * 2000-07-13 2002-01-25 Hitachi Ltd 機器管理システムと機器管理方法及び監視装置、データベース装置とデータベースクライアント装置並びに記録媒体
JP2006219988A (ja) * 2005-02-08 2006-08-24 Ebara Corp ポンプ装置及びポンプ装置用携帯端末
JP2007213311A (ja) * 2006-02-09 2007-08-23 Hitachi Ltd プラントの予防保全支援システム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0658264A (ja) * 1992-08-04 1994-03-01 Hitachi Ltd 自動給水装置
JP2004011484A (ja) * 2002-06-05 2004-01-15 Matsushita Electric Ind Co Ltd 給水加圧装置
JP5713613B2 (ja) * 2010-09-10 2015-05-07 株式会社東芝 巡視点検支援システム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1137056A (ja) * 1997-07-18 1999-02-09 Noritz Corp メカニカルシールの寿命判定方法
JP2002023839A (ja) * 2000-07-13 2002-01-25 Hitachi Ltd 機器管理システムと機器管理方法及び監視装置、データベース装置とデータベースクライアント装置並びに記録媒体
JP2006219988A (ja) * 2005-02-08 2006-08-24 Ebara Corp ポンプ装置及びポンプ装置用携帯端末
JP2007213311A (ja) * 2006-02-09 2007-08-23 Hitachi Ltd プラントの予防保全支援システム

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