WO2020107081A1 - Self-powered data logger for water supply and sewerage systems - Google Patents

Self-powered data logger for water supply and sewerage systems Download PDF

Info

Publication number
WO2020107081A1
WO2020107081A1 PCT/BG2018/000045 BG2018000045W WO2020107081A1 WO 2020107081 A1 WO2020107081 A1 WO 2020107081A1 BG 2018000045 W BG2018000045 W BG 2018000045W WO 2020107081 A1 WO2020107081 A1 WO 2020107081A1
Authority
WO
WIPO (PCT)
Prior art keywords
regulator
metal housing
alternating current
telemeter
tubular metal
Prior art date
Application number
PCT/BG2018/000045
Other languages
French (fr)
Inventor
Dimitar Vasilev IVANOV
Original Assignee
Qubiqo Limited Liability Company
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 Qubiqo Limited Liability Company filed Critical Qubiqo Limited Liability Company
Publication of WO2020107081A1 publication Critical patent/WO2020107081A1/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1415—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with a generator driven by a prime mover other than the motor of a vehicle
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
    • E03B7/071—Arrangement of safety devices in domestic pipe systems, e.g. devices for automatic shut-off
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F2201/00—Details, devices or methods not otherwise provided for
    • E03F2201/20—Measuring flow in sewer systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2209/00—Arrangements in telecontrol or telemetry systems
    • H04Q2209/80—Arrangements in the sub-station, i.e. sensing device
    • H04Q2209/88—Providing power supply at the sub-station
    • H04Q2209/886—Providing power supply at the sub-station using energy harvesting, e.g. solar, wind or mechanical
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/15—Leakage reduction or detection in water storage or distribution

Definitions

  • the present invention relates to an energy-independent logger, which will ⁇ be use in the field of water supply and sewerage systems and facilities, and in particular for monitoring mains and sewerage networks.
  • the water supply of settlements, industrial and agricultural sites is realized by existing water supply system. It is a set of engineering facilities that produce, purify, transport and delivers to the consumers the necessary water quantities.
  • Water abstraction sources are springs, underground waters, rivers, dams, lakes and seawater after desalination. The natural water extracted from these sources contains some impurities, which are removed before it reaches the end user.
  • the modem water supply system needs more effective monitoring and management with the increase in production costs for the supply of drinking, industrial and irrigation water to the end-user and its growing importance as an asset.
  • Leakages in the water supply system are among the main causes of huge water losses across the mains water supply.
  • the presence of leaks in the system can also lead to contamination of water in mains water supply, to cause damage to buildings and facilities, and so on.
  • Continuous mains network monitoring is required to both detect leaks in a timely manner and reduce water losses and to regulate pressure and prevent accidents in worn-out water supply and sewerage networks.
  • Acoustic or correlation units most commonly used in the practice of detecting leakage and failures in mains network.
  • the well-known data collection units as data loggers need batteries and have the complex implementation.
  • U.S. Patent No. WO/1996/022508, published on 25.07.1996, relates to a wheel mounted data logger.
  • the document discloses an acoustic sensor that is excited by the noise produced by the running engine of a vehicle or machine and a travelled distance internal sensor. Both sensors are connected to a microcontroller and are all housed together with a power battery in a single smal l box as to create a unit capable of recording in its internal memory the status of the engine, the distance travelled and the top speed developed for each one of the programmed periods of time.
  • U.S. Patent No. 20170350100 published on 07.12.2017, relates to an intelligent standpipe for drawing water from a mains water supply.
  • the standpipe includes an inlet having a first coupling configured to enable the standpipe to be connected to a hydrant outlet of the mains water supply and an outlet having a second coupling configured to enable a water delivery hose to be connected to the standpipe.
  • a flow meter measures a volume of water flowing from the inlet to the outlet and a data logger is connected to the flow meter and records the volume of water measured.
  • the GPS module determines the location of the standpipe when the flow meter detects the water flow and a wireless communication module transmits the recorded volume of water and corresponding GPS location to a central monitoring facility.
  • An object of the invention is to provide an energy-independent logger with an autonomous power supply and for real-time monitoring of physical, chemical and other indicators of the mains water supply.
  • the energy-independent logger comprising a reversible axial turbine coupled directly to the shaft of alternating current generator all mounted together in a tubular metal housing.
  • the alternating current generator is attached by ribs to the inside of the tubular metal housing with an opening being provided in one of the ribs and respectively in the metal housing, through which the cables of the alternating current generator pass through to a regulator.
  • the regulator is connected to a rechargeable battery to power a telemeter with a built-in 3G modem.
  • the regulator, the battery, and telemeter are housed in a second housing attached to the tubular metal housing.
  • the regulator includes a rectifier unit of three-phase alternating voltage of the alternating current generator and an electronic charge regulator of the battery.
  • An advantage of the provided energy-independent logger is that the specially designed built-in low pressure drop reversible turbine will produce electrical energy in amount needed to supply a combination of water, pressure, and level measuring instruments and thanks to the low head losses will not hinder the normal operation of the water supply system.
  • the logger allows remote measurement, control and balancing of the water cycle.
  • the present invention is shown in the enclosed Figure 1, which is a schematic diagram of an energy-independent logger.
  • the provided energy-independent logger shown in Figure 1 , includes a reversible axial turbine 1 coupled directly to shaft 2 of an alternating current generator 3 all mounted together in a tubular metal housing 6.
  • the tubular metal housing 6 is made of welded flanges, cones and tubular elements with a mechanically machined slot for mounting the generator 3.
  • the reversible axial turbine 1 has a low efficiency and processes a small part of the water flow energy, and the turbine 1 being able to work with a water flow in both directions of the tubular housing 6.
  • Actuating elements of the axial turbine 1 are propellers fixed to a hub.
  • the outer diameter of the propeller is 0.5-2 mm smaller than the diameter of the tubular metal housing 6 in which the turbine 1 is mounted.
  • the hub of reversible axial turbine 1 is coupled directly to the shaft 2 of the generator 3 and it is the operating device providing a rotary motion to generate an electric current by the generator 3.
  • the shaft 2 is made of metal and imparts the rotary motion from the turbine 1 to the rotor of the generator 3.
  • the alternating current generator 3 has permanent magnets, an encapsulated rotor and a wound stator.
  • the rotor of the generator 3 is mounted on rolling bearings working in an aqueous medium. The aim of the design is to ensure the tightness of the windings of the generator 3 without the need to install seals.
  • the alternating current generator 3 is attached by ribs to the inside of the tubular metal casing 6 with an opening being provided in one of the ribs and the metal housing 6 respectively, through which the cables of the alternating current generator 3 pass through to the regulator 4.
  • the cables from the terminals of the generator 3 are hermetically sealed.
  • the regulator 4 is connected to a rechargeable battery 5 for powering a telemeter 8 with a built-in 3G modem.
  • the regulator 4, the battery 5 and the telemeter 8 are housed in a second housing 7 attached to the tubular metal housing 6.
  • the regulator 4 includes a rectifier unit of three-phase alternating voltage of the generator 3 and an electronic charge regulator of the battery 5 for supplying an additional consumer.
  • the electronic charge regulator provides visual information by LEDs on the status of the alternating current generator 3.
  • the rechargeable battery 5 accumulates and releases the generated energy by the generator 3 to provide a continuous and stable supply to the connected consumers, including during periods in which there is no water flow in the pipeline or in metal tube casing 6, respectively.
  • the second housing 7 is attached to the tubular housing 6 and thus constitute together a complete unit.
  • the telemeter 8 with a built-in 3G modem is equipped with digital and analog inputs and is designed to record data for different indicators at the point of installation of the energy-independent logger.
  • the measured indicators are:
  • the reversible axial turbine 1 and its accessories for propulsion and conversion of the kinetic energy of the water into electrical provide a continuous and independent power supply of the telemeter 8 and other meters on the mains water supply, which are power consumers up to 25 W.
  • the operating principle is similar to the principle of Kaplan or Bulb turbines in hydropower plants but differs from them in that the leading indicator here is the generation of a minimum pressure drop.
  • the efficiency ratio of the turbine 1 is deliberately low, allowing it fully operate when changing the water direction as well as in a wide range of water quantities.
  • the reversible axial turbine 1 is coupled to the shaft 2 of the alternating current generator 3.
  • the generator 3 includes a rotor with permanent magnets and a wound stator in a water impermeable tubular metal housing 6.
  • the generator 3 charges the battery 5 through the regulator 4.
  • the main consumer of energy produced by the reversible axial turbine 1 is the telemeter 8 with a built-in 3G modem.
  • the telemeter 8 collects data from various measuring devices powered by the battery 5 through the regulator 4 by the reversible axial turbine 1. Thanks to the built-in 3G modem with the corresponding SIM card and the continuous power supply, the telemeter 8 will send real-time data to a web based application for visualizing and managing measurement data.

Abstract

The present invention relates to an energy-independent logger, which will be use in the field of water supply and sewerage systems and facilities, and in particular for monitoring mains and sewerage networks. The provided energy-independent logger includes a reversible axial turbine (1) coupled directly to shaft (2) of an alternating current generator (3) all mounted together in a tubular metal housing 6. The alternating current generator (3) is attached by ribs to the inside of the tubular metal housing (6) with an opening being provided in one of the ribs and the metal housing (6) through which the cables of the alternating current generator (3) pass through to a regulator (4). The regulator (4) is connected to a rechargeable battery (5) to power a telemeter (8) with a built-in 3G modem. The regulator (4), the battery (5) and the telemeter (8) are housed in a second housing (7) attached to the tubular metal housing (6). According to the invention, the regulator (4) includes a rectifier unit of three-phase alternating voltage of the generator (3) and an electronic charge regulator of the battery (5). The provided logger allows remote measurement, control and balancing of the water cycle. Through the built-in 3G modem with the corresponding SIM card and the continuous power supply, the telemeter (8) sends real-time data to a web-based application for visualizing and managing measurement data.

Description

SELF-POWERED DATA LOGGER FOR WATER SUPPLY AND
SEWERAGE SYSTEMS
FIELD OF THE INVENTION
The present invention relates to an energy-independent logger, which will· be use in the field of water supply and sewerage systems and facilities, and in particular for monitoring mains and sewerage networks.
BACKGROUND TO THE INVENTION
The water supply of settlements, industrial and agricultural sites is realized by existing water supply system. It is a set of engineering facilities that produce, purify, transport and delivers to the consumers the necessary water quantities. Water abstraction sources are springs, underground waters, rivers, dams, lakes and seawater after desalination. The natural water extracted from these sources contains some impurities, which are removed before it reaches the end user.
The modem water supply system needs more effective monitoring and management with the increase in production costs for the supply of drinking, industrial and irrigation water to the end-user and its growing importance as an asset. Leakages in the water supply system are among the main causes of huge water losses across the mains water supply. In addition to losing large amounts of water, the presence of leaks in the system can also lead to contamination of water in mains water supply, to cause damage to buildings and facilities, and so on. Continuous mains network monitoring is required to both detect leaks in a timely manner and reduce water losses and to regulate pressure and prevent accidents in worn-out water supply and sewerage networks.
Acoustic or correlation units most commonly used in the practice of detecting leakage and failures in mains network. The well-known data collection units as data loggers need batteries and have the complex implementation.
U.S. Patent No. WO/1996/022508, published on 25.07.1996, relates to a wheel mounted data logger. The document discloses an acoustic sensor that is excited by the noise produced by the running engine of a vehicle or machine and a travelled distance internal sensor. Both sensors are connected to a microcontroller and are all housed together with a power battery in a single smal l box as to create a unit capable of recording in its internal memory the status of the engine, the distance travelled and the top speed developed for each one of the programmed periods of time.
U.S. Patent No. 20170350100, published on 07.12.2017, relates to an intelligent standpipe for drawing water from a mains water supply. The standpipe includes an inlet having a first coupling configured to enable the standpipe to be connected to a hydrant outlet of the mains water supply and an outlet having a second coupling configured to enable a water delivery hose to be connected to the standpipe. A flow meter measures a volume of water flowing from the inlet to the outlet and a data logger is connected to the flow meter and records the volume of water measured. The GPS module determines the location of the standpipe when the flow meter detects the water flow and a wireless communication module transmits the recorded volume of water and corresponding GPS location to a central monitoring facility.
There is no known energy-independent logger with autonomous power supply and real time monitoring of key indicators of the mains water supply.
SUMMARY OF THE INVENTION
An object of the invention is to provide an energy-independent logger with an autonomous power supply and for real-time monitoring of physical, chemical and other indicators of the mains water supply.
The problem is solved by providing the energy-independent logger comprising a reversible axial turbine coupled directly to the shaft of alternating current generator all mounted together in a tubular metal housing. The alternating current generator is attached by ribs to the inside of the tubular metal housing with an opening being provided in one of the ribs and respectively in the metal housing, through which the cables of the alternating current generator pass through to a regulator. The regulator is connected to a rechargeable battery to power a telemeter with a built-in 3G modem. The regulator, the battery, and telemeter are housed in a second housing attached to the tubular metal housing. According to the invention, the regulator includes a rectifier unit of three-phase alternating voltage of the alternating current generator and an electronic charge regulator of the battery.
An advantage of the provided energy-independent logger is that the specially designed built-in low pressure drop reversible turbine will produce electrical energy in amount needed to supply a combination of water, pressure, and level measuring instruments and thanks to the low head losses will not hinder the normal operation of the water supply system. In addition, the logger allows remote measurement, control and balancing of the water cycle.
Brief description of the drawings
The present invention is shown in the enclosed Figure 1, which is a schematic diagram of an energy-independent logger.
Description of preferred embodiments
The provided energy-independent logger, shown in Figure 1 , includes a reversible axial turbine 1 coupled directly to shaft 2 of an alternating current generator 3 all mounted together in a tubular metal housing 6. The tubular metal housing 6 is made of welded flanges, cones and tubular elements with a mechanically machined slot for mounting the generator 3. The reversible axial turbine 1 has a low efficiency and processes a small part of the water flow energy, and the turbine 1 being able to work with a water flow in both directions of the tubular housing 6. Actuating elements of the axial turbine 1 are propellers fixed to a hub. The outer diameter of the propeller is 0.5-2 mm smaller than the diameter of the tubular metal housing 6 in which the turbine 1 is mounted. The hub of reversible axial turbine 1 is coupled directly to the shaft 2 of the generator 3 and it is the operating device providing a rotary motion to generate an electric current by the generator 3. The shaft 2 is made of metal and imparts the rotary motion from the turbine 1 to the rotor of the generator 3. The alternating current generator 3 has permanent magnets, an encapsulated rotor and a wound stator. The rotor of the generator 3 is mounted on rolling bearings working in an aqueous medium. The aim of the design is to ensure the tightness of the windings of the generator 3 without the need to install seals. The alternating current generator 3 is attached by ribs to the inside of the tubular metal casing 6 with an opening being provided in one of the ribs and the metal housing 6 respectively, through which the cables of the alternating current generator 3 pass through to the regulator 4. The cables from the terminals of the generator 3 are hermetically sealed.
The regulator 4 is connected to a rechargeable battery 5 for powering a telemeter 8 with a built-in 3G modem. The regulator 4, the battery 5 and the telemeter 8 are housed in a second housing 7 attached to the tubular metal housing 6. The regulator 4 includes a rectifier unit of three-phase alternating voltage of the generator 3 and an electronic charge regulator of the battery 5 for supplying an additional consumer. The electronic charge regulator provides visual information by LEDs on the status of the alternating current generator 3. The rechargeable battery 5 accumulates and releases the generated energy by the generator 3 to provide a continuous and stable supply to the connected consumers, including during periods in which there is no water flow in the pipeline or in metal tube casing 6, respectively. The second housing 7 is attached to the tubular housing 6 and thus constitute together a complete unit. The telemeter 8 with a built-in 3G modem is equipped with digital and analog inputs and is designed to record data for different indicators at the point of installation of the energy-independent logger.
For example, the measured indicators are:
water quantity via a connection to a measuring device - water meter, flow meter with pulse output;
pressure - via a connection to a transmitter with 4-20mA output; water quality - through various transmitters with 4-20mA output.
Operating principle of the provided energy-independent logger.
The reversible axial turbine 1 and its accessories for propulsion and conversion of the kinetic energy of the water into electrical, by virtue of the most simplified and reliable design, provide a continuous and independent power supply of the telemeter 8 and other meters on the mains water supply, which are power consumers up to 25 W. The operating principle is similar to the principle of Kaplan or Bulb turbines in hydropower plants but differs from them in that the leading indicator here is the generation of a minimum pressure drop. The efficiency ratio of the turbine 1 is deliberately low, allowing it fully operate when changing the water direction as well as in a wide range of water quantities.
The reversible axial turbine 1 is coupled to the shaft 2 of the alternating current generator 3. The generator 3 includes a rotor with permanent magnets and a wound stator in a water impermeable tubular metal housing 6. The generator 3 charges the battery 5 through the regulator 4.
The main consumer of energy produced by the reversible axial turbine 1 is the telemeter 8 with a built-in 3G modem. The telemeter 8 collects data from various measuring devices powered by the battery 5 through the regulator 4 by the reversible axial turbine 1. Thanks to the built-in 3G modem with the corresponding SIM card and the continuous power supply, the telemeter 8 will send real-time data to a web based application for visualizing and managing measurement data.

Claims

1. Energy-independent logger characterized that the logger includes a tubular metal housing (6) in which is mounted a reversible axial turbine (1) coupled directly to the shaft (2) of an alternating current generator (3) attached by ribs to the interior of the tubular metal housing (6), with an opening being provided in one of the ribs and respectively in the tubular metal casing (6), through which the cables of the alternating current generator (3) pass through to a regulator (4), wherein the regulator (4) in connected to a rechargeable battery (5) for powering a telemeter (8) with a built-in 3G modem, wherein the regulator (4), the battery (5) and the telemeter (8) are housed in a second housing (7) attached to the tubular metal housing (6).
2. Energy-independent logger as defined in claim 1 characterized that the regulator (4) includes a rectifier unit of three-phase alternating voltage of the alternating current generator (3) and an electronic charge regulator of the battery (5).
PCT/BG2018/000045 2018-11-30 2018-12-10 Self-powered data logger for water supply and sewerage systems WO2020107081A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BG112843A BG67239B1 (en) 2018-11-30 2018-11-30 Energy independent logger
BG112843 2018-11-30

Publications (1)

Publication Number Publication Date
WO2020107081A1 true WO2020107081A1 (en) 2020-06-04

Family

ID=65019224

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BG2018/000045 WO2020107081A1 (en) 2018-11-30 2018-12-10 Self-powered data logger for water supply and sewerage systems

Country Status (2)

Country Link
BG (1) BG67239B1 (en)
WO (1) WO2020107081A1 (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08122109A (en) * 1994-10-21 1996-05-17 Fuji Electric Co Ltd Fluid measuring device added with power generation function
WO1996022508A2 (en) 1995-01-13 1996-07-25 Amadeu Tonussi Rodrigues Wheel mounted data logger
WO1999062042A1 (en) * 1998-05-22 1999-12-02 Woorigisool Inc. A telemeter with independent power source
JP2002267510A (en) * 2001-03-07 2002-09-18 Matsushita Electric Ind Co Ltd Telemeter
WO2008018836A1 (en) * 2006-08-07 2008-02-14 Agency For Science, Technology And Research Self-powered in-pipe fluid meter and piping network comprising a plurality of such fluid meters
WO2010030189A1 (en) * 2008-09-12 2010-03-18 Fjerdingstad Technology Fluid analysis system and method for operation of an analysis system
US20110221197A1 (en) * 2004-07-26 2011-09-15 Hydrospin Monitoring Solutions Ltd. Apparatus for transforming energy of liquid flowing in a liquid flow path
KR101721099B1 (en) * 2015-11-10 2017-03-30 주식회사 아이콘트롤스 Freeze protection and wireless flowmeter using self power
US20170219550A1 (en) * 2014-07-30 2017-08-03 Suez Group Smart measurement system at the delivery point of a fluid
US20170350100A1 (en) 2014-12-17 2017-12-07 Skilltech Consulting Services Pty Ltd Intelligent standpipe

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08122109A (en) * 1994-10-21 1996-05-17 Fuji Electric Co Ltd Fluid measuring device added with power generation function
WO1996022508A2 (en) 1995-01-13 1996-07-25 Amadeu Tonussi Rodrigues Wheel mounted data logger
WO1999062042A1 (en) * 1998-05-22 1999-12-02 Woorigisool Inc. A telemeter with independent power source
JP2002267510A (en) * 2001-03-07 2002-09-18 Matsushita Electric Ind Co Ltd Telemeter
US20110221197A1 (en) * 2004-07-26 2011-09-15 Hydrospin Monitoring Solutions Ltd. Apparatus for transforming energy of liquid flowing in a liquid flow path
WO2008018836A1 (en) * 2006-08-07 2008-02-14 Agency For Science, Technology And Research Self-powered in-pipe fluid meter and piping network comprising a plurality of such fluid meters
WO2010030189A1 (en) * 2008-09-12 2010-03-18 Fjerdingstad Technology Fluid analysis system and method for operation of an analysis system
US20170219550A1 (en) * 2014-07-30 2017-08-03 Suez Group Smart measurement system at the delivery point of a fluid
US20170350100A1 (en) 2014-12-17 2017-12-07 Skilltech Consulting Services Pty Ltd Intelligent standpipe
KR101721099B1 (en) * 2015-11-10 2017-03-30 주식회사 아이콘트롤스 Freeze protection and wireless flowmeter using self power

Also Published As

Publication number Publication date
BG67239B1 (en) 2021-02-15
BG112843A (en) 2020-06-15

Similar Documents

Publication Publication Date Title
US8279080B2 (en) Systems and methods for remote utility metering and meter monitoring
RU2600211C2 (en) Gas purge valve with actuation sensor
CN211602038U (en) Autonomous power supply water pipe network flow pressure measurement remote water meter
CN108626582B (en) LoRa-based real-time leakage detection device for self-generating heat supply pipeline
CN107525552A (en) A kind of passive intelligent remote transmitting water meter
EP2032231B1 (en) System for remote utility metering and meter monitoring
CN102997962A (en) Method and apparatus for operating a cable for wind farms
CN109268698A (en) A kind of self-power generation type pipeline leakage monitoring system
JPH08122109A (en) Fluid measuring device added with power generation function
CN109099321A (en) A kind of intelligent pipeline monitoring device using pipe motion fluid self power generation
JP2020012824A (en) Flow information communication device
WO2020107081A1 (en) Self-powered data logger for water supply and sewerage systems
BG3120U1 (en) Energy independent logger
CN111130297A (en) Fluid energy collection device
GB2358475A (en) Monitoring or control of a water supply at remote sites
LU101299B1 (en) Volume flowmeter and method for determining a volumetric flow rate
EP3973177B1 (en) Fluid monitoring apparatus
CN204301790U (en) Self power generation flow-monitoring device
CN209245731U (en) A kind of energy saving and environment friendly pipeline leakage monitoring system
CN209294811U (en) A kind of intelligent pipeline monitoring device using pipe motion fluid self power generation
CN109854958B (en) Municipal administration sewer network monitored control system
EP3744969A1 (en) Energy harvester, pressure reduction valve and water meter
CN109060048A (en) A kind of self-power generation type new flowmeter
KR101171732B1 (en) Operating method of micro hydro generating system
CN217504879U (en) Self-generating intelligent water meter

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18833597

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18833597

Country of ref document: EP

Kind code of ref document: A1