WO2020186279A1 - Messsystem zur messung eines massendurchflusses, einer dichte, einer temperatur und/oder einer strömungsgeschwindigkeit - Google Patents
Messsystem zur messung eines massendurchflusses, einer dichte, einer temperatur und/oder einer strömungsgeschwindigkeit Download PDFInfo
- Publication number
- WO2020186279A1 WO2020186279A1 PCT/AT2020/060096 AT2020060096W WO2020186279A1 WO 2020186279 A1 WO2020186279 A1 WO 2020186279A1 AT 2020060096 W AT2020060096 W AT 2020060096W WO 2020186279 A1 WO2020186279 A1 WO 2020186279A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- measuring
- flow rate
- temperature
- unit
- pressure
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/78—Direct mass flowmeters
- G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
- G01F1/84—Coriolis or gyroscopic mass flowmeters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/78—Direct mass flowmeters
- G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
- G01F1/84—Coriolis or gyroscopic mass flowmeters
- G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
- G01F1/8413—Coriolis or gyroscopic mass flowmeters constructional details means for influencing the flowmeter's motional or vibrational behaviour, e.g., conduit support or fixing means, or conduit attachments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/001—Means for regulating or setting the meter for a predetermined quantity
- G01F15/002—Means for regulating or setting the meter for a predetermined quantity for gases
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/02—Compensating or correcting for variations in pressure, density or temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/02—Compensating or correcting for variations in pressure, density or temperature
- G01F15/022—Compensating or correcting for variations in pressure, density or temperature using electrical means
- G01F15/024—Compensating or correcting for variations in pressure, density or temperature using electrical means involving digital counting
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
- G01F15/185—Connecting means, e.g. bypass conduits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F7/00—Volume-flow measuring devices with two or more measuring ranges; Compound meters
Definitions
- Measuring system for measuring a mass flow rate, a density, a temperature and / or a flow rate
- the invention relates to a measuring system for measuring a
- Mass flow rate a density, a temperature and / or a
- Supply unit leads to a consumer, a measuring unit consisting of a first Coriolis measuring device, which is arranged in the main line, a second Coriolis measuring device, which is in series with the first
- Coriolis measuring device is arranged in the main line and is designed for a smaller maximum flow than the first Coriolis measuring device, a bypass line, via which the second Coriolis measuring device can be bypassed, and a valve, which is arranged in the bypass line, and with a computing unit which is connected to the first Coriolis measuring device and the second Coriolis measuring device.
- Such measuring systems and associated measuring methods are used in a large number of systems in which statements about the flow rates, densities or speeds present in the system are required. With the measuring devices used, both the flow rates of liquids and gases in the corresponding lines can be measured.
- An example of a flow measurement is the
- Coriolis measuring devices are used because they have a high level of accuracy in single-phase flows and are also suitable for measuring flow velocities and Measure the flow of gaseous media.
- These Coriolis measuring devices are measuring devices that have to build up a pressure in order to display correct measurement results. Furthermore, these measuring devices only ever achieve one and one specific
- measuring devices have become known in which several Coriolis measuring devices of different sizes are combined with one another.
- Bypass line in which a switching valve is arranged, can be bypassed.
- two smaller flow meters are connected in parallel in front of a larger flow meter, with the
- the maximum flow of the small devices in total corresponds to the maximum flow of the large device. There will always be all three
- Deviation either the measured values are weighted or only one of the measured values is used.
- a measuring system in which instead of the switching valve in the bypass line, a pressure-dependent opening valve, in particular a check valve, is used, via which the smaller Coriolis sensor is bypassed from a certain pressure. Measurement errors can then only arise from the stored mass in the connecting line between the measuring unit and the consumer, since the measuring unit causes an increased pressure loss across the sensors with increasing flow and occurs in the following line, so that the
- the measuring unit is to be placed as close as possible to the consumer
- This task is performed by a measuring system for measuring a
- Mass flow rate a density, a temperature and / or a
- the pressure downstream of the outlet pressure regulator can be set to any desired, in particular a constant value.
- the outlet pressure regulator has a non-constant pressure, which leads to a non-constant mass in this line section with compressible media.
- its length can also be minimized without any problems, so that very precise measurement results can be achieved.
- the pressure in the main line between the supplier and the measuring unit should be selected to be greater than the pressure between the pressure regulator and the consumer.
- the pressure-dependent opening valve in the bypass line it is possible to use the measured values of the Coriolis sensor measuring with higher accuracy in the corresponding measuring range.
- a valve that opens as a function of the pressure is understood to mean a valve which begins when a threshold pressure is reached
- this opening cross-section increases with increasing pressure. In this way, compared to a switching valve, pressure surges which lead to a discontinuity in the measured flow rate can be avoided.
- the outlet pressure regulator is preferably arranged immediately downstream of the measuring unit, so that the line length between the
- Measuring unit and the outlet pressure regulator is minimized and thus also the measurement error due to the non-constant mass present in the line is minimized.
- a second outlet pressure regulator is arranged in the main line.
- Output pressure regulator and / or the second output pressure regulator can be regulated, since in this way it is possible to regulate to a desired pressure or to a changing input pressure at the consumer, whereby, for example, an emptying tank with falling pressure can be simulated.
- a controllable compressor is arranged upstream of the measuring unit in the main line. This should be controllable in a highly dynamic manner in order to be able to generate a constant, constant pressure at its outlet, which means that the supply pressure no longer has to be constant in this version. Furthermore, the pressure in the line behind the supplier no longer has to be greater than the pressure in front of the consumer, since the pressure can be raised to the desired pressure level by the compressor. In a further version, the compressor is pulsation-free. In this way, pressure fluctuations in the subsequent lines are avoided without having to use buffer storage or pressure reducers to compensate for such pressure fluctuations.
- the design of the compressor as a Tesla compressor is particularly advantageous here, since it works without pulsation and does not require any additional lubrication.
- a temperature conditioning unit is arranged in the main line between the measuring unit and the outlet pressure regulator, which allows the temperature of the gas between the outlet of the measuring unit and the inlet to the
- Has return line which branches off downstream of the heat exchanger and the second compressor from the conditioning line
- a thermal short circuit can be created between the outlet from the measuring unit and the inlet to the outlet pressure regulator, which means that the temperature is always kept constant regardless of the flow rate
- Temperature unit can also be arranged at a distance from the outlet pressure regulator and this in close proximity to the consumer, to ensure that the desired outlet pressure is present at the consumer itself.
- a pressure sensor is arranged in the main line between the measuring unit and the temperature conditioning unit and between the temperature conditioning unit and the output pressure regulator, which are connected to a control unit of the second pulsation-free compressor, and that the second pulsation-free compressor is controlled in such a way that that between the pressure sensors in the main line there is a constant
- Pressure loss adjusts.
- the pressure gradient of the temperature conditioning unit is set to a desired constant value in this way, which eliminates measurement errors due to pressure fluctuations caused by the
- Temperature conditioning unit can be reliably avoided.
- Figure 1 shows a schematic representation of a first
- Figure 2 shows a schematic representation of a second
- Figure 3 shows a schematic representation of a third
- Figure 4 shows a schematic representation of a fourth
- the measuring system according to the invention shown in FIG. 1 consists of a first main line 10 through which a gaseous or liquid medium, such as, for example, a gaseous fuel, flows through which the mass flow rate is to be determined.
- a gaseous or liquid medium such as, for example, a gaseous fuel
- a first Coriolis measuring device 12 is arranged, which has a maximum flow rate that is greater than the
- Such a Coriolis measuring device 12 does not deliver exact measured values at low flow rates due to a zero point drift, which occurs because a certain minimum flow rate is required for an exact measurement in Coriolis measuring devices.
- Coriolis measuring device 14 arranged in the main line 10, its
- the maximum flow rate is less than the maximum flow rate of the first Coriolis measuring device 12, which, however, provides more precise measured values than the first Coriolis measuring device 12 at lower flow rates due to its measuring range. Since this second, downstream Coriolis measuring device 14 would, however, lie in the upper area to be measured above its maximum flow rate and would thus cause an extremely high pressure loss due to the resulting orifice effect, which would falsify the flow rate to be measured on the test object or this would be due to an insufficient minimum outlet pressure would make impossible, a bypass line 16 branches off from the main line 10 between the first Coriolis measuring device 12 and the second Coriolis measuring device 14.
- This bypass line 16 opens into the downstream of the second Coriolis measuring device in the present embodiment
- a pressure-dependent switching valve 18 is arranged, which can be designed as a check valve or pressure regulator.
- the pressure-dependent switching valve 18 opens or closes one
- the flow cross-section is released and the medium can flow from a branch 28 of the bypass line 16 out of the main channel 10 through the bypass channel 16 and back into the main channel 10 via an opening 30 of the bypass line 16.
- the two Coriolis measuring devices 12, 14 form a measuring unit 34 with the pressure-dependent switching valve 18 and the bypass line 16 and are connected to a computing unit 32 to which the measured values of the Coriolis measuring devices 12, 14 are transmitted and in which these measured values are processed to generate a usable measurement result. If the medium reaches the main line 10 via a supply unit 36, the first Coriolis measuring device 12 is flowed through and a pressure builds up. The flow also flows through the second Coriolis measuring device 14, in which pressure is also built up. The second, smaller Coriolis measuring device 14 already achieves relatively small ones
- the computing unit 32 uses the measured values of the second Coriolis measuring device 14 as output values.
- Measurement range selected in which both the measured values of the first Coriolis measuring device 12 and the measured values of the second Coriolis measuring device 14 are taken into account and processed by the computing unit 32 by weighting and interpolating them, depending on the differential pressure of the second Coriolis measuring device 14.
- the valve 18 closes the bypass line 16 both in the first and in the second measuring range.
- This area is divided into two parts, namely a third
- Measuring range in which the pressure-dependent opening valve 18 opens due to the pressure applied and a fourth measuring range, which lies between the second measuring range and the third measuring range, in which the measured values of the first Coriolis measuring device 12 are used as output values, but the pressure-dependent opening valve 18 is still closed.
- a switching point of the pressure-dependent opening valve 18 is at a distance from the area in which the measured values of the second, smaller Coriolis measuring device 14 are used, so that a
- Opening pressure of the pressure-dependent opening valve 18 can be excluded. Incorrect output values due to incorrect measurement results of the second Coriolis measuring device 14 due to premature opening, for example due to an existing hysteresis or a
- Valve 18 to the output values of the measuring system are thereby
- valve 18 opens further with increasing pressure and thus gradually an additional
- an outlet pressure regulator 38 is arranged in the main line 10 in the exemplary embodiment according to FIG. 1 behind the measuring unit 34, i.e. downstream of the measuring unit 34 and in front of a consumer 40 whose fuel consumption is measured, via which the inlet pressure at the consumer 40 is kept constant. This has the consequence that the length of the main line 10 between the outlet pressure regulator 38 and the
- Consumer 40 can be selected as long as desired. In order to also reduce the influence of the line section between the outlet pressure regulator 38 and the
- the outlet pressure regulator 38 is arranged in the immediate vicinity of measuring unit 34.
- Supply unit 36 is made available by the in
- any pressure can be set by means of an adjustable outlet pressure regulator 38 or a changing pressure can be generated according to stored characteristic curves, which can be used to simulate certain situations, such as a tank being emptied.
- a second outlet pressure regulator 42 is additionally arranged between the supply unit 36 and the measuring unit 34 in the main line 10, so that the supply unit 36 can also be arranged at a distance from the measuring unit 34 and can deliver a non-constant outlet pressure, since measuring errors occur
- the output pressure of the output pressure regulator 42 is set so that it is lower than the usual supply pressure of the supply unit 36, which means that the output pressure at the output pressure regulator 42 and thus also in the
- Measuring unit 34 can be maintained.
- the second outlet pressure regulator 42 is replaced by a pulsation-free and controllable compressor 44, which is preferably designed as a Tesla compressor.
- this compressor 44 causes the line section
- Line section is prevented by the compressor 44 in the event of a pressure change and, in addition, the pressure made available by the supply unit 36 can be lower, since it no longer has to be selected to be significantly greater than the input pressure at the consumer 40, since a constant output pressure from the pulsation-free compressor 44 can be made available.
- the measuring system which is shown in FIG. 4, offers a further optimized solution.
- a temperature conditioning unit 46 is arranged in the main line 10 between the measuring unit 34 and the outlet pressure regulator 38.
- the main line 10 opens accordingly into a conditioning line 48, in which a second
- pulsation-free compressor 50 which in turn is preferably designed as a Tesla compressor, and a heat exchanger 52 are arranged to generate a desired temperature.
- the temperature conditioning unit 46 has a return line 54, via which the fuel downstream of the heat exchanger 52 and the second
- Compressor 50 branches off from the conditioning line 48 and opens up again into the conditioning line 48 upstream of the heat exchanger 52 and the second compressor 50.
- This temperature conditioning unit 46 can be installed downstream of the measuring unit 34 without any problems, since it reliably reduces the fuel supplied to the consumer 40 even with the smallest flow rates sets the desired constant temperature, because the second pulsation-free compressor 50, the fuel at a
- Control of the compressor 50 can be achieved by this one
- Control unit 53 having a first pressure sensor 56, which is located in the main line 10 immediately upstream of the
- Temperature conditioning unit 46 is arranged and a second pressure sensor 58, which is in the main line 10 downstream of the
- Temperature conditioning unit 46 is arranged, is electrically connected and via which the second compressor 50 as a function of a
- the measuring systems described deliver over a wide range of pressure and
- this measuring system does not need to settle in the event of pressure changes.
- this measuring system is also suitable for
- Interpolation area is interposed.
- the opening point of the valves then varies accordingly with the point at the valve
- Pressure difference that arises due to the pressure loss in the Coriolis measuring device connected in parallel can also be used.
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/439,409 US12169138B2 (en) | 2019-03-18 | 2020-03-17 | Measuring system for measuring flow including two coriolis flow meters connected in series in a main conduit |
| CN202080021895.0A CN113597540B (zh) | 2019-03-18 | 2020-03-17 | 用于测量质量流量、密度、温度和/或流速的测量系统 |
| CA3133824A CA3133824A1 (en) | 2019-03-18 | 2020-03-17 | Measuring system for measuring a mass flow rate, a density, a temperature and/or a flow velocity |
| JP2021548597A JP2022524943A (ja) | 2019-03-18 | 2020-03-17 | 質量流量、密度、温度および/または流速を測定する測定システム |
| KR1020217032870A KR102901028B1 (ko) | 2019-03-18 | 2020-03-17 | 질량 유량, 밀도, 온도 및/또는 유속을 측정하기 위한 측정 시스템 |
| DE112020001359.6T DE112020001359A5 (de) | 2019-03-18 | 2020-03-17 | Messsystem zur Messung eines Massendurchflusses, einer Dichte, einer Temperatur und/oder einer Strömungsgeschwindigkeit |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA50226/2019A AT522357B1 (de) | 2019-03-18 | 2019-03-18 | Messsystem zur Messung eines Massendurchflusses, einer Dichte, einer Temperatur und/oder einer Strömungsgeschwindigkeit |
| ATA50226/2019 | 2019-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020186279A1 true WO2020186279A1 (de) | 2020-09-24 |
Family
ID=70285339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/AT2020/060096 Ceased WO2020186279A1 (de) | 2019-03-18 | 2020-03-17 | Messsystem zur messung eines massendurchflusses, einer dichte, einer temperatur und/oder einer strömungsgeschwindigkeit |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US12169138B2 (de) |
| JP (1) | JP2022524943A (de) |
| KR (1) | KR102901028B1 (de) |
| CN (1) | CN113597540B (de) |
| AT (1) | AT522357B1 (de) |
| CA (1) | CA3133824A1 (de) |
| DE (1) | DE112020001359A5 (de) |
| WO (1) | WO2020186279A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022147589A1 (de) | 2021-01-05 | 2022-07-14 | Avl List Gmbh | Temperiervorrichtung für ein gasförmiges medium |
| AT525357B1 (de) * | 2021-10-04 | 2023-03-15 | Avl List Gmbh | Testeinheit zur Durchfluss- oder Verbrauchsmessung an einem Prüfling |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115077645B (zh) * | 2022-05-16 | 2025-07-18 | 国家石油天然气管网集团有限公司 | 科里奥利质量流量测量仪表及测量方法 |
| CN116858322A (zh) * | 2023-06-16 | 2023-10-10 | 中国汽车技术研究中心有限公司 | 一种涉氢试验用氢气流量测量装置及方法 |
| WO2026024303A1 (en) * | 2024-07-22 | 2026-01-29 | Micro Motion, Inc. | Operating a vibratory meter in two or more vibration modes |
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| US10921174B2 (en) * | 2017-05-25 | 2021-02-16 | Endress+Hauser Group Services Ag | Hydrocarbon transfer standard certified to provide in situ calibration of measuring devices |
| AT521899B1 (de) | 2018-12-12 | 2020-11-15 | Avl List Gmbh | Messsystem und Verfahren zur Messung eines Massendurchflusses, einer Dichte, einer Temperatur oder einer Strömungsgeschwindigkeit |
-
2019
- 2019-03-18 AT ATA50226/2019A patent/AT522357B1/de active
-
2020
- 2020-03-17 US US17/439,409 patent/US12169138B2/en active Active
- 2020-03-17 CA CA3133824A patent/CA3133824A1/en not_active Abandoned
- 2020-03-17 WO PCT/AT2020/060096 patent/WO2020186279A1/de not_active Ceased
- 2020-03-17 DE DE112020001359.6T patent/DE112020001359A5/de active Pending
- 2020-03-17 CN CN202080021895.0A patent/CN113597540B/zh active Active
- 2020-03-17 KR KR1020217032870A patent/KR102901028B1/ko active Active
- 2020-03-17 JP JP2021548597A patent/JP2022524943A/ja active Pending
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| DE597218C (de) * | 1930-11-08 | 1934-05-18 | Naamlooze Vennootschap Machine | Verbundschaltung fuer Mengenmesser |
| EP2824065A1 (de) * | 2008-06-03 | 2015-01-14 | Gilbarco Inc. | Brennstoffausgabeeinrichtung mit Coriolisflussmessern |
| EP2660570A2 (de) | 2012-05-04 | 2013-11-06 | General Electric Company | Umschlagsmesser und Verfahren für Gasbrennstoff |
| US20150219483A1 (en) * | 2014-02-06 | 2015-08-06 | Avl List Gmbh | Method for functional testing of arrangement for dynamic fuel consumption measurement |
| US20180275697A1 (en) * | 2015-06-23 | 2018-09-27 | Avl List Gmbh | Method For Controlling A Conditioning Unit And Consumption Measuring Device Having Such A Conditioning Unit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022147589A1 (de) | 2021-01-05 | 2022-07-14 | Avl List Gmbh | Temperiervorrichtung für ein gasförmiges medium |
| AT525357B1 (de) * | 2021-10-04 | 2023-03-15 | Avl List Gmbh | Testeinheit zur Durchfluss- oder Verbrauchsmessung an einem Prüfling |
| AT525357A4 (de) * | 2021-10-04 | 2023-03-15 | Avl List Gmbh | Testeinheit zur Durchfluss- oder Verbrauchsmessung an einem Prüfling |
Also Published As
| Publication number | Publication date |
|---|---|
| CA3133824A1 (en) | 2020-09-24 |
| KR20210129723A (ko) | 2021-10-28 |
| AT522357A1 (de) | 2020-10-15 |
| US12169138B2 (en) | 2024-12-17 |
| CN113597540A (zh) | 2021-11-02 |
| CN113597540B (zh) | 2025-03-04 |
| US20220146293A1 (en) | 2022-05-12 |
| JP2022524943A (ja) | 2022-05-11 |
| KR102901028B1 (ko) | 2025-12-16 |
| DE112020001359A5 (de) | 2021-12-02 |
| AT522357B1 (de) | 2020-11-15 |
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