EP2625491A1 - Gas meter - Google Patents
Gas meterInfo
- Publication number
- EP2625491A1 EP2625491A1 EP11758396.3A EP11758396A EP2625491A1 EP 2625491 A1 EP2625491 A1 EP 2625491A1 EP 11758396 A EP11758396 A EP 11758396A EP 2625491 A1 EP2625491 A1 EP 2625491A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- housing
- meter
- gas meter
- measuring device
- 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.)
- Withdrawn
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
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
- G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
- G01F1/6842—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow with means for influencing the fluid flow
-
- 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
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
- G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
- G01F1/6845—Micromachined devices
-
- 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
- G01F15/14—Casings, e.g. of special material
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F3/00—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow
- G01F3/02—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement
- G01F3/20—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having flexible movable walls, e.g. diaphragms, bellows
- G01F3/22—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having flexible movable walls, e.g. diaphragms, bellows for gases
Definitions
- the invention relates to a gas meter comprising a meter housing with a gas inlet with associated connecting piece for a gas supply line and a gas outlet with associated connection piece for a gas discharge line.
- diaphragm meters are used in most households.
- a diaphragm gas meter comprises a relatively large-volume meter housing, in which a mechanical measuring insert is arranged, which operates on the principle of the displacement method and can measure a gas volume in the operating state.
- the mechanical measuring insert comprises one or more membranes, over which separate measuring chambers are formed. These measuring chambers are periodically filled and emptied. Via the membrane movement, two slides are driven by a mechanism, which control the gas flow. Thus, the gas flow is alternately passed through a bellows.
- the mechanics also operate a meter that displays the gas consumption.
- the bellows gas meters which are partly installed everywhere, often have a specific connection piece spacing and specific thread forms.
- Conventional are upwardly directed connecting pieces or screwed connections in the form of a two-pipe design, ie with spaced inlet and outlet connection pieces, or in the form of a single-pipe design, in which two concentric connecting pieces, one for the gas inlet, one for the gas outlet, are provided.
- the measuring inserts used in known diaphragm gas meters work as stated mechanically, resulting in a certain measurement inaccuracy. In the case of a defect usually the entire mechanical measuring insert is replaced, which is complicated and costly, as well as the cost price of such diaphragm gas meters are already considerable.
- sensor-based gas meters are known in which an electronic measuring unit comprising a suitable sensor, the amount of gas is detected.
- a use of such sensor-based gas meter is often not possible, since the housing with the building-side piping, so the gas supply and gas discharge lines from the connecting piece spacing respectively the connection form and the thread is often incompatible and it the interposition of an adapter or a complex adaptation of the building side piping requirement.
- the number of screwed connections in a gas installation must be kept to a minimum; costly conversion work is unacceptable for cost reasons.
- the invention is therefore based on the problem to provide a gas meter, on the one hand allows a very accurate measurement, but on the other hand can be easily connected to existing building-side connection geometries.
- the counter housing is a bellows gas meter housing in which a measuring device comprising a housing with an integrated mikrothermischen flow measuring sensor is arranged at the gas outlet, which housing gas-tight with the outlet side connecting piece or the counter housing in Area of the gas outlet is connected.
- the gas meter is a sensor-based meter comprising a measuring device with a measuring device housing with a microthermal flow sensor integrated therein.
- the gas meter does not include a meter-specific meter housing, which is designed for its characteristic as a sensor-based meter, but a conventional bellows gas meter housing in which the sensor meter is integrated. D. h., That a very accurate measuring sensor measuring device in an existing Bellows gas meter is integrated and used there instead of the previously used mechanical bellows measuring inserts.
- the sensor-measuring device is designed for this purpose after having a housing in which the microthermal flow measuring sensor is arranged, which housing gas-tight with the outlet-side connecting piece, the z. B. a certain piece projects into the meter interior, can be connected, for example, by a simple screw or a corresponding mounting means.
- a simple screw or a corresponding mounting means As an alternative to attachment to the connecting piece, it is also possible in principle to arrange the housing directly on the meter housing, virtually covering the gas outlet.
- the gas meter according to the invention whether as a new meter, or as a counter formed by conversion - thus allows a very accurate measurement while simplest installation or avoid installation problems.
- the measuring device housing preferably has a cylindrical connecting section, via which it is connected to the likewise a cylindrical connecting section of the connecting piece projecting into the interior of the meter housing.
- This can be done, for example, by screwing, as described, often after the connecting piece has an external thread on which the measuring device housing can be screwed with an internal thread on the cylindrical connecting portion and fixed there sealed by suitable seals.
- suitable mounting aids for attaching the measuring device housing, in particular at the connection piece especially if this does not extend into the housing interior, possible.
- the measuring device expediently comprises a pressure reducer provided in the housing as well as a bypass leading past this, in which bypass the flow measuring sensor is arranged. So there is a bypass construction used, which bypass is passed to the pressure loss generating a pressure reducer.
- the pressure reducer is arranged in the cross section of the housing and has a plurality of parallel through holes. Due to the bypass, only a small part of the total gas flow, usually about 1%.
- the gas flows via the flow measuring sensor, which generates a corresponding measurement signal as a function of the flow velocity and, for example, transmits it to a display device, which is provided anyway on the housing side, in a cable or radio-supported manner.
- the flow sensor itself is a microthermal flow sensor, for example, built in CMOS technology, which operates on the principle of thermal anemometry.
- the bypass itself opens when mounting the housing on the connection piece in the region of the connecting piece-side connecting portion, where a corresponding opening is provided, through which the gas coming from the bypass flows to the gas outlet.
- the sensor itself is preferably arranged at the rear end of this bypass section, ie near the bypass outlet, so that the sensor is preceded by a sufficiently long inlet or calming section.
- the bypass can also open in front of the connection portion on the side of the socket, so that it is not to be provided with an opening. The same applies if a suitable mounting device is used to fix the measuring device or her the housing, either on or in the region of the connection piece or on the housing wall itself.
- the measuring device itself communicates expediently with a housing-side display unit, for example via a data cable, or by radio, if the measuring device has a suitable transmission module and the display device has a reception module.
- a housing-side display unit for example via a data cable, or by radio, if the measuring device has a suitable transmission module and the display device has a reception module.
- Conventional diaphragm gas meter housings have a display device on their own. If this is an electronic display device, then it can readily be placed on top of it, ie the sensor measuring signal is passed to a display device-side control device which processes it and controls the display. If a mechanical roller display is provided in the existing bellows gas meter housing, this must either be replaced or a corresponding motor drive must be connected upstream, which in turn is actuated as a function of the sensor signal.
- the meter housing in an upper and a lower housing portion, which are separated from each other gas-tight, split.
- the wireless reception and wireless transmission of data in particular measurement data, serving transmitting and receiving device.
- This transmitting and receiving device can wirelessly transmit existing measurement data to an external receiving station, so that it is not necessary to make the reading on site.
- the data to be transmitted there are virtually no limits.
- the own consumption data that is to say taken up by the own sensor measuring device, can be given to this transmitting and receiving device and transmitted by it, as this transmitting and receiving device also measuring data from other counting devices installed on the building side, such as water, electricity - or heat meters centrally received and forwarded to the external read-out.
- the gas meter according to the invention acts as a "data center" within a counter system comprising several separate counters on the building side, in order to be able to transmit the measured data in a simple manner
- the housing in the region of the lower housing section is expediently made of plastic, while the upper housing section off Metal, as well as the partition wall is made of metal, in order to ensure the high temperature resistance in the region in which the gas flows, on the other hand, but also to ensure a high radiation power from the lower housing portion.
- a preferably switchable via a radio signal switching valve can be provided, via which the gas supply to or from the gas meter can be blocked.
- a switching valve makes it possible to lock the gas flow, if necessary, for example, when the previous gas purchaser is no longer to be supplied by the utility.
- the switching valve can be switched via a radio signal, including, for example, its own receiver is assigned, including but also provided in the lower housing section transmitting and receiving device can be used, an externally initiated actuation of the switching valve is possible.
- the switching valve may be provided, for example, on the housing of the measuring device, so that so the measuring device can be prepared as completely pre-configurable module comprising housing, pressure reducer, sensor together with any connection or radio and the switching valve together with connection or radio.
- the invention further relates to a measuring device for a gas meter of the type described, comprising a preferably cylindrical housing in which a pressure reducer and a passing past them bypass, in which a microthermal flow measuring sensor is arranged, is provided, and on which housing connection or communication means are provided for connecting or communicating with an external display or data transmission device.
- the measuring device is thus a fully configured component that can be used as such in an existing diaphragm gas meter housing. If a cable connection is to be established between the measuring device or the sensor and the display or data transmission device, corresponding connection means are provided on the housing side, to which such a cable can be connected.
- a suitable transmitter optionally a combined transmitting and receiving device when bidirectional data to be transmitted, is provided.
- FIG. 1 is a schematic diagram of a gas meter according to the invention, partly in section,
- Fig. 2 is a cross-sectional view through the gas meter of Fig. 1, and
- FIG. 3 shows a cross-sectional view corresponding to FIG. 2 through a gas meter of a second embodiment.
- a gas meter comprising a bellows gas meter housing 2, which is either a new housing, when the gas meter 1 is a new device, or in which it is already an on-site verbau- tes or aufarbeitepowerdes old housing, if an already originally operated, original bellows gas meter is to be retrofitted.
- the bellows gas meter housing 2 consists of an upper housing portion 3 and a lower housing portion 4, which - may be separated by a (shown in phantom) partition 5 - see Fig. 2 - optionally. Both housing sections 3, 4 and the possible partition 5 consist in the illustrated embodiment of metal, so are sheet metal components.
- a display device 6 for example, a display 7, can be displayed on the consumption readings.
- a connecting piece 8 to which a gas supply line is to be connected, that is, that the gas inlet 9 is located there.
- a second connecting piece 0 Spaced apart and on the other housing section side there is a second connecting piece 0, to which the gas discharge line is connected. sen, that is, that here the gas outlet 11 is located. Gas inlet and outlet are shown by the respective arrows.
- a measuring device 12 Upstream of the gas outlet 11 is a measuring device 12, which is a sensor-based measuring device.
- the measuring device 12 has an example cylindrical housing 13 made of metal, which has a through hole 14, which allows the passage of gas.
- a pressure reducer 15 In the interior of the housing 13, covering the cross section, a pressure reducer 15 is arranged, which has a plurality of parallel passage bores 16.
- a bypass 17 is further formed, which leads around the pressure reducer 15. That is, the inlet 18 of the bypass below the pressure reducer 15 and the outlet 19 of the bypass above the pressure reducer 15 opens into the through hole 14.
- a microthermal flow measuring sensor 20 is arranged, such that gas flowing through the bypass flows past the flow measuring sensor 20. This measures depending on the flow velocity, the passing gas quantity, from which the total gas consumption is derived.
- the microthermal flowmeter sensor is a CMOS technology sensor that operates on the hot wire method, i. He works according to the measuring principle of thermal anemometry.
- the sensor is electrically heated via the heating wire, for which purpose a suitable energy source, for example a battery or the like, which is not shown here in detail, is used.
- a suitable energy source for example a battery or the like, which is not shown here in detail, is used.
- the electrical resistance of the sensor changes.
- By the flow around the sensor with the gas a heat transfer takes place in the gas flowing past. This heat transport is correlated with the flow velocity. Consequently, by measuring the electrical resistance, it is also possible to deduce the flow velocity and, via the latter, in conjunction with the known volume or cross section of the bypass, to the total gas flow.
- the flow measuring sensor 20 communicates with the display device 6, which, for example, as indicated in FIG. 2, communicates a control device 21, with
- a suitable processor includes. This processor evaluates the measuring signals of the flow measuring sensor 20 and determines the actual flow or the cumulative consumption, which is then output on the display 7.
- the communication between the flow measuring sensor 20 and the control device 21 takes place in the example shown via a cable connection 22.
- a wireless connection would also be conceivable, ie that a transmitter would be present at the flow measuring sensor 20 and a receiver associated with the control device 21 or the latter would be used Exchange measured data.
- the housing 13, that is to say the measuring device 12 as a whole, is arranged gas-tight around the gas outlet 11, so that it is ensured that the gas can flow exclusively through the measuring device 12 to the gas outlet 11.
- connection piece 10 projects with a cylindrical connecting section, for example provided with an external thread, into the interior of the upper housing section 3, it is possible to mount the housing 13 on the inside via an internal thread arranged at its upper, likewise a connecting section Unscrew connecting piece connection section.
- the bypass outlet 9 opens through a suitable opening in the connecting portion of the nozzle 10 in this.
- the housing 13 gas-tight either on the neck 10 or the upper lid wall of the housing portion 3 itself to secure. There it can even be welded or soldered if necessary. Regardless of how the fixation of the measuring device 12 takes place, it is in all cases gas-tight to position the gas outlet 11. This arrangement can be done as described both in a new case as well as in a old case in the same way.
- FIG. 3 shows a further embodiment of a gas meter 1 according to the invention, which in terms of construction corresponds to the gas meter 1 from FIGS. 1 and 2.
- the lower housing portion 4 is made of plastic and separated via the metal partition 5 from the upper housing portion 3. D. h., There are two separate volumes 23, 24.
- a transmitting and receiving device 25 is arranged in the lower housing section 4.
- This can be, for example, a LAN-GPRS receiver which serves to receive counter data in the near-range radio band (ISM band), to store counter readings and to forward this data via GSM, GPRS or LAN.
- ISM band near-range radio band
- the measuring signals recorded by the own flow measuring sensor 20 or the measuring data determined by the control device 21 can be transmitted to an external reading or receiving point by radio, for which purpose the control device 21 with the transmitting and receiving device 25 communicates via a cable connection 26. It would also be conceivable, however, a radio link.
- the transmitting and receiving device 25 also serves to receive measurement data from other counters installed on the building side, such as water, electricity or heat meters, wirelessly and, if necessary, to transmit it to an external read-out point by radio.
- the external counters have a suitable transmitting unit, which transmits the measured data to the transmitting and receiving device 25.
- This serves as a building-side "data center” that collects all building-related measurement data and wirelessly transmits it to the read-out point (with different providers also to different read-out points)
- suitable cable feedthroughs for the power supply and the LAN connection and the like for the transmitting and Receiving device 25 provided in the lower housing portion 4, although not shown here in detail.
- the design of the lower housing portion 4 made of plastic allows a high radiation power to transmit the data over long distances can.
- the simple integration of the transmitting and receiving device 25 in the lower housing section 4 requires no additional installation effort on site, but rather the transmitting and receiving device 25 can be integrated in a simple manner. Equally simple is the exchange even on site the lower, original metal portion against a housing portion plastic to integrate the transmitting and receiving device 25.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010047680A DE102010047680A1 (en) | 2010-10-06 | 2010-10-06 | gas Meter |
PCT/EP2011/004639 WO2012045391A1 (en) | 2010-10-06 | 2011-09-15 | Gas meter |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2625491A1 true EP2625491A1 (en) | 2013-08-14 |
Family
ID=44658698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11758396.3A Withdrawn EP2625491A1 (en) | 2010-10-06 | 2011-09-15 | Gas meter |
Country Status (7)
Country | Link |
---|---|
US (1) | US9032790B2 (en) |
EP (1) | EP2625491A1 (en) |
CN (1) | CN103154675A (en) |
DE (1) | DE102010047680A1 (en) |
RU (1) | RU2566532C2 (en) |
UA (1) | UA110804C2 (en) |
WO (1) | WO2012045391A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012020787A1 (en) * | 2012-10-24 | 2014-04-24 | Hydrometer Gmbh | Flow numerator e.g. gas meter, for use in counter device, has flow device comprising measurement device measuring flow of fluid with flow channel, and another flow device does not comprise measurement device contrary to former flow device |
CN102967335A (en) * | 2012-12-11 | 2013-03-13 | 曲宝源 | Micro-thermal type fuel gas meter |
CN103471677B (en) * | 2013-09-29 | 2014-09-03 | 北京双得利科工贸有限责任公司 | Transmitting device for diaphragm gas meter |
EP3186595A4 (en) * | 2014-08-29 | 2019-01-16 | Honeywell International Inc. | Flow sensing module |
US10760934B2 (en) | 2014-12-05 | 2020-09-01 | Natural Gas Solutions North America, Llc | Using localized flow characteristics on electronic flow meter to quantify volumetric flow |
US10139259B2 (en) | 2014-12-05 | 2018-11-27 | General Electric Company | System and method for metering gas based on amplitude and/or temporal characteristics of an electrical signal |
CN104879567B (en) * | 2015-04-30 | 2017-04-12 | 无锡市星翼仪表科技有限公司 | Novel pipeline fixing device |
JP6781619B2 (en) * | 2016-12-13 | 2020-11-04 | 東京瓦斯株式会社 | Gas meter |
US11060895B2 (en) * | 2017-05-22 | 2021-07-13 | Panasonic Intellectual Property Management Co., Ltd. | Gas meter including a measurement unit in communication with a shutoff valve in an extended section within a meter body |
IT201800006409A1 (en) * | 2018-06-18 | 2019-12-18 | GAS METER | |
EP4089375A1 (en) * | 2021-05-14 | 2022-11-16 | Itron Global SARL | Monopipe adapter for a gas meter |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101126652A (en) * | 2007-09-29 | 2008-02-20 | 重庆前卫仪表厂 | Electronic gas meter for mass and flow |
Family Cites Families (16)
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US4014212A (en) * | 1975-10-08 | 1977-03-29 | The Singer Company | Three-chamber gas meter |
NL181292C (en) * | 1976-06-08 | 1987-07-16 | Nederlandse Gasunie Nv | DEVICE FOR IMPROVING THE FLOW PROFILE IN A GAS PIPE. |
US4091668A (en) * | 1977-03-11 | 1978-05-30 | Kimmon Manufacturing Co., Ltd. | Diaphragm type gas meter |
US4437347A (en) * | 1982-01-18 | 1984-03-20 | Michigan Consolidated Gas Company | Shut-off actuating device |
US4565090A (en) * | 1983-10-17 | 1986-01-21 | Motohiro Gotanda | Detection device for detecting and indicating operation of a gas meter |
US4706496A (en) * | 1986-05-14 | 1987-11-17 | American Meter Company | Diaphragm gas meter |
DE3623667A1 (en) * | 1986-07-12 | 1988-01-14 | Kromschroeder Ag G | BELLOW GAS METER |
US4769135A (en) * | 1987-03-02 | 1988-09-06 | Culligan International Company | Automatic metering system |
US6308553B1 (en) * | 1999-06-04 | 2001-10-30 | Honeywell International Inc | Self-normalizing flow sensor and method for the same |
US6655207B1 (en) | 2000-02-16 | 2003-12-02 | Honeywell International Inc. | Flow rate module and integrated flow restrictor |
JP2001330487A (en) * | 2000-05-22 | 2001-11-30 | Ricoh Elemex Corp | Membrane type gas meter |
CH694474A5 (en) * | 2000-06-23 | 2005-01-31 | Sensirion Ag | Gas meter and use of the gas meter. |
DE102004021304B4 (en) * | 2004-04-29 | 2018-12-13 | Abb Ag | Flowmeter |
DE102005022437A1 (en) * | 2005-05-14 | 2006-11-16 | Imeter B.V. | Bellows gas meter has tamper protection using metal housing for all components and intrusion sensor |
US7520051B2 (en) | 2007-01-04 | 2009-04-21 | Honeywell International Inc. | Packaging methods and systems for measuring multiple measurands including bi-directional flow |
US8334787B2 (en) | 2007-10-25 | 2012-12-18 | Trilliant Networks, Inc. | Gas meter having ultra-sensitive magnetic material retrofitted onto meter dial and method for performing meter retrofit |
-
2010
- 2010-10-06 DE DE102010047680A patent/DE102010047680A1/en not_active Withdrawn
-
2011
- 2011-09-15 CN CN2011800480520A patent/CN103154675A/en active Pending
- 2011-09-15 EP EP11758396.3A patent/EP2625491A1/en not_active Withdrawn
- 2011-09-15 WO PCT/EP2011/004639 patent/WO2012045391A1/en active Application Filing
- 2011-09-15 US US13/822,785 patent/US9032790B2/en not_active Expired - Fee Related
- 2011-09-15 RU RU2013120036/28A patent/RU2566532C2/en active
- 2011-09-15 UA UAA201305704A patent/UA110804C2/en unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101126652A (en) * | 2007-09-29 | 2008-02-20 | 重庆前卫仪表厂 | Electronic gas meter for mass and flow |
Non-Patent Citations (1)
Title |
---|
See also references of WO2012045391A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102010047680A1 (en) | 2012-04-12 |
US20130199290A1 (en) | 2013-08-08 |
RU2013120036A (en) | 2014-11-20 |
US9032790B2 (en) | 2015-05-19 |
RU2566532C2 (en) | 2015-10-27 |
UA110804C2 (en) | 2016-02-25 |
WO2012045391A1 (en) | 2012-04-12 |
CN103154675A (en) | 2013-06-12 |
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