CN100387937C - Electronic turbine flowmeter for gas - Google Patents
Electronic turbine flowmeter for gas Download PDFInfo
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- CN100387937C CN100387937C CNB200480013762XA CN200480013762A CN100387937C CN 100387937 C CN100387937 C CN 100387937C CN B200480013762X A CNB200480013762X A CN B200480013762XA CN 200480013762 A CN200480013762 A CN 200480013762A CN 100387937 C CN100387937 C CN 100387937C
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- gas
- turbine
- pressure
- turbine flowmeter
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- 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
- G01F1/05—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 mechanical effects
- G01F1/10—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 mechanical effects using rotating vanes with axial admission
- G01F1/115—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 mechanical effects using rotating vanes with axial admission with magnetic or electromagnetic coupling to the indicating device
Abstract
The invention relates to an electronic turbine flowmeter for gas (1) whose measuring principle, first of all, basically consists of converting the kinetic energy inherent to the flow of gas to be measured into a rotation of a turbine wheel (5), and of using the rotational speed of this turbine wheel for determining the volume of the flow of gas. In order to achieve a higher measuring accuracy, the invention provides that the flow past a special rotating body (15) is evaluated instead of the flow past the turbine blades (6) and, optionally, the respective gas pressure is taken into account by a Reynolds linearization. In addition, the wear of the ball bearing (8) and the respective pressure of flow against the turbine blade (5) is monitored by sensors.
Description
Technical field
The present invention relates to a kind of electronic turbine flowmeter for gas.
Background technology
This turbine flowmeter for gas with removable range insert (Meseinsatz) provides in EP 0 078 334 A1.
The measuring principle of turbine flowmeter for gas is: the kinetic energy that detected air-flow self is had, change into rotatablely moving of turbine by means of the turbine in the flow path that is placed in detected gas, wherein, the rotating speed of turbine is proportional to detected gas flow or detected gas volume in the ideal case.
Generally, detect the rotating speed of turbine by means of corresponding sensing technology.For this reason, be the sensor that turbo arrangement directly makes progress, its mode is: when the blade of turbine from the side through out-of-date generation pulse, this pulse is delivered to the quantity of state converter of an electronic type that is connected.The output shaft of turboshaft orders about a mechanical type meter.In the front or the back of this meter, generally all be connected in series already mentioned quantity of state converter, by corresponding calibration data the metering result is measured correction by it.This metering correction is essential, because metering result's quality at first is subjected to the influence of a series of mechanical quantity and hydrodynamics technology parameter, as the friction loss of turbine, it increases along with the increase of the block bearing wearing and tearing of turbine.
Generally speaking, if capacity is low, gas density is little, then measuring error is bigger, because gas is compared smaller to the driving merit of turbine with those mechanical influence parameters in this scope.The metering result depends on the physical dimension size of meter in addition, especially acts on each stream pressure of impeller, the coefficient of viscosity of gas and the air pressure of density and gas etc.
During calibration, consider that the main path of these parameters influence is: obtains one and detect graph of errors, utilize in its described quantity of state converter and each to be measured the result revise or can carry out this correction in the above.Mainly be that turbine flowmeter for gas is moved having only under the working pressure, therefore also under this working pressure, calibrate, and the top measuring error correction of explaining can be considered as in traditional characteristic curve correction subsequently enough accurately.
Another metering result's main parameter that is the possible source of error of influencing is the gas flow friction, and it is according to the difference of its streamer mode---laminar flow or turbulent flow---and the generation Different Effects.Under the general work situation of turbine flowmeter for gas, the air-flow that is occurred mainly is a turbulent flow, especially under high pressure applications.In the ideal case, has proportional relation between the rotating speed of gas velocity here and turbine.The influence of change of pressure can be paid attention to by accurate interpolation or extrapolation.
But, must measure the working pressure of detected gas all the time for this reason.In a kind of so-called Reynolds-linearization mode, it is finished by multinomial coefficient or corresponding correction chart, wherein considers the influence of working pressure and above-mentioned Reynolds number, so just can consider consequent metering result's deviation.The method of this complexity is seldom used up to now.
Summary of the invention
Target of the present invention is: create a kind of turbine flowmeter for gas, it has higher measuring accuracy, and does not have corresponding complicated subsequent calibrations, error correction, can use in broad as far as possible application.Target of the present invention is to realize by following technical scheme.
A kind of turbine flowmeter for gas, has a turbine, the turbo blade of this turbine is placed in the gas channel of detected gas, wherein, described turbine is placed on the axle or wheel shaft by ball bearing supporting, in fixed air-flow rectifier, settling a sensor outer housing with a meter electronics, wherein, the constant radial transducer of meter and at least one stationkeeping that directly makes progress is carried out data and is connected, radial transducer is configured the rotary body that rotates with turbine at least one separately, its mode make rotary body from the radial transducer next door through the time produce a pulse train that is proportional to the rotational speed of turbine respectively.
Turbine flowmeter for gas has a meter electronics, since be the turbine flowmeter for gas of electronic type, at first it does not have general mechanical problem and correction, and these are absolutely necessary in mechanical type running roller meter.
Another major advantage of gas meter of the present invention is: meter is protected among a sensor outer housing, and it is settled along the equidirectional of air current flow, and has therefore reduced the demand to taking up space significantly.Integrated sensor outer housing can be equipped or change as required subsequently.Wherein, within the scope of the invention, sensor outer housing can be placed in the front or the back of the turbine of meter on airflow direction.
Within the scope of the invention, sensor outer housing and be placed in wherein meter with at least one radially sensing element carry out data and be connected, be with foregoing sensor difference: this sensing element be not to the blade of turbine but to a special rotary body that is connected with turbine and rotates therewith from the side through carrying out computing.The pulse that rotary body produced of for this reason constructing by means of self, with the pulsion phase ratio that is generally produced by passing through from the side of turbo blade, it detects and data processing is more clear, degree of accuracy is also higher.
Can improve measuring accuracy by other sensors of making progress of footpath, on their circular orbits in an imagination, preferably settle equally spacedly.By using at least two sensors, can in corresponding computing, pick out the variation of sense of rotation, and revise for the possible error of other each sensor by the interference (Redundanz) that obtains thus for pulse train.
In a kind of preferable configuration, rotary body is a hole circle that rotates with turbine, wherein, in the framework of an induction type detecting device, as the situation here, perhaps the process from the side with the boring on solid material (Vollmaterial) or the hole circle detects and is handled as signal.Use this hole circle, the mobile phase ratio with detecting blade can detect the rotation of turbine more accurately.
Such sensor can be simply near switch (Naeherungsschalter), because rotary body allows to produce high-precision signal.According to requirement to accuracy of detection, and other requirements of the auxiliary process that also will describe again, meter of the present invention also can be equipped expensive stroke counter (Wegaufnehmer).
In the another kind expansion of meter of the present invention, for the rotary body that is connected with turbine also has been equipped with at least one axial sensor.
In this structure, rotary body has a disc that has boring that rotates jointly with turbine extraly, therefore, the process from the side of this disc contactlessly produces the series of pulses that a density is directly proportional with the rotational speed of turbine in an induction type detecting device.
The metering result of this axial sensor can be used for interference detection or error correction.Disposing for impeller under the situation of a plurality of axial sensor, can also distinguish sense of rotation.
In a kind of preferable configuration, especially improve in the structure of accuracy of detection, meter not only equip one this radially or axial sensor, but have four sensors on the circumference that is placed in ball bearing equally spacedly.By using a plurality of sensors, can pick out the contingent sense of rotation counter-rotating of turbine, can differentiate the malfunctioning of a sensor, perhaps the drift of some sensors is revised by consequent interference.
In another kind expansion, radially and/or axial sensor be fabricated to analog signal sensors, they according to rotary body from the side through and produce an analog pulse signal.
By for the amplitude of the pulse signal of radial transducer or the calculation process of noise, the abrasion condition that can cause according to the operation of ball bearing picks out that it is contingent unbalance or damage.Calculation process also is to finish in the meter electronics in the sensor outer housing of turbine flowmeter for gas.
Be associated with the processing computing of simulating signal, compare with a scope given in advance.If exceed or be lower than can be given in advance threshold values, just produce a caution signal, provide the information that must change or repair the ball bearing of turbine as early as possible.The processing of the simulating signal of radial transducer can be distinguished people thus in early days and is detected error and be used in time preventing that contingent meter is malfunctioning.For the ball bearing abrasion condition, monitoring becomes another measure that improves the meter accuracy of detection and prevent its inefficacy.
By calculating, can find the surface and the rotary body of sensor and be attached thereto may changing of distance between the turbine that connects the simulating signal of sensor.Wherein, if rotary body will have peculiar advantage axially and directly upwards only having one or a few boring, because prolonged the burst length of signal thus, this signal is used to calculate the spacing of determining rotary body and axial sensor.Compare with calculating, can detect spacing defined above more accurately thus by short pulse of time.
The variation of this spacing produces because of damage of bearings and the stream pressure that acted on the turbine by air-flow.This stream pressure, the load variations significantly that particularly produces when turbine starts and stops can be damaged turbine, and therefore obvious damage meter.The load change scope of meter manufacturer so all given in principle load range that allows and permission.
In a kind of preferable configuration, therefore the mutual relationship between the pulse signal of axial sensor and the threshold values given in advance is detected, and produces a mistake and/or warning warning when exceeding.Utilize the testing result of axial sensor, can also determine service intervals in addition, identify variation tendency or send early warning.
Calculation process described above allows us in advance or pick out contingent flowmeter error at once or it is malfunctioning, and in most cases can also determine its reason, provides about the document form that overload may take place with one.
The sensor outer housing that is placed in the air-flow rectifier inside of flowmeter manufactures bubble-tight, and therefore, the pressure that exists in sensor outer housing and is what to separate between the operating pressure of all gases pressure or detected gas.
In the sensor outer housing inside of impermeability structure, be arranged to ubiquity atmospheric pressure or slight low pressure (vacuum) and keep constant.
Turbine flowmeter for gas of the present invention is equipped with a pressure detector in addition, and it is for the configuration of the pressure chamber of turbine, is used for measuring the gaseous tension or the operating pressure of detected gas.This gas meter is connected with the meter electronics data.
Here proved already: the pressure detector in being placed in the pressure chamber has advantage when working according to the reliable method of pressure differential detection.For this reason, pressure detector self is equipped with a detected pressures chamber, provides reference value by it for pressure differential detection.
In a kind of preferable configuration, can by means of one for meter configuration memory element---it is placed in the sensor outer housing too, the correction chart or the multinomial coefficient of each meter stored.By continuing to monitor for the gaseous tension of operating pressure or detected gas, and send each operating pressure to meter electronics, can be by means of the table of corrections or the multinomial coefficient that leave in the memory element in meter, the result revises automatically to metering, has wherein considered the influence of each gas density or each gaseous tension.So far the turbine flowmeter for gas of only calibrating for a kind of operating pressure, can be according to this automatic error correction, in preset range, use,, finish corresponding correction by means of being stored the correction chart in above-mentioned memory element or the help of multinomial coefficient.
The internal pressure of sensor outer housing and all gases are irrelevant, with leave memory element in the combining of Reynolds number, and, make the use scope of a predetermined operating pressure just of turbine flowmeter for gas of the present invention, but whole pressure limit to the detection of each gaseous tension.
Except the automatic consideration that the front illustrated to all gases density, can also carry out other known features curve correction, method is: deposit various graph of errors extraly in memory element, and be used for the metering result is revised automatically.
In another expansion of the present invention, on the flow path of detected gas or settling in the pressure chamber of turbine, settle other pressure transducer, so that obtain other measurement of correlation parameter, revise the metering result.
In the memory element of meter, deposit other metering related data, as manufacturer's data, detection data and curves or calibration data.Especially can also utilize memory element to show the detection data that the time period given in advance is interior.
Can come to provide safeguard protection by means of emergency power pack in addition for the metering result who produces in the meter electronics.
The fundamental difference of meter electronics of the present invention and traditional meter is: by means of the data that leave in the memory element, as the service data of each detection, the result revises automatically for metering.Shown, storage or detect respectively measure the result, in needed measuring accuracy scope, all finished error correction.
Description of drawings
Below the present invention is described in detail by means of an embodiment who schematically provides in the legend.Shown in the figure be:
Fig. 1 is the partial cross-sectional view of an electronic turbine flowmeter for gas,
Fig. 2 is the detailed view of the radial transducer function in the turbine flowmeter for gas shown in Figure 1, is vertical view,
Fig. 3 is that another detailed view of radial transducer function is vertical view among another embodiment of turbine flowmeter for gas shown in Figure 1,
Fig. 4 is the detailed view of another sensing characteristics of turbine flowmeter for gas shown in Figure 1, is the vertical view of axial sensor function,
Fig. 5 is the block diagram of the meter electronics in the turbine flowmeter for gas shown in Figure 1.
Embodiment
Turbine flowmeter for gas 1 shown in Figure 1 mainly comprises a gas channel 2, and detected gas is passed this gas channel 2 by a gas guiding structure that does not continue to provide after introducing, flow to an air stream outlet that does not provide equally then here.
In gas channel 2, settling a turbine 5 with turbo blade 6.This turbine 5 is placed on the axle with two ball bearing 8.In a fixed air-flow rectifier 10 of flowmeter, settling a sensor outer housing 11.This sensor outer housing 11 is a bubble-tight space, is wherein settling a meter electronics 3, and it has a memory element 4 and a processor unit 9.
Be equipped with a sensing head 12 on the sensor outer housing 11, it has two axial sensor 13 and two radial oriented radial transducer 14 along axial orientation, and they are placed on the circumference in the imagination, be positioned at and be similarly among the bubble-tight sensing head 12.Here, they be induction type near switch, they are configured to a rotary body 15, the latter and turbine 5 are on the same axis 7 and rotate therewith.Rotary body 15 mainly contains a disc 16 that rotates together for this reason, and its excircle is the border with a hole circle 17, and radial transducer 13 and axial sensor 14 are nuzzled up above it and kept a determining deviation with it.
Sensing technology in the turbine flowmeter for gas 1 shown in Figure 1 provides in the details diagram that Fig. 2 and 3 is given in detail.
Fig. 2 has provided the xsect of an end face side of sensing head 12, and it has radial oriented radial transducer 14.
Sensing head 12 is settled with one heart with the hole circle 17 of metal, and the latter is with rotary body 15 runnings.
Here, in the embodiment that is given, hole circle 17 has two borings 18.Boring 18 on induction type radial transducer 14 next doors through out-of-date, cause a signal interruption 20, the frequency of its appearance can be used as the signal that is directly proportional with the rotating speed of turbine 5.
In another structure that Fig. 3 gave, also can substitute the hole circle 17 that rotates together for radial transducer 14 one or more metal contact pin 19 of rotating together of configuration.They from the side through being brush past on the motionless radial transducer 14 of stationkeeping.Rotary body made of plastic is substituted, and it is pasted together in the Kong Quan region of rotation with bonding jumper.The bonding jumper radial transducer 14 of in the rotary course of turbine, nuzzling up.At this moment, density that can paired pulses 21 is carried out computing, comes substitution signal to interrupt 20.
In addition, in sensing head 12, be equipped with the axial sensor 13 of axial orientation,, have other boring 18 above for they have disposed the disc 16 of a rotary body 15 that rotates together, be similar to shown in Figure 2ly, they produce a pulse train that is directly proportional with the rotational speed of turbine 5.
Provided the meter 3 that is placed in the sensor outer housing 11 with block diagram among Fig. 5, it has a preposition sensing head 12.
Sensing head 12 is placed in the withstand voltage shell, and is connected with sensor outer housing 11 by a bubble-tight glass insulator 22.
In sensing head 12, be each sensor 13 or vibrator coil that has near switch 23 of 14 equipments.This vibrator coil 23 is connected on the Signal Matching device 25 by an amplifier 24, and the latter has been positioned in thereafter the meter shell 11, is used for carrying out the simulation trial pre-service especially.Signal after handling like this is sent in the processor 9 subsequently, because the cause of interference is to its ubiquity dual (zwiefach vorhand ist), is connected with an integration memory element 4.Meter 3 is by a cutting position adaptation (Schnittstellenanpassung) 26, by corresponding other bubble-tight glass insulators 27, carrying out data with an electronic device is connected, the latter is placed in the outside of turbine flowmeter for gas 1 extraly, does not here further illustrate.
Below as follows for the function declaration of above-described turbine flowmeter for gas 1.
Examined gas imports in the gas channel 2 by an air-flow guiding structure, and a turbine 5 that is positioned on the axle 7 is being settled in the there.The driving of the kinetic energy that gas had that the turbo blade 6 of this turbine 5 is flow through sailed and rotated.Be supported on the rotation of the turbine 5 of axle on 7 by two ball bearing 8, make the next door process of rotary body 15 from sensor 13 and 14.Sensor 13 is connected with meter electronics 3 by corresponding conducting rod, and the latter is placed in the sensor outer housing 11. Sensor 13 and 14 sends the pulse of certain density, and they are corresponding to boring 18 situations of process from the side on the rotary body 15.
Like this, produced a signal that is directly proportional with air-flow, it can measure by means of meter electronics 3, and can converse corresponding detected gas amount by corresponding conversion.
In addition, settling a pressure detector in gas channel 2, it is worked according to the pressure differential detection principle.As the datum pressure of pressure differential detection, use the internal pressure of this pressure detector.Sensor outer housing 11 with respect to other gas channel 2 for impermeability sealing.In this sensor outer housing 11, be vacuum state or atmospheric pressure.
Therefore be placed in pressure detector in the gas channel 2 and provide each air pressure of detected gas.This air pressure can connect with stored correction chart in the memory element 4 of each flowmeter and multinomial coefficient, eliminates the influence of gaseous tension to testing result, promptly determines the true volume by the gas of gas channel 2.In meter electronics, automatically by means of for each self-configuring of meter, deposit in the correction data in the memory element 4, the barometric information that provides by pressure detector is provided, therefore carry out so-called Reynolds correction, and automatically revise the metering result.
Like this, can on one or two operating pressure points, calibrate 1 of above-mentioned turbine flowmeter for gas.
According to described Reynolds number calibration, next flowmeter can be used in the predetermined pressure limit, and it is determined according to each pressure transducer that uses by detected gas pressure, needn't calibrate or carry out with post-equalization.Therefore the application of flowmeter has enlarged significantly.
Because meter electronics is placed in a structure in the impermeability sensor outer housing 11, can also realize the applicability of turbine flowmeter for gas 1 by changing the sensor outer housing 11 that comprises corresponding pressure transducer fully for various different pressures scopes.
Meter electronics is connected with a series of other sensors, especially pressure transducer in addition, detects the detection data that other is used for error correction by them, and for example the inertia behavior with turbine is relevant.
Sensor in the sensing head 12 is an analog signal sensors, therefore, and by carrying out computing again for the pulse train of simulating signal, especially can accessing the conclusion of relevant ball bearing 8 running statuses to processing about the amplitude of radial transducer 14.Like this, from the hole of unbalance rotation circle 17 from the side through and change by the amplitude of analog signal sensors 13,14 pulse signals that provided, can determine in the ball bearing 8 contingent unbalance or damage.
According to confirming: must change or repair from the ball bearing 8 of that unbalance beginning turbine 5 by the predefined threshold values of permission amplitude of pulse or bandwidth given in advance.Like this, it is malfunctioning to prevent turbine flowmeter for gas 1 to take place in time, and therefore improves the fail safe coefficient of device on the whole.
From axial sensor 13, for the computing of simulating signal provide one with act on turbine 5 on the detection limit that is directly proportional of each fluid pressure value, it roughly is recorded in the memory element 4.Whether can recognize flowmeter 1 is like this ordered about in allowed limits.
Like this, particularly can pick out flowmeter contingent maloperation when starting and stopping.Also can change flowmeter in time when needing.
More than be illustrated for a turbine flowmeter for gas 1, its accuracy of detection is improved, reason is that it is different from traditional turbine flowmeter for gas 1, its pulse train is not that turbo blade 6 by turbine 5 is from the side through producing.In addition, these pulses are transmitted to a meter electronics 3, have therefore avoided contingent mechanical transfer loss.
In gas channel 2, carry out pressure detection, produce a datum pressure by corresponding pressure transducer self in addition, and a memory element 4 is provided for meter 3, it has the Reynolds number that relates to each flowmeter, therefore, can realize measuring the result and be adapted to the various air pressure that detected gas self is had automatically.
In addition; the advantage that turbine flowmeter for gas 1 of the present invention has is: by monitoring be in the ball bearing 8 in the quite strong friction environment and act on turbine 5 and flowmeter 1 on whole hydrodynamic pressure, make people can protectiveness the contingent flowmeter defective of ground early detection.
Symbol description
1 turbine flowmeter for gas
2 gas channels
3 meters
4 memory elements
5 turbines
6 turbo blades
7
8 ball bearing
9 processors
10 air-flow rectifiers
11 sensor outer housings
12 sensing heads
13 axial sensor
14 radial transducer
15 rotary bodies
16 discs
17 holes circle
18 borings
19 belong to contact pin
20 signals are interrupted
21 pulses
22 bubble-tight glass insulators
23 have the vibrator coil near switch
24 amplifiers
25 Signal Matching devices
26 cutting position adaptations (Schnittstellenanpasung)
27 other impermeability glass insulators
Claims (21)
1. turbine flowmeter for gas, has a turbine (5), the turbo blade (6) of this turbine (5) is placed in the gas channel (2) of detected gas, wherein, described turbine (5) is placed on the axle (7) or wheel shaft that is supported by ball bearing, in fixed air-flow rectifier (10), settling a sensor outer housing (11) with meter electronics (3), wherein, the constant radial transducer (14) of meter (3) and at least one stationkeeping that directly makes progress is carried out data and is connected, radial transducer (14) is configured separately at least one rotary body (15) with turbine (5) rotation, and its mode produces a pulse train that is proportional to the rotational speed of turbine (5) respectively when making rotary body (15) from radial transducer (14) next door process.
2. electronic turbine flowmeter for gas as claimed in claim 1 is characterized by: for rotary body (15) disposes described radial transducer (14), make this radial transducer (14) equally spacedly on the circumference of the circular orbit of scattered resettlement in an imagination.
3. electronic turbine flowmeter for gas as claimed in claim 2 is characterized by: described radial transducer (14) is configured near switch or stroke counter.
4. electronic turbine flowmeter for gas as claimed in claim 1, it is characterized by: described rotary body (15) has a hole circle (17) that rotates with turbine, and described hole circle (17) has at least one and is the boring (18) of special-purpose from radial transducer (14) next door process.
5. electronic turbine flowmeter for gas as claimed in claim 1, it is characterized by: for the other sensor (13) of rotary body (15) configuration along axial orientation, setting makes rotary body (15) be proportional to the pulse train of the rotational speed of turbine (5) through one of out-of-date generation from these axial sensor (13) next door.
6. electronic turbine flowmeter for gas as claimed in claim 5, it is characterized by: rotary body (15) has a disc (16) with the circle of turbine (5) rotation, and this disc (16) has at least one and is the boring (18) of special-purpose from axial sensor (13) next door process.
7. electronic turbine flowmeter for gas as claimed in claim 5, it is characterized by: for rotary body (15) configuration radially and/or axial sensor (13,14) be fabricated to analog signal sensors and produce an analog pulse signal respectively, the amplitude of this signal and/or noise are fed to and proceed calculation process in the meter, preferentially confirm contingent unbalance or damage in the ball bearing (8), and/or act on each hydrodynamic pressure on the turbine (5).
8. electronic turbine flowmeter for gas as claimed in claim 7 is characterized by: for the processing computing of analog pulse signal, compare with threshold values given in advance, shown by a caution signal when exceeding this threshold values.
9. electronic turbine flowmeter for gas as claimed in claim 1 is characterized by: sensor outer housing (11) is configured to bubble-tight.
10. electronic turbine flowmeter for gas as claimed in claim 9 is characterized by: sensor outer housing (11) has bubble-tight glass insulator (22) and connects power supply, also has other sensor and/or data processing instrument.
11. electronic turbine flowmeter for gas as claimed in claim 1 is characterized by: in sensor outer housing (11), be adjusted to atmospheric pressure or have the vacuum of definite negative pressure.
12. electronic turbine flowmeter for gas as claimed in claim 1 is characterized by: detect each gaseous tension for the pressure chamber of accepting turbine (5) is provided with a pressure transducer.
13. electronic turbine flowmeter for gas as claimed in claim 12 is characterized by: the pressure transducer that carries out the air pressure detection detects pressure reduction, and wherein, the pressure of constant setting is as the datum pressure that detects in the sensor outer housing (11).
14. electronic turbine flowmeter for gas as claimed in claim 12 is characterized by: this pressure transducer is equipped with a detected pressures chamber, keeps constant compression force in this detected pressures chamber, and when pressure differential detection, this pressure is used as datum pressure by pressure detector.
15. electronic turbine flowmeter for gas as claimed in claim 14, it is characterized by: meter electronics (3) is equipped with a memory element (4), wherein depositing in this memory element (4) is correction chart or the multinomial coefficient that each meter disposes respectively, and by means of these data, according to each atmospheric pressure value that is detected, the result automatically carries out the Reynolds correction for each metering.
16. electronic turbine flowmeter for gas as claimed in claim 15 is characterized by: deposit in calibration data in the memory element (4) by means of other some, with the characteristic curve calibration and/or when needed the metering result is carried out other corrections.
17. electronic turbine flowmeter for gas as claimed in claim 16, it is characterized by: in the gas channel (2) of detected gas, be equipped with some other pressure transducers, detect the other parameter, these pressure transducers and be placed in that data link between the meter (3) in the sensor outer housing (11).
18. electronic turbine flowmeter for gas as claimed in claim 17 is characterized by: in the memory element (4) of meter (3), deposit the data of other relevant turbine flowmeter for gas (1).
19. electronic turbine flowmeter for gas as claimed in claim 18 is characterized by: be placed in the connection of powering of meter (3) and relevant emergency power pack in the sensor outer housing (11).
20. electronic turbine flowmeter for gas as claimed in claim 19, it is characterized by: meter (3) is equipped with at least one processing unit (9), wherein, by means of by the sensor (13 that respectively is connected, what 14) provided respectively detects data, and considering correction data and the calibration data that leaves in the memory element (4), the result revises automatically for each metering, makes that the metering quantity of state in being stored in meter electronics (3) has been eliminated error.
21. electronic turbine flowmeter for gas as claimed in claim 20 is characterized by: meter (3) is equipped with another processing unit at least, and/or interference ground has constituted the electronic device that carries out subsequent treatment.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2003112620 DE10312620A1 (en) | 2003-03-22 | 2003-03-22 | Electronic turbine gas meter |
| DE10312620.1 | 2003-03-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1791786A CN1791786A (en) | 2006-06-21 |
| CN100387937C true CN100387937C (en) | 2008-05-14 |
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ID=32946032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200480013762XA Expired - Fee Related CN100387937C (en) | 2003-03-22 | 2004-02-28 | Electronic turbine flowmeter for gas |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1606593A1 (en) |
| CN (1) | CN100387937C (en) |
| DE (1) | DE10312620A1 (en) |
| WO (1) | WO2004085974A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2493368A (en) * | 2011-08-02 | 2013-02-06 | S R Controls Ltd | Validating flow measurement equipment by comparing two separately calculated descriptive statistics |
| CN108225457A (en) * | 2017-12-01 | 2018-06-29 | 连云港水表有限公司 | It is a kind of by the use of ball bearing as the new construction of water meter transmission mechanism |
| CN108982004A (en) * | 2018-07-12 | 2018-12-11 | 黄华 | A kind of differential pressure verifying attachment for pneumatic conveying |
| US11592323B2 (en) | 2021-02-04 | 2023-02-28 | Chengdu Qinchuan Iot Technology Co., Ltd. | Methods and systems for measuring energy of natural gas in a full cycle |
| CN112946231B (en) * | 2021-02-04 | 2022-07-22 | 成都秦川物联网科技股份有限公司 | Natural gas full-period energy metering system and method |
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| EP0801291A1 (en) * | 1996-04-12 | 1997-10-15 | Hans-Holger Körner | Flowmeter with magnetic pulse transmitter |
| US5747703A (en) * | 1993-12-07 | 1998-05-05 | Schlumberger Industries S.A. | Method and apparatus for monitoring variation in the current value of a rate of fluid flow through a flow meter |
| US5866824A (en) * | 1997-01-24 | 1999-02-02 | American Meter Company | Gas turbine meter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2829866C2 (en) * | 1978-07-07 | 1985-11-14 | Elster AG Meß - und Regeltechnik, 6500 Mainz | Helical gear meters |
| DE3612714A1 (en) * | 1986-04-16 | 1987-10-22 | Kieninger & Obergfell | Flow-rate meter |
| DE3804786A1 (en) * | 1988-02-16 | 1989-08-24 | Ziegler Horst | VOLUME OR FLOW MEASURING DEVICE |
| JPH0377019A (en) * | 1989-08-18 | 1991-04-02 | Tokico Ltd | Flowmeter |
| DE10111147B4 (en) * | 2001-03-08 | 2006-02-02 | Inotech Gmbh | gas Meter |
| DE10153687A1 (en) * | 2001-10-31 | 2003-05-15 | Elster Gmbh | Flowmeter |
-
2003
- 2003-03-22 DE DE2003112620 patent/DE10312620A1/en not_active Withdrawn
-
2004
- 2004-02-28 CN CNB200480013762XA patent/CN100387937C/en not_active Expired - Fee Related
- 2004-02-28 EP EP04715822A patent/EP1606593A1/en not_active Withdrawn
- 2004-02-28 WO PCT/DE2004/000374 patent/WO2004085974A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4305281A (en) * | 1979-06-04 | 1981-12-15 | Rockwell International Corporation | Self-correcting self-checking turbine meter |
| US4432244A (en) * | 1981-05-29 | 1984-02-21 | Nippondenso Co., Ltd. | Flow rate transducer |
| EP0393859A1 (en) * | 1989-04-11 | 1990-10-24 | Halliburton Company | Turbine gas flow meter |
| JPH04116421A (en) * | 1990-09-07 | 1992-04-16 | Tokyo Gas Co Ltd | Turbine meter for gas |
| US5388466A (en) * | 1991-05-14 | 1995-02-14 | Teunissen; Theodora A. | Flow meter |
| US5450760A (en) * | 1993-10-18 | 1995-09-19 | Lew; Hyok S. | Turbine flowmeter with capacitive transducer |
| US5747703A (en) * | 1993-12-07 | 1998-05-05 | Schlumberger Industries S.A. | Method and apparatus for monitoring variation in the current value of a rate of fluid flow through a flow meter |
| EP0801291A1 (en) * | 1996-04-12 | 1997-10-15 | Hans-Holger Körner | Flowmeter with magnetic pulse transmitter |
| US5866824A (en) * | 1997-01-24 | 1999-02-02 | American Meter Company | Gas turbine meter |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004085974A1 (en) | 2004-10-07 |
| DE10312620A1 (en) | 2004-10-07 |
| CN1791786A (en) | 2006-06-21 |
| EP1606593A1 (en) | 2005-12-21 |
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