CN107131932A - The detection means and detection method of a kind of gas turbine meter - Google Patents
The detection means and detection method of a kind of gas turbine meter Download PDFInfo
- Publication number
- CN107131932A CN107131932A CN201710494943.8A CN201710494943A CN107131932A CN 107131932 A CN107131932 A CN 107131932A CN 201710494943 A CN201710494943 A CN 201710494943A CN 107131932 A CN107131932 A CN 107131932A
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- gas turbine
- gas
- turbine meter
- flowmeter
- cover body
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention provides a kind of detection means of gas turbine meter, gas is used for medium, including cover body (1), liquid bath (2), telecommunication generator (3), examine and determine groove (4), pressure compensation mechanism (5), access slot device (6), source of the gas (7) and multiple valves (8, 9, 10, 11, 12, 13), water-level gauge and a plurality of experiment pipeline, cover body (1) and liquid bath (2) constitute the sealing cavity of a variable volume, cover body (1) causes the internal gas pressure of institute's sealing cavity to keep certain value during declining by pressure compensation mechanism (5), do not change with the depth that the cover body (1) is immersed in sealing fluid, cover body (1) has two baffle plates, volume between baffle plate is fixed, by measuring the time that two baffle plates are successively undergone by telecommunication generator (3), instantaneous velocity can be calculated.The gas turbine meter detection method using the detection means is additionally provided, the detection process is standardized.
Description
Technical field
The present invention relates to the detection technique of flowmeter, the detection means of particularly a kind of gas turbine meter and detection side
Method.
Background technology
Turbine flowmeter is the main species in velocity flowmeter, when detected fluid flows through turbine flow transducer,
Under action of a fluid, impeller stress rotates, and its rotating speed is directly proportional to pipeline mean flow rate, meanwhile, the cutting of blade cyclic
Electromagnet produces the magnetic line of force, changes the magnetic flux of coil, according to electromagnetic induction principle, the potential of pulsation will be induced in coil
Signal, i.e. electric impulse signal, the frequency of this electric fluctuating signal are directly proportional to the flow of detected fluid.Turbine flowmeter has precision
The drift of high, reproducible, inferred-zero, high range than advantage.Turbine flowmeter possesses high-quality bearing, specially designed water conservancy diversion
Piece, therefore greatly reduce abrasion, it is insensitive to peak value, or even it is severe under conditions of can also provide reliable measurand.
Turbine flowmeter output signal is pulse, it is easy to digitized, the turbine flowmeter pressure loss is small, blade energy anti-corrosion can be measured
Sticky and corrosive medium.
Gas turbine meter is a kind of delicate flow measuring instrumentss, with corresponding flow totalizer meter it is supporting can be used for survey
The flow and total amount of quantity of fluid.Gas turbine meter is widely used in the metering in the fields such as oil, chemical industry, metallurgy, scientific research, control
System.Pharmaceutical industry is can apply to equipped with the gas turbine meter of sanitary fitting.Gas turbine meter operation principle
For：When detected fluid flows through sensor, the impeller in sensor produces rotation by means of the kinetic energy of fluid, and impeller is the cycle
Change to property the magnetic resistance value in magnetoelectric induction system, make periodically to change by the magnetic flux of coil and produce electric pulse
Signal, is shown or is sent to corresponding flow totalizer meter, PLC or host computer, flowed after amplifying through amplifier
The measurement of amount or total amount.The basic structure of gas-turbine flow sensor is as shown in figure 1, it is main by housing, preceding leading truck, leaf
The composition such as wheel, rear leading truck, compacting ring, fuel loading system (more than DN40) and amplifier or display converter.
Integrated gas turbine flowmeter structure is Explosion-proof Design, can show flow total amount, and instantaneous delivery and flow are full
Spend percentage.Battery uses long-acting lithium battery, and single function integrating insutrument battery was up to more than 5 years, Multi-function display table
Battery also can reach more than 12 months.The flux unit that integrated gauge outfit can be shown is numerous, there is cubic meter, plus
Logical sequence, rises, standard cubic meter, and standard rises etc., can set fixation pressure, temperature parameter and gas is compensated, to pressure and temperature
The little occasion of Parameters variation is spent, can be used the instrument that compensation integrating is fixed.
However, current gas turbine meter is present, measuring environment condition is single nonstandard, and vertification regulation follows different
Artificial regulation, not up to standardization, so that can not accurately judge the quality of gas turbine meter, the technology that it can not be also calibrated
Defect.
The content of the invention
It is an object of the invention to provide a kind of detection means of gas turbine meter, gas is used for medium, to gas
Flowmeter body is examined and determine, calibrated and examined, including cover body, liquid bath, telecommunication generator, calibrating groove, pressure compensation mechanism, access slot
Device, source of the gas and multiple valves composition, in addition to water-level gauge and a plurality of experiment pipeline, the cover body and the liquid bath constitute one
The sealing cavity of variable volume, the cover body is caused in the sealing cavity during declining by the pressure compensation mechanism
Portion's gas pressure keeps certain value, does not change with the depth that the cover body is immersed in sealing fluid, and the cover body has two gears
Volume between plate, the baffle plate is fixed, is successively undergone by measuring described two baffle plates by the telecommunication generator
Time, the instantaneous velocity of the gas turbine meter can be calculated.
It is preferred that, the cover body is moveable.
It is preferred that, the liquid bath is fixed.
It is preferred that, in addition to pulley, guide pillar and outer guide wheel mechanism, the volume for changing the sealing cavity.
The purpose of the present invention is also realized by a kind of detection mode of gas turbine meter, is comprised the following steps：
(1) setting measurement condition, including atmospheric temperature, relative humidity of atomsphere, atmospheric pressure, calibrating medium temperature, electricity
Source voltage, supply frequency；
(2) under defined measuring condition, according to JJG1037-2008 turbine flowmeter vertification regulations, by turbine flowmeter
In the detection means；
(3) using air as calibrating medium, at regulation flow point to the certain percentage of maximum stream flow, certain time is run,
Formally examined and determine after waiting medium temperature, pressure and stability of flow；
(4) according to vertification regulation, the turbine flowmeter calibrating flow point of multiple 1.5 grades of setting will be surveyed in i-th jth time
Tested flowmeter pulses signal and calibrating gas flow apparatus the point this time measure standard volume flow is used for
The instrument coefficient of i-th jth time measurement；
(5) founding mathematical models, evaluate the relative uncertainty degree of the detection means input quantity of the gas turbine meter
So that it is determined that the credit rating of the gas turbine meter.
It is preferred that, the step (2) turbine flowmeter needs to be co-axially mounted with front and rear straight length.
It is preferred that, the step (3) adjusts flow point to 70% flow point of maximum stream flow, runs 5 minutes.
It is preferred that, the step (4) sets four flow points, respectively Qmin, 0.6Qmin, 0.4Qmax, Qmax.
It is preferred that, the step (4) is for range ratio<20：1 flowmeter, boundary flow 0.6Qmin=0.2Qmax.
It is preferred that, the mathematical modeling of the step (5) is detected the instrument coefficient and biography of flowmeter for calculating ith measurement
Broadcast rate.
The apparatus and method use positive pressure method, and turbine flowmeter is flowed through with the calibrating gas of certain volume amount, so as to realize
Calibrating to flowmeter, itself range of flow is smaller, is adapted to the calibrating less flowmeter of bore, meets flowmeter in reality
State in work, calibration operation is standardized.
According to the accompanying drawings to the detailed description of the specific embodiment of the invention, those skilled in the art will be brighter
Above-mentioned and other purposes, the advantages and features of the present invention.
Brief description of the drawings
Some specific embodiments of the present invention are described in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter.
Identical reference denotes same or similar part or part in accompanying drawing.It should be appreciated by those skilled in the art that these
What accompanying drawing was not necessarily drawn to scale.The target and feature of the present invention is considered to will be apparent from below in conjunction with the description of accompanying drawing,
In accompanying drawing：
Fig. 1 is the gas turbine meter structural representation according to prior art；
Fig. 2 is the gas turbine meter structure of the detecting device schematic diagram according to the embodiment of the present invention；
Fig. 3 is the gas turbine meter detection method flow chart according to the embodiment of the present invention.
Embodiment
Referring to accompanying drawing 2, a kind of detection means of gas turbine meter uses gas for medium, gas flowmeter is entered
Row calibrating, calibration and examine, including cover body 1, liquid bath 2, telecommunication generator 3, calibrating groove 4, pressure compensation mechanism 5, access slot device 6,
Source of the gas 7 and multiple valves 8,9,10,11,12,13 are constituted, in addition to water-level gauge and a plurality of experiment pipeline (do not show in figure
Go out), cover body may move, and liquid bath is fixed, the sealing cavity of cover body and liquid bath one variable volume of composition, by pulley, is led
Post and outer guide wheel mechanism change the volume of the sealing cavity, and cover body causes described by pressure compensation mechanism during declining
The internal gas pressure of sealing cavity keeps certain value, does not change with the depth that the cover body is immersed in sealing fluid, cover body tool
Have the volume between two baffle plates, baffle plate be it is fixed, by measure two baffle plates successively by telecommunication generator undergo when
Between, the instantaneous velocity of gas turbine meter can be calculated.
Referring to accompanying drawing 3, a kind of detection mode of gas turbine meter is realized, is comprised the following steps：(1) setting measurement bar
Part, including atmospheric temperature, relative humidity of atomsphere, atmospheric pressure, calibrating medium temperature, supply voltage, supply frequency；(2) exist
Under defined measuring condition, according to JJG1037-2008 turbine flowmeter vertification regulations, turbine flowmeter is arranged on the inspection
Survey on device, turbine flowmeter needs to be co-axially mounted with front and rear straight length；(3) using air as calibrating medium, regulation flow point to
70% flow point of maximum stream flow, runs 5 minutes, is formally examined and determine after waiting medium temperature, pressure and stability of flow；(4)
Foundation vertification regulation, the turbine flowmeter calibrating flow point of multiple 1.5 grades of setting, four flow points of setting, respectively Qmin,
0.6Qmin, 0.4Qmax, Qmax, for range ratio<20：1 flowmeter, demarcate flow 0.6Qmin=0.2Qmax, will be i-th
This time measures to obtain standard volume flow in the point for the tested flowmeter pulses signal that point jth time is measured and calibrating gas flow apparatus
The instrument coefficient for being used for i-th jth time measurement；(5) founding mathematical models, evaluate the detection of the gas turbine meter
The relative uncertainty degree of device input quantity is so that it is determined that the credit rating of the gas turbine meter, and mathematical modeling is calculates the
The instrument coefficient and spreading rate of the tested flowmeter of i measurement.
Wherein K=Ni/Vi, (1)
K is the instrument coefficient that ith measures tested flowmeter, (m3)-1
NiThe umber of pulse that measured stream gauge display instrument is measured is measured for ith；
ViFor the integrated flux of ith measurement apparatus, m3
Spreading rate is：
It is (23.5 ± 1) oc in atmospheric temperature, relative humidity of atomsphere is (38 ± 1) %RH, atmospheric pressure (94.5 ± 0.5)
KPa, calibrating medium temperature (18.5 ± 0.1) oc, under the conditions of supply voltage is 220V, supply frequency 50Hz measuring environment,
With a 0.5-120m3/ h, DN25mm gas turbine meter are examined and determine, and flow selection is measured at maximum stream flow 70%
60 seconds, integrated flux 250L continuously measured 6 times with industry control measuring apparatus and obtains one group of measurement row, obtains single test standard deviation
For 10.13, it is 0.15% to take 3 average value uncertainties, and the extension of the gas turbine meter provided with reference to producer is not known
Degree and coefficient, it is 0.21% to obtain synthesis relative standard uncertainty.But carry out measurement minute in other given measurement flow points
Do not obtain after above-mentioned numerical value, go measurement to take over repeatability as maximum, expanded uncertainty is 0.42%, not true in the extension
Under fixed degree for standard acceptable gas turbine flowmeter.
The apparatus and method use positive pressure method, and turbine flowmeter is flowed through with the calibrating gas of certain volume amount, so as to realize
Calibrating to flowmeter, itself range of flow is smaller, is adapted to the calibrating less flowmeter of bore, meets flowmeter in reality
State in work, calibration operation is standardized.
Although the present invention is described by reference to specific illustrative embodiment, will not be by these embodiments
Restriction and only limited by accessory claim.It should be understood by those skilled in the art that can be without departing from the present invention's
Embodiments of the invention can be modified and be changed in the case of protection domain and spirit.
Claims (10)
1. a kind of detection means of gas turbine meter, uses gas for medium, gas flowmeter is examined and determine, calibrate and
Examine, it is characterised in that：Including cover body (1), liquid bath (2), telecommunication generator (3), calibrating groove (4), pressure compensation mechanism (5),
Access slot device (6), source of the gas (7) and multiple valves (8,9,10,11,12,13) composition, in addition to water-level gauge and a plurality of developmental tube
Road, the cover body (1) and the liquid bath (2) constitute the sealing cavity of a variable volume, and the cover body (1) is led to during declining
Crossing the pressure compensation mechanism (5) causes the internal gas pressure of the sealing cavity to keep certain value, not with the cover body (1)
Depth in immersion sealing fluid and change, the cover body (1) have the volume between two baffle plates, the baffle plate be it is fixed,
By measuring the time that described two baffle plates are successively undergone by the telecommunication generator (3), the gas-turbine can be calculated
The instantaneous velocity of flowmeter.
2. a kind of detection means of gas turbine meter according to claim 1, it is characterised in that：The cover body (1)
It is moveable.
3. a kind of detection means of gas turbine meter according to claim 1, it is characterised in that：The liquid bath (2)
It is fixed.
4. a kind of detection means of gas turbine meter according to claim 1, it is characterised in that：Also include pulley,
Guide pillar and outer guide wheel mechanism, the volume for changing the sealing cavity.
5. a kind of detection method using such as the gas turbine meter that any detection means is carried out in claim 1-4,
It is characterized in that comprising the following steps：
(1) setting measurement condition, including atmospheric temperature, relative humidity of atomsphere, atmospheric pressure, calibrating medium temperature, power supply electricity
Pressure, supply frequency；
(2) under defined measuring condition, according to JJG1037-2008 turbine flowmeter vertification regulations, turbine flowmeter is installed
In the detection means；
(3) using air as calibrating medium, at regulation flow point to the certain percentage of maximum stream flow, certain time is run, is waited
Formally examined and determine after medium temperature, pressure and stability of flow；
(4) according to vertification regulation, the turbine flowmeter calibrating flow point of multiple 1.5 grades of setting, by what is measured in i-th jth time
Tested flowmeter pulses signal and calibrating gas flow apparatus the point this time measure standard volume flow is used at i-th point
The instrument coefficient of jth time measurement；
(5) founding mathematical models, evaluate the gas turbine meter detection means input quantity relative uncertainty degree so as to
Determine the credit rating of the gas turbine meter.
6. the detection method of gas turbine meter according to claim 5, it is characterised in that：The step (2) is described
Turbine flowmeter needs to be co-axially mounted with front and rear straight length.
7. the detection method of gas turbine meter according to claim 5, it is characterised in that：Step (3) regulation
Flow point is run 5 minutes to 70% flow point of maximum stream flow.
8. the detection method of gas turbine meter according to claim 5, it is characterised in that：Step (4) setting
Four flow points, respectively Qmin, 0.6Qmin, 0.4Qmax, Qmax.
9. the detection method of gas turbine meter according to claim 5, it is characterised in that：The step (4) for
Range ratio<20：1 flowmeter, boundary flow 0.6Qmin=0.2Qmax.
10. the detection method of gas turbine meter according to claim 5, it is characterised in that：The number of the step (5)
Model is learned to calculate the instrument coefficient and spreading rate of the tested flowmeter of ith measurement.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710494943.8A CN107131932A (en) | 2017-06-26 | 2017-06-26 | The detection means and detection method of a kind of gas turbine meter |
| PCT/CN2017/090471 WO2019000258A1 (en) | 2017-06-26 | 2017-06-28 | Gas turbine flowmeter detection device and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710494943.8A CN107131932A (en) | 2017-06-26 | 2017-06-26 | The detection means and detection method of a kind of gas turbine meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107131932A true CN107131932A (en) | 2017-09-05 |
Family
ID=59735697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710494943.8A Pending CN107131932A (en) | 2017-06-26 | 2017-06-26 | The detection means and detection method of a kind of gas turbine meter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107131932A (en) |
| WO (1) | WO2019000258A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520587A (en) * | 2018-12-11 | 2019-03-26 | 顺丰科技有限公司 | Wrap up volume measurement device and method |
| CN111854861A (en) * | 2019-04-26 | 2020-10-30 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibration method and device |
| CN111854860A (en) * | 2019-04-26 | 2020-10-30 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibrating device and method |
| CN111854858A (en) * | 2019-04-26 | 2020-10-30 | 中国石油天然气股份有限公司 | Method and device for determining working performance of working standard device of loop turbine |
| CN112572756A (en) * | 2020-12-11 | 2021-03-30 | 中国人民解放军63660部队 | Airship ballonet volume monitoring device and method |
| CN114578091A (en) * | 2022-05-06 | 2022-06-03 | 河南氢枫能源技术有限公司 | Hydrogenation flow regulation detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113790781B (en) * | 2021-09-15 | 2023-10-27 | 中国航发沈阳黎明航空发动机有限责任公司 | Online calibration method for blade water flow test equipment |
| CN113819981B (en) * | 2021-10-11 | 2024-01-12 | 西安航天动力试验技术研究所 | Kerosene flow uncertainty evaluation device and method for liquid oxygen kerosene engine test |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520587A (en) * | 2018-12-11 | 2019-03-26 | 顺丰科技有限公司 | Wrap up volume measurement device and method |
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| CN111854861A (en) * | 2019-04-26 | 2020-10-30 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibration method and device |
| CN111854860A (en) * | 2019-04-26 | 2020-10-30 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibrating device and method |
| CN111854858A (en) * | 2019-04-26 | 2020-10-30 | 中国石油天然气股份有限公司 | Method and device for determining working performance of working standard device of loop turbine |
| CN111854858B (en) * | 2019-04-26 | 2022-02-01 | 中国石油天然气股份有限公司 | Method and device for determining working performance of working standard device of loop turbine |
| CN112572756A (en) * | 2020-12-11 | 2021-03-30 | 中国人民解放军63660部队 | Airship ballonet volume monitoring device and method |
| CN114578091A (en) * | 2022-05-06 | 2022-06-03 | 河南氢枫能源技术有限公司 | Hydrogenation flow regulation detection device |
| CN114578091B (en) * | 2022-05-06 | 2022-08-23 | 河南氢枫能源技术有限公司 | Hydrogenation flow regulation detection device |
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| Publication number | Publication date |
|---|---|
| WO2019000258A1 (en) | 2019-01-03 |
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Application publication date: 20170905 |