CN107238424B - A kind of detection device and detection method of circulating gas turbine meter - Google Patents
A kind of detection device and detection method of circulating gas turbine meter Download PDFInfo
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- CN107238424B CN107238424B CN201710494209.1A CN201710494209A CN107238424B CN 107238424 B CN107238424 B CN 107238424B CN 201710494209 A CN201710494209 A CN 201710494209A CN 107238424 B CN107238424 B CN 107238424B
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- flowmeter
- flow
- meter
- stagnation
- gas turbine
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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
- G01F25/17—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters using calibrated reservoirs
Abstract
The present invention provides a kind of detection devices of circulating gas turbine meter, use pure air for medium, gas flowmeter is examined and determine, calibration and inspection, including vacuum pump (1), air accumulator (2), converge tubular container (3), switch valve (4), Venturi nozzle (5), stagnation vessel temp meter (6), stagnation container pressure meter (7), stagnation container (8), flow control valve (9), thermometer (10) after checklist, pressure gauge (12) before tested flowmeter (11) and checklist, vacuum pump (1) is sucked pure air by the upstream straight pipe entrance for being detected flowmeter (11), any selection Venturi nozzle to be switched (5), change and is detected flow-meter, thermometric pressure measurement calculates the mass flow obtained through Venturi nozzle (5), complete calibrating.The gas turbine meter detection method for using the detection device accordingly is additionally provided, it is time-consuming short, detection efficiency is improved, it is reproducible.
Description
Technical field
The present invention relates to the detection technique of flowmeter, the detection device of especially a kind of circulating gas turbine meter and
Detection 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 rotating speed is directly proportional to pipeline mean flow rate, meanwhile, the cutting of blade cyclic
Electromagnet generates 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
The frequency of signal, i.e. electric impulse signal, this electric fluctuating signal is directly proportional to the flow of detected fluid.Turbine flowmeter has precision
The advantages of high, reproducible, inferred-zero drift, high range ratio.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, is easy to digitize, the turbine flowmeter pressure loss is small, and blade energy anti-corrosion can measure
Sticky and corrosive medium.
Gas turbine meter is a kind of delicate flow measuring instrumentss, and corresponding flow totalizer meter is mating can be used for surveying
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 be applied 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 generates rotation, impeller, that is, period by means of the kinetic energy of fluid
Change to property the magnetic resistance value in magnetoelectric induction system, the magnetic flux by coil is made to generate electric pulse by periodically changing
Signal is shown or is sent to corresponding flow totalizer meter, PLC or host computer after amplifier amplifies, flowed
The measurement of amount or total amount.The basic structure of gas-turbine flow sensor as shown in Figure 1, it mainly by shell, preceding leading truck, leaf
Wheel, rear leading truck, compacting ring, fuel loading system (DN40 or more) and the compositions such as amplifier or display converter.
Integrated gas turbine flowmeter structure is Explosion-proof Design, can show that flow total amount, instantaneous flow and flow are full
Spend percentage.Battery uses long-acting lithium battery, and single function integrating insutrument battery was up to 5 years or more, Multi-function display table
Battery also can reach 12 months or more.The flux unit that integrated gauge outfit can be shown is numerous, there is cubic meter, adds
Logical sequence rises, standard cubic meter, and standard rises etc., fixation pressure can be set, temperature parameter compensates gas, to pressure and temperature
The little occasion of Parameters variation is spent, the instrument can be used that compensation integrating is fixed.
However, that there are measuring environment conditions is single nonstandard for gas turbine meter at present, vertification regulation follows different
Artificial regulation, not up to standardization also can not be to technologies that it is calibrated to can not accurately judge the quality of gas turbine meter
Defect, the range of flow in addition positive pressure method being used to measure is smaller, is only suitable for small-bore flowmeter, to heavy caliber flowing meter
Examine and determine unripe technology.
Invention content
The purpose of the present invention is to provide a kind of detection device of circulating gas turbine meter, use pure air for
Medium is examined and determine gas flowmeter, calibrated and is examined, including vacuum pump, air accumulator, confluence tubular container, switch valve, literary mound
In nozzle, stagnation vessel temp meter, stagnation container pressure meter, stagnation container, flow control valve, thermometer after checklist is detected
Pressure gauge before flowmeter and checklist, the vacuum pump is sucked air by the upstream straight pipe entrance of checklist, by quilt
Straight pipe, checklist and checklist downstream straight pipe enter the stagnation container before examining table, in the downstream of stagnation container, are equipped with institute
Venturi nozzle is stated, the switch valve in the Venturi nozzle downstream is controlled, to any selection text to be switched
Nozzle in mound is detected flow-meter to achieve the purpose that change, and the stagnation container measures temperature by the stagnation vessel temp, leads to
The stagnation container pressure table pressure measurement is crossed, the mass flow obtained through the Venturi nozzle is calculated, is completed to described tested
The calibrating of table.
Preferably, the pure air is provided by recycling gas circuit, is evacuated by air pump.
Preferably, vacuum pump provides negative pressure.
The purpose of the present invention is also realized by a kind of detection mode of circulating gas turbine meter, including is walked as follows
Suddenly：
(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 device；
(3) it is calibrating medium with pure air, adjusts at flow point to the certain percentage of maximum stream flow, one timing of operation
Between, it is formally examined and determine after waiting for medium temperature, pressure and stability of flow；
(4) according to vertification regulation, multiple 1.5 grades of turbine flowmeters is set and examine and determine flow point, will surveyed in i-th jth time
Tested flowmeter pulses signal and calibrating gas flow apparatus measure to obtain the conduct of the ratio between standard volume flow in the point this time
The instrument coefficient that i-th jth time measures；
(5) founding mathematical models evaluate the relative uncertainty degree of the detection device input quantity of the gas turbine meter
So that it is determined that the credit rating of the gas turbine meter.
Preferably, the step (2) turbine flowmeter is co-axially mounted with front and back straight pipe needs.
Preferably, the step (3) adjusts flow point to 70% flow point of maximum stream flow, runs 5 minutes.
Preferably, the step (4) sets four flow points, respectively Qmin, 0.6Qmin, 0.4Qmax, Qmax.
Preferably, the step (4) is for range ratio<20：1 flowmeter, boundary flow 0.6Qmin=0.2Qmax.
Preferably, the mathematical model of the step (5) is to calculate ith to measure the instrument coefficient and biography for being detected flowmeter
Broadcast rate.
The negative-pressure testing device and method take it is short, reduce labor intensity, improve detection efficiency, set without mobile test
It is standby, it is reproducible.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Description of the drawings
Some specific embodiments that the invention will be described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical reference numeral denotes same or similar component or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.The target and feature of the present invention will be apparent from view of following description taken together with the accompanying drawings,
In attached drawing：
Fig. 1 is the gas turbine meter structural schematic diagram according to the prior art；
Fig. 2 is the circulating gas turbine meter structure of the detecting device schematic diagram according to the embodiment of the present invention；
Fig. 3 is the circulating gas turbine meter detection method flow chart according to the embodiment of the present invention.
Specific implementation mode
Referring to attached drawing 2, a kind of detection device of circulating gas turbine meter is provided, uses pure air for medium,
Gas flowmeter is examined and determine, calibrated and is examined, including vacuum pump 1, air accumulator 2, confluence tubular container 3, switch valve 4, literary mound
In nozzle 5, stagnation vessel temp meter 6, stagnation container pressure meter 7, stagnation container 8, flow control valve 9, thermometer after checklist
10, it is detected pressure gauge 12 before flowmeter 11 and checklist, vacuum pump 1 is entered air by the upstream straight pipe for being detected flowmeter 11
Mouth sucking, described in straight pipe, tested flowmeter 11 and 11 downstream straight pipe of tested flowmeter enter before tested flowmeter 11
Stagnation container 8 is equipped with the Venturi nozzle 5, controls the described of 5 downstream of the Venturi nozzle in the downstream of stagnation container 8
Switch valve 4 is detected flow-meter to any selection Venturi nozzle 5 to be switched to achieve the purpose that change, described
Stagnation container 8 is by 6 thermometric of stagnation vessel temp meter, and by 7 pressure measurement of stagnation container pressure table, calculating is passed through
The mass flow of the Venturi nozzle 5 completes the calibrating to the tested flowmeter 11.Pure air is carried by recycling gas circuit
For being evacuated by air pump, vacuum pump provides negative pressure.
Referring to attached drawing 3, a kind of detection mode realization of gas turbine meter includes the following steps：(1) setting measurement item
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 mounted on the inspection
It surveys on device, turbine flowmeter is co-axially mounted with front and back straight pipe needs；(3) with air be calibrating medium, adjust flow point to
70% flow point of maximum stream flow is run 5 minutes, is formally examined and determine after waiting for medium temperature, pressure and stability of flow；(4)
According to vertification regulation, multiple 1.5 grades of the turbine flowmeters calibrating flow points 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 measures and calibrating gas flow apparatus
The ratio between the instrument coefficient that is measured as i-th jth time；(5) founding mathematical models evaluate the detection of the gas turbine meter
The relative uncertainty degree of device input quantity so that it is determined that the gas turbine meter credit rating, mathematical model is to calculate the
The i instrument coefficient and spreading rate for measuring tested flowmeter.
Wherein K=Ni/Vi, (1)
K is that ith measures the instrument coefficient for being detected flowmeter, (m3)-1
NiThe umber of pulse that measured stream gauge display instrument measures is measured for ith；
ViFor the integrated flux of ith measuring device, 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 is examined and determine and is used medium temperature (18.5 ± 0.1) oc, supply voltage 220V, under the conditions of the measuring environment of supply frequency 50Hz,
With a 0.5-120m3The gas turbine meter of/h, DN25mm are examined and determine, and flow selection measures at maximum stream flow 70%
60 seconds, integrated flux 250L, 6 times were continuously measured with industry control measuring apparatus and obtains one group of measurement row, obtains single test standard deviation
It is 13.55, it is 0.20% to take 3 average value uncertainties, is not known in conjunction with the extension for the gas turbine meter that producer provides
Degree and coefficient, it is 0.24% to obtain synthesis relative standard uncertainty.However it is measured minute in other given flow points that measure
After not obtaining above-mentioned numerical value, goes to measure and take over repeatability as maximum value, expanded uncertainty 0.54% is not true in the extension
It is standard acceptable gas turbine flowmeter under fixed degree.
The negative-pressure testing device and method take it is short, reduce labor intensity, improve detection efficiency, set without mobile test
It is standby, it is reproducible.
It, will not be by these embodiments although the present invention is described by reference to specific illustrative embodiment
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
The embodiment of the present invention can be modified and be changed in the case of protection domain and spirit.
Claims (1)
1. a kind of detection method of circulating gas turbine meter, the detection method uses a kind of circulating gas-turbine stream
The detection device of gauge uses pure air for medium, is examined and determine gas flowmeter, calibrated and is examined, including vacuum pump
(1), air accumulator (2), confluence tubular container (3), switch valve (4), Venturi nozzle (5), stagnation vessel temp meter (6), stagnation are held
Device pressure gauge (7), stagnation container (8), flow control valve (9), thermometer (10) after checklist, be detected flowmeter (11) and by
Pressure gauge (12) before inspection table, the vacuum pump (1) is by the pure air by the upstream straight pipe entrance of tested flowmeter (11)
Sucking enters by straight pipe, tested flowmeter (11) and tested flowmeter (11) downstream straight pipe before tested flowmeter (11)
The stagnation container (8) is equipped with the Venturi nozzle (5), controls the venturi in the downstream of the stagnation container (8)
The switch valve (4) in nozzle (5) downstream is changed to any selection Venturi nozzle (5) to be switched with reaching
The purpose of tested flow-meter, the stagnation container (8) are held by stagnation vessel temp meter (6) thermometric by the stagnation
Device pressure gauge (7) pressure measurement calculates the mass flow obtained through the Venturi nozzle (5), completes to the tested flowmeter
(11) calibrating, the pure air are provided by recycling gas circuit, are evacuated by air pump, and the vacuum pump (1) provides negative
Pressure；It is characterized by comprising 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 device, the turbine flowmeter is co-axially mounted with front and back straight pipe needs；
(3) it is calibrating medium with air, adjusts at flow point to the certain percentage of maximum stream flow, run certain time, wait for
It is formally examined and determine after medium temperature, pressure and stability of flow, adjusts flow point to 70% flow point of maximum stream flow, operation 5
Minute；
(4) according to vertification regulation, the turbine flowmeter of four 1.5 grades of setting examines and determine flow point, by what is measured in i-th jth time
Tested flowmeter pulses signal and calibrating gas flow apparatus measure to obtain i-th point of the conduct of the ratio between standard volume flow in the point this time
The instrument coefficient that jth time measures, four 1.5 grades of the turbine flowmeter examine and determine flow point, respectively Qmin, 0.6Qmin,
0.4Qmax, Qmax, for range ratio<20：1 flowmeter, boundary flow 0.6Qmin=0.2Qmax；
(5) founding mathematical models, evaluate the relative uncertainty degree of the detection device input quantity of the gas turbine meter to
Determine that the credit rating of the gas turbine meter, the mathematical model are to calculate ith to measure the instrument for being detected flowmeter
The calculation formula of coefficient and spreading rate, the spreading rate is：u2 crel(K)=u2 rel(Ni)+u2 rel(Vi)。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710494209.1A CN107238424B (en) | 2017-06-26 | 2017-06-26 | A kind of detection device and detection method of circulating gas turbine meter |
| PCT/CN2017/090472 WO2019000259A1 (en) | 2017-06-26 | 2017-06-28 | Detection device and method for circulating type gas turbine flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710494209.1A CN107238424B (en) | 2017-06-26 | 2017-06-26 | A kind of detection device and detection method of circulating gas turbine meter |
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| Publication Number | Publication Date |
|---|---|
| CN107238424A CN107238424A (en) | 2017-10-10 |
| CN107238424B true CN107238424B (en) | 2018-10-09 |
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| CN201710494209.1A Active CN107238424B (en) | 2017-06-26 | 2017-06-26 | A kind of detection device and detection method of circulating gas turbine meter |
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| Country | Link |
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| CN (1) | CN107238424B (en) |
| WO (1) | WO2019000259A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111854860B (en) * | 2019-04-26 | 2022-02-01 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibrating device and method |
| 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 |
| CN111854861B (en) * | 2019-04-26 | 2022-08-05 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibration method |
| CN110031068A (en) * | 2019-05-17 | 2019-07-19 | 安徽金大仪器有限公司 | A kind of fluid flowmeter detection device |
| CN110243444A (en) * | 2019-07-09 | 2019-09-17 | 海盐美捷测试仪器有限公司 | Negative pressure source device, detecting gas meter air-channel system and calibration method |
| CN110220576A (en) * | 2019-07-25 | 2019-09-10 | 浙江裕顺仪表有限公司 | A kind of efficient gas flow standard device that can examine and determine more flowmeters simultaneously |
| CN112808051B (en) * | 2019-11-18 | 2022-07-05 | 中国石油天然气股份有限公司 | Mixer and flowmeter calibration method |
| CN110887655A (en) * | 2019-12-24 | 2020-03-17 | 核工业理化工程研究院 | Movable gas medium supply device |
| CN110954193A (en) * | 2019-12-27 | 2020-04-03 | 山东省计量科学研究院 | Variable-temperature and variable-flow flowmeter durability test device |
| CN111751076A (en) * | 2020-06-09 | 2020-10-09 | 西安交通大学 | Device and method for measuring flow coefficient of pressurizing cabin runner based on pressure sensitive paint |
| CN112179665B (en) * | 2020-09-18 | 2022-08-23 | 中国航发四川燃气涡轮研究院 | Method for acquiring inlet stagnation pressure of low-pressure turbine performance test |
| CN112683371A (en) * | 2020-12-11 | 2021-04-20 | 浙江苍南仪表集团股份有限公司 | Signal detection method for gas turbine flowmeter verification |
| CN113720424B (en) * | 2021-07-26 | 2023-08-15 | 广州能源检测研究院 | Series-parallel coupling type multi-station water meter calibrating device and method |
| CN116519100B (en) * | 2023-07-03 | 2023-09-08 | 河北丰源智控科技股份有限公司 | Automatic verification system for water meter |
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| EP0078334B1 (en) * | 1981-10-30 | 1987-01-21 | Elster & AG Mess- und Regeltechnik | Calibratable gas turbine motor with interchangeable measuring unit |
| DE10318944A1 (en) * | 2003-04-26 | 2004-11-11 | Imeter Holding B.V. | Electronic turbine gas meter has additional supply channels for delivery of compressed gas, lubricant or cleaning agent from outside the meter for automatic maintenance |
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2017
- 2017-06-26 CN CN201710494209.1A patent/CN107238424B/en active Active
- 2017-06-28 WO PCT/CN2017/090472 patent/WO2019000259A1/en active Application Filing
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| JJG1037-2008涡轮流量计;国家质量监督检验检疫总局;《中华人民共和国国家计量检定规程》;20081231;全文 * |
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| Publication number | Publication date |
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| CN107238424A (en) | 2017-10-10 |
| WO2019000259A1 (en) | 2019-01-03 |
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