CN105823532A - Mobile flow online calibrating system - Google Patents
Mobile flow online calibrating system Download PDFInfo
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- CN105823532A CN105823532A CN201610320628.9A CN201610320628A CN105823532A CN 105823532 A CN105823532 A CN 105823532A CN 201610320628 A CN201610320628 A CN 201610320628A CN 105823532 A CN105823532 A CN 105823532A
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- fluid
- calibrating
- weighing
- demarcation
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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
- G01F25/14—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters using a weighing apparatus
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- Measuring Volume Flow (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
Abstract
The invention discloses a mobile flow online calibrating system, and relates to the technical field of fluid detection. The technical problem of improving measurement reliability and traceability is solved. The mobile flow online calibrating system comprises a mobile flow calibrating device, a static weighing and calibrating device, and a pipeline formed by connecting a plurality of rigid short pipes. The mobile flow calibrating device is connected to the static weighing and calibrating device. The mobile flow calibrating device comprises a base, a data acquisition controller, a fluid inlet valve, a reference flow meter, a pressure transmitter, a temperature transmitter and a fluid outlet valve, wherein the fluid inlet valve, the reference flow meter, the pressure transmitter, the temperature transmitter and the fluid outlet valve are installed on the base and sequentially connected. The static weighing and calibrating device comprises a weighing device, a fluid container, a fluid conveying pump, a calibrating inlet pipe, a calibrating outlet pipe, a calibrating control valve and a weighing container, wherein the fluid container, the fluid conveying pump and the calibrating inlet pipe are sequentially connected, and the calibrating outlet pipe, the calibrating control valve and the weighing container are sequentially connected. The weighing container is put on the weighing device. The mobile flow online calibrating system is suitable for online calibrating the working flow meter.
Description
Technical field
The present invention relates to fluid detection technology, particularly relate to the technology of a kind of portable flow on-line proving system.
Background technology
In industrial fluids fields of measurement, implementing periodic calibrating for the workflow gauge in using is very important link in effusion meter maintenance work, it can be ensured that the certainty of measurement of effusion meter and performance meet industry and relevant criterion requirement.The method demarcating effusion meter is in the pipeline that target flow meter accesses caliberating device, utilizes caliberating device to detect the flow output signal of target flow meter, to determine the instrument coefficient in terms of target flow.
Using method of standard table proving flowmeter is a kind of scaling method easily, standard scale can be integrated into the standard set-up of a movement, it is achieved to workflow gauge on-line proving.Transmission that the technology using method of standard table proving flowmeter crucial is the guarantee of the uncertainty of measurement (precision) to standard scale equipment and precision is traced to the source.According to relevant criterion and the requirement of code, mass flow or volume flow measurement expanded uncertainty for standard set-up should no more than be calibrated the 1/3 of effusion meter allowable error absolute value.How to ensure to use the overall uncertainty of measurement (precision) of method of standard table device, or how the standard set-up using method of standard table is accurately traced to the source, be the difficult problem always explored in industry.
A kind of employing high accuracy integrated standard scale calibration system of Coriolis mass flowmenter is disclosed, for the method for staking-out work effusion meter in american documentation literature US6360579.Which disclose a kind of employing multiple stage mass flowmenter composition standard scale array, but this patent simply requires to meet relevant criterion requirement as the effusion meter of master meter, by the confirmation of the precision of every effusion meter and the scope of measurement is met the requirements, implementation is individually to demarcate the effusion meter off-line as standard scale, confirm qualified after be installed to again in standard scale system use.Mass flowmenter owing to being directed to use with in patent can be affected by factors such as installations, after standard scale off-line is individually demarcated, it is installed on standard scale array composition calibration system, unavoidably and there is difference at the independent timing signal of off-line in mounting means and condition, influence whether standard scale Surveying Actual Precision, the impact that the certainty of measurement of effusion meter also can be existed by the factors such as the i.e. certainty of measurement of effusion meter is more than depending on demarcating, installation.By the independent calibrated effusion meter of off-line, then being installed in the calibration system of standard scale array composition, how to ensure having constant uncertainty of measurement (precision), this patent does not describe.
The method using high accuracy Coriolis mass flowmenter to be used for on-the-spot on-line proving workflow gauge as standard scale (main meter) is disclosed in Chinese patent literature CN1513110A.Wherein, in order to demarcate the workflow gauge that accuracy rating is 0.1%, it is desirable to each flowmeter accuracy as standard scale to reach or to be better than the uncertainty of 0.03%.Equally, this patent is also not directed to the effusion meter of demarcation independent for off-line, then is installed in calibration system, how to ensure the method that calibration system uncertainty of measurement (precision) is consistent with the effusion meter that off-line is individually demarcated.
Use standard scale effusion meter and diminutive volume pipe or Piston-type oxygen compressor standard set-up disclosed in american documentation literature US5072416 realize the demarcation to situ flow gauge.Use standard scale staking-out work effusion meter, standard scale is demarcated and uses the diminutive volume pipe integrated or Piston-type oxygen compressor to realize transmission of quantity value.Owing to diminutive volume pipe work dischargeable capacity is little, during proving flowmeter, comparison batch is little, requirement and instrument response rate request for execute-in-place are the highest, although diminutive volume pipe standards volume can reach very high accuracy, but in actual mechanical process there is the biggest uncertainty in calibration system.
In sum, the uncertainty for the standard set-up of staking-out work effusion meter meets industry and standard-required is the factor of non-the normally off key.In technology disclosed in above patent and method, mobile method of standard table caliberating device entirety uncertainty is not realized the correlation technique of effectively transmission, in current prior art method, a kind of effective method and technology is not had to solve the effective ways traced to the source for the uncertainty entirety moving method of standard table caliberating device yet.
Although mobile method of standard table caliberating device has many good qualities in calibrating work on the spot effusion meter, but trace to the source owing to not having effective ways to realize mobile method of standard table caliberating device overall precision, have impact on the method extensive application in industry.For using the confirmation of standard scale composition on-line proving device overall precision and tracing to the source, it is the interior problem making great efforts to solve of industry, also has relevant trial at practice process.
Static weighing device is as the device extensively applying proving flowmeter in industry, it is typically mounted at indoor, static weighing device pipeline is design arrangement for staking-out work effusion meter, for mobile method of standard table caliberating device, owing to construction features and the pipeline of device itself are arranged, it is impossible to overall directly demarcation that this system is directly installed to indoor static weighing device completion system is traced to the source.
The precision of accredited workflow gauge is generally 0.15%, even 0.1%, by relevant criterion and regulatory requirements, for calibration operation effusion meter mobile standard set-up precision (uncertainty) should 0.05%, even more than 0.03%.And during general static weighing device normalization effusion meter, batch weighs at hundreds of kilogram to several tons, owing to static weighing device is in start and stop with when demarcating different flow point, pipe-line system operation pressure can change in puberty, if using the flexible pipe easily connected to be connected on static weighing device by movement method of standard table caliberating device, owing to operation pressure change causes pipeline to expand, the change of pipe volume can exceed well over the uncertain index of requirement to the impact of calibration result.Still do not have effective ways to realize mobile method of standard table caliberating device overall precision demarcation at present to trace to the source.
Summary of the invention
For defect present in above-mentioned prior art, the technical problem to be solved is to provide a kind of can implement on-line proving, and the portable flow on-line proving system can traced to the source the high accuracy entirety of mobile flow calibrating device to the effusion meter in using.
In order to solve above-mentioned technical problem, a kind of portable flow on-line proving system provided by the present invention, it is characterised in that: include mobile flow calibrating device, static weighing caliberating device；
Described mobile flow calibrating device includes base, and be separately mounted on base fluid intake valve, fluid issuing valve, reference flowmeter, data acquisition controller, pressure transmitter, temperature transmitter；
The fluid intake of described fluid intake valve is equipped with an inlet flange, the fluid issuing of fluid intake valve receives the fluid intake of reference flowmeter, the fluid issuing of reference flowmeter receives the fluid intake of fluid issuing valve through pressure transmitter, temperature transmitter, the fluid issuing of fluid issuing valve is equipped with an outlet(discharge) flange, and the flow signal output port of reference flowmeter is received the nominal data of data acquisition controller and gathered port；
Described static weighing caliberating device includes fluid container, fluid delivery pump, demarcation inlet tube, demarcation outlet, demarcates control valve, weighing container, weighing apparatus；
Described demarcation inlet tube, demarcation outlet are rigid piping systems, the fluid intake of described fluid delivery pump accesses fluid container through rigid piping systems, the fluid issuing of fluid delivery pump receives the fluid intake of demarcation inlet tube, the fluid issuing of demarcation inlet tube inlet flange in rigid piping systems receives mobile flow calibrating device through rigid piping systems；The fluid intake of demarcation outlet outlet(discharge) flange in rigid piping systems receives mobile flow calibrating device, the fluid issuing of demarcation outlet receives the fluid intake demarcating control valve through rigid piping systems, the fluid issuing demarcating control valve accesses weighing container through rigid piping systems, and described weighing container is placed on weighing apparatus；
In described mobile flow calibrating device, the bottom of base is equipped with the castor landed, and the castor on base can be lifted off multiple elevating levers on ground.
The portable flow on-line proving system that the present invention provides, the effusion meter worked on mobile flow calibrating device convection cell pipeline can be utilized to carry out on-line proving, and can utilize static weighing caliberating device that mobile flow calibrating device is carried out integral calibrating, achieve the high accuracy entirety to mobile flow calibrating device to trace to the source, and also utilize pressure transmitter, temperature transmitter carries out pressure compensation, temperature-compensating, the factor impacts on flow calibration such as installation and medium can be reduced, can accurately obtain the Surveying Actual Precision of target flow meter, improve reliability and the tractability of measurement.
Accompanying drawing explanation
Fig. 1 is the structural representation of the portable flow on-line proving system of the embodiment of the present invention；
Fig. 2 is the structural representation of the mobile flow calibrating device in the portable flow on-line proving system of the embodiment of the present invention；
Fig. 3 is the structural representation of the static weighing caliberating device in the portable flow on-line proving system of the embodiment of the present invention；
Fig. 4 is in the portable flow on-line proving system of the embodiment of the present invention, utilizes the effusion meter worked on mobile flow calibrating device convection cell pipeline to carry out the schematic diagram demarcated.
Detailed description of the invention
Illustrate embodiments of the invention are described in further detail below in conjunction with accompanying drawing; but the present embodiment is not limited to the present invention; the analog structure of every employing present invention and similar change thereof, all should list protection scope of the present invention in, and the pause mark in the present invention all represents the relation of sum.
As Figure 1-Figure 4, a kind of portable flow on-line proving system that the embodiment of the present invention is provided, it is characterised in that: include mobile flow calibrating device, static weighing caliberating device；
Described mobile flow calibrating device includes base 10, and be separately mounted on base 10 fluid intake valve 12, fluid issuing valve 13, reference flowmeter 11, data acquisition controller 14, pressure transmitter 15, temperature transmitter 16；
The fluid intake of described fluid intake valve 12 is equipped with an inlet flange 121, the fluid issuing of fluid intake valve 12 receives the fluid intake of reference flowmeter 11, the fluid issuing of reference flowmeter 11 receives the fluid intake of fluid issuing valve 13 through pressure transmitter 15, temperature transmitter 16, the fluid issuing of fluid issuing valve 13 is equipped with an outlet(discharge) flange 131, and the flow signal output port of reference flowmeter 11 is received the nominal data of data acquisition controller 14 and gathered port；
Described static weighing caliberating device includes fluid container 20, fluid delivery pump 21, demarcation inlet tube 22, demarcation outlet 23, demarcates control valve 24, weighing container 25, weighing apparatus 26；
Described demarcation inlet tube 22, demarcation outlet 23 are rigid piping systems, the fluid intake of described fluid delivery pump 21 accesses fluid container 20 through rigid piping systems, the fluid issuing of fluid delivery pump 21 receives the fluid intake of demarcation inlet tube 22 through rigid piping systems, the fluid issuing of demarcation inlet tube 22 inlet flange 121 in rigid piping systems receives mobile flow calibrating device；The fluid intake of demarcation outlet 23 outlet(discharge) flange 131 in rigid piping systems receives mobile flow calibrating device, the fluid issuing of demarcation outlet 23 receives the fluid intake demarcating control valve 24 through rigid piping systems, the fluid issuing demarcating control valve 24 accesses weighing container 25 through rigid piping systems, and described weighing container 25 is placed on weighing apparatus 26；
In described mobile flow calibrating device, the bottom of base 10 is equipped with the castor 17 landed, and the castor on base can be lifted off multiple elevating levers 18 on ground, arranging of castor can bring convenience to the movement of mobile flow calibrating device, arranging of elevating lever can regulate inlet flange 121 and the height of outlet(discharge) flange 131, inlet flange 121 and outlet(discharge) flange 131 can be achieved a butt joint easily with rigid piping systems, the most mobile flow calibrating device is played positioning action, offer convenience to operation.
In the embodiment of the present invention, described reference flowmeter uses Coriolis (Coriolis) mass flowmenter.
The embodiment of the present invention is applicable to the effusion meter worked is carried out on-line proving, and its using method is as follows:
nullStatic weighing caliberating device is utilized regularly mobile flow calibrating device to be carried out integral calibrating，When mobile flow calibrating device is carried out integral calibrating，Water or the liquid with testing medium characteristic close is loaded in fluid container in static weighing caliberating device，It is then turned on fluid delivery pump，Utilize the liquid in fluid delivery pump withdrawn fluid container，The liquid of fluid delivery pump output then sequentially passes through demarcation inlet tube、Mobile flow calibrating device、Demarcation outlet、It is flowed in weighing container after demarcating control valve，Weighing apparatus is utilized to measure the liquid gross mass entered in weighing container，According to measured liquid gross mass value, mobile flow calibrating device can be carried out integral calibrating，The impact installed reference flowmeter is eliminated by integral calibrating，After mobile flow calibrating device integral calibrating，Can be by the inlet flange in mobile flow calibrating device、Outlet(discharge) flange and the demarcation inlet tube in static weighing caliberating device、Demarcation outlet disengages，The effusion meter worked on i.e. available mobile flow calibrating device convection cell pipeline is demarcated；
nullThe effusion meter worked on mobile flow calibrating device convection cell pipeline is utilized to carry out timing signal，Utilize pipe fitting by the inlet flange in mobile flow calibrating device、Outlet(discharge) flange is coupled with on target pipeline by pipe fitting，And be allowed to concatenate with target flow meter to be calibrated，The fluid passing through target flow meter to be calibrated can all flow through the reference flowmeter in mobile flow calibrating device，Than on target pipeline as shown in Figure 3，A stop valve 33 it is provided with in the downstream of target flow meter 31 to be calibrated，And two bypass valves 32 have been split in the both sides of stop valve 33、34，A regulation valve 37 it is provided with in the downstream of bypass valve 34，Utilize flexible pipe 35 that the inlet flange in mobile flow calibrating device is received bypass valve 32，Utilize flexible pipe 36 that the outlet(discharge) flange in mobile flow calibrating device is received bypass valve 34，Then will regulation valve 37、Two bypass valves 32、34 and mobile flow calibrating device in fluid intake valve 12、Fluid issuing valve 13 is opened，And stop valve 33 cuts out，The fluid that can flow through target flow meter 31 to be calibrated can all flow through the reference flowmeter 11 in mobile flow calibrating device，Such that it is able to utilize reference flowmeter 11 that target flow meter 31 is demarcated，Regulation valve 37 by downstream can regulate the flow of required demarcation，Data acquisition controller 14 is for gathering the flow signal of reference flowmeter 11 output,And the discharge coefficient of the target flow meter 31 being calibrated is calculated according to collection value.
When spotting effusion meter 31, pressure when utilizing static weighing caliberating device that mobile flow calibrating device carries out integral calibrating can be with current operation pressure deviation, this deviation realizes compensating by the pressure transmitter 15 in mobile flow calibrating device, and the temperature transmitter 16 in mobile flow calibrating device is then for the impact on reference flowmeter of the compensating operation variations in temperature.
Claims (1)
1. a portable flow on-line proving system, it is characterised in that: include mobile flow calibrating device, static weighing caliberating device；
Described mobile flow calibrating device includes base, and be separately mounted on base fluid intake valve, fluid issuing valve, reference flowmeter, data acquisition controller, pressure transmitter, temperature transmitter；
The fluid intake of described fluid intake valve is equipped with an inlet flange, the fluid issuing of fluid intake valve receives the fluid intake of reference flowmeter, the fluid issuing of reference flowmeter receives the fluid intake of fluid issuing valve through pressure transmitter, temperature transmitter, the fluid issuing of fluid issuing valve is equipped with an outlet(discharge) flange, and the flow signal output port of reference flowmeter is received the nominal data of data acquisition controller and gathered port；
Described static weighing caliberating device includes fluid container, fluid delivery pump, demarcation inlet tube, demarcation outlet, demarcates control valve, weighing container, weighing apparatus；
Described demarcation inlet tube, demarcation outlet are rigid piping systems, the fluid intake of described fluid delivery pump accesses fluid container through rigid piping systems, the fluid issuing of fluid delivery pump receives the fluid intake of demarcation inlet tube, the fluid issuing of demarcation inlet tube inlet flange in rigid piping systems receives mobile flow calibrating device through rigid piping systems；The fluid intake of demarcation outlet outlet(discharge) flange in rigid piping systems receives mobile flow calibrating device, the fluid issuing of demarcation outlet receives the fluid intake demarcating control valve through rigid piping systems, the fluid issuing demarcating control valve accesses weighing container through rigid piping systems, and described weighing container is placed on weighing apparatus；
In described mobile flow calibrating device, the bottom of base is equipped with the castor landed, and the castor on base can be lifted off multiple elevating levers on ground.
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|---|---|---|---|
| CN201610320628.9A CN105823532A (en) | 2016-05-16 | 2016-05-16 | Mobile flow online calibrating system |
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| CN201610320628.9A CN105823532A (en) | 2016-05-16 | 2016-05-16 | Mobile flow online calibrating system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387265A (en) * | 2017-08-09 | 2019-02-26 | 中国石油化工股份有限公司 | Low temperature mass flowmenter performance testing device and method |
| CN110895203A (en) * | 2018-09-12 | 2020-03-20 | 北京振兴计量测试研究所 | On-site calibration method for turbine flowmeter of test bed of aerospace engine |
| CN113029303A (en) * | 2021-03-01 | 2021-06-25 | 北京和瑞储能科技有限公司 | Sealed weighing calibration system |
| CN113899431A (en) * | 2021-09-07 | 2022-01-07 | 上海裕凡实业有限公司 | Mobile flow online calibration system |
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| CN113899431A (en) * | 2021-09-07 | 2022-01-07 | 上海裕凡实业有限公司 | Mobile flow online calibration system |
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Application publication date: 20160803 |