CN105203189A - Self-calibration method of fluid flowmeter online detection device - Google Patents
Self-calibration method of fluid flowmeter online detection device Download PDFInfo
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- CN105203189A CN105203189A CN201410266379.0A CN201410266379A CN105203189A CN 105203189 A CN105203189 A CN 105203189A CN 201410266379 A CN201410266379 A CN 201410266379A CN 105203189 A CN105203189 A CN 105203189A
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Abstract
The invention provides a self-calibration method of a fluid flowmeter online detection device. The fluid flowmeter online detection device calibrated through the self-calibration method of the fluid flowmeter online detection device comprises a standard stainless steel straight pipe section, a detected portable ultrasonic flowmeter and a flow measuring and monitoring part. The method comprises the steps that 1, before the fluid flowmeter online detection device conducts on-site flow detection, verification or calibration is conducted on the flow measuring and monitoring part; 2, the fluid flowmeter online detection device is started, and meanwhile flow signals of the flow measuring and monitoring part and the detected portable ultrasonic flowmeter are read; 3, correction is conducted on the detected portable ultrasonic flowmeter according to the flow value of the flow measuring and monitoring part. According to the self-calibration method of the fluid flowmeter online detection device, the traceability gap of the fluid flowmeter online detection device is made up, and the accuracy and the reliability of the online detection device flow measurement are guaranteed.
Description
Technical field
The present invention relates to the calibration steps of device, particularly relate to a kind of liquid flowmeter on-line measuring device method for self-calibrating.
Background technology
The heavy caliber flow instrument applied in petroleum chemical enterprise has the types such as full packages formula electromagnetic flowmeter, ultrasonic flowmeter, orifice plate differential pressure flowmeter usually, and technique caliber can reach 1300mm.These heavy caliber flowing meters often cannot dismantle censorship because of field condition or objective factor restriction, thus can not guaranteed flow meter measured values accurate, reliable.In recent years, utilize portable ultraphonic flowmeter on-line checkingi heavy caliber water ga(u)ge advantage day by day obvious, it has when not affecting tested instrument and normally working, and carries out external clamping installation and detects tested instrument, do not hinder flowing, without features such as pressure loss amounts.
For ensureing accurate, the reliability of measurement data, need to carry out periodic reinvestigation calibration to ultrasonic flowmeter on-line measuring device.Therefore, from the science of metering, accurately, fairness, by the enforcement of on-line measuring device method for self-calibrating, to ensureing that on-line measuring device carries out the accurate, reliably significant of data in the forward and backward and testing process of on-line checkingi.We have invented a kind of new liquid flowmeter on-line measuring device method for self-calibrating for this reason, solve above technical matters.
Summary of the invention
The object of this invention is to provide a kind of can to on-line measuring device carry out use forward and backward and use in traffic alignment and monitoring so that accurate, the reliable liquid flowmeter on-line measuring device method for self-calibrating of guaranteed flow measurement result.
Object of the present invention realizes by following technical measures: liquid flowmeter on-line measuring device method for self-calibrating, the liquid flowmeter on-line measuring device that this liquid flowmeter on-line measuring device method for self-calibrating is calibrated comprises standard stainless steel straight length, tested portable ultraphonic flowmeter and flow measurement and monitor component, this liquid flowmeter on-line measuring device method for self-calibrating comprises: step 1, before liquid flowmeter on-line measuring device carries out on-the-spot flow detection, this flow measurement and monitor component are carried out examining and determine or calibrating; Step 2, start liquid flowmeter on-line measuring device, reads the flow signal of this flow measurement and monitor component and this tested portable ultraphonic flowmeter simultaneously; And step 3, this tested portable ultraphonic flowmeter is revised by the flow value according to this flow measurement and monitor component.
Object of the present invention also realizes by following technical measures:
In step 1, by this flow measurement and monitor component dismounting, high primary standard device carries out examining and determine or calibrating, after verification, is loaded the fixed position of this standard stainless steel straight length.
In step 2, liquid flowmeter on-line measuring device, in flow measurement process, by host computer by pulse collection, reads the flow signal of this flow measurement and monitor component and this tested portable ultraphonic flowmeter simultaneously.
In step 3, host computer by comparing this tested portable ultraphonic flowmeter institute flow measurement value and this flow measurement and monitor component institute flow measurement value, by the error formula error of calculation, according to the indicating value of this tested portable ultraphonic flowmeter of error correction.
This liquid flowmeter on-line measuring device method for self-calibrating also comprises, and after step 3, treats that on-the-spot liquid flowmeter on-line measuring device detects complete, this flow measurement and monitor component dismounting is again carried out examining and determine or calibrating.
Liquid flowmeter on-line measuring device method for self-calibrating in the present invention, with flow measurement and monitor component institute flow measurement value for standard value, tested portable ultraphonic flowmeter is revised by the flow value according to flow measurement and monitor component, reaches the object to liquid flowmeter on-line measuring device real time calibration.The method compensate for the blank of liquid flowmeter on-line measuring device magnitude tracing, ensure that accurate, the reliability of on-line measuring device flow measurement.
Accompanying drawing explanation
The structural drawing of the liquid flowmeter on-line measuring device that Fig. 1 calibrates for liquid flowmeter on-line measuring device method for self-calibrating of the present invention;
Fig. 2 is the process flow diagram of a specific embodiment of liquid flowmeter on-line measuring device method for self-calibrating of the present invention.
Embodiment
For making above and other object of the present invention, feature and advantage can become apparent, cited below particularly go out preferred embodiment, and coordinate institute's accompanying drawings, be described in detail below.
As shown in Figure 1, the structural drawing of liquid flowmeter on-line measuring device calibrated for liquid flowmeter on-line measuring device method for self-calibrating of the present invention of Fig. 1.This liquid flowmeter on-line measuring device method for self-calibrating is made up of standard stainless steel straight length 1, tested portable ultraphonic flowmeter 2, technique measuring channel 3, flow measurement and monitor component 4 and portable ultraphonic flow-meter probe sensor 5.
Standard stainless steel straight length 1 is the known stainless steel straight tube of external diameter, wall thickness and material.Tested portable ultraphonic flowmeter 2 is connected on standard stainless steel straight length 1, and the portable ultraphonic flow-meter probe sensor 5 of tested portable ultraphonic flowmeter 2 is positioned on standard stainless steel straight length 1, for on-line measurement fluid flow.
Flow measurement and monitor component 4 are positioned on standard stainless steel straight length 1, measure fluid flow with tested portable ultraphonic flowmeter 2 simultaneously.In one embodiment, flow measurement and monitor component 4 are for freely installing, dismantle, so that regularly superior standard set-up is traced to the source (accuracy or the higher liquid flow standard device of uncertainty, as national water Large flow station Static Volumetric Method liquid flow standard device).
Technique measuring channel 3 is connected to tested portable ultraphonic flowmeter 2, for being the on-the-spot pipeline applied.
As shown in Figure 2, Fig. 2 is the process flow diagram of a specific embodiment of liquid flowmeter on-line measuring device method for self-calibrating of the present invention.
In step 201, before liquid flowmeter on-line measuring device carries out on-the-spot flow detection, flow measurement in Fig. 1 and monitor component 4 can be dismantled, at high primary standard device (as national oil rock gas Large flow station Dongying substation Static mass method liquid flow standard device, its expanded uncertainty is 0.03%, maximum flow 1000m3/h) on carry out examining and determine or calibrating, loaded the fixed position of pick-up unit standard stainless steel straight length 1 after verification.Flow process enters into step 202.
In step 202, start liquid flowmeter on-line measuring device, liquid flowmeter on-line measuring device, in flow measurement process, by host computer by pulse collection, can read the flow signal of flow measurement and monitor component 4 and tested portable ultraphonic flowmeter 2 simultaneously.Flow process enters into step 203.
In step 203, with flow measurement and monitor component 4 flow measurement values for standard value, tested portable ultraphonic flowmeter 2 is revised according to the flow value of flow measurement and monitor component 4 by host computer, reaches the object to liquid flowmeter on-line measuring device real time calibration.In one embodiment, host computer by more tested portable ultraphonic flowmeter 2 flow measurement values and flow measurement and monitor component 4 flow measurement values, by the error formula error of calculation, foundation error correction tested portable ultraphonic flowmeter 2 indicating value.Flow process enters into step 204.
In step 204, treat that field instrument detects complete, flow measurement and monitor component 4 can be dismantled and again carry out examining and determine, calibrating (stability is verified, and can regularly carry out), to ensure the reliability of calibrator unit 4.Flow process terminates.
The whole flow measurement process implementation self calibration of liquid flowmeter on-line measuring device, ensure that accurate, the reliability of on-line measuring device flow measurement.
Claims (5)
1. liquid flowmeter on-line measuring device method for self-calibrating, it is characterized in that, the liquid flowmeter on-line measuring device that this liquid flowmeter on-line measuring device method for self-calibrating is calibrated comprises standard stainless steel straight length, tested portable ultraphonic flowmeter and flow measurement and monitor component, and this liquid flowmeter on-line measuring device method for self-calibrating comprises:
Step 1, before liquid flowmeter on-line measuring device carries out on-the-spot flow detection, is undertaken examining and determine or calibrating by this flow measurement and monitor component;
Step 2, start liquid flowmeter on-line measuring device, reads the flow signal of this flow measurement and monitor component and this tested portable ultraphonic flowmeter simultaneously; And
Step 3, this tested portable ultraphonic flowmeter is revised by the flow value according to this flow measurement and monitor component.
2. liquid flowmeter on-line measuring device method for self-calibrating according to claim 1, it is characterized in that, in step 1, by this flow measurement and monitor component dismounting, high primary standard device carries out examining and determine or calibrating, after verification, is loaded the fixed position of this standard stainless steel straight length.
3. liquid flowmeter on-line measuring device method for self-calibrating according to claim 1, it is characterized in that, in step 2, liquid flowmeter on-line measuring device is in flow measurement process, by host computer by pulse collection, read the flow signal of this flow measurement and monitor component and this tested portable ultraphonic flowmeter simultaneously.
4. liquid flowmeter on-line measuring device method for self-calibrating according to claim 1, it is characterized in that, in step 3, host computer is by comparing this tested portable ultraphonic flowmeter institute flow measurement value and this flow measurement and monitor component institute flow measurement value, by the error formula error of calculation, according to the indicating value of this tested portable ultraphonic flowmeter of error correction.
5. liquid flowmeter on-line measuring device method for self-calibrating according to claim 1, it is characterized in that, this liquid flowmeter on-line measuring device method for self-calibrating also comprises, after step 3, treat that on-the-spot liquid flowmeter on-line measuring device detects complete, this flow measurement and monitor component dismounting are carried out examining and determine or calibrating again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410266379.0A CN105203189A (en) | 2014-06-16 | 2014-06-16 | Self-calibration method of fluid flowmeter online detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410266379.0A CN105203189A (en) | 2014-06-16 | 2014-06-16 | Self-calibration method of fluid flowmeter online detection device |
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| CN105203189A true CN105203189A (en) | 2015-12-30 |
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| CN201410266379.0A Pending CN105203189A (en) | 2014-06-16 | 2014-06-16 | Self-calibration method of fluid flowmeter online detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556430A (en) * | 2016-10-17 | 2017-04-05 | 金卡高科技股份有限公司 | A kind of gas Actual flow test system and method with self-calibration function |
| CN107289985A (en) * | 2017-06-21 | 2017-10-24 | 中国科学院工程热物理研究所 | On-line proving and the dynamic measurement system and method for compensation |
| CN109313099A (en) * | 2018-05-31 | 2019-02-05 | 歌尔股份有限公司 | Test device and calibration method |
-
2014
- 2014-06-16 CN CN201410266379.0A patent/CN105203189A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556430A (en) * | 2016-10-17 | 2017-04-05 | 金卡高科技股份有限公司 | A kind of gas Actual flow test system and method with self-calibration function |
| CN107289985A (en) * | 2017-06-21 | 2017-10-24 | 中国科学院工程热物理研究所 | On-line proving and the dynamic measurement system and method for compensation |
| CN109313099A (en) * | 2018-05-31 | 2019-02-05 | 歌尔股份有限公司 | Test device and calibration method |
| CN109313099B (en) * | 2018-05-31 | 2023-11-14 | 歌尔股份有限公司 | Test device and calibration method |
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Application publication date: 20151230 |
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| WD01 | Invention patent application deemed withdrawn after publication |