CN106500805A - A kind of appraisal procedure of gauge table flow straightener rectification effect - Google Patents

A kind of appraisal procedure of gauge table flow straightener rectification effect Download PDF

Info

Publication number
CN106500805A
CN106500805A CN201611267480.3A CN201611267480A CN106500805A CN 106500805 A CN106500805 A CN 106500805A CN 201611267480 A CN201611267480 A CN 201611267480A CN 106500805 A CN106500805 A CN 106500805A
Authority
CN
China
Prior art keywords
flow
diameter changing
gauge table
changing device
little
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201611267480.3A
Other languages
Chinese (zh)
Other versions
CN106500805B (en
Inventor
陈海燕
王兆杰
王智
陈红旗
张刚
汤川
黄浩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HEFEI RUNA METERING CO Ltd
Original Assignee
HEFEI RUNA METERING CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HEFEI RUNA METERING CO Ltd filed Critical HEFEI RUNA METERING CO Ltd
Priority to CN201611267480.3A priority Critical patent/CN106500805B/en
Publication of CN106500805A publication Critical patent/CN106500805A/en
Application granted granted Critical
Publication of CN106500805B publication Critical patent/CN106500805B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • G01F1/66—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 measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K17/00—Measuring quantity of heat
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K19/00—Testing or calibrating calorimeters

Abstract

The present invention provides a kind of appraisal procedure of gauge table flow straightener rectification effect, the evenness index of different tables before diameter changing device under flow of media path place plane flow velocity is calculated first, bring the speed parameter of diameter changing device before different tables into evenness index formula, calculate the velocity uniformity set of indexes, by being compared with evenness index ideally, meet ultimate value for 0 when, surface design commutator best results.The present invention can carry out quantitative accurate judgement to the quality of flow straightener rectification effect so that flow straightener structure is more rationally reliable, effectively reduces experiment number, shortens the R＆D cycle.

Description

A kind of appraisal procedure of gauge table flow straightener rectification effect
Technical field
The present invention relates to measuring equipment technical field, and in particular to a kind of assessment side of gauge table flow straightener rectification effect Method.
Background technology
The measuring equipment of pipeline internal medium flow is mainly by calculating the measurement pipe being passed to inside measuring equipment at present The velocity of medium of section obtains flow carrying out conversion, then is shown by outside display unit, and this crosses range request circulation Jie The flowing of matter is stable, but in actually used operating mode, measuring equipment front end is frequently present of the devices such as elbow, valve, filter, So that the fluidised form of medium changes, measuring accuracy is leveraged.In order to eliminate this impact, typically need to be in measuring equipment front end Longer flow straightener is installed to adjust medium fluidised form so as to have good stability under different applying working conditions.But installed The restriction in space, current flow straightener can not be oversize, so as to steady flow result nor highly desirable, have impact on the precision of metering.And The design process of flow straightener is quite time-consuming, needs to verify its structure through substantial amounts of experiment, this considerably increases the R＆D cycle, Launch opportunity can be delayed.
Content of the invention
In order to solve above-mentioned technical problem, the present invention provides a kind of appraisal procedure of gauge table flow straightener rectification effect, bag Include following steps：
1) evenness index of flow of media path place plane flow velocity under diameter changing device before different tables is calculated：
Calculation Plane is divided into some little faces, certain parameter value of calculation and the parameter are in the flat of whole Calculation Plane on little face Value of calculation compares the Discrete Distribution for obtaining, and formula is as follows：
Wherein ζ be evenness index, δfFor the calculating parameter value in little f-th face,Average computation parameter for whole big face Value, AfArea for little f-th face；
2) bring the speed parameter of diameter changing device before different tables into formula (1), calculate velocity uniformity set of indexes A= {ζ1,ζ2,…,ζn, wherein n ∈ q | q ＞ 1 and q ∈ N }；
Assume ζ1It is the velocity uniformity index ideally of endless straight length for gauge table front end direction of flow, ζ2It is the presence of the velocity uniformity index under diameter changing device, ζ for gauge table front end direction of flownFor gauge table front end direction of flow It is the presence of the velocity uniformity index under other diameter changing devices；
If 3) there is lim | ζ1-ζm|=0, wherein m ∈ [1, n], then commutator is qualified.
The diameter changing device includes elbow, valve and filter.
From above technical scheme, the present invention can carry out quantitative accurate judgement to the quality of flow straightener rectification effect, make Obtain flow straightener structure more rationally reliable, effectively reduce experiment number, shorten the R＆D cycle.
Specific embodiment
A kind of preferred implementation of the invention is described in detail below.
The appraisal procedure of the present invention, its applicable gauge table can be with measuring equipments such as calorimeter, Ultrasonic water meters, the gauge table The flow straightener used cooperatively including body, built-in measurement pipeline section and with measurement pipeline section, in the front end direction of flow of gauge table There is at least one bending change device or other reducing behavior devices, flow of media path under diameter changing device before the different tables of calculating The evenness index of place plane flow velocity, by being compared with evenness index ideally, meets ultimate value for 0 When, the commutator best results of surface design.
Plane uniformity index definition is as follows：
Calculation Plane is divided into some little faces, certain parameter value of calculation and the parameter are in the flat of whole Calculation Plane on little face Value of calculation compares the Discrete Distribution for obtaining, and formula is as follows：
Wherein ζ be evenness index, δfFor the calculating parameter value in little f-th face,Average computation parameter for whole big face Value, AfArea for little f-th face.
Bring the speed parameter of diameter changing device before different tables into formula (1), calculate velocity uniformity set of indexes A= {ζ1,ζ2,…,ζn, wherein n ∈ q | q ＞ 1 and q ∈ N }；
Assume ζ1It is the velocity uniformity index ideally of endless straight length for gauge table front end direction of flow, ζ2It is the presence of the velocity uniformity index under diameter changing device, ζ for gauge table front end direction of flownFor gauge table front end direction of flow It is the presence of the velocity uniformity index under other diameter changing devices；If there is lim | ζ1-ζm|=0, wherein m ∈ [1, n], then commutator Qualified.
The above embodiment is only that the preferred embodiment of the present invention is described, not the model to the present invention Enclose and be defined, on the premise of without departing from design spirit of the present invention, technical side of the those of ordinary skill in the art to the present invention Various modifications and improvement that case is made, all should fall in the protection domain of claims of the present invention determination.

Claims (2)

1. a kind of appraisal procedure of gauge table flow straightener rectification effect, it is characterised in that comprise the steps：
1) evenness index of flow of media path place plane flow velocity under diameter changing device before different tables is calculated：
Calculation Plane is divided into some little faces, the average meter of certain parameter value of calculation and the parameter in whole Calculation Plane on little face Calculation value compares the Discrete Distribution for obtaining, and formula is as follows：
ζ = 1 - Σ f | δ f - δ ‾ | A f 2 | δ ‾ | Σ f A f - - - ( 1 )
Wherein ζ be evenness index, δfFor the calculating parameter value in little f-th face,For the average computation parameter value in whole big face, Af Area for little f-th face；
2) bring the speed parameter of diameter changing device before different tables into formula (1), calculate velocity uniformity set of indexes A={ ζ1, ζ2,…,ζn, wherein n ∈ q | q ＞ 1 and q ∈ N }；
Assume ζ1It is the velocity uniformity index ideally of endless straight length for gauge table front end direction of flow, ζ2For Gauge table front end direction of flow is the presence of the velocity uniformity index under diameter changing device, ζnIt is to deposit for gauge table front end direction of flow Velocity uniformity index under other diameter changing devices；
If 3) there is lim | ζ1-ζm|=0, wherein m ∈ [1, n], then commutator is qualified.
2. appraisal procedure according to claim 1, it is characterised in that the diameter changing device includes elbow, valve and filtration Device.
CN201611267480.3A 2016-12-31 2016-12-31 A kind of appraisal procedure of gauge table flow straightener rectification effect Active CN106500805B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611267480.3A CN106500805B (en) 2016-12-31 2016-12-31 A kind of appraisal procedure of gauge table flow straightener rectification effect

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611267480.3A CN106500805B (en) 2016-12-31 2016-12-31 A kind of appraisal procedure of gauge table flow straightener rectification effect

Publications (2)

Publication Number Publication Date
CN106500805A true CN106500805A (en) 2017-03-15
CN106500805B CN106500805B (en) 2019-02-22

Family

ID=58333500

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611267480.3A Active CN106500805B (en) 2016-12-31 2016-12-31 A kind of appraisal procedure of gauge table flow straightener rectification effect

Country Status (1)

Country Link
CN (1) CN106500805B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012225684A (en) * 2011-04-15 2012-11-15 Nippon Soken Inc Apparatus and method for evaluating pressure apparatus
CN103759774A (en) * 2014-01-13 2014-04-30 浙江威星智能仪表股份有限公司 Method for designing rectifier of ultrasonic flowmeter
CN104573365A (en) * 2015-01-09 2015-04-29 华南理工大学 Performance evaluation method of flow conditioner
JP2015148525A (en) * 2014-02-07 2015-08-20 愛知時計電機株式会社 ultrasonic gas meter
CN105444828A (en) * 2015-08-21 2016-03-30 宁波市鹏盛科技发展有限公司 Design method for rectifier of ultrasonic flowmeter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012225684A (en) * 2011-04-15 2012-11-15 Nippon Soken Inc Apparatus and method for evaluating pressure apparatus
CN103759774A (en) * 2014-01-13 2014-04-30 浙江威星智能仪表股份有限公司 Method for designing rectifier of ultrasonic flowmeter
JP2015148525A (en) * 2014-02-07 2015-08-20 愛知時計電機株式会社 ultrasonic gas meter
CN104573365A (en) * 2015-01-09 2015-04-29 华南理工大学 Performance evaluation method of flow conditioner
CN105444828A (en) * 2015-08-21 2016-03-30 宁波市鹏盛科技发展有限公司 Design method for rectifier of ultrasonic flowmeter

Also Published As

Publication number Publication date
CN106500805B (en) 2019-02-22

Similar Documents

Publication Publication Date Title
CN103353908B (en) A kind of pipe resistance coefficient Method for Accurate Calculation based on numerical computations
CN103808381B (en) A kind of temperature influence eliminating method of transit-time ultrasonic flow meter
CN203785713U (en) Ultrasonic flow metering system with function of controlling laminar-turbulent transitional flow
US20150134275A1 (en) Steam flow rate metering device and metering method therefor
RU2392588C2 (en) Method and system for multipath ultrasonic measurement of flow parametres and partly developed flow profiles
Zheng et al. Study of acoustic transducer protrusion and recess effects on ultrasonic flowmeter measurement by numerical simulation
CN103940495B (en) Low discharge ultrasonic flowmeter method for estimating error based on streamline
Zhang et al. Fluid flow characteristics for shell side of double-pipe heat exchanger with helical fins and pin fins
JP6436408B1 (en) Pump flow measurement device
CN102494742A (en) Method for on-line calibration of large-caliber flow meter
Adamkowski et al. Uncertainty analysis of liquid flow rate measurement with the pressure–time method
CN106500805A (en) A kind of appraisal procedure of gauge table flow straightener rectification effect
CN103323066B (en) A kind of low liquid holdup gas-liquid two-phase flow measuring method and measuring system
CN110426088B (en) Flow monitoring method, device and equipment and readable storage medium
Yu et al. Laser Doppler anemometry measurements of laminar flow in helical pipes
Fei et al. Numerical simulation of multi-path ultrasonic flowmeter: Ultrasonic path error analysis
CN104179670B (en) Using the measuring method of water pump assembly fractional energy savings after re-manufacturing technology
RU2296959C1 (en) Method for calibration of volumetric flow meters of heat counter and device for realization of said method
CN111812015B (en) Method for measuring multiphase flow corrosion characteristic parameters of bent pipe part of petrochemical device
Shannak et al. Experimental and theoretical investigation on the discharge characteristic of stratified two-phase flow
Yuan et al. Hydraulic design procedure for bypass flow meters using a pipe bend
CN105890684A (en) Novel setting method for determining sound channel positions by adopting Gauss-Jacobi polynomial
Okoro Emeka et al. Offshore gas well flow and orifice metering system: An overview
Roman et al. Investigation of Ultrasonic Flowmeter Error in Conditions of Distortion of Flow Structure
Yang et al. Optimize the Rectifier Structure to Improve the Accuracy of Gas Ultrasonic Flowmeter Under Low Flow Conditions

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information

Address after: 230011 Anhui province Changfeng Shuangfeng Economic Development Zone Xia Feng East Road Hefei City No. 039

Applicant after: The intelligent equipment Limited by Share Ltd

Address before: 230011 Anhui province Changfeng Shuangfeng Economic Development Zone Xia Feng East Road Hefei City No. 039

Applicant before: Hefei Runa Metering Co., Ltd.

CB02 Change of applicant information
GR01 Patent grant
GR01 Patent grant