WO2019000258A1 - Dispositif de détection de débitmètre à turbine à gaz et procédé de détection - Google Patents

Dispositif de détection de débitmètre à turbine à gaz et procédé de détection Download PDF

Info

Publication number
WO2019000258A1
WO2019000258A1 PCT/CN2017/090471 CN2017090471W WO2019000258A1 WO 2019000258 A1 WO2019000258 A1 WO 2019000258A1 CN 2017090471 W CN2017090471 W CN 2017090471W WO 2019000258 A1 WO2019000258 A1 WO 2019000258A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas turbine
flowmeter
flow
gas
verification
Prior art date
Application number
PCT/CN2017/090471
Other languages
English (en)
Chinese (zh)
Inventor
张丛
Original Assignee
深圳市樊溪电子有限公司
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 深圳市樊溪电子有限公司 filed Critical 深圳市樊溪电子有限公司
Publication of WO2019000258A1 publication Critical patent/WO2019000258A1/fr

Links

Images

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

Definitions

  • the invention relates to a detection technology of a flowmeter, in particular to a detection device and a detection method of a gas turbine flowmeter.
  • Turbine flowmeter is the main type of velocity flowmeter.
  • the impeller rotates under force, and its rotational speed is proportional to the average flow velocity of the pipeline.
  • the blade is periodic.
  • the cutting electromagnet generates magnetic lines of force and changes the magnetic flux of the coil.
  • a pulsating potential signal that is, an electric pulse signal
  • the frequency of the electric pulsating signal is proportional to the flow rate of the fluid to be measured.
  • Turbine flowmeters have the advantages of high precision, good repeatability, zero drift, and high turndown ratio.
  • Turbine flowmeters feature high-quality bearings and specially designed baffles, which greatly reduce wear and tear, are insensitive to peaks, and can provide reliable measurement variables even under harsh conditions.
  • the turbine flow meter output is pulsed, easy to digitize, the turbine flowmeter has low pressure loss, the blades are corrosion resistant, and the viscous and corrosive media can be measured.
  • the gas turbine flow meter is a precision flow measuring instrument that can be used to measure the flow and total amount of liquid in conjunction with the corresponding flow meter.
  • Gas turbine flowmeters are widely used in metrology and control systems in petroleum, chemical, metallurgical, scientific research and other fields. Gas turbine flow meters equipped with sanitary joints can be used in the pharmaceutical industry.
  • the working principle of the gas turbine flowmeter is: when the fluid to be measured flows through the sensor, the impeller in the sensor is rotated by the kinetic energy of the fluid, and the impeller periodically changes the magnetic resistance in the magnetoelectric induction system.
  • the value is such that the magnetic flux passing through the coil periodically changes to generate an electrical pulse signal, which is amplified by the amplifier and displayed or transmitted to a corresponding flow totalizer, PLC or host computer for flow or total measurement.
  • the basic structure of the gas turbine flow sensor is shown in Figure 1. It consists mainly of the housing, front guide frame, impeller, rear guide frame, compression ring, fueling system (above DN40) and amplifier or display converter.
  • the integrated gas turbine flowmeter is an explosion-proof design that displays total flow, instantaneous flow and flow full percentage.
  • the battery uses a long-lasting lithium battery.
  • the battery life of the single-function integrated meter can reach more than 5 years, and the battery life of the multi-function display meter can reach more than 12 months.
  • the integrated meter can display a large number of flow units, including cubic meters, gallons, liters, standard cubic meters, standard liters, etc., can set fixed pressure, temperature parameters to compensate for gas, and occasions where pressure and temperature parameters change little.
  • the meter can be used for fixed compensation integration.
  • gas turbine flowmeters have a single standard of measurement environmental conditions.
  • the verification procedures follow different artificial regulations and are not standardized enough to accurately determine the quality of the gas turbine flowmeter and the technical defects of calibration.
  • the object of the present invention is to provide a gas turbine flowmeter detecting device, which uses gas as a medium to verify, calibrate and inspect a gas flowmeter, including a cover body, a liquid tank, a telecommunication generator, a verification tank, a pressure compensation mechanism,
  • the splicer, the air source and the plurality of valves are further composed of a water level gauge and a plurality of test pipelines, wherein the hood and the liquid tank form a variable-volume sealed cavity, and the hood passes through the descending process
  • the pressure compensating mechanism maintains a constant value of the internal gas pressure of the sealed cavity, which does not vary with the depth at which the cover body is immersed in the sealing liquid, and the cover body has two baffles between the baffles
  • the volume is fixed by measuring the time that the two baffles have passed through the telecommunication generator in succession, The instantaneous flow rate of the gas turbine flow meter can be calculated.
  • the cover is movable.
  • the liquid tank is fixed.
  • a pulley, a guide post and an outer guide wheel mechanism are also included for varying the volume of the sealed cavity.
  • the object of the present invention is also achieved by a detection method of a gas turbine flowmeter, comprising the following steps:
  • the turbine flow meter and the front and rear straight pipe sections of the step (2) need to be installed coaxially.
  • the step (3) adjusts the flow point to a 70% flow point of the maximum flow for 5 minutes.
  • the step (4) sets four flow points, which are Qmin, 0.6Qmin, 0.4Qmax, and Qmax, respectively.
  • the mathematical model of the step (5) is to calculate the meter coefficient and the propagation rate of the i-th measuring flowmeter.
  • the device and method adopt a positive pressure method, and a certain volume of a standard gas flows through a turbine flowmeter, thereby realizing verification of the flowmeter, and the flow range of the flow itself is relatively small, and is suitable for verifying a flowmeter with a small diameter. It conforms to the state of the flowmeter in actual work and standardizes the verification work.
  • FIG. 1 is a schematic structural view of a gas turbine flow meter according to the prior art
  • FIG. 2 is a schematic structural view of a gas turbine flowmeter detecting device according to an embodiment of the present invention
  • FIG. 3 is a flow chart of a method for detecting a gas turbine flow meter in accordance with an embodiment of the present invention.
  • a gas turbine flow meter detecting device uses a gas as a medium to calibrate, calibrate and inspect a gas flow meter, including a cover 1, a liquid tank 2, a telecommunication generator 3, an assay tank 4, and a pressure.
  • the compensation mechanism 5, the splicer 6, the air source 7 and the plurality of valves 8, 9, 10, 11, 12, 13 are also composed of a water level gauge and a plurality of test pipelines (not shown), and the cover body can be Moving, the liquid tank is fixed, and the cover body and the liquid tank form a variable-volume sealed cavity, and the volume of the sealing cavity is changed by the pulley, the guide post and the outer guide wheel mechanism, and the pressure is passed during the falling of the cover body.
  • the compensation mechanism maintains the internal gas pressure of the sealed cavity to a certain value, which does not change according to the depth at which the cover body is immersed in the sealing liquid, and the cover body has two baffles, and the volume between the baffles is fixed, and the measurement is performed.
  • the instantaneous flow rate of the gas turbine flow meter can be calculated by the time that the two baffles pass through the telecommunication generator.
  • a gas turbine flow meter detection method including the following steps: (1) setting measurement conditions, including atmospheric temperature, atmospheric relative humidity, atmospheric pressure, medium temperature for verification, Power supply voltage, power supply frequency; (2) Under the specified measurement conditions, according to the JJG1037-2008 turbine flowmeter verification procedure, the turbine flowmeter is installed on the detection device, and the turbine flowmeter and the front and rear straight pipe sections need to be coaxially installed; (3) Using air as the verification medium, adjust the flow point to 70% of the maximum flow rate, run for 5 minutes, wait for the medium temperature, pressure and flow to stabilize and then perform formal verification; (4) Set multiple 1.5 according to the verification procedure.
  • the turbine flowmeter verifies the flow point and sets four flow points, which are Qmin, 0.6Qmin, 0.4Qmax, Qmax.
  • the ratio of the detected flowmeter pulse signal measured by jth point to the standard volume flow rate measured by the standard gas flow device at this point is taken as the meter coefficient measured at the jth point of the i-th point; (5) establishing a mathematical model And evaluating a relative uncertainty of the input amount of the detecting device of the gas turbine flow meter to determine a quality level of the gas turbine flow meter, and the mathematical model is for calculating the meter coefficient of the i-th measuring flowmeter to be detected and transmitting Rate.
  • K is the meter factor of the i-th measurement of the flowmeter to be inspected, (m 3 ) -1
  • N i is the number of pulses measured by the meter for the i-th measurement of the measured flow meter
  • V i is the cumulative flow rate of the i-th measuring device, m 3
  • the rate of transmission is:
  • the device and method adopt a positive pressure method, and a certain volume of standard gas flows through the turbine flowmeter, thereby realizing verification of the flowmeter, and the flow range of the flow itself is relatively small, and is suitable for verifying a flowmeter with a small diameter, conforming to the flowmeter.
  • the state of actual work standardizes the verification work.

Abstract

L'invention concerne un dispositif de détection de débitmètre à turbine à gaz utilisant un gaz en tant que milieu. Le dispositif de détection comprend : un corps de couvercle (1), un réservoir de liquide (2), un générateur de télécommunication (3), un réservoir de vérification (4), un mécanisme de compensation de pression (5), un raccord de réservoir (6), une source de gaz (7), une pluralité de vannes (8, 9, 10, 11, 12, 13), une jauge de niveau d'eau et une pluralité de pipelines de test. Le corps de couvercle (1) et le réservoir de liquide (2) constituent une cavité étanche à volume variable ; pendant la descente du corps de couvercle (1), la pression de gaz interne de la cavité étanche est maintenue à une valeur constante au moyen du mécanisme de compensation de pression (5), et ne change pas avec une profondeur du corps de couvercle (1) immergé dans un liquide d'étanchéité ; le corps de couvercle (1) est pourvu de deux déflecteurs, et le volume entre les déflecteurs est fixé ; un débit instantané peut être calculé en mesurant un temps durant lequel les deux déflecteurs traversent successivement le générateur de télécommunication (3). Un procédé de détection de débitmètre à turbine à gaz utilisant le dispositif de détection normalise le processus de détection.
PCT/CN2017/090471 2017-06-26 2017-06-28 Dispositif de détection de débitmètre à turbine à gaz et procédé de détection WO2019000258A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710494943.8A CN107131932A (zh) 2017-06-26 2017-06-26 一种气体涡轮流量计的检测装置及检测方法
CN201710494943.8 2017-06-26

Publications (1)

Publication Number Publication Date
WO2019000258A1 true WO2019000258A1 (fr) 2019-01-03

Family

ID=59735697

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/090471 WO2019000258A1 (fr) 2017-06-26 2017-06-28 Dispositif de détection de débitmètre à turbine à gaz et procédé de détection

Country Status (2)

Country Link
CN (1) CN107131932A (fr)
WO (1) WO2019000258A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113790781A (zh) * 2021-09-15 2021-12-14 中国航发沈阳黎明航空发动机有限责任公司 一种用于叶片水流量测试设备的在线校准方法
CN113819981A (zh) * 2021-10-11 2021-12-21 西安航天动力试验技术研究所 液氧煤油发动机试验用煤油流量不确定度评估装置及方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109520587B (zh) * 2018-12-11 2024-02-20 顺丰科技有限公司 包裹体积测量装置及方法
CN111854860B (zh) * 2019-04-26 2022-02-01 中国石油天然气股份有限公司 天然气流量计校准装置及方法
CN111854861B (zh) * 2019-04-26 2022-08-05 中国石油天然气股份有限公司 天然气流量计校准方法
CN111854858B (zh) * 2019-04-26 2022-02-01 中国石油天然气股份有限公司 确定环道涡轮工作标准装置工作性能的方法和装置
CN112572756A (zh) * 2020-12-11 2021-03-30 中国人民解放军63660部队 一种飞艇副气囊体积监测装置及方法
CN114578091B (zh) * 2022-05-06 2022-08-23 河南氢枫能源技术有限公司 一种加氢流量调节检测装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5259234A (en) * 1992-03-09 1993-11-09 General Electric Company Calibration system for air metering bellmouths
CN201145606Y (zh) * 2007-11-06 2008-11-05 中国计量学院 钟罩多种流量计自动检定装置
CN202092737U (zh) * 2011-05-30 2011-12-28 上海工业自动化仪表研究院 实现自核查功能的标准表法气体流量标准装置
CN203561409U (zh) * 2013-11-08 2014-04-23 阿自倍尔仪表（大连）有限公司 一种以钟罩式装置作为标准器检测气体流量计的检测装置
CN203964997U (zh) * 2014-07-17 2014-11-26 丹东科泰仪器仪表有限公司 一种多钟罩式气体流量计检定装置
CN104729637A (zh) * 2015-02-03 2015-06-24 浙江工业大学 一种涡轮流量计在线校准系统及校准方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5259234A (en) * 1992-03-09 1993-11-09 General Electric Company Calibration system for air metering bellmouths
CN201145606Y (zh) * 2007-11-06 2008-11-05 中国计量学院 钟罩多种流量计自动检定装置
CN202092737U (zh) * 2011-05-30 2011-12-28 上海工业自动化仪表研究院 实现自核查功能的标准表法气体流量标准装置
CN203561409U (zh) * 2013-11-08 2014-04-23 阿自倍尔仪表（大连）有限公司 一种以钟罩式装置作为标准器检测气体流量计的检测装置
CN203964997U (zh) * 2014-07-17 2014-11-26 丹东科泰仪器仪表有限公司 一种多钟罩式气体流量计检定装置
CN104729637A (zh) * 2015-02-03 2015-06-24 浙江工业大学 一种涡轮流量计在线校准系统及校准方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ZHANG, QI ET AL.: "Turbine Flow Meter Coefficient (gas) the Uncertainty of Measurement Results is Evaluated", METROLOGY & MEASUREMENT TECHNIQUE, vol. 39, no. 11, 30 November 2012 (2012-11-30), pages 59 - 60, ISSN: 1004-6941 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113790781A (zh) * 2021-09-15 2021-12-14 中国航发沈阳黎明航空发动机有限责任公司 一种用于叶片水流量测试设备的在线校准方法
CN113790781B (zh) * 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 一种用于叶片水流量测试设备的在线校准方法
CN113819981A (zh) * 2021-10-11 2021-12-21 西安航天动力试验技术研究所 液氧煤油发动机试验用煤油流量不确定度评估装置及方法
CN113819981B (zh) * 2021-10-11 2024-01-12 西安航天动力试验技术研究所 液氧煤油发动机试验用煤油流量不确定度评估装置及方法

Also Published As

Publication number Publication date
CN107131932A (zh) 2017-09-05

Similar Documents

Publication Publication Date Title
WO2019000258A1 (fr) Dispositif de détection de débitmètre à turbine à gaz et procédé de détection
WO2019000259A1 (fr) Dispositif de détection et procédé pour débitmètre à turbine à gaz de type à circulation
US7770459B2 (en) Differential pressure diagnostic for process fluid pulsations
CN204085645U (zh) 带有自校准结构的气体流量标准装置
CN103808381B (zh) 一种时差式超声波流量计的温度影响消除方法
US20110022335A1 (en) Real-time non-stationary flowmeter
JP2006500557A (ja) ２相の流体の流れの検出および測定
Pereira Flow meters: part 1
CA3042881A1 (fr) Ameliorations apportees ou se rapportant a la surveillance d'un ecoulement de fluide
CN112833998A (zh) 一种管道式液体流量计在线校准方法
Love Flow measurement
CN105203189A (zh) 液体流量计在线检测装置自校准方法
CN207585729U (zh) 一种大口径液体流量计在线校准装置
Sârbu Modern water flowmeters: Differential pressure flowmeters
CN101482429A (zh) 一种检定弯管流量计的装置
CN104280076A (zh) 一种高精度的大口径涡街流量计
CN219015378U (zh) 一种具有显示倾斜度的浮子流量计
CN116718802A (zh) 一种液体用标准l型皮托管的系数标定装置及方法
Kawakita et al. Pitometry as a validation tool for water flow measurement in large diameter pipelines
RU2641505C1 (ru) Информационно-измерительная система для измерения расхода и количества газа
Mattingly _ FIVE
CN101419085A (zh) 污水流量恒流检测系统
CN114323176A (zh) 大管道变组分气体质量流量测量方法
Cascetta et al. Water flow measurement in large bore pipes: An experimental comparison between two different types of insertion flowmeters
Orlova et al. Numerical Modelling of a Turbine Flow Meter Used as Part of the Hydrogen Compressor System

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17916377

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17916377

Country of ref document: EP

Kind code of ref document: A1