WO2019000258A1 - Gas turbine flowmeter detection device and detection method - Google Patents

Gas turbine flowmeter detection device and detection method 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
detecting
flow
cover
Prior art date
Application number
PCT/CN2017/090471
Other languages
French (fr)
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
Priority to CN201710494943.8A priority Critical patent/CN107131932A/en
Priority to CN201710494943.8 priority
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/en

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00Testing or calibrating apparatus for measuring volume, volume flow or liquid level, or for metering by volume
    • G01F25/0007Testing or calibrating apparatus for measuring volume, volume flow or liquid level, or for metering by volume for measuring volume flow

Abstract

A gas turbine flowmeter detection device using gas as a medium. The detection device comprises: a cover body (1), a liquid tank (2), a telecommunication generator (3), a verification tank (4), a pressure compensation mechanism (5), a tank connector (6), a gas source (7), a plurality of valves (8, 9, 10, 11, 12, 13), a water level gauge, and a plurality of test pipelines. The cover body (1) and the liquid tank (2) constitute a volume-variable sealed cavity; during descent of the cover body (1), the internal gas pressure of the sealed cavity is maintained at a constant value by means of the pressure compensation mechanism (5), and does not change with a depth of the cover body (1) immersing in a sealing liquid; the cover body (1) is provided with two baffles, and the volume between the baffles is fixed; an instantaneous flow rate can be calculated by measuring a time that the two baffles pass through in sequence the telecommunication generator (3). A gas turbine flowmeter detection method using the detection device standardizes detection process.

Description

一种气体涡轮流量计的检测装置及检测方法Detection device and detection method of gas turbine flowmeter 技术领域Technical field
本发明涉及流量计的检测技术,特别是一种气体涡轮流量计的检测装置及检测方法。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.
背景技术Background technique
涡轮流量计是速度式流量计中的主要种类,当被测流体流过涡轮流量传感器时,在流体的作用下,叶轮受力旋转,其转速与管道平均流速成正比,同时,叶片周期性的切割电磁铁产生磁力线,改变线圈的磁通量,根据电磁感应原理,在线圈内将感应出脉动的电势信号,即电脉冲信号,此电脉动信号的频率与被测流体的流量成正比。涡轮流量计具有精度高、重复性好、无零点漂移、高量程比的优点。涡轮流量计拥有高质量轴承、特别设计的导流片,因此极大降低了磨损,对峰值不敏感,甚至恶劣的条件下也可以给出可靠的测量变量。涡轮流量计输出信号为脉冲,易于数字化,涡轮流量计压力损失小,叶片能防腐,可以测量粘稠和腐蚀性的介质。Turbine flowmeter is the main type of velocity flowmeter. When the fluid to be measured flows through the turbine flow sensor, under the action of the fluid, the impeller rotates under force, and its rotational speed is proportional to the average flow velocity of the pipeline. At the same time, the blade is periodic. The cutting electromagnet generates magnetic lines of force and changes the magnetic flux of the coil. According to the principle of electromagnetic induction, a pulsating potential signal, that is, an electric pulse signal, is induced in the coil, and 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.
气体涡轮流量计是一种精密流量测量仪表,与相应的流量积算仪表配套可用于测量液体的流量和总量。气体涡轮流量计广泛用于石油、化工、冶金、科研等领域的计量、控制系统。配备有卫生接头的气体涡轮流量计可以应用于制药行业。气体涡轮流量计工作原理为:当被测流体流经传感器时,传感器内的叶轮借助于流体的动能而产生旋转,叶轮即周期性地改变磁电感应系统中的磁阻 值,使通过线圈的磁通量周期性地发生变化而产生电脉冲信号,经放大器放大后进行显示或传送至相应的流量积算仪表、PLC或上位计算机,进行流量或总量的测量。气体涡轮流量传感器的基本结构如图1所示,它主要由壳体、前导向架、叶轮、后导向架、压紧圈、加油系统(DN40以上)和放大器或显示转换器等组成。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.
一体化气体涡轮流量计结构为防爆设计,可以显示流量总量,瞬时流量和流量满度百分比。电池采用长效锂电池,单功能积算表电池使用寿命可达5年以上,多功能显示表电池使用寿命也可达到12个月以上。一体化表头可以显示的流量单位众多,有立方米,加仑,升,标准立方米,标准升等,可以设定固定压力、温度参数对气体进行补偿,对压力和温度参数变化不大的场合,可使用该仪表进行固定补偿积算。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.
然而,目前气体涡轮流量计存在测量环境条件单一不标准,检定规程遵循不同的人为规定,不够标准化,从而无法准确判定气体涡轮流量计的质量,也无法对其校准的技术缺陷。However, at present, 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.
发明内容Summary of the invention
本发明的目的在于提供一种气体涡轮流量计的检测装置,采用气体为介质,对气体流量计进行检定、校准和检验,包括罩体、液槽,电讯发生器、检定槽、压力补偿机构、接槽器、气源以及多个阀门组成,还包括水位计和多条试验管路,所述罩体和所述液槽构成一个容积可变的密封空腔,所述罩体下降过程中通过所述压力补偿机构使得所述密封空腔的内部气体压力保持一定值,不随所述罩体浸入密封液中的深度而变化,所述罩体具有两个挡板,所述挡板之间的容积是固定的,通过测量所述两个挡板先后通过所述电讯发生器经历的时间, 可计算出所述气体涡轮流量计的瞬时流速。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.
优选的,所述罩体是可移动的。Preferably, the cover is movable.
优选的,所述液槽是固定的。Preferably, the liquid tank is fixed.
优选的,还包括滑轮,导柱和外导轮机构,用于改变所述密封空腔的容积。Preferably, a pulley, a guide post and an outer guide wheel mechanism are also included for varying the volume of the sealed cavity.
本发明的目的还通过一种气体涡轮流量计的检测方式实现,包括如下步骤:The object of the present invention is also achieved by a detection method of a gas turbine flowmeter, comprising the following steps:
(1)设定测量条件,包括大气温度,大气相对湿度,大气压力,检定用介质温度,电源电压,电源频率;(1) Set the measurement conditions, including atmospheric temperature, atmospheric relative humidity, atmospheric pressure, medium temperature for verification, power supply voltage, and power frequency;
(2)在规定的测量条件下,按照JJG1037-2008涡轮流量计检定规程,将涡轮流量计安装在所述检测装置上;(2) installing the turbine flowmeter on the detecting device according to the JJG1037-2008 turbine flowmeter verification procedure under the specified measurement conditions;
(3)以空气为检定介质,调节流量点至最大流量的一定百分比处,运行一定时间,等待介质温度、压力和流量稳定后进行正式检定;(3) Using air as the verification medium, adjust the flow point to a certain percentage of the maximum flow rate, run for a certain period of time, and wait for the medium temperature, pressure and flow rate to stabilize after formal verification;
(4)依据检定规程,设定多个1.5级的涡轮流量计检定流量点,将在第i点第j次测得的被检流量计脉冲信号与标准气体流量装置在该点该次测得得标准体积流量之比作为第i点第j次测量的仪表系数;(4) According to the verification procedure, set a plurality of 1.5-stage turbine flowmeter verification flow points, and measure the detected flowmeter pulse signal and the standard gas flow device measured at the jth point of the i-th point at the point. The ratio of the standard volume flow rate is taken as the meter factor of the jth measurement at the i-th point;
(5)建立数学模型,评价所述气体涡轮流量计的检测装置输入量的相对不确定度从而确定所述气体涡轮流量计的质量等级。(5) Establishing a mathematical model for evaluating the relative uncertainty of the input of the detection device of the gas turbine flow meter to determine the quality level of the gas turbine flow meter.
优选的,所述步骤(2)所述涡轮流量计与前后直管段需要同轴安装。Preferably, the turbine flow meter and the front and rear straight pipe sections of the step (2) need to be installed coaxially.
优选的,所述步骤(3)调节流量点至最大流量的70%流量点,运行5分钟。Preferably, the step (3) adjusts the flow point to a 70% flow point of the maximum flow for 5 minutes.
优选的,所述步骤(4)设定四个流量点,分别为Qmin,0.6Qmin,0.4Qmax,Qmax。Preferably, the step (4) sets four flow points, which are Qmin, 0.6Qmin, 0.4Qmax, and Qmax, respectively.
优选的,所述步骤(4)对于量程比<20:1的流量计,分界流量0.6Qmin=0.2Qmax。Preferably, the step (4) is for a flowmeter with a range ratio <20:1, and the boundary flow is 0.6Qmin=0.2Qmax.
优选的,所述步骤(5)的数学模型为计算第i次测量被检流量计的仪表系数以及传播率。Preferably, the mathematical model of the step (5) is to calculate the meter coefficient and the propagation rate of the i-th measuring flowmeter.
该装置和方法采用正压法,用一定体积量的标准气体流经涡轮流量计,从而实现对流量计的检定,其本身流量范围比较小,适合检定口径较小的流量计, 符合流量计在实际工作中的状态,将检定工作标准化。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.
根据下文结合附图对本发明具体实施例的详细描述,本领域技术人员将会更加明了本发明的上述以及其他目的、优点和特征。The above as well as other objects, advantages and features of the present invention will become apparent to those skilled in the <
附图说明DRAWINGS
后文将参照附图以示例性而非限制性的方式详细描述本发明的一些具体实施例。附图中相同的附图标记标示了相同或类似的部件或部分。本领域技术人员应该理解,这些附图未必是按比例绘制的。本发明的目标及特征考虑到如下结合附图的描述将更加明显,附图中:Some specific embodiments of the present invention will be described in detail, by way of example, and not limitation, The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. The objects and features of the present invention will become more apparent in consideration of the following description in conjunction with the accompanying drawings.
图1为根据现有技术的气体涡轮流量计结构示意图;1 is a schematic structural view of a gas turbine flow meter according to the prior art;
图2为根据本发明实施例的气体涡轮流量计检测装置结构示意图;2 is a schematic structural view of a gas turbine flowmeter detecting device according to an embodiment of the present invention;
图3为根据本发明实施例的气体涡轮流量计检测方法流程图。3 is a flow chart of a method for detecting a gas turbine flow meter in accordance with an embodiment of the present invention.
具体实施方式Detailed ways
参见附图2,一种气体涡轮流量计的检测装置,采用气体为介质,对气体流量计进行检定、校准和检验,包括罩体1、液槽2,电讯发生器3、检定槽4、压力补偿机构5、接槽器6、气源7以及多个阀门8,9,10,11,12,13组成,还包括水位计和多条试验管路(图中没有示出),罩体可移动,液槽是固定的,罩体和液槽构成一个容积可变的密封空腔,通过滑轮,导柱和外导轮机构来改变所述密封空腔的容积,罩体下降过程中通过压力补偿机构使得所述密封空腔的内部气体压力保持一定值,不随所述罩体浸入密封液中的深度而变化,罩体具有两个挡板,挡板之间的容积是固定的,通过测量两个挡板先后通过电讯发生器经历的时间,可计算出气体涡轮流量计的瞬时流速。Referring to Figure 2, 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.
参见附图3,一种气体涡轮流量计的检测方式实现,包括如下步骤:(1)设定测量条件,包括大气温度,大气相对湿度,大气压力,检定用介质温度, 电源电压,电源频率;(2)在规定的测量条件下,按照JJG1037-2008涡轮流量计检定规程,将涡轮流量计安装在所述检测装置上,涡轮流量计与前后直管段需要同轴安装;(3)以空气为检定介质,调节流量点至最大流量的70%流量点,运行5分钟,等待介质温度、压力和流量稳定后进行正式检定;(4)依据检定规程,设定多个1.5级的涡轮流量计检定流量点,设定四个流量点,分别为Qmin,0.6Qmin,0.4Qmax,Qmax,对于量程比<20:1的流量计,分界流量0.6Qmin=0.2Qmax,将在第i点第j次测得的被检流量计脉冲信号与标准气体流量装置在该点该次测得得标准体积流量之比作为第i点第j次测量的仪表系数;(5)建立数学模型,评价所述气体涡轮流量计的检测装置输入量的相对不确定度从而确定所述气体涡轮流量计的质量等级,数学模型为计算第i次测量被检流量计的仪表系数以及传播率。Referring to Figure 3, a gas turbine flow meter detection method is implemented, 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. For flowmeters with a range ratio <20:1, the boundary flow is 0.6Qmin=0.2Qmax, which will be 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.
其中K=Ni/Vi,                          (1)Where K=N i /V i , (1)
K为第i次测量被检流量计的仪表系数,(m3)-1 K is the meter factor of the i-th measurement of the flowmeter to be inspected, (m 3 ) -1
Ni为第i次测量被测流量计显示仪表测得的脉冲数;N i is the number of pulses measured by the meter for the i-th measurement of the measured flow meter;
Vi为第i次测量装置的累积流量,m3 V i is the cumulative flow rate of the i-th measuring device, m 3
传播率为:The rate of transmission is:
Figure PCTCN2017090471-appb-000001
Figure PCTCN2017090471-appb-000001
在大气温度为(23.5±1)oc,大气相对湿度为(38±1)%RH,大气压(94.5±0.5)kPa,检定用介质温度(18.5±0.1)oc,电源电压为220V,电源频率50Hz的测量环境条件下,用一台0.5-120m3/h,DN25mm的气体涡轮流量计进行检定,流量选择在最大流量70%处测量60秒,累积流量250L,用工控测量设备连续测量6次得到一组测量列,获得单次试验标准差为10.13,取3平均值不确定度为0.15%,结合厂家给出的该气体涡轮流量计的扩展不确定度和系数,得到合成相对标准不确定度为0.21%。然而在其他给定测量流量点进行测量分别获得上述数值后,去测量接过重复性作为最大值,扩展不确定度为0.42%,在该扩展不确定度之 下的为标准合格气体涡轮流量计。At atmospheric temperature (23.5±1) oc, atmospheric relative humidity is (38±1)% RH, atmospheric pressure (94.5±0.5) kPa, medium temperature for verification (18.5±0.1) oc, power supply voltage is 220V, power supply frequency is 50Hz Under the measurement environment conditions, a 0.5-120m 3 /h, DN25mm gas turbine flowmeter is used for verification. The flow rate is selected for 60 seconds at the maximum flow rate of 70%, the cumulative flow rate is 250L, and the industrial control measuring device continuously measures 6 times. For a set of measurement columns, the standard deviation of single test is 10.13, and the average uncertainty of 3 is 0.15%. Combined with the extended uncertainty and coefficient of the gas turbine flowmeter given by the manufacturer, the relative standard uncertainty of synthesis is obtained. It is 0.21%. However, after the above values are obtained by measuring at other given measurement flow points, the measurement repeatability is taken as the maximum value, and the expansion uncertainty is 0.42%. Under the extended uncertainty, the standard qualified gas turbine flowmeter is used. .
该装置和方法采用正压法,用一定体积量的标准气体流经涡轮流量计,从而实现对流量计的检定,其本身流量范围比较小,适合检定口径较小的流量计,符合流量计在实际工作中的状态,将检定工作标准化。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.
虽然本发明已经参考特定的说明性实施例进行了描述,但是不会受到这些实施例的限定而仅仅受到附加权利要求的限定。本领域技术人员应当理解可以在不偏离本发明的保护范围和精神的情况下对本发明的实施例能够进行改动和修改。 The present invention has been described with reference to the specific illustrative embodiments, and is not limited by the scope of the appended claims. It will be appreciated by those skilled in the art that the embodiments of the invention can be modified and modified without departing from the scope and spirit of the invention.

Claims (10)

  1. 一种气体涡轮流量计的检测装置,采用气体为介质,对气体流量计进行检定、校准和检验,其特征在于:包括罩体(1)、液槽(2),电讯发生器(3)、检定槽(4)、压力补偿机构(5)、接槽器(6)、气源(7)以及多个阀门(8,9,10,11,12,13)组成,还包括水位计和多条试验管路,所述罩体(1)和所述液槽(2)构成一个容积可变的密封空腔,所述罩体(1)下降过程中通过所述压力补偿机构(5)使得所述密封空腔的内部气体压力保持一定值,不随所述罩体(1)浸入密封液中的深度而变化,所述罩体(1)具有两个挡板,所述挡板之间的容积是固定的,通过测量所述两个挡板先后通过所述电讯发生器(3)经历的时间,可计算出所述气体涡轮流量计的瞬时流速。A gas turbine flowmeter detecting device uses a gas as a medium to perform verification, calibration and inspection on a gas flowmeter, and is characterized in that it comprises a cover body (1), a liquid tank (2), a telecommunication generator (3), The calibration tank (4), the pressure compensating mechanism (5), the splicer (6), the gas source (7) and a plurality of valves (8, 9, 10, 11, 12, 13) are also composed of a water level gauge and a plurality of a test tube, the cover body (1) and the liquid tank (2) constitute a variable-volume sealed cavity, and the cover body (1) is lowered by the pressure compensating mechanism (5) during the lowering process The internal gas pressure of the sealed cavity is maintained at a constant value that does not vary with the depth at which the cover (1) is immersed in the sealing liquid, the cover (1) having two baffles between the baffles The volume is fixed and the instantaneous flow rate of the gas turbine flow meter can be calculated by measuring the time that the two baffles pass through the telecommunication generator (3).
  2. 根据权利要求1所述的一种气体涡轮流量计的检测装置,其特征在于:所述罩体(1)是可移动的。A detecting device for a gas turbine flow meter according to claim 1, characterized in that the cover (1) is movable.
  3. 根据权利要求1所述的一种气体涡轮流量计的检测装置,其特征在于:所述液槽(2)是固定的。A detecting device for a gas turbine flow meter according to claim 1, characterized in that the liquid tank (2) is fixed.
  4. 根据权利要求1所述的一种气体涡轮流量计的检测装置,其特征在于:还包括滑轮,导柱和外导轮机构,用于改变所述密封空腔的容积。A detecting device for a gas turbine flow meter according to claim 1, further comprising a pulley, a guide post and an outer guide wheel mechanism for changing a volume of said sealed cavity.
  5. 一种使用如权利要求1-4中任一一个检测装置进行的气体涡轮流量计的检测方法,其特征在于包括如下步骤:A method for detecting a gas turbine flowmeter using the detecting device according to any one of claims 1 to 4, characterized in that it comprises the following steps:
    (1)设定测量条件,包括大气温度,大气相对湿度,大气压力,检定用介质温度,电源电压,电源频率;(1) Set the measurement conditions, including atmospheric temperature, atmospheric relative humidity, atmospheric pressure, medium temperature for verification, power supply voltage, and power frequency;
    (2)在规定的测量条件下,按照JJG1037-2008涡轮流量计检定规程,将涡轮流量计安装在所述检测装置上;(2) installing the turbine flowmeter on the detecting device according to the JJG1037-2008 turbine flowmeter verification procedure under the specified measurement conditions;
    (3)以空气为检定介质,调节流量点至最大流量的一定百分比处,运行一定时间,等待介质温度、压力和流量稳定后进行正式检定;(3) Using air as the verification medium, adjust the flow point to a certain percentage of the maximum flow rate, run for a certain period of time, and wait for the medium temperature, pressure and flow rate to stabilize after formal verification;
    (4)依据检定规程,设定多个1.5级的涡轮流量计检定流量点,将在第i点第j次测得的被检流量计脉冲信号与标准气体流量装置在该点该次测得得标 准体积流量之比作为第i点第j次测量的仪表系数;(4) According to the verification procedure, set a plurality of 1.5-stage turbine flowmeter verification flow points, and measure the detected flowmeter pulse signal and the standard gas flow device measured at the jth point of the i-th point at the point. Worth The ratio of the quasi-volumetric flow rate is taken as the meter factor of the jth measurement at the i-th point;
    (5)建立数学模型,评价所述气体涡轮流量计的检测装置输入量的相对不确定度从而确定所述气体涡轮流量计的质量等级。(5) Establishing a mathematical model for evaluating the relative uncertainty of the input of the detection device of the gas turbine flow meter to determine the quality level of the gas turbine flow meter.
  6. 根据权利要求5所述的气体涡轮流量计的检测方法,其特征在于:所述步骤(2)所述涡轮流量计与前后直管段需要同轴安装。The method for detecting a gas turbine flowmeter according to claim 5, wherein the turbine flowmeter and the front and rear straight pipe sections of the step (2) need to be coaxially mounted.
  7. 根据权利要求5所述的气体涡轮流量计的检测方法,其特征在于:所述步骤(3)调节流量点至最大流量的70%流量点,运行5分钟。The method of detecting a gas turbine flow meter according to claim 5, wherein the step (3) adjusts the flow point to a flow rate of 70% of the maximum flow rate for 5 minutes.
  8. 根据权利要求5所述的气体涡轮流量计的检测方法,其特征在于:所述步骤(4)设定四个流量点,分别为Qmin,0.6Qmin,0.4Qmax,Qmax。The method for detecting a gas turbine flowmeter according to claim 5, wherein the step (4) sets four flow points, which are Qmin, 0.6Qmin, 0.4Qmax, and Qmax, respectively.
  9. 根据权利要求5所述的气体涡轮流量计的检测方法,其特征在于:所述步骤(4)对于量程比<20:1的流量计,分界流量0.6Qmin=0.2Qmax。The method for detecting a gas turbine flowmeter according to claim 5, wherein said step (4) is for a flowmeter having a range ratio of <20:1, and a boundary flow rate of 0.6 Qmin = 0.2 Qmax.
  10. 根据权利要求5所述的气体涡轮流量计的检测方法,其特征在于:所述步骤(5)的数学模型为计算第i次测量被检流量计的仪表系数以及传播率。 The method of detecting a gas turbine flowmeter according to claim 5, wherein the mathematical model of the step (5) is to calculate the meter coefficient and the propagation rate of the flowmeter to be inspected for the i-th measurement.
PCT/CN2017/090471 2017-06-26 2017-06-28 Gas turbine flowmeter detection device and detection method WO2019000258A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201710494943.8A CN107131932A (en) 2017-06-26 2017-06-26 The detection means and detection method of a kind of gas turbine meter
CN201710494943.8 2017-06-26

Publications (1)

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

Family

ID=59735697

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/090471 WO2019000258A1 (en) 2017-06-26 2017-06-28 Gas turbine flowmeter detection device and detection method

Country Status (2)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111854860A (en) * 2019-04-26 2020-10-30 中国石油天然气股份有限公司 Natural gas flowmeter calibrating device and method
CN111854861A (en) * 2019-04-26 2020-10-30 中国石油天然气股份有限公司 Natural gas flowmeter calibration method and device
CN111854858A (en) * 2019-04-26 2020-10-30 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

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 (en) * 2007-11-06 2008-11-05 中国计量学院 Automatic detecting device of bell cover multiple flowmeters
CN202092737U (en) * 2011-05-30 2011-12-28 上海工业自动化仪表研究院 Standard meter type gas flow standard device capable of self-check
CN203561409U (en) * 2013-11-08 2014-04-23 阿自倍尔仪表(大连)有限公司 Detector for detecting gas flow meter with bell jar type device serving as standard device
CN203964997U (en) * 2014-07-17 2014-11-26 丹东科泰仪器仪表有限公司 A kind of many bell jar type gas flowmeters calibrating installation
CN104729637A (en) * 2015-02-03 2015-06-24 浙江工业大学 Turbine flowmeter online calibration system and method

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 (en) * 2007-11-06 2008-11-05 中国计量学院 Automatic detecting device of bell cover multiple flowmeters
CN202092737U (en) * 2011-05-30 2011-12-28 上海工业自动化仪表研究院 Standard meter type gas flow standard device capable of self-check
CN203561409U (en) * 2013-11-08 2014-04-23 阿自倍尔仪表(大连)有限公司 Detector for detecting gas flow meter with bell jar type device serving as standard device
CN203964997U (en) * 2014-07-17 2014-11-26 丹东科泰仪器仪表有限公司 A kind of many bell jar type gas flowmeters calibrating installation
CN104729637A (en) * 2015-02-03 2015-06-24 浙江工业大学 Turbine flowmeter online calibration system and method

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 *

Also Published As

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

Similar Documents

Publication Publication Date Title
WO2019000259A1 (en) Detection device and method for circulating type gas turbine flowmeter
WO2019000258A1 (en) Gas turbine flowmeter detection device and detection method
US7770459B2 (en) Differential pressure diagnostic for process fluid pulsations
EP2176470B1 (en) Differential pressure diagnostic for process fluid pulsations
JP2006500557A (en) Detection and measurement of two-phase fluid flow
CN204085645U (en) With the gas flow standard device of self calibration structure
Pereira Flow meters: part 1
US20110022335A1 (en) Real-time non-stationary flowmeter
CN106768103A (en) A kind of method of the automatic prover time deviation of ultrasonic flowmeter
Mattingly Volume flow measurements
CN203811492U (en) Closed type pipeline cycle erosion test device
Tezuka et al. Assessment of effects of pipe surface roughness and pipe elbows on the accuracy of meter factors using the ultrasonic pulse Doppler method
Hardy et al. Flow measurement methods and applications
CA3042881A1 (en) Improvements in or relating to the monitoring of fluid flow
CN105203189A (en) Self-calibration method of fluid flowmeter online detection device
CN208333627U (en) A kind of fluid flowmeter on-line checking self-calibrating device
CN101482429A (en) Apparatus for checking elbow meter
Sârbu Modern water flowmeters: Differential pressure flowmeters
CN211904339U (en) On-line detection standard device for small-flow gas flowmeter
RU2641505C1 (en) Information and measuring system for measurement of flow and quantity of gas
CN207585729U (en) A kind of heavy caliber fluid flowmeter on-line calibration device
Mattingly _ FIVE
CN101419085A (en) Sewerage constant flow detecting system
CN204575150U (en) The one-piece type electromagnetic flowmeter of temperature and pressure
CN204831487U (en) With truck scale to online calibration device of flowmeter

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