CN206959918U - An orifice plate vortex street gas-liquid metering device - Google Patents
An orifice plate vortex street gas-liquid metering device Download PDFInfo
- Publication number
- CN206959918U CN206959918U CN201720765168.0U CN201720765168U CN206959918U CN 206959918 U CN206959918 U CN 206959918U CN 201720765168 U CN201720765168 U CN 201720765168U CN 206959918 U CN206959918 U CN 206959918U
- Authority
- CN
- China
- Prior art keywords
- gas
- liquid
- orifice plate
- vortex
- flow
- 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.)
- Active
Links
Landscapes
- Measuring Volume Flow (AREA)
Abstract
本实用新型公开了一种孔板涡街气液计量装置，包括依次连接的旋流气液混合器、孔板节流装置以及涡街流量计，所述旋流气液混合器用于将气液两相流均匀混合成雾状流，所述孔板节流装置用于对所述气液两相流产生差压，所述涡街流量计用于测量混合流体工况体积流量，所述旋流气液混合器、孔板节流装置以及涡街流量计分别连接至用于气、液流量计算、输出和显示的气液流量计算仪。本实用新型结构简单、成本低、计量精度较高。该装置安装于气井，可实时掌握气井生产状况，指导对气井及时有效的开展排水采气等生产措施，保障气井正常生产。
The utility model discloses an orifice vortex gas-liquid metering device, which comprises a swirl gas-liquid mixer connected in sequence, an orifice throttling device and a vortex flowmeter, and the swirl gas-liquid mixer is used for gas-liquid two-phase The flow is uniformly mixed into a mist flow, the orifice throttling device is used to generate a differential pressure on the gas-liquid two-phase flow, the vortex flowmeter is used to measure the volume flow rate of the mixed fluid working condition, and the swirl gas-liquid The mixer, the orifice throttling device and the vortex flowmeter are respectively connected to the gas-liquid flow calculator for gas and liquid flow calculation, output and display. The utility model has the advantages of simple structure, low cost and high measuring precision. The device is installed in the gas well, which can grasp the production status of the gas well in real time, guide the timely and effective implementation of drainage and gas production measures for the gas well, and ensure the normal production of the gas well.
Description
技术领域technical field
本实用新型属于流量测量的技术领域，具体涉及一种应用于气井的气液两相不分离测量装置。The utility model belongs to the technical field of flow measurement, in particular to a gas-liquid two-phase non-separation measuring device applied to gas wells.
背景技术Background technique
传统的气田单井计量主要采用气液分离计量工艺，流程复杂，投资高。近年来，国内气田应用了各类气液两相不分离计量装置，直接用于气井井口气液两相计量，国内现有流量计通过测量孔板差压波动幅度值(即计算差压方根的相对方差)来计算含液率，进而得出气液流量，但由于流体机械杂志、气流波动、差压传感器精度等因素影响，差压波动幅度值不能完全反应含液率，导致计量误差增大，适用范围有限。Traditional gas field single well metering mainly adopts gas-liquid separation metering technology, which has complicated process and high investment. In recent years, various gas-liquid two-phase non-separation metering devices have been used in domestic gas fields, which are directly used for gas-liquid two-phase metering at the wellhead of gas wells. Relative variance) to calculate the liquid cut rate, and then get the gas-liquid flow rate, but due to factors such as fluid machinery magazines, air flow fluctuations, differential pressure sensor accuracy and other factors, the differential pressure fluctuation amplitude value cannot fully reflect the liquid cut rate, resulting in increased measurement errors , the scope of application is limited.
实用新型内容Utility model content
本实用新型所要解决的技术问题在于针对上述现有技术中的不足，提供一种孔板涡街气液两相计量装置，解决气井气液两相在线计量难题，代替传统的分离计量工艺，简化工艺流程，降低投资。The technical problem to be solved by the utility model is to provide an orifice vortex street gas-liquid two-phase metering device to solve the problem of gas-liquid two-phase online metering in gas wells, replace the traditional separation metering process, and simplify Technological process, reduce investment.
本实用新型采用以下技术方案：The utility model adopts the following technical solutions:
一种孔板涡街气液计量装置，包括依次连接的旋流气液混合器、孔板节流装置以及涡街流量计，所述旋流气液混合器用于将气液两相流均匀混合成雾状流，所述孔板节流装置用于对所述气液两相流产生差压，所述涡街流量计用于测量混合流体工况体积流量，所述旋流气液混合器、孔板节流装置以及涡街流量计分别连接至用于气、液流量计算、输出和显示的气液流量计算仪。An orifice vortex gas-liquid metering device, comprising a swirl gas-liquid mixer connected in sequence, an orifice throttling device and a vortex flowmeter, the swirl gas-liquid mixer is used to uniformly mix the gas-liquid two-phase flow into mist shape flow, the orifice throttling device is used to generate differential pressure for the gas-liquid two-phase flow, the vortex flowmeter is used to measure the volume flow rate of the mixed fluid working condition, the swirl gas-liquid mixer, orifice plate The throttling device and the vortex flowmeter are respectively connected to the gas-liquid flow calculator for gas and liquid flow calculation, output and display.
进一步的，所述旋流气液混合器和孔板节流装置之间设置有压力变送器，所述孔板节流装置上设置有差压变送器，在所述孔板节流装置和涡街流量计之间设置有温度变送器，所述压力变送器、差压变送器、温度变送器和涡街流量计分别通过信号线与所述气液流量计算仪连接。Further, a pressure transmitter is arranged between the swirl gas-liquid mixer and the orifice throttling device, and a differential pressure transmitter is arranged on the orifice throttling device, between the orifice throttling device and the orifice throttling device. A temperature transmitter is arranged between the vortex flowmeters, and the pressure transmitter, differential pressure transmitter, temperature transmitter and vortex flowmeter are respectively connected to the gas-liquid flow calculator through signal lines.
进一步的，所述气液流量计算仪设置在所述差压变送器内。Further, the gas-liquid flow calculator is set in the differential pressure transmitter.
进一步的，所述旋流气液混合器、孔板节流装置和涡街流量计采用法兰连接。Further, the swirl gas-liquid mixer, the orifice throttling device and the vortex flowmeter are connected by flanges.
进一步的，所述旋流气液混合器、涡街流量计和孔板节流装置采用法兰连接。Further, the swirl gas-liquid mixer, vortex flowmeter and orifice throttling device are connected by flanges.
进一步的，所述旋流气液混合器的进气端经过截断阀与气井井口连接。Further, the inlet end of the cyclone gas-liquid mixer is connected to the wellhead of the gas well through a shut-off valve.
进一步的，所述涡街流量计经过闸阀与采气管线连接。Further, the vortex flowmeter is connected to the gas production pipeline through a gate valve.
与现有技术相比，本实用新型至少具有以下有益效果：Compared with the prior art, the utility model has at least the following beneficial effects:
本实用新型孔板涡街气液计量装置通过将孔板流量计与涡街流量计串联测量气液两相流量，并在装置前段设置有旋流气液混合器，使气液两相均匀混合近似雾状流，使计算出的混合流体工况平均密度更加接近真实值，提高流量测量精度。The orifice vortex street gas-liquid metering device of the utility model measures the gas-liquid two-phase flow by connecting the orifice plate flowmeter and the vortex flowmeter in series, and a swirl gas-liquid mixer is arranged in the front section of the device, so that the gas-liquid two-phase is evenly mixed and approximated. The mist flow makes the calculated average density of the mixed fluid condition closer to the real value and improves the flow measurement accuracy.
进一步的，设置压力变送器、差压变送器和温度变送器分别用于测量流体静压、流体流过节流装置产生的前后差压，流体温度。Further, a pressure transmitter, a differential pressure transmitter and a temperature transmitter are provided to measure the hydrostatic pressure, the differential pressure before and after the fluid flows through the throttling device, and the fluid temperature, respectively.
进一步的，气液流量计算仪可以模块化设置在差压变送器内，简化结构。Furthermore, the gas-liquid flow calculator can be modularly set in the differential pressure transmitter, which simplifies the structure.
进一步的，旋流气液混合器、孔板节流装置和涡街流量计采用法兰依次连接，且孔板节流装置和涡街流量计可互换安装，便于根据现场气井井口实际尺寸进行安装。Furthermore, the swirl gas-liquid mixer, the orifice throttling device and the vortex flowmeter are sequentially connected by flanges, and the orifice throttling device and the vortex flowmeter can be installed interchangeably, which is convenient for installation according to the actual size of the gas well head on site .
下面通过附图和实施例，对本实用新型的技术方案做进一步的详细描述。The technical solutions of the present utility model will be further described in detail through the drawings and embodiments below.
附图说明Description of drawings
图1为本实用新型孔板涡街气液计量装置结构图；Fig. 1 is the structural diagram of the orifice plate vortex street gas-liquid metering device of the utility model;
图2为本实用新型孔板涡街气液计量装置安装流程。Figure 2 is the installation process of the orifice vortex street gas-liquid metering device of the utility model.
其中：1.旋流气液混合器；2.孔板节流装置；3.压力变送器；4.差压变送器；5.温度变送器；6.涡街流量计；7.气液流量计算仪；8.信号线。Among them: 1. Swirl gas-liquid mixer; 2. Orifice throttling device; 3. Pressure transmitter; 4. Differential pressure transmitter; 5. Temperature transmitter; 6. Vortex flowmeter; 7. Gas Liquid flow calculator; 8. Signal line.
具体实施方式Detailed ways
请参阅图1，本实用新型公开了一种孔板涡街气液两相计量装置，包括用于将气液两相流均匀混合成雾状流的旋流气液混合器1、用于产生差压的孔板节流装置2以及测量混合流体工况体积流量的涡街流量计6。Please refer to Fig. 1, the utility model discloses a gas-liquid two-phase metering device in an orifice vortex street, including a swirl gas-liquid mixer 1 for uniformly mixing the gas-liquid two-phase flow into a mist flow, Pressure orifice throttling device 2 and vortex flowmeter 6 for measuring the volume flow rate of the mixed fluid working condition.
所述旋流气液混合器1、孔板节流装置2和涡街流量计6采用法兰依次连接，所述旋流气液混合器1和孔板节流装置2之间设置有压力变送器3，所述孔板节流装置2上设置有差压变送器4，在所述孔板节流装置2和涡街流量计6之间设置温度变送器5，The swirl gas-liquid mixer 1, the orifice throttling device 2 and the vortex flowmeter 6 are sequentially connected by flanges, and a pressure transmitter is arranged between the swirl gas-liquid mixer 1 and the orifice throttling device 2 3. The orifice throttling device 2 is provided with a differential pressure transmitter 4, and a temperature transmitter 5 is arranged between the orifice throttling device 2 and the vortex flowmeter 6,
混合流体通过所述孔板节流装置2产生差压，通过压力变送器3、差压变送器4、温度变送器5和涡街流量计6分别测量流体静压、孔板前后差压、温度以及流体工况体积流量参数，所述压力变送器3、差压变送器4、温度变送器5和涡街流量计6分别通过信号线8将测量信号传输至气液流量计算仪7，通过所述气液流量计算仪7进行气、液流量计算、输出和显示。The mixed fluid passes through the orifice throttling device 2 to generate a differential pressure, and the hydrostatic pressure and the difference between the front and rear of the orifice are respectively measured by the pressure transmitter 3, the differential pressure transmitter 4, the temperature transmitter 5 and the vortex flowmeter 6. Pressure, temperature, and volumetric flow parameters of fluid working conditions, the pressure transmitter 3, differential pressure transmitter 4, temperature transmitter 5 and vortex flowmeter 6 transmit the measurement signal to the gas-liquid flow rate through the signal line 8 respectively The calculator 7 is used to calculate, output and display the gas and liquid flow rates through the gas-liquid flow calculator 7 .
优选的，气液流量计算仪7可模块化内置在所述差压变送器4表头内，便于简化结构。Preferably, the gas-liquid flow calculator 7 can be modularly built in the head of the differential pressure transmitter 4, which is convenient for simplifying the structure.
优选的，所述孔板节流装置2和涡街流量计6可互换位置安装。Preferably, the orifice throttling device 2 and the vortex flowmeter 6 can be installed in interchangeable positions.
请参阅图1和图2，本实用新型孔板涡街气液两相计算方法如下：Please refer to Fig. 1 and Fig. 2, the gas-liquid two-phase calculation method of the orifice plate vortex street of the utility model is as follows:
S1、从气井井筒出来的气液两相流体经一系列弯头、阀门后进入本装置，首先通过旋流气液混合器1，使气液混合近似雾状流；S1. The gas-liquid two-phase fluid coming out of the wellbore of the gas well enters the device through a series of elbows and valves, and first passes through the swirl gas-liquid mixer 1 to make the gas-liquid mixture approximate to a mist flow;
S2、然后经过孔板节流装置和涡街流量计，气液混合流体通过所述孔板节流装置通过测得的差压、压力、温度参数，可得出混合流体质量流量；S2, then through the orifice throttling device and the vortex flowmeter, the gas-liquid mixed fluid passes through the orifice throttling device through the measured differential pressure, pressure, and temperature parameters, and the mass flow rate of the mixed fluid can be obtained;
所述孔板节流装置的质量流量Qm见下式：The mass flow rate Q of the orifice throttling device is shown in the following formula:
其中，C为流出系数，β为节流装置直径比，ε膨胀系数，d为孔板孔径，当节流装置一定，流体压力、温度已知时，以上参数可直接计算得出；ρ为气液混合流体工况平均密度，是未知量；ΔΡ为差压，通过差压传感器测得。Among them, C is the outflow coefficient, β is the diameter ratio of the throttling device, ε expansion coefficient, and d is the aperture of the orifice plate. When the throttling device is fixed and the fluid pressure and temperature are known, the above parameters can be directly calculated; ρ is the gas The average density of the liquid mixed fluid working condition is an unknown quantity; ΔP is the differential pressure, which is measured by a differential pressure sensor.
所述涡街流量计可提供混合流体工况体积流量Qv，流体通过孔板节流装置与涡街流量计的流量应相等，根据式(1)可得到下式：The vortex flowmeter can provide the volume flow rate Q v of the mixed fluid working condition, and the flow rate of the fluid passing through the orifice throttling device and the vortex flowmeter should be equal. According to formula (1), the following formula can be obtained:
其中，C为流出系数，β为节流装置直径比，ε膨胀系数，d为孔板孔径，当节流装置一定，流体压力、温度已知时，以上参数可直接计算得出；ρ为气液混合流体工况平均密度，是未知量；ΔΡ为差压，通过差压传感器测得。Among them, C is the outflow coefficient, β is the diameter ratio of the throttling device, ε expansion coefficient, and d is the aperture of the orifice plate. When the throttling device is fixed and the fluid pressure and temperature are known, the above parameters can be directly calculated; ρ is the gas The average density of the liquid mixed fluid working condition is an unknown quantity; ΔP is the differential pressure, which is measured by a differential pressure sensor.
S3、设置的压力传感器、差压传感器、温度传感器、涡街流量计将测得的流体压力、孔板前后差压、流体温度、流体工况体积流量参数通过信号线传输至气液流量计算仪；S3. The set pressure sensor, differential pressure sensor, temperature sensor, and vortex flowmeter transmit the measured fluid pressure, differential pressure before and after the orifice plate, fluid temperature, and fluid operating condition volume flow parameters to the gas-liquid flow calculator through the signal line ;
S4、气液流量计算仪按照流量计算方法计算输出气、液各相体积流量、流体压力、温度等参数。S4. The gas-liquid flow calculator calculates the output gas and liquid phase volume flow, fluid pressure, temperature and other parameters according to the flow calculation method.
根据式(2)可计算出混合流体工况平均密度ρ见下式：According to the formula (2), the average density ρ of the mixed fluid working condition can be calculated as follows:
混合流体工况体积流量为气、液单相工况体积流量之和Qv如下：The volume flow rate of the mixed fluid working condition is the sum of the volume flow rate Q v of the gas and liquid single-phase working conditions as follows:
Qv＝Q气+Q液 (4)Q v = Q gas + Q liquid (4)
混合流体质量流量为气、液单相质量流量之和Qvρ如下：The mass flow rate of the mixed fluid is the sum of the gas and liquid single-phase mass flow rate Q v ρ as follows:
Qvρ＝Q气ρ气+Q液ρ液 (5)Q v ρ=Q gas ρ gas +Q liquid ρ liquid (5)
气、液单相的标况密度可通过取样测出，根据压力、温度传感器测得的压力、温度参数，可计算出气、液单相工况密度ρ气、ρ液，由式(4)、(5)联合求解可计算出气、液各相工况体积流量。The standard condition density of gas and liquid single-phase can be measured by sampling. According to the pressure and temperature parameters measured by pressure and temperature sensors, the gas and liquid single-phase working condition densities ρgas and ρliquid can be calculated. Formula (4), (5) The joint solution can calculate the volume flow of each phase of gas and liquid.
其中，ρ为混合流体工况平均密度，ρ气、ρ液为气、液单相工况密度，Qv为气、液单相工况体积流量之和，根据已知的流体压力、温度参数，由式(6)、(7)即可得出气液工况体积流量。Among them, ρ is the average density of the mixed fluid working condition, ρ gas and ρ liquid are the density of gas and liquid single-phase working conditions, Q v is the sum of the volume flow rate of gas and liquid single-phase working conditions, according to the known fluid pressure and temperature parameters , the gas-liquid volume flow rate can be obtained from equations (6) and (7).
整个计量装置的好处在于：结构简单、成本低、计量精度较高。该装置安装于气井，可实时掌握气井生产状况，指导对气井及时有效的开展排水采气等生产措施，保障气井正常生产。The advantages of the entire metering device are: simple structure, low cost, and high metering accuracy. The device is installed in the gas well, which can grasp the production status of the gas well in real time, guide the timely and effective implementation of drainage and gas production measures for the gas well, and ensure the normal production of the gas well.
以上内容仅为说明本实用新型的技术思想，不能以此限定本实用新型的保护范围，凡是按照本实用新型提出的技术思想，在技术方案基础上所做的任何改动，均落入本实用新型权利要求书的保护范围之内。The above content is only to illustrate the technical idea of the utility model, and cannot limit the protection scope of the utility model. Any changes made on the basis of the technical solution according to the technical idea proposed by the utility model all fall into the scope of the utility model. within the scope of protection of the claims.
Claims (7)
- A kind of 1. orifice plate vortex street gas-liquid metering device, it is characterised in that including be sequentially connected cyclone gas-liquid blender (1), hole Plate throttling arrangement (2) and vortex-shedding meter (6), the cyclone gas-liquid blender (1) are used to uniformly mix biphase gas and liquid flow Nebulize stream, and the throttle orifice plate apparatus (2) is used to produce the biphase gas and liquid flow differential pressure, and the vortex-shedding meter (6) is used In measurement fluid-mixing operating mode volume flow, the cyclone gas-liquid blender (1), throttle orifice plate apparatus (2) and flux of vortex street Meter (6) is respectively connecting to for air-liquid flow rate calculation, output and the gas-liquid of display Flow Meter Based (7).
- A kind of 2. orifice plate vortex street gas-liquid metering device according to claim 1, it is characterised in that the cyclone gas-liquid mixing Pressure transmitter (3) is provided between device (1) and throttle orifice plate apparatus (2), differential pressure is provided with the throttle orifice plate apparatus (2) Transmitter (4), temperature transmitter (5), the pressure are provided between the throttle orifice plate apparatus (2) and vortex-shedding meter (6) Power transmitter (3), differential pressure transmitter (4), temperature transmitter (5) and vortex-shedding meter (6) respectively by signal wire (8) with it is described Gas-liquid Flow Meter Based (7) connects.
- A kind of 3. orifice plate vortex street gas-liquid metering device according to claim 2, it is characterised in that the gas-liquid flow rate calculation Instrument (7) is arranged in the differential pressure transmitter (4).
- A kind of 4. orifice plate vortex street gas-liquid metering device according to claim 1, it is characterised in that the cyclone gas-liquid mixing Device (1), throttle orifice plate apparatus (2) and vortex-shedding meter (6) are connected using flange.
- A kind of 5. orifice plate vortex street gas-liquid metering device according to claim 4, it is characterised in that the cyclone gas-liquid mixing Device (1), vortex-shedding meter (6) and throttle orifice plate apparatus (2) are connected using flange.
- A kind of 6. orifice plate vortex street gas-liquid metering device according to claim 1, it is characterised in that the cyclone gas-liquid mixing The inlet end of device (1) is connected by block valve with gas well mouth.
- A kind of 7. orifice plate vortex street gas-liquid metering device according to claim 1, it is characterised in that the vortex-shedding meter (6) it is connected by gate valve with flow line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720765168.0U CN206959918U (en) | 2017-06-28 | 2017-06-28 | An orifice plate vortex street gas-liquid metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720765168.0U CN206959918U (en) | 2017-06-28 | 2017-06-28 | An orifice plate vortex street gas-liquid metering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206959918U true CN206959918U (en) | 2018-02-02 |
Family
ID=61386247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720765168.0U Active CN206959918U (en) | 2017-06-28 | 2017-06-28 | An orifice plate vortex street gas-liquid metering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206959918U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290008A (en) * | 2017-06-28 | 2017-10-24 | 中国石油天然气股份有限公司 | An orifice plate vortex street gas-liquid metering device and its calculation method |
| CN108756822A (en) * | 2018-05-29 | 2018-11-06 | 潘嘉 | A kind of shale gas well factory's gas producing device and technological process |
| CN115047918A (en) * | 2022-06-01 | 2022-09-13 | 山东非金属材料研究所 | Micro-flow gas mass flow controller and control method |
-
2017
- 2017-06-28 CN CN201720765168.0U patent/CN206959918U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290008A (en) * | 2017-06-28 | 2017-10-24 | 中国石油天然气股份有限公司 | An orifice plate vortex street gas-liquid metering device and its calculation method |
| CN108756822A (en) * | 2018-05-29 | 2018-11-06 | 潘嘉 | A kind of shale gas well factory's gas producing device and technological process |
| CN115047918A (en) * | 2022-06-01 | 2022-09-13 | 山东非金属材料研究所 | Micro-flow gas mass flow controller and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107290008A (en) | An orifice plate vortex street gas-liquid metering device and its calculation method | |
| CN204255415U (en) | A conical orifice type gas-liquid two-phase flowmeter | |
| CN107843297B (en) | On-line measurement device and method for liquid phase flow rate of gas-liquid two-phase flow with low gas fraction based on V-cone | |
| CN102435245B (en) | A steam flow metering device and metering method | |
| CN100538307C (en) | A kind of wind tunnel calibration method for large flow gas pipeline averaging velocity tube flowmeter | |
| CN114444343A (en) | Virtual height numerical simulation method for wet natural gas venturi tube flowmeter | |
| CN101382445A (en) | Double differential pressure throttling humidity measuring device | |
| CN206959918U (en) | An orifice plate vortex street gas-liquid metering device | |
| CN110608775A (en) | Device and method for measuring wet gas flow by combination of orifice plate and thermal flowmeter | |
| CN111307227A (en) | Crescent pore plate gas-liquid two-phase flow measuring device | |
| CN106643945A (en) | Homogenous gas-liquid mixing medium mass flow rate testing device and method | |
| CN205858315U (en) | A gas-liquid two-phase metering device at the wellhead of a gas well | |
| CN202483554U (en) | Oil well produced-fluid optical fiber measuring system | |
| CN102012331A (en) | Gas and pressure measuring method with anti-clogging function for gas measurement | |
| CN101624907A (en) | Underground oil-water-gas mixed phase flow measuring device | |
| CN208953029U (en) | Vortex throttling integrated gas-liquid two-phase flowmeter | |
| CN205861140U (en) | A gas-liquid two-phase mass flowmeter | |
| CN204007745U (en) | Pitot bar integrated mass flow meter | |
| CN108254034A (en) | A kind of Novel oil gas moisture phase flow rate on-line metering device and its metering method | |
| CN201225146Y (en) | Downhole oil, water, gas mixing phase flow measuring device | |
| CN103791960B (en) | A kind of method of reduction furnace flow accurate measurement | |
| CN207407969U (en) | A kind of Liqiud-gas mixing device for being used to measure precession spiral flowmeter precision | |
| CN218994489U (en) | A combined standard meter method flow standard device | |
| CN116265865B (en) | Vortex throttling moisture flow meter and moisture flow measurement method | |
| CN202066531U (en) | Gas-liquid two-phase mixed transport meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |