CN202305563U - Calibration device of sensor measuring speed of gas-liquid two-phase flow and gas content - Google Patents
Calibration device of sensor measuring speed of gas-liquid two-phase flow and gas content Download PDFInfo
- Publication number
- CN202305563U CN202305563U CN2011202637478U CN201120263747U CN202305563U CN 202305563 U CN202305563 U CN 202305563U CN 2011202637478 U CN2011202637478 U CN 2011202637478U CN 201120263747 U CN201120263747 U CN 201120263747U CN 202305563 U CN202305563 U CN 202305563U
- Authority
- CN
- China
- Prior art keywords
- gas
- liquid
- sensor
- air
- speed
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The utility model provides a calibration device of sensor measuring a speed of a gas-liquid two-phase flow and a gas content at the same time by utilizing a pressure sensor and a conductive electrode. The calibration device of sensor measuring the speed of the gas-liquid two-phase flow and the gas content includes components of a liquid supply system, a gas supply system, a support controlled by a stepping motor and having two rotary degrees of freedom, a gas-liquid mixer, a sprayer, a calibration cabin, a connection pipeline, a data collecting and managing system, a control computer and the like. When in calibration, the support controlled by the stepping motor rotates a measuring probe gradually in two freedom degree directions according to a calibration range of a rotary angle. Pressure values of a plurality of pressure holes of the probe are recorded in all fixed angles. The gas content is adjusted in a predetermined range. Output voltages of electrode pairs in various combinations of all conductive electrodes on the measuring probe in different gas contents are recorded. All data is obtained through a data collecting plate and is controller by the computer.
Description
Technical field
The present invention relates to the caliberating device of sensor of speed and the gas content of measurement of gas liquid two-phase; This sensor is to be used for three-dimensional flow speed and the gas content of measurement of gas liquid two-phase; Before using, need it is demarcated, thereby the caliberating device that needs a cover to be fit to.
Background technology
The mobile of biphase gas and liquid flow is modal complicated phenomenon on the engineering, and for example flowing in the flowing of the peritrochanteric in the water wheels machinery, the burner atomizer all is that the two-phase flow of gas-liquid flows.Design, the plant equipment of analyzing Two-phase flow need be understood in the flow field such as speed, pressure, and data such as gas-liquid two-phase content.Developed at present the multiple experimental technique that flows to two-phase flow.For example, particle imaging technology (PIV), LDV technology (LDV), hotting mask measuring technique, optical fiber measurement technology etc.Wherein the technology with pressure transducer and conductive electrode while Two-phase flow rate measurement and gas content is a kind of effective, easy technology.Its ultimate principle is that porous pressure probe and conductive electrode are made into as a whole sensor, is called as the speed of biphase gas and liquid flow and the sensor of gas content.Utilize the three-dimensional flow speed and the direction of porous pressure probe Measurement of Two-phase, the gas content of measuring with conductive electrode simultaneously.The speed of biphase gas and liquid flow and the sensor of gas content are before being used for measurement; Need demarcate it; Need to obtain the pressure coefficient of a plurality of pressure ports and the relation database table of flow direction, and the output voltage values of the electrode pair of various combinations and the relation curve between the gas content.The demarcation of the pressure probe in this sensor is different from the demarcation of pressure probe in wind-tunnel or water hole of single-phase flow (like gas), exists when caliberating device must be considered in the fluid gas-liquid two-phase, also will consider the variation of gas-liquid phase content.
Summary of the invention
The purpose of this invention is to provide a kind ofly to the caliberating device with the sensor of the speed of the biphase gas and liquid flow of pressure transducer and conductive electrode while Two-phase flow rate measurement and gas content and gas content, it comprises a liquid-supplying system, an air supply system, an air and liquid mixer, a nozzle, a demarcation cabin, a support that two rotational freedoms are arranged and parts such as connecting line, data acquisition management system and control computer by step motor control.
The liquid of two-phase flow is provided by liquid-supplying system, and gas is provided by gas supply system; Liquid, gas get into air and liquid mixer and form the homogeneous biphase gas and liquid flow; Two-phase flow flows out from the nozzle of air and liquid mixer; In nozzle is to demarcate the cabin, is the support that two rotational freedoms are arranged by step motor control therein.
The technical scheme that the present invention adopts:
Fig. 1 is the layout of caliberating device.Fig. 1 representes: through the liquid head of level altitude, is connected to liquid pump, throttling valve in liquid-supplying system, liquid is delivered to air and liquid mixer by pipeline, and with the flowing velocity of liquid pump and throttle valve control liquid.Through gas pump, connect in the air supply system,, deliver the gas to air and liquid mixer through air throttle, gas meter, temperature sensor by pipeline, and with the content of air throttle and gas meter pilot-gas.The fluid flow and the gas flow that get into air and liquid mixer can pass through throttling valve, air throttle control respectively, thereby have controlled the content of the gas in the two-phase flow.The content of gas can be from 0 (neat liquid) to 100% (pure gas) in theory.
The cavity of an air and liquid mixer is cylindrical, and at least three layers of wire netting that stainless steel is processed are installed along axis direction in the inside, and purpose is that the porous nickel that lets liquids and gases pass through wire netting is mixed; During work, air and liquid mixer is placed along axis normal.Air and liquid mixer makes gas and liquid fully be mixed into homogeneous fluid, flows out through following nozzle.Nozzle and aligns with measuring sonde that desire is demarcated vertically downward.Nozzle and measuring sonde distance each other can not be near excessively, in order to avoid produce the reflex of liquid, changes the static pressure at the nozzle place of fluid, and this distance can not be too far away, in order to avoid the liquid that flows out mixes new air, influences stated accuracy.
As shown in fig. 1, the speed of the cylindrical biphase gas and liquid flow of profile and the sensor of gas content (being also referred to as measuring sonde) are positioned on the support with two rotational freedoms.When settling measuring sonde, the measuring junction of probe vertically upward and nozzle align.Two rotational freedoms of support be meant around measuring sonde axial rotational angle α ° and around with rotational angle β ° of the axis of measuring sonde axis normal.The rotation of support is by step motor control, and support is equipped with the part of measuring sonde in demarcating the cabin, and stepper motor is demarcating out of my cabin, in case invading of solution stopping body soaked.Stepper motor is regulated the rotation of measuring sonde through crowngear and worm and gear.Fig. 2 is the structural representation that the support of two rotary freedoms is arranged.
When demarcating, the support of step motor control on two degree of freedom directions, progressively rotates measuring sonde according to anglec of rotation calibration range.Under each fixed angle, the force value of a plurality of pressure ports of data acquisition management system and control computer record measuring sonde.At preset range adjustment gas content, all conductive electrodes under the record gas with various content on the measuring sonde are according to the output voltage of the electrode pair of multiple combination then.
Advantage of the present invention:
Caliberating device of the present invention can be demarcated the sensor with porous pressure and multielectrode, measurement of gas liquid two-phase three-dimensional velocity and gas content.This caliberating device is easy to use, simple in structure, low cost of manufacture.
Description of drawings
The layout schematic diagram of Fig. 1 caliberating device;
Among the figure, 1 liquid-supplying system, 2 air and liquid mixers, 3 air supply systems, 4 data acquisition management systems, 5 control computer, 6 demarcation cabins, 7 step motor control, 8 have the support of two rotational freedoms, sensor measurement probe, 10 nozzles that 9 desires are demarcated.
Fig. 2 has the structural representation of the support of two rotary freedoms;
Among the figure, the sensor measurement probe, 5 that 1 stepper motor, 2 stepper motors, 3 supports, 4, desire are demarcated, around measuring sonde axial rotational angle α °, 6 worm gears, 7 worm screws, 8 around with rotational angle β ° of the axis of measuring sonde axis normal.
The outside drawing of the measuring sonde that desire is demarcated in Fig. 3 embodiment;
Among the figure, 1 measuring sonde, 2 electrode holes, 3 conductive electrodes, 4 pitot apertures, 5 baroports
The layout of the caliberating device in Fig. 4 embodiment;
Among the figure, measuring sonde, 19 automatically controlled primary throttle valves, 20 automatically controlled liquid pumps, 21 water collecting basins that 1 water tank, 2 run-down pipes, 3 by-pass throttle valves, 4 liquid rotor flows, 5 current, 6 air and liquid mixers, 7 airflows, 8 gas pressure sensors, 9 temperature sensors, 10 automatically controlled air throttles, 11 will be demarcated through rotor flow, 12 pneumatic pumps, 13 nozzles, 14 data acquisition management systems, 15 control computer, 16 two-freedom supports, 17 demarcation cabins, 18.
The structural representation of Fig. 5 air and liquid mixer;
Among the figure, 1 circular cylindrical cavity, 2 air intake openings, 3 water inlets, 4 air intake openings, 5 three layers of wire netting, outlet of 6 two-phase flows that stainless steel is processed
Embodiment
Further specify the structure and the principle of caliberating device of sensor of speed and the gas content of a kind of biphase gas and liquid flow that the present invention proposes with a specific embodiments.The composition of the biphase gas and liquid flow that this scheme relates to is the sky G&W; The profile of the sensor of measuring speed and air content (being also referred to as measuring sonde) is cylindrical; Measuring sonde has four pressure ports (center pit is a pitot aperture, and three is baroport, 120 ° at interval), three electrode holes on every side; Also be 120 ° at interval, be interspersed with pressure port.The aperture is 0.8mm.Three platinum electrode diameter 0.4mm are installed in the electrode hole.The measuring sonde diameter is 5mm, and the outside drawing of its measuring junction is as shown in Figure 3.
Fig. 4 is the layout of the caliberating device of the sensor in this embodiment.As shown in Figure 4, the cylindrical measuring sonde of profile is positioned on the support with two rotational freedoms.When settling measuring sonde, the measuring junction of probe vertically upward.Two rotational freedoms be meant around measuring sonde axial rotational angle α ° and around with rotational angle β ° of the axis of measuring sonde axis normal.The rotation of support is by step motor control, and support is equipped with the part of measuring sonde in demarcating the cabin, and stepper motor is demarcating out of my cabin, in case invading of solution stopping body soaked.Stepper motor is regulated the rotation of measuring sonde through crowngear and worm and gear.There is the structural representation of support of two rotary freedoms identical with Fig. 2.
In Fig. 4, the head of a level altitude is one, and level altitude is arranged is the water tank of 6m, has the water source constantly to add water tank.The height of head is controlled by run-down pipe simultaneously.Following water pipe is received ground water collecting basin.Water in the water collecting basin is delivered to air and liquid mixer through automatically controlled liquid pump, by-pass throttle valve, automatically controlled primary throttle valve, liquid spinner-type flowmeter.The fluid flow that gets into air and liquid mixer can be through automatically controlled throttle valve control.Another side, pneumatic pump with pressurized air through automatically controlled air throttle, be delivered to air and liquid mixer through spinner-type flowmeter.Gas flow is controlled by automatically controlled air throttle, thus the content of pilot-gas.Gas pressure sensor is used to monitor the pressure of carrying gas, and the value that temperature sensor obtains is used for the density value of correcting gas.
The air and liquid mixer structural representation is seen Fig. 5.Show among the figure that it has a circular cylindrical cavity, above it with upper side a water inlet and air intake opening are respectively arranged, insert water and air respectively, below the center outlet is arranged, diameter is 20mm.In the air and liquid mixer the inside at least three layers of wire netting that stainless steel is processed are installed, purpose is that the porous nickel that lets water and air see through wire netting is mixed.During work, air and liquid mixer is placed along axis normal, must not tilt, the cast nozzle that to connect an internal diameter be 20mm.Can guarantee that like this two of nozzle exit is that one dimension flows mutually.Nozzle location is above measuring sonde that desire is demarcated.The fluid-flow rate at nozzle place can be confirmed through the height of head, the flow of water.
The air-water two-phase flow that flows out from nozzle is considered to homogeneous, and the fluid that nozzle flows out also is considered to uniform along the velocity distribution of nozzle diameter direction.Nozzle vertically downward, and be installed in the measuring sonde that will demarcate on the two-freedom support and align.Nozzle and measuring sonde distance each other can not be near excessively, in order to avoid produce the reflex of liquid, changes the static pressure at the nozzle place of two-phase flow.Simultaneously, this distance can not be too far away, in order to avoid the two-phase flow that flows out mixes new air, influences stated accuracy.This distance can be decided to be 22mm.The fluid that flows out from nozzle flows back to water collecting basin from the pipeline of demarcating the cabin inner bottom part.
Four pressure ports on the measuring sonde are connected to four pressure transducers through flexible pipe, and three platinum electrodes add the alternating current of 1Hz.Pressure transducer all is connected with data acquisition board with three electrodes.
When demarcating, the support of step motor control progressively rotates measuring sonde according to the anglec of rotation calibration range of setting (20 ° to+20 °) on both direction.Calibration range is crossed conference and is made attached to the generation of the fluid on the measuring junction of measuring sonde separation, makes and demarcates failure.Under each fixed angle, the collection plate collection is by the force value of four pressure ports of computer recording measuring sonde.According to predetermined air ratio, can regulate automatically controlled air throttle from 0 (neat liquid) to 100% (pure gas) in theory then, adjustment gas content, the output voltage values of three electrodes of any two combination results in following three electrodes of record gas with various content.Data acquisition board SF 10Hz, 20 seconds sampling times.
Through the processing of data acquisition management system to data; The final calibration result that obtains is expressed as: the pressure coefficient of four pressure ports and flow direction (with around measuring sonde axial rotational angle α ° and around with the rotational angle β ° expression of the axis of measuring sonde axis normal) relation database table, and concern matched curve by three between the output voltage values of any two three electrode pairs that are combined as the electrode pair generation in three electrodes and the gas content (from 5% to 80%) respectively.
Claims (7)
1. the caliberating device of the sensor of the speed of a biphase gas and liquid flow and gas content, the liquid of two-phase flow by liquid-supplying system provide, gas provides by gas supply system; Liquid, gas get into air and liquid mixer and form the homogeneous biphase gas and liquid flow; Two-phase flow flows out from the nozzle of air and liquid mixer; Being one in nozzle and demarcating the cabin, is a support that two rotational freedoms are arranged by step motor control therein.
2. the caliberating device of the sensor of the speed of biphase gas and liquid flow according to claim 1 and gas content; It is characterized in that; Described liquid-supplying system is through the liquid head of level altitude; Be connected to liquid pump, throttling valve by pipeline, liquid is delivered to the described air and liquid mixer of claim 1, and with the flowing velocity of liquid pump and throttle valve control liquid.
3. the caliberating device of the sensor of the speed of biphase gas and liquid flow according to claim 1 and gas content; It is characterized in that; A described air supply system is connected by pipeline through gas pump, through air throttle, gas meter, temperature sensor; Deliver the gas to the described air and liquid mixer of claim 1, and with the content of air throttle and gas meter pilot-gas.
4. the caliberating device of the sensor of the speed of biphase gas and liquid flow according to claim 1 and gas content; It is characterized in that, a described rotational freedom with support of two rotational freedoms be meant around measuring sonde axial rotation angle and around with the rotational angle of the axis of measuring sonde axis normal.
5. the caliberating device of the sensor of the speed of biphase gas and liquid flow according to claim 4 and gas content; It is characterized in that; The rotation of described support with two rotational freedoms is by step motor control; Support is equipped with the part of measuring sonde in demarcating the cabin, and stepper motor is being demarcated out of my cabin.
6. the caliberating device of the sensor of the speed of biphase gas and liquid flow according to claim 1 and gas content is characterized in that, the cavity of a described air and liquid mixer is cylindrical, and at least three layers of wire netting that stainless steel is processed are installed along axis direction in the inside; During work, air and liquid mixer is placed along axis normal.
7. the caliberating device of the sensor of the speed of biphase gas and liquid flow according to claim 1 and gas content; It is characterized in that; Described nozzle connects the described air and liquid mixer of claim 6 vertically downward above, below align with the measuring sonde that will demarcate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202637478U CN202305563U (en) | 2011-07-25 | 2011-07-25 | Calibration device of sensor measuring speed of gas-liquid two-phase flow and gas content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202637478U CN202305563U (en) | 2011-07-25 | 2011-07-25 | Calibration device of sensor measuring speed of gas-liquid two-phase flow and gas content |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202305563U true CN202305563U (en) | 2012-07-04 |
Family
ID=46374435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202637478U Expired - Fee Related CN202305563U (en) | 2011-07-25 | 2011-07-25 | Calibration device of sensor measuring speed of gas-liquid two-phase flow and gas content |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202305563U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454383A (en) * | 2013-09-05 | 2013-12-18 | 长三角(嘉兴)纳米科技产业发展研究院 | Dynamic response performance test system for gas sensor |
| WO2014029069A1 (en) * | 2012-08-21 | 2014-02-27 | Lu Ming | Calibration apparatus of gas-liquid two-phase flow speed and gas content sensor |
| WO2014079055A1 (en) * | 2012-11-26 | 2014-05-30 | Lu Ming | Five-degree-of-freedom support system for use in flow field measurement |
| CN107255501A (en) * | 2017-06-06 | 2017-10-17 | 重庆川仪自动化股份有限公司 | Gas-liquid mixed streaming vortex-shedding meter demarcates detection means system and control method |
| CN107498124A (en) * | 2017-08-21 | 2017-12-22 | 广东工业大学 | A kind of device of Electrolyzed Processing plane complications group's groove |
| CN109738672A (en) * | 2019-04-02 | 2019-05-10 | 潍柴动力股份有限公司 | A blade anemometer calibration device |
| CN110487972A (en) * | 2019-09-10 | 2019-11-22 | 宁波科赛迪电子科技有限公司 | A kind of multi-faceted full-automatic testing device of smoke alarm based on rotary encoder |
| CN115166010A (en) * | 2022-06-29 | 2022-10-11 | 天津大学 | Flow self-adaptive intelligent gas calibration control method |
-
2011
- 2011-07-25 CN CN2011202637478U patent/CN202305563U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014029069A1 (en) * | 2012-08-21 | 2014-02-27 | Lu Ming | Calibration apparatus of gas-liquid two-phase flow speed and gas content sensor |
| WO2014079055A1 (en) * | 2012-11-26 | 2014-05-30 | Lu Ming | Five-degree-of-freedom support system for use in flow field measurement |
| CN103454383A (en) * | 2013-09-05 | 2013-12-18 | 长三角(嘉兴)纳米科技产业发展研究院 | Dynamic response performance test system for gas sensor |
| CN107255501A (en) * | 2017-06-06 | 2017-10-17 | 重庆川仪自动化股份有限公司 | Gas-liquid mixed streaming vortex-shedding meter demarcates detection means system and control method |
| CN107498124A (en) * | 2017-08-21 | 2017-12-22 | 广东工业大学 | A kind of device of Electrolyzed Processing plane complications group's groove |
| CN109738672A (en) * | 2019-04-02 | 2019-05-10 | 潍柴动力股份有限公司 | A blade anemometer calibration device |
| CN109738672B (en) * | 2019-04-02 | 2019-06-25 | 潍柴动力股份有限公司 | A kind of paddle wheel anemometer caliberating device |
| CN110487972A (en) * | 2019-09-10 | 2019-11-22 | 宁波科赛迪电子科技有限公司 | A kind of multi-faceted full-automatic testing device of smoke alarm based on rotary encoder |
| CN115166010A (en) * | 2022-06-29 | 2022-10-11 | 天津大学 | Flow self-adaptive intelligent gas calibration control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202305563U (en) | Calibration device of sensor measuring speed of gas-liquid two-phase flow and gas content | |
| RU2428662C2 (en) | Multi-phase flow metre | |
| CN111841938B (en) | Low-cost spray pressure and flow integrated intelligent detection device and method | |
| CN105067049A (en) | Differential pressure type flow measuring device based on rotational flow principle and method | |
| CN103674469B (en) | The experimental technique of mine fan coupling pipe network operation characteristic and device thereof | |
| CN102435233B (en) | Vertical spiral wing type water metering device | |
| CN112304396B (en) | Micro flow calibration system | |
| CN207025181U (en) | A kind of dosing metering pump system | |
| CN211504278U (en) | Multistage rectification MEMS gas flowmeter | |
| CN220473115U (en) | Individual sampler | |
| CN209196393U (en) | A kind of anti-whirlpool fairing of pump intake | |
| WO2014029069A1 (en) | Calibration apparatus of gas-liquid two-phase flow speed and gas content sensor | |
| CN206387466U (en) | A set of Aircraft is turned into industry decoction monitoring device | |
| CN213180153U (en) | Liquid turbine flowmeter current limiting structure | |
| CN205619980U (en) | Mass flowmeter | |
| CN100560048C (en) | A dripper assembly for a dripping pill machine | |
| US8091867B2 (en) | Apparatus for producing microbubble liquid and device for atomizing air bubbles using the same | |
| CN204027615U (en) | Flowmeter shell and flowmeter | |
| CN204313893U (en) | Fiber tube wind speed flowmeter | |
| CN103576703A (en) | Water volume measurement and adjustment integrated device | |
| CN202393431U (en) | Distributive porous plate flowmeter | |
| CN209630348U (en) | A precision regulator for transfusion | |
| CN202304900U (en) | Vertical helix type water metering device | |
| CN105840878A (en) | Flow dynamic distribution device | |
| CN106522304B (en) | Gravity flow pressure regulating difference water supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20130725 |