CN100342219C - Two-stroke gas-liquid biphase flowmeter - Google Patents
Two-stroke gas-liquid biphase flowmeter Download PDFInfo
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- CN100342219C CN100342219C CNB200610050617XA CN200610050617A CN100342219C CN 100342219 C CN100342219 C CN 100342219C CN B200610050617X A CNB200610050617X A CN B200610050617XA CN 200610050617 A CN200610050617 A CN 200610050617A CN 100342219 C CN100342219 C CN 100342219C
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Abstract
The present invention discloses a two-stroke gas and liquid two-phase flowmeter. A lower communicating pipe is inserted in a two-phase flow pipeline, and is provided with a plurality of small holes on one section of the two-phase flow pipeline. The upper end of one section outside the two-phase flow pipeline is connected with an upper communicating pipe through a control valve, and is connected with a rodless cavity of a cylinder. A piston rod of the cylinder is electrically connected with a drive and control processing unit through a step motor. One end of a pressure sensor and a temperature sensor is respectively connected with the rodless cavity of the cylinder. A pressure differential sensor is arranged on the two-phase flow pipeline. Two pressure fetching openings of the pressure differential sensor are respectively connected with the upstream side and the downstream side of the lower communicating pipe. The pressure sensor, the temperature sensor, the pressure differential sensor and the control valve are respectively electrically connected with the drive and control processing unit. The liquid is sucked into the cylinder or is exhausted out of the cylinder under the driving of the piston. According to the change of the temperature and the pressure of a suction stroke and a compression and the exhaust stroke, the mixed-phase density of the two-phase flow is obtained. After the mixed-phase density and pressure differential signals of the two-phase flow pipeline carry out the data processing, the total flow amount and the phase division flow amount are obtained. The present invention has integral structure, and obtains one two-phase flow measuring instrument.
Description
Technical field
The present invention relates to flow testing device, specifically relate to a kind of two-stroke gas-liquid biphase flowmeter.
Background technology
Two-stroke gas-liquid biphase flowmeter is the brand-new multiphase flow rates instrument of a kind of structure.Because heterogeneous flowing reaches the complicacy and the randomness of tool influence factor, the detection technique of polyphasic flow is a problem that solves far away but be of universal significance.The flow pattern of biphase gas and liquid flow distributes in the pipe just bubble flow, slug flow, slug flow, wave flow, laminar flow, annular flow even core flow etc., they are relevant with factors such as speed of incoming flow, void fraction and piping arrangement and field conditions, and the variation between the flow pattern has randomness and uncertainty; Oil, gas, water even oil, gas, water, sand (solid particle) polyphasic flow to oil gas field runs into change more complicated.
The method that adopts generally has the measuring method of traditional single-phase flow instrument and the combination of polyphasic flow test model at present; Or adopt the method (as the combination of combination, gamma-ray density meter and the flowmeter of two different types of traffic meters etc.) of multisensor combination; Or use the new technology in modern age, as ray technology, laser technology, correlation technique, process tomographic imaging technology etc.These measuring methods are a measurement mechanism often, and are bulky, complex structure, and the cost height, measuring accuracy is subjected to very big restriction.
Summary of the invention
The object of the present invention is to provide a kind of two-stroke gas-liquid biphase flowmeter.
The technical solution adopted for the present invention to solve the technical problems is: insert lower communicating tube in Two-phase Flow Pipeline Transport, lower communicating tube a section in Two-phase Flow Pipeline Transport has a lot of apertures, an end of termination operation valve on lower communicating tube a section outside Two-phase Flow Pipeline Transport, the other end of operation valve connects the end of communicating pipe, the rodless cavity of another termination cylinder of last communicating pipe, the piston rod of cylinder is electrically connected with the drive controlling processing unit through stepper motor, one end of pressure transducer and temperature sensor connects the rodless cavity of cylinder respectively, differential pressure pick-up is housed on the Two-phase Flow Pipeline Transport, and two pressure tappings of differential pressure pick-up are connected to lower communicating tube upstream and downstream both sides on the Two-phase Flow Pipeline Transport by two pressure pipes; Pressure transducer, temperature sensor, differential pressure pick-up and operation valve are electrically connected with the drive controlling processing unit respectively.
Above-mentioned drive controlling processing unit comprises amplifier, the chip microprocessor with built-in A/D converter and built-in EEPROM, stepper motor driver, electromagnetic valve driver, display driver, button and display is set.One end of amplifier is connected with differential pressure pick-up, pressure transducer and temperature sensor respectively, the built-in A/D converter of the other end of amplifier and chip microprocessor is connected, stepper motor driver is connected with stepper motor with the I/O mouth of microprocessor respectively, and electromagnetic valve driver is connected with operation valve with another I/O mouth of microprocessor respectively; Microprocessor connects display by display driver.
Two-stroke gas-liquid biphase flowmeter structurally adopts a cylinder piston arrangement, and with communicating pipe cylinder and Two-phase Flow Pipeline Transport being communicated with, and fluid can be sucked under piston actuated or discharges cylinder, setting pressure sensor and temperature sensor on cylinder.Temperature, pressure according to intake stroke and compression discharge stroke changes the mixture density that can obtain two-phase flow, obtains total flow and separate phase flow rate with the Two-phase Flow Pipeline Transport differential pressure signal after data processing.
The beneficial effect that the present invention has is:
1. two-stroke gas-liquid biphase flowmeter has simple in structurely, and the input expense is low, and volume is little; Still do not have so succinct structure in the two-phase flow measuring instrument, economic benefit is very obvious.
2. instrument has integral structure, can really accomplish a two-phase flow measurement instrument, rather than a huge measurement mechanism; And the influence of flow pattern is less relatively.
Description of drawings
Fig. 1 is a two-stroke gas-liquid biphase flowmeter one-piece construction synoptic diagram;
Fig. 2 is the lower communicating tube structural drawing;
Fig. 3 is the structured flowchart of drive controlling processing unit.
Among the figure: 1, Two-phase Flow Pipeline Transport, 2, lower communicating tube, 3, operation valve, 4, differential pressure pick-up, 5, last communicating pipe, 6, pressure transducer, 7, temperature sensor, 8, piston, 9, cylinder, 10, piston rod, 11, fixed support, 12, stepper motor, 13, the drive controlling processing unit.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Two-stroke gas-liquid biphase flowmeter one-piece construction such as Fig. 1, shown in Figure 2, in Two-phase Flow Pipeline Transport 1, insert lower communicating tube 2, lower communicating tube 2 a section in Two-phase Flow Pipeline Transport 1 has a lot of apertures, an end of termination operation valve 3 on lower communicating tube 2 a section outside Two-phase Flow Pipeline Transport 1, the other end of operation valve 3 connects the end of communicating pipe 5, the rodless cavity of another termination cylinder 9 of last communicating pipe 5, the piston rod 10 of cylinder 9 is electrically connected with drive controlling processing unit 13 through stepper motor 12, one end of pressure transducer 6 and temperature sensor 7 connects the rodless cavity of cylinder 9 respectively, differential pressure pick-up 4 is housed on the Two-phase Flow Pipeline Transport 1, and two pressure tappings of differential pressure pick-up are connected to lower communicating tube upstream and downstream both sides on the Two-phase Flow Pipeline Transport by two pressure pipes; Pressure transducer 6, temperature sensor 7, differential pressure pick-up 4 and operation valve 3 are electrically connected with drive controlling processing unit 13 respectively.
Described drive controlling processing unit 13 comprises amplifier, the chip microprocessor with built-in A/D converter and built-in EEPROM, stepper motor driver, electromagnetic valve driver, display driver, button and display is set as shown in Figure 3; One end of amplifier is connected with differential pressure pick-up 4, pressure transducer 6 and temperature sensor 7 respectively, the built-in A/D converter of the other end of amplifier and chip microprocessor is connected, stepper motor driver is connected with stepper motor 12 with the I/O mouth of microprocessor respectively, and electromagnetic valve driver is connected with operation valve 3 with another I/O mouth of microprocessor respectively; Microprocessor connects display by display driver.
The course of work of flowmeter is as follows: two-phase fluid is during through the lower communicating tube 2 in the Two-phase Flow Pipeline Transport 1, upstream and downstream at lower communicating tube 2 produces differential pressure Δ P, this differential pressure Δ P is measured by differential pressure pick-up 4, and sends the result to drive controlling processing unit 13, calculates total flow Q; Simultaneously, open operation valve 3 under the control of drive controlling processing unit 13, stepper motor 12 promotes piston 8 and carries out intake stroke, and the aperture that two-phase fluid is passed through lower communicating tube 2 from Two-phase Flow Pipeline Transport 1 sucks cylinder 9.Measure temperature T 1 and pressure P 1 in the cylinder when finishing intake stroke, and with T1 and P1 send the microprocessor preservation to as a result; Closed control valve 3 then, stepper motor 12 promotes piston 8 and carries out pressure stroke under the control of drive controlling processing unit 13, temperature and pressure in the cylinder raises, when the throw of poston (as 1/2 stroke) of upper pressure limit value that is compressed to a regulation or regulation, measure temperature T 2 and pressure P 2 in the cylinder, and with T2 and P2 send the microprocessor preservation to as a result; And open operation valve 3 and carry out discharge stroke, fluid is discharged in the Two-phase Flow Pipeline Transport 1, finish a two-stroke cycle.And then begin next two-stroke cycle again and again.
Temperature sensor, the electric signal of pressure transducer and differential pressure pick-up outputting standard is connected with the treatment conversion circuit of drive controlling processing unit 13, this drive controlling processing unit is by the chip microprocessor control with built-in A/D converter, as MSP430 series chip microprocessor, the temperature, pressure and the differential pressure value that collect are carried out computing.Stepper motor driver is connected with the chip microprocessor electric signal with electromagnetic valve driver, and stepper motor driver and electromagnetic valve driver, chip microprocessor can be distinguished the forward and reverse action of control step motor and the opening and closing action of operation valve.Button is set to the single chip microcomputer disposal system necessary parameter (as the upper pressure limit of tested two-phase flow liquid and gas density of medium, pressure stroke or throw of poston upper limit etc.) is set, by measuring the signal of each sensor, and total flow that after data processing, obtains and separate phase flow rate, can on display, show measurement result.
Pulse output, D/A output can be two-phase flow meter with the RS485 interface provides multiple general standard interface with other subscriber equipment (as host computer or intelligence instrument) when being connected.
The everything of two-phase flow meter and measurement are all carried out under the control of drive controlling processing unit 13.The value of temperature, pressure and differential pressure pick-up is amplified by amplifier and the A/D converter conversion, sends the result to microprocessor and preserves and handle.Differential pressure signal has comprised the information of two-phase flow total flow; The gas phase content that temperature T 1 and T2, pressure P 1 and P2 and the cylinder volume V1 that is obtained by throw of poston (step value by stepper motor is tried to achieve) and V2 can calculate a two-stroke cycle.Thereby calculate gas phase flow and liquid phase stream value according to total flow.
The temperature sensor that the present invention adopts can be used STYB series of integral temperature sensor or STYI series of integral temperature sensor etc.; Pressure transducer can be used MSP series pressure transducer or CYB series pressure transducer etc.; Differential pressure pick-up can be used KELLER PD-23 series differential pressure pick-up etc.; Stepper motor driver can be used MS series stepper motor driver or SH series stepper motor driver etc.
Above-mentioned embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (2)
1. two-stroke gas-liquid biphase flowmeter, it is characterized in that: in Two-phase Flow Pipeline Transport (1), insert lower communicating tube (2), lower communicating tube (2) a section in Two-phase Flow Pipeline Transport (1) has a lot of apertures, the one section end of going up termination operation valve (3) of lower communicating tube (2) outside Two-phase Flow Pipeline Transport (1), the other end of operation valve (3) connects communicating pipe one end of (5), the rodless cavity of another termination cylinder (9) of last communicating pipe (5), the piston rod (10) of cylinder (9) is electrically connected with drive controlling processing unit (13) through stepper motor (12), one end of pressure transducer (6) and temperature sensor (7) connects the rodless cavity of cylinder (9) respectively, differential pressure pick-up (4) is housed on the Two-phase Flow Pipeline Transport (1), and two pressure tappings of differential pressure pick-up are connected to lower communicating tube upstream and downstream both sides on the Two-phase Flow Pipeline Transport by two pressure pipes; Pressure transducer (6), temperature sensor (7), differential pressure pick-up (4) and operation valve (3) are electrically connected with drive controlling processing unit (13) respectively.
2. a kind of two-stroke gas-liquid biphase flowmeter according to claim 1 is characterized in that described drive controlling processing unit (13) comprises amplifier, the chip microprocessor with built-in A/D converter and built-in EEPROM, stepper motor driver, electromagnetic valve driver, display driver, button and display are set; One end of amplifier is connected with differential pressure pick-up (4), pressure transducer (6) and temperature sensor (7) respectively, the built-in A/D converter of the other end of amplifier and chip microprocessor is connected, stepper motor driver is connected with stepper motor (12) with the I/O mouth of microprocessor respectively, and electromagnetic valve driver is connected with operation valve (3) with another I/O mouth of microprocessor respectively; Microprocessor connects display by display driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610050617XA CN100342219C (en) | 2006-05-08 | 2006-05-08 | Two-stroke gas-liquid biphase flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610050617XA CN100342219C (en) | 2006-05-08 | 2006-05-08 | Two-stroke gas-liquid biphase flowmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1844858A CN1844858A (en) | 2006-10-11 |
| CN100342219C true CN100342219C (en) | 2007-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610050617XA Expired - Fee Related CN100342219C (en) | 2006-05-08 | 2006-05-08 | Two-stroke gas-liquid biphase flowmeter |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393642B (en) * | 2011-10-21 | 2013-04-10 | 东北大学 | Control device and control method for gas-liquid dual-phase current pipe |
| CN103867185B (en) * | 2014-04-09 | 2017-01-11 | 习小铁 | Gas and liquid two-phase-element flow meter special for pumping unit |
| CN110987097B (en) * | 2019-12-10 | 2020-11-13 | 北京科技大学 | Method for measuring gas-liquid multiphase flow by using pressure fluctuation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5542410A (en) * | 1991-03-05 | 1996-08-06 | Aradigm Corporation | Delivery of aeerosol medications for inspiration |
| CN1425901A (en) * | 2003-01-15 | 2003-06-25 | 中国计量学院 | Integrated intelligent cavity flow meter |
| CN1434273A (en) * | 2003-03-09 | 2003-08-06 | 中国计量学院 | Multi-ring spiral shape circular tube multiphase flow meter |
-
2006
- 2006-05-08 CN CNB200610050617XA patent/CN100342219C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5542410A (en) * | 1991-03-05 | 1996-08-06 | Aradigm Corporation | Delivery of aeerosol medications for inspiration |
| CN1425901A (en) * | 2003-01-15 | 2003-06-25 | 中国计量学院 | Integrated intelligent cavity flow meter |
| CN1434273A (en) * | 2003-03-09 | 2003-08-06 | 中国计量学院 | Multi-ring spiral shape circular tube multiphase flow meter |
Non-Patent Citations (4)
| Title |
|---|
| 一体化智能空腔流量计的电路设计 毛谦敏，李文军，郑建光，周宁宁，梁国伟，中国计量学院学报，第14卷第4期 2003 * |
| 一种基于空腔振动的新型智能流量计 梁国伟，李文军，郑建光，毛谦敏，周宁宁，自动化仪表，第25卷第5期 2004 * |
| 均速管流量计用于两相流流量测量的研究 付丰，赵在三，曹伟武，郁鸿凌，上海机械学院学报，第14卷第1期 1992 * |
| 孔板流量计的原理与应用 梁国伟，盛健，计量技术，第3期 1994 * |
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