CN201795817U - Wet steam flow meter of pore plate of uniform-speed pipe - Google Patents
Wet steam flow meter of pore plate of uniform-speed pipe Download PDFInfo
- Publication number
- CN201795817U CN201795817U CN2010201788921U CN201020178892U CN201795817U CN 201795817 U CN201795817 U CN 201795817U CN 2010201788921 U CN2010201788921 U CN 2010201788921U CN 201020178892 U CN201020178892 U CN 201020178892U CN 201795817 U CN201795817 U CN 201795817U
- Authority
- CN
- China
- Prior art keywords
- wet steam
- flow
- uniform
- flow meter
- pore plate
- 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
A wet steam flow meter of a pore plate of a uniform-speed pipe comprises a pore plate flow meter, a pressure gauge, a uniform-speed pipe flow meter, a static pressure outlet pipe and a dryness and flow processor. The uniform-speed pipe flow meter and the pore plate flow meter are connected in series on a wet steam pipeline and respectively positioned on two sides of the dryness and flow processor. The pressure gauge is mounted on a pipeline between the uniform-speed pipe flow meter and the wet steam pipeline by the aid of the static pressure outlet pipe. A steam thermal physical property database and a uniform-speed pipe and pore plate flow mould are arranged inside the dryness and flow processor. Flow rate of dry saturated steam inside the wet steam pipeline is measured by the uniform-pipe flow meter, and the dryness and flow processor acquires fluid dynamic and static pressure difference signals of the uniform-speed pipe flow meter, fluid pressure signals of the pressure gauge and fluid pressure difference signals of the pore plate flow meter and obtains dryness and mass flow rate of steam in the wet steam pipeline by the aid of the internal steam thermal physical property database and the uniform-speed pipe and pore plate flow mould. The wet steam flow meter has the advantage of high wet steam flow measurement precision.
Description
Technical field
What the present invention relates to is two phase flow of damp steam rerum natura technical field of measuring, is a kind of wet steam flow instrument of even speed tube orifice plate.
Background technology
Wet steam is gas and mixtures of liquids, is biphase gas and liquid flow, and steam quality is the important quality parameter of steam, and the gas phase dry saturated steam quality of wet steam and the ratio of wet steam quality are called steam quality.In industrial processs such as oil exploitation, chemical industry, food processing, pharmacy, be extensive use of wet steam.For the steam utilization process being implemented the otherwise effective technique monitoring, need to measure steam quality and flow.
Publication number is to disclose a kind of association type wet steam flow, dryness measurement device and measuring method thereof in the application documents of CN101038188, the core technology of this patent is: two flowmeters that are installed in series on the wet steam pipeline are standard orifice plate flowmeter and differential pressure type flowmeter, pressure gauge of auxiliary again installation, discharge model by these two flowmeters, according to law of conservation of mass, solve steam quality and flow in the jet chimney.At present, because the discharge model error of differential pressure type flowmeter is bigger, thereby the maximum error of measuring that causes this measurement mechanism measuring accuracy can not satisfy the engineering application requirements greater than 5%.
Summary of the invention
For overcome the measuring accuracy error that exists in the prior art greater than, can not satisfy the defective of engineering application requirements, the present invention proposes a kind of wet steam flow instrument of even speed tube orifice plate.
The present invention includes orifice flowmeter, pressure gauge, even speed tube velocimeter, static pressure fairlead and mass dryness fraction flow processor.Even speed tube velocimeter and orifice flowmeter are connected on the wet steam pipeline, lay respectively at the both sides of mass dryness fraction flow processor.Pressure gauge is installed on the pipeline between even speed tube velocimeter and the wet steam pipeline by the static pressure fairlead.Mass dryness fraction flow processor is built-in with steam heat physical data storehouse, and the even speed tube orifice plate discharge model of being made up of void fraction equation, steam quality equation, vapour density equation, orifice flowmeter flow equation.
Described mass dryness fraction flow processor is placed in the instrument box, and the support bar of table case is welded on the outside wall surface of wet steam pipeline.
The present invention determines steam quality and flow by the void fraction of asking for the wet steam pipeline.Measure the flow velocity of the dry saturated steam in the wet steam pipeline by the even speed tube velocimeter, gather the fluid pressure difference signal of the fluid dynamic and static pressure difference signal of even speed tube velocimeter, manometric fluid pressure signal, orifice flowmeter by mass dryness fraction flow processor, and by built-in steam heat physical data storehouse and even speed tube orifice plate discharge model, draw the steam quality and the mass rate of wet steam pipeline, have the wet steam flow of measurement advantage of high precision.
Description of drawings
Fig. 1 is the structural representation of the wet steam flow instrument of even speed tube orifice plate, wherein:
1. wet steam pipeline 2. even speed tube velocimeters 3. static pressure fairleads 4. pressure gauges
5. mass dryness fraction flow processor 6. orifice flowmeters
Embodiment
Present embodiment is the wet steam flow instrument of even speed tube orifice plate, is used for the wet steam flow and the mass dryness fraction of measuring channel.
Present embodiment comprises wet steam pipeline 1, even speed tube velocimeter 2, static pressure fairlead 3, pressure gauge 4, mass dryness fraction flow processor 5 and orifice flowmeter 6.Mass dryness fraction flow processor is built-in with steam heat physical data storehouse, and the even speed tube orifice plate discharge model of being made up of void fraction equation, steam quality equation, vapour density equation, orifice flowmeter flow equation.Wet steam pipeline 1 is the weldless steel tube made from No. 20 boiler steels, the long 1000mm of its caliber 76 wall thickness 12mm.
Even speed tube velocimeter 2 is used to measure the flow velocity of the dry saturated steam in the wet steam pipeline 1, and is connected on the wet steam pipeline 1 with orifice flowmeter 6, lays respectively at the both sides of mass dryness fraction flow processor 5, between the two at a distance of 700mm; Since flow path direction be the front portion of wet steam flow instrument, then mean velocity tube flowmeter 2 is in the front portion of wet steam flow instrument, velocimeter 5 is at the rear portion of wet steam flow instrument.Pressure gauge 4 is installed on the pipeline between even speed tube velocimeter 2 and the wet steam pipeline 1 by static pressure fairlead 3.Mass dryness fraction flow processor 5 is placed in the instrument box, and the support bar of table case is welded on the outside wall surface of wet steam pipeline 1.
Present embodiment is gathered the fluid pressure difference signal on the differential pressure transmitter of fluid pressure signal, orifice flowmeter 6 of fluid dynamic and static pressure difference signal on the differential pressure transmitter of even speed tube velocimeters 2, pressure gauge 4 by mass dryness fraction flow processor 5, and, draw the steam quality and the mass rate of wet steam pipeline 1 by built-in steam heat physical data storehouse and even speed tube orifice plate discharge model.
Claims (2)
1. the wet steam flow instrument of an even speed tube orifice plate, comprise orifice flowmeter (6) and pressure gauge (4), it is characterized in that the wet steam flow instrument of described even speed tube orifice plate also comprises even speed tube velocimeter (2), static pressure fairlead (3) and mass dryness fraction flow processor (5); Even speed tube velocimeter (2) is connected on the wet steam pipeline (1) with orifice flowmeter (6), lays respectively at the both sides of mass dryness fraction flow processor (5); Pressure gauge (4) is installed on the pipeline between even speed tube velocimeter (2) and the wet steam pipeline (1) by static pressure fairlead (3).
2. a kind of according to claim 1 wet steam flow instrument of even speed tube orifice plate is characterized in that, mass dryness fraction flow processor (5) is placed in the instrument box, and the support bar of table case is welded on the outside wall surface of wet steam pipeline (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201788921U CN201795817U (en) | 2010-04-30 | 2010-04-30 | Wet steam flow meter of pore plate of uniform-speed pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201788921U CN201795817U (en) | 2010-04-30 | 2010-04-30 | Wet steam flow meter of pore plate of uniform-speed pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201795817U true CN201795817U (en) | 2011-04-13 |
Family
ID=43850723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201788921U Expired - Fee Related CN201795817U (en) | 2010-04-30 | 2010-04-30 | Wet steam flow meter of pore plate of uniform-speed pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201795817U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188624A (en) * | 2021-04-21 | 2021-07-30 | 河北大学 | Wet steam measuring device and method based on vortex shedding flowmeter and uniform velocity tube flowmeter |
-
2010
- 2010-04-30 CN CN2010201788921U patent/CN201795817U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188624A (en) * | 2021-04-21 | 2021-07-30 | 河北大学 | Wet steam measuring device and method based on vortex shedding flowmeter and uniform velocity tube flowmeter |
| CN113188624B (en) * | 2021-04-21 | 2023-10-03 | 河北大学 | Wet steam measuring device and method based on vortex shedding flowmeter and uniform velocity tube flowmeter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101839738B (en) | Wet steam flow instrument and measuring method | |
| Venugopal et al. | Review on vortex flowmeter—Designer perspective | |
| CN201653466U (en) | Wet steam flow instrument | |
| CA2654952A1 (en) | Sonar circumferential flow conditioner | |
| US20110022335A1 (en) | Real-time non-stationary flowmeter | |
| CN100425954C (en) | A differential pressure type flow measuring method and flow apparatus thereof | |
| JP2014528587A (en) | Pulsating flow meter | |
| US9194730B2 (en) | Method and apparatus for determining the phase compositions of a multiphase fluid flow | |
| CN104101394A (en) | Coriolis mass flow sensor | |
| CN203287060U (en) | Dual-track ultrasonic flow measurement system | |
| CN102252722B (en) | Three-differential-pressure gas liquid two-phase fluid flow metering device | |
| CN203479342U (en) | Gas flowmeter | |
| CN101726336A (en) | Ultrasonic flow meter | |
| US9188471B2 (en) | Two-phase flow sensor using cross-flow-induced vibrations | |
| CN204514402U (en) | A kind of differential pressure mass flowmeter for vortex street | |
| CN201795817U (en) | Wet steam flow meter of pore plate of uniform-speed pipe | |
| CN203132616U (en) | Combined type ultrasonic multichannel flow transmitter | |
| CN117629299A (en) | Multi-flow parameter measurement method for oil-water two-phase flow | |
| CN202614634U (en) | Absorption tower slurry density measuring device | |
| CN103353319A (en) | Moisture flow measuring method based on straight through type gas ultrasonic flowmeter | |
| CN101672676A (en) | Flow measurement device and method of gas-liquid multi-phase flow | |
| CN204007742U (en) | Coriolis mass flow sensor | |
| CN101349581A (en) | Insert type flow measuring device based on MEMS sensor | |
| CN203657863U (en) | Coriolis mass flow meter applicable to high flow | |
| CN102364308A (en) | Method and device for measuring mass flow of jet flow |
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: 20110413 Termination date: 20140430 |