CN101464169A - Soap film flowmeter - Google Patents
Soap film flowmeter Download PDFInfo
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- CN101464169A CN101464169A CNA2007103012867A CN200710301286A CN101464169A CN 101464169 A CN101464169 A CN 101464169A CN A2007103012867 A CNA2007103012867 A CN A2007103012867A CN 200710301286 A CN200710301286 A CN 200710301286A CN 101464169 A CN101464169 A CN 101464169A
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Abstract
The invention relates to a soap film flowmeter used for measuring gas-flow rate, which comprises a gas outlet, a soap film liquid recycling device, a soap film tube, a soap film production device, a soap film cup, a soap liquid feed inlet, a rubber ball interface, a rubber ball, soap liquid, a gas inlet, a waste soap film liquid outlet and a valve; the soap film liquid recycling device used for collecting waste soap film liquid is positioned above the soap film tube; the soap film production device is positioned under the soap film tube; the gas to be tested flows in through the gas outlet and the soap film cup and flows out through the soap film tube and the gas outlet; the soap film production device produces a soap film through squeezing the rubber ball or by other means; under the action of the pressure of the incoming gas, the soap film is pushed to rise at a uniform speed along the soap film tube; the time for the soap film to pass from one scale position to another on the soap film tube is measured by means of stopwatch measure or photoelectrical detection and the like; the flow rate can be determined through the calculation involving the measure time and the capacity between the two scales on the soap film tube; the soap film comes into the soap film liquid recycling device after rising to the upper end of the soap film tube; and the waste soap film liquid can be removed after the valve is opened.
Description
Technical field
The present invention relates to the soap film flowmeter that a kind of gas flow measurement is used.
Background technology
In the measurement verification regulations JJG586-2006 of the People's Republic of China (PRC) " soap film flowmeter " that implemented on March 6th, 2007, the principle of work and the structural shape of soap film flowmeter there is detailed description.Now in the technology, the structural shape of soap film flowmeter is a soap-film pipe that has scale, an air intake opening is arranged below the soap-film pipe, the soap-film pipe connect a glueballs bottom, soap-film liquid is housed in the glueballs, its principle of work is: measured gas enters the soap-film pipe through the air intake opening of soap-film pipe lower end, extruding glueballs (or using other method) produces soap-film, because the pressure effect of air inlet, promoting soap-film at the uniform velocity rises along the soap-film pipe, when soap-film is raised to the following groove of soap-film pipe, timer picks up counting, when soap-film was raised to the last groove of soap-film pipe, timer stopped timing, can calculate the instantaneous delivery that flows through soap film flowmeter by the volume between time that records and soap-film pipe two grooves.The electronics soap film flowmeter then is in the soap-film uphill process, the lower limit of the pair of sensors of installing on the process outer wall and last prescribing a time limit, and Displaying Meter directly demonstrates instantaneous delivery.It is effective being used to measure small gas flow according to the soap film flowmeter of above two kinds of principle of work design, but, in real work, have following shortcoming: (1) is for the uncovered soap film flowmeter in upper end, soap-film is when rising to soap-film pipe top, the soap-film soap-film pipe of can blowing out influences surrounding environment, has limited the usable range and the occasion of soap film flowmeter.(2) when the gas flow that is used to measure greater than 6L/min, when particularly measuring flow greater than the gas flow more than the 20L/min, when with hand extruding glueballs, the soap lye liquid level is lifted to air intake opening, because the gas flow rate (flow) that air intake opening flows to is bigger, can be with the liquid level of soap lye and soap lye internal disturbance in a mess, can't guarantee to take place a good soap-film, therefore to want to take place a good soap-film be very difficult or almost be impossible.(3) when calibrating the sampling flow of air sampler, need above soap film flowmeter, increase a gas outlet, join with pipeline and air sampler, because the discharge area of soap film flowmeter dwindles suddenly, gas flowfield changes, flow velocity is accelerated, cause soap-film to break, soap-film after breaking becomes the potpourri (hereinafter to be referred as soap-film liquid) of soap lye or soap lye and broken soap-film, soap-film liquid flows down along the soap-film tube wall, or be bonded on the soap-film tube wall motionlessly, directly hinder the measurement of next soap-film, and influence accuracy and the measuring accuracy measured.
Summary of the invention
The objective of the invention is to provide a kind of soap film flowmeter: the production method of (1) soap-film is different from traditional soap film flowmeter, to solve when measuring big flow with soap film flowmeter, the difficult problem of bad production soap-film, the measurement usable range of expansion soap film flowmeter.(2) retracting device of a useless soap-film liquid of increase above soap film flowmeter, proposed the effective collection way of useless soap-film liquid from method, avoided useless soap-film liquid to flow down and influence and measure and useless soap-film liquid is bonded at the generation of motionless phenomenon on the soap-film tube wall along the soap-film tube wall.
The object of the present invention is achieved like this: soap film flowmeter of the present invention comprises: the gas outlet, soap-film liquid retracting device, the soap-film pipe, the soap-film process units, the soap lye cup, with the soap lye mouth, the glueballs interface, glueballs, soap lye, air intake opening, valve, the outlet of soap-film liquid, it is characterized in that in the socket of the top of soap-film pipe a soap-film liquid retracting device bigger than soap-film pipe diameter, below the soap-film pipe, connected a soap-film process units littler than soap lye cup diameter, stretch in the soap lye cup, an air intake opening is arranged on the top tube wall of soap lye cup, the bottom has one with the soap lye mouth, the glueballs interface is connected on the soap lye cup, glueballs is socketed on the glueballs interface, the effect of glueballs is to raise the liquid level of soap lye at the soap lye cup by extruding glueballs (or using other method), so glueballs can be used glueballs in implementation process, the device that pipettor maybe can be raised liquid level replaces.Structurally, the lower surface that should be higher than the soap-film process units with the level height of soap lye mouth upper end, effect with the soap lye mouth is to add the passage of soap lye and regulate the soap lye liquid level, when the syringe that soap lye is housed with sebific duct when being connected with the soap lye mouth, soap lye can be added in the soap lye cup, also can regulate soap lye liquid level in the soap lye cup, in soap-film liquid outlet of bottom design of soap-film liquid retracting device, by valve and extraneous sealing by the method for push-and-pull syringe.When needs will give up soap-film liquid when shifting out, after valve was opened, the soap-film liquid that can will give up shifted out.When extruding glueballs (or using other method), the liquid level of soap lye is elevated, rise to the bottom of soap-film process units, after unclamping, produced a soap-film on the soap-film process units, because the admission pressure effect promotes soap-film and enters at the uniform velocity rising in the soap-film pipe along the soap-film process units, when soap-film rose under the soap-film pipe groove, timer picked up counting; When soap-film rose on the soap-film pipe groove, timer stopped timing, can calculate the flow that flows through soap film flowmeter by time that records and volume.When soap-film rose to soap-film pipe top, soap-film entered in the soap-film liquid retracting device under the admission pressure effect, and gas is then discharged by the outlet of soap-film pipe.When needs shift out soap-film liquid, soap-film liquid can be shifted out after valve opened.
In implementation process, because shape of cross section is circular soap-film pipe, the soap-film process units, the soap lye cup is that square or non-circular processing technology and method are simple than shape of cross section, therefore generally with soap-film, the soap-film process units, the soap lye cup is designed to shape of cross section for circular, but can be generation in circle or non-circle close-shaped at xsect owing to produce the method for a soap-film, and moving also of soap-film can be carried out in the closed tubular conduit of cross section for circle or non-circle, therefore, the shape of cross section of soap-film pipe and soap-film process units and soap lye cup can be circular, square, polygon or other non-circular shape.
When product design, soap film flowmeter according to the inventive method design, generally soap-film liquid retracting device is designed to shape of cross section for circular, bigger than soap-film pipe upper part diameter, and be enclosed within the top of soap-film pipe, in design soap-film pipe lower end is connected the soap-film process units generally speaking, the diameter of soap-film pipe is bigger than soap-film process units in the general design, but also need sometimes according to circumstances the soap-film pipe to be designed to diameter less than the soap-film process units, the perhaps diameter that soap-film pipe and soap-film process units are designed to equate, when the diameter of soap-film pipe and soap-film process units is identical, soap-film pipe and soap-film process units have just become one, at this moment the function of soap-film process units has been transferred on the lower end of soap-film pipe, and this also is that the present invention is different from one of obvious distinguishing characteristics of traditional soap film flowmeter.
The present invention has following advantage: (1) when extruding during glueballs 8, and the soap lye liquid level rises and enters the bottom of soap-film process units 4, after unclamping, has just produced a soap-film in the bottom of soap-film process units 4, and it is simple and reliable for structure.When (2) breaking after soap-film rises to soap-film pipe 3 tops, useless soap-film liquid enters in the soap-film liquid retracting device 2 under the inertial force effect automatically, has avoided useless soap-film liquid to flow down or hang on the soap-film tube wall and the difficult problem that influence is measured along tube wall.Measured gas enters in the soap lye cup 5 by air intake opening 10, through soap-film process units 4, soap-film pipe 3, flow out gas outlet 1, when extruding glueballs 8 (or using other method), the liquid level of soap lye 9 rises to the bottom of soap-film process units 4, after unclamping, on the soap-film process units, produced a soap-film, entering gas promotion soap-film from air intake opening 10 is gone upward in the soap-film pipe 3 by soap-film process units 4, soap-film is along uniform ascending in the soap-film pipe 3 under admission pressure, measure (or with methods such as Photoelectric Detection) soap-film by A on the soap-film pipe 3 with stopwatch, time between B two grooves (position), can calculate the instantaneous delivery that flows through soap film flowmeter by the volume between time that records and soap-film pipe two grooves.
The concrete structure of invention is provided by following example and accompanying drawing.
Description of drawings
Fig. 1 is the structural representation of soap film flowmeter of the present invention
1--gas outlet, 2--soap-film liquid retracting device, 3--soap-film pipe, 4--soap-film process units, 5--soap lye cup, 6--are with soap lye mouth, 7--glueballs interface, 8--glueballs, 9--soap lye, 10--air intake opening, 11--valve, the outlet of 12--soap-film liquid, the following groove of A-soap-film pipe, the last groove of B-soap-film pipe
Specific implementation method
As shown in Figure 1, in the present embodiment, soap film flowmeter comprises a gas outlet 1, soap-film liquid retracting device 2, soap-film pipe 3, soap-film process units 4, soap lye cup 5, with soap lye mouth 6, glueballs interface 7, glueballs 8, soap lye 9, air intake opening 10, valve 11, soap-film liquid outlet 12, it is characterized in that soap-film liquid retracting device 2 is socketed in the top of soap-film pipe 3, soap-film process units 4 stretches in the soap lye cup 5, gas enters in the soap lye cup 5 by air intake opening 10, through soap-film process units 4, soap-film pipe 3, flow out gas outlet 1, when extruding glueballs 8 (or using other method), the liquid level of soap lye 9 rises to the bottom of soap-film process units 4, after unclamping, on production soap-film device 4, produced a soap-film, the gas promotion soap-film that enters from air intake opening 10 goes upward in the soap-film pipe 3, measure (or with methods such as Photoelectric Detection) soap-film by A on the soap-film pipe 3 with stopwatch, time between B two grooves (position), volume by between time that records and soap-film pipe two grooves can calculate the instantaneous delivery that flows through soap film flowmeter.When after soap-film rises to soap-film pipe 3 tops, breaking, because the inertia effect of admission pressure, broken soap-film liquid enters in the soap-film liquid retracting device 2, when needs will give up soap-film liquid when shifting out, open valve 11, useless soap-film liquid flows out behind outlet 12 of soap-film liquid and valve 11.
Claims (7)
1. soap film flowmeter, comprise gas outlet 1, soap-film liquid retracting device 2, soap-film pipe 3, soap-film process units 4, soap lye cup 5, with soap lye mouth 6, glueballs interface 7, glueballs 8, soap lye 9, air intake opening 10, valve 11, useless soap-film liquid outlet 12, it is characterized in that in the socket of the top of soap-film pipe 3 a soap-film liquid retracting device 2, below soap-film pipe 3, connected a soap-film process units 4, soap-film process units 4 stretches in the soap lye cup 5, glueballs interface 7 is connected on the soap lye cup 5, glueballs 8 is socketed on the glueballs interface 7, and glueballs 8 can be used glueballs in the specific implementation, the device that pipettor maybe can be raised liquid level replaces.
2. soap film flowmeter according to claim 1 is characterized in that soap-film pipe 3 and soap-film process units 4 connect together, and the diameter of soap-film pipe 3 is greater than the diameter of soap-film process units 4, and soap-film process units 4 stretches in soap lye cup 5.
3. soap film flowmeter according to claim 1, it is characterized in that soap-film pipe 3 and soap-film process units 4 connect together, soap-film process units 4 stretches in soap lye cup 5, when the equal diameters of the diameter of soap-film pipe 3 and soap-film process units 4, soap-film process units 4 just becomes same pipe with soap-film pipe 3, and this also is one of obvious distinguishing characteristics of the present invention and traditional soap film flowmeter.
4. soap film flowmeter according to claim 1 is characterized in that the lower end of soap-film pipe 3 has connected a soap-film process units 4, and the diameter of soap-film process units 4 is greater than the diameter of soap-film pipe 3, and soap-film process units 4 stretches in soap lye cup 5.
5. soap film flowmeter according to claim 1, soap-film pipe 3 connects together with soap-film process units 4, soap-film process units 4 stretches in soap lye cup 5, and soap-film pipe 3 can be circular, square, polygon with the shape of the cross section of inboard wall of soap-film process units 4 and soap lye cup 5, or other non-circular shape.
6. soap film flowmeter according to claim 1 is characterized in that in the socket of the top of soap-film pipe 3 the soap-film liquid retracting device 2 that a diameter is bigger than soap-film pipe 3.
7. soap film flowmeter according to claim 1 is characterized in that a soap-film liquid retracting device 2 is arranged on the top of soap-film pipe 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103012867A CN101464169A (en) | 2007-12-19 | 2007-12-19 | Soap film flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103012867A CN101464169A (en) | 2007-12-19 | 2007-12-19 | Soap film flowmeter |
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| Publication Number | Publication Date |
|---|---|
| CN101464169A true CN101464169A (en) | 2009-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007103012867A Pending CN101464169A (en) | 2007-12-19 | 2007-12-19 | Soap film flowmeter |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147272A (en) * | 2009-11-25 | 2011-08-10 | 青岛恒远科技发展有限公司 | Soap film flowmeter |
| CN102620783A (en) * | 2012-04-23 | 2012-08-01 | 上海奇阳信息科技有限公司 | Image recognition-based electronic soap film gas flow meter |
| CN102997966A (en) * | 2012-12-13 | 2013-03-27 | 大连欧科膜技术工程有限公司 | Gas flow test characterization liquid |
| CN103837308A (en) * | 2014-03-25 | 2014-06-04 | 中国烟草总公司郑州烟草研究院 | Testing device and testing method for leakage of paper air permeability detector |
| CN103925957A (en) * | 2014-04-02 | 2014-07-16 | 新疆维吾尔自治区计量测试研究院 | Soap film flow meter with automatic film opening function |
| CN107490408A (en) * | 2017-07-20 | 2017-12-19 | 江苏中聚检测服务有限公司 | A kind of electronics soap film flowmeter and its control system with real-time tracking capability |
-
2007
- 2007-12-19 CN CNA2007103012867A patent/CN101464169A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147272A (en) * | 2009-11-25 | 2011-08-10 | 青岛恒远科技发展有限公司 | Soap film flowmeter |
| CN102620783A (en) * | 2012-04-23 | 2012-08-01 | 上海奇阳信息科技有限公司 | Image recognition-based electronic soap film gas flow meter |
| CN102997966A (en) * | 2012-12-13 | 2013-03-27 | 大连欧科膜技术工程有限公司 | Gas flow test characterization liquid |
| CN103837308A (en) * | 2014-03-25 | 2014-06-04 | 中国烟草总公司郑州烟草研究院 | Testing device and testing method for leakage of paper air permeability detector |
| CN103837308B (en) * | 2014-03-25 | 2016-03-16 | 中国烟草总公司郑州烟草研究院 | A kind of method of testing of paper permeability detector being carried out to leak-testing |
| CN103925957A (en) * | 2014-04-02 | 2014-07-16 | 新疆维吾尔自治区计量测试研究院 | Soap film flow meter with automatic film opening function |
| CN103925957B (en) * | 2014-04-02 | 2017-08-08 | 新疆维吾尔自治区计量测试研究院 | One kind opens membrane type soap film flowmeter automatically |
| CN107490408A (en) * | 2017-07-20 | 2017-12-19 | 江苏中聚检测服务有限公司 | A kind of electronics soap film flowmeter and its control system with real-time tracking capability |
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Open date: 20090624 |