CN201945333U - Ultrasonic vortex flowmeter - Google Patents
Ultrasonic vortex flowmeter Download PDFInfo
- Publication number
- CN201945333U CN201945333U CN2011200070735U CN201120007073U CN201945333U CN 201945333 U CN201945333 U CN 201945333U CN 2011200070735 U CN2011200070735 U CN 2011200070735U CN 201120007073 U CN201120007073 U CN 201120007073U CN 201945333 U CN201945333 U CN 201945333U
- Authority
- CN
- China
- Prior art keywords
- vortex
- vortex street
- flow meter
- generation passage
- shedding 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The utility model discloses an ultrasonic vortex flowmeter which can measure an ultra low velocity gas flow with high precision and high sensitivity. The ultrasonic vortex flowmeter includes a header, a connecting rod and a vortex detection part. The header is connected with the vortex detection part through the connection rod. The cable inside the connection rod connects the internal circuit within the header and the ultrasonic sensor in the vortex detection part. The vortex detection part includes the vortex occurrence channel and the vortex generator inside the vortex occurrence channel. The vortex generator is a triangular cylinder and both ends of the cylinder are fixed on two opposite side walls of the vortex occurrence channel. The cross section of the triangular cylinder is paralleled to the direction of the measured air flow pipe. The upper side of the connecting rod includes the flange of the tested pipe and dual locking screw structure. The utility model ultrasonic vortex flowmeter has an excellent high sensitivity ultra low flow measurement capability, and has a strong anti-interference ability and accuracy.
Description
Technical field
The utility model relates to a kind of industrial fluids flow measurement device, relates in particular to the high precision of the ultralow flow rate of gas flow of a kind of energy measurement, highly sensitive ultrasound wave vortex shedding flow meter.
Background technology
For the industrial gasses flow measurement, especially for example flow measurement of hydrogen, acetylene or the like of some explosive, inflammable high energy gas, because safety factor limits these gases and often can not improve flow velocity by supercharging, therefore need accurately to measure the measurement mechanism of the gas flow under the very slow operating mode of this flow velocity.The generation of ultrasonic vortex shedding flow meter flow signal utilizes ultrasound wave to detect the frequency that vortex takes place in fluid based on the principle of Karman vortex street.Ultrasonic vortex shedding flow meter is a kind of of velocity flowmeter, is mainly used in the measurement of ultralow gas flow rate aspect.
Chinese patent ZL02242807.0 discloses the whole plug-in type vortex shedding flow meter of a kind of vortex street sounding body, its structure is to connect the vortex street detection bodies in the supporting linkage lower end, the connecting link upper end passes support from the pipeline that is provided with ball valve and seal assembly and connects the gauge outfit body, wears lead in the supporting linkage and connects gauge outfit body and detection bodies.Its shortcoming is a no affixed point between connecting link lower end and tested pipeline, and therefore, under the percussive action of fluid, connecting link lower end vortex street detection bodies tends to do slight swing.And directly with connecting link lower end and tested pipeline affixed after, cause trouble can for again the maintenance that continues to flow.
Chinese patent ZL20082007128.8 discloses the ultrasonic vortex shedding flow meter of the strong new plug-in of a kind of antijamming capability, to improve measuring accuracy.Its structure is to connect the vortex street detection bodies in the supporting linkage lower end, and the supporting linkage upper end is passed pedestal and connect the indicator gauge body, connects the indicator gauge body on the lead of cross-under in the supporting linkage, connects the vortex street detection bodies down.The vortex street detection bodies is made up of stream tube entire body, vortex shedder and ultrasonic transmitter and ultrasonic receiver, vortex shedder is the trapezoidal column structure, radially be welded in the channel flow entire body, ultrasonic transmitter and ultrasonic receiver are installed in the flow body sidewall that the body downstream takes place.The pipe under test center that during use the whole insertion of vortex street detection bodies is complementary.When fluid flows through, the downstream that body takes place in circulation duct produces eddy current, be positioned at ultrasonic transmitter that the fluid sidewall installs, signal that ultrasonic receiver is gathered only limit to take place body ultrasonic whirlpool signal, thereby got rid of that direct current fluid exerts an influence to the whirlpool signal and the measuring error brought, and then improved the accuracy of detection of flowmeter.
Its shortcoming is that sampling is limited in the small range because the vortex street detection bodies is positioned at the center of tested pipeline.Though improved accuracy of detection, reduced the sensitivity that detects, under the low flow velocity operating mode of gas, almost can't detect.Because the molecule of general gas is all very little, the gap is relatively large between the molecule, and the eddy current that produces during by this vortex street detection bodies under low flow velocity, ultralow flow condition is less, though have the gas stream mistake this moment, sonac can't be experienced.
Summary of the invention
The technical problems to be solved in the utility model provides and had a kind ofly not only satisfied high precision, but also has the ultrasound wave vortex shedding flow meter of higher sensitivity.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of ultrasound wave vortex shedding flow meter, comprise gauge outfit, connecting link and vortex street test section, this gauge outfit is connected by this connecting link this vortex street test section with its below, is connected with cable in this connecting link and connects the internal circuit of this gauge outfit and the ultrasonic sensor in this vortex street test section.This vortex street test section also comprises vortex street generation passage and is located at the interior vortex street generator of this vortex street generation passage.This vortex street generator is that triangulo column and cylinder two ends are fixed on two opposing sidewalls of this vortex street generation passage, and the transverse cross-section parallel of this triangulo column is in the airflow direction of tested pipeline.This connecting link top is provided with flange and the tight screw structural of twin-lock that is used for connecting this tested pipeline.
For above-mentioned vortex shedding flow meter, this vortex street test section also is included in the gas extractor that this vortex street generation passage front end fuses with it.
For above-mentioned vortex shedding flow meter, this gas extractor is the bucket shape passage.
For above-mentioned vortex shedding flow meter, this gas extractor inlet and this vortex street generation channel cross-section are rectangle, circle or oval, and this gas extractor inlet area is greater than the area of this vortex street generation channel cross-section.
For above-mentioned vortex shedding flow meter, the xsect of this vortex street generator is an isosceles oxygon.
For above-mentioned vortex shedding flow meter, the plane that the summit of this isosceles oxygon is parallel to the inlet place of this vortex street generation passage towards the inlet and the base of this vortex street generation passage.
For above-mentioned vortex shedding flow meter, the center of gravity of the xsect of this vortex street generator equates to the distance of two opposing sidewalls of this vortex street generation passage.
For above-mentioned vortex shedding flow meter, between the center of gravity of this vortex street generator is to the distance on the plane at the inlet place of this vortex street generation passage 1 times to 10 times to the distance on the plane at the outlet place of this vortex street generation passage.
For above-mentioned vortex shedding flow meter, this ultrasonic sensor is installed on two opposing sidewalls of this vortex street generation passage in two symmetrical holes and periphery is coated with airtight cable box.
Advantage and characteristics that technical solutions of the utility model are main are:
(1) ultrasound examination vortex frequency: unique Ultrasonic Detection body, detection signal is collected in the fluid state in tested pipeline centre, and the tube wall vibration is minimum to its influence;
(2) the outstanding ultralow fluid-velocity survey ability of high sensitivity, and have very strong antijamming capability and measuring accuracy.
Description of drawings
Fig. 1 is the whole sectional view of a described ultrasound wave vortex shedding flow meter of embodiment of the utility model;
Fig. 2 is that view is in the past seen along gas flow in the vortex street test section of ultrasound wave vortex shedding flow meter shown in Figure 1;
Fig. 3 is that the vortex street test section of ultrasound wave vortex shedding flow meter shown in Figure 1 is from seeing view in the past perpendicular to the direction of gas flow.
Embodiment
Below, describe the described ultrasound wave vortex shedding flow meter of embodiment of the utility model with reference to the accompanying drawings.
As shown in Figure 1, ultrasound wave vortex shedding flow meter described in the utility model comprises gauge outfit 1, connecting link 6 and vortex street test section.Gauge outfit 1 is connected by the vortex street test section of connecting link 6 with its below, is connected with cable in the connecting link 6 and connects the internal circuit of gauge outfit 1 and the ultrasonic sensor 8 in the vortex street test section.
Connecting link 6 tops are provided with flange 5 and the tight screw structural of twin-lock.Ultrasound wave vortex shedding flow meter of the present utility model is connected with tested pipeline by flange 5, and can regulate the insertion position of vortex street test section in tested pipeline by the screw 3 and 4 on the loosening locking connecting link 6, make vortex street generation passage 11 and vortex street generator 12 can be positioned at the center of detected gas circulation duct and can satisfy the online needs that continue to flow and detect.The tight screw structural of twin-lock has guaranteed the leakproofness of instrument, better security.
Between tight screw structural of twin-lock and gauge outfit 1, be provided with gas flow indicating device 2, be carved with arrow points above, the flow direction of expression gas.
As shown in Figures 2 and 3, the vortex street test section comprises connecting link lower end colligator 7, ultrasonic sensor 8, airtight cable box 9, gas extractor 10, vortex street generation passage 11 and vortex street generator 12.
Preferably, vortex street generation passage 11 places the center of tested pipeline, and is concentric with gas pipeline.The xsect of vortex street generation passage 11 is rectangle, ellipse or circular.The front end of vortex street generation passage 11 is gas extractors 10, and the two is by casting or be welded into one, and gas flows into vortex street generation passage 11 again through gas extractor 10.Gas extractor 10 is the bucket shape passage, consistent with the shape of cross section of vortex street generation passage 11, the inlet of gas extractor 10 becomes rectangle, ellipse or circular, the area on plane, air intake opening place is greater than the cross-sectional area of vortex street generation passage 11, the front end inlet of the end port of gas extractor 10 vortex street generation just passage 11.
Be provided with vortex street generator 12 in the vortex street generation passage 11.Vortex street generator 12 is preferably by casting or being weldingly fixed in the vortex street generation passage 11.Vortex street generator 12 is for triangulo column and cylinder two ends are fixed on two opposing sidewalls of vortex street generation passage 11, and the xsect of triangulo column is parallel to airflow direction all the time.Preferably, the xsect of vortex street generator 12 is an isosceles oxygon, the summit of oxygon is near the front end inlet of vortex street generation passage 11, and the base of oxygon is parallel to the plane at front end inlet place of vortex street generation passage 11 and the plane at back outlet place.The center of gravity of the xsect of vortex street generator 12 equates to the distance of 11 two opposing sidewalls of vortex street generation passage.Between the center of gravity of vortex street generator 12 is to the distance on the plane at the front end inlet place of vortex street generation passage 11 1 times to 10 times to the distance on the plane at the back outlet place of vortex street generation passage 11.
Ultrasonic sensor 8 is installed on 11 two opposing sidewalls of vortex street generation passage in two symmetrical holes and periphery is coated with airtight cable box.Ultrasonic sensor 8 is divided into transmission and receives two parts.
Below, based on the composition structure of above-mentioned ultrasound wave vortex shedding flow meter its installation and measuring process are described.
When measuring flow with above-mentioned ultrasound wave vortex shedding flow meter, the tested pipeline center that is complementary is inserted and adjusted to vortex street test section integral body, whole flowmeter is connected with tested pipeline by flange 5.When tested low speed, Ultra-Low Speed gas stream during, quicken, flow to vortex street generator 12 after the rectification through gas extractor 10 multiplications through the test section of flowmeter.At this moment, the vortex break-off that vortex street generator 12 front and rear part branch cause is realized the vibration of fluid being strengthened the best of breed that same-phase superposes at vortex street generator 12 rear portions on every side, has reduced the lower limit of metering, has improved the sensitivity that detects.Utilize the mobile vibration of vortex street generator 12 both sides to have the characteristics of 180 ° of phase differential simultaneously, the method that suppresses common mode interference signal with differential generator improves signal to noise ratio (S/N ratio), has further improved the interference free performance of flowmeter.
Ultrasound wave vortex shedding flow meter described in the utility model adopts the tight screw of twin-lock to add the structure that flange connects, and has made things convenient for dismounting when continuing to flow maintenance, has also improved the anti-explosion safety grade of instrument.Novel vortex street detection bodies had both satisfied highly sensitive requirement, had also further improved the precision of metering.This ultrasound wave vortex shedding flow meter is fit to the measurement to gas flow very much, the measurement of particularly ultralow flow velocity, low flow rate of gas.Certainly the measurement that more can satisfy the heavy caliber gas flow waits other various occasions.
Ultrasound wave vortex shedding flow meter of the present utility model has very wide range ratio and very little insertion loss.Use suits large area to popularize.
Claims (9)
1. ultrasound wave vortex shedding flow meter, comprise gauge outfit, connecting link and vortex street test section, described gauge outfit is connected by the described vortex street test section of described connecting link with its below, be connected with cable in the described connecting link and connect the internal circuit of described gauge outfit and the ultrasonic sensor in the described vortex street test section, described vortex street test section also comprises vortex street generation passage and is located at the interior vortex street generator of described vortex street generation passage, it is characterized in that, described vortex street generator is that triangulo column and cylinder two ends are fixed on two opposing sidewalls of described vortex street generation passage, the transverse cross-section parallel of described triangulo column is in the airflow direction of tested pipeline, and described connecting link top is provided with flange and the tight screw structural of twin-lock that is used for connecting described tested pipeline.
2. vortex shedding flow meter as claimed in claim 1 is characterized in that, described vortex street test section also is included in the gas extractor that described vortex street generation passage front end fuses with it.
3. vortex shedding flow meter as claimed in claim 2 is characterized in that, described gas extractor is the bucket shape passage.
4. vortex shedding flow meter as claimed in claim 3, it is characterized in that, described gas extractor inlet and described vortex street generation channel cross-section are rectangle, circle or oval, and described gas extractor inlet area is greater than the area of described vortex street generation channel cross-section.
5. vortex shedding flow meter as claimed in claim 1 is characterized in that, the xsect of described vortex street generator is an isosceles oxygon.
6. vortex shedding flow meter as claimed in claim 5 is characterized in that, the plane that the summit of described isosceles oxygon is parallel to the inlet place of described vortex street generation passage towards the inlet and the base of described vortex street generation passage.
7. as claim 5 or 6 described vortex shedding flow meters, it is characterized in that the center of gravity of the xsect of described vortex street generator equates to the distance of two opposing sidewalls of described vortex street generation passage.
8. as claim 1,5 or 6 described vortex shedding flow meters, it is characterized in that, between the center of gravity of described vortex street generator is to the distance on the plane at the inlet place of described vortex street generation passage 1 times to 10 times to the distance on the plane at the outlet place of described vortex street generation passage.
9. vortex shedding flow meter as claimed in claim 1 is characterized in that, described ultrasonic sensor is installed on two opposing sidewalls of described vortex street generation passage in two symmetrical holes and periphery is coated with airtight cable box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200070735U CN201945333U (en) | 2011-01-11 | 2011-01-11 | Ultrasonic vortex flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200070735U CN201945333U (en) | 2011-01-11 | 2011-01-11 | Ultrasonic vortex flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201945333U true CN201945333U (en) | 2011-08-24 |
Family
ID=44472672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200070735U Expired - Lifetime CN201945333U (en) | 2011-01-11 | 2011-01-11 | Ultrasonic vortex flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201945333U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116649A (en) * | 2011-01-11 | 2011-07-06 | 上海科洋科技发展有限公司 | Ultrasonic vortex flow meter and installation method thereof |
| CN105675065A (en) * | 2014-10-31 | 2016-06-15 | 因文西斯系统公司 | Split flow vortex flowmeter |
| EP3441727A1 (en) * | 2017-08-09 | 2019-02-13 | Georg Fischer Signet, LLC | Insertion ultrasonic sensor assembly |
| CN112484792A (en) * | 2020-10-19 | 2021-03-12 | 姚贤卿 | Isolation replacement/injection type induction vortex street flowmeter |
-
2011
- 2011-01-11 CN CN2011200070735U patent/CN201945333U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116649A (en) * | 2011-01-11 | 2011-07-06 | 上海科洋科技发展有限公司 | Ultrasonic vortex flow meter and installation method thereof |
| CN105675065A (en) * | 2014-10-31 | 2016-06-15 | 因文西斯系统公司 | Split flow vortex flowmeter |
| EP3441727A1 (en) * | 2017-08-09 | 2019-02-13 | Georg Fischer Signet, LLC | Insertion ultrasonic sensor assembly |
| CN109387253A (en) * | 2017-08-09 | 2019-02-26 | 乔治费希尔图章有限责任公司 | Insert Type Ultrasonic Transducers component |
| CN112484792A (en) * | 2020-10-19 | 2021-03-12 | 姚贤卿 | Isolation replacement/injection type induction vortex street flowmeter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102116649A (en) | Ultrasonic vortex flow meter and installation method thereof | |
| CN206362390U (en) | Fluid flow rate measurement apparatus and pipe-line | |
| CN201945333U (en) | Ultrasonic vortex flowmeter | |
| CN104359518B (en) | Fuel consumption measuring device | |
| CN102322907A (en) | Integrated intelligent gas flow meter with double flow measuring heads | |
| US10514283B2 (en) | Exhaust gas flow rate measuring unit and exhaust gas analyzing apparatus | |
| CN208060103U (en) | A kind of exhaust system quantity of gas leakage detection device | |
| CN201464245U (en) | Gas dust content sampling device | |
| CN105181038A (en) | Throttling device and throttling flowmeter | |
| CN105157884B (en) | Ultrasonic calorimeter | |
| CN202057366U (en) | Wide-range intelligence gas flow meter | |
| CN204514402U (en) | A kind of differential pressure mass flowmeter for vortex street | |
| CN204027885U (en) | A kind of blast furnace gas dust content is measured and is used filter membrane sampling device | |
| CN106768095A (en) | High accuracy magneto-electric vortex-shedding meter | |
| CN202304962U (en) | Air tunnel type speed-area-method air flow calibration device | |
| CN208383199U (en) | A kind of bigbore flowmeter | |
| CN201795815U (en) | Anti-blocking type low-speed pipe flow meter | |
| CN202928632U (en) | V-shaped inner cone flowmeter | |
| CN204788525U (en) | Anti -pollution runner structure of ultrasonic flowmeter | |
| CN205079804U (en) | Throttling arrangement and throttling flow meter | |
| CN204514403U (en) | A kind of differential pressure mass flowmeter for vortex street | |
| CN203572515U (en) | Plug-in gas parameter measurement instrument | |
| CN201188008Y (en) | Novel insertion type ultrasound vortex street effusion meter | |
| CN2919197Y (en) | Plug-in-type multi-throat flow measuring device equipped with accelerating installation | |
| CN207662471U (en) | A kind of damping type vortex-shedding meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI KEYONTECHS CO., LTD. Free format text: FORMER NAME: SHANGHAI KEYONTECHS DEVELOPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 201502 room 3, hall 38, Lane 168, Lane 19, welfare Road, Xingcheng Town, Shanghai, Jinshan District Patentee after: SHANGHAI KEYONTECHS CO., LTD. Address before: 201502 room 3, hall 38, Lane 168, Lane 19, welfare Road, Xingcheng Town, Shanghai, Jinshan District Patentee before: Shanghai Keyontechs Development Co., Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: Jinshan District Fengjing town 201501 Shanghai Xinghao Road No. 7 Patentee after: SHANGHAI KEYONTECHS CO., LTD. Address before: 201502 room 3, hall 38, Lane 168, Lane 19, welfare Road, Xingcheng Town, Shanghai, Jinshan District Patentee before: SHANGHAI KEYONTECHS CO., LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110824 |