CN201463945U - Composite flow sensor of Venturi tube - Google Patents
Composite flow sensor of Venturi tube Download PDFInfo
- Publication number
- CN201463945U CN201463945U CN200920128190XU CN200920128190U CN201463945U CN 201463945 U CN201463945 U CN 201463945U CN 200920128190X U CN200920128190X U CN 200920128190XU CN 200920128190 U CN200920128190 U CN 200920128190U CN 201463945 U CN201463945 U CN 201463945U
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- flow sensor
- venturi tube
- cylindrical shape
- throttle element
- spare
- Prior art date
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Abstract
The utility model relates to a composite flow sensor of a Venturi tube. The flow sensor comprises an inlet cylinder segment, a cone constricted tube, a cylindrical throat tube segment and a cone diffusion tube segment and is characterized in that the cylindrical throat tube segment is internally provided with at least one composite throttle element capable of changing the fluid velocity. The composite throttle element can be a wedge-shaped throttle element, a cone-shaped throttle element or a porous throttle element and the like. The utility model adopts the throttle element, and the differential pressure can be increased by tens of times by multiple rectification; in addition, the loss of pressure is small, and the span ratio of flow is great; the flow sensor does not have requirement of a straight tube segment, namely, the flow sensor does not have the straight tube segment; moreover, the accuracy of the sensor is improved from 1.0 level to more than 0.5 level, wherein the highest accuracy can be 0.2 level.
Description
Technical field
The utility model relates to flow measurement device, specifically is a kind of compound Venturi tube flow sensor.
Background technology
Existing Venturi tube flow sensor measuring accuracy is 1.0 grades, sensor requires between 3D-8D flow development length when 0.5% uncertainty, when measuring low-pressure, low flow velocity is when low discharge, the gas medium of large diameter pipeline, the differential pressure that produces is quite little, must adopt differential pressure transmitter, so both increase corresponding engineering cost, maintenance cost, increase measuring error again; When being used for many equipment house steward flow measurement, because flow range is very big, flow is very little when only opening an equipment at the project initial stage, causes very big measuring error like this.
Summary of the invention
The purpose of this utility model just provides a kind of compound Venturi tube flow sensor.It not only can effectively solve problems of measurement, the influence of solution flow development length deficiency to measuring of low differential pressure, can also solve the big problem of flow range by changing throat or throat's throttling element; Measuring accuracy is brought up to more than 0.5 grade by 1.0 grades, is up to 0.2 grade.
The purpose of this utility model is to realize by such technical scheme, promptly a kind of compound Venturi tube flow sensor, and it comprises inlet cylindrical section, circular cone contraction section, cylindrical shape throat and circular cone diffuser in order; It is characterized in that: be provided with the composite throttling spare that at least one can change fluid velocity in the pipeline section of described cylindrical shape throat.
The utility model is owing to adopted the repeatedly rectification of two kinds or two above throttling elements, and differential pressure can increase several times to tens times, can not have flow development length before and after the sensor mounting points, and measuring accuracy has also been brought up to more than 0.5 grade.When measuring many equipment house steward flow, initial stage only open an equipment and latter stage the equipment standard-sized sheet, can change cylindrical shape throat according to the flow size, adjust composite throttling spare, the size that adapts to flow, can guarantee that like this differential pressure is enough big, reduce measuring error, can also guarantee that measuring accuracy is more than 0.5 grade.
Owing to adopted technique scheme, the utility model to solve the flow measurement problem of low pressure, low flow velocity, low discharge and low differential pressure, eliminated of the influence of flow development length deficiency to measuring, enlarged the flow range degree, improved measuring accuracy.
Description of drawings
Said structure of the present utility model can further specify by the embodiment that accompanying drawing provides.
The utility model has following accompanying drawing:
Accompanying drawing 1 is the structural representation of the compound wedge shape throttling element of the utility model.
Accompanying drawing 2 is used for the structural representation that example is implemented in many equipment of horizontal pipe house steward gasmetry for the compound wedge shape throttling element of the utility model;
Among the figure: the 1-cylindrical section that enters the mouth; 2-circular cone contraction section; 3-pilot pipeline; 4-card extender or three valve group plates; The 5-differential pressure transmitter; 6-cylindrical shape throat; 7-composite throttling spare; The 8-mounting flange; 9-circular cone diffuser.
Embodiment
Referring to accompanying drawing, the utility model comprises inlet cylindrical section 1, circular cone collapsible tube 2, cylindrical shape throat pipeline section 6 and circular cone diffusion pipeline section 9 in order; It is characterized in that: be provided with at least one composite throttling spare that can change fluid velocity 7. in the pipeline section of described cylindrical shape throat 6
Described composite throttling spare 7 is conically shaped body, sphenoid or porous plate.
Described composite throttling spare 7 welds with the pipeline section inwall of cylindrical shape throat 6.
A 1-3 composite throttling spare 7 is set in the pipeline section of cylindrical shape throat 6.Described composite throttling spare 7 axially or radially is provided with along cylindrical shape throat 6.
The two ends of described cylindrical shape throat 6 are connected with circular cone diffuser 9 with circular cone contraction section 2 by mounting flange 8 respectively.
When measuring, according to opening device what,, adjust the throat diameter size and composite throttling spare 7 sizes of cylindrical shape throat 6 and adjust differential pressure range by changing cylindrical shape throat 6, guarantee that differential pressure is enough big, improved measuring accuracy.
The utility model adopts simple process structure, has solved the problems of measurement of low differential pressure, has solved the influence of flow development length deficiency to measuring, and has solved the flow range influence to measuring greatly, and measuring accuracy is brought up to 0.5 grade by 1.0 grades.Use is originally novel to have: several times or the big differential pressure of tens of multiplication and the pressure loss are little, have avoided the use differential pressure transmitter, have reduced engineering cost; Need not flow development length, strengthened the anti-interference of measuring; Can adjust cylindrical shape throat diameter and throat's composite throttling spare according to operating position, solve the measuring error that the flow range ratio is brought greatly.The utility model is used for low-pressure, low pressure loss, and low flow velocity, bigbore gas flow measurement effect is remarkable, has improved measuring accuracy greatly.
Claims (5)
1. a compound Venturi tube flow sensor comprises inlet cylindrical section (1), circular cone collapsible tube (2), cylindrical shape throat pipeline section (6) and circular cone diffusion pipeline section (9) in order; It is characterized in that: be provided with at least one composite throttling spare that can change fluid velocity (7) in the pipeline section of described cylindrical shape throat (6).
2. compound Venturi tube flow sensor according to claim 1 is characterized in that: described composite throttling spare (7) is conically shaped body, sphenoid or porous plate.
3. compound Venturi tube flow sensor according to claim 1 and 2 is characterized in that: described composite throttling spare (7) welds with the pipeline section inwall of cylindrical shape throat (6).
4. described compound Venturi tube flow sensor according to claim 1 and 2 is characterized in that: a 1-3 composite throttling spare (7) is set in the pipeline section of cylindrical shape throat (6).
5. according to claim 1,2 or 4 described compound Venturi tube flow sensors, it is characterized in that: the two ends of described cylindrical shape throat (6) are connected with circular cone diffuser (9) with circular cone contraction section (2) by mounting flange (8) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920128190XU CN201463945U (en) | 2009-07-27 | 2009-07-27 | Composite flow sensor of Venturi tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920128190XU CN201463945U (en) | 2009-07-27 | 2009-07-27 | Composite flow sensor of Venturi tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201463945U true CN201463945U (en) | 2010-05-12 |
Family
ID=42391296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920128190XU Expired - Fee Related CN201463945U (en) | 2009-07-27 | 2009-07-27 | Composite flow sensor of Venturi tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201463945U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925954A (en) * | 2014-05-08 | 2014-07-16 | 邵朋诚 | Venturi orifice plate |
| CN104501884A (en) * | 2014-12-08 | 2015-04-08 | 上海科洋科技股份有限公司 | Rectangular flowmeter |
| CN104697597A (en) * | 2015-03-13 | 2015-06-10 | 陈少庆 | Pressure signal flow digital display instrument and application method |
| CN104897221A (en) * | 2014-03-07 | 2015-09-09 | 华东理工大学 | Solid phase flow continuous measuring system and measuring method for pneumatic conveying process |
| CN104897222A (en) * | 2014-03-07 | 2015-09-09 | 华东理工大学 | Solid phase flow measuring system and measuring method for dense phase pneumatic conveying process |
| CN105545281A (en) * | 2015-11-30 | 2016-05-04 | 中国石油天然气股份有限公司 | Gas throttling simulator |
| KR20160089850A (en) * | 2015-01-20 | 2016-07-28 | 양정승 | Flowmeter |
| CN106197576A (en) * | 2016-07-18 | 2016-12-07 | 邵朋诚 | Venturi conical pipe flowmeter |
| CN108871471A (en) * | 2018-07-25 | 2018-11-23 | 上海科洋科技股份有限公司 | A kind of balance Venturi meter |
| CN109990849A (en) * | 2013-09-26 | 2019-07-09 | 保罗·范巴斯科克 | Orifice plate |
| WO2020091384A1 (en) * | 2018-10-30 | 2020-05-07 | 주식회사 대한인스트루먼트 | Venturi flowmeter |
-
2009
- 2009-07-27 CN CN200920128190XU patent/CN201463945U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990849A (en) * | 2013-09-26 | 2019-07-09 | 保罗·范巴斯科克 | Orifice plate |
| CN104897221A (en) * | 2014-03-07 | 2015-09-09 | 华东理工大学 | Solid phase flow continuous measuring system and measuring method for pneumatic conveying process |
| CN104897222A (en) * | 2014-03-07 | 2015-09-09 | 华东理工大学 | Solid phase flow measuring system and measuring method for dense phase pneumatic conveying process |
| CN104897221B (en) * | 2014-03-07 | 2018-03-09 | 华东理工大学 | The solid flow continuous measurement system and measuring method of process of pneumatic transmission |
| CN104897222B (en) * | 2014-03-07 | 2018-03-02 | 华东理工大学 | The solid flow measuring system and measuring method of During Dense Phase Pneumatic Transportation |
| CN103925954A (en) * | 2014-05-08 | 2014-07-16 | 邵朋诚 | Venturi orifice plate |
| CN104501884A (en) * | 2014-12-08 | 2015-04-08 | 上海科洋科技股份有限公司 | Rectangular flowmeter |
| KR101721200B1 (en) * | 2015-01-20 | 2017-03-29 | 양정승 | Flowmeter |
| KR20160089850A (en) * | 2015-01-20 | 2016-07-28 | 양정승 | Flowmeter |
| CN104697597A (en) * | 2015-03-13 | 2015-06-10 | 陈少庆 | Pressure signal flow digital display instrument and application method |
| CN105545281A (en) * | 2015-11-30 | 2016-05-04 | 中国石油天然气股份有限公司 | Gas throttling simulator |
| CN106197576A (en) * | 2016-07-18 | 2016-12-07 | 邵朋诚 | Venturi conical pipe flowmeter |
| CN106197576B (en) * | 2016-07-18 | 2019-04-09 | 邵朋诚 | Venturi conical pipe flowmeter |
| CN108871471A (en) * | 2018-07-25 | 2018-11-23 | 上海科洋科技股份有限公司 | A kind of balance Venturi meter |
| WO2020091384A1 (en) * | 2018-10-30 | 2020-05-07 | 주식회사 대한인스트루먼트 | Venturi flowmeter |
| CN113167611A (en) * | 2018-10-30 | 2021-07-23 | 大韩仪器株式会社 | Venturi flow meter |
| US11365993B2 (en) | 2018-10-30 | 2022-06-21 | Dae Han Instrument Co., Ltd | Venturi flowmeter having a replaceable tube insert and ring element inserted in the main orifice of the venturi |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: CHONGQING TUOZHAN AUTOMATION INSTRUMENT CO., LTD. Assignor: Xiang Jiacong Contract record no.: 2011500000058 Denomination of utility model: Composite flow sensor of Venturi tube Granted publication date: 20100512 License type: Exclusive License Record date: 20110914 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20160727 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |