CN101893462A - Extension-type Venturi tube and processing method and application method thereof - Google Patents
Extension-type Venturi tube and processing method and application method thereof Download PDFInfo
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- CN101893462A CN101893462A CN 201010210625 CN201010210625A CN101893462A CN 101893462 A CN101893462 A CN 101893462A CN 201010210625 CN201010210625 CN 201010210625 CN 201010210625 A CN201010210625 A CN 201010210625A CN 101893462 A CN101893462 A CN 101893462A
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- venturi tube
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Abstract
The invention discloses an extension-type Venturi tube and processing method and application method thereof, comprising a Venturi tube; wherein the Venturi tube is externally sheathed with a Venturi tube sleeve. The Venturi tube is composed of a front constricted tube, a middle tube and a rear diffusion tube, the inner diameter of the sleeve is equal to the maximum outer diameter of the front tube of the Venturi tube, and the two ends of the front constricted tube and the rear diffusion tube are fixed in the sleeve. The invention adds a sleeve to the original rolling plate type Venturi tube, thus greatly improving assembling accuracy. Fluid moves in a totally-enclosed sleeve, thus greatly improving compression strength of the invention and reducing possible leakage point, so that the Venturi tube can bear overhigh working pressure or can be used for flow measurement of danger medium. Meanwhile double insurance function is realized when bearing overhigh working pressure or being used for flow measurement of danger medium.
Description
Technical field
The present invention relates to a kind of extension-type Venturi tube and job operation thereof and using method.
Background technology
Usually the rolled plate Venturi tube of design is made of behind assembly welding joint flange, anterior pipe, preceding collapsible tube, central tube (throat's pipe), back anemostat, positive and negative grading ring, positive and negative pressure guiding pipe.
Because each paragraph of rolled plate Venturi tube (anterior pipe, preceding collapsible tube, central tube, back anemostat) is to roll welding by sheet material to form, thereby the device wall thickness is general consistent with process pipe, can be too not thick, in case Venturi tube technology caliber is excessive, since deadweight, very easily distortion behind the assembly welding.
Because some rolled plate Venturi tube of specific (special) requirements also will be born too high working pressure or will be used for the flow measurement of danger medium, the Venturi tube of design is difficult to bear above-mentioned work usually.
Summary of the invention
The rolled plate Venturi tube that the technical issues that need to address of the present invention just are to overcome common design is in heavy caliber and high pressure, the defective that exists when danger medium is measured, a kind of extension-type Venturi tube and job operation thereof and using method are provided, it increases one deck sleeve pipe outside former rolled plate Venturi tube, casing wall thickness equals or be slightly larger than the Venturi tube wall thickness, thereby has improved device welding stability and bulk strength.
For addressing the above problem, the present invention adopts following technical scheme:
A kind of extension-type Venturi tube of the present invention comprises Venturi tube, and described Venturi tube is set with a Venturi tube sleeve pipe outward.
Described Venturi tube is made of preceding collapsible tube, central tube and back anemostat, and described casing inner diameter equals the anterior pipe of Venturi tube maximum outside diameter, and preceding collapsible tube is fixed in the sleeve pipe with anemostat two ends, back.
Described sleeve pipe front portion is provided with positive pressure guiding pipe, is provided with positive pressure grading ring between described positive pressure guiding pipe and the sleeve pipe; Sleeve pipe middle part, be provided with negative pressure guiding pipe corresponding to Venturi tube central tube position, be provided with negative impulse base between sleeve pipe and the negative pressure guiding pipe, central tube is provided with negative pressure grading ring, negative pressure grading ring and bear to quote metal hose is installed between the base.
The front-end and back-end of described sleeve pipe are connected with joint flange respectively.
The present invention discloses a kind of job operation of described extension-type Venturi tube, to after shaping is proofreaied and correct, insert in the Venturi tube sleeve pipe by the Venturi tube that preceding collapsible tube, central tube and back anemostat assembly welding form, insert to bear the metal hose in the pressure grading ring on the Venturi tube and be introduced into and bear in the impulse base aperture, the negative impulse base of burn-oning in negative impulse base aperture reaches negative pressure guiding pipe, at sleeve pipe front end burn-on positive pressure grading ring and positive pressure guiding pipe, the joint flange of burn-oning at the sleeve pipe two ends is at last promptly finished the welding job of extension-type Venturi tube assembly.
The invention also discloses a kind of described extension-type Venturi tube using method: fluid is drawn malleation through positive pressure grading ring, positive pressure guiding pipe in sleeve pipe; Draw negative pressure through sleeve pipe, negative pressure grading ring, metal hose, negative impulse base and negative pressure guiding pipe, finish the process that pressure is drawn in the flow rate test.
The present invention has improved assembly precision greatly because of increased outer tube on former rolled plate Venturi tube.Because fluid is to move in totally enclosed sleeve pipe, increased compressive resistance of the present invention greatly, reduced possible leak point, thereby can bear too high working pressure or be used for the flow measurement of danger medium.When bearing too high working pressure or be used for the flow measurement of danger medium, play simultaneously the effect of dual fail-safe.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure: 1, Venturi tube sleeve pipe; 2, positive pressure guiding pipe; 3, positive pressure grading ring; 4, negative impulse base; 5, negative pressure guiding pipe; 6, metal hose; 7, negative pressure grading ring; 8, Venturi tube; 8-1, preceding collapsible tube; 8-2, central tube; 8-3, back anemostat; 9, joint flange.
Embodiment
As shown in Figure 1, a kind of extension-type Venturi tube of the present invention comprises Venturi tube 8, and described Venturi tube is set with a Venturi tube sleeve pipe 1 outward.
Described Venturi tube is made of preceding collapsible tube 8-1, central tube 8-2 and back anemostat 8-3, and described casing inner diameter equals the anterior pipe of Venturi tube maximum outside diameter, and preceding collapsible tube is fixed in the sleeve pipe with anemostat two ends, back.
Described sleeve pipe front portion is provided with positive pressure guiding pipe 2, is provided with positive pressure grading ring 3 between described positive pressure guiding pipe and the sleeve pipe; Be provided with in the middle part of the sleeve pipe, corresponding to Venturi tube central tube position and bear pressure guiding pipe 5, be provided with negative impulse base 4 between sleeve pipe and the negative pressure guiding pipe, central tube is provided with negative pressure grading ring 7, bears the pressure grading ring and bear to quote metal hose 6 is installed between the base.
The front-end and back-end of described sleeve pipe are connected with joint flange 9 respectively.
The job operation of described extension-type Venturi tube is: will insert in the Venturi tube sleeve pipe after shaping is proofreaied and correct by the Venturi tube that preceding collapsible tube, central tube and back anemostat assembly welding form, insert to bear the metal hose in the pressure grading ring on the Venturi tube and be introduced into and bear in the impulse base aperture, the negative impulse base of burn-oning in negative impulse base aperture reaches negative pressure guiding pipe, at sleeve pipe front end burn-on positive pressure grading ring and positive pressure guiding pipe, the joint flange of burn-oning at the sleeve pipe two ends is at last promptly finished the welding job of extension-type Venturi tube assembly.
Fluid is drawn malleation through positive pressure grading ring, positive pressure guiding pipe in sleeve pipe; Draw negative pressure through sleeve pipe, negative pressure grading ring, metal hose, negative impulse base and negative pressure guiding pipe, finish the process that pressure is drawn in the flow rate test.The direction of arrow is the measured medium flow direction among Fig. 1.
The present invention has improved assembly precision greatly because of increased outer tube on former rolled plate Venturi tube.Because fluid is to move in totally enclosed sleeve pipe, increased compressive resistance of the present invention greatly, reduced possible leak point, thereby can bear too high working pressure or be used for the flow measurement of danger medium.When bearing too high working pressure or be used for the flow measurement of danger medium, play simultaneously the effect of dual fail-safe.
It should be noted that at last: obviously, the foregoing description only is for example of the present invention clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among protection scope of the present invention.
Claims (6)
1. an extension-type Venturi tube comprises Venturi tube, it is characterized in that: described Venturi tube is set with a Venturi tube sleeve pipe outward.
2. extension-type Venturi tube as claimed in claim 1, it is characterized in that: described Venturi tube is made of preceding collapsible tube, central tube and back anemostat, described casing inner diameter equals the anterior pipe of Venturi tube maximum outside diameter, and preceding collapsible tube is fixed in the sleeve pipe with anemostat two ends, back.
3. extension-type Venturi tube as claimed in claim 2 is characterized in that: described sleeve pipe front portion is provided with positive pressure guiding pipe, is provided with positive pressure grading ring between described positive pressure guiding pipe and the sleeve pipe; Sleeve pipe middle part, be provided with negative pressure guiding pipe corresponding to Venturi tube central tube position, be provided with negative impulse base between sleeve pipe and the negative pressure guiding pipe, central tube is provided with negative pressure grading ring, negative pressure grading ring and bear to quote metal hose is installed between the base.
4. extension-type Venturi tube as claimed in claim 3 is characterized in that: the front-end and back-end of described sleeve pipe are connected with joint flange respectively.
5. the job operation of extension-type Venturi tube as claimed in claim 4, it is characterized in that: will after shaping is proofreaied and correct, insert in the Venturi tube sleeve pipe by the Venturi tube that preceding collapsible tube, central tube and back anemostat assembly welding form, insert to bear the metal hose in the pressure grading ring on the Venturi tube and be introduced into and bear in the impulse base aperture, the negative impulse base of burn-oning in negative impulse base aperture reaches negative pressure guiding pipe, at sleeve pipe front end burn-on positive pressure grading ring and positive pressure guiding pipe, the joint flange of burn-oning at the sleeve pipe two ends is at last promptly finished the welding job of extension-type Venturi tube assembly.
Extension-type Venturi tube as claimed in claim 4 using method, it is characterized in that: fluid is drawn malleation through positive pressure grading ring, positive pressure guiding pipe in sleeve pipe; Draw negative pressure through sleeve pipe, negative pressure grading ring, metal hose, negative impulse base and negative pressure guiding pipe, finish the process that pressure is drawn in the flow rate test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010210625 CN101893462A (en) | 2010-06-28 | 2010-06-28 | Extension-type Venturi tube and processing method and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010210625 CN101893462A (en) | 2010-06-28 | 2010-06-28 | Extension-type Venturi tube and processing method and application method thereof |
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| CN101893462A true CN101893462A (en) | 2010-11-24 |
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| CN 201010210625 Pending CN101893462A (en) | 2010-06-28 | 2010-06-28 | Extension-type Venturi tube and processing method and application method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269605A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Bypass flow monitoring device and anaesthesia device including same |
| CN103691858A (en) * | 2013-11-06 | 2014-04-02 | 江阴市节流装置厂有限公司 | Method for forging venturi pipe |
| CN104215360A (en) * | 2014-10-08 | 2014-12-17 | 王可崇 | Calorimeter based on novel movable Venturi tube flowmeter |
| CN104501884A (en) * | 2014-12-08 | 2015-04-08 | 上海科洋科技股份有限公司 | Rectangular flowmeter |
| CN106482794A (en) * | 2016-10-28 | 2017-03-08 | 东风商用车有限公司 | A kind of EGR engine differential pressure type flowmeter |
| CN109141548A (en) * | 2018-09-14 | 2019-01-04 | 杭州成套节流装置有限公司 | A kind of Venturi nozzle and processing technology |
| CN111633974A (en) * | 2020-06-05 | 2020-09-08 | 中国海洋石油集团有限公司 | Processing method of composite nested pipe |
| CN113770306A (en) * | 2021-08-10 | 2021-12-10 | 山东泰开环保科技有限公司 | Production method of CFB (circulating fluidized bed) semi-dry desulfurization tower casting type Venturi assembly |
| CN115971320A (en) * | 2022-12-27 | 2023-04-18 | 江苏省埃迪机电设备实业有限公司 | Forming process and device for valve body of Venturi valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4651572A (en) * | 1985-02-20 | 1987-03-24 | Krupp-Koppers Gmbh | Venturi tube |
| CN1553150A (en) * | 2003-06-03 | 2004-12-08 | 西安中望流量仪表有限公司 | Inside-hiding throttler |
| CN2689184Y (en) * | 2003-09-24 | 2005-03-30 | 刘建华 | Veneer reeling nozzles |
| CN201622084U (en) * | 2010-01-29 | 2010-11-03 | 陕西仪新测控仪表有限公司 | Novel built-in throttling device |
| CN201697647U (en) * | 2010-06-28 | 2011-01-05 | 江阴市节流装置厂有限公司 | Extension-type Venturi tube |
-
2010
- 2010-06-28 CN CN 201010210625 patent/CN101893462A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4651572A (en) * | 1985-02-20 | 1987-03-24 | Krupp-Koppers Gmbh | Venturi tube |
| CN1553150A (en) * | 2003-06-03 | 2004-12-08 | 西安中望流量仪表有限公司 | Inside-hiding throttler |
| CN2689184Y (en) * | 2003-09-24 | 2005-03-30 | 刘建华 | Veneer reeling nozzles |
| CN201622084U (en) * | 2010-01-29 | 2010-11-03 | 陕西仪新测控仪表有限公司 | Novel built-in throttling device |
| CN201697647U (en) * | 2010-06-28 | 2011-01-05 | 江阴市节流装置厂有限公司 | Extension-type Venturi tube |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269605A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Bypass flow monitoring device and anaesthesia device including same |
| CN103691858A (en) * | 2013-11-06 | 2014-04-02 | 江阴市节流装置厂有限公司 | Method for forging venturi pipe |
| CN104215360A (en) * | 2014-10-08 | 2014-12-17 | 王可崇 | Calorimeter based on novel movable Venturi tube flowmeter |
| CN104215360B (en) * | 2014-10-08 | 2018-04-03 | 王可崇 | Calorimeter based on novel movable differential pressure type flowmeter |
| CN104501884A (en) * | 2014-12-08 | 2015-04-08 | 上海科洋科技股份有限公司 | Rectangular flowmeter |
| CN106482794B (en) * | 2016-10-28 | 2023-10-24 | 东风商用车有限公司 | Venturi flowmeter of EGR engine |
| CN106482794A (en) * | 2016-10-28 | 2017-03-08 | 东风商用车有限公司 | A kind of EGR engine differential pressure type flowmeter |
| CN109141548A (en) * | 2018-09-14 | 2019-01-04 | 杭州成套节流装置有限公司 | A kind of Venturi nozzle and processing technology |
| CN111633974B (en) * | 2020-06-05 | 2022-05-03 | 中国海洋石油集团有限公司 | Processing method of composite nested pipe |
| CN111633974A (en) * | 2020-06-05 | 2020-09-08 | 中国海洋石油集团有限公司 | Processing method of composite nested pipe |
| CN113770306A (en) * | 2021-08-10 | 2021-12-10 | 山东泰开环保科技有限公司 | Production method of CFB (circulating fluidized bed) semi-dry desulfurization tower casting type Venturi assembly |
| CN115971320A (en) * | 2022-12-27 | 2023-04-18 | 江苏省埃迪机电设备实业有限公司 | Forming process and device for valve body of Venturi valve |
| CN115971320B (en) * | 2022-12-27 | 2023-06-20 | 江苏省埃迪机电设备实业有限公司 | Venturi valve body forming process and forming device |
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Open date: 20101124 |