CN106568486B - Full jacket type vortex shedding flowmeter - Google Patents
Full jacket type vortex shedding flowmeter Download PDFInfo
- Publication number
- CN106568486B CN106568486B CN201610728864.4A CN201610728864A CN106568486B CN 106568486 B CN106568486 B CN 106568486B CN 201610728864 A CN201610728864 A CN 201610728864A CN 106568486 B CN106568486 B CN 106568486B
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- China
- Prior art keywords
- fluid pipeline
- steam
- clamp cover
- vortex street
- vortex
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/10—Preventing damage by freezing or excess pressure or insufficient pressure
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Measuring Volume Flow (AREA)
Abstract
The utility model provides a full jacket type vortex shedding flowmeter, including fluid pipeline, vortex street generator in the fluid pipeline, the sensor of vortex street generator rear side, sensor casing on the fluid pipeline lateral wall, be connected the polished rod with sensor casing, be connected with the gauge outfit of polished rod, the fluid pipeline overcoat is equipped with the clamp cover, the clearance between clamp cover and the fluid pipeline outer wall constitutes the heating channel, be provided with the baffle between clamp cover and the fluid pipeline, divide into two upper and lower cavities with the heating channel, the through-hole has been seted up at vortex street generator center, two cavities about the through-hole intercommunication, one side of upper cavity is provided with the steam intake pipe, the opposite side sets up the same side of steam communicating pipe connection lower cavity, lower cavity and steam intake pipe homonymy are provided with the steam outlet duct, be provided with the flow distribution valve on the steam communicating pipe. The method is suitable for enterprises such as petrochemical industry, and the like, which are easy to generate condensate and crystallization, so that maintenance is avoided, errors are reduced, trade disputes are reduced, and the method is safe to use.
Description
Technical Field
The invention relates to the field of vortex shedding flowmeters.
Background
In the fields of chemical industry, petrochemical industry and the like, a plurality of fluids which are easy to generate phase change in use, such as gaseous sulfur in acid gas, urea in urea solution, caprolactam and the like, are present, and in the fluid conveying process, due to the continuous decrease of temperature, finally, the components which are easy to generate phase change in the middle are condensed or crystallized, and are changed from the gaseous state to the liquid state, or are changed from the liquid state to the solid state, even are directly changed from the gaseous state to the solid state, and are condensed on the liquid receiving surface of the flowmeter, so that the topology appearance of the liquid receiving part of the vortex street flowmeter is damaged, and the vortex street flowmeter cannot generate normal karman vortex street, and measurement fails.
Traditional jacket structure: only the outer jacket, only the outer surface of the flow tube is heated. Because the heat transfer of stainless steel material is poor, the heat transferred to the vortex street generator through the jacket is insufficient, and the vortex street generator is positioned in the area with the highest flow velocity, the fluid has a strong heat dissipation effect on the vortex street generator, so that the temperature of the inner surface of the flow pipe is higher, the temperature of the generator is lower, and the temperature difference of up to 300 ℃ can be generated in extreme cases. Even if the inner wall of the pipeline is not adhered, condensation or crystallization on the surface of the vortex street generator cannot be avoided, so that karman vortex street cannot be generated, and finally measurement fails.
Disclosure of Invention
The invention provides a full-jacket vortex shedding flowmeter which is characterized in that steam is directly introduced into the generator except a pipeline interlayer, a flow distribution valve is arranged at the outer end, the opening of the flow distribution valve is adjusted according to the actual situation on site, and the flow proportion of heating medium flowing through a jacket and the generator is distributed, so that the temperature of the inner wall and the generator is balanced, the liquid receiving temperature of all components is far higher than the condensing temperature or the crystallization temperature of the medium, and the condensation/crystallization is stopped.
In order to achieve the purpose of the invention, the following technical scheme is provided: the utility model provides a full jacket type vortex shedding flowmeter, including fluid pipeline, vortex street generator in the fluid pipeline, the sensor of vortex street generator rear side, sensor casing on the fluid pipeline lateral wall, be connected the polished rod with the sensor casing, be connected with the gauge outfit of polished rod, its characterized in that fluid pipeline overcoat is equipped with the clamp cover, the clearance between clamp cover and the fluid pipeline outer wall constitutes the heating channel, be provided with the baffle between clamp cover and the fluid pipeline, divide into two upper and lower cavities with the heating channel, the through-hole has been seted up at vortex street generator center, the through-hole intercommunication upper and lower two cavities, one side of upper cavity is provided with the steam intake pipe, the opposite side sets up the same side of steam communicating pipe connection lower cavity, lower cavity and steam intake pipe homonymy are provided with the steam outlet duct, be provided with the flow distribution valve on the steam communicating pipe.
Preferably, the polish rod is provided with a heat sink.
Preferably, the baffle is disposed in the center of the fluid conduit, the upper and lower chambers are equally divided.
The invention has the beneficial effects that: the method is suitable for enterprises such as petrochemical industry, and the like, which are easy to generate condensate and crystallization, so that maintenance is avoided, errors are reduced, trade disputes are reduced, and the method is safe to use. Compared with the common jacket, the temperature of the liquid receiving part is uniform, and the condensate is completely eradicated.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a cross-sectional view of fig. 1.
Fig. 3 is a right side view of fig. 1.
Fig. 4 is a cross-sectional view of fig. 3.
Fig. 5 is a schematic diagram of steam flow.
Detailed Description
Example 1: a full-jacket vortex shedding flowmeter comprises a fluid pipeline 1, a vortex shedding generator 2 in the fluid pipeline 1, a sensor 3 at the rear side of the vortex shedding generator 2, a sensor shell 4 on the side wall of the fluid pipeline 1, a polish rod 5 connected with the sensor shell 4, and a gauge outfit 6 connected with the polish rod 5, wherein a jacket 7 is sleeved outside the fluid pipeline 1, a heating channel is formed by a gap between the jacket 7 and the outer wall of the fluid pipeline 1, a partition plate 8 is arranged between the jacket 7 and the fluid pipeline 1, the partition plate 8 is arranged at the center of the fluid pipeline 1 and divides the heating channel into an upper cavity (9) and a lower cavity (10) which are equally divided, a through hole 2.1 is formed in the center of the vortex shedding generator 2, the through hole 2.1 is communicated with the upper cavity (9) and the lower cavity (10), one side of the upper cavity 9 is provided with a steam inlet pipe 11, the other side of the upper cavity is provided with a steam communicating pipe 12 connected with the lower cavity 10, the lower cavity 10 is provided with a steam outlet pipe 13 on the same side as the steam inlet pipe 11, and a flow distributing valve 15 is arranged on the steam communicating pipe 12. The polish rod 5 is provided with a heat sink 14.
In order to facilitate the installation of users, the invention can freely select steam joints on site according to the steam source direction on site, thereby avoiding complex connection pipes caused by different steam source directions and different inlet positions.
Claims (3)
1. The utility model provides a full jacket type vortex shedding flowmeter, including fluid pipeline, vortex street generator in the fluid pipeline, the sensor of vortex street generator rear side, sensor casing on the fluid pipeline lateral wall, be connected the polished rod with the sensor casing, be connected with the gauge outfit of polished rod, its characterized in that fluid pipeline overcoat is equipped with the clamp cover, the clearance between clamp cover and the fluid pipeline outer wall constitutes the heating channel, be provided with the baffle between clamp cover and the fluid pipeline, divide into two upper and lower cavities with the heating channel, the through-hole has been seted up at vortex street generator center, the through-hole intercommunication upper and lower two cavities, one side of upper cavity is provided with the steam intake pipe, the opposite side sets up the same side of steam communicating pipe connection lower cavity, lower cavity and steam intake pipe homonymy are provided with the steam outlet duct, be provided with the flow distribution valve on the steam communicating pipe.
2. A full-jacketed vortex shedding flowmeter according to claim 1, wherein the polished rod is provided with cooling fins.
3. The full-jacketed vortex shedding flowmeter of claim 1, wherein the baffle is disposed in the center of the fluid conduit to divide the upper and lower chambers equally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610728864.4A CN106568486B (en) | 2016-08-26 | 2016-08-26 | Full jacket type vortex shedding flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610728864.4A CN106568486B (en) | 2016-08-26 | 2016-08-26 | Full jacket type vortex shedding flowmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106568486A CN106568486A (en) | 2017-04-19 |
| CN106568486B true CN106568486B (en) | 2023-08-29 |
Family
ID=58532302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610728864.4A Active CN106568486B (en) | 2016-08-26 | 2016-08-26 | Full jacket type vortex shedding flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106568486B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5679901A (en) * | 1991-10-08 | 1997-10-21 | Lew; Hyok Sang | Vortex sensing pressure transducer |
| CN101750119A (en) * | 2008-12-16 | 2010-06-23 | 北京航天峰光电子技术有限责任公司 | Vortex flow meter for deep cooling medium |
| CN103868558B (en) * | 2014-03-20 | 2017-01-04 | 迈瑞尔实验设备（上海）有限公司 | A kind of powder flow on-line detecting system and method |
| CN206208327U (en) * | 2016-08-26 | 2017-05-31 | 江苏伟屹电子有限公司 | A kind of full jacket type vortex-shedding meter |
-
2016
- 2016-08-26 CN CN201610728864.4A patent/CN106568486B/en active Active
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| Publication number | Publication date |
|---|---|
| CN106568486A (en) | 2017-04-19 |
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