CN201811761U - Vortex shedding flow meter - Google Patents
Vortex shedding flow meter Download PDFInfo
- Publication number
- CN201811761U CN201811761U CN2010205500171U CN201020550017U CN201811761U CN 201811761 U CN201811761 U CN 201811761U CN 2010205500171 U CN2010205500171 U CN 2010205500171U CN 201020550017 U CN201020550017 U CN 201020550017U CN 201811761 U CN201811761 U CN 201811761U
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- CN
- China
- Prior art keywords
- vortex
- detection body
- vortex detection
- flow meter
- platen
- 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
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Abstract
The utility model discloses a vortex shedding flow meter, which comprises an installation pipe section, wherein a vortex detection body is arranged on the installation pipe section; the signal output end of the vortex detection body is electrically connected with a transducer; the lower part of the transducer is fixedly connected with a transducer support rod; a base which is arranged at the upper end of the installation pipe section in a matching way is fixed at the lower end of the transducer support rod; a pressure plate is arranged between the base and the installation pipe section; the middle part of the pressure plate is provided with a through hole which is matched with the vortex detection body; the side part of the pressure plate is provided with a flood relief channel which communicates the vortex detection body with the outside; and the bottom surface of the pressure plate is provided with an installation groove which is hermetically clamped with the installation part of the vortex detection body. The vortex shedding flow meter which adopts the structure has reasonable structure, is convenient to use, can prevent a pipeline medium from flowing into the transducer, is suitable for various medium flow detection occasions and contributes to prolonging of the service life.
Description
Technical field
The utility model relates to a kind of vortex shedding flow meter.
Background technology
In fluid, vertical and flow direction, insert a non-streamline shape object, as the vortex detection body, the back of vortex detection body produces the vibratory movement of a rule in certain reynolds number range, promptly will produce two row whirlpools in vortex detection body both sides, and direction is opposite, replace the whirlpool that occurs, the parallel whirlpool row of these two row are called Karman vortex street.Vortex shedding flow meter is a kind of flow measurement instrument of movement-less part, and it is to react flow velocity by the whirlpool frequency of measuring barrier downstream in the stream, thereby reaches the purpose of measuring flow.Vortex shedding flow meter is mainly used in the flow measurement of industrial pipeline medium fluid, as multiple media such as gas, liquid, steams.Be characterized in that the pressure loss is little, range ability is big, and the precision height is subjected to fluid density, pressure, temperature, viscosity is isoparametric influences hardly when measuring the operating mode volumetric flow rate.The tradition vortex shedding flow meter generally comprises one pipeline section is installed, install on the pipeline section vortex detection body is installed, the signal output part of vortex detection body is electrically connected with transmitter, and the transmitter bottom is connected with transmitter pole, and transmitter pole lower end is fixed with and the base that the installation of pipeline section upper end cooperates is installed.The tradition vortex shedding flow meter in use because the seal problem of aging, cause installing pipeline section the part of vortex detection body is installed can be poorly sealed, like this, medium in the pipeline can flow in the transmitter pole by the slit is installed, and finally enters in the transmitter, and causing transmitter to be corroded can't use.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of rational in infrastructure, easy to use at above-mentioned deficiency, and can prevent that pipeline medium from flowing into the vortex shedding flow meter in the transmitter.
For solving the problems of the technologies described above, this vortex shedding flow meter comprises that is installed a pipeline section, install on the pipeline section vortex detection body is installed, the signal output part of vortex detection body is electrically connected with transmitter, the transmitter bottom is connected with transmitter pole, transmitter pole lower end is fixed with and the base that the installation of pipeline section upper end cooperates is installed, its design feature is: also be provided with platen between base and the installation pipeline section, the platen middle part is provided with the via hole that cooperates with the vortex detection body, and the platen sidepiece is provided with the dredging flow groove that the vortex detection body is in communication with the outside.
The vortex shedding flow meter of this structure realizes preventing that by bottom earial drainage structure pipeline medium from flowing in the transmitter.
Bottom earial drainage structure mainly comprises the platen that is arranged between base and the installation pipeline section, and the platen middle part is provided with via hole, and via hole connects the platen upper and lower end face, and vortex detection body upper end is inserted in the via hole.The platen sidepiece is provided with dredging flow groove, and dredging flow groove is inner to contact with the vortex detection surface.When mounted, the platen lower seal is fitted in the vortex detection body clamps portion top, and the base of transmitter pole is fitted in the platen upper surface, like this, when the vortex detection body sealing problem occurs with the hermetic unit that pipeline section is installed, medium will flow along the vortex detection surface in body in the body.Because vortex detection body upper surface and platen lower surface sealing crimping, and be provided with the dredging flow groove that the vortex detection surface is in communication with the outside on the platen, therefore, when medium flows along the vortex detection surface, medium will flow to the vortex shedding flow meter outside along dredging flow groove, and can not flow in the transmitter by vortex detection body and platen convergence part, ensured the safe and stable operation of transmitter.
As improvement, the platen bottom surface is provided with the mounting groove that engages with the sealing of vortex detection body installation portion.
In the platen bottom surface mounting groove is set, the EDDY CURRENT body can be clamped in the mounting groove, help being tightly connected of platen bottom surface and EDDY CURRENT body top.
As a kind of implementation, described dredging flow groove cross-sectional area is a rectangle, and its quantity is three.
Dredging flow groove quantity is set to three, can guarantee can flow out from dredging flow groove when medium is revealed more unobstructedly, can effectively avoid MEDIA FLOW to transmitter.
In sum, adopt the vortex shedding flow meter of this structure, rational in infrastructure, easy to use, and can prevent that pipeline medium from flowing in the transmitter, the occasion that is adapted at various detection rate-of flows is used the serviceable life that helps to improve vortex shedding flow meter.
Description of drawings
In conjunction with the accompanying drawings the utility model is described in further details:
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1 for installing pipeline section, and 2 is the vortex detection body, and 3 is transmitter, and 4 is transmitter pole, and 5 is base, and 6 is platen, and 7 is via hole, and 8 is dredging flow groove, and 9 is double-screw bolt, and 10 is mounting groove.
Embodiment
As shown in Figure 1; this vortex shedding flow meter comprises that is installed a pipeline section 1; this installation pipeline section 1 is one section round tube; pipeline section 1 top is installed is provided with mounting hole; sealing is fitted with vortex detection body 2 in the mounting hole; vortex detection body 2 bottoms extend to installs in the pipeline section 1, installs in the pipeline section 1 and also is installed with the eddy generator that is sleeved on the vortex detection external body, so just vortex detection body 2 is played a very good protection.Vortex detection body 2 tops are provided with platen 6, platen 6 middle parts are provided with the via hole 7 on suit vortex detection body 2 tops, vortex detection body 2 lower surfaces are provided with the mounting groove 10 corresponding with vortex detection body 2 positions, and vortex detection body 2 upper outside sealed cards are contained in the mounting groove 10.Platen 6 bottoms are provided with dredging flow groove 8, and described dredging flow groove 8 cross-sectional areas are rectangle, and its quantity is three.Dredging flow groove 8 the inners are communicated with mounting groove 10, and dredging flow groove 8 outer ends are communicated with ambient atmosphere.Platen 6 tops are provided with transmitter 3 by transmitter pole 4, and the signal output part of vortex detection body 2 is electrically connected with transmitter 3 signal input parts by signal wire 11, and signal wire 11 is arranged in the transmitter pole 4.Transmitter pole 4 bottoms are installed with base 5, and base 5 is corresponding with platen 6 positions, and base 5, platen 6 and installation pipeline section 1 are fixedly installed togather by double-screw bolt 9.
Claims (3)
1. vortex shedding flow meter, comprise that is installed a pipeline section (1), install on the pipeline section (1) vortex detection body (2) is installed, the signal output part of vortex detection body (2) is electrically connected with transmitter (3), transmitter (3) bottom is connected with transmitter pole (4), transmitter pole (4) lower end is fixed with and the base (5) that the installation of pipeline section (1) upper end cooperates is installed, it is characterized in that: also be provided with platen (6) between base (5) and the installation pipeline section (1), platen (6) middle part is provided with the via hole (7) that cooperates with vortex detection body (2), and platen (6) sidepiece is provided with the dredging flow groove (8) that vortex detection body (2) is in communication with the outside.
2. vortex shedding flow meter as claimed in claim 1 is characterized in that: platen (6) bottom surface is provided with the mounting groove (10) that engages with the sealing of vortex detection body (2) installation portion.
3. vortex shedding flow meter as claimed in claim 1 or 2 is characterized in that: described dredging flow groove (8) cross-sectional area is a rectangle, and its quantity is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205500171U CN201811761U (en) | 2010-09-30 | 2010-09-30 | Vortex shedding flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205500171U CN201811761U (en) | 2010-09-30 | 2010-09-30 | Vortex shedding flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201811761U true CN201811761U (en) | 2011-04-27 |
Family
ID=43894701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205500171U Expired - Lifetime CN201811761U (en) | 2010-09-30 | 2010-09-30 | Vortex shedding flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201811761U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375813A (en) * | 2019-07-18 | 2019-10-25 | 中国石油天然气股份有限公司 | A kind of integrated transducer and measurement method measuring fluid temperature (F.T.) and vortex frequency |
-
2010
- 2010-09-30 CN CN2010205500171U patent/CN201811761U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375813A (en) * | 2019-07-18 | 2019-10-25 | 中国石油天然气股份有限公司 | A kind of integrated transducer and measurement method measuring fluid temperature (F.T.) and vortex frequency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110427 |
|
| CX01 | Expiry of patent term |