CN201653463U - VFP and VF employing same - Google Patents
VFP and VF employing same Download PDFInfo
- Publication number
- CN201653463U CN201653463U CN2010201717926U CN201020171792U CN201653463U CN 201653463 U CN201653463 U CN 201653463U CN 2010201717926 U CN2010201717926 U CN 2010201717926U CN 201020171792 U CN201020171792 U CN 201020171792U CN 201653463 U CN201653463 U CN 201653463U
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- sensing element
- flow meter
- vortex shedding
- tubular shell
- shedding flow
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Abstract
The utility model discloses a VFP (vortex flowmeter probe) and a VF (vortex flowmeter) employing the same, wherein the VFP comprises a tube-shaped casing with a fluid channel arranged therein; an external fluid medium channel communicated with the interior fluid channel of the tube-shaped casing is arranged on the tube-shaped casing; an inlet communicated with the exterior of the VF is formed at one end of the external fluid medium channel and an outlet communicated with the interior fluid channel of the tube-shaped casing is formed at the other end thereof, and the outlet of the external fluid medium channel in the fluid flow direction inside the interior fluid channel of the tube-shaped casing is positioned in the downstream position of an eddy generator; filter devices and a sensing element are arranged inside the external fluid medium channel from the inlet to the outlet. The filter devices connected and arranged on the casing of the sensing element can effectively avoid the influence of the bad workplace to the sensing element so as to prolong the service life of the sensing element; in addition, the adoption of the thermo sensitive element or pressure sensitive element can enlarge the application range of the utility model.
Description
Technical field
The utility model belongs to the vortex shedding flow meter fields of measurement that is used for the pipeline fluid flow measurement.
Background technology
In production practices, relate in the conveying of fluids such as gas, steam, flowmeter is a kind of instrument commonly used, and vortex shedding flow meter is a kind of flowmeter more advanced in the fluid measurement field, has highly sensitive, advantage such as the scope of application is wide, working stability, precision height, media general are good.
Be illustrated in figure 1 as a kind of vortex shedding flow meter probe used in the prior art, establish the tubular shell 1 of fluid passage in comprising, be installed with eddy generator 2 in the fluid passage, two through holes 3 that are arranged in the downstream position setting of eddy generator 2 on the shell wall of tubular shell 1 on fluid flow direction are connected with two diversion columns 4, the end of described two diversion columns 4 connects by a flow element body 5, these flow element main body 5 inside are provided with the sensing element 6 that is used to detect the whirlpool occurrence frequency, and this sensing element 6 is arranged between two diversion columns 4.Sensing element often adopts acoustic sensor.When measuring fluid flow, when fluid media (medium) flows in tubular shell, flow through behind the eddy generator, produce the whirlpool that alternately occurs in both sides, eddy generator rear (with respect to fluid flow direction), have the whirlpool side will produce low-pressure area this moment, make the fluid media (medium) in the tubular shell back and forth flow, record the frequency that whirlpool takes place by sensing element then, calculate the flow that obtains fluid media (medium) to be measured by measured frequency data process at last via two diversion columns.
But there is technological deficiency in above-mentioned this vortex shedding flow meter probe being applied to comprise when the more fluid media (medium) of impurity is measured the place, because treating fluid measured when measuring flows between two diversion columns back and forth, the impurity that treat fluid measured and comprised this moment will be attached on the sensing element, time one length will have influence on the measuring accuracy of sensing element, finally have influence on measurement result, and shortened the serviceable life of sensing element.If sensing element is selected acoustic sensor for use, when the higher fluid of measurement flow rate or in the bigger position of pipe vibration, acoustic sensor is subjected to the interference of extraneous noise easily, influences measuring accuracy.
Summary of the invention
The purpose of this utility model provides a kind of vortex shedding flow meter probe, this vortex shedding flow meter probe can be applied in treats to comprise in the fluid measured the more measurement place of impurity, it is not treated the influence of impurity in the fluid measured, can badly not influence the measurement result of vortex shedding flow meter because of measuring site surrounding; The utility model also provides a kind of vortex shedding flow meter that uses above-mentioned vortex shedding flow meter probe simultaneously.
A kind of technical scheme of vortex shedding flow meter probe is in the utility model: a kind of vortex shedding flow meter probe, establish the tubular shell of fluid passage in comprising, in the fluid passage, be provided with eddy generator, described tubular shell is provided with the extraneous fluid medium channel that is connected with the tubular shell internal fluid channels, the import of described extraneous fluid medium channel one end for being connected with the vortex shedding flow meter external world of living in, the outlet of the other end for being connected with described tubular shell internal fluid channels, be positioned at the downstream position of eddy generator on the fluid flow direction of the outlet of described extraneous fluid medium channel in the tubular shell internal fluid channels, in described extraneous fluid medium channel, be disposed with filtration unit to outlet from its import, sensing element.
Described extraneous fluid medium channel comprises and is located at the through hole that is connected with the tubular shell internal fluid channels on the described tubular shell shell wall, is installed in water conservancy diversion tubing string on the described tubular shell, crosses filter ruffle and be used to be connected the water conservancy diversion tubing string and the sensing element housing of filter ruffle excessively with the residing external world of vortex shedding flow meter is connected with described through hole is communicated with, described sensing element enclosure interior is at described water conservancy diversion tubing string and be installed with sensing element between the filter ruffle excessively, the described jacket wall of crossing filter ruffle is provided with through hole, and the described filter ruffle inside of crossing is provided with filter core.
Described sensing element is a thermal sensing element.
Described eddy generator is provided with flow deflector away from a side of described water conservancy diversion tubing string.
Described flow deflector is " 1 " font or " ten " font or " rice " font.
In the utility model, when fluid is flowed through tubular shell through behind the eddy generator whirlpool low-pressure area appears, the fluid media (medium) that impurity is contained in the vortex shedding flow meter external world of living in enters extraneous fluid medium channel under pressure, extraneous fluid media (medium) is measured the frequency that whirlpool takes place in the tubular shell by sensing element at last acting on the sensing element after the device filtration after filtration.Filtration unit is set in extraneous fluid medium channel can effectively avoids abominable workplace, guaranteed the measuring accuracy of sensing element, prolonged the serviceable life of sensing element the influence that sensing element caused.
The filter ruffle that was connected on the sensing element housing is crossed filter ruffle inside filter core is set, and it is simple and practical, and cross filter ruffle and filter core can outsourcing, so just reduced production cost.
Its noise that is produced when selecting for use thermal sensing element can avoid effectively when rate of flow of fluid as sensing element that too high or pipe vibration is big guarantees the measuring accuracy of sensing element, and can further enlarge the scope of application of the present utility model.
Further, in the utility model, flow deflector is set and makes and treat that fluid measured is tending towards evenly at the each point flow velocity of pipe interior, eliminate the section of tubing air turbulence, improve and measure quality the inhomogeneous influence that causes of vortex arising at the eddy generator upstream position.
A kind of technical scheme of vortex shedding flow meter is in the utility model: a kind of vortex shedding flow meter, comprise vortex shedding flow meter probe and be connected signal output apparatus on the described vortex shedding flow meter probe, in comprising, establishes described vortex shedding flow meter probe the tubular shell of fluid passage, in the fluid passage, be provided with eddy generator, described tubular shell is provided with the extraneous fluid medium channel that is connected with the tubular shell internal fluid channels, the import of described extraneous fluid medium channel one end for being connected with the vortex shedding flow meter external world of living in, the outlet of the other end for being connected with described tubular shell internal fluid channels, be positioned at the downstream position of eddy generator on the fluid flow direction of the outlet of described extraneous fluid medium channel in the tubular shell internal fluid channels, in described extraneous fluid medium channel, be disposed with filtration unit to outlet from its import, sensing element.
Described extraneous fluid medium channel comprises and is located at the through hole that is connected with the tubular shell internal fluid channels on the described tubular shell shell wall, is installed in water conservancy diversion tubing string on the described tubular shell, crosses filter ruffle and be used to be connected the water conservancy diversion tubing string and the sensing element housing of filter ruffle excessively with the residing external world of vortex shedding flow meter is connected with described through hole is communicated with, described sensing element enclosure interior is at described water conservancy diversion tubing string and be installed with sensing element between the filter ruffle excessively, the described jacket wall of crossing filter ruffle is provided with through hole, and the described filter ruffle inside of crossing is provided with filter core.
Described sensing element is a thermal sensing element.
Described eddy generator is provided with flow deflector away from a side of described water conservancy diversion tubing string.
Described flow deflector is " 1 " font or " ten " font or " rice " font.
By adopting filtration unit to eliminate that impurity has guaranteed measuring accuracy to the influence of sensing element in the environment in the vortex shedding flow meter external world of living in, prolonged the serviceable life of sensing element in the utility model vortex shedding flow meter.
Description of drawings
Fig. 1 is the structural representation of vortex shedding flow meter probe in the prior art;
Fig. 2 is the structural representation of vortex shedding flow meter in the utility model;
Fig. 3 is the structural representation (arrow is depicted as fluid flow direction in the tubular shell) of vortex shedding flow meter probe in the utility model;
Fig. 4 is the left side view of Fig. 3.
Embodiment
As shown in Figure 3, Figure 4, a kind of vortex shedding flow meter probe, establish the tubular shell 21 of fluid passage in comprising, in the fluid passage, be provided with the eddy generator 22 that is installed on the tubular shell 21, be provided with flow deflector 31 in the side upstream (with respect to fluid flow direction) away from water conservancy diversion tubing string 24 of eddy generator 22.The shell wall of the tubular shell 21 of the downstream position on the fluid flow direction in the eddy generator 22 tubular shell internal fluid channels is provided with extraneous fluid medium channel, this external world's fluid medium channel comprises the through hole 23 that is arranged on tubular shell 21 shell walls, what be communicated with through hole 23 is installed in water conservancy diversion tubing string 24 on the tubular shell 21, sensing element housing 25 that sets firmly in water conservancy diversion tubing string 24 upper ends and the filter ruffle 27 excessively that on sensing element housing 25, is connected, water conservancy diversion tubing string 24 is connected by the fluid passage of through hole 23 with tubular shell 21 inside, between water conservancy diversion tubing string 24 and tubular shell 21, be provided with the sealant 29 that becomes with the epoxy resin can, be fixed with filter ruffle 27 on this sensing element housing 25, cross filter ruffle 27 and be provided with and be used for the through hole 30 that extraneous fluid entered filter ruffle inside, be provided with filter core 28 in the inside of crossing filter ruffle 27; Be provided with thermal sensing element 26 in sensing element housing 25, this thermal sensing element 26 was arranged between filter ruffle 27 and the water conservancy diversion tubing string 24.
What the eddy generator 22 in the foregoing description adopted is triangular prism, in the specific implementation, can adopt the non-linear bluff body of other shapes, such as trapezoidal etc.
During concrete enforcement, extraneous fluid medium channel in the foregoing description also can adopt integrated passage, from passage and the extraneous import that is connected to its outlet that is connected with the tubular shell internal fluid channels, be disposed with filtration unit, sensing element can adopt in the conduit wall perforate or connects the signal derivation of method such as lead with output that sensing element is responded in by passage.
During concrete enforcement, sensing element also can adopt other sensing elements such as voltage sensitive sensor.
As shown in Figure 2, a kind of vortex shedding flow meter comprises above-mentioned vortex shedding flow meter probe 11 as shown in Figure 3, Figure 4, is installed with instrument display panel 12 as signal output apparatus in vortex shedding flow meter 11 upper ends of popping one's head in by connecting link 13.
During concrete enforcement, be provided with the sealant with the epoxy resin embedding between vortex shedding flow meter probe 11 and connecting link 13, extraneous fluid media (medium) can not rise along sensing element 26 and enter into connecting link 13 when guaranteeing to measure.
During concrete the measurement,, on instrument realization dish 12, read corresponding measurement gained data and get final product vortex shedding flow meter probe 11 fluid line to be measured of packing into.
During use, treat that fluid measured flows in the internal fluid channels of tubular shell, when flowing through eddy generator 22, low pressure whirlpool district appears at eddy generator 22 rears (with respect to fluid flow direction), extraneous fluid media (medium) is inhaled in the water conservancy diversion tubing string 24 under pressure behind filter element filtering, it cools off thermal sensing element when extraneous fluid passes through thermal sensing element 26, make the resistance of thermal sensing element change, produce electric pulse on the resistance of thermal sensing element, show via the instrument display panel at last by a series of amplification filtering circuits, thereby realize final testing goal.
Claims (10)
1. a vortex shedding flow meter is popped one's head in, establish the tubular shell of fluid passage in comprising, in the fluid passage, be provided with eddy generator, it is characterized in that: described tubular shell is provided with the extraneous fluid medium channel that is connected with the tubular shell internal fluid channels, the import of described extraneous fluid medium channel one end for being connected with the vortex shedding flow meter external world of living in, the outlet of the other end for being connected with described tubular shell internal fluid channels, be positioned at the downstream position of eddy generator on the fluid flow direction of the outlet of described extraneous fluid medium channel in the tubular shell internal fluid channels, in described extraneous fluid medium channel, be disposed with filtration unit to outlet from its import, sensing element.
2. vortex shedding flow meter probe according to claim 1, it is characterized in that: described extraneous fluid medium channel comprises and is located at the through hole that is connected with the tubular shell internal fluid channels on the described tubular shell shell wall, what be communicated with described through hole is installed in water conservancy diversion tubing string on the described tubular shell, cross filter ruffle and be used to be connected the water conservancy diversion tubing string and the sensing element housing of mistake filter ruffle with the residing external world of vortex shedding flow meter is connected, described sensing element enclosure interior is at described water conservancy diversion tubing string and be installed with sensing element between the filter ruffle excessively, the described jacket wall of crossing filter ruffle is provided with through hole, and the described filter ruffle inside of crossing is provided with filter core.
3. vortex shedding flow meter probe according to claim 2, it is characterized in that: described sensing element is a thermal sensing element.
4. according to claim 2 or 3 described vortex shedding flow meter probes, it is characterized in that: described eddy generator is provided with flow deflector away from a side of described water conservancy diversion tubing string.
5. vortex shedding flow meter probe according to claim 4 is characterized in that: described flow deflector is " 1 " font or " ten " font or " rice " font.
6. vortex shedding flow meter, comprise vortex shedding flow meter probe and be connected signal output apparatus on the described vortex shedding flow meter probe, in comprising, establishes described vortex shedding flow meter probe the tubular shell of fluid passage, in the fluid passage, be provided with eddy generator, it is characterized in that: described tubular shell is provided with the extraneous fluid medium channel that is connected with the tubular shell internal fluid channels, the import of described extraneous fluid medium channel one end for being connected with the vortex shedding flow meter external world of living in, the outlet of the other end for being connected with described tubular shell internal fluid channels, be positioned at the downstream position of eddy generator on the fluid flow direction of the outlet of described extraneous fluid medium channel in the tubular shell internal fluid channels, in described extraneous fluid medium channel, be disposed with filtration unit to outlet from its import, sensing element.
7. vortex shedding flow meter according to claim 6, it is characterized in that: described extraneous fluid medium channel comprises and is located at the through hole that is connected with the tubular shell internal fluid channels on the described tubular shell shell wall, what be communicated with described through hole is installed in water conservancy diversion tubing string on the described tubular shell, cross filter ruffle and be used to be connected the water conservancy diversion tubing string and the sensing element housing of mistake filter ruffle with the residing external world of vortex shedding flow meter is connected, described sensing element enclosure interior is at described water conservancy diversion tubing string and be installed with sensing element between the filter ruffle excessively, the described jacket wall of crossing filter ruffle is provided with through hole, and the described filter ruffle inside of crossing is provided with filter core.
8. vortex shedding flow meter according to claim 7 is characterized in that: described sensing element is a thermal sensing element.
9. according to claim 7 or 8 described vortex shedding flow meters, it is characterized in that: described eddy generator is provided with flow deflector away from a side of described water conservancy diversion tubing string.
10. vortex shedding flow meter according to claim 9 is characterized in that: described flow deflector is " 1 " font or " ten " font or " rice " font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201717926U CN201653463U (en) | 2010-04-27 | 2010-04-27 | VFP and VF employing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201717926U CN201653463U (en) | 2010-04-27 | 2010-04-27 | VFP and VF employing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201653463U true CN201653463U (en) | 2010-11-24 |
Family
ID=43118705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201717926U Expired - Lifetime CN201653463U (en) | 2010-04-27 | 2010-04-27 | VFP and VF employing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201653463U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819051A (en) * | 2010-04-27 | 2010-09-01 | 郑州市光力科技发展有限公司 | Vortex street flowmeter probe and vortex street flowmeter using probe |
-
2010
- 2010-04-27 CN CN2010201717926U patent/CN201653463U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819051A (en) * | 2010-04-27 | 2010-09-01 | 郑州市光力科技发展有限公司 | Vortex street flowmeter probe and vortex street flowmeter using probe |
| CN101819051B (en) * | 2010-04-27 | 2012-05-30 | 郑州光力科技股份有限公司 | Vortex street flowmeter probe and vortex street flowmeter using probe |
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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: ZHENGZHOU GL TECH COMPANY Free format text: FORMER NAME: GUANGLI SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD., ZHENGZHOU |
|
| CP03 | Change of name, title or address |
Address after: 450001, 10, Gao Chun Road, Zhengzhou hi tech Development Zone, Henan, China Patentee after: Zhengzhou GL Tech Company Address before: 450001, No. 10, Chun Yang Road, hi tech, Henan, Zhengzhou Patentee before: Guangli Science & Technology Development Co., Ltd., Zhengzhou |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 450001 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 10 Patentee after: Power Polytron Technologies Inc Address before: 450001, 10, Gao Chun Road, Zhengzhou hi tech Development Zone, Henan, China Patentee before: Zhengzhou GL Tech Company |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |