CN202382776U - Ultra-small-caliber vortex shedding flowmeter - Google Patents
Ultra-small-caliber vortex shedding flowmeter Download PDFInfo
- Publication number
- CN202382776U CN202382776U CN2011203726430U CN201120372643U CN202382776U CN 202382776 U CN202382776 U CN 202382776U CN 2011203726430 U CN2011203726430 U CN 2011203726430U CN 201120372643 U CN201120372643 U CN 201120372643U CN 202382776 U CN202382776 U CN 202382776U
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- vortex shedding
- probe
- converter
- triangular prism
- vortex
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Abstract
The utility model relates to an ultra-small-caliber vortex shedding flowmeter which comprises a converter, a connecting rod, a detection assembly and vortex shedding guide tubes, wherein the converter is used for processing, displaying and telemetering a signal; the connecting rod is arranged at the lower part of the converter and is used for connecting the converter with the detection assembly; the detection assembly is used for detecting a flow signal; and the vortex shedding guide tubes are sleeved on two sides of the detection assembly and are connected with a process pipeline. Compared with the prior art, the ultra-small-caliber vortex shedding flowmeter disclosed by the utility model has the characteristics that a series of contradictions among an instrument structure, the volume of a detection element probe and the volume and the sensitivity of a triangular prism shredder due to small caliber of the instrument are overcome; an advanced process is adopted for piezoelectric crystal packaging in the probe, and thus the problems that processing and assembling are difficult to realize due to the contradictions among the instrument structure, the volume of the detection element probe and the volume and the sensitivity of the triangular prism shredder are solved, the accuracy and the repeatability of measurement are ensured and the minimum liquid flow of 50L/h or gas flow of 0.5m/h can be accurately measured, wherein the error is within +/-2 percent.
Description
Technical field
The utility model relates to field of flow detection, especially relates to a kind of extra small bore vortex shedding flow meter.
Background technology
At present domestic and international well-known flowmeter manufacturer can only produce the small-bore vortex shedding flow meter of DN15, and the utility model technological breakthrough instrument bore is more little, manufactures the big more contradiction of difficulty, produces extra small bore vortex shedding flow meter.Because at present domestic and international well-known flowmeter professional production producer can only produce the small-bore vortex shedding flow meter of DN15; Be used to measure low discharge; But along with science and technology and the continuous development of producing; Market is more and more again to the detection industry of tiny flow quantity, like fine chemistry industry, bio-pharmaceuticals, automobile interior with air flowmeter etc.All need the vortex shedding flow meter of bore, measure more small flow like DN10, DN8, DN6 less than DN15 (15mm).
The utility model content
The purpose of the utility model is exactly for the defective that overcomes above-mentioned prior art existence a kind of accuracy of measurement and extra small bore stress-type vortex street flowmeter of repeatability of having guaranteed to be provided.
The purpose of the utility model can realize through following technical scheme:
A kind of extra small bore vortex shedding flow meter, this flowmeter comprises
Converter: be used for signal Processing, demonstration and teletransmission;
Connecting rod: be located at the converter bottom, connect converter and detection components;
Detection components: appearance structure is a square, and the centre is a round tube, interior dress triangular prism generation body and stress-type probe, and mozzle is installed in both sides, is used to detect flow signal;
The vortex street mozzle: be set in the both sides of detection components, two end entrances are processed into circular contraction-like, can make vortex inner separation recycling more stable.
Described detection components comprises triangular prism generation body and stress-type probe; Appearance structure is a square; The centre is a round tube; Described triangular prism generation body is located in the assembly round tube, the vortex frequency that the downstream that described stress-type probe is located at triangular prism generation body produce after through triangular prism in order to test fluid.
The vortex signal that described triangular prism generation body produces not only strongly but also stable.
Described probe is the stress-type probe, has the advantages that sensitivity is higher, behavioral characteristics good, response speed is fast, long-time stability are good.
The probe detecting element that piezoelectric crystal technology is processed is set in the described probe, has the characteristic of solidifying element, solid and reliable.
The bore of described vortex street mozzle is 6mm, reaches 10mm, shrinks at entrance and outlet section, is tended towards stability in the flow field.
Compared with prior art; The utility model has solved because the instrument bore is little; A series of contradictions between volume, triangular prism generation body volume and the sensitivity of the instrument structure that is brought, detecting element probe; Advanced technology is adopted in the encapsulation of piezoelectric crystal in the probe, has solved the problem that is difficult to process assembling between volume, triangular prism generation body volume and the sensitivity of instrument structure, detecting element probe, has guaranteed degree of accuracy and the repeatability measured; Can accurately measure minimum liquid flow rate 50L/h or gas flow 0.5m/h, and be no more than ± 2% error.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 be among Fig. 1 A-A to structural representation.
Among the figure: 1 be converter, 2 for connecting rod, 3 for detection components, 31 for triangular prism generation body, 32 for stress-type probe, 4 be the vortex street mozzle.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment
A kind of extra small bore vortex shedding flow meter, its structure is as shown in Figure 1, and this flowmeter comprises converter 1, connecting rod 2, detection components 3, vortex street mozzle 4; Wherein, converter 1 is used for signal Processing, demonstration and teletransmission, and connecting rod 2 is located at the bottom of converter 1; Connect converter 1 and detection components 3; Detection components 3 is used to detect flow signal, and vortex street mozzle 4 is set in the both sides of detection components 3, and can be connected with process pipe.
The utility model is when being used for flow detection with metering, and detected fluid gets into vortex street mozzle 4, does coning in the entrance and exit end contraction of vortex street mozzle 4, and so well hydrodynamic noise is weakened in the balance flow field.Detected fluid gets into the health check-up of vortex street table and surveys in the assembly 3; Form vortex when flowing through triangular prism generation body; Its vortex frequency is detected by stress-type probe, and converts electric signal to and deliver in the converter 1, carries out intelligent signal Processing; And demonstration or delivery rate signal, connecting rod 2 is surveyed assembly 3 with converter 1 and the health check-up of vortex street table and is connected into a flow instrument.
The utility model the key technical indexes:
Class of accuracy: 2.0
Repeatability: 0.6%
Caliber series: DN6, DN10
Measuring media: liquid, gas, steam
Medium temperature :≤350 ℃
Pressure medium :≤4.0Mpa
Environment temperature :-20 ℃-+45 ℃
Flow range: liquid 0.5m/s-5.0m/s, gas 5.0m/s-50m/s.
Claims (4)
1. an extra small bore vortex shedding flow meter is characterized in that this flowmeter comprises
Converter: be used for signal Processing, demonstration and teletransmission;
Connecting rod: be located at the converter bottom, connect converter and detection components;
Detection components: appearance structure is a square, and the centre is a round tube, interior dress triangular prism generation body and stress-type probe, and mozzle is installed in both sides, is used to detect flow signal;
The vortex street mozzle: be set in the both sides of detection components, two end entrances are processed into the circular contraction-like structure that makes vortex inner separation recycling more stable.
2. a kind of extra small bore vortex shedding flow meter according to claim 1; It is characterized in that; Described detection components comprises triangular prism generation body and stress-type probe, and appearance structure is a square, and the centre is a round tube; Described triangular prism generation body is located in the assembly round tube, and described stress-type probe is located at the downstream of triangular prism generation body.
3. a kind of extra small bore vortex shedding flow meter according to claim 2 is characterized in that, described probe is the stress-type probe, and the probe detecting element that piezoelectric crystal technology is processed is set in the probe.
4. a kind of extra small bore vortex shedding flow meter according to claim 1 is characterized in that the bore of described vortex street mozzle is 6mm and 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203726430U CN202382776U (en) | 2011-09-30 | 2011-09-30 | Ultra-small-caliber vortex shedding flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203726430U CN202382776U (en) | 2011-09-30 | 2011-09-30 | Ultra-small-caliber vortex shedding flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202382776U true CN202382776U (en) | 2012-08-15 |
Family
ID=46631272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203726430U Expired - Fee Related CN202382776U (en) | 2011-09-30 | 2011-09-30 | Ultra-small-caliber vortex shedding flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202382776U (en) |
-
2011
- 2011-09-30 CN CN2011203726430U patent/CN202382776U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160202 Address after: Xie Chun Lu Huangdu town Jiading District Shanghai 201804 Lane 1300 No. 3 Patentee after: Shanghai Anjun Electronic Technology Co.,Ltd. Address before: 201804, Shanghai, Jiading District, Shanghai Yi Road, No. 1 C-787 Patentee before: Shanghai Anrui Automation Instrumentation Co., Ltd. |
|
| CP03 | Change of name, title or address |
Address after: 201805 zone a, No. 3, Lane 1300, xiechun Road, Anting Town, Jiading District, Shanghai Patentee after: Shanghai Jun Jun intelligent Polytron Technologies Inc Address before: Xie Chun Lu Huangdu town Jiading District Shanghai 201804 Lane 1300 No. 3 Patentee before: Shanghai Anjun Electronic Technology Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20200930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |