CN2532455Y - Quality flow meter - Google Patents
Quality flow meter Download PDFInfo
- Publication number
- CN2532455Y CN2532455Y CN 02230415 CN02230415U CN2532455Y CN 2532455 Y CN2532455 Y CN 2532455Y CN 02230415 CN02230415 CN 02230415 CN 02230415 U CN02230415 U CN 02230415U CN 2532455 Y CN2532455 Y CN 2532455Y
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- China
- Prior art keywords
- differential pressure
- micro
- pressure transmitter
- probe
- flow
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- Expired - Fee Related
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Abstract
The utility model relates to a mass flowmeter, which is composed of a differential pressure transmitter, triplet valves, a flow measurement probe, a piezoelectric crystal probe and a micro-processor header, wherein, the differential pressure transmitter is connected with the micro-processor header; a vortex street transmitter is arranged on the micro-processor header; a micro-processor is arranged inside the micro-processor header; a differential pressure transmitter and the vortex street transmitter are respectively connected with the micro-processor; the lower end of the differential pressure transmitter is connected with the triplet valves; the lower end of the triplet valves is connected with the flow measurement probe; the lower end of the vortex street transmitter is connected with the piezoelectric crystal probe through wires. The utility model is simple in structure, and can simultaneously display two kinds of volume flow so that the two kinds of volume flow can show the advantages of each other and remedy defects of each other to improve the measurement accuracy, timely find out the problem by comparison with two kinds of figures, and carry out repairing accordingly. Two kinds of instantaneous volume flow, instantaneous mass flow, total mass flow and instantaneous densities of the measured medium can be simultaneously displayed with the measurement. Thus the measurement is high in price / performance ratio and easy to be repaired and maintained. As the utility model can work stably and reliably, the utility model can be widely used in the petrochemical production.
Description
(1) technical field
The utility model relates to the mass flowmeter of Media density under a kind of medium work condition state that is used for the interior mass of medium flow of measuring channel and can surveys.
(2) background technology
In industrial processes, flow is the parameter that needs often measurement and control.Continuous develop rapidly along with science and technology, people are also more and more higher to the requirement of flow accuracy of detection, and the flow kind that needs to detect also gets more and more, and detected object is from single-phase two-phase flow, the polyphasic flow of flowing to, and the industrial and mineral condition has high temperature, low temperature, high pressure and low pressure or the like.For this reason, people have more the physical property of different measuring object, use different physical principle and rule, design and manufacture various types of flow instruments.But, changeable for component, the material that pressure surge is big, desirable without comparison measurement scheme, currently used method roughly have three kinds: 1. mass-flow gas meter, 2. gas densitometer adds gas meter, 3 orifice plates and adds the indirect mass method of vortex shedding flow meter and measure.Above-mentioned the 1st, 2 kind of method instrument investment is all very big; The 3rd kind of method is then because the precision of orifice plate descends rapidly with the prolongation of service time, and this method is installed to waste time and energy, difficult in maintenance, accuracy is low, and range ratio has only 3: 1, can't mate with vortex flow sensors at all, carry out indirect mass method and measure.
(3) summary of the invention
The purpose of this utility model provides a kind of changeable for component, and the mass of medium flow detection that pressure surge is big is accurate, and Media density under the medium work condition state that can survey, mass flowmeter with low cost.
Solution of the present utility model for achieving the above object is: a kind of mass flowmeter, constitute by differential pressure transmitter, three valve groups, flow measurement probe, piezoelectric crystal probe and microprocessor gauge outfit etc., differential pressure transmitter is connected with the microprocessor gauge outfit, the microprocessor gauge outfit is provided with vortex transducer, be provided with microprocessor in the microprocessor gauge outfit, differential pressure transmitter is connected with microprocessor respectively with vortex transducer, the differential pressure transmitter lower end is connected with three valve groups, three valve group lower ends are connected with the flow measurement probe, and the vortex transducer lower end is connected with the piezoelectric crystal probe by lead.
The utility model is simple in structure, can show two kinds of volumetric flow rates simultaneously, make it to bring into play advantage separately, supply a gap mutually, thereby raising measuring accuracy, by two kinds of data relatively, can in time pinpoint the problems again, keep in repair targetedly, and this metering system can show the instant density of two kinds of instantaneous volume flow rates, instantaneous mass flow, accumulative total mass rate and measured medium simultaneously, is the higher metering method of a kind of cost performance, and it is easy to install, safeguard, reliable and stable operation can be widely used in the petrochemical iy produced.
(4) description of drawings
Fig. 1 is the structural representation of the new shape embodiment of this practicality:
Fig. 2 is the utility model embodiment user mode synoptic diagram:
(5) specific embodiments
As Fig. 1, shown in Figure 2, this differential pressure transmitter 1 is connected with microprocessor gauge outfit 10, microprocessor gauge outfit 10 is provided with vortex transducer 2, be provided with microprocessor in the microprocessor gauge outfit 10, differential pressure transmitter 1 is connected with microprocessor respectively with vortex transducer 2, differential pressure transmitter 1 lower end is connected with three valve groups 3, three valve groups, 3 lower ends are connected with flow measurement probe 4, flow measurement probe 4 is generation bodies of differential pressure and vortex street, the monolithic double cavity structure probe that it is made by stainless steel, its cross section can be adopted trapezoidal, shapes such as circle and diamond, carry out coarse processing in its anterior face, and having a plurality of pressure ports, vortex transducer 2 lower ends are connected with piezoelectric crystal probe 5 by lead.During use, flow measurement probe 4 and piezoelectric crystal probe 5 emit 8,9 and be welded to connect part 6 and be fixed in the pipeline 7 by pipe Luo, produce differential pressure and vortex street simultaneously by flow measurement probe 4, by many pressure port is spreaded all over the velocity profile of fluid in whole pipe 7, the pressure port of meeting to fluid reads the high pressure average signal, and the end pressure port of popping one's head in before 4 the burble point with flow measurement on the both sides, rear flank of flow measurement probe 4, fluid reads the low pressure average signal.To differential pressure transmitter 1, the process detection part is converted the variation of static capacity by three valve groups 3 for high pressure average signal and low pressure average signal, output and the linear 4～20mA current signal of detected signal after the transfer member conversion is amplified.Fluid forms whirlpool and alternately separates in the flow measurement both sides, 4 rear portion of popping one's head in, produce pressure fluctuation, be installed in the piezoelectric crystal probe 5 that flow measurement pops one's head in the 4 back wake flows and experience alternating force, be embedded in the piezoelectric crystal effect that the piezolectric crystal unit of 5 inside is subjected to alternating force of popping one's head in and produce the alternation electric charge, the alternation charge signal is exported with frequency signal after amplifier is handled after testing; 4～20mA current signal and frequency signal draw the mass rate of pipeline fluid and the Media density under the work condition state by microprocessor gauge outfit 10 through computing.
Claims (2)
1. mass flowmeter, by differential pressure transmitter, three valve groups, the flow measurement probe, formations such as piezoelectric crystal probe and microprocessor gauge outfit, it is characterized in that: differential pressure transmitter (1) is connected with microprocessor gauge outfit (10), microprocessor gauge outfit (10) is provided with vortex transducer (2), the microprocessor gauge outfit is provided with microprocessor in (10), differential pressure transmitter (1) is connected with microprocessor respectively with vortex transducer (2), differential pressure transmitter (1) lower end is connected with three valve groups (3), three valve group (3) lower ends are connected with flow measurement probe (4), and vortex transducer (2) lower end is connected with piezoelectric crystal probe (5) by lead.
2. a kind of mass flowmeter according to claim 1, it is characterized in that: flow measurement probe (4) is the generation body of differential pressure and vortex street, the monolithic double cavity structure probe that it is made by stainless steel, that its cross section can be adopted is trapezoidal, circle and diamond shape, carry out coarse processing in its anterior face, and have a plurality of pressure ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02230415 CN2532455Y (en) | 2002-03-27 | 2002-03-27 | Quality flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02230415 CN2532455Y (en) | 2002-03-27 | 2002-03-27 | Quality flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2532455Y true CN2532455Y (en) | 2003-01-22 |
Family
ID=33706422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02230415 Expired - Fee Related CN2532455Y (en) | 2002-03-27 | 2002-03-27 | Quality flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2532455Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279025A (en) * | 2011-06-30 | 2011-12-14 | 福建上润精密仪器有限公司 | Integrated gas mass flow meter for plug-in sensor integrated component |
| CN109341785A (en) * | 2018-11-29 | 2019-02-15 | 安徽金大仪器有限公司 | A kind of turbine flowmeter with fluid density measurement function |
-
2002
- 2002-03-27 CN CN 02230415 patent/CN2532455Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279025A (en) * | 2011-06-30 | 2011-12-14 | 福建上润精密仪器有限公司 | Integrated gas mass flow meter for plug-in sensor integrated component |
| CN102279025B (en) * | 2011-06-30 | 2013-02-20 | 福建上润精密仪器有限公司 | Integrated gas mass flow meter for plug-in sensor integrated component |
| CN109341785A (en) * | 2018-11-29 | 2019-02-15 | 安徽金大仪器有限公司 | A kind of turbine flowmeter with fluid density measurement function |
| CN109341785B (en) * | 2018-11-29 | 2024-02-13 | 安徽金大仪器有限公司 | Turbine flowmeter with fluid density measuring function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |