CN205748516U - Micro-nano upgrading fluid flowmeter - Google Patents
Micro-nano upgrading fluid flowmeter Download PDFInfo
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- CN205748516U CN205748516U CN201620445667.7U CN201620445667U CN205748516U CN 205748516 U CN205748516 U CN 205748516U CN 201620445667 U CN201620445667 U CN 201620445667U CN 205748516 U CN205748516 U CN 205748516U
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Abstract
The open a kind of integration degree of this utility model is high, the micro-nano upgrading fluid flowmeter of micro-nano upgrading transient liquid flow can be measured in real time, it is provided with flow transducer, the output signal of flow transducer connects with single-chip microcomputer, memory element also it is connected to single-chip microcomputer, DLL and data output interface, it is characterized in that: described flow transducer is provided with straight tube (1), it is provided with heater (2) in the center of straight tube (1), import at straight tube (1) is provided with upstream temperature sensor (3), outlet at straight tube (1) is provided with downstream temperature sensor (4), described heater (2), the output signal of upstream temperature sensor (3) and downstream temperature sensor (4) connects with single-chip microcomputer.
Description
Technical field
This utility model belongs to field of liquid flow measurement, and especially a kind of integration degree is high, can measure the micro-nano upgrading fluid flowmeter of micro-nano upgrading transient liquid flow in real time.
Background technology
Conventional liquid flow measuring method has gravimetric method, volumetric method and pressure differential method.Gravimetric method is to calculate fluid flow by measuring the mass change in liquid in container certain time, but as extremely low in fluid flow (micro-nano upgrading), weight changes the least, is just difficult to record accurate flow.Chinese Patent Application No. be 200710041371.4 patent of invention disclose " a kind of fluid micro-flux measuring method ", be by measuring liquid distance of movement in the microchannel of known dimensions in certain time, being calculated flow value (volumetric method).Distance in order to allow micro-nano liquid move easily is observed, and general employing capillary tube is as measurement microchannel, but the internal diameter size of capillary tube often exists deviation, and the flow value calculated also can exist deviation.Gravimetric method and volumetric method the most all can only measure the average discharge of liquid, it is impossible to measure instantaneous delivery during liquid flowing in real time.Pressure reduction rule is to allow liquid flow through one section of pipeline, by measuring the pressure difference of pipeline gateway, calculates the flow of liquid according to Bernoulli equation.Although being obtained in that the instantaneous delivery of liquid, but under micro-nano flow, pressure difference being the least, the most also it is difficult to measure precisely.
Summary of the invention
This utility model is for the above-mentioned technical problem existing for prior art, it is provided that a kind of integration degree is high, can measure the micro-nano upgrading fluid flowmeter of micro-nano upgrading transient liquid flow in real time.
Technical solution of the present utility model is: a kind of micro-nano upgrading fluid flowmeter, it is provided with flow transducer, the output signal of flow transducer connects with single-chip microcomputer, memory element, DLL and data output interface also it is connected to single-chip microcomputer, described flow transducer is provided with straight tube, it is provided with heater in the center of straight tube, import at straight tube is provided with upstream temperature sensor, outlet at straight tube is provided with downstream temperature sensor, and the output signal of described heater, upstream temperature sensor and downstream temperature sensor connects with single-chip microcomputer.
This utility model is provided with the sensor indirectly measuring fluid flow based on temperature differential method principle, the upstream liquid of collection and the temperature signal of downstream liquid is sent to single-chip microcomputer and carries out data process, obtains flow value, then is sent to computer by data transmission interface.Can quickly, in real time, continuously, accurately measure micro-nano upgrading fluid flow, integration degree is high, and volume is little, it is simple to carries and uses.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment.
Fig. 2 is the circuit theory diagrams of this utility model embodiment.
Detailed description of the invention
Such as Fig. 1, shown in Fig. 2: this utility model embodiment is same as the prior art, it is provided with flow transducer, the output signal of flow transducer connects with single-chip microcomputer, memory element also it is connected to single-chip microcomputer, DLL and data output interface, with prior art except that described flow transducer is provided with straight tube 1, it is provided with heater 2 in the center of straight tube 1, import at straight tube 1 is provided with upstream temperature sensor 3, outlet at straight tube 1 is provided with downstream temperature sensor 4, described heater 2, the output signal of upstream temperature sensor 3 and downstream temperature sensor 4 connects with single-chip microcomputer.
Operation principle:
The liquid flowing through straight tube 1 is heated by Single-chip Controlling heater 2, and upstream temperature sensor and downstream temperature sensor measure the temperature at hot spot upstream and downstream simultaneously, calculates measured temperature difference, thus obtains fluid flow information.
Claims (1)
1. a micro-nano upgrading fluid flowmeter, it is provided with flow transducer, the output signal of flow transducer connects with single-chip microcomputer, memory element also it is connected to single-chip microcomputer, DLL and data output interface, it is characterized in that: described flow transducer is provided with straight tube (1), it is provided with heater (2) in the center of straight tube (1), import at straight tube (1) is provided with upstream temperature sensor (3), outlet at straight tube (1) is provided with downstream temperature sensor (4), described heater (2), the output signal of upstream temperature sensor (3) and downstream temperature sensor (4) connects with single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620445667.7U CN205748516U (en) | 2016-05-17 | 2016-05-17 | Micro-nano upgrading fluid flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620445667.7U CN205748516U (en) | 2016-05-17 | 2016-05-17 | Micro-nano upgrading fluid flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205748516U true CN205748516U (en) | 2016-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620445667.7U Active CN205748516U (en) | 2016-05-17 | 2016-05-17 | Micro-nano upgrading fluid flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205748516U (en) |
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2016
- 2016-05-17 CN CN201620445667.7U patent/CN205748516U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |