CN202033061U - Gas flow measuring apparatus - Google Patents
Gas flow measuring apparatus Download PDFInfo
- Publication number
- CN202033061U CN202033061U CN2010206554041U CN201020655404U CN202033061U CN 202033061 U CN202033061 U CN 202033061U CN 2010206554041 U CN2010206554041 U CN 2010206554041U CN 201020655404 U CN201020655404 U CN 201020655404U CN 202033061 U CN202033061 U CN 202033061U
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- gas
- gas flow
- pipeline
- pipe
- measurement device
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Abstract
The utility model belongs to the field of gas flow measuring and provides a gas flow measuring apparatus, comprising a gas flow sensor arranged at the outer side of a main gas pipeline, wherein there are provides a shunting air intake pipeline and a shunting air outtake pipeline between the main gas pipeline and the gas flow sensor, and the main gas pipeline is provided with a gas resistance regulator. The pipe diameter D channel of the shunting air intake pipeline and the shunting air outtake pipeline and the pipe diameter D pipeline of the main gas pipeline are proportional (different range, different proportion). When gas flows through the main gas pipeline, a portion of gas Q channel flows through the gas flow sensor via the shunting air intake pipeline, the gas flow flowing through the main gas pipeline is Q pipeline, and generally, it is satisfied that Q channel : Q pipeline = D channel : D pipeline, such that the gas flow flowing through the main gas pipeline is obtained by multiplying the gas flow data measured by the gas flow sensor with above proportion. The gas flow measuring apparatus provided by the utility model enables the measuring range to be extended.
Description
Technical field
The utility model belongs to the gas flow measurement field, particularly relates to a kind of gas flow measurement device.
Background technology
In the prior art, the sensor of measurement gas flow directly is arranged between the main channel of gas usually, the flow and the feedback data that are used for direct measurement gas, but, in practical operation, the flow of gas is not of uniform size, when gas flow is big, actual flow can takes place exceed the range of sensor and cause situation about can't measure.And during, gas-distributing channel measurement mechanism main when adopting, along with the flow of tested gas increases, gas-distributing channel can produce resistance, can lead, the gas-distributing channel flow proportional is unbalance and cause situation about can't measure.
The utility model content
In view of above defective, fundamental purpose of the present utility model is to provide a kind of gas flow measurement device, and this measurement mechanism is simple in structure, and measurable flow range enlarges and be stable.
In order to reach above purpose, this kind gas flow measurement device that the utility model provides, comprise that a gas flow sensor is arranged at the outside that the gas master threads a pipe, the gas master thread a pipe and gas flow sensor between be provided with the branch flow inlet port and distribute air flue, the airflow passes sensor that divides flow inlet port is got back to the gas master and is threaded a pipe from distributing air flue, wherein, described gas flow sensor is circumscribed with the display instrument that has the computing function module again, described minute flow inlet port and distribute the caliber D of air flue
The roadThe caliber D that threads a pipe with the gas master
PipeProportional, this ratio can require adjust with the variation of range, the aperture of threading a pipe such as the enlargement gas master.
Gas is when threading a pipe by the gas master, and a part of gas, is flowed out by distributing air flue through gas flow sensor then by the shunting inlet duct flow, and the gas flow of gas coming through flow sensor is Q
The road, the gas flow that the gas coming through master threads a pipe is Q
Pipe, generally, Q
The road: Q
Pipe=D
The road: D
Pipe, therefore, the gas flow data that gas flow sensor is recorded multiply by aforementioned proportion can obtain the gas flow of gas master in threading a pipe.Under the situation that the range of gas flow sensor is fixed, along with the increase of gas, by reducing D
The roadCan realize measuring, like this then enlarged the measurement range of gas flow measurement device integral body.
But, flow increase along with tested gas, gas-distributing channel can produce resistance, meeting be led, the gas-distributing channel flow proportional is unbalance and cause situation about can't measure, at this problem, and this kind gas flow measurement device that the utility model provides, comprise that also a dragulator is arranged on the gas master threads a pipe, increase the main airway gas-flow resistance, make when measuring big flow gas, master, the equilibrium of gas-distributing channel flow proportional, stablize.This dragulator is located at above-mentioned minute flow inlet port and is distributed between the air flue, and is located at its offside, and described dragulator is to be inserted in the pin of gas master in threading a pipe, and this pin is preferably cylindrical and the top is taper.
This kind gas flow measurement device that the utility model provides, mode by shunting, measure the gas flow of shunting by gas flow sensor, thereby calculate the gas flow that whole gas master threads a pipe, by adjusting the caliber D that divides flow inlet port and distribute air flue
The roadThe caliber D that threads a pipe with the gas master
PipeRatio value (promptly enlarging the aperture, main channel) is at gas flow sensor and branch flow inlet port and the caliber D that distributes air flue
The roadUnder the constant situation, can obtain any flow range (range) of measurement gas.And by described dragulator is set, reduced the error when flow is excessive, guaranteed measuring accuracy.
Description of drawings
Fig. 1 is a gas flow measurement apparatus structure synoptic diagram of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is further specified, but its qualification of not opposing:
As shown in Figure 1, this kind gas flow measurement device that the utility model provides, comprise that a gas flow sensor 20 is arranged at thread a pipe 10 the outside of gas master, the gas master thread a pipe 10 and gas flow sensor 20 between be provided with branch flow inlet port 101 and distribute air flue 102, wherein, described gas flow sensor 20 is circumscribed with the display instrument 201 that has the computing function module again, described minute flow inlet port and distribute the caliber D of air flue
The roadThe caliber D that threads a pipe with the gas master
PipeProportional (different range different proportion).
Gas is when threading a pipe by the gas master, and a part of gas, is flowed out by distributing air flue through gas flow sensor then by the shunting inlet duct flow, and the gas flow of gas coming through flow sensor is Q
The road, the gas flow that the gas coming through master threads a pipe is Q
Pipe, generally, Q
The road: Q
Pipe=D
The road: D
Pipe, therefore, the gas flow data that gas flow sensor is recorded multiply by aforementioned proportion can obtain the gas flow of gas master in threading a pipe.Under the situation that the range of gas flow sensor is fixed, along with the increase of gas, by reducing D
The roadCan realize measuring, like this then enlarged the measurement range of gas flow measurement device integral body.
The formula of air resistance is F=(1/2) C ρ SV
2, in the formula: C is a coefficient of air resistance, and ρ is an atmospheric density, and S is the object front face area, and V is the speed of related movement of object and air.By following formula as can be known, under the normal condition, the size of air resistance is directly proportional with coefficient of air resistance and front face area, is directly proportional with velocity squared.
When gas flow increases to a certain degree, D
The road: D
PipeAlso increase accordingly, when this ratio is excessive, can cause the unbalance of gas, influence the measuring accuracy of gas flow measurement device, at this problem, this kind gas flow measurement device that the utility model provides, comprise that also a dragulator 30 is arranged at the gas master and threads a pipe on 10, this dragulator 30 is located at above-mentioned minute flow inlet port 101 and is distributed optional position between the air flue 102, and be located at its offside for best, described dragulator 30 is for being inserted in the pin of gas master in threading a pipe, and this pin is preferably the thrust that can hinder the arbitrary shape that air communication crosses for the gas master on threading a pipe, for cylindrical and top are taper the best.
Below technology contents of the present utility model has been done detailed description.For persons skilled in the art, any conspicuous change of under the prerequisite that does not deviate from the utility model principle it being done can not exceed the protection domain of the application's claims.
Claims (7)
1. a gas flow measurement device is characterized in that, comprises that a gas flow sensor is arranged at the outside that the gas master threads a pipe, the gas master thread a pipe and gas flow sensor between be provided with the branch flow inlet port and distribute air flue.
2. gas flow measurement device according to claim 1 is characterized in that described gas flow sensor is circumscribed with the display instrument that has the computing function module again.
3. gas flow measurement device according to claim 1 is characterized in that, described minute flow inlet port and distribute the caliber D of air flue
The roadThe caliber D that threads a pipe with the gas master
PipeProportional.
4. gas flow measurement device according to claim 1 is characterized in that, comprises that also a dragulator is arranged on the gas master threads a pipe, and this dragulator is located at above-mentioned minute flow inlet port and is distributed between the air flue, and is located at its offside.
5. gas flow measurement device according to claim 4 is characterized in that, described dragulator is to be inserted in the pin of gas master in threading a pipe.
6. gas flow measurement device according to claim 5 is characterized in that, described pin can hinder the thrust that air communication is crossed for the gas master on threading a pipe.
7. gas flow measurement device according to claim 5 is characterized in that, described pin is cylindrical and its top is taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206554041U CN202033061U (en) | 2010-12-13 | 2010-12-13 | Gas flow measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206554041U CN202033061U (en) | 2010-12-13 | 2010-12-13 | Gas flow measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033061U true CN202033061U (en) | 2011-11-09 |
Family
ID=44895355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206554041U Expired - Fee Related CN202033061U (en) | 2010-12-13 | 2010-12-13 | Gas flow measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202033061U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204532A (en) * | 2014-06-18 | 2015-12-30 | 中国科学院大连化学物理研究所 | Gas flow control device for ion mobility spectrometry |
| CN105573353A (en) * | 2014-10-28 | 2016-05-11 | 中国科学院大连化学物理研究所 | Multi-path quantitative gas flow control device |
-
2010
- 2010-12-13 CN CN2010206554041U patent/CN202033061U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204532A (en) * | 2014-06-18 | 2015-12-30 | 中国科学院大连化学物理研究所 | Gas flow control device for ion mobility spectrometry |
| CN105573353A (en) * | 2014-10-28 | 2016-05-11 | 中国科学院大连化学物理研究所 | Multi-path quantitative gas flow control device |
| CN105573353B (en) * | 2014-10-28 | 2018-04-24 | 中国科学院大连化学物理研究所 | Multi-path quantitative gas volume control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20131213 |