CN1395082A - Gas laminar flow rate sensor - Google Patents
Gas laminar flow rate sensor Download PDFInfo
- Publication number
- CN1395082A CN1395082A CN 02128947 CN02128947A CN1395082A CN 1395082 A CN1395082 A CN 1395082A CN 02128947 CN02128947 CN 02128947 CN 02128947 A CN02128947 A CN 02128947A CN 1395082 A CN1395082 A CN 1395082A
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- China
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- laminar flow
- rate sensor
- flow rate
- gas
- caliber
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Abstract
The flow sensor of the gas laminar flow belongs to the metering device category. The device body is set up as the pipe diameter type or the reducing pipe type. The two apertures for taking press are located on the middle part of the pipe. There is the laminar flow element between the two apertures in the pipe. The flow straightener is installed on the exterior of the apertures in the pipe. The connection screw threads or flanges are set up at the mouths of the two ends of the device body. With the invented flow sensor of the gas laminar flow being installed, the gas flow passing through the pipe is still quite stable so as to increase the precision for measuring the gas flow.
Description
Technical field
The invention belongs to the measurement mechanism class, relate in particular to the flow measurement device of gas.
Background technology
At present, in commercial production, need often the flow of gas is detected.The flowmeter of employing throttle type, or area formula usually, positive displacement detects.Detecting needs to dispose some utility appliance often, thereby testing cost is higher.In addition, in measuring process, in the gas laminar flow zone, the coefficient of flow rather unstable of orifice plate, Venturi tube and flow nozzle, thereby bring difficulty to measurement, and accuracy of detection is difficult to improve.
Summary of the invention
The purpose of this invention is to provide a kind of gas laminar flow rate sensor, solve an above-mentioned difficult problem, measure convenient, as to improve accuracy of detection needs, be particularly suitable for the measurement of low discharge to satisfy.
The object of the present invention is achieved like this: its body of gas laminar flow rate sensor is set to the caliber formula, caliber place, middle part is provided with two pressure ports, be provided with laminar flow element between two pressure ports in the caliber, the outside of two pressure ports is respectively arranged with rectifier in the caliber, and the mouth of pipe at body two ends is provided with connecting thread or ring flange.
Because the present invention has adopted above technical scheme, thereby has following advantage:
1, install gas laminar flow rate sensor of the present invention after, the gas flow quite stable of the pipeline of flowing through, thereby improved the accuracy of detection of gas flow.
2, unitary construction is simple, and is easy to manufacture, easy for installation.
Description of drawings
Fig. 1 is the type shape structural representation of a kind of gas laminar flow rate sensor of the present invention;
Fig. 2 is the type shape structural representation of another kind of gas laminar flow rate sensor of the present invention;
Fig. 3 is the rectifier among the present invention, the writing board shape structural representation in the laminar flow element;
Fig. 4 is the rectifier among the present invention, the corrugated plate flat shape structural representation in the laminar flow element;
Fig. 5 is the rectifier among the present invention, the method for making synoptic diagram of laminar flow element.
Among the figure:
1, body 2, pressure port 3, laminar flow element 4, rectifier 5, ring flange
Embodiment
Below in conjunction with accompanying drawing enforcement of the present invention is done as detailed below:
In Fig. 1, gas laminar flow rate sensor, its body 1 is set to the caliber formula, and the two ends of body 1 are provided with mounting flange 5 (or screw thread), are respectively input, the output terminals of measurement gas; Caliber place, middle part is provided with two pressure ports 2, and pressure port 2 is used to measure the pressure reduction at laminar flow element 3 two ends.The internal diameter of pressure port 2 is provided with connecting thread, is convenient to the device tensimeter or connects the pressure measurement pipeline.The outside that is provided with 3, two pressure ports 2 of laminar flow element between two pressure ports 2 of body 1 middle part caliber is respectively arranged with rectifier 4; The needs of regime flow when wherein, rectifier 4 is used to flow through the pipeline laminar flow zone; When laminar flow element 3 is used for gas flow, satisfy the laminar flow condition when measuring flow.Be fixing, device laminar flow element 3, or the needs of rectifier 4, can in body 1, be provided with device laminar flow element 3, or rectifier 4 mounting grooves, directly with laminar flow element 3, or rectifier 4 is fixed in the mounting groove.Body 1 can adopt monoblock type, also can be set to be made of body and tube head.The link of body and tube head can be set to be threaded or flange join type; Earlier with laminar flow element 3, rectifier 4 places in the body (mounting groove) respectively, then tube head is connected by screw thread or flange with body during device.Body 1 can adopt engineering plastics, or metal materials such as (as aluminium) is made.
In Fig. 2, for adapting to the measurement needs of big caliber and big flow, the caliber at body 1 middle part can be set to the undergauge tubular type, and the big caliber in middle part place is provided with two pressure ports 2.The outside that is provided with 3, two pressure ports 2 of laminar flow element between interior two pressure ports 2 of big caliber is respectively arranged with rectifier 4.Its shapes such as body 1, pressure port 2, laminar flow element 3, rectifier 4, structure, manufacture, material are described like Fig. 1, so in this omission.
In Fig. 3, used flat board in the rectifier 3 among the present invention, the laminar flow element 4 can adopt the flat shape shown in the figure, makes through winding; Its material can be selected flexible materials such as steel plate, aluminium sheet or engineering plastics for use.
In Fig. 4, used corrugated plate in the rectifier 3 among the present invention, the laminar flow element 4 can adopt the flat shape of the corrugated plate shown in the figure, makes through winding; Its material can be selected flexible materials such as steel plate, aluminium sheet or engineering plastics for use.
In Fig. 5, corrugated plate and flat laminar flow element 3, or the method for making of rectifier 4 can adopt winding method to make.Now the laminar flow element 3 with corrugated plate and flat making is an example, and the concrete method for making of its winding is as follows:
1, choose corrugated plate and dull and stereotyped width and length according to the length of the pipe (or groove) in its body 1 of laminar flow flow sensor and the size of internal diameter.
2, get a plug, the bar shaped corrugated plate and a dull and stereotyped end of Fixed width, fixed length is fixed on the plug.
3, then rotate plug, with bar shaped corrugated plate and dull and stereotyped multiple wraps.
4, when bar shaped corrugated plate and dull and stereotyped multiple wraps, when its outside dimension reaches pipe (groove) internal diameter of body 1, cut off bar shaped corrugated plate and flat board, can process laminar flow element 3.
In like manner, same method, can make corrugated plate and flat rectifier 4.
For measuring the needs of different fluid, laminar flow element 3 also can be integrated by one or more kapillary.Rectifier 4 also can be made by pore screen pack formula.
When adopting kapillary making layer fluid element 3, can choose internal diameter capillaceous, length and number according to the length of the pipe (groove) of its body 1 of laminar flow flow sensor and the size of internal diameter.Then that kapillary is integrated a branch of, make the laminar flow element 3 of many capillaries formula after fixing.
When adopting screen pack to make rectifier 4, can make pore screen pack formula rectifier 4 according to the big or small clip pore screen pack of pipe (groove) internal diameter of its body 1 of laminar flow flow sensor.Pore screen pack formula rectifier 4 also has filtration concurrently.
When the present invention used in reality, when gas stream during through laminar flow element 3, gas flow satisfied laminar flow condition, will produce pressure differential in the upstream and downstream of laminar flow element 3.According to fluid mechanics principle, the flow that flows through laminar flow element 3 can be directly proportional with pressure reduction, obtains the information of flow by two pressure ports 2, just can learn the accurate flow of gas of the pipeline of flowing through.
Claims (9)
1. gas laminar flow rate sensor, it is characterized in that, body is set to the caliber formula, caliber place, middle part is provided with two pressure ports, be provided with laminar flow element between two pressure ports in the caliber, the outside of two pressure ports is respectively arranged with rectifier in the caliber, and the mouth of pipe at body two ends is provided with connecting thread or ring flange.
2. a kind of gas laminar flow rate sensor according to claim 1, it is characterized in that, the body caliber is set to the undergauge tubular type, big caliber place, middle part is provided with two pressure ports, be provided with laminar flow element between two pressure ports in the big caliber, the outside of two pressure ports is respectively arranged with rectifier in the big caliber.
3. a kind of gas laminar flow rate sensor according to claim 1 is characterized in that, the corrugated plate that laminar flow element is set to twine and flat.
4. a kind of gas laminar flow rate sensor according to claim 1 is characterized in that, corrugated plate that rectifier is set to twine and flat formula.
5. a kind of gas laminar flow rate sensor according to claim 1 is characterized in that laminar flow element is set to by one or more kapillary integrated.
6. a kind of gas laminar flow rate sensor according to claim 1 is characterized in that, rectifier is set to pore screen pack formula.
7. a kind of gas laminar flow rate sensor according to claim 1 and 2 is characterized in that the pressure port internal diameter is provided with connecting thread.
8. a kind of gas laminar flow rate sensor according to claim 1 and 2 is characterized in that body is made of body and tube head, and the link of body and tube head is set to screw connected.
9. a kind of gas laminar flow rate sensor according to claim 1 and 2 is characterized in that, the caliber place at middle part is provided with the device laminar flow element in the body, or the mounting groove of rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02128947 CN1395082A (en) | 2002-08-23 | 2002-08-23 | Gas laminar flow rate sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02128947 CN1395082A (en) | 2002-08-23 | 2002-08-23 | Gas laminar flow rate sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1395082A true CN1395082A (en) | 2003-02-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02128947 Pending CN1395082A (en) | 2002-08-23 | 2002-08-23 | Gas laminar flow rate sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN1395082A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175581A (en) * | 2011-12-21 | 2013-06-26 | 新奥科技发展有限公司 | Flow channel structure and fluid flow measurement device |
| CN106979807A (en) * | 2015-11-30 | 2017-07-25 | 阿克塞特里斯股份公司 | Flow-rate measurement unit and flow rate control unit |
| EP3370039A1 (en) * | 2017-03-03 | 2018-09-05 | MAN Truck & Bus AG | Motor vehicle pipe with a mixing element made from a wire structure |
| CN109696212A (en) * | 2017-10-23 | 2019-04-30 | 中国石油化工股份有限公司 | A kind of minor diameter differential pressure flowmeter |
| CN109738030A (en) * | 2019-01-25 | 2019-05-10 | 中国计量大学 | Potential formula laminar flow measurement method and device |
| CN111272236A (en) * | 2020-02-26 | 2020-06-12 | 西北工业大学 | Gas flow calculation method of gas laminar flow meter and gas laminar flow meter |
-
2002
- 2002-08-23 CN CN 02128947 patent/CN1395082A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175581A (en) * | 2011-12-21 | 2013-06-26 | 新奥科技发展有限公司 | Flow channel structure and fluid flow measurement device |
| CN106979807A (en) * | 2015-11-30 | 2017-07-25 | 阿克塞特里斯股份公司 | Flow-rate measurement unit and flow rate control unit |
| CN106979807B (en) * | 2015-11-30 | 2020-06-16 | 阿克塞特里斯股份公司 | Flow rate measuring unit and flow rate control unit |
| EP3370039A1 (en) * | 2017-03-03 | 2018-09-05 | MAN Truck & Bus AG | Motor vehicle pipe with a mixing element made from a wire structure |
| CN108843459A (en) * | 2017-03-03 | 2018-11-20 | 曼卡车和巴士股份公司 | Motor vehicle pipeline with the mixed component being made of wire rod structure |
| US11053895B2 (en) | 2017-03-03 | 2021-07-06 | Man Truck & Bus Ag | Motor vehicle pipeline with a mixing element made from a wire structure |
| CN109696212A (en) * | 2017-10-23 | 2019-04-30 | 中国石油化工股份有限公司 | A kind of minor diameter differential pressure flowmeter |
| CN109738030A (en) * | 2019-01-25 | 2019-05-10 | 中国计量大学 | Potential formula laminar flow measurement method and device |
| CN109738030B (en) * | 2019-01-25 | 2023-10-03 | 中国计量大学 | Pressure potential difference type laminar flow measuring method and device |
| CN111272236A (en) * | 2020-02-26 | 2020-06-12 | 西北工业大学 | Gas flow calculation method of gas laminar flow meter and gas laminar flow meter |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |