CN102445243B - Flow-measuring device with flow stabilizing function - Google Patents
Flow-measuring device with flow stabilizing function Download PDFInfo
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- CN102445243B CN102445243B CN2011103493435A CN201110349343A CN102445243B CN 102445243 B CN102445243 B CN 102445243B CN 2011103493435 A CN2011103493435 A CN 2011103493435A CN 201110349343 A CN201110349343 A CN 201110349343A CN 102445243 B CN102445243 B CN 102445243B
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Abstract
A flow-measuring device with a flow stabilizing function belongs to the technical field of flowing measurement and comprises a flow stabilizing pipe (1) and a support (7). Semi-cylindrical pressure collecting chamber (3) each of which is covered by a filter wire mesh and provided with three pressure collecting circular holes (2) and cylindrical isolating chambers (6) are symmetrically arranged at two ends of the flow stabilizing pipe (1). A main chamber (8) is arranged between the two cylindrical isolating chambers (6), a piezoresistive sensor (4) is attached to a joint position of the pressure collecting chambers (3) and the isolating chambers (6) through adhesive, an isolating plate (5) is arranged between the isolating chambers (6) and the main chamber (8), a wire of the piezoresistive sensor (4) penetrates the isolating plate (5) to be connected with a signal processing circuit board in the main chamber (8), and a wire of the signal processing circuit board is led out by the support (7) to be connected with a display recording device. The flow-measuring device is simple in structure, obvious in effect, basically free of pressure loss and capable of greatly improving stability and continuousness when measuring in a state of stabilized flow and improving accuracy of monitoring.
Description
Technical field:
The present invention relates to a kind of flow measurement device, belong to the flow monitoring technical field with current stabilization effect.
Background technology:
In the process that flow is monitored, use at most at present according to the differential pressure flowmeter that produces the design of differential pressure action principle.But there is following shortcoming in differential pressure flowmeter: 1, on tested pipeline, form big resistance, influence proper flow.2, around differential pressure detector spare, form whirlpool, be prone to produce fouling, cause measurement inaccurate.3, inconvenience is installed.Flow detection is measured (collection) requirement except that satisfying both at home and abroad at present, in following several respects bigger improvement is arranged: 1, less change flows to.2, high precision, sensitivity.3, chronicity, instantaneity, pulsating nature.4, convenience.But still when having flow monitoring, differential pressure flowmeter can make the form of fluid change, and can not under the current stabilization state, detect, and such measurement result can not reflect the truth of fluctuations in discharge fully.
Through the document retrieval, do not find the relevant public reported of the flow detector identical with technical scheme of the present invention.
Summary of the invention:
The objective of the invention is to overcome the deficiency of prior art, and a kind of crushing that do not have basically is provided, have the flow detector of current stabilization effect.
Flow detector of the present invention is by having the barretter (1) of meeting flow path direction pressure and downbeam pressure and placing the support (7) on the barretter (1) to constitute; Wherein: barretter (1) two ends be arranged with that silk screen covers by filtering, have three and adopt the half round posts of pressing circular hole (2) and adopt and press chamber (3) and cylindrical separate cavities (6); Be provided with the main cavity (8) of placing signal processing circuit board between two cylindrical separate cavities (6); Adopting the junction of pressing between chamber (3) and the separate cavities (6) sticks with glue and connects piezoresistance sensor (4); Be equipped with division board (5) between separate cavities (6) and the main cavity (8) with isolation and sealing function; The lead of piezoresistance sensor (4) passes division board (5) and inserts the signal processing circuit board in the main cavity (8), and the lead of signal processing circuit board is drawn the displayed record equipment that connects by support (7).
The used device of the present invention is that market is bought basically.Wave filter in the signal processing circuit, isolator, amplifier and difference subtracter are public technology.
The advantage that the present invention has is simple in structure, effect does not have crushing obviously, is basically measured under the current stabilization state, and its stability and continuity have improvement by a relatively large margin, have improved monitoring accuracy.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present invention.
Accompanying drawing 2 is an assembling synoptic diagram of the present invention.
Accompanying drawing 3 is a signal processing circuit theory diagram of the present invention.
Embodiment:
The used device of the present invention is that market is bought basically.Wave filter in the signal processing circuit, isolator, amplifier and difference subtracter are public technology.Its assembling connects as shown in Figure 2.
The present invention is by having the barretter 1 of meeting flow path direction pressure and downbeam pressure and placing the support 7 on the barretter 1 to constitute; Wherein: barretter 1 two ends be arranged with that silk screen covers by filtering, have three and adopt the half round posts of pressing circular hole 2 and adopt and press chamber 3 and cylindrical separate cavities 6; Two 6 of cylindrical separate cavities are provided with the main cavity 8 of placing signal processing circuit board; Adopting the junction of pressing between chamber 3 and the separate cavities 6 sticks with glue and connects piezoresistance sensor 4; 8 of separate cavities 6 and main cavities are equipped with the division board 5 with isolation and sealing function; The lead of piezoresistance sensor 4 passes the signal processing circuit board that division board 5 inserts in the main cavity 8, and the lead of signal processing circuit board is drawn the displayed record equipment that connects by support 7.
The flow measurement process is: barretter 1 collects meets flow path direction pressure and downbeam pressure at first inserts low-pass filter; Elimination high frequency composition; Synchronous signal is also by smoothly; Through the both-end buffer circuit sampling section and processing section are separated, isolation signals obtains pressure difference through amplifier input difference subtracter, pressure difference signal is changed into the voltage signal that is directly proportional with detected fluid speed.
During use: barretter 1 is connected with tested pipeline 9 through support 7, shown in accompanying drawing 2.To be placed on the position that needs the monitoring flow according to the device that assembling shown in Figure 2 connects, be connected with the displayed record equipment (multi-purpose computer or oscillograph) of signal processing circuit.Open displayed record equipment, record shows flow velocity and the flow results of being concerned about.
Claims (1)
1. the flow detector with current stabilization effect is characterized in that this pick-up unit comprises having the barretter (1) of meeting flow path direction pressure and downbeam pressure and place the support (7) on the barretter (1); Wherein: barretter (1) two ends be arranged with that silk screen covers by filtering, have three and adopt the half round posts of pressing circular hole (2) and adopt and press chamber (3) and cylindrical separate cavities (6); Be provided with the main cavity (8) of placing signal processing circuit board between two cylindrical separate cavities (6); Adopting the junction of pressing between chamber (3) and the separate cavities (6) sticks with glue and connects piezoresistance sensor (4); Be provided with division board (5) between separate cavities (6) and the main cavity (8) with isolation and sealing function; The lead of piezoresistance sensor (4) passes division board (5) and inserts the signal processing circuit board in the main cavity (8), and the lead of signal processing circuit board is drawn the displayed record equipment that connects by support (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103493435A CN102445243B (en) | 2011-11-08 | 2011-11-08 | Flow-measuring device with flow stabilizing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103493435A CN102445243B (en) | 2011-11-08 | 2011-11-08 | Flow-measuring device with flow stabilizing function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102445243A CN102445243A (en) | 2012-05-09 |
| CN102445243B true CN102445243B (en) | 2012-11-21 |
Family
ID=46007961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103493435A Expired - Fee Related CN102445243B (en) | 2011-11-08 | 2011-11-08 | Flow-measuring device with flow stabilizing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102445243B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343846B (en) * | 2013-07-15 | 2015-08-12 | 云南大学 | A kind of pressure-adjustable abnormity inside diameter-variable adjusts stream device |
| CN103630175B (en) * | 2013-12-16 | 2016-04-20 | 云南大学 | A kind of three-level annular flexible chain is correlated with torrent current surveying device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053493A (en) * | 1991-02-11 | 1991-07-31 | 北京化工学院 | Mass flowmeter |
| CN2535778Y (en) * | 2001-12-19 | 2003-02-12 | 王犇 | Measuring calibration device for tail smoke discharge path of coal-burning boiler |
| CN2821533Y (en) * | 2005-09-23 | 2006-09-27 | 李吉男 | Flow saving stable flow type vortex street flowmeter |
| CN201210064Y (en) * | 2008-06-06 | 2009-03-18 | 江苏红光仪表厂 | Integrated cone shaped flow meter |
-
2011
- 2011-11-08 CN CN2011103493435A patent/CN102445243B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053493A (en) * | 1991-02-11 | 1991-07-31 | 北京化工学院 | Mass flowmeter |
| CN2535778Y (en) * | 2001-12-19 | 2003-02-12 | 王犇 | Measuring calibration device for tail smoke discharge path of coal-burning boiler |
| CN2821533Y (en) * | 2005-09-23 | 2006-09-27 | 李吉男 | Flow saving stable flow type vortex street flowmeter |
| CN201210064Y (en) * | 2008-06-06 | 2009-03-18 | 江苏红光仪表厂 | Integrated cone shaped flow meter |
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| Publication number | Publication date |
|---|---|
| CN102445243A (en) | 2012-05-09 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20131108 |