CN101251397A - By-pass type pipeline flowmeter - Google Patents
By-pass type pipeline flowmeter Download PDFInfo
- Publication number
- CN101251397A CN101251397A CNA2008100236076A CN200810023607A CN101251397A CN 101251397 A CN101251397 A CN 101251397A CN A2008100236076 A CNA2008100236076 A CN A2008100236076A CN 200810023607 A CN200810023607 A CN 200810023607A CN 101251397 A CN101251397 A CN 101251397A
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- Prior art keywords
- pipe
- flowmeter
- differential pressure
- bypass
- flow
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Abstract
The invention provides a bypass type pipe flowmeter which is particularly suitable for the flow measurement of a large pipe. A bypass pipe is connected in parallel with a pipe to be measured, a pressure differential type flowmeter is arranged on the bypass pipe, and a signal collecting and processing device is arranged on the pressure differential type flowmeter. The flow rate in the pipe to be measured can be converted at real time from the flow rate in the bypass pipe at different flowing statuses. The bypass type pipe flowmeter does not need directly measure the flow rate in the large pipe, thereby overcoming the problem of bad accuracy in the flow measurement of the pipe with a large diameter. The bypass type pipe flowmeter is widely practicable with simple structure, convenient measurement, reliable performance and correct measuring result.
Description
Technical field
The present invention relates to measure the instrument and meter of pipeline fluid flow, specifically, is a kind of by-pass type pipeline flowmeter of measuring the pipeline fluid flow.
Background technology
At present, the flow measurement of large-scale pipeline is to adopt the fluid-velocity survey method substantially, i.e. the speed of limited point on certain section of measurement line is by calculating the flow of this section.Because the unevenness of velocity flow profile causes measurement result not accurate enough on the pipeline.In addition, the flow measurement difficulty of big caliber pipeline is also bigger.
Summary of the invention
The objective of the invention is the problem that exists at prior art, provide a kind of simple in structure, measurement result is accurate, the bypass type flowmeter that can measure large-scale piping flow.
By-pass type pipeline flowmeter of the present invention, a by-pass pipe road in parallel on pipeline to be measured, bypass line is provided with differential pressure flowmeter, and differential pressure flowmeter is provided with signal acquisition and processing apparatus.
Described signal acquisition and processing apparatus is made of differential pressure transmitter and flow integrator, and differential pressure transmitter is connected with differential pressure flowmeter on being connected bypass line, and flow integrator links to each other with differential pressure transmitter.
The present invention is a by-pass pipe road in parallel on pipeline to be measured, by the differential pressure flowmeter that is provided with on the bypass line, measures the flow of bypass line under the different flow states, can converse the flow in the pipeline to be measured in view of the above in real time.Owing to needn't directly measure the flow in the large-scale pipeline, overcome the problem that large-scale piping flow is measured the poor accuracy that exists, be specially adapted to the flow measurement of large-scale pipeline.It is simple in structure, measurement is convenient, dependable performance, measurement result accurately, have a practicality widely.
Description of drawings
Accompanying drawing is a structural front view of the present invention.
Among the figure: pipeline 1 to be measured, bypass line 2, differential pressure flowmeter 3, differential pressure transmitter 4, flow integrator 5.
Embodiment
Below in conjunction with accompanying drawing one embodiment of the present of invention are further described:
Shown in the accompanying drawing, on one section that treats measurement of discharge straight large-scale pipeline, a diameter in parallel is about the bypass line 2 of 100mm on the pipeline 1 promptly to be measured, and the diameter of bypass line 2 is generally 1/10th of pipeline diameter to be measured.One differential pressure flowmeter 3 is housed on bypass line 2, can measures inflow-rate of water turbine in the bypass line 2 by differential pressure flowmeter 3.Differential pressure transmitter 4 is housed on the differential pressure flowmeter 3, be connected with flow integrator 5 on differential pressure transmitter 4 signal output parts, the pressure difference signal of differential pressure flowmeter 3 is by differential pressure transmitter 4, send into flow integrator 5, obtain the inflow-rate of water turbine in the bypass line 2, can converse the flow in the pipeline 1 to be measured thus.
Claims (2)
1. a by-pass type pipeline flowmeter is characterized in that; Go up a by-pass pipe road (2) in parallel at pipeline to be measured (1), bypass line (2) is provided with differential pressure flowmeter (3), and differential pressure flowmeter (3) is provided with signal acquisition and processing apparatus.
2. by-pass type pipeline flowmeter according to claim 1 is characterized in that; Described signal acquisition and processing apparatus is made of differential pressure transmitter (4) and flow integrator (5), and differential pressure transmitter (4) is connected with differential pressure flowmeter (3) on being connected bypass line (2), and flow integrator (5) links to each other with differential pressure transmitter (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100236076A CN101251397A (en) | 2008-04-09 | 2008-04-09 | By-pass type pipeline flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100236076A CN101251397A (en) | 2008-04-09 | 2008-04-09 | By-pass type pipeline flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101251397A true CN101251397A (en) | 2008-08-27 |
Family
ID=39954903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100236076A Pending CN101251397A (en) | 2008-04-09 | 2008-04-09 | By-pass type pipeline flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101251397A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829829A (en) * | 2012-08-23 | 2012-12-19 | 郑州光力科技股份有限公司 | Method and device for detecting ultrasonic flow by time-difference method |
| CN103017844A (en) * | 2012-11-26 | 2013-04-03 | 昆山北极光电子科技有限公司 | Low cost air flow measuring method |
| CN105953848A (en) * | 2016-05-23 | 2016-09-21 | 西北工业大学 | Differential-pressure linear flowmeter |
| CN109210828A (en) * | 2018-09-13 | 2019-01-15 | 广东芬尼克兹节能设备有限公司 | Heat pump unit and heat pump unit with pulse flowmeter |
| WO2022038402A1 (en) * | 2020-08-19 | 2022-02-24 | Krishnaswamy Kumar | A bypass flowmeter and a method for flowrate measurement through sloped pipelines and penstocks |
-
2008
- 2008-04-09 CN CNA2008100236076A patent/CN101251397A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829829A (en) * | 2012-08-23 | 2012-12-19 | 郑州光力科技股份有限公司 | Method and device for detecting ultrasonic flow by time-difference method |
| CN103017844A (en) * | 2012-11-26 | 2013-04-03 | 昆山北极光电子科技有限公司 | Low cost air flow measuring method |
| CN105953848A (en) * | 2016-05-23 | 2016-09-21 | 西北工业大学 | Differential-pressure linear flowmeter |
| CN105953848B (en) * | 2016-05-23 | 2019-07-05 | 西北工业大学 | A kind of linear flowmeter of differential pressure |
| CN109210828A (en) * | 2018-09-13 | 2019-01-15 | 广东芬尼克兹节能设备有限公司 | Heat pump unit and heat pump unit with pulse flowmeter |
| WO2022038402A1 (en) * | 2020-08-19 | 2022-02-24 | Krishnaswamy Kumar | A bypass flowmeter and a method for flowrate measurement through sloped pipelines and penstocks |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |
Open date: 20080827 |