CN104236657A - Pitot mass flowmeter - Google Patents
Pitot mass flowmeter Download PDFInfo
- Publication number
- CN104236657A CN104236657A CN201410544861.6A CN201410544861A CN104236657A CN 104236657 A CN104236657 A CN 104236657A CN 201410544861 A CN201410544861 A CN 201410544861A CN 104236657 A CN104236657 A CN 104236657A
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- China
- Prior art keywords
- mass flowmeter
- pitot
- stopple coupon
- pipeline
- pipe
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses a pitot mass flowmeter which is provided with a pitot flowmeter. The pitot flowmeter comprises a pitot flow sensor, a differential pressure transmitter and a flow totalizer. The pitot mass flowmeter is provided with a pressure taking head and a pressure guide pipe. The pitot flowmeter further comprises a mass flowmeter body communicated with the pipeline through a sampling pipe and used for measuring the density of flow in the pipeline, the sampling pipe is provided with a drainage pump, and the signal output end of the mass flowmeter body is connected with the signal input end of the flow totalizer. According to the pitot mass flowmeter, the density of fluid in the pipeline is indirectly measured through measurement of the density of the fluid in the sampling pipe, and mass flow of the fluid in the pipeline can be obtained according to the volume flow of the fluid in the pipeline and the density of the fluid. When used, the pitot mass flowmeter is not influenced by the size of the diameter of the pipeline, the diameter of the sampling pipe can be small, and accordingly measurement cost of the mass flow of the fluid in the pipeline can be greatly reduced.
Description
Technical field
the present invention relates to a kind of Pitot bar mass flowmeter of measuring channel inner fluid mass rate.
Background technology
In prior art, mass flowmeter is the flowrate measuring tool of conventional measuring channel inner fluid mass rate.Limit by technical conditions, mass flowmeter of the prior art can only measure the mass rate that caliber is the fluids within pipes of below 300mm, corresponding mass flowmeter is not then had for the liquid mass flow of caliber in the pipeline of more than 300mm, and the cost of the corresponding mass flowmeter of the increase along with pipe diameter also significantly increases, measure the price of caliber at the mass flowmeter of the fluids within pipes mass rate of below 6mm 1-2 ten thousand yuan, measuring the price of caliber close to the mass flowmeter of the fluids within pipes mass rate of 300mm 70-80 ten thousand yuan, therefore during service property (quality) flowmeter survey big-diameter pipeline inner fluid mass rate, cost is too high, and the mass flowmeter that the caliber pipeline that reaches more than 300mm does not match.
Summary of the invention
The Pitot bar mass flowmeter that the technical problem to be solved in the present invention does not restrict by pipe diameter when being to provide flow mass flow in a kind of measuring channel, measurement advantage of lower cost, structure are simple and easy for installation.
For solving the problems of the technologies described above, a kind of Pitot bar of the present invention mass flowmeter, there is bi toba flow meter, this bi toba flow meter comprises bi toba flow sensor, differential pressure transmitter and flow integrator, described bi toba flow sensor has pressure head and connecting pipe, also comprise the mass flowmeter for measuring channel inner fluid density be connected with pipeline by stopple coupon, stopple coupon is equipped with drainage pump, and the signal output part of this mass flowmeter is connected with the signal input part of described flow integrator.
Adopt the Pitot bar mass flowmeter of said structure, during use, bi toba flow sensor is vertically inserted in pipeline, bi toba flow sensor flows to differential pressure transmitter the total head of the fluids within pipes extracted and static pressure signal, differential pressure transmitter flows to flow integrator the differential pressure signal of total head and static pressure, and flow integrator can calculate the volumetric flow rate of fluids within pipes, owing to also comprising the mass flowmeter for measuring channel inner fluid density be connected with pipeline by stopple coupon, stopple coupon is equipped with drainage pump, the signal output part of this mass flowmeter is connected with the signal input part of described flow integrator, drainage pump flows back in pipeline after fluids within pipes can being drained to stopple coupon again, namely drainage pump can ensure that fluids within pipes flows through stopple coupon effectively, mass flowmeter can measure the density of stopple coupon inner fluid, according to the volumetric flow rate of fluids within pipes and the density of fluid, the mass rate of fluids within pipes can be drawn.Mass flowmeter in the present invention is the density indirectly being recorded fluids within pipes by the density of measurement stopple coupon inner fluid, impact not by pipe diameter size when therefore measuring, and the diameter of stopple coupon can be accomplished very little, greatly can reduce the measurement cost of the mass rate of measuring channel inner fluid like this, the present invention introduces stopple coupon, drainage pump on the basis of bi toba flow meter, and structure is relatively simple and easy for installation.
As a modification of the present invention, described stopple coupon has water inlet pipe and return pipe, the bottom of water inlet pipe and return pipe has water inlet and water return outlet respectively, described water inlet pipe and return pipe pass described connecting pipe from top to bottom and stretch out from the bottom of connecting pipe, the sealing of described mass flowmeter is loaded between the water inlet pipe and return pipe on described connecting pipe top, described drainage pump be arranged on be positioned at connecting pipe top water inlet pipe on.Adopt and be actually a stopple coupon after said structure and bi toba flow meter is organically fused into one, stopple coupon becomes a part for connecting pipe, makes installation of the present invention more convenient.
Improve as another kind of the present invention, described stopple coupon is U-shaped, the both sides of U-shaped stopple coupon have water inlet for being connected with pipeline diapire and water return outlet respectively, described mass flowmeter sealing is loaded on the base of U-shaped stopple coupon, and described drainage pump is arranged on the stopple coupon between mass flowmeter and water return outlet.Adopt the present invention after said structure when mounted, two holes corresponding with stopple coupon both sides separately need be opened on pipeline, adopt the advantage of the present invention of said structure be no matter drainage pump in bi toba flow meter or stopple coupon or mass rate in respect of fault time, can keep in repair separately, do not need entirety of the present invention to take off, be conducive to operation and maintenance of the present invention like this.
As a further improvement on the present invention, the caliber of described stopple coupon is at below 6mm.The caliber of stopple coupon, at below 6mm, can make the cost of the mass flowmeter matched with it very low, reduce manufacturing cost of the present invention on the whole.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 is a kind of Pitot bar mass flowmeter that technical scheme according to the present invention proposes structural representation when being arranged on pipeline.
Fig. 2 is the I place structure for amplifying schematic diagram of Fig. 1.
Fig. 3 is another kind of Pitot bar mass flowmeter that technical scheme according to the present invention proposes structural representation when being arranged on pipeline.
Embodiment
See Fig. 1-Fig. 3, first see Fig. 1, Fig. 2, a kind of Pitot bar of the present invention mass flowmeter, there is bi toba flow meter 10, this bi toba flow meter 10 comprises bi toba flow sensor 11, differential pressure transmitter 12 and flow integrator 13, described bi toba flow sensor 11 has pressure 14 and connecting pipe 15, also comprise the mass flowmeter 20 for measuring channel inner fluid density be connected with pipeline 30 by stopple coupon 21, drainage pump 26 stopple coupon 21 is equipped with, the signal output part of this mass flowmeter 20 is connected with the signal input part of described flow integrator 13.Described stopple coupon 21 has water inlet pipe 22 and return pipe 23, the bottom of water inlet pipe 22 and return pipe 23 has water inlet 24 and water return outlet 25 respectively, described water inlet pipe 22 and return pipe 23 pass described connecting pipe 15 from top to bottom and stretch out from the bottom of connecting pipe 15, the sealing of described mass flowmeter 20 is loaded between the water inlet pipe 22 and return pipe 23 on described connecting pipe 15 top, described drainage pump 26 be arranged on be positioned at connecting pipe 15 top water inlet pipe 22 on.
See Fig. 3, described stopple coupon 21 is U-shaped, the both sides of U-shaped stopple coupon have water inlet 24 ' for being connected with pipeline diapire and water return outlet 25 ' respectively, described mass flowmeter 20 sealing is loaded on the base of U-shaped stopple coupon, and described drainage pump 26 is arranged on the stopple coupon 21 between mass flowmeter 20 and water return outlet 25 '.
The caliber of described stopple coupon is at below 6mm.
Claims (4)
1. a Pitot bar mass flowmeter, there is bi toba flow meter (10), this bi toba flow meter (10) comprises bi toba flow sensor (11), differential pressure transmitter (12) and flow integrator (13), described bi toba flow sensor (11) has pressure head (14) and connecting pipe (15), it is characterized in that: also comprise the mass flowmeter for measuring channel inner fluid density (20) be connected with pipeline (30) by stopple coupon (21), drainage pump (26) stopple coupon (21) is equipped with, the signal output part of this mass flowmeter (20) is connected with the signal input part of described flow integrator (13).
2. Pitot bar mass flowmeter as claimed in claim 1, it is characterized in that: described stopple coupon (21) has water inlet pipe (22) and return pipe (23), the bottom of water inlet pipe (22) and return pipe (23) has water inlet (24) and water return outlet (25) respectively, described water inlet pipe (22) and return pipe (23) pass described connecting pipe (15) from top to bottom and stretch out from the bottom of connecting pipe (15), described mass flowmeter (20) sealing is loaded on and is positioned between the water inlet pipe (22) on described connecting pipe (15) top and return pipe (23), described drainage pump (26) is arranged on and is positioned on the water inlet pipe (22) on connecting pipe (15) top.
3. Pitot bar mass flowmeter as claimed in claim 1, it is characterized in that: described stopple coupon (21) is U-shaped, the both sides of U-shaped stopple coupon have water inlet (24 ') for being connected with pipeline diapire and water return outlet (25 ') respectively, described mass flowmeter (20) sealing is loaded on the base of U-shaped stopple coupon, and described drainage pump (26) is arranged on the stopple coupon (21) between mass flowmeter (20) and water return outlet (25 ').
4. the Pitot bar mass flowmeter as described in any one of claim 1-3, is characterized in that: the caliber of described stopple coupon (21) is at below 6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410544861.6A CN104236657A (en) | 2014-10-16 | 2014-10-16 | Pitot mass flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410544861.6A CN104236657A (en) | 2014-10-16 | 2014-10-16 | Pitot mass flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104236657A true CN104236657A (en) | 2014-12-24 |
Family
ID=52225188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410544861.6A Pending CN104236657A (en) | 2014-10-16 | 2014-10-16 | Pitot mass flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104236657A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687959A (en) * | 2017-11-01 | 2018-02-13 | 中山市华源电气设备有限公司 | Testing device and testing method for powder-brewing beverage machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5048323A (en) * | 1987-08-12 | 1991-09-17 | Schlumberger Indusrtries Limited | Fluid metering |
| CN1240510A (en) * | 1996-06-04 | 2000-01-05 | 迪特里奇技术控股公司 | Flow meter pitot tube with temp. sensor |
| CN1246178A (en) * | 1997-01-28 | 2000-03-01 | 德士古发展公司 | Method for optimizing sampling of petroleum pipeline |
| JP2005003678A (en) * | 2003-05-20 | 2005-01-06 | Nippon Applied Flow Kk | Flow measuring instrument, flow rate measuring instrument, and flow rate instrumentation method |
| CN203672420U (en) * | 2013-03-15 | 2014-06-25 | 罗斯蒙特公司 | Flow meter |
| CN204085597U (en) * | 2014-10-16 | 2015-01-07 | 辽宁毕托巴科技有限公司 | A kind of Pitot bar mass flowmeter |
-
2014
- 2014-10-16 CN CN201410544861.6A patent/CN104236657A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5048323A (en) * | 1987-08-12 | 1991-09-17 | Schlumberger Indusrtries Limited | Fluid metering |
| CN1240510A (en) * | 1996-06-04 | 2000-01-05 | 迪特里奇技术控股公司 | Flow meter pitot tube with temp. sensor |
| CN1246178A (en) * | 1997-01-28 | 2000-03-01 | 德士古发展公司 | Method for optimizing sampling of petroleum pipeline |
| JP2005003678A (en) * | 2003-05-20 | 2005-01-06 | Nippon Applied Flow Kk | Flow measuring instrument, flow rate measuring instrument, and flow rate instrumentation method |
| CN203672420U (en) * | 2013-03-15 | 2014-06-25 | 罗斯蒙特公司 | Flow meter |
| CN204085597U (en) * | 2014-10-16 | 2015-01-07 | 辽宁毕托巴科技有限公司 | A kind of Pitot bar mass flowmeter |
Non-Patent Citations (2)
| Title |
|---|
| 屈福林: "质量流量计检定测试方法的探讨", 《电子·仪器仪表用户》 * |
| 章林: "均速毕托管", 《工业仪表与自动化装置》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687959A (en) * | 2017-11-01 | 2018-02-13 | 中山市华源电气设备有限公司 | Testing device and testing method for powder-brewing beverage machine |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |