CN85100330A - The dynamic pressure partial flowmeter - Google Patents
The dynamic pressure partial flowmeter Download PDFInfo
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- CN85100330A CN85100330A CN 85100330 CN85100330A CN85100330A CN 85100330 A CN85100330 A CN 85100330A CN 85100330 CN85100330 CN 85100330 CN 85100330 A CN85100330 A CN 85100330A CN 85100330 A CN85100330 A CN 85100330A
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- flowmeter
- connecting pipe
- flow tube
- dynamic pressure
- bypass
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Abstract
A kind of survey liquid that connecting pipe constituted (liquid that viscosity is little) flowmeter that has the sealing of single hole one end by flow tube, flowmeter, common connecting pipe and a side, it is according to shunting principle, utilize the part dynamic pressure to get mean flow rate in the pipe, part water in the large pipeline is introduced in the flowmeter in bypass, directly measured full flow in the large pipeline by its ratio.This device autogamy bypass, gauging table are in bypass, and it is little to have a resistance, and negotiability is big, and it is low consume energy, accurate measurement, and the range broad is not subjected to water hammer, humidity effect, long service life, the maintenance of can not cutting off the water, cost is hanged down erected cost advantage such as less.
Description
The invention belongs to flow instrument.
The flowmeter that multiple survey fluid flow has been arranged.For example: Annular Round Model PFB (seeing shown in Figure 1), it is the sleeve pipe that the middle part that a side has 4 holes (upstream face) opposite side opposite with it is had a mouth of pipe, is installed in and gets fluid differential pressure in the pipeline.Measure by secondary instrument.Because this flowmeter adopts the secondary instrument metering, so annex is more, is subjected to the easy break-down that influences of various factors, and maintenance also costliness of trouble and price.General flowmeter must be installed isometrical bypass in parallel for the ease of maintenance on pipeline when installing, and be furnished with three valves.
The present invention improves at the problem of above-mentioned existence, according to shunting principle, utilizes the part dynamic pressure to get mean flow rate in the pipe, and the partially liq in the large pipeline is introduced in the flowmeter in bypass, directly measures full flow in the large pipeline by its ratio.
Metering when this flowmeter mainly solves liquid (liquid that viscosity is little) by large diameter pipeline and the difficult problem of maintenance.
Therefore the present invention provides a dynamic pressure partial flowmeter, it includes a flow tube, be communicated with a common connecting pipe and one one side have the sealing of single hole one end connecting pipe linker and be connected on flowmeter in the linker.
Two connecting pipes all are vertically to insert in the flow tube by the hole of departing from the flow tube center line.One of them connecting pipe adopts the single tube single hole to get flow tube inner fluid mean flow rate, and the die that makes the Kong Xinyu flow tube is on a vertical line, the aperture is in face of fluid flow direction, bore is greater than the diameter of orifice diameter and outlet thereof, another connecting pipe be the uncovered internal diameter of single tube greater than inlet diameter, its port installation site must not exceed the flow tube inwall.
Be equipped with valve for the ease of maintenance and installation on linker, the installation site of linker can be above flow tube or the side, but flowmeter should keep level.
Compared with the prior art the present invention has simple in structure, the autogamy bypass, and flowmeter is in bypass, and resistance is little, and negotiability is big, it is low to consume energy, directly metering, accurate measurement, range broad, be not subjected to water hammer, humidity effect, long service life, the maintenance of can not cutting off the water, cost is hanged down advantages such as erected cost is few.
Fig. 1 is the synoptic diagram of existing Annular Round Model PFB.
Fig. 2 is the configuration diagram of dynamic pressure partial flowmeter.1 is flow tube among the figure, and 2 is sealing gasket, and 3 is screw, and 4 is 2
#(common) connecting pipe, 5 is ball valve, and 6 is straight tube, and 7 is elbow, and 8 is pipe adapter, and 9 is nut, and 10 is flowmeter, and 11 is 1
#(side has single hole) connecting pipe, 12 is the flange on the connecting pipe, 13 is the flange seat on the flow tube.
Fig. 3 is the cut-open view of flow tube.
Fig. 4 is 1
#, 2
#The cut-open view of connecting pipe.
Now, the specific embodiment by a dynamic pressure partial flowmeter describes the present invention in detail:
This example is to survey the flowmeter of discharge, and it comprises that two ends have the flow tube 1 of flange, are formed by iron casting.On flow tube, be cast with two and have the upright opening that flange seat 13 departs from the tube hub line.Linker is by 6,2 ball valves 5,1 of 7,2 straight tubes of 82 elbows of 10,2 pipe adapters of a little water meter
#Connecting pipe 11 and 2
#Connecting pipe 4 constitutes (seeing shown in Figure 2).And 1
#, 2
#Connecting pipe inserts respectively in two holes on the flow tube, and by the 13 usefulness screws 3 of the flange seat on the flange on the connecting pipe 12 and the flow tube they is linked to be integral body, is added with rubber washer 2 wherein 2 in the junction
#Connecting pipe 4 is pipes of open at both ends, and bore is greater than inlet diameter, and the port that inserts flow tube does not exceed the flow tube inwall.1
#Connecting pipe 11 is the uncovered other end welded closure of an end, and has a hole by the sidepiece of blind end pipe, leaves a small space between them, and bore is greater than orifice diameter and outlet diameter (seeing shown in Figure 4) thereof.The die of its Kong Xinyu flow tube on a vertical line, the aperture towards near the flange side of flow tube.
In use, flowmeter is installed in the pipeline, makes 1
#The inlet opening of connecting pipe 11 is in face of water (flow) direction, and little water meter is on the horizontal level, when measurement of discharge, makes 2 ball valves 5 be in full-gear, and part water is from 1
#The inlet opening of connecting pipe 11 enters linker, through too small water meter 10,2
#Connecting pipe 4 flows back in the pipeline again.
Claims (4)
1, a kind of dynamic pressure partial flowmeter that includes flow tube [1], flowmeter [10], linker and a common connecting pipe [4] is characterized in that having in addition one one side to have the connecting pipe [11] of single hole one end sealing.
2, dynamic pressure partial flowmeter according to claim 1, it is characterized in that said two connecting pipes all are vertically to insert flow tube by the hole of departing from the flow tube center line, a side has the bore of connecting pipe of single hole greater than the diameter of inlet opening diameter and outlet thereof.
3, according to claim 1,2 described dynamic pressure partial flowmeters, it is characterized in that a said side has the connecting pipe of single hole one end sealing, the die of its Kong Xinyu flow tube and is positioned on the flow measurement point of mean flow rate on a vertical line.
4, according to claim 1,2 described dynamic pressure partial flowmeters, it is characterized in that the port installation site of said common connecting pipe does not exceed the inside pipe wall of flow tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100330A CN85100330B (en) | 1985-04-01 | 1985-04-01 | Flow counter of the dynamic pressure partial flow type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100330A CN85100330B (en) | 1985-04-01 | 1985-04-01 | Flow counter of the dynamic pressure partial flow type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85100330A true CN85100330A (en) | 1987-01-17 |
| CN85100330B CN85100330B (en) | 1988-03-23 |
Family
ID=4791068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85100330A Expired CN85100330B (en) | 1985-04-01 | 1985-04-01 | Flow counter of the dynamic pressure partial flow type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85100330B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588699A (en) * | 2012-02-29 | 2012-07-18 | 北京中油联自动化技术开发有限公司 | Flow equalizer |
| CN102706397A (en) * | 2012-05-08 | 2012-10-03 | 东北电力科学研究院有限公司 | Water-flow measuring device with large diameter and low pressure head and measuring method |
| CN103180541A (en) * | 2010-09-15 | 2013-06-26 | 控制压力营运私人有限公司 | Managed pressure drilling apparatus |
-
1985
- 1985-04-01 CN CN85100330A patent/CN85100330B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103180541A (en) * | 2010-09-15 | 2013-06-26 | 控制压力营运私人有限公司 | Managed pressure drilling apparatus |
| US9388650B2 (en) | 2010-09-15 | 2016-07-12 | Managed Pressure Operations Pte Ltd | Drilling apparatus |
| CN102588699A (en) * | 2012-02-29 | 2012-07-18 | 北京中油联自动化技术开发有限公司 | Flow equalizer |
| CN102706397A (en) * | 2012-05-08 | 2012-10-03 | 东北电力科学研究院有限公司 | Water-flow measuring device with large diameter and low pressure head and measuring method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85100330B (en) | 1988-03-23 |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| RJ01 | Rejection of invention patent application after publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |