CN201513718U - Pipeline structure for quickly and accurately metering liquid capacity - Google Patents
Pipeline structure for quickly and accurately metering liquid capacity Download PDFInfo
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- CN201513718U CN201513718U CN2009203138855U CN200920313885U CN201513718U CN 201513718 U CN201513718 U CN 201513718U CN 2009203138855 U CN2009203138855 U CN 2009203138855U CN 200920313885 U CN200920313885 U CN 200920313885U CN 201513718 U CN201513718 U CN 201513718U
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Abstract
The utility model discloses a pipeline structure for quickly and accurately metering the liquid capacity, which structurally comprises a first spherical valve (1) connected with a pump (2); the pump (2) is connected with a filter (7); the filter (7) is connected with a flowmeter (3); and the flowmeter (3) is connected with an electromagnetic valve (4), a check valve (5) and a second spherical valve (6) sequentially. The pipeline structure is characterized in that a return valve (8) is arranged between the first spherical valve (1) and the filter (7). In the utility model, the return valve is connected to two ends of the pump in parallel, so that the starting time and the shutdown time of the electromagnetic valve are short and the measurement is more accurate; the distance of the outlet pipeline from a point A to a point B is short, so that all the liquid can be drained quickly and the next measurement can be quickly performed; and compared with the prior art, the utility model has the advantages of stable flow rate, accurate measurement, quick measurement, etc.
Description
Technical field
The utility model relates to a kind of pipeline structure that is used for the quick accurate measurement of fluid flow, belongs to the liquid flow mearuement technical field.
Background technique
In the liquid flow mearuement Control System Design, because the inherent characteristic of fluid flowmeter (being flow transducer) has determined liquid to be measured in pipeline, require flow uniform and stable, could guarantee the measuring accuracy of sensor.But in actual applications, because solenoid valve opens and cuts out and needs certain pressure and could work reliably, conventional design can not meet this requirement, so when beginning metering and finishing metering, flow is extremely evenly unstable, the flowmeter survey error is big.As shown in Figure 2, conventional workflow is to open first ball valve 1 and second ball valve 6, close the 3rd ball valve 9, while primer pump 2 and solenoid valve 4, liquid flows out from outlet through pump 2 → filter 7 → flowmeter 3 → solenoid valve 4 → safety check 5 → the second ball valves 6 from inlet.Metering is finished and is closed solenoid valve 4.When solenoid valve 4 was opened, unlatching moment loine pressure was less than the cracking pressure of solenoid valve 4, and 4 opening times of solenoid valve are slow, and mass flow discrepancy is even stable, and the flowmeter survey error is big.After metering was finished pipeline and closed, owing to there is siphon principle, pipeline was long between the AB on the same horizontal line of outlet back, and liquid that can not flows to end at once, but slowly flows out, influence gage work next time.
Summary of the invention
The purpose of this utility model is: a kind of stability of flow is provided, measures the pipeline structure that is used for the quick accurate measurement of fluid flow accurately, to overcome the deficiencies in the prior art.
The utility model is to constitute like this: the pipeline structure that is used for the quick accurate measurement of fluid flow, structure comprises first ball valve, first ball valve connects pump, pump connects filter, filter connection traffic meter, flowmeter connects solenoid valve, safety check and second ball valve successively, is connected with reflux valve between first ball valve and filter.
The utility model is at the two ends of pump and connected a reflux valve.Because pipeline has constant compression force, and the opening time of solenoid valve just reaches the fastest, flow is saved stable most when solenoid valve is opened.Metering is finished and is closed solenoid valve earlier, and when closing pump again, because what close earlier is solenoid valve, pipeline is also maintaining constant compression force, is that the closed electromagnetic valve time is the shortest greater than the closing pressure of solenoid valve.In addition, outlet designs as shown in Figure 1, though also there is siphon principle, the distance that the pipeline on the same horizontal line is ordered from the A point to B is very short, so liquid can flow to end very soon, can carry out next time very soon and measure.Compare with prior art, the utlity model has stability of flow, measure accurately, measure advantages such as quick.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is the measurement structure schematic representation of prior art.
Embodiment
Embodiment of the present utility model: as shown in Figure 1, first ball valve 1 of structure import, first ball valve 1 connects pump 2 by pipeline, pump 2 connects filter 7, filter 7 connection traffic meters 3, flowmeter 3 connects solenoid valve 4, safety check 5 and second ball valve 6 successively, is connected with reflux valve 8 between first ball valve 1 and filter 7, and reflux valve 8 is in parallel with pump 2.The outlet back is to flow out pipeline A to B, and the sewage draining exit of the 3rd ball valve 9 connections.Flow out the weak point that the distance between the pipeline A to B designs as far as possible, as early as possible draining liq.
Workflow is to open first ball valve 1 and second ball valve 6, close the 3rd ball valve 9, elder generation's primer pump 2, and then start solenoid valve 4, liquid flows in the pipeline AB from outlet through pump 2, filter 7, flowmeter 3, solenoid valve 4, safety check 5, second ball valve 6 from first ball valve 1 of inlet.Metering is finished and is closed solenoid valve 4 earlier, closes pump 2 again.From workflow as can be seen: first primer pump 2, make pipeline be in pressure constant state in advance, the pressure size is by reflux valve 8 decisions of selecting, promptly when the pressure of pipeline during greater than the rated pressure of reflux valve 8, reflux valve 8 can release pressures, make pipeline keep the working pressure of safety, avoid superpressure to damage parts, so because pipeline has constant compression force, and the opening time of solenoid valve 4 just reaches the fastest, flow is saved stable most when solenoid valve 4 is opened.Metering is finished and is closed solenoid valve 4 earlier, and when closing pump 2 again, because what close earlier is solenoid valve 4, pipeline is also maintaining constant compression force, is that 4 shut-in times of solenoid valve are the shortest greater than the closing pressure of solenoid valve 4.In addition, owing to also have siphon principle, but the distance of ordering from the A point to B is very short, so liquid can flow to end very soon.
Claims (1)
1. pipeline structure that is used for the quick accurate measurement of fluid flow, structure comprises first ball valve (1), first ball valve (1) connects pump (2), pump (2) connects filter (7), filter (7) connection traffic meter (3), flowmeter (3) connects solenoid valve (4), safety check (5) and second ball valve (6) successively, it is characterized in that: be connected with reflux valve (8) between first ball valve (1) and filter (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203138855U CN201513718U (en) | 2009-11-02 | 2009-11-02 | Pipeline structure for quickly and accurately metering liquid capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203138855U CN201513718U (en) | 2009-11-02 | 2009-11-02 | Pipeline structure for quickly and accurately metering liquid capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201513718U true CN201513718U (en) | 2010-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203138855U Expired - Fee Related CN201513718U (en) | 2009-11-02 | 2009-11-02 | Pipeline structure for quickly and accurately metering liquid capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201513718U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107500241A (en) * | 2017-08-31 | 2017-12-22 | 瑞安市三阳科技有限公司 | The liquid charging device of bottle placer |
| CN108119755A (en) * | 2017-12-20 | 2018-06-05 | 申娟 | A kind of heavy oil pipeline conveying test device based on Internet of Things |
-
2009
- 2009-11-02 CN CN2009203138855U patent/CN201513718U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107500241A (en) * | 2017-08-31 | 2017-12-22 | 瑞安市三阳科技有限公司 | The liquid charging device of bottle placer |
| CN108119755A (en) * | 2017-12-20 | 2018-06-05 | 申娟 | A kind of heavy oil pipeline conveying test device based on Internet of Things |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20111102 |