CN104142390A - Oil-water content calculation method - Google Patents
Oil-water content calculation method Download PDFInfo
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- CN104142390A CN104142390A CN201310667853.6A CN201310667853A CN104142390A CN 104142390 A CN104142390 A CN 104142390A CN 201310667853 A CN201310667853 A CN 201310667853A CN 104142390 A CN104142390 A CN 104142390A
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- oil
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- liquid level
- drainage pipe
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Abstract
The invention relates to an oil-water content calculation method. The method comprises the following steps: before drainage, obtaining the total liquid level height h of oil-water mixed liquid in an oil tank and the height H from a drainage pipeline below a shell of the oil tank to the bottom of the oil tank; during drainage, monitoring when the oil discharge starts through an oil-water detector connected into the drainage pipeline, recording the liquid level height h1 in the oil tank at the starting moment of oil discharge, and calculating according to a formula that c<water> is equal to (h-h1+H)/h to obtain the moisture content. The oil-water detector is connected into the drainage pipeline below the oil tank, according to the principle that water and oil are sequentially discharged due to different densities of oil and water, the oil-water detector can be used for monitoring when water is drained and when oil is discharged and detecting the liquid level height change in the oil tank, and finally, the content of moisture in the oil-water mixed liquid is calculated. Moreover, according to the method, the sensor design difficulty is greatly lowered, the oil-water detector is easy to mount, and the calculation method is simple and feasible, and is high in accuracy.
Description
Technical field
The present invention relates to a kind of profit containing method for measuring and calculating.
Background technology
Existing Chinese patent ZL201020145790.X discloses a kind of Intelligent metering monitoring system of oil field oil storage tank, this system utilizes the data of level sensor real-time Transmission to coordinate the physical dimension of storage tank to calculate the volume of oil water mixture in storage tank, utilize the data that pressure transducer obtains to coordinate the physical dimension of storage tank to calculate the quality of oil water mixture in storage tank, and calculate ow ratio according to water, oily two media density difference, according to ow ratio, obtain oil pump capacity and the water yield.The disclosed profit cubage of this patent method, before calculating, need first level sensor and pressure transducer to carry out the Accurate Calibration of initial position, especially pressure transducer is located at the bottom surface of storage tank, in actual installation process, tank elevation is generally 2.5 meters or 3.9 meters, and is all the oil tank of normal production and application, and environment for use is more severe, the initial position that is difficult to accurately aim at pressure transducer, has larger impact to follow-up computational accuracy.
Summary of the invention
The object of this invention is to provide a kind of profit containing method for measuring and calculating, to solve the problem of implementation that is difficult for of Accurate Calibration pressure transducer initial position in existing method.
For achieving the above object, profit of the present invention is as follows containing method for measuring and calculating technical scheme: before discharge opeing, obtain total liquid level h of oil mixing with water liquid in oil tank, the Drainage pipe that tank shell below arranges is apart from tank bottom height H; During discharge opeing, by the profit detector monitors accessing in Drainage pipe, when start oil extraction, and record while starting oil extraction liquid level h1 in oil tank simultaneously, according to formula c
water=(h-h1+H)/h calculates water percentage.
In oil tank, obtaining by liquid level sensor of liquid level obtains.
Drainage pipe is located at tank shell below and is referred to that the bottom surface of tank shell or below, side are near the position of bottom surface, H=0 when Drainage pipe is located at the bottom surface of tank shell.
When Drainage pipe is located at the position of close bottom surface, below, tank shell side, the liquid level of the water in the front oil tank of discharge opeing in oil mixing with water liquid is higher than the height of Drainage pipe.
Profit of the present invention is containing method for measuring and calculating, in Drainage pipe below oil tank, access profit detector, utilize profit density different, what first discharge is water, rear discharge be oil, utilize profit detector to monitor when draining, when oil extraction, detect oily innage simultaneously and change, calculate the size of water percentage in oil mixing with water liquid; This method only need to detect liquid level, while having avoided by pressure height hybrid measurement measuring and calculating oil-water ratio, need the requirement of the accurate check and correction of two kinds of sensors, strict conformance, greatly reduce sensor design difficulty, profit detector is installed simple, computing method are simple and easy to do, and degree of accuracy is high.
Embodiment
In order to measure the water percentage of oil mixing with water liquid in a specific volume, can in the Drainage pipe below oil tank, access profit detector, utilize profit density different, what first discharge is water, rear discharge oil, utilizes profit detector to differentiate when draining, when oil extraction, detect innage simultaneously and change, thereby calculate water percentage size.Specific volume can be existing storage tank, can be also specific measurement oil tank; In oil tank, obtaining by liquid level sensor of liquid level obtains, and liquid level sensor can be ultrasonic liquid level sensor, can be also pressure liquid level sensor, or the liquid level sensor of any other form; Drainage pipe is located at the position that tank shell below refers to the close bottom surface in bottom surface or below, side of tank shell, when Drainage pipe is located at the position of close bottom surface, below, tank shell side, the liquid level of the water in the front oil tank of discharge opeing in oil mixing with water liquid is higher than the height of Drainage pipe, when in mixed liquor, the ratio of water is very low, should reduce the height H of leakage fluid dram as far as possible, make H drop to negligible degree in actual use to the impact of liquid water content.
Concrete profit containing method for measuring and calculating is: before discharge opeing, obtain total liquid level h of oil mixing with water liquid in oil tank, the Drainage pipe that tank shell below arranges is apart from tank bottom height H; During discharge opeing, by the profit detector monitors accessing in Drainage pipe, when start oil extraction, and record while starting oil extraction liquid level h1 in oil tank simultaneously, according to formula c
water=(h-h1+H)/h calculates water percentage.
This method, when detecting profit detector, only needs the liquid level sensor of installation mensuration liquid level just passable, greatly reduces the accuracy requirement of sensor installation position, and profit detector is installed simple, and computing method are simple and easy to do, and degree of accuracy is high.
It should be noted last that: above embodiment is the non-limiting technical scheme of the present invention in order to explanation only, although the present invention is had been described in detail with reference to above-described embodiment, those of ordinary skill in the art is to be understood that; Still can modify or be equal to replacement the present invention, and not depart from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (4)
1. profit, containing method for measuring and calculating, is characterized in that: before discharge opeing, obtain total liquid level h of oil mixing with water liquid in oil tank, the Drainage pipe that tank shell below arranges is apart from tank bottom height H; During discharge opeing, by the profit detector monitors accessing in Drainage pipe, when start oil extraction, and record while starting oil extraction liquid level h1 in oil tank simultaneously, according to formula c
water=(h-h1+H)/h calculates water percentage.
2. profit according to claim 1, containing method for measuring and calculating, is characterized in that: in oil tank, obtaining by liquid level sensor of liquid level obtains.
3. profit according to claim 1 and 2 containing method for measuring and calculating, is characterized in that: Drainage pipe is located at tank shell below and is referred to that the bottom surface of tank shell or below, side are near the position of bottom surface, H=0 when Drainage pipe is located at the bottom surface of tank shell.
4. profit according to claim 3, containing method for measuring and calculating, is characterized in that: when Drainage pipe is located at the position of close bottom surface, below, tank shell side, the liquid level of the water in the front oil tank of discharge opeing in oil mixing with water liquid is higher than the height of Drainage pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310667853.6A CN104142390B (en) | 2013-12-10 | 2013-12-10 | Profit contains method for measuring and calculating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310667853.6A CN104142390B (en) | 2013-12-10 | 2013-12-10 | Profit contains method for measuring and calculating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104142390A true CN104142390A (en) | 2014-11-12 |
| CN104142390B CN104142390B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310667853.6A Active CN104142390B (en) | 2013-12-10 | 2013-12-10 | Profit contains method for measuring and calculating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109205131A (en) * | 2018-09-11 | 2019-01-15 | 高江江 | A kind of grease storage tank intelligent metering device and its calculation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2139766A (en) * | 1983-05-10 | 1984-11-14 | British Petroleum Co Plc | Measurement of water in crude oil |
| HU223277B1 (en) * | 1998-09-25 | 2004-04-28 | MOL Magyar Olaj- és Gázipari Rt. | Measuring method for sonically determining oil/water content, apparatus with a measuring cell for the carrying out of the method |
| CN102262036A (en) * | 2011-04-21 | 2011-11-30 | 西安石油大学 | Method and apparatus for measuring water and oil contents in oil tank |
| CN102284196A (en) * | 2011-06-13 | 2011-12-21 | 三一重工股份有限公司 | Drainage device, draining method and oil water separator for oil and water separation |
-
2013
- 2013-12-10 CN CN201310667853.6A patent/CN104142390B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2139766A (en) * | 1983-05-10 | 1984-11-14 | British Petroleum Co Plc | Measurement of water in crude oil |
| HU223277B1 (en) * | 1998-09-25 | 2004-04-28 | MOL Magyar Olaj- és Gázipari Rt. | Measuring method for sonically determining oil/water content, apparatus with a measuring cell for the carrying out of the method |
| CN102262036A (en) * | 2011-04-21 | 2011-11-30 | 西安石油大学 | Method and apparatus for measuring water and oil contents in oil tank |
| CN102284196A (en) * | 2011-06-13 | 2011-12-21 | 三一重工股份有限公司 | Drainage device, draining method and oil water separator for oil and water separation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109205131A (en) * | 2018-09-11 | 2019-01-15 | 高江江 | A kind of grease storage tank intelligent metering device and its calculation method |
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| CN104142390B (en) | 2016-08-17 |
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