CN102109372A - Measurement method of oil-water interface - Google Patents
Measurement method of oil-water interface Download PDFInfo
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- CN102109372A CN102109372A CN2011100241606A CN201110024160A CN102109372A CN 102109372 A CN102109372 A CN 102109372A CN 2011100241606 A CN2011100241606 A CN 2011100241606A CN 201110024160 A CN201110024160 A CN 201110024160A CN 102109372 A CN102109372 A CN 102109372A
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- oil
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- depth
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Abstract
The invention relates to a measurement method of an oil-water interface, which comprises the following steps: A, selecting a bipolar capacitance probe rod with a proper length according to the depth of an oil-water mixture to be measured and ensuring that the length of the bipolar capacitance probe rod is larger than or equal to the depth of the oil-water mixture; B, connecting the bipolar capacitance probe rod with a measurement circuit of the bipolar capacitance probe rod; C, using the bipolar capacitance probe rod to test the capacitance values of water and oil respectively; D, inserting the capacitance probe rod into the oil-water mixture to be measured to measure the capacitance value of the capacitance probe rod; and E, calculating the depth of the oil-water interface in the oil-water mixture to be measured through the following formula: Li=CmixKh/(Cw-Co), wherein Li is the depth of the oil-water interface, Cmix is the capacitance value of the oil-water mixture, Cw is the capacitance value of water, Co is capacitance value of oil, and Lh is the total depth of the oil-water mixture.
Description
Technical field
The present invention relates to the oil in a kind of profit blending agent storage tank, the measuring method of water termination, particularly use electric capacity to carry out the method for oil, water termination measurement.
Background technology
In petroleum industry, determine that oil, water termination are the problems that often runs in crude oil separation, storage process, owing to lack stabilizing effective measurement means all the time, in the large-scale slurry tank of multi-purpose station until also use now and manually drag for sample and survey oil, water termination, with the estimation oil reserve.Though developed multiple measuring method in decades, all there are various problems, all fail final oil, the accurate problems of measurement of water termination of solving.
Up to the present, measuring method oily, water termination has: resistance, capacitance switch method; Radio frequency admittance method, rays method, servo ball float and ball float Hall switch method etc.The shortcoming of resistance wherein, capacitance switch method is to carry out continuous coverage, and general is used as surface cock.The shortcoming of radio frequency admittance method is that measuring error is bigger.So rays method is because adopt radiomaterial to measure certain harm in the method, especially the health to the field personnel can cause damage, so do not receive an acclaim.The present application of ball float class is more, certain measuring accuracy is arranged after preparing volume mass, and still, in use for some time, the fouling of measuring on the slide bar is easy to stuck ball float, so need often cleaning to measure slide bar to guarantee measuring accuracy.
Present existing interface level measurement technology and product be because the restriction of technical difficulty, fails to satisfy fully the demand of petroleum industry so far, the electric capacity water-oil interface measuring technique of a practicality of development, and the needs that satisfy petroleum industry are our targets.So, suddenly wait to develop a kind of easy to use, measurement result is accurate, to the harmless water-oil interface measuring method of operator's health.
Summary of the invention
At existing shortcoming in oil, water termination measuring method and the device in the prior art, the invention provides a kind of conveniently oil, water termination measuring method: the concrete measuring process of this method is:
A, select the bipolar electric capacity feeler lever of suitable length according to the degree of depth of oil to be measured, aqueous mixtures; Bipolar electric capacity feeler lever length preferably equals the degree of depth of oil, aqueous mixtures;
B, bipolar electric capacity feeler lever is linked to each other with its metering circuit;
C, the described bipolar electric capacity feeler lever of use be test water and oily capacitance respectively;
D, the electric capacity feeler lever inserted in oil to be measured, the aqueous mixtures capacitance of measuring oil, aqueous mixtures;
E, calculate the degree of depth of water-oil interface in oil to be measured, the aqueous mixtures by following formula:
L
?i?=?C
mix?L
h?/?(?C
w-?C
o)
Wherein, L
iBe the degree of depth of profit liquid level, C
MixBe the capacitance of oil, aqueous mixtures, C
wThe capacitance of water, C
oThe capacitance of oil, L
hThe total depth of oil, aqueous mixtures.
Further, bipolar electric capacity feeler lever length described in the described steps A is more than or equal to the degree of depth of oil, aqueous mixtures.
What further, among the described step B measurement of electric capacity is adopted is the capacitance measurement method of alternating current bridge.
Further, described step C specifically comprises the following steps:
C1, the selection water identical with water quality in oil to be measured, the aqueous mixtures are put into container, and mensuration electric capacity feeler lever all inserts the capacitance in this water, and the degree of depth that the electric capacity feeler lever is inserted in the water should be consistent with the degree of depth in being inserted into oil water mixture;
C2, the selection oil identical with oil in oil to be measured, the aqueous mixtures are put into container, and mensuration electric capacity feeler lever all inserts the capacitance in this oil, and the degree of depth that described electric capacity feeler lever is inserted in the oil should be consistent with the degree of depth in being inserted into oil water mixture.
Further, the described water among the described step C and described oil be with described oil, aqueous mixtures in water water and the oil identical with oil nature.
The present invention uses the mixing electric capacity of bipolar electrode electric capacity measuring staff continuous coverage liquid, does not have moving component, uses the grease that is not subjected to paying on the measuring staff to influence.Measuring accuracy is higher, and measurement result is stable.
Embodiment
The principle that oil among the present invention, water termination measuring method are mainly used is according to the difference between the specific inductive capacity of electric capacity bar in You Heshui, calculate by formula get final product fuel-displacedly, the water-oil interface position of water mixed liquid body.The specific inductive capacity of water approximates 80, and the specific inductive capacity of oil is about 2.2, and a bipolar electric capacity feeler lever is vertically inserted in the storage tank, and the bottom of the nearly storage tank of a termination of bipolar electric capacity bar is apart from storage tank bottom 20-50mm.Then, measure the mixing electric capacity on the feeler lever, can calculate the position of water-oil interface.
Step is specific as follows:
1, select the bipolar electric capacity feeler lever of suitable length according to the degree of depth of oil to be measured, aqueous mixtures, bipolar electric capacity feeler lever length should be more than or equal to the degree of depth of oil to be measured, aqueous mixtures.
2, bipolar electric capacity feeler lever is linked to each other with metering circuit, what among the present invention the measurement of electric capacity is adopted is the capacitance measurement method of alternating current bridge.
3, the selection water identical with water quality in oil to be measured, the aqueous mixtures is put into container, and mensuration electric capacity feeler lever inserts the capacitance in this water, and note: the degree of depth that the electric capacity feeler lever is inserted in the water should be consistent with the degree of depth in being inserted into oil water mixture.
4, the selection oil identical with oil in oil to be measured, the aqueous mixtures is put into container, and mensuration electric capacity feeler lever inserts the capacitance in this oil, and note: the degree of depth that the electric capacity feeler lever is inserted in the oil should be consistent with the degree of depth in being inserted into oil water mixture.
5, the electric capacity feeler lever is all inserted the capacitance of measuring the electric capacity bar in oil to be measured, the aqueous mixtures.
6, calculate: calculate the degree of depth fuel-displaced, water termination by following formula:
L
?i?=?C
mix?L
h?/?(?C
w-?C
o)
Wherein, L
iBe the degree of depth of profit liquid level, C
MixBe the capacitance of oil, aqueous mixtures, C
wThe capacitance of water, C
oThe capacitance of oil, L
hThe total depth of oil, aqueous mixtures.
The scope of application of the present invention is:
Measuring media: oil, water;
Interface scope: 0.5-15 rice;
Measuring error: less than ± 2%.
Use among the present invention disclosed method that the interface between oil in the oil water mixture and the water is measured, its measurement result is reliable and stable, and irrelevant with the temperature of medium, pressure, density, container shapes etc.Can be widely used in the industries such as oil.
Claims (5)
1. an oil, water termination measuring method is characterized by, the comprising the following steps: of this measuring method
A, select the bipolar electric capacity feeler lever of suitable length according to the degree of depth of oil to be measured, aqueous mixtures; Bipolar electric capacity feeler lever length preferably equals the degree of depth of oil, aqueous mixtures;
B, bipolar electric capacity feeler lever is linked to each other with its metering circuit;
C, the described bipolar electric capacity feeler lever of use be test water and oily capacitance respectively;
D, the electric capacity feeler lever is inserted in oil to be measured, the aqueous mixtures, measure the capacitance of electric capacity bar;
E, calculate in oil to be measured, the aqueous mixtures degree of depth of oil, water termination by following formula:
L
?i?=?C
mix?L
h?/?(?C
w-?C
o)
Wherein, L
iBe the degree of depth of profit liquid level, C
MixBe the capacitance of oil, aqueous mixtures, C
wThe capacitance of water, C
oThe capacitance of oil, L
hThe total depth of oil, aqueous mixtures.
2. according to measuring method described in the claim 1, it is characterized by, bipolar electric capacity feeler lever length described in the described steps A is more than or equal to the degree of depth of oil, aqueous mixtures.
3. according to measuring method described in the claim 1, it is characterized by, what among the described step B measurement of electric capacity is adopted is the capacitance measurement method of alternating current bridge.
4. according to measuring method described in the claim 1, it is characterized by, described step C specifically comprises the following steps:
C1, the selection water identical with water quality in oil to be measured, the aqueous mixtures are put into container, and mensuration electric capacity feeler lever inserts the capacitance in this water, and the degree of depth that the electric capacity feeler lever is inserted in the water should be consistent with the degree of depth in being inserted into oil water mixture;
C2, the selection oil identical with oil in oil to be measured, the aqueous mixtures are put into container, and mensuration electric capacity feeler lever all inserts the capacitance in this oil, and the degree of depth that described electric capacity feeler lever is inserted in the oil should be consistent with the degree of depth in being inserted into oil water mixture.
5. according to measuring method described in the claim 1, it is characterized by, the described water among the described step C and described oil be with described oil, aqueous mixtures in water water and the oil identical with oil nature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100241606A CN102109372A (en) | 2011-01-21 | 2011-01-21 | Measurement method of oil-water interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100241606A CN102109372A (en) | 2011-01-21 | 2011-01-21 | Measurement method of oil-water interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102109372A true CN102109372A (en) | 2011-06-29 |
Family
ID=44173590
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100241606A Pending CN102109372A (en) | 2011-01-21 | 2011-01-21 | Measurement method of oil-water interface |
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| Country | Link |
|---|---|
| CN (1) | CN102109372A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111522367A (en) * | 2020-05-26 | 2020-08-11 | 宝钢化工湛江有限公司 | Automatic drainage system of light oil |
| CN112650320A (en) * | 2020-11-30 | 2021-04-13 | 太极集团重庆涪陵制药厂有限公司 | Alcohol precipitation control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2132162Y (en) * | 1992-06-03 | 1993-05-05 | 中国石油化工总公司石家庄炼油厂 | Device for detecting interface between two liquid phases |
| CN1506666A (en) * | 2002-12-13 | 2004-06-23 | 上海特晟商贸有限公司 | Oil-water interface and oil surface measuring instrument |
| CN101509800A (en) * | 2009-03-23 | 2009-08-19 | 江苏工业学院 | Method for simultaneously detecting double liquid levels of oil and water |
-
2011
- 2011-01-21 CN CN2011100241606A patent/CN102109372A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2132162Y (en) * | 1992-06-03 | 1993-05-05 | 中国石油化工总公司石家庄炼油厂 | Device for detecting interface between two liquid phases |
| CN1506666A (en) * | 2002-12-13 | 2004-06-23 | 上海特晟商贸有限公司 | Oil-water interface and oil surface measuring instrument |
| CN101509800A (en) * | 2009-03-23 | 2009-08-19 | 江苏工业学院 | Method for simultaneously detecting double liquid levels of oil and water |
Non-Patent Citations (1)
| Title |
|---|
| 王毅,候解民,尚晨旭: "《电容式油水界面液位传感器的设计》", 《中国仪器仪表》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111522367A (en) * | 2020-05-26 | 2020-08-11 | 宝钢化工湛江有限公司 | Automatic drainage system of light oil |
| CN112650320A (en) * | 2020-11-30 | 2021-04-13 | 太极集团重庆涪陵制药厂有限公司 | Alcohol precipitation control method |
| CN112650320B (en) * | 2020-11-30 | 2022-05-31 | 太极集团重庆涪陵制药厂有限公司 | Alcohol precipitation control method |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110629 |