CN106248169A - The measuring method of crude oil liquid level in a kind of outer floating roof crude oil storage tank - Google Patents
The measuring method of crude oil liquid level in a kind of outer floating roof crude oil storage tank Download PDFInfo
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- CN106248169A CN106248169A CN201510312131.8A CN201510312131A CN106248169A CN 106248169 A CN106248169 A CN 106248169A CN 201510312131 A CN201510312131 A CN 201510312131A CN 106248169 A CN106248169 A CN 106248169A
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Abstract
The present invention relates to crude oil storage tank level gauging field, disclosing the measuring method of crude oil liquid level in a kind of outer floating roof crude oil storage tank, the method includes: use zero point correction device (1) to measure the height difference H on the floating plate sample tap storage tank shell top corresponding with tank measurements pipe；Use floating plate liquid level calibrating installation (2) to measure the liquid level h at storage tank floating plate sample tap, calibrate liquid level h, the liquid level h ' after being calibrated by height difference H；The liquid level h1 of crude oil in the tank measurements pipe of employing metering device (3) measuring device；If | h '-h1 | is≤5mm, the liquid level h1 measured by employing metering device is as the liquid level of crude oil in storage tank；If | h '-h1 | is ＞ 5mm, using the liquid level h ' after calibration as the liquid level of crude oil in storage tank.The method can significantly reduce the error in dipping caused because of tank measurements blockage, it is possible to accurately measures the crude oil liquid level in External floating roof tank.
Description
Technical field
The present invention relates to crude oil storage tank level gauging field, in particular it relates to a kind of outer floating roof crude oil storage tank
The measuring method of interior crude oil liquid level.
Background technology
At present, outer floating roof crude oil storage tank is only capable of being carried out crude oil liquid level in storage tank by tank measurements pipe
Measure.But, being settled by crude oil heavy constituent and affected, storage tank bottom easily piles up a large amount of greasy filth and other are miscellaneous
Matter, causes the lower end opening blocking of tank measurements pipe so that the liquid level in tank measurements pipe with
In outer floating roof crude oil storage tank, the actual liquid level height of crude oil is inconsistent, causes error in dipping.
Therefore, research and develop and a kind of can accurately measure the method for crude oil liquid level in outer floating roof crude oil storage tank,
Practical operation is had important practical significance.
Summary of the invention
The invention aims to overcome and prior art is measured crude oil liquid level in outer floating roof crude oil storage tank
The defect of error in dipping is there is, it is provided that the survey of crude oil liquid level in a kind of outer floating roof crude oil storage tank time highly
Metering method, described method can significantly reduce the error in dipping caused because of tank measurements blockage, it is possible to essence
Really measure the crude oil liquid level in outer floating roof crude oil storage tank.
Therefore, to achieve these goals, the invention provides crude oil liquid in the outer floating roof crude oil storage tank of one
The measuring method of position height, said method comprising the steps of:
(1) storage tank shell top and the storage tank meter that zero point correction measurement device floating plate sample tap is corresponding is used
The height difference H on the storage tank shell top that buret is corresponding；
(2) floating plate liquid level calibrating installation is used to measure the liquid level h at storage tank floating plate sample tap, by step
Suddenly height difference H the calibration described liquid level h, the liquid level h ' after being calibrated of (1)；
(3) liquid level of crude oil in the tank measurements pipe of the described metering device of employing metering device measurement
h1；
(4) if | h '-h1 | is≤5mm, then the liquid level h1 measured by employing metering device is as storage tank
The liquid level of interior crude oil；If | h '-h1 | is ＞ 5mm, then by the liquid level h ' after calibration as in storage tank
The liquid level of crude oil.
When the method utilizing the present invention measures crude oil liquid level in outer floating roof crude oil storage tank, it is possible to effectively drop
The low error in dipping caused because of tank measurements blockage, it is possible to that accurately measures in outer floating roof crude oil storage tank is former
Oil liquid level height.And, the outer floating roof crude oil storage tank device structure that the method for the present invention uses is simple, side
Just operate.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Fig. 1 is that the stereochemical structure of the outer floating roof crude oil storage tank equipment of a kind of preferred implementation of the present invention is shown
It is intended to.
Fig. 2 is the structural representation of the outer floating roof crude oil storage tank equipment of a kind of preferred implementation of the present invention
Figure.
Description of reference numerals
1 zero point correction device；2 floating plate liquid level calibrating installations；3 metering devices.
Detailed description of the invention
Below in conjunction with Fig. 1-2, the detailed description of the invention of the present invention is described in detail.It should be appreciated that
Detailed description of the invention described herein is merely to illustrate and explains the present invention, is not limited to this
Bright.
As depicted in figs. 1 and 2, the invention provides the outer floating roof crude oil storage tank equipment of one, this equipment bag
Include:
Floating plate liquid level calibrating installation 2, for measuring the liquid level at storage tank floating plate sample tap；
Metering device 3, the liquid level in the tank measurements pipe measuring described metering device 3；
Zero point correction device 1, for measuring storage tank shell top corresponding to described floating plate sample tap and described
The difference in height on the storage tank shell top that tank measurements pipe is corresponding.
Present invention also offers the measuring method of crude oil liquid level, the party in a kind of outer floating roof crude oil storage tank
Method comprises the following steps:
(1) zero point correction device 1 is used to measure storage tank shell top corresponding to floating plate sample tap and storage tank
The height difference H on the storage tank shell top that gauge line is corresponding；
(2) use floating plate liquid level calibrating installation 2 to measure the liquid level h at storage tank floating plate sample tap, use
Height difference H the calibration described liquid level h, the liquid level h ' after being calibrated of step 1；
(3) metering device 3 is used to measure the liquid level of crude oil in the tank measurements pipe of described metering device 3
Highly h1；
(4) if | h '-h1 | is≤5mm, then the liquid level h1 measured by employing metering device 3 is as storage
The liquid level of crude oil in tank；If | h '-h1 | is ＞ 5mm, then using the liquid level h ' after calibration as storage tank
The liquid level of interior crude oil.
In the inventive method, in step (1), for zero point correction device 1, there is no particular limitation,
As long as the Tank that storage tank shell top corresponding to floating plate sample tap is corresponding with tank measurements pipe can be measured
The difference in height on wall top, under preferable case, zero point correction device 1 includes the graduated U-shaped of labelling
Pipe, the vertical pipe at U-tube two ends is fitted the floating plate sample tap Tank corresponding with tank measurements pipe respectively
Wall is vertically arranged, and the top of the vertical pipe at U-tube two ends is not less than the top of storage tank shell, enters one
Step is preferably not less than the gage zero of tank measurements pipe.It will be understood by those skilled in the art that in order to
Facilitating reading, the graduation mark of U-tube is not less than the top of storage tank shell, preferably not less than tank measurements pipe
Gage zero.In the case of it is therefore preferable that, the method measuring height difference H includes: by U-tube two
The vertical pipe of the end floating plate sample tap storage tank shell corresponding with tank measurements pipe of fitting respectively is vertically arranged,
And the top of the vertical pipe at U-tube two ends is not less than the top of storage tank shell, further much more desirably not less than
The gage zero of tank measurements pipe；In the vertical pipe of U-tube, it is filled with water, obtains U-tube respectively
The difference of the liquid level in the vertical pipe at two ends and corresponding tank skin tip height, thus obtain H.
In the inventive method, in order to measure the crude oil liquid level in outer floating roof crude oil storage tank more accurately,
Under preferable case, U-tube is n, and the vertical pipe of one end of described n U-tube is all fitted storage tank
The storage tank shell that gauge line is corresponding is vertically arranged, and the vertical pipe of the other end of described n U-tube is respectively
The storage tank shell that n the floating plate sample tap of fitting is corresponding is vertically arranged, wherein, n >=1, obtain n respectively
The difference of the residing height of the liquid level in the vertical pipe at U-tube two ends, the most described height difference H is n difference
The meansigma methods of value.It is further preferred that n is 2-4.The most preferably, laminating tank measurements pipe
The vertical pipe of one end of corresponding vertically disposed n the U-tube of storage tank shell is that identical one is vertical
Pipeline.Wherein, during described n floating plate sample tap can be the floating plate sample tap arranged on storage tank arbitrarily
N floating plate sample tap, in order to measure the crude oil liquid level in outer floating roof crude oil storage tank, institute more accurately
State n floating plate sample tap to be perfectly even distributed on storage tank floating plate.
In the inventive method, in step (2), floating plate liquid level calibrating installation 2 is the most particularly limited
It is fixed, as long as the liquid level at storage tank floating plate sample tap, under preferable case, floating plate liquid can be measured
Position calibrating installation 2 includes the measuring ruler can finely tuned in vertical height, measuring ruler laminating floating plate sample tap
Corresponding storage tank shell is vertically arranged, and one end of measuring ruler is arranged at floating plate sample tap, and measuring ruler
The height of the other end is not less than the top of storage tank shell, the further much more desirably not less than metering of tank measurements pipe
Zero point.In the case of it is therefore preferable that, the method measuring liquid level h includes: floating plate of being fitted by measuring ruler
The storage tank shell that sample tap is corresponding is vertically arranged, and one end of measuring ruler is arranged at floating plate sample tap, and meter
The height of the other end of gage is not less than the top of storage tank shell, further much more desirably not less than tank measurements pipe
Gage zero；Measuring ruler, U-tube and tank measurements pipe is utilized to obtain crude oil liquid level at floating plate sample tap
Vertical blank between the gage zero height of tank measurements pipe away from, and then obtain liquid level.
In the inventive method, under preferable case, the number of measuring ruler is n, wherein, n >=1；Further
Preferably, n is 2-4.
It will be understood by those skilled in the art that, when U-tube is n, the number of measuring ruler is also
N, and the floating plate sampling that the floating plate sample tap of n U-tube correspondence respectively is the most corresponding with n measuring ruler difference
Mouth is identical.
Specifically, measuring ruler, U-tube and tank measurements pipe is utilized to obtain crude oil liquid level at floating plate sample tap
Vertical blank between the gage zero height of tank measurements pipe away from, and then obtain liquid level method can
To include: by tank measurements pipe and the U-tube of setting, it is thus achieved that U-tube with tank measurements pipe phase
The scale that on corresponding one end vertical pipe, gage zero height with tank measurements pipe maintains an equal level mutually, and then obtain
U-tube other end vertical pipe on the scale that maintains an equal level mutually with the gage zero height of tank measurements pipe,
Then by described U-tube and the measuring ruler corresponding with identical floating plate sample tap obtain on measuring ruler with
The scale that the gage zero height of tank measurements pipe maintains an equal level mutually, and then obtain crude oil at described floating plate sample tap
Liquid level to the vertical blank between the gage zero height of tank measurements pipe away from s, it is known that the meter of tank measurements pipe
The amount elevation of zero point away from L, and then obtains liquid level h, h=L-s to the vertical blank between storage tank bottom.This
Skilled person it should be understood that when number n >=1 of n >=1, i.e. measuring ruler, for described
N measuring ruler, obtains the liquid level that each measuring ruler is measured respectively, and described liquid level h is n
The meansigma methods of liquid level.
In the inventive method, under preferable case, floating plate liquid level calibrating installation 2 also includes level indicator, level
For level between measuring ruler scale and tank skin top when instrument is arranged on measuring ruler for keeping reading.
It is further preferred that level indicator is horizon rule.In the case of it is therefore preferable that, measure the side of liquid level h
Method also includes: when level indicator being set for keeping reading on measuring ruler measuring ruler scale and tank skin top it
Between be level.It is further preferred that level indicator is horizon rule.
In the inventive method, calibrate liquid level h, the liquid level h ' after being calibrated by height difference H
Method known to those skilled in the art, such as may include that and obtain storage corresponding to tank measurements pipe
Height residing for tank tank skin top deducts the height residing for storage tank shell top corresponding to floating plate sample tap
Difference H ', then h '=H '+h.
In the inventive method, in step (3), crude oil in the tank measurements pipe of measuring device 3
The method of liquid level h1 is known to those skilled in the art, does not repeats them here.Under preferable case,
Metering device 3 is tank measurements pipe.
Embodiment
Hereinafter will be described the present invention by embodiment.In following example, as without saying especially
Bright, each device related to is related device commonly used in the art.
Embodiment 1
The present embodiment is the measurement side of crude oil liquid level in the outer floating roof crude oil storage tank that the present invention is described
Method.
As depicted in figs. 1 and 2, use during crude oil liquid level in floating roof crude oil storage tank outside measuring is outer floating
Top crude oil storage tank equipment includes: floating plate liquid level calibrating installation 2, for measuring at storage tank floating plate sample tap
Liquid level；Metering device 3, the liquid level in the tank measurements pipe of measuring device 3；
Zero point correction device 1, for measuring storage tank shell top corresponding to floating plate sample tap and tank measurements pipe pair
The difference in height on the storage tank shell top answered.
Wherein, zero point correction device 1 includes 3 graduated U-tube of labelling, described 3 U-shapeds
The vertical pipe of one end of pipe is an identical vertical pipe, and the storage tank that laminating tank measurements pipe is corresponding
Tank skin is vertically arranged, and the vertical pipe of the other end of described 3 U-tube is fitted the sampling of 3 floating plates respectively
Mouthful corresponding storage tank shell is vertically arranged, and the top of the vertical pipe at described 3 U-tube two ends all with
The gage zero of tank measurements pipe maintains an equal level, and described 3 floating plate sample taps are uniformly distributed on floating plate.
Wherein, floating plate liquid level calibrating installation 2 include 3 measuring rulers can finely tuned in vertical height and
For level between measuring ruler scale and tank skin top when being arranged on measuring ruler for keeping reading
Horizon rule, described 3 measuring rulers storage tank shell corresponding to 3 floating plate sample taps of fitting respectively is vertically arranged,
And floating plate sample tap corresponding to described 3 measuring rulers distinguish the most corresponding floating plate with described 3 U-tube
Sample tap is identical, and one end of described 3 measuring rulers is respectively arranged at described 3 floating plate sample taps, and
The height of the other end of described 3 measuring rulers is all fair with the gage zero of tank measurements pipe.
Wherein, metering device 3 is tank measurements pipe.
Wherein, the gage zero height of tank measurements pipe to the vertical blank between storage tank bottom away from for
23714mm.Vertical between the tank skin top of its vertical lower of the gage zero height of tank measurements pipe
Ullage is 1841mm.
When measuring crude oil liquid level in outer floating roof crude oil storage tank, in zero point correction device 1, it is filled with water,
Liquid level is made to be in U-tube vertical pipe.Obtain 3 corresponding with 3 floating plate sample taps respectively vertical
The difference (this difference is that vertical dimension is poor) of the liquid level in straight pipeline and corresponding tank skin tip height,
It is respectively 5mm, 7mm and 0mm, calculates the meansigma methods of 3 differences, for 4mm；With storage tank meter
Difference (this difference of liquid level in the vertical pipe that buret is corresponding and corresponding tank skin tip height
Poor for vertical dimension) it is 2mm.The height residing for storage tank shell top that i.e. tank measurements pipe is corresponding subtracts
Go difference H of the height residing for storage tank shell top that floating plate sample tap is corresponding ' for-2mm, (floating plate samples
The height difference H on mouthful storage tank shell top that corresponding storage tank shell top is corresponding with tank measurements pipe is
2mm)；Utilize 3 measuring rulers of floating plate liquid level calibrating installation 2, be arranged on measuring ruler for keeping
It is the horizon rule of level, zero point correction device 1 between measuring ruler scale and tank skin top during reading
3 U-tube and tank measurements pipe, obtain at 3 floating plate sample taps crude oil liquid level respectively to storage tank shell
The vertical blank on top, away from, respectively 3542mm, 3539mm and 3544mm, calculates 3 Ullages
Meansigma methods is 3542mm.Can obtain the liquid level h at storage tank floating plate sample tap is 18331mm, with height
Degree difference H calibrates liquid level h, and the liquid level h ' after being calibrated, for 18329mm；Use meter
The liquid level h1 of crude oil in the tank measurements pipe of amount device 3 measuring device 3, for 18325mm；
| h '-h1 | is 4mm, and the liquid level h1 measured by employing metering device 3 is as the liquid of crude oil in storage tank
Position height.
Embodiment 2
The present embodiment is the measurement side of crude oil liquid level in the outer floating roof crude oil storage tank that the present invention is described
Method.
As depicted in figs. 1 and 2, use during crude oil liquid level in floating roof crude oil storage tank outside measuring is outer floating
Top crude oil storage tank equipment includes: floating plate liquid level calibrating installation 2, for measuring at storage tank floating plate sample tap
Liquid level；Metering device 3, the liquid level in the tank measurements pipe of measuring device 3；
Zero point correction device 1, for measuring storage tank shell top corresponding to floating plate sample tap and tank measurements pipe pair
The difference in height on the storage tank shell top answered.
Wherein, zero point correction device 1 includes 2 graduated U-tube of labelling, described 2 U-shapeds
The vertical pipe of one end of pipe is an identical vertical pipe, and the storage tank that laminating tank measurements pipe is corresponding
Tank skin is vertically arranged, and the vertical pipe of the other end of described 2 U-tube is fitted the sampling of 2 floating plates respectively
Mouthful corresponding storage tank shell is vertically arranged, and the top of the vertical pipe at described 2 U-tube two ends all with
Corresponding storage tank shell top maintains an equal level, and described 2 floating plate sample taps are uniformly distributed on floating plate.
Wherein, floating plate liquid level calibrating installation 2 include 2 measuring rulers can finely tuned in vertical height and
For level between measuring ruler scale and tank skin top when being arranged on measuring ruler for keeping reading
Horizon rule, described 2 measuring rulers storage tank shell corresponding to 2 floating plate sample taps of fitting respectively is vertically arranged,
And floating plate sample tap corresponding to described 2 measuring rulers distinguish the most corresponding floating plate with described 2 U-tube
Sample tap is identical, and one end of described 2 measuring rulers is respectively arranged at described 2 floating plate sample taps, and
The height of the other end of described 2 measuring rulers all maintains an equal level with corresponding storage tank shell top.
Wherein, metering device 3 is tank measurements pipe.
Wherein, the gage zero height of tank measurements pipe to the vertical blank between storage tank bottom away from for
23714mm.Vertical between the tank skin top of its vertical lower of the gage zero height of tank measurements pipe
Ullage is 1841mm.
When measuring crude oil liquid level in outer floating roof crude oil storage tank, in zero point correction device 1, it is filled with water,
Liquid level is made to be in U-tube vertical pipe.Obtain 2 corresponding with 2 floating plate sample taps respectively vertical
The difference (this difference is that vertical dimension is poor) of the liquid level in straight pipeline and corresponding tank skin tip height,
It is respectively 6mm and 8mm, calculates the meansigma methods of 2 differences, for 7mm；With tank measurements pipe phase
(this difference is vertical to the corresponding liquid level in vertical pipe with the difference of corresponding tank skin tip height
Range difference) it is 4mm.The height residing for storage tank shell top that i.e. tank measurements pipe is corresponding deducts floating plate
Difference H of the height residing for storage tank shell top that sample tap is corresponding ' it is that (floating plate sample tap is corresponding for-3mm
The height difference H on the storage tank shell top corresponding with tank measurements pipe, storage tank shell top be 3mm)；Adopt
With 2 measuring rulers of floating plate liquid level calibrating installation 2, be arranged on measuring ruler for keeping reading time metering
It is 2 U-tube of the horizon rule of level, zero point correction device 1 between chi scale and tank skin top
With tank measurements pipe, obtain vertical to storage tank shell top of crude oil liquid level at 2 floating plate sample taps respectively
Ullage, respectively 3522mm and 3530mm, and then obtain respectively at 2 storage tank floating plate sample taps
Liquid level, respectively 18351mm and 18343mm, calculate the meansigma methods of 2 liquid levels, for
18347mm, this meansigma methods is the liquid level h at storage tank floating plate sample tap, calibrates by height difference H
Liquid level h, the liquid level h ' after being calibrated, for 18344mm；Metering device 3 is used to measure
The liquid level h1 of crude oil in the tank measurements pipe of metering device 3, for 18342mm；I.e. | h '-h1 | for
2mm, the liquid level h1 measured by employing metering device 3 is as the liquid level of crude oil in storage tank.
Embodiment 3
The present embodiment is the measurement side of crude oil liquid level in the outer floating roof crude oil storage tank that the present invention is described
Method.
As depicted in figs. 1 and 2, use during crude oil liquid level in floating roof crude oil storage tank outside measuring is outer floating
Top crude oil storage tank equipment includes: floating plate liquid level calibrating installation 2, for measuring at storage tank floating plate sample tap
Liquid level；Metering device 3, the liquid level in the tank measurements pipe of measuring device 3；
Zero point correction device 1, for measuring storage tank shell top corresponding to floating plate sample tap and tank measurements pipe pair
The difference in height on the storage tank shell top answered.
Wherein, zero point correction device 1 includes 1 graduated U-tube of labelling, described U-tube
The vertical pipe laminating storage tank shell corresponding to tank measurements pipe of one end is vertically arranged, described U-tube another
The storage tank shell that vertical pipe 1 floating plate sample tap of laminating of one end is corresponding is vertically arranged, and described U-shaped
The top of the vertical pipe at pipe two ends is all fair with the gage zero of tank measurements pipe.
Wherein, floating plate liquid level calibrating installation 2 include 1 measuring ruler can finely tuned in vertical height and
For level between measuring ruler scale and tank skin top when being arranged on measuring ruler for keeping reading
Horizon rule, the storage tank shell that described measuring ruler 1 floating plate sample tap of laminating is corresponding is vertically arranged, and described
The floating plate sample tap that floating plate sample tap that measuring ruler is corresponding is corresponding with described U-tube is identical, described measuring ruler
One end be arranged at described floating plate sample tap, and the height of the other end of described measuring ruler all with storage tank meter
The gage zero of buret maintains an equal level.
Wherein, metering device 3 is tank measurements pipe.
Wherein, the gage zero height of tank measurements pipe to the vertical blank between storage tank bottom away from for
23714mm.Vertical between the tank skin top of its vertical lower of the gage zero height of tank measurements pipe
Ullage is 1841mm.
When measuring crude oil liquid level in outer floating roof crude oil storage tank, in zero point correction device 1, it is filled with water,
Liquid level is made to be in U-tube vertical pipe.Obtain the liquid in the vertical pipe corresponding with floating plate sample tap
The difference (this difference is that vertical dimension is poor) of face height and corresponding tank skin tip height, for 7mm；With
The difference of the liquid level in the vertical pipe that tank measurements pipe is corresponding and corresponding tank skin tip height
(this difference is that vertical dimension is poor) is 1mm.Residing for the storage tank shell top that i.e. tank measurements pipe is corresponding
Height deduct difference H of the height residing for storage tank shell top corresponding to floating plate sample tap ' for-6mm
(the height on the storage tank shell top that storage tank shell top that floating plate sample tap is corresponding is corresponding with tank measurements pipe
Degree difference H is 6mm)；Use floating plate liquid level calibrating installation 2 measuring ruler, be arranged on measuring ruler for
It is the horizon rule of level, zero point correction device between measuring ruler scale and tank skin top during holding reading
The U-tube of 1 and tank measurements pipe, it is thus achieved that crude oil liquid level hanging down to storage tank shell top at floating plate sample tap
Straight Ullage, for 3561mm, and then obtains the liquid level h at this storage tank floating plate sample tap, for
18312mm, calibrates liquid level h, the liquid level h ' after being calibrated by height difference H, for
18306mm；The liquid level of crude oil in the tank measurements pipe of employing metering device 3 measuring device 3
H1, for 18298mm；| h '-h1 | is 8mm, using the liquid level h ' after calibration as crude oil in storage tank
Liquid level.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited to above-mentioned reality
Execute the detail in mode, in the technology concept of the present invention, can be to the technical side of the present invention
Case carries out multiple simple variant, and these simple variant belong to protection scope of the present invention.
It is further to note that each the concrete technology described in above-mentioned detailed description of the invention is special
Levy, in the case of reconcilable, can be combined by any suitable means, in order to avoid need not
The repetition wanted, various possible compound modes are illustrated by the present invention the most separately.
Additionally, combination in any can also be carried out between the various different embodiment of the present invention, as long as its
Without prejudice to the thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. the measuring method of crude oil liquid level in an outer floating roof crude oil storage tank, it is characterised in that institute
The method of stating comprises the following steps:
(1) zero point correction device (1) is used to measure storage tank shell top corresponding to floating plate sample tap and storage
The height difference H on the storage tank shell top that tank gauge line is corresponding；
(2) floating plate liquid level calibrating installation (2) is used to measure the liquid level h at storage tank floating plate sample tap,
Described liquid level h, the liquid level h ' after being calibrated is calibrated by the height difference H of step (1)；
(3) metering device (3) is used to measure crude oil in the tank measurements pipe of described metering device (3)
Liquid level h1；
(4) if | h '-h1 | is≤5mm, then the liquid level h1 conduct that metering device (3) is measured will be used
The liquid level of crude oil in storage tank；If | h '-h1 | is ＞ 5mm, then using the liquid level h ' after calibration as storage
The liquid level of crude oil in tank.
Method the most according to claim 1, wherein, in step (1), described zero point correction fills
Put (1) and include that the graduated U-tube of labelling, the method for described measurement height difference H include: by described
The vertical pipe at U-tube two ends described floating plate sample tap of fitting respectively is corresponding with described tank measurements pipe
Storage tank shell is vertically arranged, and the top of the vertical pipe at described U-tube two ends is not less than storage tank shell
Top, the preferably not less than gage zero of tank measurements pipe；Water it is filled with in the vertical pipe of U-tube,
Obtain the difference of the liquid level in the vertical pipe at U-tube two ends and corresponding tank skin tip height respectively
Value, thus obtain H.
Method the most according to claim 2, wherein, described U-tube is n, described n
The vertical pipe of one end of U-tube storage tank shell corresponding to described tank measurements pipe of all fitting is vertically arranged,
The vertical pipe of the other end of described n U-tube is fitted Tank corresponding to n floating plate sample tap respectively
Wall is vertically arranged, wherein, and n >=1；Described height difference H is the meansigma methods of n difference.
Method the most according to claim 3, wherein, n is 2-4.
Method the most according to claim 3, wherein, the storage that described laminating tank measurements pipe is corresponding
The vertical pipe of one end of vertically disposed n the U-tube of tank tank skin is an identical vertical pipe.
6. according to the method described in any one in claim 2-5, wherein, in step (2), institute
State the measuring ruler that floating plate liquid level calibrating installation (2) includes to finely tune in vertical height, described measurement
The method of liquid level h includes: the storage tank shell that described floating plate sample tap of being fitted by described measuring ruler is corresponding
Being vertically arranged, one end of described measuring ruler is arranged at described floating plate sample tap, and described measuring ruler is another
The height of one end is not less than the top of storage tank shell, the preferably not less than gage zero of tank measurements pipe；Profit
Crude oil liquid level is obtained at described floating plate sample tap to tank measurements with measuring ruler, U-tube and tank measurements pipe
Vertical blank between the gage zero height of pipe away from, and then obtain liquid level.
Method the most according to claim 6, wherein, the number of described measuring ruler is n, and for
Described n measuring ruler, obtains the liquid level that each measuring ruler is measured respectively, and described liquid level h is
The meansigma methods of n liquid level.
Method the most according to claim 6, wherein, the method for described measurement liquid level h is also
Including: when level indicator being set for keeping reading on measuring ruler between measuring ruler scale and tank skin top be
Level.
Method the most according to claim 8, wherein, described level indicator is horizon rule.
Method the most according to claim 1, wherein, described metering device (3) is storage tank meter
Buret.
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| CN103885467A (en) * | 2012-12-21 | 2014-06-25 | 罗斯蒙特储罐雷达股份公司 | Identifying Undesired Conditions In The Function Of A Floating Roof Of A Tank |
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| US3085434A (en) * | 1958-11-19 | 1963-04-16 | Texas Instruments Inc | Floating roof tank gauge |
| WO1994026627A1 (en) * | 1993-05-17 | 1994-11-24 | Cbi Engineering A/S | A method and a monitoring system for monitoring the inclination of a floating roof |
| WO2008010702A1 (en) * | 2006-07-18 | 2008-01-24 | Enraf B.V. | Storage tank for a liquid |
| CN103105211A (en) * | 2011-11-11 | 2013-05-15 | 罗斯蒙特储罐雷达股份公司 | Monitoring of floating roof tank |
| CN103885467A (en) * | 2012-12-21 | 2014-06-25 | 罗斯蒙特储罐雷达股份公司 | Identifying Undesired Conditions In The Function Of A Floating Roof Of A Tank |
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| CN106248169B (en) | 2019-03-22 |
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