CN108051044B - A kind of method that dynamic calculates liquefied natural gas fluid reservoir amount infused - Google Patents
A kind of method that dynamic calculates liquefied natural gas fluid reservoir amount infused Download PDFInfo
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- CN108051044B CN108051044B CN201711239882.7A CN201711239882A CN108051044B CN 108051044 B CN108051044 B CN 108051044B CN 201711239882 A CN201711239882 A CN 201711239882A CN 108051044 B CN108051044 B CN 108051044B
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 239000012530 fluid Substances 0.000 title claims abstract description 23
- 239000003949 liquefied natural gas Substances 0.000 title claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 259
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 20
- 238000005070 sampling Methods 0.000 claims abstract description 13
- 230000035611 feeding Effects 0.000 claims description 159
- 238000001802 infusion Methods 0.000 claims description 8
- 238000012163 sequencing technique Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 235000013399 edible fruits Nutrition 0.000 claims 1
- 230000002301 combined effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
The invention discloses the methods that a kind of dynamic of available practical amount infused calculates liquefied natural gas fluid reservoir amount infused, the steps include: 1) real-time sampling liquid level information, generate liquid level data；2) liquid level data is merged into polymerization liquid level data；3) will polymerization liquid level be incremented by, its whole process last > most short liquid feeding time, liquid volume added merge respectively divided by the liquid feeding amount of beginning > minimum liquid feeding percentage, liquid feeding speed > minimum liquid feeding speed polymerization liquid level data, generation liquid feeding records；4) if difference < liquid feeding of the final time stamp in last time liquid feeding record and the initial timestamp in this liquid feeding record records the largest interval time, and, the difference of last liquid level in last time liquid feeding record and the beginning liquid level in this liquid feeding record changes percentage divided by absolute value < maximum level of the last liquid level in last time liquid feeding record, then merging this, liquid feeding records twice；5) it is added respectively with the liquid outlet quantity of corresponding period, obtains the amount infused of each period.The purposes of this method is very extensive.
Description
Technical field
The present invention relates to one kind dynamically to calculate liquefied natural gas fluid reservoir during to LNG tank fluid infusion
The method of amount infused.
Background technique
Insider all know that being usually free of flowmeter during carrying out fluid infusion to liquified natural gas tank, being all
By the method for pound, come what is measured.Due to there is loss in practical fluid infusion and use process, by this method can not
Obtain accurate amount infused and waste.
Summary of the invention
The technical problems to be solved by the present invention are: the dynamic for providing a kind of available practical amount infused calculates liquefaction day
The method of right gas fluid reservoir amount infused.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows: a kind of dynamic calculating liquefied natural gas liquid storage
The method of tank amount infused, the steps include:
1) real-time sampling is used to store the liquid level information in the storage tank of liquefied natural gas, generates liquid level data, and save with
The corresponding timestamp of the liquid level data, sampling period are every two minutes no less than primary；
2) the liquid level data sequence generated according to time sequencing is merged into a polymerization liquid level according to every M liquid level data
The method of data generates polymerization liquid level data sequence, wherein the positive integer that M is >=2；
3) obtained polymerization liquid level data sequence is handled: by each section of polymer fluid in the polymerization liquid level data sequence
Position, which is all lasted in incremental, its whole process, is greater than minimum liquid feeding percentage divided by the liquid feeding amount of beginning greater than most short liquid feeding time, institute's liquid volume added
Merged respectively than the polymerization liquid level data that, liquid feeding speed is greater than minimum liquid feeding speed and with each section of initial timestamp and
Final time stamp generates liquid feeding record together, to form liquid feeding records series；
4) the liquid feeding records series obtained after step 3) merging are handled: adjacent liquid feeding twice is remembered
Record, if the difference of the final time stamp in preceding liquid feeding record and the initial timestamp in this liquid feeding record is remembered less than liquid feeding
It records the largest interval time, also, the difference of the last liquid level in preceding liquid feeding record and the beginning liquid level in this liquid feeding record
Value is less than maximum level divided by the absolute value of the last liquid level in preceding liquid feeding record and changes percentage, then by this liquid feeding twice
Record merges, after the final time stamp in initial timestamp and this liquid feeding record in preceding liquid feeding record is as merging
Initial timestamp and final time in liquid feeding record stab, in the beginning liquid level and this liquid feeding record in preceding liquid feeding record
Last liquid level respectively as after merging liquid feeding record in beginning liquid level and last liquid level；
5) according to by step 4) treated each liquid feeding record initial liquid level and last liquid level calculate separately out
Increasing liquid measure after each secondary fluid infusion, then respectively plus the liquid outlet quantity of corresponding period to get to the benefit on each period
Liquid measure；
The setting method of the most short liquid feeding time are as follows: the most short liquid feeding time will be set as 10 minutes first, operation one
After the section time, as the quantity N >=300 of liquid feeding record, the liquid feeding time in these liquid feedings record is analyzed, according to arranging from small to large
Column, if: X=[N × 5 ‰+0.5], i.e. X are obtained numerical value after the round of N × 5 ‰, if during X liquid feeding records
Liquid feeding time and current most short liquid feeding time phase difference≤0.5 minute will then subtract 0.5 minute the most short liquid feeding record time；Afterwards
It is continuous to repeat the above-mentioned setting method continuous renewal most short liquid feeding time；
The setting method of the minimum liquid feeding speed are as follows: the minimum liquid feeding speed be set as 0.02 millimeter of water/
Second, after running a period of time, as the quantity N >=300 of liquid feeding record, the liquid feeding speed in these liquid feedings record is analyzed, according to
It is arranged, if Y=[N × 99%+0.5], i.e. Y are the numerical value obtained after the round of N × 99%, is calculated from big to small
The average value V1, V1 for coming liquid feeding speed in the Y liquid feeding record of front out obtain V2 divided by 2, if V2 is greater than current minimum
Minimum liquid feeding speed is updated to V1 by liquid feeding speed V, otherwise, keeps initial value；It is subsequent to repeat above-mentioned setting method continuous renewal
Minimum liquid feeding speed；
The setting method for merging the liquid feeding record largest interval time are as follows: liquid feeding will be merged first and record largest interval
Time T is set as 20 minutes, and after running a period of time, as the quantity N >=300 of liquid feeding record, it is maximum will to merge liquid feeding record
Interval time, which temporarily adds, becomes T+1 for 1 minute, and goes to attempt to merge this N using this merging liquid feeding record largest interval time
Liquid feeding record will merge between liquid feeding record maximum if the quantity for the liquid feeding record that can succeed combineds is greater than N × 0.5%
It is updated to T+1 every the time, it is subsequent to repeat the above-mentioned setting method continuous renewal merging liquid feeding record largest interval time；
The minimum liquid feeding percentage is set as 5%；Merge liquid feeding record maximum level variation percentage to be set as
5%.
As a preferred embodiment, in the method that a kind of dynamic calculates liquefied natural gas fluid reservoir amount infused,
The sampling period is no less than once every minute.
As a preferred embodiment, in the method that a kind of dynamic calculates liquefied natural gas fluid reservoir amount infused,
The sampling period is no less than per minute twice.
As a preferred embodiment, in the method that a kind of dynamic calculates liquefied natural gas fluid reservoir amount infused,
The N selection range is between 8~20.
The beneficial effects of the present invention are: the present invention finds out various reality by all liquid level datas that analytical sampling obtains
The liquid feeding period, and liquified natural gas tank is eliminated during fluid infusion by the way that liquid level data is polymerize generation polymerization liquid level data
Level fluctuation, so as to obtain actual amount infused, and it can be compared with the amount infused to weigh,
Obtain the loss value during fluid infusion.
Specific embodiment
The method that a kind of dynamic of the present invention calculates liquefied natural gas fluid reservoir amount infused, the specific steps are that:
1) real-time sampling is used to store the liquid level information in the storage tank of liquefied natural gas, generates liquid level data, and save with
The corresponding timestamp of the liquid level data, sampling period are set as every two minutes no less than once, naturally it is also possible to according to reality
Situation will be adjusted to no less than primary per minute the sampling period or be no less than per minute twice；
2) the liquid level data sequence generated according to time sequencing is merged into a polymerization liquid level according to every M liquid level data
The method of data generates polymerization liquid level data sequence, wherein M is positive integer, and M is usually set as 10 by 8≤M≤20；
3) obtained polymerization liquid level data sequence is handled: by each section of polymer fluid in the polymerization liquid level data sequence
Position, which is all lasted in incremental, its whole process, is greater than minimum liquid feeding percentage divided by the liquid feeding amount of beginning greater than most short liquid feeding time, institute's liquid volume added
Merged respectively than the polymerization liquid level data that, liquid feeding speed is greater than minimum liquid feeding speed and with each section of initial timestamp and
Final time stamp generates liquid feeding record together, to form liquid feeding records series；
4) the liquid feeding records series obtained after step 3) merging are handled: adjacent liquid feeding twice is remembered
Record, if the difference of the final time stamp in preceding liquid feeding record and the initial timestamp in this liquid feeding record is remembered less than liquid feeding
It records the largest interval time, also, the difference of the last liquid level in preceding liquid feeding record and the beginning liquid level in this liquid feeding record
Value is less than maximum level divided by the absolute value of the last liquid level in preceding liquid feeding record and changes percentage, then by this liquid feeding twice
Record merges, after the final time stamp in initial timestamp and this liquid feeding record in preceding liquid feeding record is as merging
Initial timestamp and final time in liquid feeding record stab, in the beginning liquid level and this liquid feeding record in preceding liquid feeding record
Last liquid level respectively as after merging liquid feeding record in beginning liquid level and last liquid level；
5) according to by step 4) treated each liquid feeding record initial liquid level and last liquid level calculate separately out
Increasing liquid measure (specific calculation method belongs to the conventional techniques of this field, and details are not described herein) after each secondary fluid infusion, then, respectively
In addition the liquid outlet quantity of corresponding period is to get to the amount infused on each period；
The setting method of the most short liquid feeding time are as follows: the most short liquid feeding time will be set as 10 minutes first, operation one
After the section time, as the quantity N >=300 of liquid feeding record, the liquid feeding time in these liquid feedings record is analyzed, according to arranging from small to large
Column, if: X=[N × 5 ‰+0.5], i.e. X are obtained numerical value after the round of N × 5 ‰, if during X liquid feeding records
Liquid feeding time and current most short liquid feeding time phase difference≤0.5 minute will then subtract 0.5 minute the most short liquid feeding record time；Afterwards
It is continuous to repeat the above-mentioned setting method continuous renewal most short liquid feeding time；
The setting method of the minimum liquid feeding speed are as follows: the minimum liquid feeding speed be set as 0.02 millimeter of water/
Second, after running a period of time, as the quantity N >=300 of liquid feeding record, the liquid feeding speed in these liquid feedings record is analyzed, according to
It is arranged, if Y=[N × 99%+0.5], i.e. Y are the numerical value obtained after the round of N × 99%, is calculated from big to small
The average value V1, V1 for coming liquid feeding speed in the Y liquid feeding record of front out obtain V2 divided by 2, if V2 is greater than current minimum
Minimum liquid feeding speed is updated to V1 by liquid feeding speed V, otherwise, keeps initial value；It is subsequent to repeat above-mentioned setting method continuous renewal
Minimum liquid feeding speed；
The setting method for merging the liquid feeding record largest interval time are as follows: liquid feeding will be merged first and record largest interval
Time T is set as 20 minutes, and after running a period of time, as the quantity N >=300 of liquid feeding record, it is maximum will to merge liquid feeding record
Interval time, which temporarily adds, becomes T+1 for 1 minute, and goes to attempt to merge this N using this merging liquid feeding record largest interval time
Liquid feeding record will merge between liquid feeding record maximum if the quantity for the liquid feeding record that can succeed combineds is greater than N × 0.5%
It is updated to T+1 every the time, it is subsequent to repeat the above-mentioned setting method continuous renewal merging liquid feeding record largest interval time；
The minimum liquid feeding percentage is set as 5%；Merge liquid feeding record maximum level variation percentage to be set as
5%.
In conclusion only presently preferred embodiments of the present invention, is not used to limit the scope of implementation of the present invention, it is all according to
Equivalent changes and modifications made by shape described in scope of the invention as claimed, construction, feature and spirit should all be included in this
In the scope of the claims of invention.
Claims (4)
1. a kind of method that dynamic calculates liquefied natural gas fluid reservoir amount infused, the steps include:
1) real-time sampling is used to store the liquid level information in the storage tank of liquefied natural gas, generates liquid level data, and save and the liquid
The corresponding timestamp of position data, sampling period are every two minutes no less than primary；
2) the liquid level data sequence generated according to time sequencing is merged into a polymerization liquid level data according to every M liquid level data
Method generate polymerization liquid level data sequence, wherein M be >=2 positive integer；
3) obtained polymerization liquid level data sequence is handled: all by each section of polymerization liquid level in the polymerization liquid level data sequence
It is lasted in incremental, its whole process and is greater than minimum liquid feeding percentage divided by the liquid feeding amount of beginning greater than most short liquid feeding time, institute's liquid volume added, adds
The polymerization liquid level data that liquid speed degree is greater than minimum liquid feeding speed merge respectively and with each section of initial timestamp and it is last when
Between stab together generate liquid feeding record, to form liquid feeding records series；
4) the liquid feeding records series obtained after step 3) merging are handled: adjacent liquid feeding twice is recorded, such as
The difference of final time stamp before fruit in a liquid feeding record and the initial timestamp in this liquid feeding record is less than liquid feeding and records most
The large-spacing time, also, the difference of the last liquid level in preceding liquid feeding record and the beginning liquid level in this liquid feeding record is removed
The absolute value of the last liquid level in a liquid feeding record was less than maximum level variation percentage in the past, then by this, liquid feeding is recorded twice
Merge, the final time stamp in initial timestamp and this liquid feeding record in preceding liquid feeding record is as the liquid feeding after merging
Initial timestamp and final time in record stab, in the beginning liquid level and this liquid feeding record in preceding liquid feeding record most
Liquid level is respectively as the beginning liquid level and last liquid level in the liquid feeding record after merging afterwards；
5) according to by step 4) treated each liquid feeding record initial liquid level and last liquid level calculate separately out each time
Increasing liquid measure after fluid infusion, then respectively plus the liquid outlet quantity of corresponding period to get to the amount infused on each period；
The setting method of the most short liquid feeding time are as follows: the most short liquid feeding time will be set as 10 minutes first, when running one section
Between after, as the quantity N >=300 of liquid feeding record, analyze the liquid feeding time in these liquid feedings record, according to arranging from small to large,
If: X=[N × 5 ‰+0.5], i.e. X are obtained numerical value after the round of N × 5 ‰, if adding in X liquid feeding record
Liquid time and current most short liquid feeding time phase difference≤0.5 minute will then subtract 0.5 minute the most short liquid feeding record time；It is subsequent
It repeats above-mentioned setting method and constantly updates the most short liquid feeding time；
The setting method of the minimum liquid feeding speed are as follows: the minimum liquid feeding speed is set as 0.02 millimeter of water/second, fortune
After row a period of time, when liquid feeding record quantity N >=300 when, analyze these liquid feedings record in liquid feeding speed, according to from greatly to
It is small to be arranged, if Y=[N × 99%+0.5], i.e. Y are the numerical value obtained after the round of N × 99%, calculate and come
The average value V1, V1 of liquid feeding speed obtain V2 divided by 2 in the Y liquid feeding record of front, if V2 is greater than current minimum liquid feeding speed
V is spent, minimum liquid feeding speed is updated to V1, otherwise, keeps initial value；It is subsequent repeat above-mentioned setting method constantly update it is minimum plus
Liquid speed degree；
The setting method for merging the liquid feeding record largest interval time are as follows: liquid feeding will be merged first and record the largest interval time
T is set as 20 minutes, after running a period of time, as the quantity N >=300 of liquid feeding record, will merge liquid feeding and records largest interval
Time, which temporarily adds, becomes T+1 for 1 minute, and goes trial to merge this N item using this merging liquid feeding record largest interval time and add
Liquid record, if the quantity for the liquid feeding record that can succeed combined is greater than N × 0.5%, when will merge liquid feeding record largest interval
Between be updated to T+1, it is subsequent repeat above-mentioned setting method and constantly update merge the liquid feeding record largest interval time；
The minimum liquid feeding percentage is set as 5%；Merge liquid feeding record maximum level variation percentage and is set as 5%.
2. the method that dynamic according to claim 1 calculates liquefied natural gas fluid reservoir amount infused, which is characterized in that described
Sampling period no less than once every minute.
3. the method that dynamic according to claim 2 calculates liquefied natural gas fluid reservoir amount infused, which is characterized in that described
Sampling period no less than per minute twice.
4. the method that dynamic according to claim 1,2 or 3 calculates liquefied natural gas fluid reservoir amount infused, feature exist
In the M selection range is between 8~16.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201391742Y (en) * | 2009-04-14 | 2010-01-27 | 海南海然高新能源有限公司 | Energy-saving slid-mounted liquefied natural gas filling device |
| CN202988700U (en) * | 2012-11-10 | 2013-06-12 | 上海超日(洛阳)太阳能有限公司 | Liquid feeding device for liquid storage tank |
| CN106355462A (en) * | 2016-08-25 | 2017-01-25 | 李斌 | Liquefied gas management system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3693324B2 (en) * | 2001-10-30 | 2005-09-07 | ダイセル化学工業株式会社 | Sample moving device for simulated moving bed chromatography |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201391742Y (en) * | 2009-04-14 | 2010-01-27 | 海南海然高新能源有限公司 | Energy-saving slid-mounted liquefied natural gas filling device |
| CN202988700U (en) * | 2012-11-10 | 2013-06-12 | 上海超日(洛阳)太阳能有限公司 | Liquid feeding device for liquid storage tank |
| CN106355462A (en) * | 2016-08-25 | 2017-01-25 | 李斌 | Liquefied gas management system |
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