CN114673932A - Method for guaranteeing gas safety by setting flow forbidden interval - Google Patents
Method for guaranteeing gas safety by setting flow forbidden interval Download PDFInfo
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- CN114673932A CN114673932A CN202210360634.2A CN202210360634A CN114673932A CN 114673932 A CN114673932 A CN 114673932A CN 202210360634 A CN202210360634 A CN 202210360634A CN 114673932 A CN114673932 A CN 114673932A
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- interval
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- setting
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 230000002159 abnormal effect Effects 0.000 claims description 8
- 101000983970 Conus catus Alpha-conotoxin CIB Proteins 0.000 claims description 3
- 238000012163 sequencing technique Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 23
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 10
- 239000003345 natural gas Substances 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
- G01F15/061—Indicating or recording devices for remote indication
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention provides a method for guaranteeing gas safety by setting a flow forbidden interval, which comprises the following steps: (1) setting a common traffic interval as a white list and defining an unused traffic interval as a traffic forbidden interval according to a traffic usage rule of a user; (2) and issuing the flow forbidden interval to a terminal metering device, monitoring the flow in real time, immediately closing air supply once the real-time flow falls into the flow forbidden interval, and reporting the flow abnormity of the terminal. The natural gas leakage monitoring system solves the technical problems that leakage cannot be found in time and is effectively prevented and controlled in the use of the existing natural gas, and great potential safety hazards exist in the use of users. The invention can be widely applied to gas safety monitoring.
Description
Technical Field
The invention relates to a gas safety control technology, in particular to a method for guaranteeing gas safety by setting a flow forbidden interval.
Background
With the popularization of natural gas in the life of urban residents, the use safety of natural gas is an important issue due to the characteristics of flammability and explosiveness. At present, the mode of regularly patrolling and examining is generally adopted to reduce the harm that gas leakage caused, but the work of patrolling and examining wastes time and energy, and because it has periodicity, can't discover in time leaking, in case leak in time discovery will bring huge loss to user and public safety.
Disclosure of Invention
The invention provides a method for guaranteeing the safety of gas by setting a flow forbidden interval, which can timely find abnormal flow, timely block gas supply and reduce the risk of gas leakage, aiming at the technical problems that leakage cannot be timely found and effectively prevented and controlled in the use of the existing natural gas and a user has larger potential safety hazard in the use.
Therefore, the technical scheme of the invention is that the method for guaranteeing the gas safety by setting the flow forbidden interval specifically comprises the following steps:
(1) setting a common traffic interval as a white list and defining an unused traffic interval as a traffic forbidden interval according to a traffic usage rule of a user;
(2) and issuing the flow forbidden interval to terminal metering equipment, monitoring the flow in real time, immediately closing the air supply once the real-time flow falls into the flow forbidden interval, and reporting the flow abnormality of the terminal.
Preferably, the method for automatically generating the intelligent diaphragm gas meter locally is used for acquiring a flow forbidden interval, and specifically comprises the following steps:
(1) installing a magnetic block on a first output character wheel of the gas meter, arranging a Hall switch in front of the character wheel provided with the magnetic block, recording pulse times, setting a pulse time interval of outputting one pulse by one rotation, and setting the pulse time interval as t seconds, wherein the flow q is (a/t) × 3600, and the unit of q is m3The a is the gear coefficient of the gas meter;
(2) design the measuring range of the gauge as qMeasuring rangeEstablishing a decision interval [0, q ] for the flowMeasuring range*1.2]Dividing the judgment range into N intervals: (0, q1), (q2, q3)2(N-1)，qMeasuring range2), wherein q1 is q2 and q3 is q4.2(N-1)-1＝q2(N-1)；
(3) The interval in which the flow q does not fall is regarded as the absence of the interval; when the flow q falls into one of the intervals, taking the minimum value and the maximum value of the flow q in the interval as qmin and qmax of the interval; after a certain time of iteration, the qmin and qmax obtained in each interval are recorded as follows: (qmin0, qmax1), (qmin2, qmax3), (........ and) (qmin)2(N-1)，qmax2N-1) And sequencing all the recorded qmin and qmax to obtain a flow forbidden interval as follows: (0, qmin0), (qmax1, qmin2), … …, (qmax)2N-1，qMeasuring range*2)。
Preferably, the method for automatically generating the traffic forbidden interval on the cloud service platform by using the internet of things specifically comprises the following steps:
1) acquiring the flow of the meter at a fixed period, and uploading flow data to a cloud server;
2) the method comprises the steps of taking flow data of N days, sorting according to size, and after sorting, making difference values on data between adjacent points to form a difference value set;
3) setting the range of the meter as C, in the interval length of 0 to C1.2, if the elements in the difference set exist more than 0.5m3And setting A1 as the minimum value of the first section of blank interval and B1 as the maximum value of the first section of blank interval, wherein the open interval (A1 and B1) is the traffic forbidden interval of the system, and so on, marking all the traffic forbidden intervals, and issuing the traffic forbidden intervals to a meter for safety control of abnormal traffic by the meter.
Preferably, the fixed period for obtaining the flow of the meter is set as 2min, and the flow data of 14 days are taken for sequencing.
Preferably, the traffic forbidden interval can be set by the user according to the device condition, and the self-set forbidden interval has priority.
The beneficial effects of the invention are that,
(1) by setting the flow forbidden interval, the using flow intervals are far smaller than the forbidden flow interval, and once the flow size falls into the flow forbidden interval, the gas supply is immediately closed, so that the operation safety of the gas is guaranteed;
(2) the method for acquiring the flow forbidden interval can be used for automatically generating the flow forbidden interval locally through the intelligent diaphragm gas meter and automatically generating the flow forbidden interval on a cloud service platform through the Internet of things, a user can set the flow forbidden interval according to the equipment condition, the priority of the flow forbidden interval set by the user is higher than that of the flow forbidden interval set by the user in other modes, and the special requirements of the user can be met more conveniently and quickly.
Detailed Description
The present invention will be further described with reference to the following examples.
The utility model provides a method for guaranteeing gas safety through setting up flow forbidden interval, is based on internet of things, through flow data acquisition and long-time machine learning, obtains user's flow usage law, establishes the white list for the flow, defines the flow forbidden interval that does not use as the flow forbidden interval, issues the forbidden interval that refines to terminal metering equipment, and terminal metering equipment passes through intelligent monitoring and analysis, refuses the flow to get into forbidden interval, and then ensures the operation safety of gas.
The specific method comprises the following steps: installing a magnetic block on a first output character wheel of the gas meter, arranging a Hall switch in front of the character wheel, recording pulse times, and if one pulse time interval is output after one rotation and the pulse time interval is t seconds, then the flow q is (a/t) × 3600 (the unit is m)3And h), wherein a is the gear coefficient of the membrane gas meter. When the system is fixed, the legal flow range is also fixed, and the overflow range is defined as a flow forbidden interval. And carrying out safety control on the abnormal flow at the surface end, monitoring the flow in real time, immediately closing gas supply once the abnormal flow falls into a flow forbidden interval, and reporting the abnormal flow or adding new equipment to the system.
The flow forbidden interval can be automatically generated locally by the intelligent diaphragm gas meter through a custom function, and the method comprises the following steps:
1) design the measuring range of the gauge as qMeasuring rangeEstablishing a decision interval [0, q ] for the flowMeasuring range*1.2](ii) a Dividing the judgment range into N intervals: (0, q1), (q2, q3)2(N-1)，qMeasuring range2), wherein q1 ═ q2, q3 ═ q4.2(N-1)-1＝q2(N-1)For example, into three intervals, namely: (0, q1), (0, q1)q2，q3)，[q4，qMeasuring range*2)，q1＝q2，q3＝q4；
2) Monitoring real-time flow q of the meter, wherein an interval in which the flow q does not fall is regarded as not existing in the interval; when the flow q falls into one of the intervals, taking the minimum value and the maximum value of the flow q in the interval as qmin and qmax of the interval; after a certain time of iteration, for example, 14 days, the qmin and qmax obtained in each interval are recorded in turn as: (qmin0, qmax1), (qmin2, qmax3), (qmin4，qmax5) And sorts all qmin and qmax recorded, assuming qmin0<qmin2<qmin4, obtaining a traffic violation interval as: (0, qmin0), (qmax1, qmin2), (qmax3, qmin4), (qmax5, qMeasuring range*2)。
The traffic forbidden interval can also be automatically generated on a cloud service platform through the Internet of things, and the method comprises the following steps:
1) acquiring the flow of the meter at a certain period (for example, once every 2 min), and uploading the flow data to a cloud server through the Internet of things;
2) taking 14 days of flow data (which can be specifically set according to an application scene), sorting the flow data from small to large, and marking the flow data as q1 ', q 2', q3 ', 9.. till, making difference values on the data between adjacent points to form difference value sets delta q 1', delta q2 ', 9.. till, delta q (N-1)', wherein the delta q1 '. q 2' -q1 ', the delta q 2'. Q3 '-q 2', and the.
3) Setting the range of the meter as C, and judging whether the difference value set delta q (N-1)' is greater than the blank length of 0.5m within the interval length of 0 to C1.23H, if it is greater than the blank length of 0.5m3And h, determining the interval (q (N-1) ', qN') as an forbidden interval, and so on, marking all the flow forbidden intervals, and issuing the flow forbidden intervals to a meter for the meter to safely control the abnormal flow.
Such as: the first blank interval is (q1 ', q2 '), the second blank interval is (q2 ', q3 '), and the third blank interval is (q3 ', q4 '), if Δ q1 '>0.5, the open interval (q1 ', q 2') is the traffic forbidden interval of the system; if delta q 2'<0.5m3If the traffic interval is the white list of the traffic interval, the open interval (q2 ', q 3'); if it is△q3’>0.5m3And h, the open interval (q3 ', q 4') is the traffic forbidden interval of the system, and the like.
The traffic forbidden interval can be set by a user according to the equipment condition, and the forbidden interval set by the user has priority.
If the system is changed greatly, the method can be restarted by resetting the equipment to obtain a new forbidden interval, and the control is continued according to the new forbidden interval. Under general conditions, the used flow intervals are far smaller than forbidden flow intervals, and accidents caused by abnormal flow can be effectively controlled through forbidden control.
The electromechanical conversion device (namely, the magnet is arranged on the first output character wheel of the gas meter, and the Hall switch is arranged in front of the character wheel) is only an example, and other electromechanical conversion devices or photoelectric conversion devices are used for obtaining real-time flow to carry out the method for setting and refining forbidden intervals, and the method is also in the protection scope of the patent.
However, the above description is only exemplary of the present invention, and the scope of the present invention should not be limited thereby, and the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.
Claims (5)
1. A method for guaranteeing gas safety by setting a flow forbidden interval is characterized by comprising the following steps:
1.1) setting a common traffic interval as a white list according to a traffic usage rule of a user, and defining an unused traffic interval as a traffic forbidden interval;
1.2) issuing the flow forbidden interval to the terminal metering equipment, monitoring the flow in real time, immediately closing the gas supply once the real-time flow falls into the flow forbidden interval, and reporting the flow abnormity of the terminal.
2. The method for guaranteeing gas safety by setting the flow prohibited interval according to claim 1, wherein the flow prohibited interval is acquired by a method of automatically generating the intelligent membrane gas meter locally, specifically:
2.1) installing a magnetic block on a first output character wheel of the gas meter, arranging a Hall switch in front of the character wheel, recording pulse times, and if one pulse time interval is output after one rotation, and the pulse time interval is t seconds, then the flow q is (a/t) × 3600, and the q unit is m3The a is the gear coefficient of the gas meter;
2.2) design range of the calorimeter is qMeasuring rangeEstablishing a decision interval [0, q ] for the flowMeasuring range*1.2]Dividing the judgment range into N intervals: (0, q1), (q2, q3)2(N-1)，qMeasuring range2), wherein q1 ═ q2, q3 ═ q4.2(N-1)-1＝q2(N-1)；
2.3) the interval in which the flow q does not fall is regarded as the interval does not exist; when the flow q falls into one of the intervals, taking the minimum value and the maximum value of the flow q in the interval as qmin and qmax of the interval; after a certain time of iteration, the qmin and qmax obtained in each interval are recorded as follows: (qmin0, qmax1), (qmin2, qmax3), (........ and) (qmin)2(N-1)，qmax2N-1) And sequencing all the recorded qmin and qmax to obtain a flow forbidden interval as follows: (0, qmin0), (qmax1, qmin2), … …, (qmax)2N-1，qMeasuring range*2)。
3. The method for guaranteeing gas safety by setting the flow prohibited interval according to claim 1, wherein the flow prohibited interval is acquired by a method of automatically generating the flow prohibited interval on a cloud service platform through the internet of things, and specifically comprises:
3.1) acquiring the flow of the meter at a fixed period, and uploading flow data to a cloud server;
3.2) taking the flow data of N days, sorting according to size, and after sorting, performing difference on the data between adjacent points to form a difference set;
3.3) setting the range of the meter as C, in the interval length of 0 to C1.2, if the elements in the difference set exist more than 0.5m3The blank length of/h, if A1 is the minimum value of the first blank interval and B1 is the maximum value of the first blank interval, then the open intervalAnd (A1, B1) is the traffic prohibited interval of the system, and so on, all the traffic prohibited intervals are marked and sent to a meter for the meter to safely control the abnormal traffic.
4. The method for guaranteeing gas safety by setting flow forbidden intervals as claimed in claim 3, wherein the fixed period for obtaining meter flow is set as 2min, and 14 days of flow data are taken for sorting.
5. The method of claim 1, wherein the flow forbidden interval can be set by a user according to the device condition, and the forbidden interval set by the user has priority.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210360634.2A CN114673932A (en) | 2022-04-07 | 2022-04-07 | Method for guaranteeing gas safety by setting flow forbidden interval |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210360634.2A CN114673932A (en) | 2022-04-07 | 2022-04-07 | Method for guaranteeing gas safety by setting flow forbidden interval |
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| CN114673932A true CN114673932A (en) | 2022-06-28 |
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| CN202210360634.2A Pending CN114673932A (en) | 2022-04-07 | 2022-04-07 | Method for guaranteeing gas safety by setting flow forbidden interval |
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