CN114493927A - Method for guaranteeing safe operation of gas by setting flow increment forbidden interval - Google Patents
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 230000002159 abnormal effect Effects 0.000 claims abstract description 11
- 238000004458 analytical method Methods 0.000 claims abstract description 4
- 238000010801 machine learning Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 101000983970 Conus catus Alpha-conotoxin CIB Proteins 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 22
- 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
- 239000002737 fuel gas Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- G06Q50/06—Energy or water supply
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
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- 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
- G01F15/063—Indicating or recording devices for remote indication using electrical means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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Abstract
The invention provides a method for guaranteeing safe operation of gas by setting a flow increment forbidden interval, belonging to the field of gas safety control and specifically comprising the following steps of: s1.1: acquiring a flow increment interval of a user through flow data acquisition and long-time machine learning, establishing a white list for the flow increment, and defining the interval which cannot be covered by the flow increment as a flow increment forbidden interval to be extracted; s1.2: and issuing the refined flow increment forbidden interval to the terminal metering equipment, carrying out safety control on the abnormal flow increment on the table by the terminal metering equipment through intelligent monitoring and analysis, monitoring the size of the flow increment in real time, closing air supply once the flow increment is found to fall into the flow increment forbidden interval, and reporting the abnormal flow increment. 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 a gas safety management and control system.
Description
Technical Field
The invention relates to a gas safe operation method, in particular to a method for guaranteeing gas safe operation by setting a flow increment forbidden interval.
Background
With the popularization of natural gas in urban residents' life, the safety of natural gas use is an important issue due to its flammable and explosive characteristics. At present, the mode of regular inspection is generally adopted to reduce the harm caused by gas leakage, but the inspection work wastes time and labor, and due to the periodicity, the leakage cannot be found in time, and once the leakage is not found in time, huge losses are brought to users and public safety.
Disclosure of Invention
The invention provides a method for guaranteeing safe operation of gas by setting a flow increment forbidden interval, which can timely find abnormal flow, timely block gas supply and reduce gas leakage risk, 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 safe operation of the gas by setting the flow increment forbidden interval comprises the following specific steps:
s1.1: acquiring a flow increment interval of a user through flow data acquisition and long-time machine learning, establishing a white list for the flow increment, and defining the interval which cannot be covered by the flow increment as a flow increment forbidden interval to be extracted;
s1.2: and issuing the refined flow increment forbidden interval to the terminal metering equipment, carrying out safety control on the abnormal flow increment on the table by the terminal metering equipment through intelligent monitoring and analysis, monitoring the size of the flow increment in real time, closing air supply once the flow increment is found to fall into the flow increment forbidden interval, and reporting the abnormal flow increment.
Preferably, the method for collecting the flow data comprises the following steps:
s2.1: mounting magnetic steel on a first output character wheel of the gas meter, arranging a Hall switch in front of the character wheel on which the magnetic steel is mounted, and recording pulse times;
s2.2: setting a pulse time interval output by one rotation, and setting the pulse time interval as t seconds, wherein the flow q = (a/t) × 3600, the q unit is m/h, and a is the gear coefficient of the membrane type gas meter;
s2.3: setting the flow increment qIncreaseCurrent non-zero flow-historical recent non-zero flow, only positive values are retained.
Preferably, the flow increment forbidden interval can be automatically generated by a local custom algorithm of the intelligent diaphragm gas meter, and the specific method is as follows:
s3.1: establishing a limited judging interval for the flow increment, monitoring the flow increment, and when the flow increment is qIncreaseWhen the flow rate falls into a certain judgment interval, the flow rate increment q is takenIncreaseThe minimum value and the maximum value in the interval are taken as qmin and qmax of the interval;
s3.2: if the flow rate increases qIncreaseIf no data falls into a certain judgment interval, the interval does not exist;
s3.3: after iteration within a certain time, sorting the obtained qmin and qmax of each judgment interval, if the qmin of the next interval minus the qmax of the previous interval is greater than 0.5, establishing an open interval (qmax, qmin) as a flow increment forbidden interval in the method, and so on, and obtaining all the flow increment forbidden intervals.
Preferably, the traffic increment forbidden interval may be generated at the cloud end through a cloud service platform, that is: the flow of the meter is obtained in a certain period, the flow data are uploaded to a cloud server through the Internet of things, and a traffic prohibited interval is refined on the cloud server, and the method specifically comprises the following steps:
s4.1: taking flow data of limited days, arranging the flow data according to a time sequence, making a difference between adjacent flow data, discarding a negative value, only keeping a positive value, adding an element C1.2 to generate a difference set, wherein C is the measuring range of the meter;
s4.2: if blank length larger than 0.5 m/h exists between elements of the difference value set, if E1 is set as the minimum value in the blank length, F1 is the maximum value in the blank length, the open interval (E1, F1) is a traffic increment forbidden interval in the method, and so on, all traffic increment forbidden intervals are obtained and are sent to a meter for forbidden management of traffic increments.
Preferably, the traffic increment forbidden interval can be set by a user according to the equipment condition, and the self-set traffic increment forbidden interval has priority.
The invention has the beneficial effects that:
(1) by setting a flow increment forbidden interval, the table end carries out safety control on the abnormal flow increment, when the flow increment falls into the flow increment forbidden interval, the gas supply is closed, and the abnormal flow increment is reported, so that the operation safety of the gas is ensured;
(2) the obtained flow increment forbidden interval can be automatically generated through a local self-defined algorithm of the intelligent diaphragm gas meter, can also be generated at the cloud end through a cloud service platform, and can also be set by a user according to the equipment condition, the priority of the flow increment forbidden interval set by the user is higher than that of 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.
A method for guaranteeing safe operation of fuel gas by setting a flow increment forbidden interval is based on the technology of Internet of things, the flow increment interval of a user is obtained through flow data acquisition and long-time machine learning, a white list is established for the flow increment, and the interval which cannot be covered by the flow increment is defined as the flow increment forbidden interval; the refined flow increment forbidden interval is issued to the terminal metering equipment, the terminal metering equipment refuses the flow increment to enter the forbidden interval through intelligent monitoring and analysis, and therefore the operation safety of the fuel gas is guaranteed.
The method for acquiring the flow data comprises the following steps: mounting magnetic steel on a first output character wheel of the gas meter, arranging a Hall switch in front of the character wheel on which the magnetic steel is mounted, and recording pulse times; setting a pulse time interval output by one rotation, and setting the pulse time interval as t seconds, wherein the flow rate q = (a/t) × 3600, wherein the q unit is mthe year/h, and a is the gear coefficient of the membrane gas meter; setting the flow increment qIncreaseCurrent non-zero flow-historical recent non-zero flow, only positive values are retained.
Through the hardware resources, the intelligent diaphragm gas meter can automatically generate a flow increment forbidden interval locally through a custom algorithm, and the method comprises the following steps:
(1) a plurality of decision intervals are established for the flow increment, for example five: (0, 0.6), [0.6, 1.2), [1.2, 2.4), [2.4, 3.6), [3.6, 4.8), the flow increase is monitored when the flow increase q is reachedIncreaseWhen falling into a certain interval, the flow is takenIncrement qIncreaseThe minimum value and the maximum value in the interval are taken as qmin and qmax of the interval;
(2) if no data falls into a certain interval, the interval does not exist; after iteration of a certain time, for example, 14 days, sorting qmin and qmax obtained from each interval, if qmin of the next interval minus qmax of the previous interval is greater than 0.5, establishing an open interval (qmax, qmin) as a traffic increment forbidden interval in the method, and so on, obtaining all traffic increment forbidden intervals.
The traffic increment forbidden interval can also be generated at the cloud end through a cloud service platform; the method comprises the following steps of obtaining flow of a meter at a certain period (for example, once every 2 min), uploading flow data to a cloud server through the Internet of things, and refining a flow increment forbidden interval on the cloud server, wherein the method comprises the following steps:
taking 14 days of flow data, arranging according to a time sequence, making a difference between adjacent points, discarding a negative value, only keeping a positive value, adding an element C1.2 to generate a difference set, wherein C is the measuring range of the meter; if a blank length greater than 0.5 m/h exists between elements of the difference set, if E1 is the minimum value in the blank length, F1 is the maximum value in the blank length, the open interval (E1, F1) is a traffic increment forbidden interval in the method, and so on, all traffic increment forbidden intervals are obtained, and the traffic increment forbidden intervals are sent to a table for forbidden management of traffic increments.
For example, the flow data of 14 days (which may be specifically set according to the application scenario) are arranged chronologically such that the flow is q1 ', q 2', q3 ',., qN', plus the element C1.2, the data between adjacent points are differenced, forming a difference set Δ q1 ', Δ q 2', and so on, and a Δ qN ', wherein Δ q1 = q 2' -q1 ', Δ q2 = q 3-q 2', and so on, and wherein C is the measurement range of the meter; if a blank length greater than 0.5 m/h exists between elements of the difference set, for example, Δ q2 ' - Δ q1 >0.5 m/h, then Δ q1 ' is a minimum value within the blank length, and Δ q2 ' is a maximum value within the blank length, then an open interval ([ delta ] q1, [ delta ] q2 ]) is a traffic-increment forbidden interval in the method, and so on, all traffic-increment forbidden intervals are obtained and are sent to a meter for forbidden management of traffic increments.
The flow increment forbidden interval can be set by a user according to the equipment condition, and the forbidden interval set by the user has priority.
And carrying out safety control on the abnormal flow increment on the table end, monitoring the size of the flow increment in real time, closing gas supply once the flow increment is found to fall into a flow increment forbidden interval, and reporting that the abnormal flow increment occurs or new equipment is added to the system. 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 flow increment forbidden interval.
Through flow increment monitoring, the sudden leakage accident in the use process can be effectively controlled.
The electromechanical conversion device (namely, the magnetic steel is arranged on the character wheel of the gas meter, and the Hall switch is arranged in front of the character wheel) is only an example, and a method for setting and refining forbidden intervals by using other electromechanical conversion devices or photoelectric conversion devices to obtain real-time flow 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 safe operation of gas by setting a flow increment forbidden interval is characterized by comprising the following steps:
s1.1: acquiring a flow increment interval of a user through flow data acquisition and long-time machine learning, establishing a white list for the flow increment, and defining the interval which cannot be covered by the flow increment as a flow increment forbidden interval to be extracted;
s1.2: and issuing the refined flow increment forbidden interval to the terminal metering equipment, carrying out safety control on the abnormal flow increment on the table by the terminal metering equipment through intelligent monitoring and analysis, monitoring the size of the flow increment in real time, closing air supply once the flow increment is found to fall into the flow increment forbidden interval, and reporting the abnormal flow increment.
2. The method for guaranteeing safe operation of gas by setting the flow increment forbidden interval according to claim 1, wherein the flow data acquisition method comprises the following steps:
s2.1: mounting magnetic steel on a first output character wheel of the gas meter, arranging a Hall switch in front of the character wheel on which the magnetic steel is mounted, and recording pulse times;
s2.2: setting a pulse time interval output by one rotation, and setting the pulse time interval as t seconds, wherein the flow rate q = (a/t) × 3600, wherein the q unit is mthe year/h, and a is the gear coefficient of the membrane gas meter;
s2.3: setting the flow increment qIncrease theCurrent non-zero flow-historical recent non-zero flow, only positive values are retained.
3. The method for guaranteeing safe operation of gas by setting the flow increment forbidden interval according to claim 2, wherein the flow increment forbidden interval can be automatically generated by a local custom algorithm of the intelligent diaphragm gas meter, and the specific method is as follows:
s3.1: establishing a limited judging interval for the flow increment, monitoring the flow increment, and when the flow increment is qIncreaseWhen the flow rate falls into a certain judgment interval, the flow rate increment q is takenIncreaseThe minimum and maximum values in this interval are taken as q of the intervalminAnd q ismax；
S3.2: if the flow rate increases qIncreaseIf no data falls into a certain judgment interval, the interval does not exist;
s3.3: after a certain time of iteration, obtaining the q of each judgment intervalminAnd q ismaxSorting, q of the next intervalminQ minus the preceding intervalmaxIf greater than 0.5, an open interval (q) is establishedmax，qmin) As a traffic increment violation interval in the method, according toAnd analogically, obtaining all traffic increment forbidden intervals.
4. The method for guaranteeing safe operation of gas by setting the flow increment forbidden interval according to claim 2, wherein the flow increment forbidden interval can be generated at a cloud end through a cloud service platform, namely: the flow of the meter is obtained in a certain period, the flow data are uploaded to a cloud server through the Internet of things, and a traffic prohibited interval is refined on the cloud server, and the method specifically comprises the following steps:
s4.1: taking flow data of limited days, arranging the flow data according to a time sequence, making a difference between adjacent flow data, discarding a negative value, only keeping a positive value, adding an element C1.2 to generate a difference set, wherein C is the measuring range of the meter;
s4.2: if blank length larger than 0.5 m/h exists between elements of the difference value set, if E1 is set as the minimum value in the blank length, F1 is the maximum value in the blank length, the open interval (E1, F1) is a traffic increment forbidden interval in the method, and so on, all traffic increment forbidden intervals are obtained and are sent to a meter for forbidden management of traffic increments.
5. The method for guaranteeing safe operation of gas by setting the flow increment forbidden interval according to claim 1, wherein the flow increment forbidden interval can be set by a user according to equipment conditions, and the self-set flow increment forbidden interval has priority.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210357001.6A CN114493927A (en) | 2022-04-07 | 2022-04-07 | Method for guaranteeing safe operation of gas by setting flow increment forbidden interval |
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| CN202210357001.6A CN114493927A (en) | 2022-04-07 | 2022-04-07 | Method for guaranteeing safe operation of gas by setting flow increment forbidden interval |
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-
2022
- 2022-04-07 CN CN202210357001.6A patent/CN114493927A/en active Pending
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Application publication date: 20220513 |