CN113884135B - Method, system and device for monitoring gas delivery - Google Patents
Method, system and device for monitoring gas delivery Download PDFInfo
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- CN113884135B CN113884135B CN202111148614.0A CN202111148614A CN113884135B CN 113884135 B CN113884135 B CN 113884135B CN 202111148614 A CN202111148614 A CN 202111148614A CN 113884135 B CN113884135 B CN 113884135B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 161
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000007789 gas Substances 0.000 claims description 42
- 238000007726 management method Methods 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 10
- 238000007405 data analysis Methods 0.000 claims description 4
- 239000002737 fuel gas Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000012806 monitoring device Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000010485 coping Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention provides a gas conveying monitoring method, a system and a device, wherein the method comprises the steps of acquiring real-time monitoring data of a gas conveying pipeline, wherein the real-time monitoring data comprise pipeline temperature data, pipeline pressure data and pipeline flow data; and comparing the real-time monitoring data with a preset threshold value, historical monitoring data and related monitoring data respectively to obtain the security level of the current monitoring point. According to the invention, the plurality of sensors are arranged on the gas pipeline to obtain the real-time monitoring data, and the real-time monitoring data are respectively compared with the preset threshold value, the historical monitoring data and the related monitoring data to obtain the safety level of the current monitoring point, the closing of the corresponding valve is controlled based on the safety level, and the maintenance personnel is informed in time, so that the risk of the gas pipeline is conveniently managed and controlled in time, and further loss is avoided.
Description
Technical Field
The invention relates to the technical field of gas pipeline maintenance, in particular to a gas conveying monitoring method, a gas conveying monitoring system and a gas conveying monitoring device.
Background
The coverage range of gas pipelines such as coal gas, natural gas and the like is wider and wider, and the gas has the characteristics of inflammability and explosiveness, so the safety and the maintenance of the pipelines are highly valued.
At present, the operation and safety monitoring of the fuel gas adopts a manual line inspection and manual control mode. The underground pipeline monitoring methods at home and abroad comprise an optical fiber leakage detection method, a negative pressure method, an infrasonic wave method, a radar method and the like, basically only the monitoring methods are adopted, no control means are adopted, the underground pipeline monitoring methods are easy to interfere with misinformation, and the accident scene is difficult to manage and control in time. Even if a situation is detected, it is difficult for pipeline maintenance personnel to arrive at the site at the first time due to various influencing factors, and serious losses are easily caused.
Disclosure of Invention
The invention provides a method, a system and a device for monitoring gas delivery, which are used for solving the problem of low timeliness of the existing control mode of a gas pipeline.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the first aspect of the invention provides a fuel gas delivery monitoring method, which comprises the following steps:
acquiring real-time monitoring data of a gas conveying pipeline, wherein the real-time monitoring data comprise pipeline temperature data, pipeline pressure data and pipeline flow data;
and comparing the real-time monitoring data with a preset threshold value, historical monitoring data and related monitoring data respectively to obtain the security level of the current monitoring point.
Further, the method comprises the following steps:
fault countermeasures are taken based on the safety level, including closing a valve and/or notifying an attendant.
Further, the closing valve is realized by a servo actuator.
Further, the method further comprises the following steps before the real-time monitoring data of the gas conveying pipeline are acquired:
setting an identity identification code for each gas conveying pipeline, and storing the identity identification code in a cloud and/or a monitoring platform; the identification code comprises a type code for representing the type of the pipeline, and the pipeline type comprises a main pipeline, a branch pipeline and a household pipeline.
Further, the method comprises the steps of:
configuring a character string for each gas conveying pipeline, adding the identification code into the character string, wherein the character string also comprises a preset threshold value of the current monitoring pipeline, a mean value and an extreme value of historical monitoring data, an alarm record and a feature code; the preset thresholds are respectively set based on the pipeline types, and the associated monitoring data are acquired through the feature codes.
Further, the security level of the current monitoring point is specifically:
correspondingly classifying the real-time monitoring data according to the pipeline type;
comparing the classified real-time monitoring data with the preset threshold value, and if the classified real-time monitoring data exceeds the preset threshold value, respectively sending out three-level early warning, two-level early warning and one-level early warning according to the pipeline types of the main pipeline, the branch pipeline and the household pipeline;
comparing the current monitoring data exceeding the preset threshold value with the extreme values of the historical monitoring data, and if the current monitoring data exceeds the preset number of extreme values in the current scene, adding a first early warning feature on the basis of the early warning level obtained in the last step.
Further, the process of obtaining the security level of the current monitoring point further includes:
when the current monitoring data exceeds a preset threshold value, screening out monitoring points which are the same as the feature codes of the current monitoring data, obtaining the monitoring data of the monitoring points, comparing the difference value of the monitoring data, and if the difference value exceeds the preset difference value threshold value, adding a second early warning feature on the basis of the obtained early warning level.
Further, the method further comprises an associated early warning mechanism, specifically:
when the household pipeline sends out an early warning prompt, a branch pipeline to which the household pipeline belongs and other household pipelines below the branch pipeline send out associated early warning;
when the branch pipeline sends out early warning prompt, the main pipeline of the branch pipeline and other branch pipelines below the main pipeline send out associated early warning.
A second aspect of the present invention provides a gas delivery monitoring system, the system comprising:
the information acquisition unit is used for acquiring real-time monitoring data of the gas conveying pipeline, wherein the real-time monitoring data comprise pipeline temperature data, pipeline pressure data and pipeline flow data;
and the data analysis unit is used for comparing the real-time monitoring data with a preset threshold value, historical monitoring data and related monitoring data respectively to obtain the security level of the current monitoring point.
The third aspect of the invention provides a gas conveying monitoring device, which comprises a monitoring management platform, a sensor and a database, wherein the sensor is used for collecting monitoring data of a gas conveying pipeline, sending the data to the monitoring management platform and storing the data in the database, the monitoring management platform is provided with the monitoring system, and the processing of the monitoring data by the monitoring management platform is stored in the database.
The monitoring system according to the second aspect of the present invention and the monitoring device according to the third aspect of the present invention can implement the methods according to the first aspect and the respective implementation manners of the first aspect, and achieve the same effects.
The effects provided in the summary of the invention are merely effects of embodiments, not all effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
1. according to the invention, the plurality of sensors are arranged on the gas pipeline to obtain the real-time monitoring data, and the real-time monitoring data are respectively compared with the preset threshold value, the historical monitoring data and the related monitoring data to obtain the safety level of the current monitoring point, the closing of the corresponding valve is controlled based on the safety level, and the maintenance personnel is informed in time, so that the risk of the gas pipeline is conveniently managed and controlled in time, and further loss is avoided.
2. For closing the valve, the servo actuating mechanism has small energy consumption and large torque, can realize long-distance rapid operation, adopts 24V solar power supply as driving energy, is low-voltage and safe and explosion-proof, and has compact structure, small volume and convenient installation.
3. In the analysis process of the safety level, when the current monitoring data exceeds a preset threshold value, the current monitoring data is further compared with the historical data and the associated monitoring data, the early warning level is subjected to refined processing, so that maintenance personnel can conveniently know the finer condition, and meanwhile the importance degree of related personnel on early warning is improved.
4. Each gas conveying pipeline is provided with a character string, and the character string records information such as a unique identification code, a preset threshold value, history monitoring data, alarm records, feature codes and the like of the pipeline, so that information tracing and rapid data processing are facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic flow chart of an embodiment of the method of the present invention;
FIG. 2 is a schematic diagram of an embodiment of the system of the present invention;
fig. 3 is a schematic view of the structure of an embodiment of the device according to the invention.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different structures of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted so as to not unnecessarily obscure the present invention.
As shown in fig. 1, the method for monitoring gas delivery provided by the embodiment of the invention comprises the following steps:
s1, acquiring real-time monitoring data of a gas conveying pipeline, wherein the real-time monitoring data comprise pipeline temperature data, pipeline pressure data and pipeline flow data;
s2, comparing the real-time monitoring data with a preset threshold value, historical monitoring data and associated monitoring data respectively to obtain the security level of the current monitoring point;
and S3, taking fault coping measures based on the safety level, wherein the fault coping measures comprise closing a valve and/or notifying an overhauling personnel.
One implementation manner of the embodiment of the invention is as follows: the method further comprises the following steps before acquiring the real-time monitoring data of the gas conveying pipeline:
configuring a character string for each gas conveying pipeline, wherein the character string comprises an identity identification code of the gas pipeline, a preset threshold value of the current monitoring pipeline, a mean value and an extreme value of historical monitoring data, an alarm record and a feature code; the preset thresholds are respectively set based on the pipeline types, and the associated monitoring data are acquired through the feature codes.
The identification code is stored in a database of the cloud and/or the monitoring platform; the identification code comprises a type code for representing the type of the pipeline, and the pipeline type comprises a main pipeline, a branch pipeline and a household pipeline.
The preset threshold is a representation value of different monitoring data, and if the monitoring data comprises a plurality of data such as pipeline temperature data, pipeline pressure data, pipeline flow data and the like, time is wasted and when comparison results of different data types are different one by one, further analysis is needed, if the comparison results of the temperature data are abnormal, and the pressure and flow data are normal, judgment results cannot be directly given, therefore, the monitoring data are subjected to weighted calculation to obtain a representative representation value, and compared with the preset threshold obtained in the same calculation mode, and the judgment results are quickly obtained.
The feature codes are obtained according to the pipeline type and analysis of historical data, and specifically comprise the following steps: and if the pipeline types are the same and the difference value of the historical data is within a preset range, the same feature codes are matched.
In step S1, real-time monitoring data of the gas pipeline are obtained by respectively setting a temperature sensor, a pressure sensor and a flow sensor at monitoring points of the gas pipeline. One or more monitoring points can be arranged on the same section of gas pipeline according to actual conditions.
In step S2, one implementation manner of obtaining the security level of the current monitoring point specifically includes:
correspondingly classifying the real-time monitoring data according to the pipeline type;
comparing the classified real-time monitoring data with the preset threshold value, and if the classified real-time monitoring data exceeds the preset threshold value, respectively sending out three-level early warning, two-level early warning and one-level early warning according to the pipeline types of the main pipeline, the branch pipeline and the household pipeline;
comparing the current monitoring data exceeding the preset threshold value with the extreme values of the historical monitoring data, and if the current monitoring data exceeds the preset number of extreme values in the current scene, adding a first early warning feature on the basis of the early warning level obtained in the last step.
In step S2, another implementation manner for obtaining the security level of the current monitoring point specifically includes:
when the current monitoring data exceeds a preset threshold value, screening out monitoring points which are the same as the feature codes of the current monitoring data, obtaining the monitoring data of the monitoring points, comparing the difference value of the monitoring data, and if the difference value exceeds the preset difference value threshold value, adding a second early warning feature on the basis of the obtained early warning level.
In step S2, the method further includes an association early warning mechanism, specifically: when the household pipeline sends out an early warning prompt, a branch pipeline to which the household pipeline belongs and other household pipelines below the branch pipeline send out associated early warning; when the branch pipeline sends out early warning prompt, the main pipeline of the branch pipeline and other branch pipelines below the main pipeline send out associated early warning.
In step S3, the closing valve is implemented by a servo actuator. The servo actuating mechanism has small energy consumption and large torque, and can realize long-distance rapid operation; the driving energy adopts a 24V solar power supply, and is low-voltage, safe and explosion-proof; compact structure, small volume and convenient installation.
In step S3, when notifying the maintainer, the early warning is simultaneously reported to the monitoring platform, and the related information in the character string is modified. The warning notification can include character string information, so that the warning details can be conveniently known by the maintainer.
According to one implementation mode of the embodiment of the invention, the position information is added in the identity identification code of the gas pipeline, so that when the early warning notification occurs, the maintainer nearest to the early warning point can be notified firstly based on the position information.
As shown in fig. 2, the embodiment of the invention further provides a gas delivery monitoring system, which comprises an information acquisition unit 1, a data analysis unit 2 and an early warning processing unit 3.
The information acquisition unit 1 is used for acquiring real-time monitoring data of the gas conveying pipeline, wherein the real-time monitoring data comprises pipeline temperature data, pipeline pressure data and pipeline flow data.
The data analysis unit 2 is configured to compare the real-time monitoring data with a preset threshold, historical monitoring data and associated monitoring data, respectively, to obtain a security level of the current monitoring point.
The pre-warning processing unit 3 takes fault countermeasures based on the safety level, including closing the valve and/or notifying an attendant.
As shown in fig. 3, the embodiment of the invention further provides a gas delivery monitoring device, which comprises a monitoring management platform, a sensor and a database, wherein the sensor is used for collecting monitoring data of a gas delivery pipeline and sending the data to the monitoring management platform and storing the data in the database, the monitoring management platform is provided with the monitoring system, and the processing of the monitoring data by the monitoring management platform is stored in the database.
In one implementation manner of the monitoring device, the monitoring device further comprises a cloud end connected with the monitoring management platform, and the cloud end is used for processing and storing data, so that the data processing efficiency is improved.
While the foregoing description of the embodiments of the present invention has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the invention, but rather, it is intended to cover all modifications or variations within the scope of the invention as defined by the claims of the present invention.
Claims (5)
1. A method for monitoring the delivery of fuel gas, said method comprising the steps of:
acquiring real-time monitoring data of a gas conveying pipeline, wherein the real-time monitoring data comprise pipeline temperature data, pipeline pressure data and pipeline flow data;
comparing the real-time monitoring data with a preset threshold value, historical monitoring data and related monitoring data respectively to obtain the security level of the current monitoring point;
the method further comprises the following steps before the real-time monitoring data of the gas conveying pipeline are acquired:
setting an identity identification code for each gas conveying pipeline, and storing the identity identification code in a cloud and/or a monitoring platform; the identification code comprises a type code for representing the type of the pipeline, wherein the pipeline type comprises a main pipeline, a branch pipeline and a household pipeline;
the method further comprises the steps of:
configuring a character string for each gas conveying pipeline, adding the identification code into the character string, wherein the character string also comprises a preset threshold value of the current monitoring pipeline, a mean value and an extreme value of historical monitoring data, an alarm record and a feature code; the preset thresholds are respectively set based on pipeline types, and the associated monitoring data are obtained through the feature codes;
the security level of the current monitoring point is specifically:
correspondingly classifying the real-time monitoring data according to the pipeline type;
comparing the classified real-time monitoring data with the preset threshold value, and if the classified real-time monitoring data exceeds the preset threshold value, respectively sending out three-level early warning, two-level early warning and one-level early warning according to the pipeline types of the main pipeline, the branch pipeline and the household pipeline;
comparing the current monitoring data exceeding the preset threshold value with the extreme values of the historical monitoring data, and if the current monitoring data exceeds the preset number of extreme values in the current scene, adding a first early warning feature on the basis of the early warning level obtained in the last step;
the process for obtaining the security level of the current monitoring point further comprises the following steps:
screening out monitoring points which are the same as the feature codes of the current monitoring data when the current monitoring data exceeds a preset threshold value, acquiring the monitoring data of the monitoring points, comparing the difference value of the monitoring data, and adding a second early warning feature on the basis of the obtained early warning level if the difference value exceeds the preset difference value threshold value;
the method also comprises an associated early warning mechanism, specifically comprising the following steps:
when the household pipeline sends out an early warning prompt, a branch pipeline to which the household pipeline belongs and other household pipelines below the branch pipeline send out associated early warning;
when the branch pipeline sends out early warning prompt, the main pipeline of the branch pipeline and other branch pipelines below the main pipeline send out associated early warning.
2. The gas delivery monitoring method of claim 1, further comprising the steps of:
fault countermeasures are taken based on the safety level, including closing a valve and/or notifying an attendant.
3. The gas delivery monitoring method of claim 2, wherein the shut-off valve is implemented by a servo actuator.
4. A gas delivery monitoring system for implementing the method of claim 1, the system comprising:
the information acquisition unit is used for acquiring real-time monitoring data of the gas conveying pipeline, wherein the real-time monitoring data comprise pipeline temperature data, pipeline pressure data and pipeline flow data;
and the data analysis unit is used for comparing the real-time monitoring data with a preset threshold value, historical monitoring data and related monitoring data respectively to obtain the security level of the current monitoring point.
5. The device is characterized by comprising a monitoring management platform, a sensor and a database, wherein the sensor is used for collecting monitoring data of a gas conveying pipeline, sending the data to the monitoring management platform and storing the data in the database, the monitoring system as claimed in claim 4 is arranged on the monitoring management platform, and the processing of the monitoring data by the monitoring management platform is stored in the database.
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| CN202111148614.0A CN113884135B (en) | 2021-09-28 | 2021-09-28 | Method, system and device for monitoring gas delivery |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2818842A1 (en) * | 2013-06-26 | 2014-12-31 | Co.L.Mar. S.R.L. | Method and system of acoustic monitoring for the detection of leaks in underwater structures containing a fluid under pressure |
| CN107504946A (en) * | 2017-08-24 | 2017-12-22 | 北京融通智慧科技有限公司 | The Excavation Settlement real-time monitoring system and monitoring method of wisdom building site control platform |
| US10114814B1 (en) * | 2015-09-28 | 2018-10-30 | NarrativeDX, Inc. | System and method for actionizing patient comments |
| CN112489402A (en) * | 2020-11-27 | 2021-03-12 | 罗普特科技集团股份有限公司 | Early warning method, device and system for pipe gallery and storage medium |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9781148B2 (en) * | 2008-10-21 | 2017-10-03 | Lookout, Inc. | Methods and systems for sharing risk responses between collections of mobile communications devices |
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- 2021-09-28 CN CN202111148614.0A patent/CN113884135B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2818842A1 (en) * | 2013-06-26 | 2014-12-31 | Co.L.Mar. S.R.L. | Method and system of acoustic monitoring for the detection of leaks in underwater structures containing a fluid under pressure |
| US10114814B1 (en) * | 2015-09-28 | 2018-10-30 | NarrativeDX, Inc. | System and method for actionizing patient comments |
| CN107504946A (en) * | 2017-08-24 | 2017-12-22 | 北京融通智慧科技有限公司 | The Excavation Settlement real-time monitoring system and monitoring method of wisdom building site control platform |
| CN112489402A (en) * | 2020-11-27 | 2021-03-12 | 罗普特科技集团股份有限公司 | Early warning method, device and system for pipe gallery and storage medium |
Non-Patent Citations (2)
| Title |
|---|
| 基于HSE与风险的城市燃气管道安全评估与管理;蒋漳河;;中国公共安全(学术版)(第01期);全文 * |
| 苏州燃气集团安全运营指挥系统设计与实现;翟曼玉;赵晓筠;李松伟;;城市燃气(第10期);全文 * |
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