Wide-range greenhouse gas underway detection method suitable for leakage detection of gas company

Abstract

The invention relates to the technical field of greenhouse gas underway detection, and discloses a large-range greenhouse gas underway detection method suitable for leakage detection of a gas company, and the method comprises the following steps: S1, early-stage preparation; s2, performing field deployment; s3, underway monitoring is carried out; s4, data analysis; s5, confirming and repairing a leakage source; and S6, follow-up monitoring and rechecking are performed, rapid coverage of a large-range to-be-detected area is realized by adopting underway detection, so that a large amount of data is efficiently collected, the problem of non-uniform surface station distribution of a traditional detection method is solved, the concentration data of leaked gas is accurately detected through a mass spectrum underway monitoring system, and the detection accuracy is improved through continuous monitoring. The change trend of the leaked gas concentration along with time lapse can be displayed, and the accuracy of leaked gas detection is improved; and a repair scheme for the leakage source is formulated, the leakage source is repaired and registered in time, subsequent continuous monitoring is performed, and continuous and stable operation of the gas equipment is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of greenhouse gas cruise detection, and in particular to a large-scale greenhouse gas cruise detection method suitable for leak detection in gas companies. Background Art

[0002] Greenhouse gas cruise detection is a greenhouse gas emission monitoring method that combines mobile monitoring and real-time monitoring technology. Greenhouse gas cruise detection refers to the real-time monitoring and data collection of greenhouse gas emissions in a designated area by using a cruise monitoring vehicle or drone equipped with high-precision greenhouse gas monitoring equipment. This detection method can capture subtle changes in the concentration of greenhouse gases such as CO2 and CH4 in the atmosphere in real time, which is of great significance for the scientific assessment and source location of greenhouse gas emissions.

[0003] After searching, the patent with application number CN202321372551.1 discloses a vehicle-mounted greenhouse gas measuring device, including a monitoring component, a cavity component, a box component, and a control and analysis component; the monitoring component is connected to the cavity component, the box component is used to support the cavity component and the monitoring component, and the control and analysis component is arranged in the box component; the beneficial effect of the utility model is that the wind speed can be detected by the monitoring component, and the humidity of the gas and the current temperature can also be detected, the greenhouse gas content can be quickly analyzed by the control and analysis component, the monitoring component can be supported by the cavity component, and the control and analysis component can be conveniently stored and supported by the box component, so that rapid cruise monitoring over a large area can be carried out.

[0004] The traditional gas leak detection method chooses to set up detection sites on the ground. The artificial laying of detection sites has the problem of uneven distribution of sites, which makes greenhouse gas monitoring not comprehensive enough. In traditional gas leak detection, there are many human interference factors, and the authenticity and objectivity of data collection cannot be guaranteed. In addition, the leaked greenhouse gas will cause harm to the monitoring personnel. Therefore, we need to propose a large-scale greenhouse gas cruise detection method suitable for gas companies to detect leaks. Summary of the invention

[0005] The purpose of the present invention is to provide a large-scale greenhouse gas cruise detection method suitable for gas company leak detection, which adopts cruise detection to achieve rapid coverage of a large range of areas to be detected, thereby efficiently collecting a large amount of data and solving the problem of uneven distribution of surface sites in traditional detection methods. The mass spectrometry cruise monitoring system is used to accurately detect the concentration data of the leaked gas, and through continuous monitoring, the changing trend of the leaked gas concentration over time can be displayed, thereby improving the accuracy of leaked gas detection; reducing human interference factors during data monitoring, reducing potential risks to the safety of monitoring personnel, and ensuring the authenticity and objectivity of the collected data; and formulating a repair plan for the leak source, promptly repairing and registering the leak source, and carrying out subsequent continuous monitoring to ensure the continuous and stable operation of the gas equipment, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a large-scale greenhouse gas cruise detection method suitable for leak detection in gas companies, comprising the following steps:

[0007] S1. Preliminary preparation: According to the distribution of gas pipelines, select key areas that need to be monitored and prepare mobile monitoring equipment suitable for large-scale detection;

[0008] S2. On-site deployment: Install the monitoring equipment on a mobile vehicle and calibrate the monitoring equipment using standard gas;

[0009] S3. Navigation monitoring: Determine the navigation route according to the regional planning of the gas pipeline, turn on the monitoring equipment to monitor greenhouse gases in real time along the navigation route, and record the monitoring data;

[0010] S4. Data analysis: Organize and analyze the monitored data to identify abnormal concentration areas and suspected leakage sources;

[0011] S5. Leakage source confirmation and repair: Confirm the suspected leakage source on site. If leakage exists, take appropriate repair measures immediately;

[0012] S6. Subsequent monitoring and review: For a period of time after the leakage source is repaired, the repaired leakage source shall be continuously monitored to ensure that the leakage is completely repaired, and key areas shall be reviewed regularly.

[0013] Preferably, in step S1, the specific area to be inspected is determined according to the distribution of the gas pipeline, historical leakage records and environmental sensitivity factors, and the inspection area is divided into multiple small grids to facilitate systematic and comprehensive inspection. The mobile monitoring equipment includes a vehicle-mounted greenhouse gas analyzer that can continuously monitor gas concentration in real time and realize data storage and transmission, and an infrared imager that can identify temperature changes caused by gas leakage and thus locate the source of the leakage.

[0014] Preferably, in step S2, before deployment, a comprehensive check is performed on the battery power, sensor sensitivity, and data transmission function of the monitoring device, and during the calibration of the monitoring device, calibration data is recorded;

[0015] It is also necessary to equip the mobile vehicle with safety equipment to deal with emergencies and prepare storage devices to record the test data.

[0016] Preferably, in step S3, the monitoring device is also equipped with a mass spectrometry cruise monitoring system and a VOC S The monitor can quickly conduct quantitative and qualitative analysis of volatile organic compounds in the ambient air. During the detection process along the navigation route, it can collect pollutant data in real time and draw a pollution map to intuitively understand the gas leakage situation.

[0017] Preferably, in step S4, the analysis of greenhouse gas monitoring data includes the following process:

[0018] S41. Data collection: real-time collection of pollutant data through mobile monitoring equipment, including concentration values ​​of VOCs, CH4, N2O, and CO2;

[0019] S42. Data preprocessing: clean the data, remove outliers and duplicate values, and integrate data from different sources and formats into a unified database;

[0020] S43, Data Analysis: Calculate the mean, median, maximum, minimum, and standard deviation of pollutant concentrations to understand data distribution, combine pollutant concentration data with geographic location information, draw pollution maps, and analyze the trend of pollutant concentrations over time to identify possible leakage sources;

[0021] S44. Data visualization: Use charts to display the results of data analysis to make the data intuitive and easy to understand, draw pollutant maps to show the spatial distribution of leaked gas, and create dynamic charts or animations to show the changing trend of leaked gas concentration over time.

[0022] Preferably, in step S5, confirming and repairing the leakage source includes confirming the leakage source, controlling the leakage source, and repairing the leakage source; wherein:

[0023] Confirming the source of a leak involves the following process:

[0024] A1. Preliminary judgment: Preliminary judgment of the location of the leak source through on-site observation and gas detection methods;

[0025] A2. Visual assistance: visually identify the device where the leak occurs;

[0026] A3. Accurately locate the leak source and record the specific location, leaked material and leaked amount.

[0027] Preferably, controlling the leakage source includes the following process:

[0028] B1. Alarm and evacuation: After the specific leakage source is detected, the alarm is sounded according to the pre-established emergency warning plan, and the surrounding personnel are evacuated quickly;

[0029] B2. Cut off the gas supply: prevent the leaked gas from continuing to spread and eliminate the ignition source around the leak source.

[0030] Preferably, repairing the leak source includes the following process:

[0031] C1. Select appropriate repair materials according to the characteristics of the leaking gas and the material of the leaking equipment, and repair the leak source;

[0032] C2. Clearly mark the repaired leak source to facilitate subsequent inspection and management, and record the repair time, repair materials used, and repair personnel information;

[0033] C3. Periodically retest the repaired equipment or points to ensure that the repair effect remains effective.

[0034] Preferably, in step S6, when continuously monitoring the repaired leakage source, a reasonable monitoring frequency is set, and the concentration of leaked greenhouse gases, the review of the leakage source, and the operating status of the equipment are monitored; and during the continuous monitoring, the monitoring data is recorded in real time, and the collected data is sorted, analyzed and visualized.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. The present invention adopts cruise detection to achieve rapid coverage of a large range of areas to be detected, thereby efficiently collecting a large amount of data, solving the problem of uneven distribution of surface sites in traditional detection methods, and accurately detecting the concentration data of leaked gas through the mass spectrometry cruise monitoring system. Through continuous monitoring, the changing trend of the leaked gas concentration over time can be displayed, thereby improving the accuracy of leaked gas detection;

[0037] 2. The present invention reduces human interference factors during data monitoring, reduces potential risks to the safety of monitoring personnel, and ensures the authenticity and objectivity of the collected data; and formulates a repair plan for the leakage source, repairs and registers the leakage source in a timely manner, and conducts subsequent continuous monitoring to ensure the continuous and stable operation of the gas equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a flowchart of the present invention;

[0039] Figure 2 A flowchart of the data analysis of the present invention;

[0040] Figure 3 A flowchart of confirming the leakage source of the present invention;

[0041] Figure 4 A flowchart of controlling leakage sources of the present invention;

[0042] Figure 5 This is a flowchart of repairing a leakage source according to the present invention. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] See also Figure 1-5 The present invention provides a technical solution: a large-scale greenhouse gas cruise detection method suitable for leak detection in gas companies, comprising the following steps:

[0045] S1. Preliminary preparation: According to the distribution of gas pipelines, select key areas that need to be monitored and prepare mobile monitoring equipment suitable for large-scale detection; and provide professional training for personnel involved in the detection to ensure that they are familiar with the operation methods and safety specifications of the detection equipment.

[0046] In step S1, the specific area to be inspected is determined based on the distribution of the gas pipeline, historical leakage records and environmental sensitivity factors, and the inspection area is divided into multiple small grids to facilitate systematic and comprehensive inspection. The mobile monitoring equipment includes a vehicle-mounted greenhouse gas analyzer that can continuously monitor gas concentration in real time and realize data storage and transmission, and an infrared imager that can identify temperature changes caused by gas leakage and thus locate the source of the leakage.

[0047] S2. On-site deployment: Install the monitoring equipment on a mobile vehicle to ensure that it can stably and accurately detect greenhouse gases, and calibrate the monitoring equipment with standard gases to ensure the accuracy of the test results;

[0048] In step S2, before deployment, the battery power, sensor sensitivity, and data transmission function of the monitoring equipment are comprehensively checked, and during the calibration of the monitoring equipment, the calibration data is recorded; the calibration data includes calibration time, calibration concentration, calibration results, etc., for subsequent data analysis and processing.

[0049] Determine the starting point and end point: Determine the starting point and end point of the navigation according to the characteristics and planning of the detection area.

[0050] Design a reasonable route: Design a navigation route that can fully cover the inspection area to ensure that each area can be fully inspected.

[0051] Consider traffic and weather factors: When planning your route, you must fully consider traffic conditions and weather factors to ensure a smooth sailing.

[0052] It is also necessary to equip the mobile vehicle with safety equipment to deal with emergencies and prepare storage devices to record the test data.

[0053] According to the detection tasks, clarify everyone's responsibilities and tasks to ensure that everyone knows their work content and requirements. Personnel involved in the detection should have the corresponding professional knowledge and skills, be able to skillfully operate monitoring equipment and respond to emergencies.

[0054] S3. Navigation monitoring: Determine the navigation route according to the regional planning of the gas pipeline, turn on the monitoring equipment to monitor greenhouse gases in real time along the navigation route, and record the monitoring data;

[0055] In step S3, the monitoring equipment is also equipped with a mass spectrometry cruise monitoring system and a VOCS monitor to quickly perform quantitative and qualitative analysis of volatile organic compounds in the ambient air. During the detection process along the cruise route, pollutant data is collected in real time, and a pollution map is drawn to intuitively understand the gas leakage situation.

[0056] Cruise monitoring has the following features:

[0057] Real-time: Cruise monitoring can collect and analyze pollutant data in real time and provide timely environmental monitoring information.

[0058] Continuity: Compared with traditional fixed-point monitoring, cruise monitoring can continuously monitor while moving and cover a wider area.

[0059] Visualization: Through the display of pollution maps, environmental protection departments can intuitively understand the spatial distribution and emissions of pollutants.

[0060] Accuracy: Combined with on-board equipment and data analysis systems, cruise monitoring can provide more accurate monitoring results.

[0061] S4. Data analysis: Organize the monitored data, including concentration data, location information, timestamp, etc., and analyze the data to identify abnormal concentration areas and suspected leakage sources; visualize the analysis results in the form of charts, images, etc. to facilitate understanding and communication.

[0062] In step S4, the analysis of greenhouse gas monitoring data includes the following processes:

[0063] S41. Data collection: real-time collection of pollutant data through mobile monitoring equipment, including concentration values ​​of VOCs, CH4, N2O, and CO2;

[0064] At the same time, the geographical location information of the monitoring points, such as longitude and latitude, altitude, etc., is recorded, and the timestamp of each data point is recorded for subsequent time series analysis.

[0065] S42. Data preprocessing: clean the data, remove outliers and duplicate values, and integrate data from different sources and formats into a unified database;

[0066] S43, Data Analysis: Calculate the mean, median, maximum, minimum, and standard deviation of pollutant concentrations to understand data distribution, combine pollutant concentration data with geographic location information, draw pollution maps, and analyze the trend of pollutant concentrations over time to identify possible leakage sources;

[0067] Analyze the correlation between different pollutants to understand their interactions and impacts. Use statistical methods or machine learning algorithms to detect and identify outliers in the data, which may represent potential sources of pollution or pollution events.

[0068] S44. Data visualization: Use charts to display the results of data analysis to make the data intuitive and easy to understand, draw pollutant maps to show the spatial distribution of leaked gas, and create dynamic charts or animations to show the changing trend of leaked gas concentration over time.

[0069] S5. Leakage source confirmation and repair: Conduct on-site confirmation of suspected leakage sources, including further testing of specific areas using handheld detection equipment. If a leak exists, take appropriate repair measures immediately, such as replacing damaged pipes, tightening loose connections, etc.

[0070] In step S5, the leakage source confirmation and repair includes confirming the leakage source, controlling the leakage source, and repairing the leakage source; wherein:

[0071] Identifying the source of a leak involves the following process:

[0072] A1. Preliminary judgment: Preliminary judgment of the location of the leak source through on-site observation and gas detection means, and attention should be paid to equipment prone to leaks, such as valves, storage tanks, pipelines, etc.

[0073] A2. Visual assistance: visually identify the device where the leak occurs;

[0074] During the smoke plume discovery phase, the scene is pre-judged through visual means to locate equipment where leakage may occur.

[0075] During the plume tracking phase, visual information is used to provide robots or inspectors with clues on the search direction.

[0076] A3. Accurately locate the leak source and record the specific location, leaked material and leaked amount.

[0077] Controlling the source of a leak includes the following processes:

[0078] B1. Alarm and evacuation: After the specific leakage source is detected, the alarm is sounded according to the pre-established emergency warning plan, and the surrounding personnel are evacuated quickly;

[0079] B2. Cut off the gas supply: prevent the leaked gas from continuing to spread and eliminate the ignition source around the leak source.

[0080] Repairing the source of a leak involves the following process:

[0081] C1. Select appropriate repair materials according to the characteristics of the leaking gas and the material of the leaking equipment, and repair the leak source;

[0082] C2. Clearly mark the repaired leak source to facilitate subsequent inspection and management, and record the repair time, repair materials used, and repair personnel information;

[0083] C3. Periodically retest the repaired equipment or points to ensure that the repair effect remains effective.

[0084] S6. Subsequent monitoring and review: For a period of time after the leakage source is repaired, the repaired leakage source shall be continuously monitored to ensure that the leakage is completely repaired, and key areas shall be reviewed regularly.

[0085] In step S6, when continuously monitoring the repaired leakage source, a reasonable monitoring frequency is set, and the concentration of leaked greenhouse gases, the review of the leakage source, and the operating status of the equipment are monitored; and during the continuous monitoring, the monitoring data is recorded in real time, and the collected data is sorted, analyzed, and visualized.

[0086] The contents of the review are:

[0087] Leakage source review: Review previously confirmed leakage sources to confirm whether they have been repaired and are in a safe state.

[0088] Monitoring equipment review: Check the operating status and accuracy of the monitoring equipment to ensure it is functioning properly and providing accurate data.

[0089] Environmental quality review: Review the environmental quality in the monitoring area to assess whether it meets the preset standards or has improved.

[0090] Subsequent monitoring and review should maintain continuity to ensure that the project can operate effectively in the long term. The frequency and intensity of monitoring and review should be increased for key and sensitive areas. When abnormal situations or problems are found, timely responses should be made and effective measures should be taken to handle and resolve them.

[0091] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-scale greenhouse gas cruise detection method suitable for leak detection in gas companies, characterized by: The following steps are involved: S1. Preliminary preparation: According to the distribution of gas pipelines, select key areas that need to be monitored and prepare mobile monitoring equipment suitable for large-scale detection; S2. On-site deployment: Install the monitoring equipment on a mobile vehicle and calibrate the monitoring equipment using standard gas; S3. Navigation monitoring: Determine the navigation route according to the regional planning of the gas pipeline, turn on the monitoring equipment to monitor greenhouse gases in real time along the navigation route, and record the monitoring data; S4. Data analysis: Organize and analyze the monitored data to identify abnormal concentration areas and suspected leakage sources; S5. Leakage source confirmation and repair: Confirm the suspected leakage source on site. If leakage exists, take appropriate repair measures immediately; S6. Subsequent monitoring and review: For a period of time after the leakage source is repaired, the repaired leakage source shall be continuously monitored to ensure that the leakage is completely repaired, and key areas shall be reviewed regularly.

2. A large-scale greenhouse gas cruise detection method suitable for leak detection in gas companies according to claim 1, characterized in that: In step S1, the specific area to be inspected is determined based on the distribution of the gas pipeline, historical leakage records and environmental sensitivity factors, and the inspection area is divided into multiple small grids to facilitate systematic and comprehensive inspection. The mobile monitoring equipment includes a vehicle-mounted greenhouse gas analyzer that can continuously monitor gas concentration in real time and realize data storage and transmission, and an infrared imager that can identify temperature changes caused by gas leakage and thus locate the source of the leakage.

3. A large-scale greenhouse gas cruise detection method suitable for leak detection in gas companies according to claim 1, characterized in that: In step S2, before deployment, the battery power, sensor sensitivity, and data transmission function of the monitoring device are fully checked, and during the calibration of the monitoring device, the calibration data is recorded; It is also necessary to equip the mobile vehicle with safety equipment to deal with emergencies and prepare storage devices to record the test data.

4. A large-scale greenhouse gas cruise detection method suitable for leak detection in gas companies according to claim 1, characterized in that: In step S3, the monitoring equipment is also equipped with a mass spectrometry cruise monitoring system and a VOC S The monitor can quickly conduct quantitative and qualitative analysis of volatile organic compounds in the ambient air. During the detection process along the navigation route, it can collect pollutant data in real time and draw a pollution map to intuitively understand the gas leakage situation.

5. A large-scale greenhouse gas cruise detection method suitable for leak detection in gas companies according to claim 1, characterized in that: In step S4, the analysis of greenhouse gas monitoring data includes the following processes: S41. Data collection: real-time collection of pollutant data through mobile monitoring equipment, including concentration values ​​of VOCs, CH4, N2O, and CO2; S42. Data preprocessing: clean the data, remove outliers and duplicate values, and integrate data from different sources and formats into a unified database; S43, Data Analysis: Calculate the mean, median, maximum, minimum, and standard deviation of pollutant concentrations to understand data distribution, combine pollutant concentration data with geographic location information, draw pollution maps, and analyze the trend of pollutant concentrations over time to identify possible leakage sources; S44. Data visualization: Use charts to display the results of data analysis to make the data intuitive and easy to understand, draw pollutant maps to show the spatial distribution of leaked gas, and create dynamic charts or animations to show the changing trend of leaked gas concentration over time.

6. A large-scale greenhouse gas cruise detection method suitable for leak detection in gas companies according to claim 1, characterized in that: In step S5, the leakage source confirmation and repair includes confirming the leakage source, controlling the leakage source, and repairing the leakage source; wherein: Identifying the source of a leak involves the following process: A1. Preliminary judgment: Preliminary judgment of the location of the leak source through on-site observation and gas detection methods; A2. Visual assistance: visually identify the device where the leak occurs; A3. Accurately locate the leak source and record the specific location, leaked material and leaked amount.

7. A large-scale greenhouse gas cruise detection method suitable for leak detection in gas companies according to claim 6, characterized in that: Controlling the source of a leak includes the following processes: B1. Alarm and evacuation: After the specific leakage source is detected, the alarm is sounded according to the pre-established emergency warning plan, and the surrounding personnel are evacuated quickly; B2. Cut off the gas supply: prevent the leaked gas from continuing to spread and eliminate the ignition source around the leak source.

8. A large-scale greenhouse gas cruise detection method suitable for leak detection in gas companies according to claim 6, characterized in that: Repairing the source of a leak involves the following process: C1. Select appropriate repair materials according to the characteristics of the leaking gas and the material of the leaking equipment, and repair the leak source; C2. Clearly mark the repaired leak source to facilitate subsequent inspection and management, and record the repair time, repair materials used, and repair personnel information; C3. Periodically retest the repaired equipment or points to ensure that the repair effect remains effective.

9. The large-scale greenhouse gas cruise detection method applicable to gas companies for leak detection according to claim 1 is characterized by: In step S6, when continuously monitoring the repaired leakage source, a reasonable monitoring frequency is set, and the concentration of leaked greenhouse gases, the review of the leakage source, and the operating status of the equipment are monitored; and during the continuous monitoring, the monitoring data is recorded in real time, and the collected data is sorted, analyzed, and visualized.

Images