Gas leakage monitoring system and method with self-checking and calibration functions

Abstract

The invention discloses a gas leakage monitoring system and method with self-checking and calibration functions, and the system comprises a holder, a high-definition video module and a gas optical leakage monitoring module are installed on the holder, a standard gas glass tube is arranged below the gas optical leakage monitoring module, and the standard gas glass tube is filled with standard natural gas with known content; the gas optical leakage monitoring module emits near-infrared light to the standard natural gas in the standard gas glass tube and receives monitoring information to obtain the detection content of the standard natural gas; the background management display system obtains the content of the natural gas in the standard gas glass tube through data transmission and compares the content with the known content, and if the content is inconsistent with the known content, an alarm is given immediately. According to the principle that near-infrared light can penetrate through glass and is reflected, glass tube standard natural gas is regularly scanned, monitored, recorded and alarmed, the purposes of testing effectiveness and self-calibration of a leakage monitoring system are finally achieved, manual detection errors can be effectively reduced, the detection efficiency can be improved, and station yard and pipeline leakage risks can be found in time.

Description

Technical Field

[0001] The present invention relates to the technical field of natural gas monitoring, and in particular to a gas leakage monitoring system and method with self-checking and calibration functions. Background Art

[0002] Natural gas pipelines are the main means of energy transmission and one of the country's important infrastructure. Natural gas pipelines are densely distributed and contain high-pressure methane gas. Once a leak occurs, it will cause dangers such as suffocation or explosion, causing serious consequences to life and property.

[0003] At present, the traditional means of optical methane leakage monitoring in China is to use fixed optical gas detectors for monitoring, namely infrared fixed combustible gas detectors and pan-tilt laser methane monitors. Infrared optical sensors make full use of the gas absorption and reflection principle based on infrared chemical light sources to monitor various hydrocarbon methane flammable and harmful gases in the surrounding environment of the site. Changes in the optical path can easily lead to changes in the signal. The detection method of the pan-tilt laser methane monitor is realized through the principle of laser projection feedback. The detection method is more stable and there is no rigid maintenance and replacement requirement for the life of the components. The installation is highly controllable, the detection height is high, the viewing angle is wide, and the installation position can avoid intensive production areas, so as to detect leaked methane gas from a long distance. Compared with infrared fixed combustible gas detectors, maintenance and management are more convenient.

[0004] However, in actual field applications, personnel are unable to timely identify and perceive whether the optical leak detector can effectively monitor and operate normally. This gap will result in untimely leak monitoring, which will bring huge safety hazards to the environment and personnel. At the same time, regular manual system calibration and effectiveness testing is time-consuming and labor-intensive, and there is also the risk of human error.

[0005] In view of this, this application is hereby filed. Summary of the invention

[0006] The problem with the prior art is that the existing optical gas leak detector is unable to timely identify and sense whether the optical leak detector can effectively monitor and operate normally. The purpose of the present invention is to provide a gas leak monitoring system and method with self-test and calibration functions. A standard gas glass tube is connected to the leakage monitoring system. The principle that near-infrared light can penetrate glass and reflect is used to regularly scan, monitor, record and alarm the standard natural gas in the glass tube, ultimately achieving the purpose of testing the effectiveness and self-calibration of the leakage monitoring system itself, which can effectively reduce manual detection errors, improve detection efficiency, and timely discover station and pipeline leakage risks.

[0007] The present invention is achieved through the following technical solutions:

[0008] A gas leakage monitoring system with self-checking and calibration functions comprises a pan-tilt platform, on which a high-definition video module and a gas optical leakage monitoring module are installed.

[0009] It also includes a standard gas glass tube arranged below the gas optical leakage monitoring module, wherein the standard gas glass tube is filled with standard natural gas with a known content;

[0010] The gas optical leakage monitoring module periodically emits near-infrared light to the standard natural gas in the standard gas glass tube, and receives monitoring information of the near-infrared light to obtain the detection content of the standard natural gas in the standard gas glass tube;

[0011] It also includes a background management display system for receiving the detection content of standard natural gas in the standard gas glass tube sent by the gas optical leakage monitoring module and storing the data, while comparing the time and content of the stored data with the known content of the standard natural gas, and displaying the comparison results in the background management display system.

[0012] In one embodiment, a cleaning wiper is installed on one side of the high-definition video module, and a sunshade is installed on the upper side; the cleaning wiper is used to regularly clean the surface of the high-definition video module; the sunshade is used to shade the high-definition video module from the sun and rain.

[0013] In one embodiment, a cleaning wiper is installed on one side of the gas optical leakage monitoring module, and a sunshade is installed on the upper side; the cleaning wiper is used to regularly clean the surface of the optical leakage monitoring module; the sunshade is used to shade the gas optical leakage monitoring module from the sun and rain.

[0014] The present invention utilizes the principle that near-infrared light can penetrate glass and reflect, and regularly scans, monitors, records and alarms the standard natural gas in the glass tube, ultimately achieving the purpose of testing the effectiveness and self-calibration of the leakage monitoring system itself, which can effectively reduce manual detection errors, improve detection efficiency, and timely discover station and pipeline leakage risks.

[0015] The monitoring system of the present invention, the optical gas leakage monitoring system monitors the scene through the high-definition video module, scans and monitors the methane gas leaked on the scene through the gas optical leakage monitoring module, the sunshade provides sunshade and rain protection for the high-definition video module and the gas optical leakage monitoring module, and the cleaning wiper regularly cleans the surface of the video module and the optical leakage monitoring module to keep the module clean and enhance the accuracy of monitoring and monitoring. The 360° pan-tilt support drives the high-definition video module and the gas optical leakage monitoring module to perform 360° scanning monitoring around. When the monitoring system of the present invention performs self-inspection and self-calibration, the gas optical leakage monitoring module regularly emits near-infrared light to the standard natural gas in the standard gas glass tube, the near-infrared light penetrates the glass tube, monitors the natural gas content, and then reflects back to the gas optical leakage monitoring module, the gas optical leakage monitoring module receives the monitoring information of the near-infrared light, obtains the content of the standard natural gas in the glass tube, transmits through the network, stores and records the data in the background management display system, and then the background management display system automatically compares the time and content of the recorded data with the content in the standard gas glass tube, and immediately automatically alarms after finding data deviation, thereby achieving the purpose of self-inspection and self-calibration of the system.

[0016] In a certain embodiment, the pan / tilt platform includes a support and a rotating platform, and the high-definition video module and the gas optical leakage monitoring module are respectively installed on both sides of the rotating platform.

[0017] In a certain embodiment, the calibration gas glass tube is fixedly mounted on a support of the pan / tilt head via a glass tube fixing clamp.

[0018] In one embodiment, a standard gas injection port is provided on the side wall of the standard gas glass tube, so as to facilitate the introduction of standard natural gas at any time when needed.

[0019] In one embodiment, the gimbal is a 360° rotatable gimbal.

[0020] In one embodiment, the background management display system also includes an audio and video alarm module.

[0021] In one embodiment, the high-definition video module, gas optical leakage monitoring module, cleaning wiper and pan / tilt head are all connected to the background management display system via data transmission.

[0022] The present invention also provides a gas leakage monitoring method with self-checking and calibration functions, comprising the following steps:

[0023] (1) Monitor the on-site safety status through the high-definition video module and transmit the data to the background management display system. When a safety problem occurs, the background management display system will immediately issue an alarm;

[0024] (2) Scan and monitor the methane gas leak on site through the gas optical leakage monitoring module, and transmit the monitoring data to the background management display system. When abnormal data occurs, the background management display system will immediately issue an alarm;

[0025] (3) A standard natural gas with a known content is injected into the standard gas glass tube. The gas optical leakage monitoring module periodically emits near-infrared light to the standard natural gas in the standard gas glass tube. The near-infrared light penetrates the standard gas glass tube and monitors the natural gas content, and then reflects back to the gas optical leakage monitoring module. The gas optical leakage monitoring module receives the monitoring information of the near-infrared light, transmits and stores the data to the background management display system;

[0026] (4) The backend management display system compares the time and content of the monitoring data with the known content in the standard gas glass tube. If any data deviation is found, an alarm will be issued immediately.

[0027] The monitoring method of the present invention utilizes the principle that near-infrared light can penetrate glass and reflect, and regularly scans, monitors, records and alarms the standard natural gas in the glass tube, ultimately achieving the purpose of testing the effectiveness and self-calibration of the leakage monitoring system itself, which can effectively reduce manual detection errors, improve detection efficiency, and timely discover station and pipeline leakage risks.

[0028] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0029] The present invention proposes a gas leakage monitoring system and method with self-checking and calibration functions. The system uses the principle that near-infrared light can penetrate glass and reflect to regularly scan, monitor, record and alarm the standard natural gas in the glass tube, ultimately achieving the purpose of testing the effectiveness of the leakage monitoring system itself and self-calibration. It can effectively reduce manual detection errors, improve detection efficiency, and timely discover station and pipeline leakage risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the structure of a monitoring system provided in an embodiment of the present invention.

[0032] Marks and corresponding parts names in the attached drawings:

[0033] 1-HD video module, 2-cleaning wiper, 3-gas optical leakage monitoring module, 4-sunshade, 5-pan-tilt head, 6-glass tube fixing clamp, 7-standard gas glass tube, 8-standard gas injection port, 9-backstage management display system. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments. The illustrative embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0035] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to one of ordinary skill in the art that these specific details are not necessarily employed to practice the present invention. In other embodiments, in order to avoid obscuring the present invention, well-known structures, circuits, or methods are not specifically described.

[0036] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] In the description of the present invention, the directions or positional relationships indicated by terms such as “front”, “rear”, “left”, “right”, “up”, “down”, “vertical”, “horizontal”, “high”, “low”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0038] Example 1

[0039] like Figure 1 As shown, an embodiment of the present invention provides a gas leakage monitoring system with self-checking and calibration functions, including a pan-tilt platform 5, on which a high-definition video module 1 and a gas optical leakage monitoring module 3 are installed.

[0040] It also includes a standard gas glass tube 7 arranged below the gas optical leakage monitoring module 3, wherein the standard gas glass tube 7 is filled with standard natural gas with a known content;

[0041] The gas optical leakage monitoring module 3 periodically emits near-infrared light to the standard natural gas in the standard gas glass tube 7, and receives monitoring information of the near-infrared light to obtain the detection content of the standard natural gas in the standard gas glass tube 7;

[0042] It also includes a background management display system 9, which is used to receive the detection content of the standard natural gas in the standard gas glass tube 7 sent by the gas optical leakage monitoring module 3 and store the data, and compare the time and content of the stored data with the known content of the standard natural gas, and display the comparison result in the background management display system 9. In one embodiment, a cleaning wiper 2 is installed on one side of the high-definition video module 1, and a sunshade 4 is installed on the upper side; the cleaning wiper 2 is used to regularly clean the surface of the high-definition video module 1; the sunshade 4 is used to shade the high-definition video module 1 from the sun and rain.

[0043] In one embodiment, a cleaning wiper 2 is installed on one side of the gas optical leakage monitoring module 3, and a sunshade 4 is installed on the upper side; the cleaning wiper 2 is used to regularly clean the surface of the optical leakage monitoring module 3; the sunshade 4 is used to shade the gas optical leakage monitoring module 3 from the sun and rain.

[0044] The present invention utilizes the principle that near-infrared light can penetrate glass and reflect, and regularly scans, monitors, records and alarms the standard natural gas in the glass tube, ultimately achieving the purpose of testing the effectiveness and self-calibration of the leakage monitoring system itself, which can effectively reduce manual detection errors, improve detection efficiency, and timely discover station and pipeline leakage risks.

[0045] The monitoring system of the present invention, the optical gas leakage monitoring system monitors the scene through the high-definition video module, scans and monitors the methane gas leaked on the scene through the gas optical leakage monitoring module, the sunshade provides sunshade and rain protection for the high-definition video module and the gas optical leakage monitoring module, and the cleaning wiper regularly cleans the surface of the video module and the optical leakage monitoring module to keep the module clean and enhance the accuracy of monitoring and monitoring. The 360° pan-tilt support drives the high-definition video module and the gas optical leakage monitoring module to perform 360° scanning monitoring around. When the monitoring system of the present invention performs self-inspection and self-calibration, the gas optical leakage monitoring module regularly emits near-infrared light to the standard natural gas in the standard gas glass tube, the near-infrared light penetrates the glass tube, monitors the natural gas content, and then reflects back to the gas optical leakage monitoring module, the gas optical leakage monitoring module receives the monitoring information of the near-infrared light, obtains the content of the standard natural gas in the glass tube, transmits through the network, stores and records the data in the background management display system, and then the background management display system automatically compares the time and content of the recorded data with the content in the standard gas glass tube, and immediately automatically alarms after finding data deviation, thereby achieving the purpose of self-inspection and self-calibration of the system.

[0046] In a certain embodiment, the pan / tilt platform includes a support and a rotating platform, and the high-definition video module and the gas optical leakage monitoring module are respectively installed on both sides of the rotating platform.

[0047] In one embodiment, the calibration gas glass tube 7 is fixedly mounted on a support of the pan / tilt head 5 via a glass tube fixing clamp 6 .

[0048] In one embodiment, a standard gas injection port 8 is provided on the side wall of the standard gas glass tube 7 to facilitate the introduction of standard natural gas at any time when needed.

[0049] In one embodiment, the platform 5 is a 360° rotatable platform.

[0050] In one embodiment, the background management display system 9 also includes an audio and visual alarm module.

[0051] In one embodiment, the high-definition video module 1, the gas optical leakage monitoring module 3, the cleaning wiper 2 and the pan / tilt head 5 are all connected to the background management display system via data transmission.

[0052] Example 2

[0053] The embodiment of the present invention further provides a gas leakage monitoring method with self-checking and calibration functions, comprising the following steps:

[0054] (1) Monitor the on-site safety status through the high-definition video module and transmit the data to the background management display system. When a safety problem occurs, the background management display system will immediately issue an alarm;

[0055] (2) Scan and monitor the methane gas leak on site through the gas optical leakage monitoring module, and transmit the monitoring data to the background management display system. When abnormal data occurs, the background management display system will immediately issue an alarm;

[0056] (3) A standard natural gas with a known content is injected into the standard gas glass tube. The gas optical leakage monitoring module periodically emits near-infrared light to the standard natural gas in the standard gas glass tube. The near-infrared light penetrates the standard gas glass tube and monitors the natural gas content, and then reflects back to the gas optical leakage monitoring module. The gas optical leakage monitoring module receives the monitoring information of the near-infrared light, transmits and stores the data to the background management display system;

[0057] (4) The backend management display system compares the time and content of the monitoring data with the known content in the standard gas glass tube. If any data deviation is found, an alarm will be issued immediately.

[0058] The monitoring method of the present invention utilizes the principle that near-infrared light can penetrate glass and reflect, and regularly scans, monitors, records and alarms the standard natural gas in the glass tube, ultimately achieving the purpose of testing the effectiveness and self-calibration of the leakage monitoring system itself, which can effectively reduce manual detection errors, improve detection efficiency, and timely discover station and pipeline leakage risks.

[0059] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gas leakage monitoring system with self-checking and calibration functions, comprising a pan-tilt platform (5), on which a high-definition video module (1) and a gas optical leakage monitoring module (3) are installed, characterized in that: It also comprises a standard gas glass tube (7) arranged below the gas optical leakage monitoring module (3), wherein the standard gas glass tube (7) is filled with standard natural gas with a known content; The gas optical leakage monitoring module (3) regularly emits near-infrared light to the standard natural gas in the standard gas glass tube (7), and receives monitoring information of the near-infrared light to obtain the detection content of the standard natural gas in the standard gas glass tube (7); It also includes a background management display system (9) for receiving the detection content of the standard natural gas in the standard gas glass tube (7) sent by the gas optical leakage monitoring module (3) and storing the data, and at the same time comparing the time and content of the stored data with the known content of the standard natural gas, and displaying the comparison result in the background management display system (9).

2. A gas leakage monitoring system with self-checking and calibration functions according to claim 1, characterized in that: A cleaning wiper (2) is installed on one side of the high-definition video module (1), and a sunshade (4) is installed on the upper side; The cleaning wiper (2) is used to regularly clean the surface of the high-definition video module (1); The sunshade (4) is used to provide sunshade and rain protection for the high-definition video module (1).

3. A gas leakage monitoring system with self-checking and calibration functions according to claim 1, characterized in that: A cleaning wiper (2) is installed on one side of the gas optical leakage monitoring module (3), and a sunshade (4) is installed on the upper side; The cleaning wiper (2) is used to regularly clean the surface of the optical leakage monitoring module (3); The sunshade (4) is used to provide sunshade and rain protection for the gas optical leakage monitoring module (3).

4. A gas leakage monitoring system with self-checking and calibration functions according to claim 1, characterized in that: The pan / tilt platform (5) comprises a support and a rotating platform, and the high-definition video module (1) and the gas optical leakage monitoring module (3) are respectively installed on both sides of the rotating platform.

5. A gas leakage monitoring system with self-checking and calibration functions according to claim 4, characterized in that: The calibration gas glass tube (7) is fixedly mounted on a support of the pan / tilt platform (5) via a glass tube fixing clamp (6).

6. A gas leakage monitoring system with self-checking and calibration functions according to claim 1, characterized in that: A standard gas injection port (8) is provided on the side wall of the standard gas glass tube (7).

7. A gas leakage monitoring system with self-checking and calibration functions according to claim 1, characterized in that: The platform (5) is a 360° rotatable platform.

8. A gas leakage monitoring system with self-checking and calibration functions according to claim 1, characterized in that: The background management display system (9) also includes an audible and visual alarm module.

9. A gas leakage monitoring system with self-checking and calibration functions according to claim 2 or 3, characterized in that: The high-definition video module (1), the gas optical leakage monitoring module (3), the cleaning wiper (2) and the pan / tilt head (5) are all connected to the background management display system (9) via data transmission.

10. A gas leakage monitoring method with self-checking and calibration functions, characterized in that: The steps include: (1) Monitor the on-site safety status through the high-definition video module and transmit the data to the background management display system. When a safety problem occurs, the background management display system will immediately issue an alarm; (2) Scan and monitor the methane gas leak on site through the gas optical leakage monitoring module, and transmit the monitoring data to the background management display system. When abnormal data occurs, the background management display system will immediately issue an alarm; (3) A standard natural gas with a known content is injected into the standard gas glass tube. The gas optical leakage monitoring module periodically emits near-infrared light to the standard natural gas in the standard gas glass tube. The near-infrared light penetrates the standard gas glass tube and monitors the natural gas content, and then reflects back to the gas optical leakage monitoring module. The gas optical leakage monitoring module receives the monitoring information of the near-infrared light, transmits and stores the data to the background management display system; (4) The backend management display system compares the time and content of the monitoring data with the known content in the standard gas glass tube. If any data deviation is found, an alarm will be issued immediately.

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