Fuel gas field monitoring system

Abstract

The utility model relates to the technical field of fuel gas safety, in particular to a fuel gas field monitoring system which comprises a gas monitoring module. The gas monitoring module comprises a pan-tilt telemetry unit and a management platform, the pan-tilt telemetry unit is in communication connection with a data center of the management platform, the pan-tilt telemetry unit comprises a pan-tilt body, a camera bin and a laser telemetry bin, and the camera bin and the laser telemetry bin are fixed to the two sides of the pan-tilt body; the camera bin faces the gas pipeline area; the laser telemetering bin comprises a laser gas telemetering instrument, and the laser gas telemetering instrument comprises a signal processing unit; the working modes of the holder body comprise comprehensive scanning, multi-point scanning and preset point scanning, the gas pipeline leakage problem can be quickly found through the holder, and casualties and property losses are reduced to the maximum extent.

Description

Technical Field

[0001] The utility model relates to the technical field of gas safety, in particular to a gas on-site monitoring system. Background Art

[0002] As a clean and efficient energy source, gas has played an increasingly important role in the urban energy supply. However, safety accidents caused by gas leakage often occur. In recent years, due to frequent natural gas leakage accidents, huge losses of people's lives and property have been caused.

[0003] In order to prevent gas leakage accidents and minimize casualties and property losses, gas companies are urgently in need of a real-time monitoring system that can quickly detect gas pipeline leaks. Content of the Utility Model

[0004] To solve the above problems, the utility model provides a gas on-site monitoring system, which can quickly detect gas pipeline leaks and minimize casualties and property losses.

[0005] To achieve the above object, the technical solution adopted by the utility model is:

[0006] A gas on-site monitoring system includes a gas monitoring module;

[0007] The gas monitoring module includes a pan-tilt telemetry unit and a management platform. The pan-tilt telemetry unit is communicatively connected to the data center of the management platform. The pan-tilt telemetry unit includes a pan-tilt body, a camera compartment, and a laser telemetry compartment. The camera compartment and the laser telemetry compartment are fixed on both sides of the pan-tilt body, and the camera compartment faces the gas pipeline area;

[0008] The laser telemetry compartment includes a laser gas telemetry instrument, and the laser gas telemetry instrument includes a signal processing unit;

[0009] The working modes of the pan-tilt body include full scan, multi-point scan, and preset point scan.

[0010] Preferably, it further includes a video monitoring module, and the video monitoring module includes an AI video monitoring device.

[0011] Preferably, it further includes a communication module, and the communication module includes an RS485 interface, an RS422 interface, 5G Internet of Things, and an Ethernet.

[0012] Preferably, it further includes a dispatching center, and both the gas monitoring module and the video monitoring module are communicatively connected to the dispatching center.

[0013] Preferably, it further includes a power supply module, which includes a solar cell module and a storage battery. The power supply module is electrically connected to the control unit of the management platform.

[0014] Preferably, the camera compartment includes an LED lamp, and the laser telemetry compartment further includes a green indicating laser lamp and a detection laser lamp.

[0015] Preferably, the pan-tilt telemetry unit further includes a sunshade and a base. The sunshade is respectively fixed on the tops of the camera compartment and the laser telemetry compartment, and the base is connected to the lifting rod.

[0016] Preferably, it further includes a sensor module, which includes a pressure sensor, a temperature sensor and a flow sensor. The sensor module is communicatively connected to the management platform.

[0017] Preferably, it further includes an execution unit, which includes an electromagnetic valve installed in the gas pipeline. The electromagnetic valve is electrically connected to the control unit.

[0018] Preferably, the data center is communicatively connected to the terminal and communicatively connected to the remote WEB.

[0019] The beneficial effects of the present utility model are as follows:

[0020] 1. The present utility model is provided with a gas monitoring module, which includes a pan-tilt telemetry unit. The pan-tilt telemetry unit includes a camera compartment and a laser telemetry compartment. The laser telemetry compartment includes a laser gas telemetry instrument. Through the signal processing unit of the laser gas telemetry instrument, the concentration of the leaked gas in the gas pipeline can be calculated in real time, so as to quickly detect the gas pipeline leakage situation.

[0021] 2. The present utility model is provided with a gas monitoring module, which includes a pan-tilt telemetry unit. The pan-tilt telemetry unit includes a pan-tilt body. The working modes of the pan-tilt body include full scan, multi-point scan and preset point scan. By setting multiple working modes, the pan-tilt body can adopt different working modes according to the differences in the inspection areas for different areas, reducing the waste and investment of resources.

[0022] 3. The present utility model is provided with a camera compartment. Through the camera compartment, the gas pipeline area can be monitored, and the video signal can be transmitted to the data center of the management platform and saved. Through the data center, the video information of the gas pipeline area can be traced.

[0023] 4. Through the mutual cooperation of a laser telemeter and an optical detector, ultra-long-distance methane concentration detection can be achieved, and some inaccessible positions in the gas pipeline area can be detected. It has strong pertinence, only reacts to methane gas, and is not affected by the cross-interference of water vapor and other gases. The laser telemeter also has an automatic protection function against high-concentration gas impact. Description of the Drawings

[0024] Figure 1 Structural diagram of the pan-tilt telemetry unit in a specific embodiment of the present utility model;

[0025] Figure 2 Schematic diagram of the support structure of the pan-tilt telemetry unit in a specific embodiment of the present utility model;

[0026] Figure 3 Principle diagram of methane gas detection in a specific implementation of the present utility model.

[0027] Explanation of the reference numerals in the drawings: 1. Camera compartment; 2. Outer LED lamp; 3. Pan-tilt main body; 4. External introduction device of the pan-tilt; 5. Sunshade; 6. Green indicating laser lamp; 7. Window glass; 8. Detection laser lamp; 9. Laser telemetry compartment; 91. Laser gas telemeter; 10. Nameplate; 11. Grounding mark; 12. Base; 13. Lifting rod. Detailed Implementation Manner

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1 - 3 As shown, the present utility model relates to a gas on-site monitoring system.

[0030] Embodiment 1

[0031] A gas on-site monitoring system includes a gas monitoring module;

[0032] The gas monitoring module includes a pan-tilt telemetry unit and a management platform. The pan-tilt telemetry unit is communicatively connected to the data center of the management platform. The pan-tilt telemetry unit includes a pan-tilt main body 3, a camera compartment 1, and a laser telemetry compartment 9. The camera compartment 1 and the laser telemetry compartment 9 are fixed on both sides of the pan-tilt main body 3, and the camera compartment 1 faces the gas pipeline area;

[0033] The laser telemetry compartment 9 includes a laser gas telemeter, and the laser gas telemeter includes a signal processing unit;

[0034] The working modes of the pan-tilt main body 3 include full scan, multi-point scan, and preset point scan.

[0035] Reference Figure 1 As shown, the pan-tilt telemetry unit is mainly divided into the pan-tilt main body 3, the camera compartment 1, and the laser telemetry compartment 9. The pan-tilt main body 3 mainly controls the continuous 360-degree horizontal rotation and the ±90-degree vertical rotation of the pan-tilt, and executes the instructions issued by the pan-tilt telemetry unit, such as full scan, multi-point scan, preset point scan, etc. The camera compartment 1 is equipped with a 2-million-pixel network camera with 20x optical zoom and an external LED lamp 2 for night auxiliary lighting. This device can observe the scanning scene in real time and accurately locate the leakage point; the laser telemetry compartment 9 is equipped with a laser gas telemetry instrument 91.

[0036] The laser gas telemetry instrument is made by adopting a high-performance large-aperture photosensitive telemetry instrument and micro-control technology, combined with excellent SMD technology. It has good repeatability and temperature and humidity characteristics, as well as advantages such as long service life and convenient operation.

[0037] The present utility model adopts laser spectral absorption technology to monitor the methane concentration. The laser gas telemetry instrument emits horizontal scanning laser. The scanning laser is two parallel laser beams. Among them, the visible green laser is for indicating and positioning, and the invisible light is the detection beam. The absorption characteristics of methane gas for a certain specific wavelength laser are used for scanning and detection. When there is a methane gas mass in the detection area, a part of the laser passing through the methane gas mass will be absorbed, and part of the detection beam is re-converged by the telemetry instrument onto the optical detector, and then through signal conversion, extraction, analysis, and calculation, the concentration of the leaked gas is obtained, and the final gas concentration is obtained. The measurement result is in the unit of ppm·m.

[0038] When the laser emitted by the laser gas telemetry instrument passes through the natural gas leakage gas mass, the methane gas will absorb the laser. The laser after absorption is reflected by an object and then returns to the telemetry instrument itself. After being processed by the internal components of the instrument, the leaked methane concentration information is obtained. This concentration information can be represented by the methane column density. The advantages are as follows:

[0039] 1. Ultra-long-distance detection, using a green indicating laser lamp 6, and the measured distance can reach the standard meter.

[0040] 2. Strong pertinence, only reacts to methane gas and is not affected by the cross-interference of water vapor and other gases.

[0041] 3. The instrument has a fast alarm speed, and the response time does not exceed the specified value.

[0042] 4. Sensitivity, adopting wavelength modulation spectroscopy technology, and the sensitivity can reach the standard.

[0043] 5. The power connection part is an ordinary cable, which can be freely bent and is not easy to break.

[0044] 6. High-performance sensors with high measurement accuracy, good stability and repeatability, and long service life.

[0045] 7. Automatic protection function against high-concentration gas impact, with the ability to restore factory settings to prevent misoperation.

[0046] 8. The remote detection function enables detection in some places that are inaccessible or difficult to reach.

[0047] The design of this laser gas telemetry instrument follows national standards. Compared with traditional point-type detectors, it has the advantages of a wide coverage range, fast response speed, and the ability to detect gas leaks that are missed or undetected by traditional point-type detectors due to installation, wind direction, etc.

[0048] Reference Figure 1 As shown, the pan-tilt telemetry unit further includes a sunshade 5 and a base 12. The sunshade 5 is respectively fixed on the tops of the camera compartment 1 and the laser telemetry compartment 9. The base 12 is connected to the lifting rod 13. After aligning the 6 screw holes on the pan-tilt base 12 with the 6 screw holes on the lifting rod 13, use M6X30 socket head cap screws to pass through the screw holes of the pan-tilt base 12 and the fixed object screw holes in sequence, and finally fix them with a Φ6 flat washer, a Φ6 spring washer, and an M6 nut.

[0049] In addition, the pan-tilt telemetry unit further includes an external introduction device 4 for the pan-tilt. The external introduction device 4 for the pan-tilt is fixed on the base 12 of the pan-tilt main body 3. There are also a grounding mark 11 and a nameplate 10 on the base 12, and a window glass 7 is also provided on the surface of the pan-tilt main body 3.

[0050] The operating environment temperature of the pan-tilt telemetry unit is -40°C to +60°C. If there is a phenomenon of intense heat (such as strong sunlight), a sunshade or similar protective device should be installed to prevent overheating.

[0051] The gas monitoring module has a real-time monitoring function, and the monitoring interface synchronously displays: video images, detector working status, current methane gas concentration at the detection point, distance and alarm information, accurate identification of the current detection point, current preset point position, etc. information;

[0052] The gas monitoring module also has a real-time alarm function. The pan-tilt telemetry unit can comprehensively analyze based on the detected methane gas concentration data to determine a leakage event, generate real-time alarm information, and prompt in both sound and light ways.

[0053] If it is found that the concentration of combustible gas in the monitored area exceeds the alarm threshold, the pan-tilt telemetry unit can continuously detect this point. At the same time, the duration of fixed-point detection can also be set. The alarm concentration threshold of combustible gas can be manually set, and the detection rate (response rate) is supported to be adjusted.

[0054] The utility model further includes an execution unit. The execution unit includes an electromagnetic valve installed in the gas pipeline. The management platform is provided with a control unit, and the control unit is electrically connected to the electromagnetic valve. When the methane concentration in the gas pipeline is greater than the threshold value or the methane flow rate is greater than the threshold value, the opening degree of the electromagnetic valve is adjusted through the control unit of the management platform to control the flow rate of methane gas and reduce the concentration of methane gas.

[0055] The pan-tilt telemetry unit performs inspection and scanning on the pipelines in the set area according to the instructions issued by the gas telemetry information management platform through RS422. The pan-tilt telemetry unit transmits the video signal to the data exchange center of the management platform through the Ethernet network. At the same time, the laser telemetry data is also transmitted to this center through RS485 or 4-20mA; the data exchange center timely pushes the leakage alarm information to the mobile phones of relevant responsible persons through the SMS modem. At the same time, the supervision and dispatching center, remote WEB, and mobile APP can remotely access the data exchange center to realize real-time monitoring, historical viewing, emergency dispatching, instruction issuing, data mining and analysis. According to the analysis report, the daily inspection plan can be improved and refined.

[0056] The pan-tilt telemetry unit is applied to on-site gas monitoring and can provide continuous monitoring without unattended operation for 24 hours. When gas leakage is detected at the site, the concentration information and the pan-tilt angle information will be superimposed on the monitoring video. At the same time, after the infrared camera takes emergency photos and videos, they are saved in the emergency alarm data area of the data center for later playback and query.

[0057] The gas monitoring module also has a fixed-point monitoring function. The operator can also manually set the alarm concentration threshold of the combustible gas and support the adjustment of the detection rate (response rate); if the concentration of the combustible gas detected exceeds the alarm threshold, fixed-point continuous detection can be carried out on this point, and the duration of fixed-point detection can also be set.

[0058] The traditional gas detector measures the average gas concentration indoors / outdoors, and the unit is ppm or %LEL. The laser gas telemetry instrument of the utility model measures the gas integrated concentration along the effective optical transmission path between the telemetry instrument and the target reflector. Usually, a small-range gas cloud with a higher concentration has the same effect as a large-range gas cloud with a lower concentration. The unit of the pan-tilt telemetry instrument is different from that of the traditional gas detector, and its unit is ppm×meter of the gas average concentration or ppm·m. For example: A gas cloud of 100 ppm for 5 meters and a gas cloud of 250 ppm for 2 meters respectively appearing on the path of the working beam between the HRLD100 and the background reflector are equal, that is, 100 ppm×5m×2 = 250 ppm×2m×2 = 1000 ppm·m.

[0059] In addition to the pan-tilt telemetry unit near the gas outlet, there is also a sensor module, which includes a pressure sensor, a temperature sensor and a flow sensor. The sensors cooperate with each other and send a monitoring signal to the communication module. The communication module is used to convert the monitoring signal into a data signal and send it to the control unit of the management platform.

[0060] Example 2

[0061] Based on Example 1, the utility model is also provided with a video monitoring module and a communication module. In the outdoor gas pipeline gas leakage monitoring scenario, due to the complex outdoor environment and the communication problems between the site and relevant departments, the traditional wired networking method is difficult.

[0062] Disadvantages of existing technologies: 1. Low security of Internet access; 2. High cost of physical dedicated lines; 3. Complex WI FI wiring, time-consuming, and poor experience;

[0063] The solution of the utility model: using shared UPF to achieve flexible and low-cost networking; security requirements can be exclusive to customers; using ULCL to split the internal and external networks, usually mainly using the internal network service, and a small amount of time or individual applications require the use of the Internet scenario.

[0064] Adopting 5G+IoT private network application, the data of gas AI video monitoring and front-end gas telemetry instruments are transmitted through China Unicom's 5G private network, collected and uploaded to the command and dispatch center, and the data obtained by the front end is displayed in real time on the large screen to timely discover and prevent the risks of construction work and gas leakage around the on-site gas pipeline. Improve the management efficiency of gas pipeline operation and maintenance personnel; through China Unicom's 5G accompanying private network, it can provide low-cost, flexible and secure access to internal and external network services at the same time.

[0065] The video surveillance module uses AI video surveillance + back-end platform algorithm training to realize the front-end camera recognition and early warning system. When construction workers enter the designated area without wearing safety helmets and reflective clothing, etc., it can realize automatic real-time analysis and capture of violations clearly required by the safety management regulations, improve the actual application ability of the video, and timely discover real-time alarms and statistics on safety helmets, reflective clothing, and other behaviors.

[0066] By using AI video surveillance + back-end platform algorithm training, we can implement a front-end camera recognition and early warning system. When construction machinery and personnel enter the gas pipeline protection area, the AI ​​video surveillance system will automatically capture and analyze in real time. When the system determines that the behavior belongs to a third-party construction, it will trigger an intrusion alarm, generate an alarm in the system background, and trigger a loud speaker warning sound on site.

[0067] Install movable AI video surveillance equipment at large and complex construction sites to prevent damage to gas pipelines caused by ad hoc changes to the plan. The AI video surveillance equipment is based on an intelligent video production system for deep learning, and the accuracy of alarms will increase with the number of learning times.

[0068] Advantages of 5G Internet of Things private network applications: 1. Compared with 4G, the first problem that 5G needs to solve is to improve network speed. For gas services, there is no pressure to use 5G technology for the transmission of high-definition video surveillance and laser pan-tilt detection systems of gas equipment, which can better support the data transmission of the AI visual inspection project at the gas operation site. 2. 5G was proposed in the uRLLC scenario, and the minimum requirement for air interface latency is 1 ms. For the gas pipeline monitoring scenario, the gas leakage monitoring service has high requirements for network latency and reliability, and this feature of 5G can well meet the monitoring service needs of this project. 3. Customized industry private network services can customize dedicated network slices from operators according to the communication requirements of the service to transmit gas service data and isolate it from other public network services to form a logical private network to ensure the security of information data.

[0069] Embodiment 3

[0070] In addition to the real-time monitoring function, real-time alarm function, and fixed-point monitoring function described in Embodiment 1, the gas monitoring module also has the following functions:

[0071] Automatic inspection function: The automatic inspection function supports preset points, sets the duration of fixed-point detection, and the number of preset points can reach 256, and can ensure the consistency between the preset points and the actual inspection points;

[0072] Supports setting area cruise, specifying the positions of two vertices of a rectangular area, and automatically generating a zigzag inspection route by the software;

[0073] Supports presetting multiple automatic inspection trajectories and setting their application rules to automatically switch different trajectories according to time periods.

[0074] Manual control function: Supports manual adjustment of the camera focus; supports manual operation of the pan-tilt rotation;

[0075] Screen recording function: Alarm video recording and storage: Automatically intercepts the alarm screen and simultaneously records and stores the video for 30 seconds before and after according to the alarm information.

[0076] Alarm record query function: Supports displaying the alarm record list according to the specified time period, and the records include the concentration value and position of combustible gas; supports playing back the video files recorded during the alarm.

[0077] Indicating laser function: The indicating position is consistent with the position where the detection laser lamp 8 emits laser, and the indicating laser lamp can be manually turned off and on.

[0078] Embodiment 4

[0079] The management platform described in Embodiment 1 is used to view the concentration display, concentration curve, light intensity display, and device status display areas of each channel of the telemeter in different regions. The horizontal and pitching angles of the pan-tilt head and the radar azimuth map parameters can be displayed. In the preset position setting area of the cruise plan, the full-region and multi-point scanning plans, etc., can be set. Based on the data of the gas platform data center, visual digital twin can also be performed.

[0080] In the interface display of the management platform, the red square is the concentration display, concentration curve, light intensity display, and device status display areas of each channel of the telemeter; the yellow square is the display of the horizontal and pitching angles of the pan-tilt head and the radar azimuth map; the black square is the preset position setting area of the cruise plan, where the full-region and multi-point scanning plans can be set.

[0081] In the editing window of the channel setting, new channels can be added or existing channels can be edited, and at the same time, relevant parameters such as data channel configuration, video channel configuration, alarm threshold, and status judgment can be completed.

[0082] In the editing window of the alarm data management, the setting information of early warning, high alarm, and very high alarm of all channels can be queried and displayed.

[0083] In the management platform, the historical inspection information of each gas channel can also be viewed, including the historical alarm curve and video playback;

[0084] In the management platform, the relevant operation logs such as the login, configuration, and modification of the monitoring system can also be viewed.

[0085] In the daily station inspection, the whole-region scanning mode is mainly used. Customers can set the start and end points of the scanning area, the horizontal and vertical speeds, and the inspection levels according to the usage instructions of the pan-tilt head control module, and then click on automatic execution. The pan-tilt telemetry unit will plan the inspection route by itself and detect evenly in the horizontal and vertical directions.

[0086] The process of the pan-tilt head moving back and forth repeatedly between two fixed points or two set points at a certain speed and preset level according to the predetermined rotation direction. The left limit (viewing angle boundary) and the right limit (viewing angle boundary) are preset, and the pan-tilt head can be made to patrol back and forth within the left and right limit intervals, and the patrol speed and patrol level can be set in advance.

[0087] In the horizontal direction, the pan-tilt telemetry unit will perform constant-speed rotation scanning according to the planned fan-shaped area, as shown in the following figure.

[0088] In the vertical direction, the pan-tilt telemetry unit will perform layer-by-layer scanning according to the pre-planned pitch angle range and the levels to be scanned. In the horizontal direction, after scanning one layer, the instrument will rotate to the next specified angle in the vertical direction for uniform scanning.

[0089] According to the differences in the inspection areas, high-leakage areas may require high-density and frequent scanning, and switch to the multi-point scanning mode according to their own needs. The multi-point scanning mode is the process in which the pan-tilt completes the reciprocating inspection of the preset points in a certain order and at a certain time interval. This automatic function means that through pre-setting, certain inspection positions can be arranged into the cruise queue in the required order, and with just one command, the pan-tilt can automatically move back and forth at a certain interval in the order of the set positions. The pan-tilt telemetry unit will perform reciprocating scanning one by one according to the multiple points preset in the station yard.

[0090] In addition, it also includes preset position scanning, that is, the process in which the pan-tilt cyclically calls the preset positions (the preset positions include parameters such as the focal length and focus of the camera lens) in a certain order and at a certain time interval. The automatic cruise function means that through pre-programming, certain preset positions can be arranged into the automatic cruise queue in the required order, and with just one command, the pan-tilt can automatically move back and forth at the set time interval in the order of the set preset positions. By setting preset positions at each important position, automatic cruise between the preset positions of the pan-tilt can be achieved.

[0091] When the standby time of the pan-tilt reaches the set value, functions such as automatically running to the preset position, automatic cruise, automatic scanning, and tracing can be performed. Set a function for the pan-tilt (such as: a preset point scanning route, a full-area scanning route, a multi-point scanning route, etc.), and after the pan-tilt maintains the preset standby time in the standby state, it will automatically execute and call this function. There is also the so-called watch position.

[0092] The pan-tilt can store the operations within a certain period of time and reproduce the previous operation process. By artificially changing the state of the pan-tilt or the lens, the pan-tilt will automatically record it, and by enabling this function, the pan-tilt can run according to the set tracing route. There is also the so-called tracing self-learning or pattern path.

[0093] Embodiment 5

[0094] Preferably, the present utility model adopts the following solutions for anti-noise measures:

[0095] (1) Select equipment with low vibration and low noise. When it cannot be avoided, in areas with relatively high noise, the noise source should be separated from the operators as much as possible; when necessary, for remote control, a sound-insulated operation (control) room can be set up; or noise elimination, sound insulation, sound absorption, vibration isolation or comprehensive control measures can be taken.

[0096] (2) A silencer shall be installed at the vent with excessive noise.

[0097] (3) When necessary, a certain distance shall be maintained between the device or control room and the noise source equipment, or isolation control shall be implemented to control the noise.

[0098] (4) For places where the noise level cannot be controlled even after taking noise control measures, or for mobile or temporary noise sources and workplaces where noise control measures are not applicable, necessary personal protective equipment (earplugs, earmuffs, etc.) shall be provided for the staff, and the exposure time to noise shall be minimized as much as possible.

[0099] Preferably, when selecting the location of the pan-tilt telemetry unit, it is important to consider the installation location, which needs to be reasonably matched according to the area of the station yard and the radius range that the pan-tilt telemetry unit can cover. Whether there are any potential continuous gas leakage sources at the installation location, and how the pan-tilt telemetry unit is fixed, supported and protected to avoid being affected by any emergencies.

[0100] Under normal circumstances, the following locations are the best:

[0101] Newly built station yard: The pan-tilt telemetry unit can be designed and installed at the center of the site.

[0102] Existing station yard: The pan-tilt telemetry unit can be designed and installed at the middle position of the longest right-angled side of the site.

[0103] The installation height must be able to cover the telemetered area and shall not block the detection beam.

[0104] Close to the leakage source, along the expected leakage trajectory, taking into account the wind direction and any other factors that will affect the spread of the leakage.

[0105] Between any potential leakage source and any potential ignition source.

[0106] According to the site selection requirements, after determining the installation location, the base of the pan-tilt lifting rod 13 shall be pre-cast in advance, and a cable underground pit shall be excavated at a suitable position between the control room and the pan-tilt telemetry in the system construction schematic diagram.

[0107] The installation of the pan-tilt telemetry unit shall avoid the following adverse areas:

[0108] Severe heat: The specified operating environment temperature of the pan-tilt telemetry unit is -40°C to +60°C. If there is a severe heat (such as strong sunlight) phenomenon, a sunshade or similar protection shall be installed to prevent overheating.

[0109] Heavy metal pollution sources: The installation of the cloud platform telemetry unit should avoid heavy metal pollutants to prevent window pollution. Potential sources of heavy metal pollution include exhaust gases discharged from generators or turbines, drilling equipment, processing ventilation vents or chimneys, etc. If the source of heavy metal pollution cannot be avoided, additional shielding should be considered or more auxiliary cleaning measures should be provided.

[0110] Environment of snow or ice with temperature below -40°C: When the temperature is below -40°C, the heated optical window of the cloud platform telemetry unit may not melt the snow or ice on the window. If working outdoors in extremely cold conditions for a long time, it is recommended to add additional protection measures to prevent snow or ice from being blown onto the window.

[0111] Areas of subsidence and sedimentation: Whenever possible, it is recommended that the cloud platform telemetry unit not be installed in locations of subsidence, sedimentation or thawing of permafrost. If these locations cannot be avoided, the installation fixing devices should be strengthened based on the design of the installation structure.

[0112] Accidental impact: In the place where the cloud platform telemetry unit is installed, if there is a risk of accidental impact on the cloud platform telemetry unit by equipment, personnel or moving objects, such situations should be avoided whenever possible. If these cannot be avoided, the measures to be taken are to enhance mechanical protection and warnings.

[0113] Strong electromagnetic fields: The cloud platform telemetry unit complies with the GB / T17626-2008 standard, so it is well protected against electromagnetic field interference. However, in some places such as radio transmissions, the magnetic field intensity may exceed the intensity specified in GB / T17626-2008. Whenever possible, these places should be avoided during installation.

[0114] Embodiment 6

[0115] Based on the above embodiments, the power supply module of this on-site gas monitoring system uses solar power supply. The power supply module is electrically connected to the control unit of the management platform. Through the control unit, it can control whether the power supply module is put into operation. The power supply module includes a storage battery, a solar controller and a solar cell module. Inside the management platform, a 24V power supply needs to be connected to supply power to the cloud platform telemetry unit; the video signal is first connected to a network video recorder through a network cable and then connected to a computer through a network cable; in addition, RS485 and RS422 are connected to the USB interface of the computer through an adapter. The power of the cloud platform itself, the power of other accessories, and the power supply power should not be less than 120W.

[0116] The above embodiments are only descriptions of the preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A gas on-site monitoring system, characterized in that: Includes gas monitoring module; The gas monitoring module includes a pan-tilt telemetry unit and a management platform, wherein the pan-tilt telemetry unit is communicatively connected to a data center of the management platform, and the pan-tilt telemetry unit includes a pan-tilt main body, a camera compartment and a laser telemetry compartment, wherein the camera compartment and the laser telemetry compartment are fixed on both sides of the pan-tilt main body, and the camera compartment faces the gas pipeline area; The laser telemetry chamber includes a laser gas telemetry instrument, and the laser gas telemetry instrument includes a signal processing unit; The working modes of the pan / tilt body include full scan, multi-point scan and preset point scan; It also includes a video monitoring module, which includes an AI video monitoring device.

2. The gas on-site monitoring system according to claim 1, characterized in that: It also includes a communication module, which includes an RS485 interface, an RS422 interface, a 5G Internet of Things and Ethernet.

3. The gas on-site monitoring system according to claim 1, characterized in that: It also includes a dispatching center, and the gas monitoring module and the video monitoring module are both connected to the dispatching center for communication.

4. The gas on-site monitoring system according to claim 1, characterized in that: It also includes a power supply module, which includes a solar cell assembly and a storage battery, and the power supply module is electrically connected to the control unit of the management platform.

5. The gas on-site monitoring system according to claim 1, characterized in that: The camera compartment includes an LED light, and the laser telemetry compartment also includes a green indicator laser light and a detection laser light.

6. The gas on-site monitoring system according to claim 1, characterized in that: The pan / tilt telemetry unit further comprises a sunshade and a base. The sunshade is respectively fixed on the top of the camera compartment and the laser telemetry compartment, and the base is connected to the lifting rod.

7. The gas on-site monitoring system according to claim 1, characterized in that: It also includes a sensor module, which includes a pressure sensor, a temperature sensor and a flow sensor, and the sensor module is communicatively connected to the management platform.

8. The gas on-site monitoring system according to claim 4, characterized in that: It also includes an execution unit, which includes a solenoid valve installed in the gas pipeline, and the solenoid valve is electrically connected to the control unit.

9. The gas on-site monitoring system according to claim 1, characterized in that: The data center is connected to the terminal for communication, and the data center is connected to the remote WEB for communication.

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