A smart gas marker post with forced ventilation function

Abstract

This utility model provides a smart gas leak marker post with forced ventilation function, belonging to the field of gas technology. The smart gas leak marker post includes a post body and a post head. One end of the post body is inserted into the soil, and the other end is connected to the post head. The post body has a cavity extending axially through the post body. A negative pressure device and a sensor are installed in the cavity near the post head. The negative pressure device creates a negative pressure in the cavity, and the sensor detects the gas concentration in the cavity. The post body is inserted into the soil above a gas pipeline. Gas leaking from the pipeline enters the post body through the soil. The negative pressure device creates a localized negative pressure zone between the sensor and the soil, making it easier for gas molecules in the soil pores to be drawn towards the sensor, increasing the gas concentration at the sensor probe, preventing soil covering the leak point from affecting the propagation of the leaked gas, and improving the sensitivity of gas leak detection.

Description

Technical Field

[0001] This application belongs to the field of gas technology, specifically relating to a smart gas marker post with forced ventilation function. Background Technology

[0002] Gas marker posts are important markers and safety warning facilities for gas pipelines, typically buried above them. If a gas pipeline buried underground leaks, it is difficult to detect and confirm the leak location from the surface in a timely manner. Therefore, existing technology includes gas marker posts equipped with gas leak detection functions. Leaking gas diffuses to the gas marker post, and sensors on the post detect the gas concentration and issue an alarm.

[0003] However, because the space between the gas marker post and the gas pipeline below is filled with soil, the leak point in the gas pipeline is covered by the soil. As the gas diffuses to the gas marker post, it is absorbed by the soil, affecting its diffusion. In this situation, when the leaked gas diffuses to the gas marker post, the gas concentration at the sensor may still be below the sensor's sensitivity threshold, causing the sensor to fail to detect the leak and thus failing to effectively detect and warn of gas leaks. Utility Model Content

[0004] This utility model provides a smart gas marker post with forced ventilation function, which aims to solve the problem in the prior art where the gas pipeline leak point is covered by soil, and the gas is absorbed and blocked by the soil during the process of diffusing to the smart gas marker post, thus affecting the diffusion of the gas.

[0005] In a first aspect, this utility model provides a smart gas marker post with forced ventilation function, including a post body and a post head. One end of the post body is inserted into the soil, and the other end is connected to the post head. The post body has a cavity that extends through the axial direction of the post body. A negative pressure device and a sensor are provided at one end of the cavity near the post head. The negative pressure device is used to create negative pressure in the cavity, and the sensor is used to detect the gas concentration in the cavity.

[0006] Optionally, the negative pressure device is an axial flow fan.

[0007] Optionally, the pile body is provided with a ventilation device, which is located on the side of the axial fan and the sensor near the pile head, and the ventilation device is used to connect the cavity with the outside.

[0008] Optionally, the negative pressure device and the sensor are connected to the pile head, and the pile head is detachably connected to the pile body.

[0009] Optionally, the end of the pile body used for insertion into the soil is provided with a vent hole, which communicates with the cavity and is used to allow gas in the soil to enter the cavity.

[0010] Optionally, the pile head is equipped with an audio-visual module, which is used to monitor image and sound information in the environment.

[0011] Optionally, a communication module is provided on the pile head, which is electrically connected to the sensor and the audio-visual module. The communication module is used to transmit the detection data of the sensor and the audio-visual module.

[0012] Optionally, the smart gas marker post also includes a three-dimensional vibration module, which is used to detect the vibration of the smart gas marker post.

[0013] Optionally, the smart gas marker post also includes a photovoltaic cell, which is arranged around the outer surface of the post head and electrically connected to the negative pressure device, the sensor, the audio-visual module, the communication module and the three-dimensional vibration module.

[0014] Optionally, the smart gas marker post also includes a main control circuit board, which is located inside the post head. The negative pressure device, the sensor, the audio-visual module, the communication module, the three-dimensional vibration module, and the photovoltaic cell are electrically connected to the main control circuit board.

[0015] This utility model provides a smart gas leak marker post with forced ventilation function, belonging to the field of gas technology. The smart gas leak marker post includes a post body and a post head. One end of the post body is inserted into the soil, and the other end is connected to the post head. The post body has a cavity extending axially through the post body. A negative pressure device and a sensor are installed in the cavity near the post head. The negative pressure device creates a negative pressure in the cavity, and the sensor detects the gas concentration in the cavity. The post body is inserted into the soil above a gas pipeline. Gas leaking from the pipeline enters the post body through the soil. The negative pressure device creates a localized negative pressure zone between the sensor and the soil, making it easier for gas molecules in the soil pores to be drawn towards the sensor, increasing the gas concentration at the sensor probe, preventing soil covering the leak point from affecting the propagation of the leaked gas, and improving the sensitivity of gas leak detection.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of a smart gas marker post according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram showing the distribution of intelligent gas marker posts on gas pipelines according to an embodiment of this utility model.

[0020] Attached reference numerals: 10: Intelligent gas marker post; 11: Post body; 12: Post head; 13: Negative pressure device; 14: Sensor; 15: Ventilation device; 16: Ventilation hole; 17: Audiovisual module; 18: Photovoltaic cell; 20: Gas pipeline. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the fixed scope of the present utility model.

[0022] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0023] Gas pipeline marker posts are important identification and safety warning facilities for gas pipelines. They are usually buried above gas pipelines and are marked with information such as the gas company, pipeline material, pressure rating, flow direction, and emergency contact number. They serve to remind people, especially construction workers, that there are gas pipelines below, preventing accidental damage during excavation. In the event of an accident or when repairs are needed, they allow for quick identification of the gas pipeline information and location, and contact with the responsible parties.

[0024] Intelligent gas pipeline marker posts utilize various sensors, cameras, and communication technologies to achieve real-time data collection, pipeline route indication, gas leak detection, ambient environment monitoring, and remote control. For the gas leak detection function, the marker post is equipped with a gas leak detection sensor that can detect the concentration of gas in the environment. When leaked gas spreads to the marker post, the sensor detects the gas concentration and issues an alarm. By integrating intelligent technologies, intelligent gas pipeline marker posts can promptly detect gas leaks and provide timely warnings in the event of external disruptive factors, such as excavator construction, thereby improving the safety of gas pipelines and bringing new possibilities to gas pipeline safety management.

[0025] However, because the space between the gas marker post and the gas pipeline below is filled with soil, the leak point in the gas pipeline is covered and enveloped by the soil. As the gas diffuses towards the gas marker post, it is absorbed by the soil, affecting its diffusion. In this situation, when a gas pipeline leaks and the leaked gas diffuses to the gas marker post, the gas concentration at the sensor may still be below the sensor's sensitivity threshold. This results in the sensor failing to detect the leak, thus hindering effective gas leak detection and early warning.

[0026] This utility model embodiment provides a smart gas marker post 10 with forced ventilation function to solve the problem in the prior art where the leak point of the gas pipeline 20 is covered by soil, and the gas is absorbed by the soil during the diffusion process to the smart gas marker post 10, affecting the diffusion of the gas. The smart gas marker post 10 includes a post body 11 and a post head 12. One end of the post body 11 is inserted into the soil, and the other end is connected to the post head 12. The post body 11 has a cavity extending through the axial direction of the post body 11. A negative pressure device 13 and a sensor 14 are provided in the cavity near the post head 12. The negative pressure device 13 is used to create negative pressure in the cavity, and the sensor 14 is used to detect the gas concentration in the cavity.

[0027] like Figure 1 As shown, the intelligent gas marker post 10 consists of a post body 11 buried in the soil and a post head 12 exposed on the ground. The post body 11 is used to fix the intelligent gas marker post 10 and mark its position. The post head 12 is used to support a series of sensors 14 and electronic equipment, playing an intelligent monitoring role. The buried depth of the intelligent gas marker post 10 is more than 40 cm to ensure its overall stability, and the height of the part exposed above the ground should preferably be 80-100 cm. The post body 11 and post head 12 can be made of materials such as concrete, metal, or plastic, and are cylindrical or square in shape.

[0028] The smart gas marker post 10 is installed above the gas pipeline 20. When a gas pipeline 20 leaks, the leaked gas spreads in all directions, penetrating the soil and reaching the smart gas marker post 10. The cavity inside the post 11 is connected to the outside, allowing gas from the soil to enter the cavity. The sensor 14 in the cavity monitors the gas concentration in the cavity in real time. Once the gas concentration exceeds a preset threshold, an alarm mechanism is triggered, promptly notifying relevant personnel for handling. Maintenance personnel can quickly locate the leak point based on the alarm information, shortening the investigation time and reducing safety hazards.

[0029] Specifically, the main component of the gas is methane. Methane gas is lighter than air and diffuses upwards. Therefore, sensor 14 is installed in the cavity near the end of the pile head 12, where the gas concentration is highest and higher than the ground, preventing rainwater from affecting sensor 14. Sensor 14 used to detect gas concentration can be of various types, including thermal conductivity, electrochemical, and optical, suitable for different application scenarios. Thermal conductivity sensor 14 detects gas concentration by measuring the difference in thermal conductivity between gas and air, offering advantages such as fast response and good stability. Electrochemical sensor 14 utilizes the principle of chemical reaction to convert gas concentration into an electrical signal output, featuring high sensitivity and good selectivity. Optical sensor 14 detects gas concentration by measuring the absorption or scattering of light by the gas, offering advantages such as non-contact measurement and immunity to electromagnetic interference. Depending on specific application requirements and environmental conditions, a suitable type of sensor 14 can be selected to ensure the monitoring accuracy and reliability of the smart gas marker pile 10.

[0030] A negative pressure device 13 is also installed inside the cavity of the pile body 11 to create negative pressure within the cavity, further promoting the diffusion and accumulation of methane gas and improving the sensitivity of the sensor 14. The negative pressure device 13 is positioned between the sensor 14 and the pile head 12. By extracting air from the cavity, the negative pressure device 13 lowers the air pressure inside the cavity than the external atmospheric pressure, thus creating a negative pressure environment within the cavity. When methane gas leaks, the negative pressure attracts the gas more easily into the cavity and allows it to be detected by the sensor 14, enabling rapid and accurate monitoring of the gas concentration. In practical applications, the negative pressure device 13 can be normally open, maintaining a negative pressure environment inside the cavity of the pile body 11 for an extended period. After a leak in the gas pipeline 20, the sensor 14 on the smart gas marker pile 10 can detect the abnormal gas concentration within a short time. Alternatively, the negative pressure device 13 can be opened intermittently at a preset frequency, creating a negative pressure environment during its operation and temporarily increasing the sensitivity of the sensor 14 in detecting gas leaks.

[0031] In practical applications, the smart gas marker posts 10 are arranged along the extension direction of the gas pipeline 20, and multiple smart gas marker posts 10 are distributed at intervals above the gas pipeline 20.

[0032] In this embodiment of the utility model, such as Figure 2 As shown, smart gas marker posts 10 are deployed above the gas pipeline 20 according to standard interval requirements. When a gas leak occurs, the smart gas marker post 10 closest to the leak point can accelerate the guidance of gas molecules in the soil to the sensor 14 probe in the cavity through the negative pressure device 13, thereby improving the timeliness and sensitivity of gas leak detection.

[0033] According to the specifications, the gas intelligent marker posts 10 are arranged at intervals of 50 meters. In combination with the actual situation, the deployment density can be increased in high-risk areas such as pipeline corners and crossings to form a fully covered intelligent monitoring network to monitor gas leaks caused by human damage, pipeline corrosion and other reasons in real time.

[0034] When multiple smart gas marker posts 10 detect gas leaks, inputting the location, distance, and concentration of each smart gas marker post 10 into the software allows for precise location of the gas leak point, further narrowing the search area and improving emergency repair efficiency. Furthermore, regular data analysis can predict potential gas leak risks, facilitating the maintenance and management of the gas pipeline 20.

[0035] In some alternative embodiments, the negative pressure device 13 is an axial flow fan.

[0036] An axial flow fan is installed inside the cavity of pile 11, close to the probe of sensor 14. When the axial flow fan is working, the blades push the air to flow in the same direction as the axis. The rotation of the axial flow fan blades accelerates the gas flow, overcomes soil resistance, and increases the gas concentration in the area of ​​the gas leak detection sensor 14 probe. Through active extraction, a local negative pressure zone is formed between the sensor 14 probe and the soil. The negative pressure environment makes it easier for gas molecules in the soil pores to be drawn towards the sensor 14 probe, significantly increasing the gas concentration at the sensor 14 probe.

[0037] In addition, in some alternative embodiments, a ventilation device 15 is provided on the pile body 11. The ventilation device 15 is located on the side of the axial fan and sensor 14 near the pile head 12. The ventilation device 15 is used to connect the cavity with the outside.

[0038] A ventilation device 15 is installed between the axial flow fan and the pile head 12, connecting the cavity to the outside environment and ensuring the normal operation of the axial flow fan. Simultaneously, the ventilation device 15 effectively prevents rainwater, dust, and other impurities from entering the cavity and damaging the sensor 14 and the negative pressure device 13. The ventilation device 15 can adopt a mesh structure or louvers, ensuring both airflow and good protection.

[0039] It should be noted that although the gas inside the cavity will diffuse into the external environment through the ventilation device 15, this diffusion is very slight and will not affect the gas concentration inside the cavity. Compared with the case without the negative pressure device 13, the gas concentration at the sensor 14 probe is significantly increased, which can improve the sensitivity of gas detection.

[0040] In some alternative embodiments, the negative pressure device 13 and the sensor 14 are connected to the pile head 12, which is detachably connected to the pile body 11.

[0041] The negative pressure device 13 and sensor 14 are installed on the pile head 12. The pile head 12 and the pile body 11 are designed to be detachable. During later use and maintenance, the pile head 12 can be removed to inspect and replace the negative pressure device 13, sensor 14, and any power supply, circuit board, and other equipment that may be installed on the pile head 12.

[0042] The pile head 12 and the pile body 11 can be connected by bolts, snap-fit ​​connections, or other suitable methods to ensure the stability and reliability of the connection. This design not only improves the maintainability of the equipment and reduces maintenance costs, but also ensures that the intelligent gas marker post 10 maintains good working performance during long-term use, thus extending its service life.

[0043] In some alternative embodiments, the end of the pile 11 that is inserted into the soil is provided with a vent 16, which communicates with the cavity and allows the gas in the soil to enter the cavity.

[0044] Ventilation holes 16 can be distributed at various locations on the end of the pile 11 that is inserted into the soil, allowing leaked gas to enter the cavity within the pile 11 from different directions through the ventilation holes 16, thus improving gas diffusion efficiency. This design provides the same detection efficiency regardless of whether the leak point is located in different directions from the gas intelligent marker pile 10. This design not only improves the sensitivity of gas leak detection but also ensures the accuracy of monitoring results. The size, number, and location of the ventilation holes 16 can be adjusted according to actual needs to adapt to different soil conditions and gas leak monitoring requirements. Furthermore, the placement of the ventilation holes 16 also considers waterproofing and anti-clogging factors to ensure long-term stable operation.

[0045] In some alternative embodiments, the pile head 12 is provided with an audio-visual module 17, which is used to monitor image and sound information in the environment.

[0046] The audio-visual module 17 includes cameras and microphones. Cameras are fixedly installed on all four sides of the pile head 12, and microphones are also installed. The cameras and microphones respectively collect image and sound information around the smart gas marker pile 10. The collected images and sounds are processed using algorithms to identify construction machinery vehicles, piled heavy objects, open flames, etc. around the smart gas marker pile 10, especially the operating sounds of construction machinery vehicles, and then an alarm is triggered to prevent potential external safety hazards from damaging the gas pipeline 20.

[0047] In some alternative embodiments, the pile head 12 is provided with a communication module, which is electrically connected to the sensor 14 and the audio-visual module 17. The communication module is used to transmit the detection data of the sensor 14 and the audio-visual module 17.

[0048] The communication module in this embodiment includes a 4G (Fourth Generation) wireless communication module. The 4G wireless communication module provides network communication functions, uploads the data of the gas smart marker post 10 to the control platform, and receives processing instructions issued by the control platform to remotely monitor the working status of the gas pipeline 20.

[0049] The communication module also includes a Beidou / GPS (Global Positioning System) module. The Beidou / GPS module uploads the location of the smart gas marker 10 to the control platform, accurately locates the smart gas marker 10, and can also be tracked if the smart gas marker 10 is stolen.

[0050] In some optional embodiments, the smart gas marker post 10 also includes a three-dimensional vibration module for detecting the vibration of the smart gas marker post.

[0051] The three-dimensional vibration module can accurately sense the vibration of the smart gas marker post 10 and analyze and process the vibration data in real time to determine whether the marker post has been subjected to external impact or damage. If abnormal vibration is detected, an alarm is immediately triggered, and the vibration information is uploaded to a remote platform via the communication module so that managers can take timely countermeasures.

[0052] In some alternative embodiments, the smart gas marker post 10 also includes a photovoltaic cell 18, which is arranged around the outer surface of the post head 12 and is electrically connected to the negative pressure device 13, the sensor 14, the audio-visual module 17, the communication module and the three-dimensional vibration module.

[0053] Multiple photovoltaic cells 18 are distributed on the outer surface of the pile head 12, supplying power to electrical equipment such as the negative pressure device 13, sensor 14, audio-visual module 17, communication module, and three-dimensional vibration module on the pile head 12. Under sufficient sunlight, the photovoltaic cells 18 can fully absorb solar energy and convert it into electrical energy, storing it in the built-in battery pack for use at night or on cloudy days when sunlight is insufficient. This ensures that the gas intelligent marker pile 10 can operate continuously and stably under various weather conditions, greatly improving its reliability and practicality.

[0054] In addition, in some optional embodiments, the gas smart marker post 10 also includes a main control circuit board, which is located inside the post head 12. The negative pressure device 13, sensor 14, audio-visual module 17, communication module, three-dimensional vibration module and photovoltaic cell 18 are electrically connected to the main control circuit board.

[0055] The main control circuit board, serving as the control center of the entire intelligent gas marker post 10, is responsible for receiving and processing signals from various modules. Based on preset logic and algorithms, it effectively controls and schedules the negative pressure device 13, sensor 14, audio-visual module 17, communication module, and three-dimensional vibration module, and receives detection data from these modules. It analyzes and processes this data in real time to assess the surrounding environment of the intelligent gas marker post 10 and issue warnings. The integration of multiple modules significantly improves the sensitivity of the intelligent gas marker post 10 to abnormal situations. Combining various detection data allows for more accurate feedback on the working status of the intelligent gas marker post 10. Even if some modules malfunction, the detection data from other modules can be referenced, providing significant safety redundancy. Through the main control circuit board, the intelligent gas marker post 10 can achieve real-time monitoring and uploading of information such as vibration, location, and power consumption. Simultaneously, it receives and executes instructions from a remote platform, enhancing the intelligence level of the intelligent gas marker post 10.

[0056] This utility model provides a smart gas marker post 10 with forced ventilation function, belonging to the field of gas technology. The smart gas marker post 10 includes a post body 11 and a post head 12. One end of the post body 11 is inserted into the soil, and the other end is connected to the post head 12. The post body 11 has a cavity extending through the axial direction of the post body 11. A negative pressure device 13 and a sensor 14 are provided in the cavity near the post head 12. The negative pressure device 13 is used to create a negative pressure in the cavity, and the sensor 14 is used to detect the gas concentration in the cavity. The post body 11 of the smart gas marker post 10 is inserted into the soil above the gas pipeline 20. Gas leaking from the gas pipeline 20 enters the post body 11 through the soil. The negative pressure device 13 creates a local negative pressure zone between the sensor 14 and the soil, making it easier for gas molecules in the soil pores to be drawn towards the sensor 14, increasing the gas concentration at the sensor 14 probe, preventing the soil covering the leak point from affecting the propagation of the leaked gas, and improving the sensitivity of gas leak detection.

[0057] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0058] Although alternative embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make further changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the alternative embodiments as well as all changes and modifications falling within the scope of the present invention.

[0059] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used merely to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or terminal device that includes that element.

[0060] The technical solution provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the principle and implementation of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A smart gas marker post with forced ventilation function, characterized in that, The device includes a pile body and a pile head. One end of the pile body is inserted into the soil, and the other end is connected to the pile head. The pile body has a cavity that extends through the pile body along its axial direction. A negative pressure device and a sensor are provided in the cavity near the pile head. The negative pressure device is used to create negative pressure in the cavity, and the sensor is used to detect the concentration of gas in the cavity.

2. The intelligent gas marker post according to claim 1, characterized in that, The negative pressure device is an axial flow fan.

3. The intelligent gas marker post according to claim 2, characterized in that, The pile body is equipped with a ventilation device, which is located on the side of the axial flow fan and the sensor near the pile head. The ventilation device is used to connect the cavity with the outside.

4. The intelligent gas marker post according to claim 1, characterized in that, The negative pressure device and the sensor are connected to the pile head, and the pile head is detachably connected to the pile body.

5. The intelligent gas marker post according to claim 1, characterized in that, The pile body has a ventilation hole at one end for insertion into the soil. The ventilation hole is connected to the cavity and is used to allow gas in the soil to enter the cavity.

6. The intelligent gas marker post according to claim 1, characterized in that, The pile head is equipped with an audio-visual module, which is used to monitor image and sound information in the environment.

7. The intelligent gas marker post according to claim 6, characterized in that, A communication module is provided on the pile head. The communication module is electrically connected to the sensor and the audio-visual module. The communication module is used to transmit the detection data of the sensor and the audio-visual module.

8. The intelligent gas marker post according to claim 7, characterized in that, The smart gas marker post also includes a three-dimensional vibration module, which is used to detect the vibration of the smart gas marker post.

9. The intelligent gas marker post according to claim 8, characterized in that, The smart gas marker post also includes a photovoltaic cell, which is arranged around the outer surface of the post head. The photovoltaic cell is electrically connected to the negative pressure device, the sensor, the audio-visual module, the communication module, and the three-dimensional vibration module.

10. The intelligent gas marker post according to claim 9, characterized in that, The smart gas marker post also includes a main control circuit board, which is located inside the post head. The negative pressure device, the sensor, the audio-visual module, the communication module, the three-dimensional vibration module, and the photovoltaic cell are electrically connected to the main control circuit board.

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