Unattended station safety hazard intelligent early warning device for long-distance natural gas pipeline

Abstract

This invention provides an intelligent early warning device for unattended safety hazards at long-distance natural gas pipeline stations. The device includes a connecting shell and a monitoring system. The connecting shell comprises a horizontal section and a vertical section. The two ends of the horizontal section are respectively used to connect to two long-distance pipelines. A blocking component is provided between the horizontal and vertical sections. A sealing cover is provided on the vertical section. The monitoring system includes a liquid level monitoring component and a corrosion detection component. A sample is provided on the side of the sealing cover near the vertical section, and the corrosion detection component is used to detect the sample. A temporary storage pipe is provided on the horizontal section and connected to it. A first vacuum valve is provided on the blocking component, and a baffle plate is provided at the temporary storage pipe. A second vacuum valve is provided on the baffle plate. The intelligent early warning device for unattended safety hazards at long-distance natural gas pipeline stations also includes a power supply module and a communication module. This invention can determine the pipeline damage situation in advance during emergency repairs, know in advance whether there is pipeline corrosion, and make preparations in advance, thus improving repair efficiency.

Description

Technical Field

[0001] This utility model relates to the field of natural gas monitoring technology, and in particular to an intelligent early warning device for unattended safety hazards at natural gas long-distance pipeline stations. Background Technology

[0002] Natural gas production areas (gas fields, import receiving terminals) are often far from major consumer markets (urban clusters, industrial zones). Long-distance pipelines act like a "bridge" spanning thousands of miles, resolving the core contradiction of "gas being available but not used, and gas being used but not available."

[0003] In existing technologies, long-distance natural gas pipelines require real-time monitoring of their pressure, flow rate, and corrosion status to prevent leaks. When monitoring pipeline corrosion, as in the patent with patent number "CN113958870B," a sample is typically used. The corrosion status of the sample is then used to infer the overall corrosion situation within the pipeline. However, this patent uses level sensors and flow sensors to detect pipeline anomalies, requiring personnel to arrive before the sample is retrieved for testing. This means that corrosion detection can only be performed manually on-site after other sensors detect a leak, which is inconvenient and prevents personnel from understanding the pipeline corrosion situation before arrival. Furthermore, when personnel open the cover for maintenance, the stored natural gas may leak out, resulting in energy waste. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a slope protection structure to deal with the hazards of debris flow, and to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] An intelligent early warning device for unattended safety hazards at a long-distance natural gas pipeline station includes a connecting shell between two long-distance pipelines and a monitoring system installed within the connecting shell. The connecting shell includes an integrally formed horizontal section and a vertical section. The two ends of the horizontal section are respectively used to connect to the two long-distance pipelines. A blocking component for blocking natural gas is provided between the horizontal and vertical sections. A sealing cap is provided at the end of the vertical section. The monitoring system includes a liquid level monitoring component and a corrosion detection component installed on the vertical section. A sample is provided on the side of the sealing cap near the vertical section. The corrosion detection component is used to detect the sample. A temporary storage pipe is provided on the horizontal section and communicates with it. A first vacuum valve is provided on the blocking component. A baffle plate is provided at the temporary storage pipe. A second vacuum valve is provided on the baffle plate. The intelligent early warning device for unattended safety hazards at a long-distance natural gas pipeline station also includes a power supply module and a communication module.

[0007] According to one aspect of the above technical solution, the two ends of the horizontal section are further provided with sealing components. The sealing components include a sealing plate disposed in the horizontal section, two first rotating shafts disposed at both ends of the sealing plate, a first worm gear disposed on the first rotating shaft, a second rotating shaft disposed in the horizontal section, a first worm gear disposed on the second rotating shaft, and a first motor for driving either of the second rotating shafts to rotate. The first worm gear and the first worm gear mesh, and the first motor is fixed to the outer wall of the horizontal section. The sealing plate is used to cover the flow space in the horizontal section.

[0008] According to one aspect of the above technical solution, the blocking assembly includes a third rotating shaft disposed on the inner wall of the horizontal section near the vertical section, a blocking plate rotatably disposed on the third rotating shaft, a second motor disposed on the outer wall of the horizontal section, a fourth rotating shaft connected to the second motor, a second worm gear disposed on the third rotating shaft, and a second worm gear disposed on the fourth rotating shaft. The size of the blocking plate is larger than the size of the flow space in the vertical section. The first vacuum valve is disposed on the blocking plate, and the second worm gear meshes with the second worm gear.

[0009] According to one aspect of the above technical solution, the corrosion detection assembly includes a support frame disposed on the outer wall of the vertical section, a third motor disposed on the support frame, a fifth rotating shaft connected to the third motor, a third worm gear connected to the fifth rotating shaft, a sixth rotating shaft rotatably disposed on the support frame, a third worm wheel connected to the sixth rotating shaft, a support rod connected to the sixth rotating shaft, an annular housing connected to the support rod, a gear disk rotatably disposed in the annular housing, a fourth motor fixedly connected to the annular housing, a gear connected to the fourth motor, a first electric telescopic rod fixedly connected to the gear disk, and an ultrasonic corrosion detector disposed on the first electric telescopic rod, wherein the third worm gear meshes with the third worm wheel.

[0010] According to one aspect of the above technical solution, a second electric telescopic rod is provided on the outer wall of the vertical section, and the sealing cover is connected to the second electric telescopic rod.

[0011] According to one aspect of the above technical solution, the liquid level monitoring component includes a liquid tank disposed on the outer wall of the vertical section, a connecting pipe connecting the vertical section and the liquid tank, and a liquid level sensor disposed on the liquid tank.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] A connecting shell is installed between two long-distance pipelines. A blocking component is installed on the vertical section of the connecting shell, along with a liquid level monitoring component and a corrosion detection component. A sample is then placed on the sealing cap of the vertical section. Under normal use, the blocking component does not isolate the horizontal and vertical sections. When the internal gas pressure of the long-distance pipeline changes, indicating a potential safety hazard, the liquid level monitoring component detects that the liquid level has reached a threshold. The system then controls the blocking component to separate the horizontal and vertical sections. The corrosion detection component measures the corrosion degree of the sample. The sample is made of the same material as the long-distance pipeline and is subjected to natural gas corrosion inside the pipeline for an extended period, indirectly reflecting the corrosion status of the pipeline. When the corrosion degree of the sample exceeds safety standards, or when the monitoring component detects a potential safety hazard, the system detects the corrosion. If other sensors in the detection system malfunction, an early warning signal is sent to an external control terminal via communication modules such as RS485 and LoRa modules. Professional personnel are then dispatched to the site for handling. Before using the corrosion detection component to test the sample, natural gas needs to be pumped into the horizontal section through the first vacuum valve, and then pumped into the storage pipe through the second vacuum valve to prevent natural gas leakage during maintenance. After maintenance, the second vacuum valve is activated to pump gas from the storage pipe into the horizontal section to avoid energy waste (it should be noted that the second vacuum valve needs to be a bidirectional pumping valve type), and the blocking structure is opened to allow the horizontal and vertical sections to remain connected. If the long-distance pipeline is corroded, the long-distance pipeline needs to be replaced, and new samples need to be set accordingly.

[0014] The above structure allows for the assessment of pipeline damage and corrosion during emergency repairs, enabling proactive preparation and improving repair efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the intelligent early warning device for unattended safety hazards at natural gas long-distance pipeline stations in the first embodiment of this utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure hidden behind the protective shell;

[0017] Figure 3 for Figure 2 A schematic diagram of the structure after the sealing cover is raised.

[0018] Figure 4 This is a schematic diagram of the internal structure of the second horizontal segment;

[0019] Figure 5 for Figure 4 Schematic diagram of the temporary storage area;

[0020] Figure 6 for Figure 4 Schematic diagram of the structure at the middle sealing component;

[0021] Figure 7 for Figure 4 Schematic diagram of the structure at the middle blocking component;

[0022] Figure 8 for Figure 3 Schematic diagram of the structure of the central sealing cap;

[0023] Figure 9 for Figure 3 Schematic diagram of the structure of the corrosion detection component;

[0024] Figure 10 for Figure 9 Schematic diagram of the structure behind the hidden annular shell; Explanation of main component symbols:

[0025] Connecting shell 10 Long-distance pipelines 20 Protective Case 30 horizontal segment 11 vertical segment 12 Sealing cap 13 Corrosion detection components 40 Third motor 41 support frame 42 Annular shell 43 Second electric telescopic pole 80 Temporary storage 14 sealing plate 51 baffle 61 barrier 141 Second vacuum valve 142 First pivot 52 First worm gear 53 Second pivot 51 First worm gear 55 First Motor 56 First vacuum valve 62 Fourth pivot 63 Second worm gear 64 Third pivot 65 Second worm gear 66 Second motor 67 Sample 131 Threaded connecting rod 132 support rod 44 Fifth pivot 45 Third worm gear 46 Third worm gear 47 gear 48 First electric telescopic pole 71 Ultrasonic corrosion detector 72 Fourth motor 73 Gear Disc 74 Connecting pipe 90 liquid tank 91

[0026] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0028] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Please see Figures 1 to 10 The image shows an intelligent early warning device for unattended safety hazards at a natural gas long-distance pipeline 20 station according to the first embodiment of this utility model. It includes a connecting shell 10 disposed between two long-distance pipelines 20, and a monitoring system disposed within the connecting shell 10. The connecting shell 10 includes an integrally formed horizontal section 11 and a vertical section 12. The two ends of the horizontal section 11 are respectively used to connect to the two long-distance pipelines 20. A blocking component for blocking natural gas is provided between the horizontal section 11 and the vertical section 12. A sealing cap 13 is provided at the end of the vertical section 12. The monitoring system... The device includes a liquid level monitoring component and a corrosion detection component 40 installed on the vertical section 12. A sample 131 is provided on the side of the sealing cover 13 near the vertical section 12. The corrosion detection component 40 is used to detect the sample 131. A temporary storage tube 14 is provided on the horizontal section 11 and communicates with it. A first vacuum valve 62 is provided on the blocking component. A baffle plate 141 is provided at the temporary storage tube 14. A second vacuum valve 142 is provided on the baffle plate 141. The intelligent early warning device for unattended safety hazards at the natural gas long-distance pipeline 20 station also includes a power supply module and a communication module.

[0031] Understandably, this utility model involves setting a connecting shell 10 between two long-distance pipelines 20, installing a blocking component on the vertical section 12 of the connecting shell 10, and installing a liquid level monitoring component and a corrosion detection component 40 on the vertical section 12 of the connecting shell 10. A sample 131 is then placed on the sealing cover 13 of the vertical section 12. During normal use, the blocking component does not block the horizontal section 11 and the vertical section 12. When the internal gas pressure of the long-distance pipeline 20 changes, it indicates a potential safety hazard. The liquid level monitoring component detects that the liquid level has reached a threshold, indicating a change in the flow rate or state of the natural gas, thus indicating a problem within the entire long-distance natural gas pipeline. (It should be noted that, as in existing technologies, vibration sensors, flow sensors, etc., can also be installed for comprehensive detection, but these are not shown in this application.) The system controls the blocking component to separate the horizontal section 11 and the vertical section 12, and the corrosion detection component 40 detects the corrosion degree of the sample 131. The material of the sample 131 is the same as that of the long-distance pipeline 20. The sample 131 is constantly exposed to long-distance... The corrosion of the pipeline 20 by natural gas can indirectly reflect the corrosion status of the long-distance pipeline 20. When the corrosion of the sample 131 exceeds the safety standard, or when other sensors in the monitoring system malfunction, a warning signal is sent to an external control terminal via a communication module such as an RS485 module or a LoRa module, and professional personnel are dispatched to the site for handling. Before using the corrosion detection component 40 to test the sample, natural gas needs to be drawn into the horizontal section 11 through the first vacuum valve 62, and then the natural gas in the horizontal section 11 needs to be drawn into the temporary storage pipe 14 through the second vacuum valve 142 to prevent natural gas leakage during maintenance. After maintenance is completed, the second vacuum valve 142 is activated to draw gas from the temporary storage pipe 14 into the horizontal section 11 to avoid energy waste (it should be noted that the second vacuum valve 142 needs to be a bidirectional gas extraction valve type), and the blocking structure is opened to allow the horizontal section 11 and the vertical section 12 to continue to connect. If the long-distance pipeline 20 is corroded, the long-distance pipeline 20 needs to be replaced, and a new sample 131 needs to be set accordingly.

[0032] The above structure allows for the assessment of pipeline damage and corrosion during emergency repairs, enabling proactive preparation and improving repair efficiency.

[0033] Furthermore, the horizontal section 11 is provided with sealing assemblies at both ends. The sealing assemblies include sealing plates 51 disposed in the horizontal section 11, two first rotating shafts 52 disposed at both ends of the sealing plates 51, a first worm gear 53 disposed on the first rotating shafts 52, a second rotating shaft 51 disposed in the horizontal section 11, a first worm 55 disposed on the second rotating shaft 51, and a first motor 56 for driving either of the second rotating shafts 51 to rotate. The first worm gear 53 and the first worm 55 mesh with each other. The first motor 56 is fixed to the outer wall of the horizontal section 11. The sealing plates 51 are used to cover the flow space in the horizontal section 11.

[0034] Under normal circumstances, the sealing plate 51 does not block the flow space of the horizontal section 11. When the liquid level monitoring component sends an abnormal signal, the first motor 56 rotates, driving the second shaft 51 and the first worm gear 55 to rotate. The rotation of the first worm gear 55 then drives the first worm wheel 53 and the first shaft 52 to rotate, thereby driving the sealing plate 51 to rotate, thus opening or blocking the flow space within the horizontal section 11. When the liquid level monitoring component detects an abnormality, in addition to controlling the blocking component to block the horizontal section 11 and the vertical section 12, the system also needs to control the sealing plates 51 at both ends to temporarily block the flow space within the horizontal section 11, waiting for maintenance personnel to come and prevent energy leakage from this node, thus avoiding waste. The worm gear has a self-locking property. This structural choice allows the sealing plate 51 to remain stable when the motor is powered off. Because the safety monitoring of the long-distance pipeline 20 needs to be continuous, the motor only starts when needed, saving power.

[0035] Furthermore, the blocking assembly includes a third rotating shaft 65 disposed on the inner wall of the horizontal section 11 near the vertical section 12, a blocking plate 61 rotatably disposed on the third rotating shaft 65, a second motor 67 disposed on the outer wall of the horizontal section 11, a fourth rotating shaft 63 connected to the second motor 67, a second worm gear 66 disposed on the third rotating shaft 65, and a second worm 54 disposed on the fourth rotating shaft 63. The size of the blocking plate 61 is larger than the size of the flow space in the vertical section 12. The first vacuum valve 62 is disposed on the blocking plate 61. The second worm 54 meshes with the second worm gear 66.

[0036] Understandably, the baffle plate 61 and the blocking plate 51 are identical, activating only after a warning signal is issued. Specifically, the second motor 67 rotates, driving the fourth shaft 63 along with the second worm gear 54. The rotation of the second worm gear 54 then drives the second worm wheel 66 along with the third shaft 65, thereby rotating the baffle plate 61 to block the vertical section 12 and the horizontal section 11. This prevents natural gas from spraying out of the vertical section 12 during emergency repairs.

[0037] Furthermore, the corrosion detection assembly 40 includes a support frame 42 disposed on the outer wall of the vertical section 12, a third motor 41 disposed on the support frame 42, a fifth rotating shaft 45 connected to the third motor 41, a third worm gear 46 connected to the fifth rotating shaft 45, a sixth rotating shaft rotatably disposed on the support frame 42, a third worm wheel 47 connected to the sixth rotating shaft, a support rod 44 connected to the sixth rotating shaft, an annular housing 43 connected to the support rod 44, a gear disc 74 rotatably disposed in the annular housing 43, a fourth motor 73 fixedly connected to the annular housing 43, a gear 48 connected to the fourth motor 73, a first electric telescopic rod 71 fixedly connected to the gear disc 74, and an ultrasonic corrosion detector 72 disposed on the first electric telescopic rod 71. The third worm gear 46 meshes with the third worm wheel 47, and the gear 48 meshes with the gear disc 74. A second electric telescopic rod 80 is disposed on the outer wall of the vertical section 12, and the sealing cover 13 is connected to the second electric telescopic rod 80.

[0038] Understandably, when corrosion detection is required, the second electric telescopic rod 80 raises the sealing cover 13, exposing the sample 131. Then, the third motor 41 drives the sixth rotating shaft, along with the support rod 44, to rotate via a worm gear structure until the annular housing 43 is below the sample 131. Next, the second electric telescopic rod 80 lowers the sample 131 into the annular housing 43, and the first electric telescopic rod 71 drives the probe of the ultrasonic corrosion detector 72 to contact the sample 131 for corrosion detection. Simultaneously, the fourth motor 73 drives the gear 48 to rotate, which in turn drives the gear disc 74, along with the ultrasonic corrosion detector 72, to rotate. The system achieves 360° detection. Simultaneously, the second electric telescopic rod 80 lowers the sample piece 131, allowing detection at all points on the sample piece 131. If the corrosion level at a certain location on the sample piece 131 exceeds the standard, it indicates a high probability of a corresponding problem within the long-distance pipeline 20. Upon arrival, personnel will need to conduct a thorough corrosion inspection of the long-distance pipeline 20. After the corrosion inspection is completed and deemed satisfactory, the second electric telescopic rod 80 raises the sample piece 131, and the third motor 41 rotates the annular housing 43 to a position below and away from the sample piece 131. The second electric telescopic rod 80 then lowers the sealing cover 13 to seal the vertical section 12. The sample piece 131 can be fixed to the sealing cover 13 via a threaded connecting rod 132.

[0039] It should be noted that during normal use, the time can be set to periodically detect sample corrosion. When the corrosion level exceeds the preset standard, an early warning signal will be issued, without the need for synchronous detection with the liquid level monitoring component.

[0040] Furthermore, the liquid level monitoring component includes a liquid tank 91 disposed on the outer wall of the vertical section 12, a connecting pipe 90 connecting the vertical section 12 and the liquid tank, and a liquid level sensor disposed on the liquid tank 91.

[0041] Understandably, warnings are issued via the communication module. The principle of the liquid level monitoring component is that the vertical section 12 and the liquid level in the tank are aligned through the connecting pipe 91. The liquid level sensor (located inside the tank, not shown in the figure) at the liquid level 91 monitors whether the liquid level has reached the maximum allowable threshold. When the liquid level sensor detects a low liquid level, it sends a warning signal through the communication module.

[0042] It should be noted that in this embodiment, the connecting housing 10 is equipped with a sealing structure (such as a gasket) at the connection points with the outside to prevent air leakage. Since this sealing method is relatively conventional, it is not shown in the figure. Each motor, electric telescopic rod, and vacuum valve in the device is powered by a power supply module and controlled by a main control chip and communication module; this is also relatively conventional and will not be elaborated upon. Preferably, a protective shell 30 is provided on the outer shell of the connecting housing 10, housing electronic components such as the corrosion detection component 40 to prevent corrosion. The remaining parts not described in detail are not improved and are consistent with the prior art.

[0043] In some preferred embodiments, vibration sensors, pressure sensors, etc., similar to those in the prior art can also be provided in the connecting housing 10 to achieve more comprehensive monitoring. Since this is not an improvement point of this application, it will not be described in detail.

[0044] In summary, this utility model can determine the extent of pipeline damage and corrosion in advance during emergency repairs, allowing for better preparation and improved repair efficiency.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An intelligent early warning device for unmanned safety hazards at long-distance natural gas pipeline stations, characterized in that, The device includes a connecting shell located between two long-distance pipelines and a monitoring system located within the connecting shell. The connecting shell comprises an integrally formed horizontal section and a vertical section. The two ends of the horizontal section are respectively used to connect to the two long-distance pipelines. A blocking component for blocking natural gas is provided between the horizontal and vertical sections. A sealing cap is provided at the end of the vertical section. The monitoring system includes a liquid level monitoring component and a corrosion detection component located on the vertical section. A sample is provided on the side of the sealing cap near the vertical section. The corrosion detection component is used to detect the sample. A temporary storage pipe is provided on the horizontal section and communicates with it. A first vacuum valve is provided on the blocking component. A baffle plate is provided at the temporary storage pipe. A second vacuum valve is provided on the baffle plate. The intelligent early warning device for unattended safety hazards at the natural gas long-distance pipeline station also includes a power supply module and a communication module.

2. The intelligent early warning device for unmanned safety hazards at natural gas long-distance pipeline stations according to claim 1, characterized in that, The horizontal section is further provided with sealing assemblies at both ends. The sealing assemblies include a sealing plate disposed in the horizontal section, two first rotating shafts disposed at both ends of the sealing plate, a first worm gear disposed on the first rotating shaft, a second rotating shaft disposed in the horizontal section, a first worm gear disposed on the second rotating shaft, and a first motor for driving either of the second rotating shafts to rotate. The first worm gear and the first worm gear mesh with each other, and the first motor is fixed to the outer wall of the horizontal section. The sealing plate is used to cover the flow space in the horizontal section.

3. The intelligent early warning device for unmanned safety hazards at natural gas long-distance pipeline stations according to claim 1, characterized in that, The blocking assembly includes a third rotating shaft on the inner wall of the horizontal section near the vertical section, a blocking plate rotatably mounted on the third rotating shaft, a second motor mounted on the outer wall of the horizontal section, a fourth rotating shaft connected to the second motor, a second worm gear mounted on the third rotating shaft, and a second worm on the fourth rotating shaft. The size of the blocking plate is larger than the size of the flow space in the vertical section. The first vacuum valve is mounted on the blocking plate, and the second worm meshes with the second worm gear.

4. The intelligent early warning device for unmanned safety hazards at natural gas long-distance pipeline stations according to claim 1, characterized in that, The corrosion detection assembly includes a support frame mounted on the outer wall of the vertical section, a third motor mounted on the support frame, a fifth rotating shaft connected to the third motor, a third worm gear connected to the fifth rotating shaft, a sixth rotating shaft rotatably mounted on the support frame, a third worm wheel connected to the sixth rotating shaft, a support rod connected to the sixth rotating shaft, an annular housing connected to the support rod, a geared disc rotatably mounted in the annular housing, a fourth motor fixedly connected to the annular housing, a gear connected to the fourth motor, a first electric telescopic rod fixedly connected to the geared disc, and an ultrasonic corrosion detector mounted on the first electric telescopic rod. The third worm gear meshes with the third worm wheel.

5. The intelligent early warning device for unmanned safety hazards at natural gas long-distance pipeline stations according to claim 4, characterized in that, A second electric telescopic rod is provided on the outer wall of the vertical section, and the sealing cover is connected to the second electric telescopic rod.

6. The intelligent early warning device for unmanned safety hazards at natural gas long-distance pipeline stations according to claim 1, characterized in that, The liquid level monitoring component includes a liquid tank located on the outer wall of the vertical section, a connecting pipe connecting the vertical section and the liquid tank, and a liquid level sensor located on the liquid tank.

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