Low power consumption underground combustible gas monitor and monitoring method

Abstract

The present invention relates to the field of combustible gas monitoring technology, and more specifically, to a low-power underground combustible gas monitor and a monitoring method, comprising a monitor body, wherein an air intake assembly for actively allowing gas to enter is arranged on one side of the monitor body; the air intake assembly comprises an outer cover, wherein a plurality of air intake holes are arranged in a circular array on the side wall of the outer cover, and the central axis of the air intake holes is perpendicular to the side wall of the monitor body; a universal ring is fixedly arranged on the inner wall of the air intake hole, wherein the outer surface of the universal ring is sealed with the inner wall of the air intake hole, and an air intake pipe is rotatably arranged in the middle of the universal ring. During the rotation of the cover, the force on the air intake pipe is in a changing state, and since the mass of the end of the air intake pipe close to the outside of the air intake hole is greater than the end of the air intake pipe placed on the inside of the air intake hole, the air intake pipe will shake during the rotation due to different positions, and the end of the air intake pipe placed on the inside of the outer cover will reciprocately hit the filter element, thereby cleaning the dust attached to the surface of the filter element.

Description

Technical Field

[0001] The invention relates to the technical field of combustible gas monitoring, in particular to a low-power underground combustible gas monitor and a monitoring method. Background Art

[0002] Combustible gas refers to a substance that can be ignited and is in a gaseous state at normal temperature and pressure. This type of gas releases a large amount of energy during the combustion process. The underground combustible gas monitor is a device specifically used to monitor combustible gas leaks in underground gas pipelines and other places; the underground combustible gas monitor is widely used in monitoring scenarios of methane gas concentration, such as gas pipelines, drainage pipelines, underground pipe galleries, etc. Through the large-scale application of this monitor, real-time monitoring of methane concentration in underground gas pipelines can be achieved, effectively preventing gas pipelines from leaking and encountering open flames to cause explosions in large areas of underground space. At the same time, its high sensitivity can also monitor minor gas leaks caused by early loosening of valves, and try to avoid all potential safety hazards.

[0003] Underground combustible gas monitors mostly detect by actively inhaling the surrounding gas. Due to the complex underground environment, some underground combustible gas monitors are placed in wells. Rainwater may enter on rainy days. Being in a humid environment for a long time may cause damage to internal components. Secondly, when air is taken in multiple times, it will be accompanied by the entry of particulate matter in the gas, which may cause the air inlet to be blocked, resulting in insufficient air intake in the later stage, which is not conducive to the monitoring of gas in the well. Because the underground combustible gas monitor is installed underground, it is not convenient to disassemble and assemble repeatedly. If there is a power outage, replacement is more cumbersome. Summary of the invention

[0004] In response to the problems in the prior art, the present invention provides a low-power underground combustible gas monitor and a monitoring method. The underground gas leakage monitor is widely used in gas pipelines in underground pipe networks and valve wells. It is powered by a lithium battery and monitored by a laser sensor. By adopting an intelligent power management module, the power consumption of the device can be significantly reduced and the battery life can be extended, thereby ensuring the long-term stable operation of the monitoring device. For example, the intelligent power management module can dynamically adjust the power consumption of the device according to the actual working requirements of the monitoring device.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a low-power underground combustible gas monitor, comprising a monitor body, one side of which is provided with an air intake component for actively allowing gas to enter;

[0006] The air intake assembly includes an outer cover, a side wall of the outer cover is provided with a plurality of air intake holes, the air intake holes are arranged in a circular array, and the central axes of the air intake holes are perpendicular to the side wall of the monitor body;

[0007] A universal ring is fixedly provided on the inner wall of the air inlet hole, the outer part of the universal ring is sealed with the inner wall of the air inlet hole, an air inlet pipe is rotatably provided in the middle of the universal ring, the air inlet pipe passes through the universal ring, and the mass of one end of the air inlet pipe close to the outer side of the air inlet hole is greater than that of the other end of the air inlet pipe placed on the inner side of the air inlet hole.

[0008] Specifically, one end of the air inlet pipe close to the outside of the air inlet hole is arranged in a cone shape, and the other end of the air inlet hole extends through the air inlet hole to the inside of the outer cover.

[0009] Specifically, a driving motor is fixedly connected to the middle of one side of the monitoring instrument body close to the outer cover, and the output end of the driving motor is fixedly connected to the inner wall of the outer cover.

[0010] Specifically, a filter element is bonded between the outer cover and the side wall of the monitor body, and the filter element includes an inner arc filter and an air intake filter. The inner arc filter and the air intake filter are integrally formed, and the arc top of the inner arc filter is in contact with the outer cover, and the inner arc filter is bonded to the monitor body close to the inner ring.

[0011] Specifically, one side of the air intake filter is arranged in a wave shape to form an air filtering protrusion, the end of the air filtering protrusion is arranged in an acute angle, and the acute angle end of the air filtering protrusion is inclined away from the middle part of the outer cover.

[0012] Specifically, monitoring air holes are opened in the middle of the inner arc filter and the air intake filter, an air intake pump is fixedly installed in the monitor body, one side of the monitor body is connected to the monitoring air hole through an air pipe, and the other end of the air intake pump is connected to the detector.

[0013] A low-power underground combustible gas monitoring method includes a monitoring module, a sensor module, an intelligent power management module and a wireless communication module.

[0014] The monitoring module includes a natural gas concentration detector, a water level monitor and an alarm;

[0015] The sensing module includes a laser sensor and a catalytic combustion sensor;

[0016] The intelligent power management module includes a power monitoring module and a power consumption control module.

[0017] The power monitoring module monitors the power supply voltage and current in real time to ensure that the equipment operates within a safe power supply range;

[0018] Power consumption control module equipment's working status and actual needs, dynamically adjust the equipment's power consumption;

[0019] The wireless communication module is mainly responsible for transmitting the combustible gas concentration data collected by the monitoring equipment to the remote monitoring center via wireless means.

[0020] Specifically, the wireless communication module includes a data transmission module, a communication module, a signal stabilization module and a remote monitoring module;

[0021] The data transmission module sends the data collected by the monitoring equipment to the remote monitoring center by wireless means, realizing real-time data transmission and remote monitoring;

[0022] The communication module supports a variety of communication protocols to meet the needs of different application scenarios. The real-time transmission of communication module data ensures the timeliness and accuracy of monitoring data.

[0023] Stable signal: Maintain stable signal transmission in complex environments to ensure data accuracy and reliability;

[0024] Remote monitoring uses communication modules to achieve remote monitoring and management of monitoring equipment.

[0025] Specifically, when the monitoring device needs to work, the power consumption control module will receive instructions from the microprocessor or other controller and adjust the power state of the device according to the instructions; when the device is in low power consumption mode, the power consumption control module will limit the current consumption of the device and shut down unnecessary power supply;

[0026] When the device requires high performance, the power consumption control module will provide sufficient power to meet the performance requirements of the device.

[0027] Beneficial effects of the present invention:

[0028] (1) The low-power underground combustible gas monitor and monitoring method described in the present invention are different from the prior art in that the force on the air intake pipe is in a changing state during the rotation of the outer cover. Since the mass of the end of the air intake pipe close to the outside of the air intake hole is greater than the end of the air intake pipe located inside the air intake hole, the air intake pipe will shake due to different positions during the rotation process. During the shaking of the air intake pipe, the end of the air intake pipe located inside the outer cover will reciprocately hit the filter element, thereby cleaning the dust attached to the surface of the filter element.

[0029] (2) The low-power underground combustible gas monitor and monitoring method described in the present invention can significantly reduce the power consumption of the device and extend the battery life by adopting an intelligent power management module, thereby ensuring the long-term stable operation of the monitoring device; for example, the intelligent power management module can dynamically adjust the power consumption of the device according to the actual working requirements of the monitoring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is the position diagram of the filter element and the monitoring instrument body of the present invention;

[0033] Figure 3 It is a schematic diagram of the three-dimensional structure of the filter element of the present invention;

[0034] Figure 4 is a cross-sectional view of an air intake assembly of the present invention;

[0035] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at A in the middle;

[0036] Figure 6 It is a cross-sectional view of the solid filter element of the present invention;

[0037] Figure 7 For the present invention Figure 6 Schematic diagram of the structure at B in the middle;

[0038] Figure 8 It is a schematic diagram of the three-dimensional structure of the air intake pump and the air pipe of the present invention.

[0039] In the figure: 1. Monitor body; 2. Air intake assembly; 26. Outer cover; 21. Air intake hole; 22. Universal ring; 23. Air intake pipe; 3. Filter element; 31. Inner arc filter; 32. Air intake filter; 321. Air filter protrusion; 33. Monitoring air hole; 4. Drive motor; 6. Detector; 61. Air pipe; 62. Air intake pump. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0041] like Figure 1-Figure 8 The low-power underground combustible gas monitor of the present invention comprises a monitor body 1, and an air intake component 2 for actively allowing gas to enter is provided on one side of the monitor body 1;

[0042] The air intake assembly 2 includes an outer cover 26, and a plurality of air intake holes 21 are formed on the side wall of the outer cover 26. The air intake holes 21 are arranged in a circular array, and the central axes of the air intake holes 21 are perpendicular to the side wall of the monitor body 1;

[0043] A universal ring 22 is fixedly provided on the inner wall of the air inlet hole 21, and the outer part of the universal ring 22 is sealed with the inner wall of the air inlet hole 21. An air inlet pipe 23 is rotatably provided in the middle of the universal ring 22, and the air inlet pipe 23 passes through the universal ring 22. The mass of one end of the air inlet pipe 23 close to the outer side of the air inlet hole 21 is greater than that of the other end of the air inlet pipe 23 placed on the inner side of the air inlet hole 21.

[0044] The air intake assembly 2 can facilitate the active collection of underground gas by the monitor, wherein the gas can enter from the air intake hole 21. When the monitor is installed together, the air intake end of the air intake pipe 23 faces downward due to gravity, which can achieve air intake while preventing dust from falling in. During the rotation of the outer cover 26, the dust in the air hole 21 can be thrown out by centrifugal force, further ensuring the smoothness of air intake, which is conducive to the active inhalation of the gas around the monitor;

[0045] In rainy weather, since the mass of the end outside the air inlet 21 is greater than the end of the air inlet pipe 23 placed inside the air inlet 21, rainwater flows from top to bottom and will not enter the monitor body 1, thereby ensuring the working environment of the internal components.

[0046] Specifically, one end of the air inlet pipe 23 close to the outside of the air inlet hole 21 is arranged in a cone shape, and the other end of the air inlet hole 21 passes through the air inlet hole 21 and extends to the inside of the outer cover 26 .

[0047] One end of the air intake pipe 23 close to the outside of the air intake hole 21 is set in a cone shape to ensure air intake while preventing rainwater from entering. During the rotation of the outer cover 26, the air intake pipe 23 will rotate with the universal ring 22 as the axis under the action of centrifugal force, and the dirt attached to the inner wall of the air intake pipe 23 will be thrown out during the rotation.

[0048] Specifically, a driving motor 4 is fixedly connected to the middle of one side of the monitoring instrument body 1 close to the outer cover 26 , and an output end of the driving motor 4 is fixedly connected to the inner wall of the outer cover 26 .

[0049] The outer cover 26 is driven to rotate by controlling the rotation of the driving motor 4 , and the air inlet pipe 23 is driven to rotate synchronously during the rotation of the outer cover 26 .

[0050] Specifically, a filter element 3 is bonded between the outer cover 26 and the side wall of the monitor body 1, and the filter element 3 includes an inner arc filter 31 and an air intake filter 32. The inner arc filter 31 and the air intake filter 32 are integrally formed, and the arc top position of the inner arc filter 31 contacts the outer cover 26, and the inner arc filter 31 is bonded to the monitor body 1 near the inner ring.

[0051] In the process of the air intake pipe 23 rotating with the outer cover 26, since the outer cover 26 is set in a vertical state, the downward force on the air intake pipe 23 located at the bottom of the outer cover 26 is the centrifugal force plus its own gravity (N+G), and the downward force on the air intake pipe 23 located at the upper part of the outer cover 26 is (GN, gravity is G, centrifugal force is N). The air intake pipe 23 is made of metal, and its own gravity is greater than the centrifugal force. Therefore, the force on the air intake pipe 23 is in a changing state during the rotation of the outer cover 26. Since the mass of the end of the air intake pipe 23 close to the outside of the air inlet hole 21 is greater than that of the end of the air intake pipe 23 located inside the air inlet hole 21, the air intake pipe 23 will shake due to different positions during the rotation. During the shaking of the air intake pipe 23, the end of the air intake pipe 23 located inside the outer cover 26 will reciprocally hit the filter 3, thereby cleaning the dust attached to the surface of the filter 3.

[0052] The side arc filter 31 and the air inlet filter 32 both filter the incoming gas and dust in the air to prevent excessive dust from entering the detector 6 and causing damage to the detector 6 .

[0053] Specifically, one side of the air intake filter 32 is arranged in a wave shape to form an air filtering protrusion 321 , and the end of the air filtering protrusion 321 is arranged in an acute angle shape, and the acute angle end of the air filtering protrusion 321 is inclined away from the middle of the outer cover 26 .

[0054] The filter protrusion 321 of the air intake filter 32 filters the incoming gas. At the same time, the wavy setting of the filter protrusion 321 can increase the contact area with the incoming gas and better filter the gas. Secondly, it can also block the inner end of the air intake pipe 23 to prevent larger particles from entering. The acute-angle end of the filter protrusion 321 is tilted away from the middle of the outer cover 26 to facilitate the falling of particles attached to the outer wall of the filter protrusion 321, and most of them fall to the bottom of the outer cover 26, and a small part can slide out of the air intake pipe 23. During the rotation of the air intake pipe 23, the inner end of the air intake pipe 23 reciprocates to knock the filter protrusion 321, which can accelerate the falling of particles attached to the outer wall of the filter protrusion 321, thereby ensuring its filtering effect.

[0055] Specifically, a monitoring air hole 33 is opened in the middle of the inner arc filter 31 and the air intake filter 32, and an air intake pump 62 is fixedly installed in the monitor body 1. One side of the monitor body 1 is connected to the monitoring air hole 33 through the air pipe 61, and the other end of the air intake pump 62 is connected to the detector 6.

[0056] The inner arc filter 31 is bonded to the air inlet filter 32 on the side wall of the monitor body 1 to fix it. At the same time, the arc top position of the inner arc filter 31 contacts the outer cover 26 to prevent particles from entering the drive motor 4 and causing damage to the drive motor 4, thereby providing a stable working environment for the drive motor 4. The filtered gas enters the air pipe 61 through the monitoring air hole 33 and is detected by the detector 6, which is convenient and quick.

[0057] The low-power underground combustible gas monitoring method includes a monitoring module, a sensor module, an intelligent power management module and a wireless communication module.

[0058] The monitoring module includes a natural gas concentration detector, a water level monitor and an alarm;

[0059] The sensing module includes a laser sensor and a catalytic combustion sensor;

[0060] Laser sensors are based on tunable laser spectral absorption technology (such as TDLAS), which has unique selectivity for combustible gases such as methane, improving the accuracy and timeliness of monitoring; the laser sensor circuit is optimized to reduce standby power consumption and working power consumption, while improving the sensitivity of the sensor to combustible gases, ensuring accurate monitoring under low power consumption conditions;

[0061] The catalytic combustion sensor uses the heat generated by the combustion of combustible gas on the catalyst surface to change the thermistor inside the sensor, thereby measuring the concentration of combustible gas.

[0062] The sensor module can monitor the concentration of combustible gas in real time and sound an alarm when the concentration exceeds the set threshold. This helps to promptly discover and deal with potential safety hazards; it has high precision and long-term stability, can accurately measure changes in combustible gas concentration, ensure the reliability of monitoring results, and has anti-interference function, which can resist the influence of external interference factors and improve the accuracy of monitoring results. Through the cooperation of wireless communication modules, remote data transmission and real-time monitoring can achieve 24-hour uninterrupted monitoring, greatly improving management efficiency.

[0063] The intelligent power management module includes a power monitoring module and a power consumption control module.

[0064] The power monitoring module monitors the power supply voltage and current in real time to ensure that the equipment operates within a safe power supply range;

[0065] Power consumption control module equipment's working status and actual needs, dynamically adjust the equipment's power consumption;

[0066] The power consumption control module dynamically adjusts the power consumption of the device according to the device's working status and actual needs. For example, when the device is in standby mode, the power consumption is reduced to extend the battery life; when the device needs to work, the power consumption is increased to meet performance requirements.

[0067] The application of intelligent power management modules is crucial in low-power underground combustible gas monitoring. Since monitoring equipment is usually deployed in environments where wiring is difficult, such as underground pipe networks, battery life becomes a key factor limiting the stable operation of the equipment. By adopting an intelligent power management module, the power consumption of the equipment can be significantly reduced and the battery life can be extended, thereby ensuring the long-term stable operation of the monitoring equipment; for example, the intelligent power management module can dynamically adjust the power consumption of the equipment according to the actual working needs of the monitoring equipment. For example, when the device is in standby mode, the module can turn off unnecessary power supply to reduce power consumption; when the device needs to collect data, the module can provide sufficient power to meet the needs of data collection. In addition, the module can also monitor the power supply voltage and current in real time to ensure that the equipment operates within a safe power supply range and avoid damage to the equipment due to abnormal power supply voltage or excessive current;

[0068] The wireless communication module is mainly responsible for transmitting the combustible gas concentration data collected by the monitoring equipment to the remote monitoring center via wireless means.

[0069] Specifically, the wireless communication module includes a data transmission module, a communication module, a signal stabilization module and a remote monitoring module;

[0070] The data transmission module sends the data collected by the monitoring equipment to the remote monitoring center by wireless means, realizing real-time data transmission and remote monitoring;

[0071] The communication module supports multiple communication protocols, such as NB-IoT, LoRa, and Zigbee, to meet the needs of different application scenarios. The real-time transmission of communication module data ensures the timeliness and accuracy of monitoring data.

[0072] Stable signal: Maintain stable signal transmission in complex environments to ensure data accuracy and reliability;

[0073] Remote monitoring uses communication modules to achieve remote monitoring and management of monitoring equipment.

[0074] Specifically, when the monitoring device needs to work, the power consumption control module will receive instructions from a microprocessor or other controller and adjust the power state of the device according to the instructions; when the device is in low power mode, the power consumption control module will limit the current consumption of the device and shut down unnecessary power supply; when the device requires high performance, the power consumption control module will provide sufficient power to meet the performance requirements of the device.

[0075] The intelligent power management module plays an important role in the low-power underground combustible gas monitoring method. By adopting this module, the power consumption of the equipment can be significantly reduced, the battery life can be extended, and the reliability and stability of the equipment can be improved, thereby ensuring the long-term stable operation of the monitoring equipment.

[0076] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. Low power consumption underground combustible gas monitor, characterized by: It comprises a monitoring instrument body (1), wherein one side of the monitoring instrument body (1) is provided with an air intake component (2) for actively allowing gas to enter; The air intake assembly (2) comprises an outer cover (26), a side wall of the outer cover (26) is provided with a plurality of air intake holes (21), the air intake holes (21) are arranged in a circular array, and the central axes of the air intake holes (21) are perpendicular to the side wall of the monitor body (1); A universal ring (22) is fixedly arranged on the inner wall of the air inlet hole (21), the outer portion of the universal ring (22) is sealed with the inner wall of the air inlet hole (21), an air inlet pipe (23) is rotatably arranged in the middle of the universal ring (22), the air inlet pipe (23) passes through the universal ring (22), and the mass of one end of the air inlet pipe (23) close to the outer side of the air inlet hole (21) is greater than that of one end of the air inlet pipe (23) located on the inner side of the air inlet hole (21); A drive motor (4) is fixedly connected to the middle of a side of the monitor body (1) close to the outer cover (26), and an output end of the drive motor (4) is fixedly connected to an inner wall of the outer cover (26); A filter element (3) is bonded between the outer cover (26) and the side wall of the monitor body (1).

2. The low power consumption underground combustible gas monitor according to claim 1 is characterized in that: One end of the air inlet pipe (23) close to the outside of the air inlet hole (21) is arranged in a cone shape, and the other end of the air inlet hole (21) passes through the air inlet hole (21) and extends to the inside of the outer cover (26).

3. The low power consumption underground combustible gas monitor according to claim 1 is characterized in that: The filter element (3) comprises an inner arc filter (31) and an air intake filter (32), wherein the inner arc filter (31) and the air intake filter (32) are integrally formed, the arc top of the inner arc filter (31) contacts the outer cover (26), and the inner arc filter (31) is bonded to the monitor body (1) near the inner ring.

4. The low power consumption underground combustible gas monitor according to claim 3 is characterized in that: One side of the air inlet filter (32) is arranged in a wave shape to form an air filtering protrusion (321), the end of the air filtering protrusion (321) is arranged in an acute angle shape, and the acute angle end of the air filtering protrusion (321) is arranged inclined away from the middle of the outer cover (26).

5. The low power consumption underground combustible gas monitor according to claim 4 is characterized in that: A monitoring air hole (33) is provided in the middle of the inner arc filter (31) and the air intake filter (32); an air intake pump (62) is fixedly arranged in the monitor body (1); one side of the monitor body (1) is connected to the monitoring air hole (33) via an air pipe (61); and the other end of the air intake pump (62) is connected to the detector (6).

6. A low-power underground combustible gas monitoring method, applied to the low-power underground combustible gas monitor according to any one of claims 1 to 5, characterized in that: Including monitoring module, sensor module, intelligent power management module and wireless communication module, The monitoring module includes a natural gas concentration detector, a water level monitor and an alarm; The sensing module includes a laser sensor and a catalytic combustion sensor; The intelligent power management module includes a power monitoring module and a power consumption control module. The power monitoring module monitors the power supply voltage and current in real time to ensure that the equipment operates within a safe power supply range; The power consumption control module dynamically adjusts the power consumption of the device according to the working status and actual needs of the device; The wireless communication module is mainly responsible for transmitting the combustible gas concentration data collected by the monitoring equipment to the remote monitoring center via wireless means.

7. The low-power underground combustible gas monitoring method according to claim 6 is characterized in that: The wireless communication module includes a data transmission module, a communication module, a signal stabilization module and a remote monitoring module; The data transmission module sends the data collected by the monitoring equipment to the remote monitoring center by wireless means, realizing real-time data transmission and remote monitoring; The communication module supports a variety of communication protocols to meet the needs of different application scenarios. The real-time transmission of communication module data ensures the timeliness and accuracy of monitoring data. Stable signal: Maintain stable signal transmission in complex environments to ensure data accuracy and reliability; Remote monitoring uses communication modules to achieve remote monitoring and management of monitoring equipment.

8. The low-power underground combustible gas monitoring method according to claim 7 is characterized in that: When the monitoring device needs to work, the power consumption control module will receive instructions from the microprocessor or other controller and adjust the power state of the device according to the instructions; when the device is in low power consumption mode, the power consumption control module will limit the current consumption of the device and shut down unnecessary power supply; When the device requires high performance, the power consumption control module will provide sufficient power to meet the performance requirements of the device.

Images