An on-line monitoring system and method for deep gas and ionic components

Abstract

The application discloses a deep gas and ion component on-line monitoring system and a monitoring method. The system and the method realize real in-situ or near in-situ monitoring, the chemical authenticity of a sample from downhole to an analysis end is maintained to the maximum extent through optimization of a sampling and pretreatment process, synchronous sampling, synchronous analysis and synchronous data reporting on gas and liquid ion parameters are realized through sharing of a power group, a remote signal transmission group and an environment monitoring host, and complete equipment state information such as pump pressure, flow, sensor impedance and power voltage is uploaded through the remote signal transmission, and when it is prompted that a certain module needs to be maintained, accurate positioning can be realized.

Description

Technical Field

[0001] This invention relates to the field of environmental monitoring and geological exploration technology, specifically to a comprehensive monitoring system and method for deep wells, mines, or deep underground environments, which integrates in-situ online monitoring and remote transmission of gas and liquid (ion) components. Background Technology

[0002] In fields such as deep geological structure monitoring (e.g., CCSD - China Continental Scientific Drilling Project), groundwater pollution investigation, mine safety, and geothermal resource development, long-term, continuous, and real-time monitoring of the physicochemical properties of deep underground fluids is required. Traditional monitoring methods mainly rely on periodically dispatching personnel to the field to collect water or gas samples from deep wells using samplers, sealing and storing them before transporting them to the laboratory for offline analysis. This approach suffers from drawbacks such as low efficiency, poor timeliness, susceptibility to sample denaturation, high cost and unsustainability, inability to capture dynamic changes, high labor costs, and difficulty in long-term implementation in harsh deep environments.

[0003] Although some online sensors exist in the existing technology, they are usually single-function, resulting in severely incomplete monitoring parameters (measuring only gas or only liquid), lack of reliable sample pretreatment, low integration and poor coordination, lack of reliable sampling and pretreatment units designed for the special environment of deep wells (such as high pressure, low temperature, easy blockage), and insufficient remote control and data transmission capabilities, making it difficult to meet the needs of modern and automated deep monitoring.

[0004] Based on the above problems, the inventors have conducted in-depth research on deep well sampling and detection schemes in order to design an online monitoring system and method that can solve the above problems. Summary of the Invention

[0005] To overcome the aforementioned problems, the inventors conducted intensive research and designed an online monitoring system and method for deep gas and ion components. This system and method achieves true in-situ or near-in-situ monitoring. By optimizing the sampling and pretreatment process, it maximizes the chemical authenticity of the sample from the well to the analysis end. It integrates the gas fluid group and the liquid fluid group under the same physical framework and control logic. By sharing the power group, the remote signal transmission group, and the environmental monitoring host, it achieves synchronous sampling, synchronous analysis, and synchronous data reporting of gas and liquid ion parameters. It uploads complete equipment status information such as pump pressure, flow rate, sensor impedance, and power supply voltage through remote signal transmission. When a module is indicated to require maintenance, it can be accurately located, transforming the traditional "periodic on-site inspection" into "status-oriented precision maintenance," thus completing this invention.

[0006] Specifically, the purpose of this invention is to provide an online monitoring system for deep gas and ion components, the system comprising, A diaphragm air pump 1 is connected to a pipeline, the inlet section 2 of which extends into a deep well, and the outlet section 3 of which is connected to a gas-liquid separator 4. The gas-liquid separator 4 is provided with a gas outlet pipe 5 at its top and a liquid outlet pipe 6 at its bottom. A gas sensor 7 is connected to the gas outlet pipe 5, a water quality sensor 8 is connected to the liquid outlet pipe 6, and a sampling device 9 is provided at the end of the liquid outlet pipe 6. The gas sensor 7 and water quality sensor 8 are used to simultaneously sample and analyze gas and liquid ions in the deep well.

[0007] A liquid flow meter 10 is installed on the outlet section 3 of the pipeline.

[0008] In the deep well, a water level gauge 11 is installed near the inlet section 2.

[0009] The gas-liquid separator 4 is equipped with a level gauge 12, the zero mark of which is aligned with the top of the interior of the gas-liquid separator 4.

[0010] The system also includes an environmental monitoring host 13, which is connected to the gas sensor 7 and the water quality sensor 8 to receive and analyze information on gas and ion composition in the deep well. The environmental monitoring host 13 is also electrically connected to other components in the online monitoring system to control the working status of other components.

[0011] The environmental monitoring host 13 is equipped with an uplink communication interface for connecting to signals from a remote receiving device.

[0012] The present invention also provides a method for online monitoring of deep gas and ion components, which is implemented by the online monitoring system for deep gas and ion components described above.

[0013] In this monitoring method, a monitoring cycle is initiated every predetermined time interval; Each monitoring cycle includes the following steps: Step 1: Start the diaphragm air pump 1 to extract fluid from the deep well. After being measured by the liquid flow meter 10, the fluid enters the gas-liquid separator 4. Step 2: When the liquid level in the gas-liquid separator 4 rises to the zero mark of the level gauge 12, the water quality sensor 8 starts monitoring and outputs a water quality signal once per minute. After half an hour, the diaphragm air pump 1 stops working. Step 3: After the diaphragm air pump 1 is started, the gas sensor 7 works in real time and transmits the detected gas data information to the environmental monitoring host 17. Step 4: Receive detection signals from gas sensor 7, water quality sensor 8 and water level gauge 13 through environmental monitoring host 17, and remotely transmit the received signals to remote receiving device.

[0014] In step 4, when the information detected by the environmental monitoring host 13 meets any of the following conditions, an alarm prompt is sent to the remote receiving device. The concentration of methane gas exceeds 5%, ammonia nitrogen exceeds 1 mg / L, NO3 exceeds 0.3 mg / L, NO2 exceeds 0.2 mg / L, and the water level in the deep well rises by 20 cm within 1 minute.

[0015] The beneficial effects of this invention include: (1) The online monitoring system and method for deep gas and ionic components provided by the present invention fundamentally changes the state of separate gas and liquid monitoring systems, asynchronous data in time, and spatial mismatch in traditional technologies. It enables researchers to obtain complete geochemical coupling information at the same time point and from the same sample source (or the same environment), such as simultaneously analyzing the correlation between methane generation and nitrate reduction.

[0016] (2) The online monitoring system and method for deep gas and ion components provided by the present invention can automatically issue early warnings according to preset rules (such as sudden changes in water level gauge data, Eh / pH sensor readings exceeding thresholds), which greatly improves the ability to capture sudden geological events (such as pre-earthquake fluid anomalies, pollution leaks).

[0017] (3) According to the online monitoring system and method for deep gas and ion components provided by the present invention, complete equipment status information (such as pump pressure, flow rate, sensor impedance, power supply voltage, etc.) is transmitted remotely. When data analysis or status diagnosis indicates that a certain module needs maintenance, it can be accurately located. The traditional "periodic on-site inspection" is transformed into "status-oriented precision maintenance". Maintenance personnel only need to carry spare parts of specific faulty modules to the site for quick replacement, which greatly reduces on-site working time, travel costs and accident risks. The modular design makes replacement simple and does not require professional engineers to operate.

[0018] (4) According to the online monitoring system and method for deep gas and ionic components provided by the present invention, a multi-level trigger monitoring mechanism is introduced to establish a linkage response relationship between physical parameters and chemical parameters. When physical sensors such as water level and flow rate detect abnormal changes, the sampling frequency of chemical parameters is automatically increased. When certain chemical parameters exceed the preset threshold, an early warning can be issued, thereby initiating enhanced monitoring of related parameters. This adaptive adjustment mechanism based on real-time data forms a complete closed loop from physical signal perception to chemical response enhancement, enabling the system to automatically capture transient events and acquire high-resolution data sequences. Attached Figure Description

[0019] Figure 1 This diagram shows the overall structure of the online monitoring system for deep gases and ion components.

[0020] Explanation of reference numerals in the attached figures 1-Diaphragm air pump, 2-Inlet section, 3-Outlet section, 4-Gas-liquid separator, 5-Gas outlet pipe, 6-Liquid outlet pipe, 7-Gas sensor, 8-Water quality sensor, 9-Sampling device; 10-Liquid flow meter, 11-Water level gauge, 12-Liquid level gauge, 13-Environmental monitoring host. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present invention will become clearer and more apparent.

[0022] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments. Although various aspects of embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated otherwise.

[0023] According to the present invention, an online monitoring system for deep gas and ion components is provided, such as... Figure 1 As shown, the system includes a diaphragm air pump 1 connected to a pipeline, the inlet section 2 of which extends into a deep well, and the outlet section 3 of which is connected to a gas-liquid separator 4. The deep well can be a scientific drilling well, and its depth can be selected and set according to actual working conditions. Correspondingly, the head of the diaphragm air pump 1 is also selected and set according to the depth of the deep well. Preferably, the diaphragm air pump can be a dual-head tandem model KLVP6-E-PB24 with a flow rate of ≥8L / min.

[0024] The gas-liquid separator 4 can be made of PA material and is tubular or cylindrical, with a gas outlet pipe 5 at its top and a liquid outlet pipe 6 at its bottom. A level gauge 12 is installed inside the gas-liquid separator 4, with its zero mark aligned with the inner top of the separator. This level gauge is a capacitive level gauge with a MODBUS 485 protocol output signal of 9600bps, capable of transmitting liquid level information to the environmental monitoring host in real time. Its dimensions are 25×240mm, matching the internal dimensions of the gas-liquid separator 4.

[0025] A gas sensor 7 is connected to the gas outlet pipe 5, and a water quality sensor 8 is connected to the liquid outlet pipe 6. A liquid storage tank 9 is provided at the end of the liquid outlet pipe 6. The storage tank 9 is used to store water samples. If the water sample is fresh water, it is directly discharged into the environment.

[0026] The gas sensor 7 and water quality sensor 8 are used to simultaneously sample and analyze gas and liquid ions in the deep well. In this application, the gas sensor 7 can be an SGA-606 series portable six-in-one gas detector or a ToronMGA multi-gas sensor, capable of simultaneously detecting multiple gases such as methane (CH4), hydrogen (H2), carbon dioxide (CO2), and oxygen (O2). Alternatively, individual gas sensors can be integrated into a series gas sensor module. The water quality sensor 8 can be one or more of the following: Hydrolab HL7 multi-parameter water quality sensor, WD100 4-in-1 water quality sensor, XY-900P, HL7, WTW water quality sensor, capable of simultaneously detecting COD, Eh, DO, pH, and NH4+. 4+ NO 2- and NO 3- Alternatively, individual sensors can be purchased and integrated into a series module to convert chemical signals into electrical signals, which are then input to the environmental monitoring host 13.

[0027] In this application, the fluid in the deep well is extracted into a gas-liquid separator by a diaphragm air pump, and then the gas and liquid are detected separately. This is an effective sample fidelity technology that can ensure that the sample sent into the analyzer is consistent with the composition in the deep well, thereby improving the accuracy of the data.

[0028] In a preferred embodiment, a liquid flow meter 10 is installed on the outlet section 3 of the pipeline. The parameters of the liquid flow meter can be selected as follows: pressure resistance ≤ 0.35 MPa, operating voltage range: DC 3.5-24V, maximum operating current: 15 mA, and flow range 0.2-12 L / min.

[0029] In this application, the liquid flow meter is associated with the environmental monitoring host 13. It has two functions: first, to record the fluid flux, so as to accurately calculate the gas concentration in the deep fluid; second, to view the flow rate changes in real time, so as to remotely determine whether the fluid sampling is working properly.

[0030] Preferably, a water level gauge 11 is installed near the inlet section 2 in the deep well to detect the water level in the deep well in real time, and the detection signal is transmitted to the environmental monitoring host 13 in real time, thereby playing the role of monitoring the water level.

[0031] In this application, the gas outlet pipe 5 can be directly connected to the atmosphere. The gas dissolved in the liquid in the gas-liquid separator 4 overflows upward from the gas-liquid separator 4 and is discharged into the atmosphere through the gas outlet pipe. When flowing through the gas outlet pipe 5, the composition information is obtained by the gas sensor.

[0032] Preferably, the system further includes an environmental monitoring host 13, which is connected to the gas sensor 7 and the water quality sensor 8 to receive and analyze information on gas and ion composition in the deep well. The environmental monitoring host 13 is also electrically connected to other components in the online monitoring system to control their operating status. The environmental monitoring host 13 also simultaneously receives status information from other components, such as pump pressure, flow rate, sensor impedance, and power supply voltage, to obtain real-time information on the operating status of each component. This allows for precise location of components when data analysis or status diagnosis indicates that maintenance is needed, transforming traditional "periodic on-site inspections" into "status-oriented precision maintenance." Maintenance personnel only need to carry spare parts for the specific faulty component to the site for quick replacement, significantly reducing on-site work time, travel costs, and unexpected risks. The other components mentioned in this application refer to components in the monitoring system other than the environmental monitoring host, including the gas sensor module 7, water quality sensor module 8, liquid flow meter 10, water level gauge 11, liquid level gauge 12, lithium battery pack, and power management module.

[0033] In this application, the environmental monitoring host also integrates an uplink communication interface. The uplink communication interface is connected to the remote receiving device signal using Ethernet / 4G / RS485 and other means. It can transmit the detected information to the remote receiving device and receive the instruction information from the remote receiving device. The remote receiving device can be set to a mobile phone.

[0034] In this application, the environmental monitoring host can be selected from the RS-XZJ-100-Y of Jian Da Ren Ke.

[0035] The online monitoring system of this application also includes a 24V / 100Ah lithium battery pack and a power management module to supply power to other components in the system.

[0036] The present invention also provides a method for online monitoring of deep gas and ion components, which is implemented by the online monitoring system for deep gas and ion components described above.

[0037] In this monitoring method, a monitoring cycle is initiated every predetermined time interval; the predetermined time interval is 1 hour or 2 hours.

[0038] Each monitoring cycle includes the following steps: Step 1: Start the diaphragm air pump 1 to extract fluid from the deep well at a flow rate of 0.1 L / min. The liquid is coarsely filtered by filter 10 and metered by liquid flow meter 10 before entering the gas-liquid separator 4. Step 2: When the liquid level in the gas-liquid separator 4 rises to the zero mark of the level gauge 12, the water quality sensor module 8 starts monitoring and outputs a water quality signal once per minute, transmitting the water quality signal to the environmental monitoring host. After half an hour, the diaphragm air pump 1 stops working. Step 3: After the diaphragm air pump 1 is started, the gas sensor 7 works in real time and transmits the detected gas data information to the environmental monitoring host 13. Step 4: Receive detection signals from gas sensor module 7, water quality sensor module 8 and water level gauge 11 through environmental monitoring host 13, and remotely transmit the received signals to remote receiving device.

[0039] Preferably, in step 4, when the information detected by the environmental monitoring host 13 meets any one of the following conditions, an alarm prompt is sent to the remote receiving device; The concentration of methane gas exceeds 5%, ammonia nitrogen exceeds 1 mg / L, NO3 exceeds 0.3 mg / L, NO2 exceeds 0.2 mg / L, and the water level in the deep well rises by 20 cm within 1 minute.

[0040] The present invention has been described above with reference to preferred embodiments; however, these embodiments are merely exemplary and illustrative. Various substitutions and modifications can be made to the present invention based on these embodiments, all of which fall within the scope of protection of the present invention.

Claims

1. A deep gas and ion component online monitoring system, characterized in that, The system includes, A diaphragm air pump (1) is connected to a pipeline, the inlet section (2) of which extends into a deep well, and the outlet section (3) of which is connected to a gas-liquid separator (4). The gas-liquid separator (4) is provided with an outlet pipe (5) at the top and an outlet pipe (6) at the bottom. A gas sensor (7) is connected to the gas outlet pipe (5), a water quality sensor (8) is connected to the liquid outlet pipe (6), and a sampling device (9) is provided at the end of the liquid outlet pipe (6). The gas sensor (7) and water quality sensor (8) are used to simultaneously sample and analyze gas and liquid ions in the deep well.

2. The online monitoring system for deep gas and ion components according to claim 1, characterized in that, A liquid flow meter (10) is installed on the outlet section (3) of the pipeline.

3. The online monitoring system for deep gas and ion components according to claim 1, characterized in that, In the deep well, a water level gauge (11) is installed near the inlet section (2).

4. The online monitoring system for deep gas and ion components according to claim 1, characterized in that, A level gauge (12) is provided in the gas-liquid separator (4), and the zero mark of the level gauge is aligned with the top of the interior of the gas-liquid separator (4).

5. The online monitoring system for deep gas and ion components according to claim 1, characterized in that, The system also includes an environmental monitoring host (13), which is connected to the gas sensor (7) and the water quality sensor (8) to receive and analyze information on gas and ion composition in the deep well. The environmental monitoring host (13) is also electrically connected to other mechanisms in the online monitoring system to control the working status of other mechanisms.

6. The online monitoring system for deep gas and ion components according to claim 1, characterized in that, An uplink communication interface is provided on the environmental monitoring host (13) for connecting to the signal of the remote receiving device.

7. A method for online monitoring of deep gas and ionic components, characterized in that, This method is implemented using an online monitoring system for deep gas and ion components as described in any one of claims 1 to 6.

8. The method for online monitoring of deep gas and ion components according to claim 7, characterized in that, In this monitoring method, a monitoring cycle is initiated at predetermined intervals. Each monitoring cycle includes the following steps: Step 1: Start the diaphragm air pump (1) to extract fluid from the deep well. After being measured by the liquid flow meter (10), the fluid enters the gas-liquid separator (4). Step 2: When the liquid level in the gas-liquid separator (4) rises to the zero mark of the level gauge (12), the water quality sensor (8) starts monitoring and outputs a water quality signal once per minute. After half an hour, the diaphragm air pump (1) stops working. Step 3: After the diaphragm air pump (1) is started, the gas sensor (7) works in real time and transmits the detected gas data information to the environmental monitoring host (13). Step 4: Receive the detection signals from the gas sensor (7), water quality sensor (8) and water level gauge (11) through the environmental monitoring host (13), and remotely transmit the received signals to the remote receiving device.

9. The method for online monitoring of deep gas and ion components according to claim 8, characterized in that, In step 4, when the information detected by the environmental monitoring host (13) meets any of the following conditions, an alarm prompt is sent to the remote receiving device; The concentration of methane gas exceeds 5%, ammonia nitrogen exceeds 1 mg / L, NO3 exceeds 0.3 mg / L, NO2 exceeds 0.2 mg / L, and the water level in the deep well rises by 20 cm within 1 minute.

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