Processing device, gas extraction system and monitoring method

Abstract

The application discloses a processing device, a gas extraction system and a monitoring method. The processing device comprises a main body, a first port, a second port, a cleaning assembly and a third port. The first port is provided with a first control valve to control the conduction or disconnection of the gas extraction pipeline and the cavity. The second port is arranged on the upper part of the main body and is provided with a second control valve. The second control valve has a first state and a second state. In the first state, the cavity is communicated with the negative pressure extraction pipeline. In the second state, the cavity is communicated with the air pipeline. The cleaning assembly is used for cleaning the inner wall surface of the cavity. The third port is used for discharging the dirt in the cavity. The processing device of the embodiment of the application can separate the gas and the dirt in the gas extraction pipeline, and improve the cleaning and discharging effect of the dirt.

Description

Technical Field

[0001] This invention belongs to the field of gas extraction technology, specifically relating to a processing device, a gas extraction system, and a monitoring method. Background Technology

[0002] When coal mines drain gas, they usually suck water, mud, slag and other contaminants from the gas wells into the pipelines, which can reduce the efficiency of gas drainage. Currently, negative pressure drainage is usually used when draining gas, and water dischargers are used to remove the contaminants from the pipelines.

[0003] The water drainers in related technologies achieve water discharge through negative pressure, buoyancy, gravity, magnetism, etc. However, because dirt can adhere to the inner wall of the cavity, it can easily lead to problems such as untimely water discharge and blockage of the water discharge pipe, which affects the gas extraction work and requires frequent maintenance. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide a processing device capable of separating gas and contaminants in gas extraction pipelines, thereby improving the efficiency of contaminant removal.

[0005] An embodiment of the present invention also proposes a gas extraction system.

[0006] An embodiment of the present invention also proposes a gas extraction monitoring method.

[0007] The processing apparatus of this invention includes:

[0008] The main body has a cavity;

[0009] A first port is located on the upper part of the main body and is connected to a gas extraction pipeline. A first control valve is provided at the first port to control the connection or disconnection between the gas extraction pipeline and the cavity.

[0010] The second port is located on the upper part of the main body. A second control valve is provided at the second port. The second port is connected to the negative pressure extraction pipeline and the air pipeline through the second control valve. The second control valve has a first state and a second state. In the first state, the cavity is connected to the negative pressure extraction pipeline. In the second state, the cavity is connected to the air pipeline.

[0011] A cleaning assembly is disposed within the cavity and is used to clean the inner wall surface of the cavity;

[0012] The third port is located at the lower part of the main body, and a third control valve is provided at the third port to control the opening or closing of the third port. The third port is used to discharge dirt from the cavity.

[0013] The processing device of this invention can separate gas and sludge in gas extraction pipelines, thereby improving the sludge removal effect.

[0014] In some embodiments, the main body includes a first housing, the inner cavity of which is cylindrical, and the cleaning assembly includes:

[0015] A shaft, which is pivotally connected to the main body, and a portion of the shaft is disposed within the cavity;

[0016] A cleaning component is provided on the shaft and abuts against the inner wall surface of the cavity;

[0017] A drive unit is connected to the shaft to drive the shaft and the cleaning component to rotate.

[0018] In some embodiments, the main body further includes a second housing, the inner cavity of the second housing being conical, the second housing being disposed at the lower part of the first housing, the third port being disposed at the lower end of the second housing, and a slag collection assembly being provided in the inner cavity of the second housing, the slag collection assembly comprising:

[0019] The spiral blade is a variable diameter spiral blade, which is located at the lower end of the shaft and is coaxial with the shaft. The outer wall of the spiral blade is in contact with the inner wall of the second housing.

[0020] In some embodiments, a connecting assembly is provided between the first housing and the second housing, the connecting assembly comprising:

[0021] The first flange is disposed on the outer wall of the first housing, and the lower end of the first housing has an inner sleeve;

[0022] The second flange is provided on the second housing. The upper end of the second housing has an outer sleeve, and the outer sleeve and the inner sleeve are fitted together.

[0023] A sealing component is disposed between the inner sleeve and the outer sleeve;

[0024] A connector is disposed between the first flange and the second flange.

[0025] In some embodiments, the processing device further includes a fourth port, at which a fourth control valve is provided. The fourth port is located on the side wall of the lower part of the first housing and is used to discharge the supernatant in the cavity.

[0026] In some embodiments, the processing apparatus further includes a first detection component disposed on the body to detect the weight of contaminants within the body; and / or

[0027] The processing device further includes a second detection component disposed on the main body to detect the liquid level within the cavity; and / or

[0028] The first control valve, the second control valve, and the fourth solenoid valve are all solenoid valves, and the third control valve is a solenoid rotary valve; and / or

[0029] The spiral blade is a shaftless spiral blade.

[0030] The gas extraction system of this invention includes:

[0031] A negative pressure extraction pipeline, which is connected to a negative pressure extraction device to create a negative pressure inside the negative pressure extraction pipeline;

[0032] Multiple gas extraction pipelines are arranged in the formation. Each gas extraction pipeline and the negative pressure extraction pipeline are provided with a treatment device. The treatment device is the treatment device described in any of the above embodiments. The treatment device is used to separate the gas in the gas extraction pipeline and allow the gas to flow out of the treatment device through the negative pressure extraction pipeline.

[0033] A control system is used to control the operation of the processing device to enable the processing device to clean and discharge waste.

[0034] The gas extraction monitoring method of this invention monitors the gas extraction pipeline based on the gas extraction system described in the above embodiments. The gas extraction monitoring method includes:

[0035] The weight of the waste and the liquid level in the cavity of the treatment device are obtained;

[0036] Determine whether to open the third port to discharge the precipitate, or determine whether to open the fourth port to discharge the supernatant;

[0037] The number of times the third port and the fourth port are turned on is periodically detected, and the turning frequency of the third port and the fourth port is obtained.

[0038] Determine whether the opening frequency of the third port is greater than the first threshold; if so, issue a warning signal.

[0039] Determine whether the opening frequency of the fourth port is greater than the second threshold; if so, issue a warning signal.

[0040] Determine whether the opening frequency of the third port is less than the third threshold. If so, issue a warning signal.

[0041] Determine whether the opening frequency of the fourth port is less than the fourth threshold. If so, issue a warning signal.

[0042] In some embodiments, determining whether to open the third port to discharge the precipitate, or determining whether to open the fourth port to discharge the supernatant, includes:

[0043] When the liquid level in the treatment device reaches the set fifth threshold, a waste discharge signal is issued.

[0044] Determine whether the weight of the waste in the treatment device has reached the sixth threshold;

[0045] If not, the fourth port is opened to drain the supernatant;

[0046] If so, the fourth port is opened to drain the supernatant, and then the third port is opened to drain the precipitate.

[0047] In some embodiments, the sixth threshold is (1.6~3)ρV1+ρV2, where ρ is the density of the supernatant, V1 is the volume of contaminants filling the inner cavity of the second housing, and V2 is the volume of contaminants above the second housing when the liquid level in the treatment device reaches the set fifth threshold. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the structure of a processing device according to an embodiment of the present invention.

[0049] Figure 2 yes Figure 1 A magnified structural diagram of part A in the middle.

[0050] Figure 3 This is a process flow diagram of a gas extraction and monitoring method according to an embodiment of the present invention.

[0051] Figure 4 This is a process flow diagram of a gas extraction and monitoring method according to another embodiment of the present invention.

[0052] Figure label:

[0053] First shell 11, second shell 12;

[0054] First port 21, second port 22, third port 23, fourth port 24;

[0055] First control valve 31, second control valve 32, third control valve 33, fourth control valve 34, first detection component 35, second detection component 36;

[0056] Sweeping assembly 4, shaft 41, sweeping component 42, drive unit 43, protective cover 44;

[0057] Spiral blade 45;

[0058] Connection assembly 6, first flange 61, second flange 62, sealing component 63, connector 64, inner sleeve 65, outer sleeve 66;

[0059] Negative pressure extraction pipeline 7;

[0060] Gas extraction pipeline 8. Detailed Implementation

[0061] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0062] See Figure 1 The processing device of this invention includes a main body with a first port 21, a second port 22 and a third port 23. The main body has a cavity, and the first port 21, the second port 22 and the third port 23 are all connected to the cavity. The first port 21 is located at the upper part of the main body and is connected to a gas extraction pipeline 8. A first control valve 31 is provided at the first port 21 to control the connection or disconnection between the gas extraction pipeline 8 and the cavity. Gas, water, mud, slag and other substances extracted from the gas extraction pipeline 8 enter the cavity through the first port 21.

[0063] The second port 22 is located on the upper part of the main body. A second control valve 32 is provided at the second port 22. The second port 22 is connected to the negative pressure extraction pipeline 7 and the air pipeline through the second control valve 32. The second control valve 32 has a first state and a second state. In the first state, the cavity is connected to the negative pressure extraction pipeline 7. In the second state, the cavity is connected to the air pipeline.

[0064] The third port 23 is located at the lower part of the main body. A third control valve 33 is installed at the third port 23 to control the opening or closing of the third port 23. The third port 23 is used to discharge dirt from the cavity.

[0065] A cleaning component 4 is provided inside the cavity. The cleaning component 4 is used to clean the inner wall surface of the cavity and the side wall of the cavity to prevent mud and sludge in the dirt from adhering to the side wall of the cavity.

[0066] During gas extraction, the first control valve 31 is open, the third control valve 33 is closed, and the second control valve 32 is in the first state, so that after gas and dirt enter the cavity, dirt remains in the cavity, and gas flows out through the negative pressure extraction pipeline 7.

[0067] When draining water, the first control valve 31 is closed, the third control valve is open, and the second control valve 32 is in the second state. At this time, the cavity is connected to the atmosphere to prevent negative pressure from forming in the cavity. The cleaning component 4 is activated, and dirt is discharged from the third port 23.

[0068] This invention enables the separation of gas and sludge in the gas extraction pipeline 8. The cleaning component 4 agitates the gas, allowing for effective sludge removal and improving the cleaning efficiency. It also prevents sludge from adhering to and solidifying on the inner wall of the cavity. Furthermore, by switching the second control valve 32, the cavity can be connected to the atmosphere during sludge removal, preventing poor sludge removal due to negative pressure within the cavity and improving sludge removal efficiency. This ensures that sludge within the cavity is cleaned within a set time, reducing the maintenance frequency of the treatment device and ensuring the normal and orderly operation of the equipment.

[0069] Furthermore, the first port extends 30mm-60mm into the cavity to prevent mud and sludge entering the cavity through the first port from flowing along the cavity wall and to reduce mud and sludge adhering to the cavity wall.

[0070] like Figure 1 As shown, in some embodiments, the main body includes a first housing 11, the inner cavity of the first housing 11 is cylindrical, the cleaning assembly 4 includes a shaft 41, a cleaning component 42 and a drive unit 43, the shaft 41 is pivotally connected to the main body, a part of the shaft 41 is disposed in the cavity, the cleaning component 42 is disposed on the shaft 41, the cleaning component 42 abuts against the inner wall surface of the cavity, and the drive unit 43 is connected to the shaft 41 to drive the shaft 41 and the cleaning component 42 to rotate.

[0071] In other words, by arranging a shaft 41 inside the cavity, the drive unit 43 drives the rotating shaft to rotate, thereby causing the cleaning component 42 on the rotating shaft to rotate, so as to clean the inner wall of the first housing 11. The drive unit 43 can be an explosion-proof motor. The shaft 41 is connected to the first housing 11 through a bearing. A detachable cover is provided on the top of the first housing 11. The shaft 41 is connected to the cover through a bearing. A sealing ring can also be provided between the cover and the first housing 11 to prevent gas from flowing out from between the cover and the first housing 11. The explosion-proof motor can also be set on the cover. In order to prevent the explosion-proof motor from being interfered with by the external environment, a protective cover 44 can be provided on the outside of the explosion-proof motor.

[0072] Furthermore, the cleaning component 42 can be a cleaning brush, which is clustered and arranged in at least one row along the axial direction of the shaft 41 to ensure that the wall of the cavity can be cleaned when the cleaning brush rotates once.

[0073] Alternatively, the cleaning component 42 can be a rubber scraper, which is connected to the shaft 41 via a connecting rod. The rubber scraper fits against the wall of the cavity to clean the cavity.

[0074] like Figure 1 As shown, in some embodiments, the main body also includes a second housing 12, the inner cavity of the second housing 12 is conical, the second housing 12 is located at the lower part of the first housing 11, the third port 23 is located at the lower end of the second housing 12, and a slag collection assembly is provided in the inner cavity of the second housing 12. The slag collection assembly includes a spiral blade 45, the spiral blade 45 is a variable diameter spiral blade 45, the spiral blade 45 is located at the lower end of the shaft 41, the spiral blade 45 is coaxially arranged with the shaft 41, and the outer wall of the spiral blade 45 is in contact with the inner wall of the second housing 12.

[0075] Since the waste includes water, mud, and slag, it is difficult to clean when the mud and slag settle to the bottom of the cavity and solidify. If a cleaning brush is used for cleaning, it will cause the torque of the explosion-proof motor to be too large, the cleaning brush will wear out severely, and the maintenance frequency of the treatment device will be high.

[0076] Specifically, in this embodiment of the invention, a second housing 12 is provided, and a spiral blade 45 is provided inside the second housing 12. The spiral blade 45 can not only transport the dirt downwards, but also clean the inner wall of the second housing 12, preventing the sediment and dirt in the second housing 12 from being suspended upwards again and mixed into the supernatant in the first housing 11.

[0077] Optionally, the spiral blade 45 is a shaftless spiral blade. The shaftless spiral blade can reduce the squeezing force on the heavy sludge, prevent the sludge in the second shell 12 from being too viscous, and at the same time, it can make the sludge move towards the bottom of the cavity and stir the sludge, preventing the sludge in the second shell 12 from solidifying on the side wall.

[0078] like Figure 1 and Figure 2 As shown, in some embodiments, a connecting assembly 6 is provided between the first housing 11 and the second housing 12. The connecting assembly 6 includes a first flange 61, a second flange 62, a sealing component 63, and a connector 64. The first flange 61 is provided on the outer wall of the first housing 11, and the lower end of the first housing 11 has an inner sleeve 65. The second flange 62 is provided on the second housing 12, and the upper end of the second housing 12 has an outer sleeve 66. The outer sleeve 66 and the inner sleeve 65 are fitted together. The sealing component 63 is provided between the inner sleeve 65 and the outer sleeve 66, and the connector 64 is provided between the first flange 61 and the second flange 62.

[0079] It should be noted that, in order to facilitate the detection of the weight of contaminants inside the cavity or the maintenance and repair of the interior of the housing, the first housing 11 and the second housing 12 are configured as separate structures in this embodiment of the invention. The first housing 11 and the second housing 12 are connected by a connecting component 6. Specifically, the first flange 61 and the second flange 62 restrict the vertical movement of the first housing 11 and the second housing 12. The first housing 11 and the second housing 12 are sealed by an inner sleeve 65, an outer sleeve 66 and a sealing component 63. The sealing component 63 can be a sealing ring, and multiple sealing rings can be provided, such as two or three sealing rings. The first housing 11 and the second housing 12 can be disassembled, which greatly improves the efficiency of subsequent maintenance and also facilitates the detection of the weight of contaminants inside the cavity by arranging sensors.

[0080] like Figure 1 As shown, in some embodiments, the processing device further includes a first detection component 35, which is disposed on the main body to detect the weight of the dirt inside the main body. Specifically, the first detection component 35 is a pressure detection sensor, which is arranged between the upper end of the connector 64 and the first flange 61. When the dirt in the cavity increases, the weight of the upper end of the connector 64 acting on the first flange 61 will also increase, thereby obtaining the weight of the dirt in the cavity.

[0081] Alternatively, the first detection component 35 can be configured as a tension sensor, which is installed in the connector 64. The weight of the contaminant inside the cavity can be obtained by detecting the tension on the connector 64.

[0082] Alternatively, the connector 64 may be a connecting screw, bolt, or clip.

[0083] like Figure 1 As shown, in some embodiments, the processing device further includes a fourth port 24, at which a fourth control valve 34 is provided. The fourth port 24 is located on the side wall of the lower part of the first housing 11 and is used to discharge the supernatant in the cavity.

[0084] In order to allow the sediment and supernatant to be discharged separately and to perform component analysis on the contaminants in the gas extraction pipeline 8 in order to determine the internal condition of the gas extraction pipeline 8, a fourth port 24 is provided in this embodiment of the invention. The fourth port 24 is located on the side wall of the lower part of the first shell 11, which can be used to clean the supernatant above the second shell 12. Since the spiral blades 45 will stir the contaminants in the second shell 12 each time they are cleaned, the contaminants will not solidify in the second shell 12.

[0085] Furthermore, the processing device also includes a second detection component 36, which is disposed on the main body to detect the liquid level in the cavity. Specifically, the second detection component 36 is a liquid level detection sensor, which can be a photoelectric sensor, an ultrasonic sensor, a float sensor, etc.

[0086] like Figure 1 As shown, in some embodiments, the first control valve 31, the second control valve 32 and the fourth control valve 34 are all solenoid valves, and the third control valve 33 is a solenoid rotary valve.

[0087] To achieve automatic control, the processing device can be controlled by a controller. The first control valve 31, second control valve 32, third control valve 33, and fourth control valve 34 are all solenoid valves. The first control valve 31 and fourth control valve 34 are two-way solenoid valves, the second control valve 32 is a three-way solenoid valve, and the third control valve 33 is a solenoid rotary valve. The solenoid rotary valve can control the number of rotations, thereby controlling the amount of material fed, which can prevent the processing device from emptying. Because emptying the processing device would cause the sludge in the waste to more easily solidify on the inner wall of the cavity, making it difficult to clean, when the processing device is not empty, the presence of water will cause the waste to be a solid-liquid mixture, preventing the sludge from solidifying.

[0088] like Figure 1 As shown, the gas extraction system of this embodiment includes a negative pressure extraction pipeline 7, multiple gas extraction pipelines 8, and a control system. The negative pressure extraction pipeline 7 is connected to a negative pressure extraction device to create a negative pressure inside the pipeline 7. The gas extraction pipelines 8 are arranged in the stratum. Each gas extraction pipeline 8 and the negative pressure extraction pipeline 7 is provided with a processing device. The processing device is the processing device in any of the above embodiments. The processing device is used to separate the gas in the gas extraction pipeline 8 and allow the gas to flow out of the processing device through the negative pressure extraction pipeline 7. The control system is used to control the operation of the processing device to clean and discharge waste.

[0089] The control system includes a microprocessor, communication module, host computer, display screen, etc. The control valve of the processing device and the drive unit 43 of the cleaning component 4 are powered by mining power supply and designed with overcurrent protection circuit. The microprocessor of the control system adopts ARM chip, and the communication adopts RS485 and infrared communication. It is equipped with a corresponding remote control for convenient on-site operation. When controlling the cleaning component 4, the power switch is controlled through the drive circuit, thereby driving the motor of the cleaning brush to work and perform automatic cleaning.

[0090] During the cleaning process of the treatment device, the liquid level inside the waterproof device is monitored in real time, and the action thresholds for water discharge and storage are set to meet the water discharge requirements of different areas.

[0091] The control system of the present invention combines local control and remote control: a display screen is provided on the top of the processing device body, such as an 8-inch LCD touch screen. Water quality monitoring sensors can also be arranged in the processing device, so that data information such as water level, water quality, cleaning time and frequency can be monitored on the display screen. A cleaning action button is configured, and an audible and visual alarm is provided next to the screen. When the third port 23 or the fourth port 24 is blocked by sludge and the cleaning component 4 is working normally, the alarm will flash a red light and sound an alarm.

[0092] The processing device uploads real-time data and historical reports to the host computer of the control system via fiber optic communication, facilitating real-time monitoring on the well site.

[0093] Multiple processing devices communicate with each other, and the host computer performs fault analysis: Multiple processing devices communicate with each other via the Modbus 485 protocol. The host computer summarizes and analyzes the cleaning frequency of the processing devices to determine which section of the extraction pipeline is suspected of having a leak, and the extraction effect between each section of the pipeline.

[0094] like Figure 3 As shown, the gas extraction monitoring method of this invention monitors the gas extraction pipeline 8 based on the gas extraction system of the above embodiment. The gas extraction monitoring method includes:

[0095] S101 acquires the weight of the contaminants in the treatment device and the liquid level in the cavity. Specifically, the weight of the contaminants in the cavity can be detected by the first detection component 35 in the above embodiment, and the liquid level in the cavity can be detected by the second detection component 36, so as to acquire the corresponding data information respectively.

[0096] S102 determines whether to open the third port 23 to discharge the precipitate, or whether to open the fourth port 24 to discharge the supernatant.

[0097] In other words, by analyzing the weight and liquid level data of the contaminants within the cavity, it is determined whether the amount of sediment in the cavity has reached a certain level and whether centralized cleaning is necessary. If the liquid level in the cavity reaches a set threshold but the amount of sediment in the cavity does not, only the fourth port 24 is opened to discharge the supernatant. If both the liquid level and the amount of sediment in the cavity reach the set threshold, then both the supernatant and the sediment are discharged.

[0098] The supernatant mainly consists of water and impurities suspended in the water, while the precipitate mainly consists of mud and slag settled at the bottom of the cavity.

[0099] S103 periodically detects the number of times the third port 23 and the fourth port 24 are turned on, and obtains the turn-on frequency of the third port 23 and the fourth port 24.

[0100] By periodically detecting the number of times the third port 23 and the fourth port 24 are opened, the opening frequency can be determined, and thus the discharge volume of supernatant and sediment in the corresponding time period can be determined. Based on the detected discharge volume of supernatant and sediment, the current gas extraction pipeline 8 can be monitored and its normal operation can be judged.

[0101] S104 determines whether the opening frequency of the third port 23 is greater than the first threshold. If so, an early warning signal is issued. That is, when the opening frequency of the third port 23 is greater than the first threshold, it indicates that there is too much mud in the gas extraction pipeline 8, and it is necessary to check whether the gas extraction pipeline 8 has collapsed.

[0102] S105 determines whether the opening frequency of the fourth port 24 is greater than the second threshold. If so, an early warning signal is issued. That is to say, when the opening frequency of the fourth port 24 is greater than the second threshold, it indicates that too much water is coming out of the gas extraction pipeline 8. It is necessary to detect whether water inrush will occur. It can be used in conjunction with the detection structures in multiple gas extraction pipelines 8 in the corresponding area to make a comprehensive judgment on the regional structure of the strata.

[0103] S106 determines whether the opening frequency of the third port 23 is less than the third threshold. If so, a warning signal is issued. That is, when the opening frequency of the third port 23 is lower than the third threshold, it indicates that there is no sludge discharge or very little sludge discharge in the current gas extraction pipeline 8, and it is necessary to check whether there are problems such as blockage in the gas extraction pipeline 8.

[0104] S107 determines whether the opening frequency of the fourth port 24 is less than the fourth threshold. If so, a warning signal is issued. That is, when the opening frequency of the fourth port 24 is lower than the fourth threshold, it indicates that there is less drainage in the current gas extraction pipeline 8, and it is necessary to check whether there are problems such as blockage in the gas extraction pipeline 8.

[0105] The first, second, third, and fourth thresholds mentioned above need to be adjusted and determined according to different geological conditions. For example, parameters are set based on data collected in the early stages of gas drainage. In the later maintenance process, based on data collected from each gas drainage pipeline 8, the first, second, third, and fourth thresholds need to be optimized to a certain extent to ensure that the data collected by the processing device is more consistent with the actual operation of the gas drainage pipeline. When a sudden change occurs, an early warning signal is obtained in a timely manner to facilitate the detection of the gas drainage pipeline 8, ensure the effective operation of the entire gas drainage system, improve the monitoring capability of the gas drainage system, improve the fault prediction capability and processing efficiency, and enable the prediction and early warning of geological disasters.

[0106] Based on the monitoring of each gas extraction pipeline 8, the data information is further integrated to obtain the geological conditions of the entire area.

[0107] In this embodiment of the invention, the precipitate and supernatant are discharged separately, which facilitates the collection of the precipitate and makes it easier to observe the composition of the precipitate, thereby enabling more accurate judgment and adjustment of the collected data.

[0108] As shown in 4, in some embodiments, determining whether to open the third port 23 to discharge the precipitate, or determining whether to open the fourth port 24 to discharge the supernatant, includes:

[0109] When the liquid level in the S201 monitoring and treatment device reaches the set fifth threshold, a waste discharge signal is issued.

[0110] In other words, the waste removal signal is triggered when the liquid level in the cavity reaches the fifth threshold, which avoids excessive waste in the cavity and facilitates timely removal of waste from the treatment device.

[0111] S202 determines whether the weight of the waste in the treatment device has reached the sixth threshold.

[0112] When the treatment device needs to be cleaned of contaminants, a cleaning plan needs to be determined. This involves deciding whether to clean via the fourth port 24 or through a combination of the fourth port 24 and the third port 23. This embodiment of the invention detects the weight of the contaminants in the treatment device. When the contaminant level in the cavity reaches a fifth threshold, the weight of the contaminants is used to estimate the amount of sediment, thereby rationally determining the cleaning plan. This facilitates obtaining reliable detection data, enabling data analysis and the issuance of early warning information.

[0113] If S203 is not, then the fourth port 24 is opened to drain the supernatant. If the weight of the contaminant does not reach the sixth threshold, it means that the amount of sediment in the cavity is small and there is no need to drain it through the third port 23.

[0114] If S204 is true, then port 24 is opened to drain the supernatant, and then port 23 is opened to drain the sediment. When the weight of the contaminant reaches the sixth threshold, it indicates that a certain amount of sediment has accumulated in the cavity and needs to be drained.

[0115] In some embodiments, the sixth threshold is (1.6~3)ρV1+ρV2, where ρ is the density of the supernatant, V1 is the volume of contaminants filling the inner cavity of the second housing 12, and V2 is the volume of contaminants above the second housing 12 when the liquid level in the treatment device reaches the set fifth threshold.

[0116] Since the density of sludge contained in the sediment is not constant, the treatment device of this embodiment of the invention can centrally discharge and collect the sediment. Based on the sediment detection data collected in the early stage, the sixth threshold parameter value of the sediment is obtained to more accurately control the critical point of sediment cleaning and ensure the cleaning effect of the treatment device and the accuracy of monitoring of the entire gas extraction system.

[0117] For example, based on the precipitate collected from the treatment device, the composition of the precipitate can be analyzed. When the proportion of viscous mud in the precipitate is relatively high, the sixth threshold can be set to (1.6ρV1+ρV2), (1.8ρV1+ρV2), or (2.1ρV1+ρV2). When the proportion of slag in the precipitate is relatively high, the sixth threshold can be adjusted to (2.4ρV1+ρV2), (2.8ρV1+ρV2), or (3ρV1+ρV2). When taking the value of ρ, ρ can be the density of water directly.

[0118] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0119] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0120] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0121] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0122] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0123] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A method for monitoring gas extraction, characterized in that, Monitoring of gas extraction pipelines based on a gas extraction system, the gas extraction system comprising: A negative pressure extraction pipeline, which is connected to a negative pressure extraction device to create a negative pressure inside the negative pressure extraction pipeline; Multiple gas extraction pipelines are arranged in the formation. Each gas extraction pipeline and the negative pressure extraction pipeline are equipped with a treatment device. The treatment device is used to separate the gas in the gas extraction pipeline and allow the gas to flow out of the treatment device through the negative pressure extraction pipeline. A control system is used to control the operation of the processing device to enable the processing device to clean and discharge waste. The processing device includes: The main body has a cavity, and the main body includes a first shell, the inner cavity of the first shell being cylindrical; A first port is located on the upper part of the main body and is connected to a gas extraction pipeline. A first control valve is provided at the first port to control the connection or disconnection between the gas extraction pipeline and the cavity. The second port is located on the upper part of the main body. A second control valve is provided at the second port. The second port is connected to the negative pressure extraction pipeline and the air pipeline through the second control valve. The second control valve has a first state and a second state. In the first state, the cavity is connected to the negative pressure extraction pipeline. In the second state, the cavity is connected to the air pipeline. A cleaning assembly is disposed within the cavity and is used to clean the inner wall surface of the cavity; The third port is located at the lower part of the main body, and a third control valve is provided at the third port to control the opening or closing of the third port. The third port is used to discharge dirt from the cavity. A fourth control valve is provided at the fourth port, which is located on the side wall of the lower part of the first housing, and is used to discharge the supernatant in the cavity; The gas extraction and monitoring method includes: The weight of the waste and the liquid level in the cavity of the treatment device are obtained; Determine whether to open the third port to discharge the precipitate, or determine whether to open the fourth port to discharge the supernatant; The number of times the third port and the fourth port are turned on is periodically detected, and the turning frequency of the third port and the fourth port is obtained. Determine whether the opening frequency of the third port is greater than the first threshold; if so, issue a warning signal. Determine whether the opening frequency of the fourth port is greater than the second threshold; if so, issue a warning signal. Determine whether the opening frequency of the third port is less than the third threshold; if so, issue a warning signal. Determine whether the opening frequency of the fourth port is less than the fourth threshold. If so, issue a warning signal.

2. The gas extraction and monitoring method according to claim 1, characterized in that, The cleaning component includes: A shaft, which is pivotally connected to the main body, and a portion of the shaft is disposed within the cavity; A cleaning component is provided on the shaft and abuts against the inner wall surface of the cavity; A drive unit is connected to the shaft to drive the shaft and the cleaning component to rotate.

3. The gas extraction and monitoring method according to claim 2, characterized in that, The main body further includes a second housing, the inner cavity of which is conical. The second housing is located at the lower part of the first housing, and the third port is located at the lower end of the second housing. A slag collection assembly is provided in the inner cavity of the second housing, the slag collection assembly comprising: The spiral blade is a variable diameter spiral blade, which is located at the lower end of the shaft and is coaxial with the shaft. The outer wall of the spiral blade is in contact with the inner wall of the second housing.

4. The gas extraction and monitoring method according to claim 3, characterized in that, A connecting assembly is provided between the first housing and the second housing, the connecting assembly comprising: The first flange is disposed on the outer wall of the first housing, and the lower end of the first housing has an inner sleeve; The second flange is provided on the second housing. The upper end of the second housing has an outer sleeve, and the outer sleeve and the inner sleeve are fitted together. A sealing component is disposed between the inner sleeve and the outer sleeve; A connector is disposed between the first flange and the second flange.

5. The gas extraction and monitoring method according to claim 4, characterized in that, The processing device further includes a first detection component disposed on the main body to detect the weight of contaminants within the main body; and / or It also includes a second detection component disposed on the main body to detect the liquid level within the cavity; and / or The first, second, and fourth control valves are all solenoid valves, and the third control valve is a solenoid rotary valve; and / or The helical blade is a shaftless helical blade.

6. The gas extraction monitoring method according to any one of claims 3-5, characterized in that, The determination of whether to open the third port to discharge the precipitate, or whether to open the fourth port to discharge the supernatant, includes: When the liquid level in the treatment device reaches the set fifth threshold, a waste discharge signal is issued. Determine whether the weight of the waste in the treatment device has reached the sixth threshold; If not, the fourth port is opened to drain the supernatant; If so, the fourth port is opened to drain the supernatant, and then the third port is opened to drain the precipitate.

7. The gas extraction and monitoring method according to claim 6, characterized in that, The sixth threshold is ,in, The density of the supernatant is... The volume of dirt filling the inner cavity of the second housing. The volume of contaminants located above the second housing when the liquid level in the treatment device reaches a set fifth threshold.

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