Downhole gas processing method, device, equipment and system

Abstract

The present disclosure relates to a method, device, equipment and system for underground gas detection and processing. An underground gas processing method includes: obtaining an underground carbon dioxide concentration value; in response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold, controlling the valve group on the underground pipeline to operate so as to discharge the power plant flue gas in the underground pipeline to the surface and cut off the power plant flue gas injection; wherein the number of valve groups is one or more groups; each group of valves includes a flue gas injection valve arranged on the underground pipeline; and a first exhaust valve and a second exhaust valve respectively arranged on both sides of the flue gas injection valve. The above-mentioned technical solution of the present application, if it is found that flue gas leakage causes excessive carbon dioxide, the valve group is used to control the injection and discharge of flue gas into the pipeline to avoid excessive carbon dioxide causing harm to the workers underground.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic technology, and in particular, to a method, device, equipment and system for underground gas detection and processing. Background Art

[0002] In the goaf of coal mining, the coal in the goaf often spontaneously combusts, which is a major hidden danger to coal mine safety production. In the existing technology, the flue gas of the power plant is injected into the goaf to prevent the spontaneous combustion of coal. However, the flue gas of the power plant may leak during the pipeline transportation. If a large amount of carbon dioxide leaks, it will bring great danger to the coal mine. Summary of the invention

[0003] The purpose of the present invention is to provide a method, device, equipment and system for detecting and processing underground gas, so as to solve the technical problem that the underground carbon dioxide exceeds the standard due to underground pipeline leakage, which brings harm to the workers.

[0004] In order to achieve the above object, the present disclosure provides a downhole gas processing method, comprising:

[0005] Obtain the downhole carbon dioxide concentration value;

[0006] In response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold, controlling the valve group on the downhole pipeline to operate so as to discharge the power plant flue gas in the downhole pipeline to the surface and cut off the injection of the power plant flue gas;

[0007] Wherein, the number of valve groups is one or more groups;

[0008] Each valve group includes a smoke injection valve disposed on the downhole pipeline; and a first exhaust valve and a second exhaust valve respectively disposed on both sides of the smoke injection valve.

[0009] Optionally, the number of the valve groups is one group; the smoke injection valve in the group of valves is arranged on the pipeline near the wellhead; the input end of the first exhaust valve in the group of valves is connected to the output end of the smoke injection valve, and the output end of the second exhaust valve is connected to the input end of the smoke injection valve;

[0010] The first exhaust valve is used to discharge the power plant flue gas in the downhole pipeline to the wellhead during exhaust;

[0011] The second exhaust valve is used to discharge the power plant flue gas in the well pipeline to the wellhead during exhaust.

[0012] Optionally, the number of the valve groups is multiple, the downhole pipeline is divided into multiple sections, and a group of valves is respectively arranged on each section of the downhole pipeline;

[0013] The obtaining of the downhole carbon dioxide concentration value comprises:

[0014] Obtain the carbon dioxide concentration value around each section of downhole pipeline;

[0015] In response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold, controlling the valve group on the downhole pipeline to act, including:

[0016] For each section of downhole pipeline before the last section of downhole pipeline near the wellhead, in response to determining that the carbon dioxide concentration value around the section of downhole pipeline is greater than or equal to a predetermined carbon dioxide concentration threshold, the exhaust valve in the valve group on the section of downhole pipeline and the next section of downhole pipeline of the section of downhole pipeline is controlled to actuate, and the smoke injection valve in the valve group on the section of downhole pipeline is controlled to be closed;

[0017] For the last section of the downhole pipeline close to the wellhead, in response to determining that the carbon dioxide concentration value around the section of the downhole pipeline is greater than or equal to a predetermined carbon dioxide concentration threshold, the exhaust valve in the valve group on the section of the downhole pipeline is controlled to operate, and the smoke injection valve in the valve group on the section of the downhole pipeline is controlled to be closed.

[0018] Optionally, a third exhaust valve is further provided at a position close to the bottom of the well on the last section of the downhole pipeline close to the wellhead;

[0019] In response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold, controlling the valve group on the downhole pipeline to operate, further comprising:

[0020] For the last section of the downhole pipeline near the wellhead, in response to determining that the carbon dioxide concentration value around the section of the downhole pipeline is greater than or equal to a predetermined carbon dioxide concentration threshold, the third exhaust valve at a position close to the bottom of the well on the section of the downhole pipeline is controlled to operate.

[0021] Optionally, the first exhaust valve and the second exhaust valve in each valve group are also connected to exhaust pipes respectively; wherein the exhaust pipe is embedded in the wall underground, and the output end is located on the ground, for transporting the gas exhausted by the first exhaust valve and the second exhaust valve to the ground.

[0022] Optionally, the method further includes:

[0023] In response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold, the alarm device is controlled to sound an alarm.

[0024] Optionally, after the alarm device is controlled to sound an alarm, the method further includes:

[0025] When the alarm duration reaches a predetermined duration threshold, if the carbon dioxide concentration value is still greater than or equal to the predetermined carbon dioxide concentration threshold, the pretreatment and transportation of the flue gas from the power plant are stopped.

[0026] In a second aspect, a downhole gas processing device comprises:

[0027] An acquisition module is used to obtain the downhole carbon dioxide concentration value;

[0028] A control module, in response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold, controls the valve group on the downhole pipeline to operate so as to discharge the power plant flue gas in the downhole pipeline to the surface and cut off the injection of the power plant flue gas;

[0029] Wherein, the number of valve groups is one or more groups;

[0030] Each valve group includes a smoke injection valve disposed on the downhole pipeline; and a first exhaust valve and a second exhaust valve respectively disposed on both sides of the smoke injection valve.

[0031] In one embodiment, the number of the valve groups is multiple, the downhole pipeline is divided into multiple sections, and a group of valves is respectively arranged on each section of the downhole pipeline;

[0032] The acquisition module is also used to obtain the carbon dioxide concentration value around each section of the downhole pipeline;

[0033] The control module is also used for, for each section of the downhole pipeline before the last section of the downhole pipeline close to the wellhead, in response to determining that the carbon dioxide concentration value around the section of the downhole pipeline is greater than or equal to a predetermined carbon dioxide concentration threshold, controlling the exhaust valve in the valve group on the section of the downhole pipeline and the next section of the downhole pipeline to operate, and controlling the smoke injection valve in the valve group on the section of the downhole pipeline to shut off;

[0034] For the last section of the downhole pipeline close to the wellhead, in response to determining that the carbon dioxide concentration value around the section of the downhole pipeline is greater than or equal to a predetermined carbon dioxide concentration threshold, the exhaust valve in the valve group on the section of the downhole pipeline is controlled to operate, and the smoke injection valve in the valve group on the section of the downhole pipeline is controlled to be closed.

[0035] In one embodiment, a third exhaust valve is further provided at a position close to the bottom of the well on the last section of the downhole pipeline close to the wellhead;

[0036] The control module is also used to control the third exhaust valve to operate in response to determining that the carbon dioxide concentration value around the last section of the downhole pipeline close to the wellhead is greater than or equal to a predetermined carbon dioxide concentration threshold.

[0037] In one embodiment, an alarm device is further included, wherein the alarm device is used to control the alarm device to sound an alarm in response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold.

[0038] In one embodiment, the control module is further configured to, when the alarm duration reaches a predetermined duration threshold, stop pre-processing and transporting the flue gas from the power plant if the carbon dioxide concentration value is still greater than or equal to the predetermined carbon dioxide concentration threshold.

[0039] In a third aspect, the present application further proposes a non-temporary computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the steps of any of the above methods are implemented.

[0040] In a fourth aspect, the present application further proposes an electronic device, comprising: a memory on which a computer program is stored;

[0041] A processor is used to execute the computer program in the memory to implement the steps of any one of the above methods.

[0042] Through the above technical solution, if smoke leakage is found, causing the carbon dioxide in the underground air to exceed the standard, the valve group is used to control the injection and discharge of smoke into the pipeline to avoid the excessive carbon dioxide causing harm to the workers underground.

[0043] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0045] Figure 1 is a flow chart of a downhole gas detection processing method disclosed in an embodiment of the present application;

[0046] Figure 2A It is a schematic diagram of a smoke underground disaster prevention and sealing transmission pipeline leakage monitoring system disclosed in accordance with an embodiment of the present application;

[0047] Figure 2B It is a schematic diagram of another anti-leakage monitoring system for underground smoke disaster prevention and sealing transmission pipeline disclosed in accordance with the embodiment of the present application;

[0048] Figure 3A It is a schematic diagram of another arrangement of a valve group of a downhole pipeline disclosed in an embodiment of the present application;

[0049] Figure 3BIt is a schematic diagram of another arrangement of a valve group of a downhole pipeline disclosed in an embodiment of the present application;

[0050] Figure 3C It is a schematic diagram of another arrangement of a valve group of a downhole pipeline disclosed in an embodiment of the present application;

[0051] Figure 4 It is a structural schematic diagram of a downhole gas detection and processing device disclosed in an embodiment of the present application;

[0052] Figure 5 is a schematic diagram of the structure of an electronic device disclosed according to an embodiment of the present application;

[0053] Figure 6 is a schematic structural diagram of another electronic device disclosed according to an embodiment of the present application;

[0054] Figure 7 It is a structural schematic diagram of a downhole gas detection and processing system disclosed in accordance with an embodiment of the present application. DETAILED DESCRIPTION

[0055] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0056] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.

[0057] A method for underground gas detection and processing, see attached Figure 1 A flow chart of a method for underground gas detection and processing is shown; the method comprises the following steps:

[0058] Step S102, obtaining the downhole carbon dioxide concentration value;

[0059] Specifically, multiple open-path laser carbon dioxide detection devices are set up along the periphery of the underground pipeline in the mining area. The laser beam emitted by the detection device is directed to a special reflector at a certain distance and returns to the receiver of the device. The device uses the spectrum absorption principle of the laser signal beam on carbon dioxide gas to achieve real-time measurement of the carbon dioxide concentration in the environment along the underground transmission pipeline; the detected carbon dioxide concentration is transmitted to the central control unit. Generally, the depth of the underground mine is more than 100 meters.

[0060] Step S104, in response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold, controlling the valve group on the downhole pipeline to operate so as to discharge the power plant flue gas in the downhole pipeline to the surface and cut off the power plant flue gas injection.

[0061] See attached Figure 2A and 2B The schematic diagram of the anti-leakage monitoring system for the underground smoke well disaster prevention and sealing transmission pipeline is shown;

[0062] The system includes: a monitoring platform 1, a monitoring substation 2, a PLC controller 3, a workshop environment monitoring unit 4, an underground pipeline monitoring unit 5, an underground line environment monitoring unit 6, an emptying and pressure relief device 7, and a flue gas pretreatment and transportation device 8.

[0063] Among them, the monitoring platform 1 communicates with the monitoring substation 2 and the PLC controller 3 through the driver to realize the real-time monitoring of each monitoring unit by the monitoring platform 1. According to the deployment process, the system process is displayed in the form of a graphical interface in the monitoring platform 1, realizing the system's dynamic display, data monitoring, data archiving, report printing and other functions. The analysis and control mechanism of the monitoring platform 1 combines the preset algorithm to analyze and process the key parameters.

[0064] The monitoring substation 2 is connected to the workshop environment monitoring unit 4, the downhole pipeline monitoring unit 5, and the downhole line environment monitoring unit 6 through the RS485 bus, and uploads the collected data of each unit to the monitoring platform 1, so that the monitoring platform 1 can realize the real-time collection and monitoring of the workshop environment parameters, downhole pipeline parameters and downhole line environment parameters.

[0065] The PLC controller 3 uses 485 bus communication to collect status information of the vent valve and smoke injection valve in the exhaust pressure relief device 7, and controls the valve action according to the monitoring instructions.

[0066] Exemplarily, the carbon dioxide concentration threshold is 0.5%.

[0067] Wherein, the number of valve groups is one or more groups;

[0068] Each valve group includes a smoke injection valve disposed on the downhole pipeline; and a first exhaust valve and a second exhaust valve respectively disposed on both sides of the smoke injection valve.

[0069] Specifically, the central control unit is connected to each valve group and controls each valve group to operate.

[0070] The above technical solution of the present application can assist the injection of power plant flue gas by setting a valve group, and the injection valve in the valve group can assist the injection of power plant flue gas, and the exhaust valve can be set to help discharge the power plant flue gas in the pipeline. When it is detected that the concentration of carbon dioxide exceeds the standard, the flue gas in the pipeline can be discharged in time, thereby reducing the carbon dioxide concentration in the pipeline to below the standard, thereby improving safety.

[0071] In one embodiment, the number of the valve group is one group; the smoke injection valve in the valve group is arranged on the pipeline near the wellhead; see the attached Figure 3A A schematic diagram of a valve group setting is shown.

[0072] The input end of the first exhaust valve in the valve group is connected to the output end of the flue gas injection valve, and the output end passes through the first exhaust pipeline. The first exhaust valve is used to discharge the power plant flue gas in the underground pipeline to the wellhead during exhaust;

[0073] The input end of the second exhaust valve is connected to the input end of the flue gas injection valve, and the output end discharges the power plant flue gas in the well pipeline to the wellhead through the second exhaust pipeline.

[0074] The second exhaust valve is used to discharge the power plant flue gas in the well pipeline to the wellhead during exhaust.

[0075] The outlets of the first exhaust pipe and the second exhaust pipe are arranged on the ground at the wellhead, a certain distance above the ground.

[0076] Exemplarily, the exhaust duct outlet is 0.5 m to 1 m above the ground.

[0077] Of course, it is also possible not to set up an exhaust pipeline, because the two exhaust valves are located close to the wellhead, and the output end can also be directly output to the ground.

[0078] When smoke leakage is confirmed, the two exhaust valves mentioned above are controlled to open quickly to evacuate and depressurize the surface and underground pipelines respectively, and the smoke injection valve is closed to prevent smoke from continuing to be injected into the underground. The valve group can quickly eliminate the kinetic energy of the pipeline leakage, control the scope and impact of the leakage, and ensure the safety of underground personnel.

[0079] In one embodiment, the number of the valve groups is multiple, the downhole pipeline is divided into multiple sections, and a group of valves is respectively arranged on each section of the downhole pipeline; see attached Figure 3B Another schematic diagram of the arrangement of a valve group for a downhole pipeline is shown;

[0080] Divide the underground pipeline into multiple sections of sub-pipelines, and set a valve group at the connection between any two adjacent sub-pipelines;

[0081] Each valve group includes a smoke injection valve disposed on the downhole pipeline; and a first exhaust valve and a second exhaust valve respectively disposed on both sides of the smoke injection valve.

[0082] The first exhaust valve is arranged in the adjacent first sub-pipeline, and is used to exhaust the power plant flue gas in the first sub-pipeline;

[0083] The second exhaust valve is arranged in the adjacent second sub-pipeline, and is used to exhaust the power plant flue gas in the second sub-pipeline.

[0084] Exemplarily, the downhole pipeline is 120 meters long and is divided into 6 sections, with each section of the pipeline being 20 meters long.

[0085] There are 6 valve groups. From the wellhead to the downhole, the first valve group is arranged at the head end of the first section of the pipeline; the second valve group is arranged at the connection between the second section of the pipeline and the first section of the pipeline; the third valve group is arranged at the connection between the third section of the pipeline and the second section of the pipeline; the fourth valve group is arranged at the connection between the fourth section of the pipeline and the third section of the pipeline; the fifth valve group is arranged at the connection between the fifth section of the pipeline and the fourth section of the pipeline; and the sixth valve group is arranged at the connection between the sixth section of the pipeline and the fifth section of the pipeline.

[0086] Specifically, the flue gas injection valve in the second valve group is arranged at the connection between the second section sub-pipeline and the first section sub-pipeline, and is used to inject the power plant flue gas in the first section sub-pipeline into the second section sub-pipeline;

[0087] The first exhaust valve in the second valve group is arranged in the second section of the pipeline, and is used to discharge the power plant flue gas in the second section of the pipeline;

[0088] The second exhaust valve in the second valve group is arranged in the first section of the pipeline, and is used to exhaust the power plant flue gas in the first section of the pipeline.

[0089] The flue gas injection valve in the third valve group is arranged at the connection between the third section sub-pipeline and the second section sub-pipeline, and is used to inject the power plant flue gas in the second section sub-pipeline into the third section sub-pipeline;

[0090] The first exhaust valve in the third valve group is arranged in the third sub-pipeline, and is used to discharge the power plant flue gas in the third sub-pipeline;

[0091] The second exhaust valve in the third valve group is arranged in the second section of the sub-pipeline, and is used to discharge the power plant flue gas in the second section of the sub-pipeline;

[0092] The flue gas injection valve in the fourth valve group is arranged at the connection between the fourth section sub-pipeline and the third section sub-pipeline, and is used to inject the power plant flue gas in the third section sub-pipeline into the fourth section sub-pipeline;

[0093] The first exhaust valve in the fourth valve group is arranged in the fourth sub-pipeline, and is used to exhaust the power plant flue gas in the fourth sub-pipeline;

[0094] The second exhaust valve in the fourth valve group is arranged in the third section pipeline, and is used to exhaust the power plant flue gas in the third section pipeline.

[0095] The flue gas injection valve in the fifth valve group is arranged at the connection between the fifth section sub-pipeline and the fourth section sub-pipeline, and is used to inject the power plant flue gas in the fourth section sub-pipeline into the fifth section sub-pipeline;

[0096] The first exhaust valve in the fifth valve group is arranged in the fifth sub-pipeline, and is used to exhaust the power plant flue gas in the fifth sub-pipeline;

[0097] The second exhaust valve in the fifth valve group is arranged in the fourth section of the pipeline, and is used to exhaust the power plant flue gas in the fourth section of the pipeline.

[0098] The flue gas injection valve in the sixth valve group is arranged at the connection between the sixth section sub-pipeline and the fifth section sub-pipeline, and is used to inject the power plant flue gas in the fifth section sub-pipeline into the sixth section sub-pipeline;

[0099] The first exhaust valve in the sixth valve group is arranged in the sixth section of the sub-pipeline, and is used to exhaust the power plant flue gas in the sixth section of the sub-pipeline;

[0100] The second exhaust valve in the sixth valve group is arranged in the fifth section of the sub-pipeline, and is used to exhaust the power plant flue gas in the fifth section of the sub-pipeline.

[0101] In the case of multiple sections of pipeline, the method of obtaining the downhole carbon dioxide concentration value includes the following steps:

[0102] Obtain the carbon dioxide concentration value around each section of downhole pipeline;

[0103] In response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold, controlling the valve group on the downhole pipeline to act, including:

[0104] For each section of downhole pipeline before the last section of downhole pipeline near the wellhead, in response to determining that the carbon dioxide concentration value around the section of downhole pipeline is greater than or equal to a predetermined carbon dioxide concentration threshold, the exhaust valve in the valve group on the section of downhole pipeline and the next section of downhole pipeline of the section of downhole pipeline is controlled to actuate, and the smoke injection valve in the valve group on the section of downhole pipeline is controlled to be closed;

[0105] For example, if the carbon dioxide concentration around the fourth section of the pipeline exceeds the standard, the first exhaust valve in the fourth valve group and the second exhaust valve in the fifth valve group are controlled to operate and exhaust.

[0106] For the last section of the downhole pipeline close to the wellhead, in response to determining that the carbon dioxide concentration value around the section of the downhole pipeline is greater than or equal to a predetermined carbon dioxide concentration threshold, the exhaust valve in the valve group on the section of the downhole pipeline is controlled to operate, and the smoke injection valve in the valve group on the section of the downhole pipeline is controlled to be closed.

[0107] Exemplarily, the carbon dioxide concentration around the sixth section of the pipeline exceeds the standard, and the first exhaust valve in the sixth valve group is controlled to exhaust.

[0108] In one embodiment, see the attached Figure 3B A schematic diagram of the setting of another valve group of an underground pipeline is shown; the first exhaust valve and the second exhaust valve in each valve group are also connected to the exhaust pipeline respectively; wherein the exhaust pipeline is embedded in the wall underground, and the output end is located on the ground, which is used to transport the gas exhausted by the first exhaust valve and the second exhaust valve to the ground.

[0109] Specifically, the exhaust pipe is connected to the output end of each exhaust valve, and the output end of the exhaust pipe is located on the ground, a certain distance above the ground, and is used to output the gas discharged from the exhaust valve to the ground. The exhaust pipe is arranged in parallel with the underground pipe and embedded in the wall of the underground well. It has good air tightness, which is conducive to discharging the leaked carbon dioxide in the well to the outside of the well, ensuring that no carbon dioxide leaks into the underground space.

[0110] The above technical solution of the present invention, by subdividing the underground pipeline into multiple sections of sub-pipelines, can be helpful to further determine the specific location of the carbon dioxide leakage, so as to act on the valve group on the leaking sub-pipeline in a targeted manner.

[0111] For the sub-pipeline near the bottom of the well, in order to enhance the exhaust effect of the sub-pipeline section, an exhaust valve can be set at the tail end of the sub-pipeline section. Figure 3C Another schematic diagram of the arrangement of a valve group of a downhole pipeline is shown; a third exhaust valve is arranged at a position close to the bottom of the well on the last section of the downhole pipeline close to the wellhead;

[0112] In response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold, controlling the valve group on the downhole pipeline to operate, further comprising:

[0113] For the last section of the downhole pipeline close to the wellhead, in response to determining that the carbon dioxide concentration value around the section of the downhole pipeline is greater than or equal to a predetermined carbon dioxide concentration threshold, the third exhaust valve is controlled to operate.

[0114] For example, if an exhaust valve is installed near the bottom of the well in the sixth section, the exhaust valve can be controlled to exhaust air at the same time, so as to simultaneously control the exhaust valves at the head and tail ends of the section of the pipeline to exhaust air at the same time, thereby enhancing the exhaust efficiency and improving the exhaust effect.

[0115] In one embodiment, the method further includes: in response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold, controlling an alarm device to sound an alarm.

[0116] Specifically, if it is determined that the carbon dioxide concentration around the Nth section of the sub-pipeline exceeds the standard, in response to determining that the carbon dioxide concentration value around the Nth section of the downhole pipeline is greater than or equal to a predetermined carbon dioxide concentration threshold; the alarm device is controlled to alarm for leakage of the Nth section of the downhole pipeline.

[0117] The alarm can be in the form of voice alarm. The alarm voice can be: The Nth section of underground pipeline is leaking, please deal with it in time.

[0118] Exemplarily, the length of the pipeline is 120 meters. It is divided into 6 sections, and the length of each sub-pipeline is 20 meters. If it is determined that the carbon dioxide concentration around the sub-pipeline of the 5th section exceeds the standard, but the carbon dioxide concentration around the sub-pipeline of the 1st section to the 4th section does not exceed the standard, the alarm voice may be: The underground pipeline of the 5th section is leaking, please deal with it in time. And the power plant flue gas in the 5th section of the sub-pipeline is processed separately, and the valve group set at the head end of the 5th section of the sub-pipeline can be controlled to operate, and the flue gas injection valve therein can be controlled to close, and the power plant flue gas can be cut off from entering the 5th section of the sub-pipeline; the two exhaust valves at the head and tail of the 5th section of the sub-pipeline are controlled to exhaust, and the power plant flue gas in the sub-pipeline is discharged to the ground through the exhaust pipeline.

[0119] In one embodiment, after the alarm device is controlled to sound an alarm,

[0120] When the alarm duration reaches a predetermined duration threshold, if the carbon dioxide concentration value is still greater than or equal to the predetermined carbon dioxide concentration threshold, the pretreatment and transportation of the flue gas from the power plant are stopped.

[0121] Exemplarily, if it is determined that the carbon dioxide concentration around the sub-pipeline of the 5th section exceeds the standard, an alarm is issued. If the alarm duration reaches a predetermined time threshold, the time threshold may be, for example, 5 minutes. After 5 minutes, the carbon dioxide concentration value is still greater than or equal to the predetermined carbon dioxide concentration threshold. In order to avoid catastrophic accidents, it is necessary to stop the pretreatment and transportation of the power plant flue gas in time.

[0122] Combined with Figure 2A and attached Figure 2BDescribe the dynamic control process of the system. The workshop environment monitoring unit 4, underground pipeline monitoring unit 5, and underground line environment monitoring unit 6 of the system collect the workshop environment, underground transmission pipeline working conditions, and underground line environment parameters in real time and upload them to the monitoring substation 2 through the RS485 communication interface. The PLC controller 3 establishes data communication with the electric valve of the emptying and pressure relief device 7 through the RS485 interface, and monitors the valve operation status in the emptying and pressure relief device 7 in real time. The monitoring substation 2 and the PLC controller 3 upload the collected data to the monitoring platform 1 to realize the system's dynamic display, data monitoring, data archiving, report printing and other functions. The analysis and control mechanism of the monitoring platform 1 analyzes and processes the key parameters in combination with the preset algorithm, and issues a command to open the valve of the emptying and pressure relief device 7.

[0123] The system has three modes: local control, remote control and automatic.

[0124] Local control mode: The user only checks the status information on the monitoring platform 1. The controlled device is in the local state. The start and stop of the device and parameter adjustment need to be performed by going to the device and using the operation buttons (panel).

[0125] Remote control mode: The user can check the status on monitoring platform 1 and set the system mode to "remote control" and use the mouse to control the opening and closing of the valve of the emptying and pressure relief device or set the valve opening.

[0126] Automatic mode: Set the system mode to "automatic" through monitoring or downhole controller.

[0127] When the monitoring platform 1 detects that the carbon dioxide concentration in the pretreatment workshop environment exceeds the alarm value, the monitoring platform 1 will issue an alarm and start the workshop alarm and exhaust fan, prompting the on-duty personnel that there is an abnormality in the equipment or transportation pipeline in the pretreatment workshop. When the alarm lasts for a certain period of time (which can be set) or reaches the shutdown value, the system shuts down the induced draft fan, compressor and other electromechanical equipment in the flue gas pretreatment and transportation device to stop conveying flue gas.

[0128] When the monitoring platform 1 analyzes and processes the carbon dioxide value in the environment along the underground line in combination with the preset algorithm and transmits information to the PLC controller 3, when the system verifies that an abnormality has occurred, the monitoring platform 1 issues an alarm, and the PLC controller 3 issues an emptying and pressure relief instruction. First, open the 1# and 2# emptying and pressure relief valves to empty and pressure-release the flue gas in the ground and underground transmission pipelines. After the 1# emptying and pressure relief valve is opened, the flue gas injection valve is closed to prevent the continued injection of flue gas into the underground transmission pipeline. The 1# emptying and pressure relief valve is used to empty the remaining flue gas in the ground transmission pipeline, and the 2# emptying and pressure relief valve is used to pressure-release the flue gas in the underground transmission pipeline to eliminate the kinetic energy of the flue gas leakage in the transmission pipeline. The system shuts down the induced draft fan, compressor and other electromechanical equipment in the flue gas pretreatment and transmission device 8 to stop transmitting flue gas.

[0129] In the second aspect, the present application proposes a downhole gas processing device, see the attached Figure 4 The structure diagram of the downhole gas detection and processing device shown in the figure; the device includes:

[0130] An acquisition module 41 is used to acquire a downhole carbon dioxide concentration value;

[0131] The control module 42 is used for controlling the valve group on the downhole pipeline to operate in response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold value, so as to discharge the power plant flue gas in the downhole pipeline to the surface, and cut off the injection of the power plant flue gas;

[0132] Wherein, the number of valve groups is one or more groups;

[0133] Each valve group includes a smoke injection valve disposed on the downhole pipeline; and a first exhaust valve and a second exhaust valve respectively disposed on both sides of the smoke injection valve.

[0134] In one embodiment, the number of the valve groups is multiple, the downhole pipeline is divided into multiple sections, and a group of valves is respectively arranged on each section of the downhole pipeline;

[0135] The acquisition module 41 is also used to obtain the carbon dioxide concentration value around each section of the downhole pipeline;

[0136] The control module 42 is also used for, for each section of the downhole pipeline before the last section of the downhole pipeline close to the wellhead, in response to determining that the carbon dioxide concentration value around the section of the downhole pipeline is greater than or equal to a predetermined carbon dioxide concentration threshold, controlling the exhaust valve in the valve group on the section of the downhole pipeline and the next section of the downhole pipeline to operate, and controlling the smoke injection valve in the valve group on the section of the downhole pipeline to shut off;

[0137] For the last section of the downhole pipeline close to the wellhead, in response to determining that the carbon dioxide concentration value around the section of the downhole pipeline is greater than or equal to a predetermined carbon dioxide concentration threshold, the exhaust valve in the valve group on the section of the downhole pipeline is controlled to operate, and the flue gas injection valve in the valve group is controlled to be closed.

[0138] In one embodiment, the last section of the downhole pipeline close to the wellhead is provided with an exhaust valve at a position close to the bottom of the well;

[0139] The control module 42 is also used to control the third exhaust valve to operate in response to determining that the carbon dioxide concentration value around the last section of the downhole pipeline close to the wellhead is greater than or equal to a predetermined carbon dioxide concentration threshold.

[0140] In one embodiment, an alarm device 43 is further included, and the alarm device is used to control the alarm device to sound an alarm in response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold.

[0141] In one embodiment, the control module 42 is further configured to stop pre-processing and transporting the flue gas from the power plant when the alarm duration reaches a predetermined duration threshold and if the carbon dioxide concentration value is still greater than or equal to the predetermined carbon dioxide concentration threshold.

[0142] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0143] Figure 5 FIG. 5 is a block diagram of an electronic device 500 according to an exemplary embodiment. Figure 5 As shown, the electronic device 500 may include: a processor 501 and a memory 502. The electronic device 500 may also include one or more of a multimedia component 503, an input / output (I / O) interface 504, and a communication component 505.

[0144] The processor 501 is used to control the overall operation of the electronic device 500 to complete all or part of the steps in the above-mentioned underground gas detection processing method. The memory 502 is used to store various types of data to support the operation of the electronic device 500, and these data may include, for example, instructions for any application or method used to operate on the electronic device 500, and application-related data, such as contact data, sent and received messages, pictures, audio, video, etc. The memory 502 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, magnetic disk or optical disk. The multimedia component 503 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 502 or sent through the communication component 505. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 504 provides an interface between the processor 501 and other interface modules, and the above-mentioned other interface modules may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 505 is used for wired or wireless communication between the electronic device 500 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 505 may include: Wi-Fi module, Bluetooth module, NFC module, etc.

[0145] In an exemplary embodiment, the electronic device 500 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned downhole gas detection processing method.

[0146] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the above-mentioned downhole gas detection processing method are implemented. For example, the computer-readable storage medium can be the above-mentioned memory 502 including program instructions, and the above-mentioned program instructions can be executed by the processor 501 of the electronic device 500 to complete the above-mentioned downhole gas detection processing method.

[0147] Figure 6 6 is a block diagram of an electronic device 600 according to an exemplary embodiment. For example, the electronic device 600 may be provided as a server. Figure 6 The electronic device 600 includes a processor 622, which may be one or more, and a memory 632 for storing a computer program executable by the processor 622. The computer program stored in the memory 632 may include one or more modules, each corresponding to a set of instructions. In addition, the processor 622 may be configured to execute the computer program to perform the above-mentioned downhole gas detection processing method.

[0148] In addition, the electronic device 600 may further include a power supply component 626 and a communication component 650. The power supply component 626 may be configured to perform power management of the electronic device 600, and the communication component 650 may be configured to implement communication of the electronic device 600, for example, wired or wireless communication. In addition, the electronic device 600 may further include an input / output (I / O) interface 658. The electronic device 600 may operate based on an operating system stored in the memory 632, such as Windows Server 2000. TM , Mac OSX TM , Unix TM , Linux TM etc.

[0149] This application proposes a downhole gas detection and processing system, see attached Figure 7 The structural diagram of the downhole gas detection and processing system shown in the figure; the system includes the above-mentioned electronic device 71; a downhole environment monitoring unit 72 and an emptying and pressure relief unit 73 respectively connected to the electronic device.

[0150] The downhole environment monitoring unit 72 is used to detect the gas around the downhole pipeline and send the detection result to the electronic device;

[0151] The exhaust and pressure relief unit 73 is used to control the exhaust and injection of power plant flue gas in the underground pipeline under the control of the electronic equipment.

[0152] Specifically, the evacuation and pressure relief unit 73 includes one or more valve groups arranged on the underground pipeline, including a first valve group 731, a second valve group 732, and an Nth valve group. The valve groups adopt the connection form of the aforementioned valve groups.

[0153] In one implementation, it further includes: an alarm unit 74; the alarm unit 74 is used to generate an alarm under the control of the electronic device.

[0154] In one embodiment, it further includes: a downhole pipeline monitoring unit 75; the downhole pipeline monitoring unit 75 is used to detect the gas in the downhole pipeline and send the detection result to the electronic device.

[0155] The downhole pipeline monitoring unit 75 includes: an oxygen sensor 751 and a pressure sensor 752;

[0156] The oxygen sensor 751 is used to detect the oxygen concentration in the gas in the downhole pipeline and send the detected oxygen concentration value to the electronic device 71;

[0157] The pressure sensor 752 is used to detect the air pressure in the downhole pipeline gas and send the air pressure value to the electronic device 71.

[0158] When the electronic device 71 determines that the oxygen concentration and pressure exceed the standard, it can control the alarm unit 74 to sound an alarm.

[0159] In one embodiment, it further includes: a workshop environment monitoring unit 76; the workshop environment monitoring unit 76 includes a carbon dioxide sensor 761, a temperature sensor 762 and a humidity sensor 763;

[0160] The carbon dioxide sensor 761 is used to detect the carbon dioxide concentration in the flue gas treatment workshop and send the carbon dioxide concentration to the electronic device 71;

[0161] The temperature sensor 762 is used to detect the temperature in the flue gas treatment workshop and send the temperature to the electronic device 71;

[0162] The humidity sensor 763 is used to detect the humidity in the flue gas treatment workshop and send the humidity to the electronic device 71.

[0163] When the electronic device 71 determines that the above-mentioned temperature, humidity or carbon dioxide concentration exceeds the standard, it can control the alarm unit 74 to sound an alarm.

[0164] In one embodiment, it also includes: a flue gas pretreatment and transportation unit 77; the flue gas pretreatment and transportation unit 77 is used to pretreat and transport the power plant flue gas under the control of the electronic device 71, and transport the power plant flue gas to the underground pipeline.

[0165] The flue gas pretreatment and transportation unit 77 at least includes: an induced draft fan 771, an absorption tower 772, a steam-water separator 773, a pressure stabilizing tank 774, a compressor 775, and a dryer 777 connected in sequence;

[0166] The flue gas discharged from the power plant is processed in sequence by the induced draft fan 771, the absorption tower 772, the steam-water separator 773, the pressure-stabilizing tank 774, the compressor 775, and the dryer 777, and then injected into the underground pipeline.

[0167] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the above-mentioned downhole gas detection processing method are implemented. For example, the non-transitory computer-readable storage medium can be the above-mentioned memory 632 including program instructions, and the above-mentioned program instructions can be executed by the processor 622 of the electronic device 600 to complete the above-mentioned downhole gas detection processing method.

[0168] In another exemplary embodiment, a computer program product is also provided. The computer program product includes a computer program executable by a programmable device. The computer program has a code portion for executing the above-mentioned downhole gas detection processing method when executed by the programmable device.

[0169] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0170] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0171] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A method for processing underground gas, characterized in that: include: Obtain the downhole carbon dioxide concentration value; In response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold, controlling the valve group on the downhole pipeline to operate so as to discharge the power plant flue gas in the downhole pipeline to the surface and cut off the injection of the power plant flue gas; Wherein, the number of valve groups is one or more groups; Each valve group includes a smoke injection valve arranged on the downhole pipeline; and a first exhaust valve and a second exhaust valve respectively arranged on both sides of the smoke injection valve; The number of the valve groups is multiple, the downhole pipeline is divided into multiple sections, and a group of valves is respectively arranged on each section of the downhole pipeline; the obtaining of the downhole carbon dioxide concentration value includes: Acquire the carbon dioxide concentration value around each section of the downhole pipeline; in response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold, control the valve group on the downhole pipeline to act, including: for each section of the downhole pipeline before the last section of the downhole pipeline close to the wellhead, in response to determining that the carbon dioxide concentration value around the section of the downhole pipeline is greater than or equal to the predetermined carbon dioxide concentration threshold, control the exhaust valve in the valve group on the section of the downhole pipeline and the next section of the downhole pipeline of the section of the downhole pipeline to act, and control the smoke injection valve in the valve group on the section of the downhole pipeline to shut off; for the last section of the downhole pipeline close to the wellhead, in response to determining that the carbon dioxide concentration value around the section of the downhole pipeline is greater than or equal to the predetermined carbon dioxide concentration threshold, control the exhaust valve in the valve group on the section of the downhole pipeline to act, and control the smoke injection valve in the valve group on the section of the downhole pipeline to shut off; A third exhaust valve is also provided at a position close to the bottom of the well on the last section of the downhole pipeline close to the wellhead; in response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold, controlling the valve group on the downhole pipeline to act, including: For the last section of the downhole pipeline close to the wellhead, in response to determining that the carbon dioxide concentration value around the section of the downhole pipeline is greater than or equal to a predetermined carbon dioxide concentration threshold, the third exhaust valve is controlled to operate.

2. The downhole gas processing method according to claim 1, characterized in that: The number of the valve groups is one group; the smoke injection valve in the group of valves is arranged on the pipeline near the wellhead; the input end of the first exhaust valve in the group of valves is connected to the output end of the smoke injection valve, and the output end of the second exhaust valve is connected to the input end of the smoke injection valve.

3. The downhole gas processing method according to claim 1, characterized in that: The first exhaust valve and the second exhaust valve in each valve group are also connected to exhaust pipes respectively, wherein the exhaust pipes are embedded in the wall underground, and the output end is located on the ground, for transporting the gas exhausted by the first exhaust valve and the second exhaust valve to the ground.

4. The downhole gas processing method according to claim 1, characterized in that: The method further comprises: In response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold, the alarm device is controlled to sound an alarm.

5. The downhole gas processing method according to claim 1, characterized in that: After the alarm device is controlled to sound an alarm, the method further comprises: When the alarm duration reaches a predetermined duration threshold, if the carbon dioxide concentration value is still greater than or equal to the predetermined carbon dioxide concentration threshold, the pretreatment and transportation of the flue gas from the power plant are stopped.

6. A downhole gas processing device, characterized in that: include: An acquisition module is used to obtain the downhole carbon dioxide concentration value; A control module, in response to determining that the carbon dioxide concentration value is greater than or equal to a predetermined carbon dioxide concentration threshold, controls the valve group on the downhole pipeline to operate so as to discharge the power plant flue gas in the downhole pipeline to the surface and cut off the injection of the power plant flue gas; Wherein, the number of valve groups is one or more groups; Each valve group includes a smoke injection valve arranged on the downhole pipeline; and a first exhaust valve and a second exhaust valve respectively arranged on both sides of the smoke injection valve; The number of the valve groups is multiple, the downhole pipeline is divided into multiple sections, and a group of valves is respectively arranged on each section of the downhole pipeline; The acquisition module is also used to obtain the carbon dioxide concentration value around each section of the downhole pipeline; The control module is also used for, for each section of the downhole pipeline before the last section of the downhole pipeline close to the wellhead, in response to determining that the carbon dioxide concentration value around the section of the downhole pipeline is greater than or equal to a predetermined carbon dioxide concentration threshold, controlling the exhaust valve in the valve group on the section of the downhole pipeline and the next section of the downhole pipeline to operate, and controlling the smoke injection valve in the valve group on the section of the downhole pipeline to shut off; For the last section of downhole pipeline close to the wellhead, in response to determining that the carbon dioxide concentration value around the section of downhole pipeline is greater than or equal to a predetermined carbon dioxide concentration threshold, the exhaust valve in the valve group on the section of downhole pipeline is controlled to actuate, and the smoke injection valve in the valve group on the section of downhole pipeline is controlled to be closed; A third exhaust valve is also provided on the last section of the downhole pipeline close to the wellhead at a position close to the bottom of the well; The control module is also used to control the third exhaust valve to operate in response to determining that the carbon dioxide concentration value around the last section of the downhole pipeline close to the wellhead is greater than or equal to a predetermined carbon dioxide concentration threshold.

7. An electronic device, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 5.

8. A downhole gas processing system, characterized in that: It comprises the electronic device as claimed in claim 7; a downhole environment monitoring unit and an emptying and depressurizing unit respectively connected to the electronic device; The downhole environment monitoring unit is used to detect the gas around the downhole pipeline and send the detection result to the electronic device; The exhaust and pressure relief unit is used to control the exhaust and injection of power plant flue gas in the underground pipeline under the control of the electronic equipment.

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