Visual drilling and methane parameter measuring device

Abstract

The utility model belongs to the technical field of gas extraction, and discloses a visual drilling and methane parameter measuring device which comprises a measuring head, a methane sensor, a flow sensor, a pressure sensor, a temperature sensor, an image sensor, a signal processor, a power supply and an image display instrument. According to the visual drilling and methane parameter measuring device, real-time measurement of parameters such as methane concentration, flow, pressure and temperature in a drilling hole and a collecting pipe and visualization of the internal structure of the drilling hole can be achieved at the same time, and the efficiency and safety of gas extraction are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas extraction, and in particular relates to a visual drilling and methane parameter measuring device. Background Art

[0002] Gas extraction is one of the important measures for safe production in coal mines. By drilling holes in the coal seams, gas is extracted from the coal seams to reduce gas concentration and prevent gas explosion accidents. The effect of gas extraction is related to factors such as the quality, location, direction, and density of the boreholes. Therefore, real-time monitoring and analysis of the parameters of the boreholes is of great significance for optimizing the gas extraction plan and improving the efficiency of gas extraction.

[0003] At present, the determination of methane parameters in boreholes and manifolds mainly adopts sampling analysis method or online analysis method. The sampling analysis method is to take out the gas samples in the borehole or manifold and send them to the laboratory for analysis to obtain parameters such as methane concentration, flow, pressure, and temperature. The online analysis method is to install the sensor directly on the borehole or manifold to measure the methane concentration, flow, pressure, temperature and other parameters in real time, and send the measurement data to the monitoring system through signal transmission lines or wireless transmission methods. The advantages of this method are short measurement cycle, real-time monitoring, and relatively accurate measurement results.

[0004] Therefore, there is currently no device that can simultaneously achieve real-time measurement of methane parameters in the borehole and the manifold and visualization of the internal structure of the borehole, which poses certain technical difficulties for the optimization and management of gas extraction.

[0005] Through the above analysis, the problems and defects of the prior art are as follows:

[0006] (1) The disadvantages of the sampling analysis method are that the measurement cycle is long and real-time monitoring cannot be achieved. In addition, the sampling process may cause changes in the gas sample, affecting the accuracy of the measurement results.

[0007] (2) The disadvantage of the online analysis method is that the installation and maintenance of the sensor is relatively difficult, and it cannot intuitively reflect the structure and status inside the borehole, such as the direction, inclination, curvature, blockage, leakage, etc. of the borehole, which will also affect the effect of gas extraction. Utility Model Content

[0008] In view of the problems existing in the prior art, the utility model provides a visual drilling and methane parameter measuring device.

[0009] The utility model is implemented in this way, a visual drilling and methane parameter measuring device, the visual drilling and methane parameter measuring device comprises a measuring head, a methane sensor, a flow sensor, a pressure sensor, a temperature sensor, an image sensor, a signal processor, a power supply and an image display.

[0010] Furthermore, the measuring head is a hollow cylinder, one end of which is provided with a connection port for connecting with a borehole or a manifold, and the other end of which is provided with a closing cover, the interior of which is provided with a measuring cavity, and the outer wall of which is provided with a fixing ring for fixing the measuring head in the borehole or the manifold;

[0011] Furthermore, the methane sensor is a laser methane sensor, one end of which is provided with a light source, and the other end of which is provided with a photodetector, which is connected to the measuring head through an optical fiber, and the light source and the photodetector are respectively arranged on the connecting port and the closing cover of the measuring head to form an optical path for measuring the methane concentration in the measuring cavity;

[0012] Further, the flow sensor is a differential pressure flow sensor, one end of which is provided with a high pressure port, and the other end of which is provided with a low pressure port, which is connected to the measuring head through a pressure tube, and the high pressure port and the low pressure port are respectively arranged on the connecting port and the closing cover of the measuring head to form a differential pressure for measuring the flow in the measuring cavity;

[0013] Further, the pressure sensor is a piezoresistive pressure sensor, one end of which is provided with a pressure interface, which is connected to the measuring head through a pressure tube, and the pressure interface is arranged on the closing cover of the measuring head, and is used to measure the pressure in the measuring cavity;

[0014] Further, the temperature sensor is a thermocouple temperature sensor, one end of which is provided with a temperature interface, which is connected to the measuring head through a temperature line, and the temperature interface is arranged on the closed cover of the measuring head, and is used to measure the temperature in the measuring cavity;

[0015] Furthermore, the image sensor is a miniature camera, one end of which is provided with an image interface, which is connected to the measuring head through an image line, and the image interface is arranged on the closed cover of the measuring head, and is used to collect images in the measuring cavity;

[0016] Furthermore, the signal processor is a microcomputer, which is connected to each sensor through a signal line, and is used to receive and process the signal of each sensor, and send the processed data and image to the monitoring system through a wireless module;

[0017] Furthermore, the power source is a lithium battery, which is connected to the signal processor and each sensor through a power line to provide power for the signal processor and each sensor;

[0018] Furthermore, the image display device is a liquid crystal display screen, which is connected to the signal processor via a wireless module and is used to receive and display images sent by the signal processor to achieve visualization of the internal structure of the borehole.

[0019] In combination with the above technical solutions and the technical problems solved, please analyze the advantages and positive effects of the technical solutions to be protected by this utility model from the following aspects:

[0020] First, in view of the technical problems existing in the above-mentioned prior art and the difficulty in solving the problems, closely combined with the technical solutions to be protected by the utility model and the results and data in the research and development process, the technical problems solved by the technical solutions of the utility model are analyzed in detail and in depth, and some creative technical effects brought about after solving the problems are analyzed. The specific description is as follows:

[0021] The utility model provides a visualized drilling and methane parameter measuring device, the structure of which includes a measuring head, a methane sensor, a flow sensor, a pressure sensor, a temperature sensor, an image sensor, a signal processor, a power supply and an image display. When the visualized drilling and methane parameter measuring device of the utility model is used, when the gas in the borehole or the manifold flows through the measuring cavity, each sensor respectively collects the methane concentration, flow, pressure, temperature and image in the measuring cavity, converts it into an electrical signal, transmits it to the signal processor through a signal line, and the signal processor processes the electrical signal to obtain data and images, which are sent to a monitoring system through a wireless module. The monitoring system analyzes and displays the data and images, and the image display receives the image through the wireless module and displays it, thereby realizing the visualization of the internal structure of the borehole. Compared with the sampling analysis method and the online analysis method, the utility model can simultaneously realize the real-time measurement of the methane concentration, flow, pressure, temperature and other parameters in the borehole and the manifold and the visualization of the internal structure of the borehole, thereby improving the efficiency and safety of gas extraction.

[0022] Second, considering the technical solution as a whole or from the perspective of the product, the technical effects and advantages of the technical solution to be protected by the utility model are described in detail as follows:

[0023] The visualized drilling and methane parameter determination device of the utility model adopts a variety of sensors and signal processors to achieve accurate measurement of methane parameters in the borehole and the manifold, and adopts a micro camera and an image display to achieve visualization of the internal structure of the borehole, so that the direction, inclination, bend, blockage, leakage and other problems of the borehole can be discovered in time, providing effective technical support for the optimization and management of gas extraction.

[0024] Third, as auxiliary evidence of the inventiveness of the claims of the utility model, it is also reflected in the following important aspects:

[0025] (1) The expected benefits and commercial value of the technical solution of this utility model after transformation are:

[0026] Compared with traditional measurement methods, the visualized drilling and methane parameter measurement device provided by the utility model realizes real-time measurement and visualization of the internal structure of the borehole, improves the efficiency and safety of gas extraction, adopts a variety of sensors and signal processors to achieve precise measurement, has a simple structure, is easy to install, and has low maintenance costs. It is suitable for gas extraction projects of different types and scales, and has broad development space in the field of gas extraction technology.

[0027] (2) Whether the technical solution of the utility model solves the technical problems that people have been eager to solve but have never been able to solve successfully:

[0028] The visualized drilling and methane parameter measuring device provided by the utility model can simultaneously realize the real-time measurement of methane parameters in the drilling hole and the manifold, and obtain parameters such as methane concentration, flow, pressure, temperature, etc. The measuring cycle is short, and the sampling process will not cause changes in the gas sample. The measurement result has good accuracy, the installation and maintenance of the sensor are relatively simple, and the structure and state of the inside of the drilling hole can be intuitively reflected, thereby optimizing and managing the gas extraction technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a visual drilling and methane parameter determination device provided by an embodiment of the utility model;

[0030] Figure 2 It is a schematic diagram of the internal structure of a visual drilling and methane parameter determination device provided by an embodiment of the utility model;

[0031] Figure 3 This is a schematic diagram of the working principle of a visual drilling and methane parameter determination device provided by the embodiment of the utility model

[0032] In the figure: 1. Measuring head; 2. Methane sensor; 3. Flow sensor; 4. Pressure sensor; 5. Temperature sensor; 6. Image sensor; 7. Signal processor; 8. Power supply; 9. Image display. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0034] Typical hardware types and common models or manufacturers of the system provided by the present invention are as follows:

[0035] Measuring heads: Usually custom designed, designed and manufactured according to specific measurement needs and environments.

[0036] Methane sensor (laser methane sensor): Honeywell's Sensepoint XRL series, or Polytron 8100EC.

[0037] Flow sensor (differential pressure flow sensor): ABB's Differential Pressure Flow Meter, or Emerson's Rosemount Annubar Flow Meter.

[0038] Pressure sensor (piezoresistive pressure sensor): Honeywell's Trustability Series, or Siemens' SITRANS P DS III. Pressure range and accuracy vary depending on the application.

[0039] Temperature sensor (thermocouple temperature sensor): Omega Engineering's thermocouple, or Fluke's thermocouple sensor. The type of thermocouple (such as K-type, J-type, etc.) depends on the measurement temperature range.

[0040] Image sensor (micro camera): Sony's IMX series CMOS image sensor, or Raspberry Pi Camera Module. Resolution and size can be selected according to requirements.

[0041] Signal processor (microcomputer): Raspberry Pi, Arduino, or Intel's NUC series. The choice depends on processing power and interface requirements.

[0042] Power source (lithium battery): Panasonic's lithium-ion battery, or Samsung SDI's battery. Battery capacity and size depend on energy requirements and space constraints.

[0043] Image display (liquid crystal display): small LCD panel from LG or Samsung, or dedicated industrial monitor. Size and resolution depend on display requirements.

[0044] like Figure 1 As shown, a visual drilling and methane parameter determination device includes a measuring head 1, a methane sensor 2, a flow sensor 3, a pressure sensor 4, a temperature sensor 5, an image sensor 6, a signal processor 7, a power supply 8, and an image display 9.

[0045] like Figure 2As shown, the measuring head 1 is a hollow cylinder, one end of which is provided with a connecting port 11 for connecting to a borehole or a manifold, and the other end of which is provided with a closing cover 12, the interior of which is provided with a measuring cavity 13, and the outer wall of which is provided with a fixing ring 14 for fixing the measuring head 1 in the borehole or the manifold.

[0046] The methane sensor 2 is a laser methane sensor, one end of which is provided with a light source 21, and the other end of which is provided with a photodetector 22, which is connected to the measuring head 1 through an optical fiber 23, and the light source 21 and the photodetector 22 are respectively arranged on the connecting port 11 and the closing cover 12 of the measuring head 1, forming an optical path for measuring the methane concentration in the measuring cavity 13. The working principle of the methane sensor 2 is that the light source 21 emits a laser of a certain wavelength, which is transmitted to the measuring cavity 13 through the optical fiber 23, absorbed by the methane gas in the measuring cavity 13, and then transmitted to the photodetector 22 through the optical fiber 23, and the photodetector 22 converts the optical signal into an electrical signal, and the intensity of the electrical signal is proportional to the methane concentration, thereby realizing the measurement of the methane concentration.

[0047] The flow sensor 3 is a differential pressure flow sensor, one end of which is provided with a high pressure port 31, and the other end of which is provided with a low pressure port 32. It is connected to the measuring head 1 through a pressure tube 33. The high pressure port 31 and the low pressure port 32 are respectively arranged on the connecting port 11 and the closing cover 12 of the measuring head 1 to form a differential pressure for measuring the flow in the measuring cavity 13. The working principle of the flow sensor 3 is that when the gas in the measuring cavity 13 flows through, a certain pressure difference will be generated due to the change in the cross section of the measuring cavity 13. The pressure difference is proportional to the flow rate and is transmitted to the flow sensor 3 through the pressure tube 33. The flow sensor 3 converts the pressure signal into an electrical signal, and the strength of the electrical signal is proportional to the flow rate, thereby realizing the measurement of the flow rate.

[0048] The pressure sensor 4 is a piezoresistive pressure sensor, one end of which is provided with a pressure interface 41, which is connected to the measuring head 1 through a pressure tube 42, and the pressure interface 41 is arranged on the closing cover 12 of the measuring head 1, and is used to measure the pressure in the measuring cavity 13. The working principle of the pressure sensor 4 is that when the gas pressure in the measuring cavity 13 changes, the piezoresistive sheet of the pressure sensor 4 will be deformed, the degree of deformation is proportional to the pressure, and the resistance of the piezoresistive sheet will change accordingly, and the change in resistance is proportional to the pressure, thereby realizing the measurement of pressure.

[0049] The temperature sensor 5 is a thermocouple temperature sensor, one end of which is provided with a temperature interface 51, which is connected to the measuring head 1 through a temperature line 52, and the temperature interface 51 is arranged on the closing cover 12 of the measuring head 1, and is used to measure the temperature in the measuring cavity 13. The working principle of the temperature sensor 5 is that when the temperature of the gas in the measuring cavity 13 changes, the two different metals of the temperature sensor 5 will cause a thermoelectric effect, generating a certain thermoelectric electromotive force, which is proportional to the temperature, thereby realizing the temperature measurement.

[0050] The image sensor 6 is a miniature camera, one end of which is provided with an image interface 61, which is connected to the measuring head 1 through an image line 62, and the image interface 61 is arranged on the closed cover 12 of the measuring head 1, and is used to collect the image in the measuring cavity 13. The working principle of the image sensor 6 is that when the gas in the measuring cavity 13 flows through, it will have a certain impact on the light in the measuring cavity 13, thereby affecting the image collection of the image sensor 6, and the image sensor 6 converts the image signal into an electrical signal, and the content of the electrical signal is proportional to the image, thereby realizing the image collection.

[0051] The signal processor 7 is a microcomputer, which is connected to each sensor through a signal line 71, and is used to receive and process the signals of each sensor, and send the processed data and images to the monitoring system through the wireless module 72. The working principle of the signal processor 7 is that when each sensor collects the methane parameters and images in the measuring cavity 13, the corresponding electrical signals will be transmitted to the signal processor 7 through the signal line 71. The signal processor 7 amplifies, filters, converts, calibrates, calculates, and processes the electrical signals to obtain data such as methane concentration, flow, pressure, temperature, and the image in the measuring cavity 13, and then sends the data and images to the monitoring system in the form of wireless signals through the wireless module 72 to achieve data and image transmission.

[0052] The power source 8 is a lithium battery, which is connected to the signal processor 7 and each sensor through a power line 81, and is used to provide power to the signal processor 7 and each sensor. The working principle of the power source 8 is that when the signal processor 7 and each sensor are working, a certain amount of electric energy will be consumed. The power source 8 provides electric energy to the signal processor 7 and each sensor through the power line 81 to ensure their normal operation. The capacity and life of the power source 8 should be selected and replaced according to actual needs.

[0053] The image display 9 is a liquid crystal display screen, which is connected to the signal processor 7 through a wireless module 91, and is used to receive and display the image sent by the signal processor 7 to realize the visualization of the internal structure of the borehole. The working principle of the image display 9 is that when the signal processor 7 sends the image in the measuring cavity 13 in the form of a wireless signal, the image display 9 receives the wireless signal through the wireless module 91 and converts it into an image signal. The content of the image signal is proportional to the image, thereby realizing the display of the image.

[0054] like Figure 3As shown, a schematic diagram of the working principle of a visual drilling and methane parameter determination device is shown, the measuring head 1 is connected to the borehole or the manifold through the connecting port 11, the fixing ring 14 is used to fix the position of the measuring head 1 in the borehole or the manifold, the measuring cavity 13 is connected to the gas in the borehole or the manifold, each sensor is connected to the measuring head 1 through its own interface and line, the signal processor 7 is connected to each sensor through the signal line 71, the power supply 8 is connected to the signal processor 7 and each sensor through the power line 81, and the image display 9 is connected to the signal processor 7 through the wireless module 91. When the gas in the borehole or the manifold flows through the measuring cavity 13, each sensor respectively collects the methane concentration, flow rate, pressure, temperature and image in the measuring cavity 13, converts it into an electrical signal, transmits it to the signal processor 7 through the signal line 71, the signal processor 7 processes the electrical signal to obtain data and images, and sends them to the monitoring system through the wireless module 72, the monitoring system analyzes and displays the data and images, and the image display 9 receives the image through the wireless module 91 and displays it, so as to realize the visualization of the internal structure of the borehole.

[0055] The visualized drilling and methane parameter measuring device of the utility model can simultaneously realize real-time measurement of parameters such as methane concentration, flow, pressure, temperature, etc. in the borehole and the manifold, thereby improving the efficiency and safety of gas extraction. It adopts a variety of sensors and signal processors to realize accurate measurement of methane parameters in the borehole and the manifold, and adopts a micro camera and an image display to realize visualization of the internal structure of the borehole, so that problems such as the direction, inclination, bending, blockage, and leakage of the borehole can be discovered in time, providing effective technical support for the optimization and management of gas extraction.

[0056] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0057] The above description is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention shall be covered by the protection scope of the present invention.

Claims

1. A visual drilling and methane parameter determination device, characterized in that: The visual drilling and methane parameter determination device comprises a measuring head, a methane sensor, a flow sensor, a pressure sensor, a temperature sensor, an image sensor, a signal processor, a power supply and an image display; The measuring head is a hollow cylinder, one end of which is provided with a connection port for connecting with a borehole or a manifold, and the other end of which is provided with a closing cover, the interior of which is provided with a measuring cavity, and the outer wall of which is provided with a fixing ring for fixing the measuring head in the borehole or the manifold; The methane sensor is a laser methane sensor, one end of which is provided with a light source, and the other end of which is provided with a photodetector, which is connected to the measuring head through an optical fiber, and the light source and the photodetector are respectively arranged on the connecting port and the closing cover of the measuring head to form an optical path for measuring the methane concentration in the measuring cavity; The flow sensor is a differential pressure flow sensor, one end of which is provided with a high pressure port, and the other end of which is provided with a low pressure port, which is connected to the measuring head through a pressure pipe, and the high pressure port and the low pressure port are respectively arranged on the connecting port and the closing cover of the measuring head to form a differential pressure for measuring the flow in the measuring cavity; The pressure sensor is a piezoresistive pressure sensor, one end of which is provided with a pressure interface, which is connected to the measuring head through a pressure tube, and the pressure interface is arranged on the closing cover of the measuring head, and is used to measure the pressure in the measuring cavity; The temperature sensor is a thermocouple temperature sensor, one end of which is provided with a temperature interface, which is connected to the measuring head through a temperature line, and the temperature interface is arranged on the closed cover of the measuring head, and is used to measure the temperature in the measuring cavity; The image sensor is a miniature camera, one end of which is provided with an image interface, which is connected to the measuring head through an image line, and the image interface is arranged on the closed cover of the measuring head, and is used to collect images in the measuring cavity; The signal processor is a microcomputer, which is connected to each sensor through a signal line, and is used to receive and process the signal of each sensor, and send the processed data and image to the monitoring system through a wireless module.

2. The visual drilling and methane parameter determination device according to claim 1, characterized in that: The power source is a lithium battery, which is connected to the signal processor and each sensor through a power line, and is used to provide power for the signal processor and each sensor.

3. The visual drilling and methane parameter determination device according to claim 1, characterized in that: The image display is a liquid crystal display screen, which is connected to the signal processor through a wireless module and is used to receive and display images sent by the signal processor to realize the visualization of the internal structure of the borehole.

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