Natural gas hydrate infrared thermal imaging detection system

Abstract

The utility model discloses a natural gas hydrate infrared thermal imaging detection system which comprises a frame 1, a Y-axis direction movement structure 2, an X-axis direction movement structure 3 and a camera holder 4, and the Y-axis direction movement structure 2 comprises a left half part fixedly arranged on one side of the frame 1 and a right half part fixedly arranged on the other side of the frame 1; the two ends of the X-axis direction movement structure 3 are arranged on the left half part and the right half part respectively; the left half part and the right half part are each provided with a power assembly used for driving the X-axis direction movement structure 3 to move in the Y-axis direction, and the X-axis direction movement structure 3 is movably provided with a camera shooting holder 4 and a power assembly used for driving the camera shooting holder 4 to move in the X-axis direction. A thermal imager and a visible light camera are mounted on the camera holder 4, and the camera holder 4 is used for shooting a temperature cloud picture.

Description

Technical Field

[0001] This utility model relates to the field of infrared thermal imaging detection technology for hydrate cores, and specifically to an infrared thermal imaging detection system for natural gas hydrates. Background Technology

[0002] Natural gas hydrate core testing technology mainly includes conventional onshore laboratory testing and rapid onshore laboratory testing, covering resistivity, magnetic susceptibility, gamma density, P-wave velocity, and novel infrared thermal imaging detection technologies. Onshore laboratory testing is the primary existing method. Due to the stringent stability conditions of natural gas hydrates, there is a significant time gap between obtaining core samples from the extraction vessel and conducting testing in the onshore laboratory. During this time, the natural gas hydrates within the core sample tubes may dissociate or melt, posing obstacles to subsequent research and analysis. Therefore, accurate sampling and transfer of the natural gas hydrate core are essential for obtaining reliable test results. Onshore laboratory testing represents the most promising future method. It can be modularly mounted on the extraction vessel in a container, allowing for immediate transfer of core sample tubes for testing. This method offers advantages such as speed and real-time performance.

[0003] The MSCL system can measure parameters such as resistivity, magnetic susceptibility, gamma density, P-wave velocity, high-resolution optical imaging of the surface, and thermal imaging temperature contour maps of core sample tubes. MSCL-IR is a natural gas hydrate core infrared thermal imaging detection system. This system can be used to quickly and non-destructively determine the occurrence of natural gas hydrates in core sample tubes, and is a relatively practical method for determining the distribution of natural gas hydrates in core sample tubes.

[0004] The MSCL-IR infrared imaging system comprises a computer-controlled infrared camera mounted on a sliding support that moves along the core to acquire infrared images. A sliding rail system provides the camera's position relative to the core. After sample collection, the system acquires infrared images with depth markers. These images, equipped with an electronic scale, are displayed in real-time on a monitor, clearly showing the corresponding infrared image according to the core's length.

[0005] Currently, there is a lack of suitable systems and equipment for on-site analysis of natural gas hydrate core samples, particularly infrared thermal imaging systems. Infrared thermal imaging technology offers advantages such as non-destructive testing, high speed, high accuracy, cost-effectiveness, and suitability for large-scale testing. my country has already applied infrared thermal imaging technology to numerous fields, including non-destructive testing of aerospace materials, fire safety early warning, power system inspection, and medical health monitoring, achieving good results. Considering the enormous potential and economic benefits of natural gas hydrates, my country is continuously increasing its investment in research on natural gas hydrate extraction and detection technologies. Infrared thermal imaging technology will become the most important natural gas hydrate core detection technology in the future.

[0006] With the development of high-fidelity sampling technology for natural gas hydrate cores, the design of corresponding shipborne rapid detection technology for natural gas hydrate cores plays a crucial role in future hydrate resource exploration and commercial exploitation. Therefore, this invention addresses the urgent need for sample drilling and on-site analysis during natural gas hydrate resource trial production by establishing a natural gas hydrate core infrared thermal imaging detection system. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides an infrared thermal imaging detection system for natural gas hydrates.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] An infrared thermal imaging detection system for natural gas hydrates includes:

[0010] frame;

[0011] The Y-axis moving structure includes a left half fixedly disposed on one side of the frame and a right half fixedly disposed on the other side of the frame.

[0012] The X-axis motion structure has two ends respectively located in the left half and the right half; the left half and the right half are respectively provided with a power component for driving the X-axis motion structure to move along the Y-axis direction, and the X-axis motion structure is movably equipped with a camera pan-tilt unit and a power component for driving the camera pan-tilt unit to move along the X-axis direction.

[0013] As described above, the infrared thermal imaging detection system for natural gas hydrates further includes a frame comprising multiple aluminum profiles, which are interconnected to form the frame. Angle brackets are fixed at the right angles of the frame via connectors. The connectors include bolts and trapezoidal slider nuts that cooperate with each other. Rubber feet are provided at the bottom of the frame.

[0014] As described above, the infrared thermal imaging detection system for natural gas hydrates further includes, in a further embodiment, the left half of the Y-axis motion structure comprising: a second stepper motor, a stepper motor mounting plate, an optical axis locking ring, a coupling, a lead screw, a lead screw nut, a second connecting plate, an optical axis, a linear sliding flange bearing, and a horizontal optical axis support. The two optical axes are respectively fixed to the aluminum profile of the frame via the horizontal optical axis support. The second stepper motor and the stepper motor mounting plate are connected. The second stepper motor mounting plate is fixed to the optical axis via two sets of optical axis locking rings. The output shaft of the second stepper motor is connected to the lead screw via a coupling. The lead screw nut and the linear sliding flange bearing are fixed to the second connecting plate. The lead screw passes through the lead screw nut, and the optical axis passes through the linear sliding flange bearing.

[0015] As described above, the infrared thermal imaging detection system for natural gas hydrates further includes, in a further embodiment, the left half of the Y-axis motion structure comprising: a Y-axis limit switch connecting plate, a Y-axis limit switch, and a limit switch trigger, wherein the Y-axis limit switch is fixed on the Y-axis limit switch connecting plate, the Y-axis limit switch connecting plate is fixed on an aluminum profile, and the limit switch trigger is fixed on a linear sliding flange bearing.

[0016] In the natural gas hydrate infrared thermal imaging detection system described above, the right half of the Y-axis moving structure and the left half of the Y-axis moving structure are symmetrical.

[0017] The natural gas hydrate infrared thermal imaging detection system described above further includes the following X-axis motion structure: a first stepper motor, a first connecting plate, a driving synchronous pulley, a synchronous belt, a V-shaped slide rail, a synchronous belt fixing frame, pulleys, a sliding plate, a driven synchronous pulley, a driven synchronous pulley fixing shaft, and a third connecting plate. The first stepper motor is fixed to the first connecting plate, which is fixed to the V-shaped slide rail. The driving synchronous pulley is fixed to the output shaft of the first stepper motor. The driven synchronous pulley is mounted on the driven synchronous pulley fixing shaft, which is fixed between the third and fourth connecting plates. The synchronous belt passes over the driving and driven synchronous pulleys and is finally fixed to the synchronous belt fixing frame. The synchronous belt fixing frame is fixed to the sliding plate. Multiple sets of pulleys are installed on the sliding plate, clamping the V-shaped slide rail in the middle to drive the sliding plate to move along the X-axis.

[0018] As described above, the infrared thermal imaging detection system for natural gas hydrates further includes, in a further embodiment, the X-axis motion structure comprising: an X-axis limit switch fixing plate and an X-axis limit switch, wherein the X-axis limit switch is fixed on the X-axis limit switch fixing plate, the X-axis limit switch fixing plate is fixed on a second connecting plate, and two sets of X-axis limit switches are provided.

[0019] The infrared thermal imaging detection system for natural gas hydrates described above further includes a camera pan-tilt unit comprising: a pan-tilt unit connecting plate, a thermal imager, a thermal imager mounting bracket, a visible light camera, and a visible light camera mounting bracket. The pan-tilt unit connecting plate is fixed to a sliding plate, the thermal imager is fixed to the pan-tilt unit connecting plate via the thermal imager mounting bracket, and the visible light camera is fixed to the pan-tilt unit connecting plate via the visible light camera mounting bracket.

[0020] Compared with the prior art, the advantages of this utility model are as follows:

[0021] (1) The device of this utility model can perform infrared thermal imaging scanning on the core sample tube containing natural gas hydrate, and quickly obtain visible light images and infrared thermal images of the core sample tube. The device is small and highly integrated, and can be used in shipborne laboratories.

[0022] (2) This device can perform infrared thermal imaging scanning on core sample tubes with a core diameter not exceeding 50 mm and a length not exceeding 450 mm. The core sample tube is installed on the lower plane of the device. The host computer operates the Y-axis motion mechanism to make the size of the currently acquired infrared thermal image appropriate. Then, the X-axis motion mechanism is operated to make the camera pan-tilt unit take multiple sets of thermal images along the core direction and transmit them to the host computer. The host computer then synthesizes a temperature cloud map. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the system structure of an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the frame structure of an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the left half of the Y-axis motion structure according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the right half of the Y-axis motion structure according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the X-axis motion structure of an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the camera pan-tilt structure according to an embodiment of the present utility model;

[0030] Figure 7 This is a system hardware circuit diagram of an embodiment of the present utility model;

[0031] Figure 8 This is a flowchart of the control program of an embodiment of the present utility model;

[0032] Figure 9 This is a diagram showing the composition of the host computer interface in an embodiment of this utility model;

[0033] Figure 10 This is a diagram of the host computer interface of an embodiment of the present utility model. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0035] Example:

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, in the embodiments of this utility model are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0037] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] See Figure 1This embodiment provides an infrared thermal imaging detection system for natural gas hydrates, comprising: a frame 1, a Y-axis motion structure 2, an X-axis motion structure 3, and a camera pan-tilt unit 4. The Y-axis motion structure 2 includes a left half fixedly disposed on one side of the frame 1 and a right half fixedly disposed on the other side of the frame 1. The two ends of the X-axis motion structure 3 are respectively disposed on the left half and the right half. The left half and the right half are respectively provided with power components for driving the X-axis motion structure 3 to move along the Y-axis. The X-axis motion structure 3 is movably equipped with the camera pan-tilt unit 4 and the power components for driving the camera pan-tilt unit 4 to move along the X-axis. The camera pan-tilt unit 4 is equipped with a thermal imager and a visible light camera for capturing temperature cloud images.

[0039] In some embodiments, the frame structure is designed as follows: Figure 2 As shown, the frame includes multiple aluminum profiles 1-1, which are interconnected to form the frame 1. Angle brackets 1-2 are fixed at the right angles of the frame 1 by connectors. The connectors include bolts 1-3 and trapezoidal slider nuts 1-4 that cooperate with each other. The bottom of the frame is provided with rubber pads 1-5 for shock absorption and anti-slip.

[0040] In some embodiments, the Y-axis moving structure (left half) is as follows: Figure 3As shown, the system includes a second stepper motor 2-6, a stepper motor mounting plate 2-7, an optical axis locking ring 2-8, a coupling 2-9, a lead screw 2-10, a lead screw nut 2-11, a second connecting plate 2-12, an optical axis 2-13, a linear sliding flange bearing 2-14, a horizontal optical axis support 2-15, a Y-axis limit switch connecting plate 2-16, a Y-axis limit switch 2-17, and a limit switch trigger 2-18. The optical axis 2-13 is fixed to the aluminum profile 1-1 via the horizontal optical axis support 2-15, providing a sliding shaft for the linear sliding flange bearing 2-14. The second stepper motor 2-6 is connected to the stepper motor mounting plate 2-7 via bolts. The stepper motor mounting plate 2-7 is fixed to the optical axis 2-12 via two sets of optical axis locking rings 2-8, used to fix the power source. The output shaft of the second stepper motor 2-6 is connected to the lead screw 2-10 via a coupling. The lead screw nut 2-11 and the linear sliding flange bearing 2-14 are bolted to the second connecting plate 2-12 to support the X-axis movement structure. The lead screw 2-10 passes through the lead screw nut 2-11, and the optical axis 2-13 passes through the linear sliding flange bearing 2-14. The lead screw 2-10 and the optical axis 2-13 together limit the displacement direction of the second connecting plate 2-12, while the second stepper motor 2-6 provides the power for the vertical movement of the second connecting plate 2-12. The Y-axis limit switch 2-17 is bolted to the Y-axis limit switch connecting plate 2-16, which is then bolted to the aluminum profile 1-1 to limit vertical displacement. The limit switch trigger 2-18 is bolted to the linear sliding flange bearing 2-14 to trigger the Y-axis limit switch 2-17.

[0041] In some embodiments, the Y-axis moving structure (right half) is as follows: Figure 4 As shown, it includes the same components as the moving structure on the left. The second connecting plate 2-12 and the fourth connecting plate 2-20 jointly support the moving structure in the X-axis direction. The rising and falling of the moving structure in the X-axis direction are realized through the synchronous cooperation of the second stepper motor 2-6 and the third stepper motor 2-19.

[0042] The principle of motion in the Y-axis direction is as follows: The power output from the second stepper motor 2-6 is transmitted to the lead screw 2-10 through the coupling 2-9. The rotation of the lead screw 2-10 drives the lead screw nut 2-11 to rotate. The force on the lead screw nut 2-11 can be decomposed into horizontal and Y-axis directions. Since the lead screw nut 2-11 is fixed to the second connecting plate 2-12 by bolts, and the second connecting plate 2-12 is fixed to the optical axis by the linear sliding flange bearing 2-14, it cannot rotate in the horizontal direction. The power transmitted by the lead screw 2-10 can only act in the Y-axis direction, thus enabling motion in the Y-axis direction.

[0043] In some embodiments, the X-axis moving structure is as follows: Figure 5As shown, the system includes a first stepper motor 3-21, a first connecting plate 3-22, a driving synchronous pulley 3-23, an X-axis limit switch fixing plate 3-24, an X-axis limit switch 3-25, a synchronous belt 3-26, a V-shaped slide rail 3-27, a synchronous belt fixing bracket 3-28, a pulley 3-29, a sliding plate 3-30, a driven synchronous pulley 3-31, a driven synchronous pulley fixing shaft 3-32, a nut 3-33, and a third connecting plate 3-34. The first stepper motor 3-21 is bolted to the first connecting plate 3-22, which is then bolted to the V-shaped slide rail 3-27. The driving synchronous pulley 3-23 is bolted to the output shaft of the first stepper motor 3-21. Driven synchronous pulley 3-31 is mounted on driven synchronous pulley fixed shaft 3-32, which is then fixed between the third connecting plate 3-34 and the fourth connecting plate 2-20 by a pair of swivel nuts 3-33. Synchronous belt 3-26 passes over driving synchronous pulley 3-23 and driven synchronous pulley 3-31, and is finally fixed to synchronous belt fixing bracket 3-28. Synchronous belt fixing bracket 3-28 is bolted to slide plate 3-30, which has three sets of pulleys 3-29 that clamp a V-shaped slide rail in the middle, driving the slide plate 3-30 to move left and right. X-axis limit switch 3-25 is bolted to X-axis limit switch fixing plate 3-24, which is then bolted to the second connecting plate. There are two sets of X-axis limit switches 3-25, used to limit left and right displacement.

[0044] The motion principle in the X-axis direction is as follows: the driving synchronous pulley 3-23, the driven synchronous pulley 3-31, the synchronous belt 3-26, and the synchronous belt fixing frame 3-28 form a loop. When the first stepper motor 3-21 rotates, the output power is transmitted to the driving synchronous pulley 3-23. The driving synchronous pulley 3-23 drives the synchronous belt fixing frame 3-28 to move left and right through the synchronous belt 3-26, thus realizing the motion in the X-axis direction.

[0045] In some embodiments, the camera pan-tilt unit, such as Figure 6 As shown, the system includes a gimbal connection plate 4-35, a thermal imager 4-36, a thermal imager mount 4-37, a visible light camera 4-38, and a visible light camera mount 4-39. The gimbal connection plate 4-35 is bolted to the slide plate 3-30. The thermal imager 4-36 is fixed to the gimbal connection plate 4-35 via a set of thermal imager mounts 4-37. The visible light camera 4-38 is fixed to the gimbal connection plate via a set of visible light camera mounts 4-39.

[0046] In some embodiments, the system hardware circuitry is configured as follows: Figure 7As shown, the main components include a power supply circuit, an STM32 main controller circuit, a wireless communication circuit, and a closed-loop stepper motor driver circuit. The power supply circuit generates 12V, 5V, and 3.3V voltages to power the STM32 main controller circuit, the wireless communication circuit, and the closed-loop stepper motor driver circuit. The STM32, as the main controller, is responsible for controlling the transmission and reception communication between the wireless communication circuit and the host computer, as well as sending enable signals, pulse signals, and direction signals to the closed-loop stepper motor driver to control the stepper motor's movement. It also controls the operation of modules such as the serial port download circuit, the button circuit, and the display circuit. The wireless communication circuit's transmitting end receives the serial port signals transmitted by the STM32 control circuit, modulates the signals through the transmitting chip, and transmits them through the antenna. The receiving end receives the modulated signals, demodulates and analyzes them, and then transmits them to the host computer through the serial port circuit to realize the wireless communication function. The control chip of the closed-loop stepper motor driver circuit is responsible for receiving the enable signal, pulse signal and direction signal transmitted by the STM32 control circuit, controlling the stepper motor through the stepper motor driver, and then analyzing the position of the output shaft through the signal feedback from the magnetic encoder to achieve high-precision control of the stepper motor.

[0047] System program flowchart as follows Figure 8 As shown. First, initialization is required. After calling the initialization command, various system data indicators are displayed on the screen. The system waits for all peripherals to complete initialization before entering the main loop program. The main loop program includes two functions: a button response function and a serial port response function. These two functions execute cyclically. When a button is pressed or a command is received from the host computer, the stepper motor is controlled to perform the corresponding movement. While the main loop program is executing, an external interrupt is waiting to be triggered. Once a limit switch is triggered, the interrupt response program is immediately entered, controlling the stepper motor to stop promptly. When the limit switch is released, the control command is also released. After the camera pan-tilt unit moves to the designated position, the visible light camera and thermal imager are controlled through the host computer interface to take pictures and send the photos back to the host computer.

[0048] The upper computer of the natural gas hydrate core infrared thermal imaging detection system consists of the following components: Figure 9As shown, the interface is mainly divided into a camera control interface and a wireless communication control interface. The camera interface is further divided into a camera display area, a camera control area, an image control area, an algorithm selection area, and a file control area. The camera control area is responsible for establishing communication with the thermal imager and camera; the camera display area is responsible for displaying the current image, captured image, and composite image; the image control area is responsible for image switching and display; the algorithm selection area is responsible for switching image stitching algorithms and identifying hydrates; and the file control area is responsible for saving and opening composite temperature cloud maps. The serial communication interface is divided into a serial port configuration area, a command sending area, and a PTZ control area. The serial port configuration area is responsible for configuring serial port parameters; the command sending area is responsible for sending and receiving commands; and the PTZ control area is responsible for controlling the camera PTZ's reset, left shift, right shift, rise, and fall. The host computer interface is shown below. Figure 10 As shown.

[0049] As an operational example, place the hydrate-containing core sample tube on the testing platform and click the "Start" button. The system attempts to establish communication with the visible light camera and thermal imager, displaying the communication status in the window. After successful communication, the visible light camera and thermal imager begin working, displaying images on the host computer. Click the "Detect Serial Port" button; the system automatically identifies the serial port, with a default baud rate of 9600 and hexadecimal format for transmission and reception. The serial port, baud rate, and hexadecimal base can also be manually selected. Click the "Open Serial Port" button; the host computer attempts to establish communication with the slave computer, displaying the communication status in the window. Once wireless communication is established, control of the slave computer's pan-tilt unit is achieved. After completing the startup phase, first click the "Reset" button. The slave computer controls the pan-tilt unit to move to the origin and calibrate the coordinates, completing the position calibration. Subsequently, the host computer controls the pan-tilt unit to move to the starting point of the core sample tube. The thermal imager acquires a thermal image of the current segment of the core sample tube. The pan-tilt unit is then moved to the next segment, and the thermal imager acquires another thermal image of that segment. This cycle continues until the thermal image of the entire core sample tube is acquired. During gimbal movement, the lower-level computer transmits the gimbal's coordinates to the upper-level computer in real time and displays them in the gimbal control area. Simultaneously, the window below the command sending area displays the data received in the serial port buffer in real time for motion analysis and debugging. Clicking the "Clear Buffer" button clears all received data. After acquiring the thermal image of the entire core sample tube, the controls in the image control area display the number of images captured, and the images can be switched in real time using the up and down toggle buttons. Clicking the "Stitch" button stitches all captured images into a single long image, which can be viewed using the slider at the bottom of the window. Clicking the "Hydrate Identification" button analyzes and identifies the captured images, determining the presence of natural gas hydrates within the sample tube. All hydrates are highlighted with blue lines, and the images are saved to a folder. Images can be viewed using the "Previous" and "Next" buttons. Each time the program runs, the system creates a new parent folder under the project path Photo in the format of "year-month-day-hour-minute-second". The parent folder contains three folders: "normal", "thermal", and "identify", which are used to store visible light images, thermal imager images, and hydrate analysis and identification images, respectively.

[0050] 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 only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model.

[0051] In this utility model, 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," "on top of," and "over" 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.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present 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.

[0053] The above embodiments are merely illustrative of the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made based on the substance of the content of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A natural gas hydrate infrared thermal imaging detection system, characterized in that, include: frame; The Y-axis motion structure includes a left half fixedly disposed on one side of the frame and a right half fixedly disposed on the other side of the frame. The X-axis motion structure has two ends respectively located in the left half and the right half; the left half and the right half are respectively provided with a power component for driving the X-axis motion structure to move along the Y-axis direction, and the X-axis motion structure is movably equipped with a camera pan-tilt unit and a power component for driving the camera pan-tilt unit to move along the X-axis direction.

2. The infrared thermal imaging detection system for natural gas hydrates according to claim 1, characterized in that, The frame comprises multiple aluminum profiles, which are interconnected to form the frame. Angle brackets are fixed at the right angles of the frame by connectors. The connectors include bolts and trapezoidal slider nuts that cooperate with each other. Rubber feet are provided at the bottom of the frame.

3. The infrared thermal imaging detection system for natural gas hydrates according to claim 1, characterized in that, The left half of the Y-axis motion structure includes: a second stepper motor, a stepper motor mounting plate, an optical axis locking ring, a coupling, a lead screw, a lead screw nut, a second connecting plate, an optical axis, a linear sliding flange bearing, and a horizontal optical axis support. The two optical axes are respectively fixed to the aluminum profile of the frame via the horizontal optical axis support. The second stepper motor and the stepper motor mounting plate are connected. The second stepper motor mounting plate is fixed to the optical axis via two sets of optical axis locking rings. The output shaft of the second stepper motor is connected to the lead screw via a coupling. The lead screw nut and the linear sliding flange bearing are fixed to the second connecting plate. The lead screw passes through the lead screw nut, and the optical axis passes through the linear sliding flange bearing.

4. The infrared thermal imaging detection system for natural gas hydrates according to claim 3, characterized in that, The left half of the Y-axis motion structure includes: a Y-axis limit switch connecting plate, a Y-axis limit switch, and a limit switch trigger. The Y-axis limit switch is fixed on the Y-axis limit switch connecting plate, which is fixed on an aluminum profile. The limit switch trigger is fixed on a linear sliding flange bearing.

5. The infrared thermal imaging detection system for natural gas hydrates according to claim 3, characterized in that, The right half of the Y-axis motion structure is symmetrical to the left half of the Y-axis motion structure.

6. The infrared thermal imaging detection system for natural gas hydrates according to claim 1, characterized in that, The X-axis motion structure includes: a first stepper motor, a first connecting plate, a driving synchronous pulley, a synchronous belt, a V-shaped slide rail, a synchronous belt fixing frame, pulleys, a sliding plate, a driven synchronous pulley, a driven synchronous pulley fixing shaft, and a third connecting plate. The first stepper motor is fixed to the first connecting plate, which is fixed to the V-shaped slide rail. The driving synchronous pulley is fixed to the output shaft of the first stepper motor. The driven synchronous pulley is mounted on the driven synchronous pulley fixing shaft, which is fixed between the third and fourth connecting plates. The synchronous belt passes over the driving and driven synchronous pulleys and is finally fixed to the synchronous belt fixing frame. The synchronous belt fixing frame is fixed to the sliding plate. Multiple sets of pulleys are installed on the sliding plate, clamping the V-shaped slide rail in the middle to drive the sliding plate to move along the X-axis.

7. The infrared thermal imaging detection system for natural gas hydrates according to claim 6, characterized in that, The X-axis motion structure includes an X-axis limit switch fixing plate and an X-axis limit switch, wherein the X-axis limit switch is fixed on the X-axis limit switch fixing plate, the X-axis limit switch fixing plate is fixed on a second connecting plate, and two sets of X-axis limit switches are provided.

8. The infrared thermal imaging detection system for natural gas hydrates according to claim 1, characterized in that, The camera gimbal includes: a gimbal connection plate, a thermal imager, a thermal imager mounting bracket, a visible light camera, and a visible light camera mounting bracket. The gimbal connection plate is fixed on a sliding plate, the thermal imager is fixed on the gimbal connection plate via the thermal imager mounting bracket, and the visible light camera is fixed on the gimbal connection plate via the visible light camera mounting bracket.

Images