Automatic sampling, weighing and transporting system for drilling cuttings

Abstract

The invention discloses an automatic drilling cutting sampling, weighing and transporting system which comprises a cover plate assembly, a drilling cutting image collecting device, a weighing device, a drilling cutting conveying device, a frame assembly, a slag conveying pipe and an orifice device. The drilling cuttings are collected by an orifice device mounted at an orifice and conveyed to a slag inlet in the cover plate assembly through a slag conveying pipe, and the drilling cuttings flow into a weighing device below to record the weight change information of the drilling cuttings; the drilling cutting image collecting device automatically collects drilling cutting samples through a mechanical arm and collects drilling cutting images through an image collector. A slag discharge port below the weighing device can be automatically opened to discharge the drilling cuttings into the drilling cutting conveying device below the slag discharge port; and the conveying device is used for remotely pumping the drilling cuttings to a specified position. According to the invention, collection, sampling, image acquisition, weighing and remote transportation of the drilling cuttings can be automatically completed, valuable drilling cuttings images and change information of the weight along with the drilling construction process can be obtained at the same time, data support is provided for stratum lithology analysis, and a foundation is laid for real realization of unmanned drilling construction.

Description

Technical Field

[0001] The invention belongs to the field of underground coal mine drilling construction automation and relates to an automatic sampling, weighing and transportation system for drill cuttings. Background Art

[0002] With the continuous development of drilling equipment and drilling construction technology, the automation level of underground coal mine drilling construction is constantly improving, and various automation functions such as automatic stabilization and angle adjustment, automatic hole positioning, automatic drilling construction, and automatic drill rod loading and unloading are being increasingly applied to underground coal mines. However, there is little research on the automatic collection and disposal technology of drill cuttings in the industry, which has become a problem that must be solved for the automation of the entire process of drilling construction.

[0003] In the existing technology, during the drilling construction, as the drill cuttings are continuously discharged from the borehole and accumulated around the borehole, the drillers must rely on manual bagging to transport them to the surrounding belt conveyor. The disposal of drill cuttings is one of the most labor-intensive operations during the drilling construction process. At the same time, the drill cuttings discharged from the hole are the main source of information for exploration drilling. During the geological exploration drilling construction, engineers judge the lithology of the construction stratum by observing the changes in the shape and color of the drill cuttings, and manually record the drilling depth at the intersection of coal and rock, and use the drilling trajectory re-measurement data to accurately calculate the position of the coal seam. When the pressure relief drilling is constructed to control rock burst, the quality of the drill cuttings discharged from the hole during the drilling construction is an important indicator for evaluating the control effect. During the exploration and waterproof drilling construction, the real-time quality data of the water return in the hole can help construction personnel determine the water content of the stratum and locate the water source. The existing technology relies on manual recording of these data, with a low degree of automation, and the accuracy is greatly affected by the workers' knowledge level and work status. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an automatic sampling, weighing and transportation system for drill cuttings to solve the problems of real-time acquisition of drill cuttings images and weight information and collection and remote transportation of drill cuttings.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve the above problems:

[0006] A drill cuttings automatic sampling, weighing and transportation system, comprising a cover plate assembly, a drill cuttings image acquisition device, a weighing device, a drill cuttings conveying device, a frame assembly, a slag conveying pipe, an orifice device, a flow meter, a pump station, a valve group and a core controller;

[0007] The cover plate assembly, the drill cuttings image acquisition device, the weighing device, and the drill cuttings conveying device are arranged in the frame assembly from top to bottom; the cover plate assembly includes a slag inlet and a cover plate; the drill cuttings image acquisition device includes an image collector, a frame, a driving oil cylinder, a sampling tray and a flipping device, a sampling robotic arm, a flipping trigger plate, and a scraper. The sampling tray can move between the drill cuttings collection point and the image acquisition point; the weighing device is suspended in the frame assembly by tensile and compressive sensors arranged around it, and it is provided with a slag discharge door; the drill cuttings conveying device can convey the drill cuttings discharged from the slag discharge door to a designated position; the hole opening device is arranged at the drill hole opening, one end of which is connected to the drill hole opening, and the other end is connected to the slag inlet on the cover plate assembly through a slag conveying pipe; the pump station provides energy for the whole system, and the valve group controls the actions of each actuator in the system under the control of the core controller; the flowmeter is installed in the drilling fluid pipeline to monitor the flow rate of the drilling fluid flowing into the drill hole interior.

[0008] The present invention further includes the following technical features:

[0009] Specifically, the cover plate is located at the top of the frame assembly, and the slag inlet is arranged on the cover plate.

[0010] Specifically, the image collector is installed at a corner of the frame. One end of the sampling robotic arm is arranged at another corner of the frame through a pin shaft. The other end of the sampling robotic arm is installed with the sampling tray and the flipping device. The driving oil cylinder is installed under the frame and connected to the sampling robotic arm to drive the sampling robotic arm to rotate horizontally around the pin shaft; when the driving oil cylinder is fully extended, the sampling robotic arm can rotate to make the sampling tray in the sampling tray and the flipping device located directly below the image collector; when the driving oil cylinder is fully retracted, the sampling tray can move directly below the slag inlet.

[0011] Specifically, the sampling tray and the flipping device include a sampling tray, a tray mounting bottom plate, a pin, a double torsion spring, a base I, a base II, a torsion spring, a flipping trigger rod, a cover plate II, and a cover plate I;

[0012] The sampling tray is disc-shaped and located at the hollow position of the tray mounting base plate. A baffle is welded to one end of the sampling tray, and the baffle contacts the tray mounting base plate. Shafts are respectively arranged on both sides of the sampling tray. The left shaft is installed between the base I and the cover plate I on the tray mounting base plate and can rotate around the inner hole between the two. The pin is fixed on the left shaft by a thread. A double torsion spring is installed between the base I, the cover plate I and the pin to provide a rotary reset force for the sampling tray. The right shaft is installed between the base II and the cover plate II on the tray mounting base plate and can rotate around the inner hole between the two. A quarter-circular boss is provided at the end of the right shaft. A flip trigger rod is installed at the end of the right shaft. The flip trigger rod is L-shaped and a semi-circular boss is machined at the corresponding end of the quarter-circular boss. The semi-circular boss and the quarter-circular boss are engaged, so that when the flip trigger rod rotates 90 degrees clockwise, the sampling tray will rotate together. A torsion spring is also fixed on the right shaft, and the elastic force of the torsion spring is less than that of the double torsion spring to provide a reset force for the flip trigger rod.

[0013] The flip trigger plate and the scraper are installed on the frame. The scraper can scrape the drill cuttings in the sampling tray flat after the drill cuttings collection of the sampling tray is completed. The flip trigger plate can, after the image sampling is completed, push the flip trigger rod to rotate 90 degrees clockwise to pour the drill cuttings in the sampling tray into the weighing device below.

[0014] Specifically, the weighing device includes a tension and compression sensor, a slag discharge driving oil cylinder, a slag discharge door and a box body. The bottom surface cross-section of the box body is trapezoidal, and slag discharge doors are respectively provided on the hypotenuses of the trapezoid. The slag discharge doors can be opened and closed under the drive of the slag discharge driving oil cylinder.

[0015] Specifically, the drill cuttings conveying device includes a welded box body, a water spray port, a plunger suction pump I, a plunger suction pump II, a switching oil cylinder, a stirring impeller, a hydraulic motor, a slag discharge manifold, a slag outlet, a double-port flange plate and a manifold flange;

[0016] The welded box body is an open-top container. One side of the container is in a slope shape, and two groups of water spray ports are provided at the top of the slope. The lower end of the slope is the slag storage area of the box body. Two groups of stirring impellers are respectively provided at both ends and can rotate under the drive of the hydraulic motor to stir the slag water evenly. A slag discharge manifold is provided in the middle of the slag storage area. The end of the slag discharge manifold is sealed with the double-port flange plate through the manifold flange and can switch the inner through hole between the plunger suction pump I and the plunger suction pump II under the drive of the switching oil cylinder. The other end of the manifold flange is provided with a slag outlet for connecting with the coal mine underground slag discharge pipeline.

[0017] Specifically, the orifice device includes an orifice pipe, a slag collection device, a gas drainage port, and an orifice slag discharge port; the orifice pipe is located at the front end of the device, is tubular, has an outer diameter slightly smaller than the borehole diameter, and an inner diameter slightly larger than the outer diameter of the drill bit; the slag collection device is connected to the end of the orifice pipe through a flange; a gas drainage port is provided at the top of the slag collection device and is connected to the underground negative pressure drainage pipe through a pipeline during construction; an orifice slag discharge port is provided at the bottom of the slag collection device and is connected to the slag inlet on the cover plate assembly through a slag discharge pipe; the end of the slag collection device is sealed with the outer end of the drill pipe through a rubber cup to prevent gas leakage.

[0018] The working method of the drill cuttings automatic sampling, weighing, and transportation system includes the following steps:

[0019] Before borehole construction, the orifice device is installed at the outer end of the borehole, the orifice pipe is inserted into the hole, and is sealed with the borehole annulus through a sealing material; the drill cuttings flow into the slag collection device through the annulus space between the drill pipe and the orifice pipe; the gas gushing out of the hole enters the gas drainage pipeline in the coal mine through the gas drainage port; the drilling fluid mixed with the drill cuttings passes through the slag discharge port at the bottom, flows through the slag discharge pipe and the cover plate assembly into the weighing device; four tension and compression sensors are responsible for recording the weight change of the drill cuttings mixed solution in the recording box, and subtracting the weight of the drilling fluid flowing into the borehole recorded by the flowmeter from the measured weight is the weight of the drill cuttings discharged from the hole; when the weight exceeds the set value, the slag discharge driving oil cylinder opens the slag discharge door at the bottom of the box under the control of the core controller; the drill cuttings solution flows into the lower drill cuttings conveying device through the slag discharge port; under the scouring of the water curtain sprayed from the water spray port, the drill cuttings flow into the slag storage area, are stirred evenly by the stirring impellers on both sides, and then through the coordinated actions of the plunger suction pump I, the plunger suction pump II, the slag discharge manifold, and the switching oil cylinder, the drill cuttings solution is transported to the designated position through the slag discharge port.

[0020] Specifically, when transporting drill cuttings, the two groups of plunger suction pumps work in coordination, and the slag discharge manifold is communicated with one of the cavities of the double-port flange plate through the manifold flange at the end; when the oil cylinder of the plunger suction pump I retracts, the oil cylinder of the plunger suction pump II extends, and at this time the drill cuttings are sucked into the cavity of the plunger suction pump I, and the drill cuttings in the plunger suction pump II are pumped out through the slag discharge manifold; after both suction pumps complete the action, under the action of the switching oil cylinder, the cavity belonging to the plunger suction pump I on the double-port flange plate is communicated; then, the oil cylinder of the plunger suction pump I extends, and the oil cylinder of the plunger suction pump II retracts; the drill cuttings in the welding box are sucked into the retracted cavity of the oil cylinder of the plunger suction pump II; the drill cuttings in the plunger suction pump I are pumped out through the slag discharge manifold; cycling this action can transport all the drill cuttings solution in the welding box to the designated position.

[0021] Specifically, when it is necessary to sample the drill cuttings, control the drive cylinder of the sampling robotic arm to slowly retract, and send the sampling tray and the flipping device to the sampling position; during this period, the pressure sensor in the valve group monitors the pressure change of the drive cylinder. When the pressure reaches 20 MPa, the system will consider that the drive cylinder is in the target position; before reaching the target position, under the action of the flipping device, the sampling tray flips, and the drill cuttings in the sampling tray are poured into the weighing device; then there is a continuous sampling time of five minutes; after the sampling is completed, control the drive cylinder of the sampling robotic arm to slowly extend, and move the sampling tray to the image capture position; during this process, the drill cuttings in the sampling tray will be scraped flat by the scraper to keep the surface of the sample flat and regular, and ensure a constant distance between the drill cuttings sample and the image collector; the condition for determining that the sampling robotic arm has reached the image capture position is the same as that of the sampling position; the image collector starts to capture the drill cuttings image, and then numbers the drill cuttings image according to the time and the drilling depth information; the image is transmitted and stored in the core controller.

[0022] Compared with the prior art, the present invention has the following technical effects:

[0023] The present invention can be quickly integrated with an intelligent drill rig and automatically obtain multi-source information related to drill cuttings: The system can be quickly integrated into the intelligent drill rig system. The controller of the intelligent drill rig can be used as the controller of the system, and the original solenoid valve on the drill rig can be used as the control valve of the system. In addition, under the command of the core controller, the system can work in coordination with the drill rig to automatically complete the collection, automatic sampling, image collection, weighing and long-distance transportation of drill cuttings during the drilling construction process. While realizing the automation of drill cuttings disposal, it realizes the automation of obtaining multi-source information such as the drill cuttings image and weight in the drilling trajectory direction during drilling construction.

[0024] The present invention has a constant drill cuttings image acquisition environment: The environment in coal mines is harsh, and water mist, dust and darkness will affect the quality of the collected drill cuttings images. To ensure the consistency of the imaging environment, the present invention has developed an image collector that creates a relatively enclosed environment between the intrinsically safe camera and the sampling tray and provides independent lighting to eliminate the influence of the surrounding environment on image acquisition. In addition, the intrinsically safe camera uses the same shooting parameters for each shot, such as the shooting environment, shooting angle, camera settings and exposure time, etc., further ensuring the consistency of the drill cuttings image sampling environment.

[0025] The present invention can ensure a unified sample collection process and sampling timing: During the drilling construction process, the drill cuttings samples are fluid and changing, and the drilling rig does not stop working when collecting samples. When collecting samples multiple times, the differences in the collection process and the time-consuming of each sample collection will seriously affect the sample collection accuracy and cause the inability to correspond one-to-one between the collected samples and the sample collection positions. To solve this problem, the core controller of the system will maintain data interaction with the drilling rig controller, and the drilling rig controller will uniformly trigger the sampling instruction. After receiving the sampling instruction, the system sampling robotic arm will successively go through the processes of tray emptying, drill cuttings collection, leveling, and image collection. The sampling time-consuming and the sampling process are strictly unified, further reducing the impact of the sampling link on the accuracy of drill cuttings image collection and ensuring the one-to-one correspondence between the sampling position and the collected sample.

[0026] The present invention can implement the drill cuttings anti-mixing technology: To prevent the mixing of drill cuttings in the sampling tray and affect the image collection accuracy. Before the sampling robotic arm reaches the drill cuttings collection position each time, the sampling tray will dump the drill cuttings in the tray into the weighing device below under the action of the flipping device. When the sampling tray finishes collecting drill cuttings and needs to move to the image collection position, it will pass through the scraper and the flipping trigger plate successively. The scraper levels the drill cuttings in the tray, and the flipping trigger plate only contacts the flipping trigger rod and pushes the flipping trigger rod to rotate counterclockwise by 90 degrees. At this time, the sampling tray will not rotate together. When the flipping trigger rod passes through the flipping trigger plate, under the action of the restoring force of the torsion spring, the L end of the L-shaped flipping trigger rod returns to the vertical state, and the robotic arm sends the collected drill cuttings to the image sampling position. After completing the image sampling, when the tray needs to move to the drill cuttings sampling position, it will pass through the flipping trigger plate and the scraper in sequence. The flipping trigger plate will contact the flipping trigger rod and push the flipping trigger rod to rotate clockwise by 90 degrees. At this time, the sampling tray will rotate together and dump the drill cuttings in the tray into the weighing device below. When the flipping trigger rod passes through the flipping trigger plate, under the action of the restoring force of the torsion spring, the L end of the L-shaped flipping trigger rod returns to the vertical state, and the robotic arm sends the sampling tray to the drill cuttings collection position. Before each sampling, the sampling tray and the flipping device will empty the original drill cuttings in the sampling tray, preventing the mixing of drill cuttings from different strata in the sampling link and affecting the accuracy of drill cuttings sample collection. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of the drill cuttings automatic sampling, weighing, and transportation system of the present invention.

[0028] Figure 2 is an axonometric view of the drill cuttings image automatic collection device.

[0029] Figure 3 is a front view of the drill cuttings image automatic collection device.

[0030] Figure 4 is the drill cuttings image collector.

[0031] Figure 5 It is a schematic structural diagram of a sampling tray and a turning device.

[0032] Figure 6 It is an exploded view of a sampling tray and a turning device.

[0033] Figure 7 It is the drill cuttings collection process.

[0034] Figure 8 It is a schematic structural diagram of a weighing device.

[0035] Figure 9 It is a schematic structural diagram of a drill cuttings conveying device.

[0036] Figure 10 It is a schematic structural diagram of a pumping device.

[0037] Figure 11 It is a schematic structural diagram of an orifice device.

[0038] The meanings of each label in the figure are as follows:

[0039] 1 - Cover assembly, 1.1 - Slag inlet, 1.2 - Cover;

[0040] 2 - Drill cuttings image acquisition device, 2.1 - Image acquirer, 2.1.1 - Intrinsically safe camera, 2.1.2 - Mounting flange, 2.1.3 - LED light source, 2.1.4 - Light guide plate, 2.1.5 - Light homogenizing plate, 2.2 - Turning trigger plate, 2.3 - Scraper, 2.4 - Frame, 2.5 - Driving oil cylinder, 2.6 - Sampling tray and turning device, 2.6.1 - Pin, 2.6.2 - Double torsion spring, 2.6.3 - Base I, 2.6.4 - Sampling tray, 2.6.5 - Base II, 2.6.6 - Torsion spring, 2.6.7 - Turning trigger rod, 2.6.8 - Cover II, 2.6.9 - Cover I, 2.7 - Sampling robotic arm;

[0041] 3 - Weighing device, 3.1 - Tensile and compressive force sensor, 3.2 - Slag discharge driving oil cylinder, 3.3 - Slag discharge door, 3.4 - Box body;

[0042] 4 - Drill cuttings conveying device, 4.1 - Welded box body, 4.2 - Water spraying port, 4.3 - Plunger suction pump I, 4.4 - Plunger suction pump II, 4.5 - Switching oil cylinder, 4.6 - Stirring impeller, 4.7 - Hydraulic motor, 4.8 - Slag discharge manifold, 4.9 - Slag outlet, 4.10 - Double - port flange plate, 4.11 - Manifold flange;

[0043] 5 - Frame assembly;

[0044] 7. Orifice device, 7.1 - Orifice pipe, 7.2 - Slag collection device, 7.3 - Gas drainage port, 7.4 - Orifice slag discharge port. Detailed implementation

[0045] In view of the deficiencies in the prior art, based on the comprehensive experience and achievements in the relevant profession over a long time, through painstaking research and design, the present invention has developed an automatic drill cuttings sampling, weighing and transportation system. This system can complete the collection and long-distance transportation of drill cuttings, and at the same time can automatically record the change information of the weight of the returned slag in the borehole during the borehole construction process, and can also automatically complete the drill cuttings sampling and the acquisition of drill cuttings images according to the program settings in cooperation with an intelligent drill rig. The successful development of this system provides data support for the real-time identification of formation lithology information and the evaluation of disaster control effects during the borehole construction process, and also provides equipment support for the automation of the entire borehole construction process.

[0046] The automatic drill cuttings sampling, weighing and transportation system of the present invention includes a cover plate assembly, an image acquisition device, a weighing device, a drill cuttings transportation device, a frame assembly, a slag discharge pipe and an orifice device. This system can automatically complete the functions of drill cuttings collection, sampling, image acquisition, weighing and remote transportation during the borehole construction process.

[0047] This system collects drill cuttings through the orifice device installed at the orifice, transports the drill cuttings through the slag discharge pipe to the slag inlet on the cover plate assembly, and flows into the weighing device below. A tension and compression sensor is arranged on the weighing device to record the change information of the drill cuttings weight. A drill cuttings image acquisition device is arranged between the weighing device and the cover plate assembly, which can automatically collect drill cuttings samples through a robotic arm and collect drill cuttings images through an image collector. After the drill cuttings in the weighing device reach a certain weight, the slag discharge port below the device will automatically open to discharge the drill cuttings into the drill cuttings transportation device below. The transportation device is responsible for remotely pumping the drill cuttings to a designated location. This system can automatically complete the collection and disposal of drill cuttings, and at the same time obtain valuable drill cuttings images and the change information of the weight during the borehole construction process, providing data support for formation lithology analysis and laying a foundation for the true realization of unmanned borehole construction.

[0048] The following gives specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent transformations made on the basis of the technical solutions of this application fall within the protection scope of the present invention.

[0049] Embodiment 1:

[0050] As Figures 1 to 10 shown, this embodiment provides an automatic drill cuttings sampling, weighing and transportation system, including a cover plate assembly 1, a drill cuttings image acquisition device 2, a weighing device 3, a drill cuttings transportation device 4, a frame assembly 5, a slag discharge pipe, an orifice device 7, a flowmeter, a pumping station, a valve group and a core controller.

[0051] The cover plate assembly 1, the drill cuttings image acquisition device 2, the weighing device 3, and the drill cuttings conveying device 4 are arranged in the frame assembly 5 from top to bottom; the cover plate assembly 1 includes a slag inlet 1.1 and a cover plate 1.2; the drill cuttings image acquisition device 2 includes an image collector 2.1, a frame 2.4, a driving oil cylinder 2.5, a sampling tray and a flipping device 2.6, a sampling robotic arm 2.7, a flipping trigger plate 2.2, and a scraper 2.3. The sampling tray 2.6.4 can move between the drill cuttings collection point and the image acquisition point; the weighing device 3 is suspended from the frame assembly 5 by the tensile and compressive sensors 3.1 arranged around it, and it is provided with a slag discharge door 3.3; the drill cuttings conveying device 4 can convey the drill cuttings discharged from the slag discharge door 3.3 to a designated position; the orifice device 7 is arranged at the drill hole opening, one end of which is connected to the drill hole opening, and the other end is connected to the slag inlet 1.1 on the cover plate assembly 1 through a slag conveying pipe; the pump station provides energy for the whole system, and the valve group controls the actions of each actuator in the system under the control of the core controller; the flowmeter is installed in the drilling fluid pipeline to monitor the flow rate of the drilling fluid flowing into the drill hole interior.

[0052] The cover plate 1.2 is located at the top of the frame assembly 5, and the slag inlet 1.1 is arranged on the cover plate 1.2. In the present invention, the frame assembly 5 is of a cuboid frame 2.4 structure.

[0053] The image collector 2.1 is installed at a corner of the frame 2.4. One end of the sampling robotic arm 2.7 is arranged at another corner of the frame 2.4 through a pin shaft. The other end of the sampling robotic arm 2.7 is installed with the sampling tray and the flipping device 2.6. The driving oil cylinder 2.5 is installed under the frame 2.4 and connected to the sampling robotic arm 2.7 to drive the sampling robotic arm 2.7 to rotate horizontally around the pin shaft; when the driving oil cylinder 2.5 is fully extended, the sampling robotic arm 2.7 can rotate to make the sampling tray 2.6.4 in the sampling tray and the flipping device 2.6 located directly below the image collector 2.1; when the driving oil cylinder 2.5 is fully retracted, the sampling tray 2.6.4 can move directly below the slag inlet 1.1; realizing the movement of the sampling tray 2.6.4 between the drill cuttings collection point and the image acquisition point. The image collector 2.1 adopts an intrinsically safe design to meet the requirements for use in coal mines.

[0054] The image collector 2.1 of the present invention includes an intrinsically safe camera 2.1.1, a mounting flange 2.1.2, an LED light source 2.1.3, a light guide plate 2.1.4, and a light homogenizing plate 2.1.5; the image collector 2.1 creates a relatively enclosed environment between the intrinsically safe camera 2.1.1 and the sampling tray and provides independent illumination to eliminate the influence of the surrounding environment on image acquisition. In addition, the intrinsically safe camera 2.1.1 uses the same shooting parameters for each shot, such as shooting environment, shooting angle, camera settings, and exposure time, etc., further ensuring the consistency of the drill cuttings image sampling environment.

[0055] Sampling tray and flipping device 2.6 includes a sampling tray 2.6.4, a tray mounting base plate, a pin 2.6.1, a double torsion spring 2.6.2, a base I 2.6.3, a base II 2.6.5, a torsion spring 2.6.6, a flipping trigger lever 2.6.7, a cover plate II 2.6.8, and a cover plate I 2.6.9; the sampling tray 2.6.4 is disc-shaped and located at the hollow position of the tray mounting base plate. A baffle is welded to one end of the sampling tray 2.6.4, and the baffle contacts the tray mounting base plate, so that the tray can only flip to the side without the baffle; shafts are respectively provided on both sides of the sampling tray 2.6.4. The left shaft is installed between the base I 2.6.3 and the cover plate I 2.6.9 on the tray mounting base plate and can rotate around the inner hole between the two. The pin 2.6.1 is fixed on the left shaft by a thread. A double torsion spring 2.6.2 is installed between the base I 2.6.3, the cover plate I 2.6.9, and the pin 2.6.1 to provide a rotational reset force for the sampling tray 2.6.4; the right shaft is installed between the base II 2.6.5 and the cover plate II 2.6.8 on the tray mounting base plate and can rotate around the inner hole between the two. A quarter-circular boss is provided at the end of the right shaft; the flipping trigger lever 2.6.7 is installed at the end of the right shaft. The flipping trigger lever 2.6.7 is L-shaped and a semi-circular boss is machined at the corresponding end of the quarter-circular boss; the semi-circular boss on the flipping trigger lever 2.6.7 meshes with the quarter-circular boss at the end of the right shaft, so that when the flipping trigger lever 2.6.7 rotates 90 degrees clockwise, the sampling tray 2.6.4 will rotate together; when the flipping trigger lever 2.6.7 rotates 90 degrees counterclockwise, the sampling tray 2.6.4 will not rotate together; a torsion spring 2.6.6 is also fixed on the right shaft. The elastic force of the torsion spring 2.6.6 is less than the elastic force of the double torsion spring 2.6.2 to provide a reset force for the flipping trigger lever 2.6.7, so that the L end of the L-shaped flipping trigger lever 2.6.7 is in a vertical state at the initial position, and at the same time, the semi-circular boss contacts the quarter-circular boss.

[0056] A flipping trigger plate 2.2 and a scraper 2.3 are respectively arranged on the movement track of the sampling tray and flipping device 2.6; the flipping trigger plate 2.2 and the scraper 2.3 are installed on the frame 2.4; the scraper 2.3 can scrape the drill cuttings in the sampling tray 2.6.4 flat after the drill cuttings collection of the sampling tray 2.6.4 is completed; the flipping trigger plate 2.2 can, after the image sampling is completed, push the flipping trigger lever 2.6.7 to rotate 90 degrees clockwise to pour the drill cuttings in the sampling tray 2.6.4 into the weighing device 3 below.

[0057] As Figure 7As shown in the figure, when the sampling tray 2.6.4 finishes collecting drill cuttings and needs to be moved to the image acquisition position, it will pass through the scraper 2.3 and the flipping trigger plate 2.2 successively; the scraper 2.3 levels the drill cuttings in the tray; the flipping trigger plate 2.2 only contacts the flipping trigger rod 2.6.7 and pushes the flipping trigger rod 2.6.7 to rotate counterclockwise by 90 degrees. At this time, the sampling tray 2.6.4 will not rotate together; when the flipping trigger rod 2.6.7 passes through the flipping trigger plate 2.2, under the action of the restoring force of the torsion spring 2.6.6, the L end of the L-shaped flipping trigger rod 2.6.7 returns to the vertical state; the robotic arm sends the collected drill cuttings to the image sampling position.

[0058] After completing the image sampling, when the sampling tray 2.6.4 needs to be moved to the drill cutting sampling position, it will pass through the flipping trigger plate 2.2 and the scraper 2.3 in sequence; the flipping trigger plate 2.2 will contact the flipping trigger rod 2.6.7 and push the flipping trigger rod 2.6.7 to rotate clockwise by 90 degrees; at this time, the sampling tray 2.6.4 will rotate together and pour the drill cuttings in the tray into the weighing device 3 below; when the flipping trigger rod 2.6.7 passes through the flipping trigger plate 2.2, under the action of the restoring force of the torsion spring 2.6.6, the L end of the L-shaped flipping trigger rod 2.6.7 returns to the vertical state; the robotic arm sends the sampling tray 2.6.4 to the drill cutting collection position.

[0059] Before each sampling, the sampling tray and the flipping device 2.6 will empty the original drill cuttings in the sampling tray 2.6.4, preventing the mixing of drill cuttings from different strata during the sampling process and affecting the sampling accuracy of drill cutting samples.

[0060] The weighing device 3 includes a tension and compression sensor 3.1, a slag discharge driving oil cylinder 3.2, a slag discharge door 3.3, and a box body 3.4; the bottom surface cross-section of the box body 3.4 is trapezoidal, and the inclined sides of the trapezoid are respectively provided with slag discharge doors 3.3, and the slag discharge doors 3.3 can be opened and closed under the drive of the slag discharge driving oil cylinder 3.2.

[0061] The drill cutting conveying device 4 includes a welded box body 4.1, a water spray port 4.2, a plunger type suction pump I, a plunger suction pump II 4.4, a switching oil cylinder 4.5, a stirring impeller 4.6, a hydraulic motor 4.7, a slag discharge manifold 4.8, a slag outlet 4.9, a double-port flange plate 4.10, and a manifold flange 4.11.

[0062] The welding box body 4.1 is an open-top container. One side of the container is sloped, and two groups of water spray nozzles 4.2 are provided at the top of the slope; the lower end of the slope is the main slag storage area of the box body 3.4, and two groups of stirring impellers 4.6 are respectively provided at both ends, which can rotate under the drive of the hydraulic motor 4.7 to stir the slag water evenly; a slag discharge manifold 4.8 is provided in the middle of the slag storage area; the end of the slag discharge manifold 4.8 is sealed with a double-port flange plate 4.10 through a manifold flange 4.11, and the inner through hole can be switched between the plunger suction pump I 4.3 and the plunger suction pump II 4.4 under the drive of the switching oil cylinder 4.5; another end of the manifold flange 4.11 is provided with a slag outlet 4.9 for connecting with the slag discharge pipeline underground in the coal mine.

[0063] The orifice device 7 includes an orifice pipe 7.1, a slag collection device 7.2, a gas drainage port 7.3 and an orifice slag outlet 7.4; the orifice pipe 7.1 is located at the front end of the device, is tubular, the outer diameter is slightly smaller than the drilling diameter, and the inner diameter is slightly larger than the outer diameter of the drill bit; the slag collection device 7.2 is connected to the end of the orifice pipe 7.1 through a flange; a gas drainage port 7.3 is arranged at the top of the slag collection device 7.2, and is connected to the underground negative pressure drainage pipe through a pipeline during construction; a slag outlet 7.4 is arranged at the bottom of the slag collection device 7.2 and is connected to the slag inlet 1.1 on the cover plate assembly 1 through a slag conveying pipe; the end of the slag collection device 7.2 is sealed with the outer end of the drill pipe through a rubber cup to prevent gas leakage.

[0064] The present invention also provides a working method for an automatic sampling, weighing and transporting system for drill cuttings, including: before drilling construction, the orifice device is installed at the outer end of the drill hole, the orifice pipe is inserted into the hole, and is sealed with the annular space of the drill hole through a hole-sealing material; the drill cuttings can flow into the slag collection device through the annular space between the drill pipe and the orifice pipe; the gas gushing out of the hole enters the gas drainage pipeline underground in the coal mine through the gas drainage port; the drilling fluid mixed with the drill cuttings passes through the bottom slag outlet, flows through the slag conveying pipe and the cover plate assembly into the weighing device; four tension and compression sensors are responsible for recording the weight change of the drill cuttings mixed solution in the box body, and subtracting the weight of the drilling fluid flowing into the drill hole recorded by the flowmeter from the measured weight is the weight of the drill cuttings discharged from the hole; when the weight exceeds the set value, the slag discharge driving oil cylinder opens the slag discharge door at the bottom of the box body under the control of the core controller; the drill cuttings solution flows into the lower drill cuttings conveying device through the slag discharge port; under the scouring of the water curtain sprayed by the water spray nozzles, the drill cuttings flow into the slag storage area, are evenly stirred by the stirring impellers on both sides, and then through the coordinated actions of the plunger suction pump I, the plunger suction pump II, the slag discharge manifold and the switching oil cylinder, the drill cuttings solution is conveyed to a designated position through the slag outlet.

[0065] When transporting drill cuttings, the working principle of the plunger suction pump is as follows. Two groups of plunger suction pumps work in coordination. The slag discharge manifold is connected to one of the cavities of the double-port flange plate through the manifold flange at the end. When the cylinder of plunger suction pump I retracts, the cylinder of plunger suction pump II extends. At this time, the drill cuttings are sucked into the cavity of plunger suction pump I, and the drill cuttings in plunger suction pump II are pumped out through the slag discharge manifold. After both suction pumps complete their actions, under the action of the switching cylinder, the manifold flange connects to the cavity belonging to plunger suction pump I on the double-port flange plate. Then, the cylinder of plunger suction pump I extends, and the cylinder of plunger suction pump II retracts. The drill cuttings in the welding box are sucked into the retracted cavity of the cylinder of plunger suction pump II, and the drill cuttings in plunger suction pump I are pumped out through the slag discharge manifold. Repeating this action can transport all the drill cutting solution in the welding box to the designated position.

[0066] When it is necessary to sample the drill cuttings, the hydraulic system controls the driving cylinder of the sampling robotic arm to slowly retract, sending the sampling tray and the flipping device to the sampling position. During this period, the pressure sensor in the valve group monitors the pressure change of the driving cylinder. When the pressure reaches 20 MPa, the system will consider that the driving cylinder is at the target position. Before reaching the target position, under the action of the flipping device, the sampling tray flips, pouring the drill cuttings in the sampling tray into the weighing device. Subsequently, there is a continuous sampling time of five minutes. After the sampling is completed, the hydraulic system controls the driving cylinder of the sampling robotic arm to slowly extend, moving the sampling tray to the image capture position. During this process, the drill cuttings in the sampling tray will be leveled by the scraper to keep the surface of the sample flat and regular, and ensure a constant distance between the drill cutting sample and the image collector. The condition for determining that the sampling robotic arm has reached the image capture position is the same as that for the sampling position. The image collector starts to capture the drill cutting image, and then numbers the drill cutting image according to the time and drilling depth information. The image is transmitted and stored in the core controller.

[0067] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0068] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable way without contradiction. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0069] Furthermore, any combination can be made between various different embodiments of the present invention as long as it does not violate the idea of the present invention, and it should also be regarded as the content disclosed by the present invention.

Claims

1. A drill cuttings automatic sampling, weighing and transportation system, characterized in that: It comprises a cover plate assembly (1), a drill cuttings image acquisition device (2), a weighing device (3), a drill cuttings conveying device (4), a frame assembly (5), a slag conveying pipe, an orifice device (7), a flow meter, a pump station, a valve group and a core controller; The cover plate assembly (1), the drill cuttings image acquisition device (2), the weighing device (3) and the drill cuttings conveying device (4) are arranged in a frame assembly (5) from top to bottom; the cover plate assembly (1) comprises a slag inlet (1.1) and a cover plate (1.2); the drill cuttings image acquisition device (2) comprises an image collector (2.1), a frame (2.4), a driving cylinder (2.5), a sampling tray and a flipping device (2.6), a sampling mechanical arm (2.7), a flip trigger plate (2.2), and a scraper (2.3); the sampling tray (2.6.4) can move between a drill cuttings collection point and an image collection point; the weighing device (3) and the scraper (2.3) are arranged in a frame assembly (5) from top to bottom; the cover plate assembly (1) comprises a slag inlet (1.1) and a cover plate (1.2); the drill cuttings image acquisition device (2) comprises an image collector (2.1), a frame (2.4), a driving cylinder (2.5), a sampling tray and a flipping device (2.6), a sampling mechanical arm (2.7), a flip trigger plate (2.2), and a scraper (2.3); and the sampling tray (2.6.4) can move between a drill cuttings collection point and an image collection point; The weight device (3) is suspended on the frame assembly (5) through tension and pressure sensors (3.1) arranged around it, and is provided with a slag discharge door (3.3); the drill cuttings conveying device (4) can convey the drill cuttings discharged by the slag discharge door (3.3) to a designated location; the orifice device (7) is arranged at the borehole mouth, one end of which is connected to the borehole mouth, and the other end is connected to the slag inlet (1.1) on the cover plate assembly (1) through a slag conveying pipe; the pump station provides energy for the entire system, and the valve group controls the action of each actuator in the system under the control of the core controller; the flow meter is installed in the drilling fluid pipeline to monitor the flow of drilling fluid flowing into the borehole.

2. The automatic sampling, weighing and transportation system for drill cuttings according to claim 1, characterized in that: The cover plate (1.2) is located on the top of the frame assembly (5), and the slag inlet (1.1) is arranged on the cover plate (1.2).

3. The automatic sampling, weighing and transportation system for drill cuttings according to claim 1, characterized in that: The image collector (2.1) is installed at one corner of the frame (2.4); one end of the sampling mechanical arm (2.7) is arranged at the other corner of the frame (2.4) through a pin shaft; the other end of the sampling mechanical arm (2.7) is installed with a sampling tray and a turning device (2.6); the driving cylinder (2.5) is installed under the frame (2.4) and connected to the sampling mechanical arm (2.7) to drive the sampling mechanical arm (2.7) to rotate horizontally around the pin shaft; when the driving cylinder (2.5) is fully extended, the sampling mechanical arm (2.7) can be rotated so that the sampling tray and the sampling tray (2.6.4) in the turning device (2.6) are located directly below the image collector (2.1); when the driving cylinder (2.5) is fully retracted, the sampling tray (2.6.4) can be moved to directly below the slag inlet (1.1).

4. The automatic sampling, weighing and transportation system for drill cuttings according to claim 1, characterized in that: The sampling tray and flipping device (2.6) comprises a sampling tray (2.6.4), a tray mounting base, a pin (2.6.1), a double torsion spring (2.6.2), a base I (2.6.3), a base II (2.6.5), a torsion spring (2.6.6), a flip trigger lever (2.6.7), a cover II (2.6.8) and a cover I (2.6.9); The sampling tray (2.6.4) is disc-shaped and is located at a hollow position of the tray mounting base plate. A baffle is welded at one end of the sampling tray (2.6.4), and the baffle is in contact with the tray mounting base plate. Shafts are respectively provided on both sides of the sampling tray (2.6.4). The left shaft is installed between the base I (2.6.3) and the cover I (2.6.9) on the tray mounting base plate and can rotate around the inner hole between the two. The pin (2.6.1) is fixed on the left shaft by a thread. A double torsion spring (2.6.2) is installed between the base I (2.6.3), the cover I (2.6.9) and the pin (2.6.1) to provide a rotational reset force for the sampling tray (2.6.4). The right shaft is installed between the base II (2.6.5) and the cover II (2.6.8) on the tray installation bottom plate and can rotate around the inner hole between the two. A quarter-circular boss is provided at the end of the right shaft. A flip trigger rod (2.6.7) is installed at the end of the right shaft. The flip trigger rod (2.6.7) is L-shaped and has a semicircular boss processed at the end corresponding to the quarter-circular boss. The semicircular boss and the quarter-circular boss are meshed, so that when the flip trigger rod (2.6.7) rotates 90 degrees clockwise, the sampling tray (2.6.4) will rotate together. A torsion spring (2.6.6) is also fixed on the right shaft. The elastic force of the torsion spring (2.6.6) is less than the elastic force of the double torsion spring (2.6.2) to provide a reset force for the flip trigger rod (2.6.7). The flip trigger plate (2.2) and the scraper (2.3) are mounted on the frame (2.4); the scraper (2.3) can scrape the drill cuttings in the sampling tray (2.6.4) flat after the sampling tray (2.6.4) completes the collection of drill cuttings; the flip trigger plate (2.2) can push the flip trigger rod (2.6.7) to rotate 90 degrees clockwise after completing the image sampling, so as to dump the drill cuttings in the sampling tray (2.6.4) into the weighing device (3) below.

5. The automatic sampling, weighing and transportation system for drill cuttings according to claim 1, characterized in that: The weighing device (3) comprises a tension and pressure sensor (3.1), a slag discharge driving cylinder (3.2), a slag discharge door (3.3) and a box body (3.4); the bottom surface cross-section of the box body (3.4) is trapezoidal, and the slag discharge doors (3.3) are respectively arranged on the oblique sides of the trapezoid. The slag discharge doors (3.3) can be opened and closed under the drive of the slag discharge driving cylinder (3.2).

6. The automatic sampling, weighing and transportation system for drill cuttings according to claim 1, characterized in that: The drilling cuttings conveying device (4) comprises a welded box body (4.1), a water spray port (4.2), a plunger suction pump I, a plunger suction pump II (4.4), a switching oil cylinder (4.5), a stirring impeller (4.6), a hydraulic motor (4.7), a slag discharge manifold (4.8), a slag discharge port (4.9), a double-port flange plate (4.10) and a manifold flange (4.11); The welded box body (4.1) is a container with an upper opening, one side of the container is in a slope shape, and two groups of water spray ports (4.2) are arranged at the top of the slope; the lower end of the slope is the slag storage area of ​​the box body (3.4), and two groups of stirring impellers (4.6) are respectively arranged at both ends, which can rotate under the drive of a hydraulic motor (4.7) to stir the slag water; a slag discharge manifold (4.8) is arranged in the middle of the slag storage area; the end of the slag discharge manifold (4.8) is sealed with a double-port flange plate (4.10) through a manifold flange (4.11), and the inner through hole can be switched between a plunger suction pump I (4.3) and a plunger suction pump II (4.4) under the drive of a switching cylinder (4.5); a slag discharge port (4.9) is arranged at the other end of the manifold flange (4.11) for connecting to a slag discharge pipeline in a coal mine.

7. The automatic sampling, weighing and transportation system for drill cuttings according to claim 1, characterized in that: The orifice device (7) comprises an orifice pipe (7.1), a slag collecting device (7.2), a gas extraction port (7.3) and an orifice slag outlet (7.4); the orifice pipe (7.1) is located at the front end of the device and is tubular, with an outer diameter slightly smaller than the borehole diameter and an inner diameter slightly larger than the outer diameter of the drill bit; the slag collecting device (7.2) is connected to the end of the orifice pipe (7.1) via a flange; a gas extraction port (7.3) is provided at the top of the slag collecting device (7.2), which is connected to an underground negative pressure extraction pipe via a pipeline during construction; a orifice slag outlet (7.4) is provided at the bottom of the slag collecting device (7.2), which is connected to a slag inlet (1.1) on the cover plate assembly (1) via a slag conveying pipe; the end of the slag collecting device (7.2) is sealed to the outer end of the drill pipe via a rubber cup to prevent gas leakage.

8. The working method of the automatic sampling, weighing and transportation system for drill cuttings according to any one of claims 1 to 7, characterized in that: The following steps are involved: Before drilling construction, the orifice device is installed at the outer end of the borehole, the orifice pipe is inserted into the hole and sealed with the borehole annulus by the sealing material; the drill cuttings flow into the slag collecting device through the annular space between the drill rod and the orifice pipe; the gas gushing out of the hole enters the gas extraction pipeline underground in the coal mine through the gas extraction port; the drilling fluid mixed with the drill cuttings flows through the slag outlet at the bottom, and flows into the weighing device through the slag conveying pipe and the cover plate assembly; the four tension and pressure sensors are responsible for recording the weight change of the drill cuttings mixed solution in the recording box, and the measured weight is subtracted from the flow meter The recorded weight of the drilling fluid flowing into the borehole is the weight of the drill cuttings discharged from the hole; when the weight exceeds the set value, the slag discharge drive cylinder opens the slag discharge door at the bottom of the box under the control of the core controller; the drill cuttings solution flows into the drill cuttings conveying device below through the slag discharge port; under the flushing of the water curtain sprayed from the water spray port, the drill cuttings flow into the slag storage area, and after being stirred evenly by the stirring impellers on both sides, the drill cuttings solution is transported to the designated position through the slag discharge port under the coordinated action of the plunger suction pump I, the plunger suction pump II, the slag discharge manifold and the switching cylinder.

9. The working method of the automatic sampling, weighing and transportation system for drill cuttings according to claim 8, characterized in that: When conveying drill cuttings, two groups of plunger suction pumps work in coordination, and the slag discharge manifold is connected with one of the cavities of the double-port flange plate through the manifold flange at the end; when the oil cylinder of plunger suction pump I retracts, the oil cylinder of plunger suction pump II extends, and at this time, the drill cuttings are sucked into the cavity of plunger suction pump I, and the drill cuttings in plunger suction pump II are pumped out through the slag discharge manifold; after both suction pumps complete the action, the manifold flange is connected to the cavity of plunger suction pump I on the double-port flange plate under the action of the switching oil cylinder; then, the oil cylinder of plunger suction pump I extends, and the oil cylinder of plunger suction pump II retracts; the drill cuttings in the welding box are sucked into the cavity of the retracted oil cylinder of plunger suction pump II; the drill cuttings in plunger suction pump I are pumped out through the slag discharge manifold; this cycle of action can transport all the drill cutting solution in the welding box to the designated position.

10. The working method of the automatic sampling, weighing and transportation system for drill cuttings according to claim 8, characterized in that: When it is necessary to sample the drill cuttings, the driving cylinder of the sampling robot arm is controlled to retract slowly, and the sampling tray and the flipping device are sent to the sampling position; during this period, the pressure sensor in the valve group monitors the pressure change of the driving cylinder. When the pressure reaches 20 MPa, the system will consider that the driving cylinder is at the target position; before reaching the target position, the sampling tray is flipped under the action of the flipping device, and the drill cuttings in the sampling tray are poured into the weighing device; after the sampling is completed, the driving cylinder of the sampling robot arm is controlled to extend slowly, and the sampling tray is moved to the image capture position; during this process, the drill cuttings in the sampling tray will be scraped flat by the scraper to keep the sample surface flat and regular, and to ensure that the distance between the drill cutting sample and the image collector is constant; the conditions for determining that the sampling robot arm has reached the image capture position are the same as those of the sampling position; the image collector starts to capture the drill cuttings image, and then numbers the drill cuttings image according to the time and drilling depth information; the image is transmitted and stored in the core controller.

Images