Shale oil core freezing sampling device

Abstract

The invention discloses a shale oil rock core freezing sampling device which comprises a rack, a table top fixedly connected to the top of the rack, a feeding power unit fixedly connected to the upper surface of the table top, a rotating power unit fixedly connected to the top of the feeding power unit, a sampling cutter connected to the rotating power unit, and a clamping unit, the clamping unit is fixedly connected to the portion, close to the feeding side of the feeding power unit, of the table top, the center line of the clamping unit is perpendicular to the axis of the sampling tool, and the lower surface of the table top is fixedly connected with the chip removing unit. According to the device, real-time freezing in the rock core sample drilling process can be realized through low-temperature cold air, and the influence on the test precision caused by component volatilization due to high temperature in the sample drilling process is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of rock sampling and relates to a shale oil core freezing sampling device. Background Art

[0002] In the process of oil and gas resource exploration and development, coring is required to understand the characteristics of the formation or test the lithology of the formation. However, the cores drilled underground cannot be directly used for indoor testing due to their shape and size. It is also necessary to dig small-sized rock samples based on the large-sized cores taken out from the underground for indoor testing of rock sample parameters.

[0003] Among many parameters, accurate measurement of fluid properties and oil saturation is one of the most important tasks in shale oil evaluation. However, since conventional core sampling is carried out at room temperature and pressure in an open space, it will cause rapid volatilization of light hydrocarbon components in the shale reservoir, thus affecting the accuracy of fluid properties and oil saturation measurements. However, since the frozen core plunger sampling process cannot be cooled using fluids such as water / oil, the semi-closed cylindrical tool will generate heat due to high-speed rotation friction during the drilling process, which will generate a high temperature of nearly 555°C in a short period of time, resulting in a large amount of hydrocarbon fluid inside the shale oil core plunger being lost, affecting the measurement accuracy. In view of the above problems, it is necessary to develop a sampling device that can cool or freeze the shale oil core in real time during the shale oil core drilling process, so as to improve the fidelity of the shale oil core samples taken. Summary of the invention

[0004] The purpose of the present invention is to provide a shale oil core freezing sampling device, which solves the problem in the prior art that the sampling cannot be frozen and the measurement accuracy cannot be improved.

[0005] The technical solution adopted by the present invention is that the present invention is a shale oil core freezing sampling device, including a stand, a table top is fixedly connected to the top of the stand, a feed power unit is fixedly connected to the upper surface of the table top, a rotating power unit is fixedly connected to the top of the feed power unit, the rotating power unit is connected to a sampling tool, and also includes a clamping unit, the clamping unit is fixedly connected to the table top close to the feeding side of the feed power unit, the center line of the clamping unit is perpendicular to the axis of the sampling tool, and the lower surface of the table top is fixedly connected to a chip removal unit.

[0006] The present invention is also characterized in that:

[0007] The stand unit includes a stand body, a chip removal hole is opened on the table between the clamping unit and the feed power unit, a sensor mounting plate is fixedly connected to the side of the table close to the sampling tool, a sensor is fixedly connected to the sensor mounting plate, and a fixed beam is fixedly connected to the side of the table away from the feeding direction of the feed power unit.

[0008] The feed power unit includes a slide rail seat, a slide table is matched and connected to the slide rail on the top of the slide rail seat, a power head fixing plate is fixedly connected to the top of the slide table, a servo motor is fixedly connected to the side of the slide away from the feeding direction, a pair of screw support seats are fixedly connected to the slide rail seat, a ball screw is connected between the two screw support seats, a ball screw nut is slidably connected to the ball screw, the ball screw nut is fixedly connected to the slide table, the ball screw is arranged along the length of the slide rail seat, the end of the ball screw away from the feeding direction is connected to the output shaft of the servo motor through a coupling, a telescopic dust cover is fixedly connected to the end of the slide table close to the servo motor, the side of the slide table is fixedly connected to one end of the drag chain, and the other end of the drag chain is fixedly connected to the table top.

[0009] The rotary power unit includes a reducer, the input end of the reducer is fixedly connected to a frequency conversion motor, the output end of the reducer is fixedly connected to a power head, the bottom of the power head is fixedly connected to the upper surface of the slide, a rotating spindle is arranged inside the power head, the rotating spindle is a hollow shaft, both ends of the rotating spindle pass through both ends of the power head, the output end of the rotating spindle is fixedly connected to a tool chuck, the head of the tool chuck is fixedly connected to a sampling tool, and the input end of the rotating spindle passes through the entire housing of the reducer.

[0010] The input end of the main shaft is sleeved with a gas injection rod.

[0011] The clamping unit includes a clamping table, an upper surface of the clamping table is provided with a V-shaped groove along the length direction, and two sides of the clamping table are respectively fixedly connected with vertically arranged first cylinders, the top of the telescopic rod of each first cylinder is connected with a pressure plate connecting rod and a first pressure plate in sequence, the telescopic rod is hinged to the pressure plate connecting rod, the pressure plate connecting rod is fixed to the first pressure plate, a chain rod is hinged in the middle of the pressure plate connecting rod, and the chain rod is fixed to the cylinder body of the first cylinder, and two ends of the clamping table on a side close to the feed power unit are respectively fixedly connected with vertically arranged second cylinders, the telescopic rod of the second cylinder is fixedly connected with a second pressure plate, the second pressure plate and the telescopic rod are perpendicular to each other, and a rock sample storage table is fixedly connected to a side of the clamping table close to the sampling tool, a plurality of anti-slip pads are fixedly connected to the surface of the V-shaped groove, and a through hole is opened on the side of the clamping groove close to the rock sample storage table.

[0012] The chip removal unit includes a chip guide cone groove, the upper surface of the chip guide cone groove is fixedly connected to the lower surface of the table top and is arranged corresponding to the chip removal holes, the lower interface of the chip guide cone groove is fixedly connected to a chip removal pipe, a dust suction port is provided on the side of the chip removal pipe close to the chip guide cone groove, the bottom of the chip removal pipe is fixedly connected to a chip collection box, and the chip collection box is fixedly connected to the frame body.

[0013] The sampling tool is a hollow cylinder.

[0014] A plurality of pulleys are fixedly connected to the bottom of the platform body, and a plurality of lifting rings are fixedly connected to one side of the platform body close to the pulleys.

[0015] The beneficial effects of the present invention are as follows: (1) the system of the present invention is designed for shale oil sampling, and existing metal drilling machines and other devices are not suitable for shale oil rock sampling; (2) the system of the present invention can achieve real-time freezing of the core drilling process through low-temperature cold air, thereby avoiding volatilization of components caused by high temperature during the drilling process, thereby affecting the test accuracy; (3) the system of the present invention can realize the simultaneous operation of two sampling tools, thereby improving the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of a shale oil core freezing sampling device;

[0017] Figure 2 It is a schematic diagram of the structure of the bench unit in the shale oil core freezing sampling device;

[0018] Figure 3 It is a structural schematic diagram of a feed power unit in a shale oil core freezing sampling device;

[0019] Figure 4 It is another structural schematic diagram of the feed power unit in the shale oil core freezing sampling device;

[0020] Figure 5 It is a schematic diagram of the structure of the rotary power unit in the shale oil core freezing sampling device;

[0021] Figure 6 It is another structural schematic diagram of the rotary power unit in the shale oil core freezing sampling device;

[0022] Figure 7 It is a partial structural diagram of a shale oil core freezing sampling device;

[0023] Figure 8 It is a schematic diagram of the structure of the clamping unit in the shale oil core freezing sampling device;

[0024] Fig. 9 It is a schematic diagram of the structure of the sampling tool in the shale oil core freezing sampling device;

[0025] Fig.10 It is a schematic diagram of the structure of the chip removal unit in the shale oil core freezing sampling device.

[0026] In the figure: 1-bench unit, 1a-bench body, 1b-pulley, 1c-lifting ring, 1d-chip removal hole, 1e-sensor mounting plate, 1g-fixed beam, 2-feed power unit, 2a-slide rail seat, 2b-slide table, 2c-power head fixing plate, 2d-screw support seat, 2e-ball screw, 2f-ball screw nut, 2g-servo motor, 2h-coupling, 2i-telescopic dust cover, 2j-drag chain, 3-rotation power unit, 3a-frequency conversion motor machine, 3b-reducer, 3c-power head, 3d-tool chuck, 3e-rotating spindle, 3f-gas injection rod, 4-sampling tool, 5-clamping unit, 5a-clamping table, 5b-first cylinder, 5c-first pressure plate, 5d-rock sample storage table, 5e-pressure plate connecting rod, 5f-chain rod, 5g-second pressure plate, 6-core, 7-chip removal unit, 7a-chip collection box, 7b-chip discharge pipe, 7c-chip guide cone groove, 7d-dust suction nozzle, 8-display control unit. DETAILED DESCRIPTION

[0027] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1 As shown, the present invention provides a shale oil core freezing sampling device, including a stand 1, a table top is fixedly connected to the top of the stand 1, a feed power unit 2 is fixedly connected to the upper surface of the table top, a rotating power unit 3 is fixedly connected to the top of the feed power unit 2, the rotating power unit 3 is connected to a sampling tool 4, and also includes a clamping unit 5, the clamping unit 5 is fixedly connected to the table top close to the feeding side of the feed power unit 2, the center line of the clamping unit 5 is perpendicular to the axis of the sampling tool 4, a chip removal unit 7 is fixedly connected to the lower surface of the table top, and a display control unit 8 is fixedly connected to the stand body 1a.

[0029] like Figure 2 As shown, the stand unit 1 includes a stand body 1a, a plurality of pulleys 1b are fixedly connected to the bottom of the stand body 1a, a plurality of hanging rings 1c are fixedly connected to the side of the stand body 1a close to the pulley 1b, a chip removal hole 1d is opened on the table top between the clamping unit 5 and the feed power unit 2, a sensor mounting plate 1e is fixedly connected to the side of the table top close to the sampling tool 4, a sensor is fixedly connected to the sensor mounting plate 1e, and a fixed beam 1g is fixedly connected to the side of the table top away from the feeding direction of the feed power unit 2.

[0030] like Figure 3 , Figure 4As shown, the feed power unit 2 includes a slide rail seat 2a, a slide table 2b is matched and connected to the slide rail on the top of the slide rail seat 2a, a power head fixing plate 2c is fixedly connected to the top of the slide table 2b, a servo motor 2g is fixedly connected to the side of the slide table 2b away from the feeding direction, a pair of screw support seats 2d are fixedly connected to the slide rail seat 2a, a ball screw 2e is connected between the two screw support seats 2d, a ball screw nut 2f is slidably connected to the ball screw 2e, the ball screw nut 2f is fixedly connected to the slide table 2b, the ball screw 2e is arranged along the length of the slide rail seat 2a, the end of the ball screw 2e away from the feeding direction is connected to the output shaft of the servo motor 2g through a coupling 2h, a telescopic dust cover 2i is fixedly connected to the end of the slide table 2b close to the servo motor 2g, the side of the slide table 2b is fixedly connected to one end of the drag chain 2j, and the other end of the drag chain 2j is fixedly connected to the table top.

[0031] like Figure 5 , Figure 6 , Figure 7 As shown, the rotating power unit 3 includes a reducer 3b, the input end of the reducer 3b is fixedly connected to the frequency conversion motor 3a, the output end of the reducer 3b is fixedly connected to the power head 3c, the bottom of the power head 3c is fixedly connected to the upper surface of the slide 2b, and a rotating spindle 3e is arranged inside the power head 3c. The rotating spindle 3e is a hollow shaft, and the two ends of the rotating spindle 3e pass through the two ends of the power head 3c. The output end of the rotating spindle 3e is fixedly connected to the tool chuck 3d, and the head of the tool chuck 3d is fixedly connected to the sampling tool 4, the input end of the rotating spindle 3e passes through the entire shell of the reducer 3b, and the input end of the spindle is sleeved with a gas injection rod.

[0032] like Figure 8 As shown, the clamping unit 5 includes a clamping platform 5a, the upper surface of the clamping platform 5a is provided with a V-shaped groove along the length direction, and the two sides of the clamping platform 5a are respectively fixedly connected with vertically arranged first cylinders 5b, the top end of the telescopic rod of each first cylinder 5b is hinged to one end of a pressure plate connecting rod 5e, and the other end of the pressure plate connecting rod 5e is fixedly connected to the first pressure plate 5c, the pressure plate connecting rod 5e is hinged to one end of a chain rod 5f, and the other end of the chain rod 5f is fixedly connected to the cylinder body of the first cylinder 5b, and the two ends of the clamping platform 5a on the side close to the feed power unit 2 are respectively fixedly connected with vertically arranged second cylinders, the telescopic rod of the second cylinder is fixedly connected to the second pressure plate 5g, and the second pressure plate 5g and the telescopic rod are perpendicular to each other, and the side of the clamping platform 5a close to the sampling tool 4 is fixedly connected with a rock sample storage platform 5d, and a plurality of anti-slip pads are fixedly connected to the surface of the V-shaped groove, and a through hole is opened on the side of the clamping groove close to the rock sample storage platform 5d.

[0033] like Fig. 9 As shown, the sampling tool 4 is in the shape of a hollow column.

[0034] like Fig.10As shown, the chip removal unit 7 includes a chip guide cone groove 7c, the upper surface of the chip guide cone groove 7c is fixedly connected to the lower surface of the table and is arranged corresponding to the chip removal hole 1d, the lower interface of the chip guide cone groove 7c is fixedly connected to a chip removal pipe 7b, a dust suction nozzle 7d is fixedly connected to the side of the chip removal pipe 7b close to the chip guide cone groove 7c, the bottom of the chip removal pipe 7b is fixedly connected to a chip collection box 7a, and the chip collection box 7a is fixedly connected to the frame body 1a.

[0035] like Figure 1 As shown, a plurality of pulleys 1b are fixedly connected to the bottom of the platform body 1a, and a plurality of hanging rings 1c are fixedly connected to one side of the platform body 1a close to the pulley 1b.

[0036] The working principle of the device is to control the states of the servo motor 2g and the variable frequency motor 3a by setting parameters on the display control panel on the display control unit 8. The servo motor 2g drives the coupling 2h to rotate and further drives the ball screw 2e to rotate. During this process, the ball screw 2e only rotates but does not have an axial feed movement. During the rotation of the ball screw 2e, the ball screw nut 2f that cooperates with the ball screw 2e generates movement along the axis direction of the ball screw 2e. The ball screw nut 2f drives the slide 2b to move forward or backward along the axis direction of the ball screw 2e. The rotary power unit 3 is installed on the slide 2b, so the movement of the slide 2b can further drive the rotary power unit The element 3 moves; the frequency conversion motor 3a drives the rotating spindle 3e to rotate through the reducer 3b, and the rotating spindle 3e is fixedly connected to the tool chuck 3d, and the tool chuck 3d clamps the sampling tool 4, so that the frequency conversion motor 3a can ultimately control the rotation of the sampling tool 4; the sampling tool 4 samples on the core 6, and the feeding movement of the sampling tool 4 is realized by the servo motor 2g controlling the slide 2b, and the rotation of the sampling tool 4 is realized by the frequency conversion motor 3a controlling the rotating spindle 3e; the feeding amount and speed of the sampling tool 4 are realized by the display control unit 8 respectively controlling the speed of the servo motor 2g and the frequency conversion motor 3a, so that the sampling tool 4 can drill small-sized rock samples on the core 6 for testing.

[0037] The gas injection rod 3f is connected to the air cooler through a pipeline. When the sampling tool 4 is drilling a rock sample, the low-temperature cold air cools the sampling tool 4 and the rock sample entering the sampling tool 4 and carries out some rock cuttings.

[0038] The rock chips generated when the sampling tool 4 samples the core 6 fall into the chip discharge hole 1d under its own weight, and the rock chips falling into the chip discharge hole 1d enter the chip collection box 7a through the chip guide cone groove 7c and the chip discharge pipe 7b; the fine particles such as dust that are not easy to fall off generated during the drilling process are connected to the dust suction system through the dust suction port 7d for removal.

[0039] Example 1

[0040] like Figure 1As shown, the shale oil core freezing sampling device proposed in this embodiment includes a stand 1, a table top is fixedly connected to the top of the stand 1, a feeding power unit 2 is fixedly connected to the upper surface of the table top, a rotating power unit 3 is fixedly connected to the top of the feeding power unit 2, the rotating power unit 3 is connected to the sampling tool 4, and also includes a clamping unit 5, the clamping unit 5 is fixedly connected to the table top close to the feeding side of the feeding power unit 2, the center line of the clamping unit 5 is perpendicular to the axis of the sampling tool 4, and a chip removal unit 7 is fixedly connected to the lower surface of the table top.

[0041] Example 2

[0042] like Figure 1-8 As shown, the shale oil core freezing sampling device proposed in this embodiment includes a stand 1, a table top is fixedly connected to the top of the stand 1, a feeding power unit 2 is fixedly connected to the upper surface of the table top, a rotating power unit 3 is fixedly connected to the top of the feeding power unit 2, the rotating power unit 3 is connected to the sampling tool 4, and also includes a clamping unit 5, the clamping unit 5 is fixedly connected to the table top close to the feeding side of the feeding power unit 2, the center line of the clamping unit 5 is perpendicular to the axis of the sampling tool 4, and a chip removal unit 7 is fixedly connected to the lower surface of the table top.

[0043] The stand unit 1 includes a stand body 1a, a plurality of pulleys 1b are fixedly connected to the bottom of the stand body 1a, a plurality of hanging rings 1c are fixedly connected to the side of the stand body 1a close to the pulley 1b, a chip removal hole 1d is opened on the table top between the clamping unit 5 and the feed power unit 2, a sensor mounting plate 1e is fixedly connected to the side of the table top close to the sampling tool 4, a sensor is fixedly connected to the sensor mounting plate 1e, and a fixed beam 1g is fixedly connected to the side of the table top away from the feeding direction of the feed power unit 2.

[0044] The feed power unit 2 includes a slide rail seat 2a, a slide table 2b is matched and connected to the slide rail at the top of the slide rail seat 2a, a power head fixing plate 2c is fixedly connected to the top of the slide table 2b, a servo motor 2g is fixedly connected to the side of the slide table 2b away from the feeding direction, a pair of screw support seats 2d are fixedly connected to the slide rail seat 2a, a ball screw 2e is connected between the two screw support seats 2d, a ball screw nut 2f is slidably connected to the ball screw 2e, the ball screw nut 2f is fixedly connected to the slide table 2b, the ball screw 2e is arranged along the length of the slide rail seat 2a, the end of the ball screw 2e away from the feeding direction is connected to the output shaft of the servo motor 2g through a coupling 2h, a telescopic dust cover 2i is fixedly connected to the end of the slide table 2b close to the servo motor 2g, the side of the slide table 2b is fixedly connected to one end of the drag chain 2j, and the other end of the drag chain 2j is fixedly connected to the table top.

[0045] The rotating power unit 3 includes a reducer 3b, the input end of the reducer 3b is fixedly connected to the frequency conversion motor 3a, the output end of the reducer 3b is fixedly connected to the power head 3c, the bottom of the power head 3c is fixedly connected to the upper surface of the slide 2b, a rotating spindle 3e is arranged inside the power head 3c, the rotating spindle 3e is a hollow shaft, the two ends of the rotating spindle 3e pass through the two ends of the power head 3c, the output end of the rotating spindle 3e is fixedly connected to the tool chuck 3d, the head of the tool chuck 3d is fixedly connected to the sampling tool 4, and the input end of the rotating spindle 3e passes through the entire shell of the reducer 3b.

[0046] The input end of the main shaft 3e is sleeved with a gas injection rod 3f, and one end of the gas injection rod 3f away from the main shaft 3e is fixedly connected to the fixed beam 1g.

[0047] The clamping unit 5 includes a clamping platform 5a, and a V-shaped groove is provided on the upper surface of the clamping platform 5a along the length direction. The two sides of the clamping platform 5a are respectively fixedly connected with vertically arranged first cylinders 5b, the top end of the telescopic rod of each first cylinder 5b is hinged to one end of a pressure plate connecting rod 5e, and the other end of the pressure plate connecting rod 5e is fixedly connected to the first pressure plate 5c, the pressure plate connecting rod 5e is hinged to one end of a chain rod 5f, and the other end of the chain rod 5f is fixedly connected to the cylinder body of the first cylinder 5b, and the two ends of the clamping platform 5a on the side close to the feed power unit 2 are respectively fixedly connected with vertically arranged second cylinders, the telescopic rod of the second cylinder is fixedly connected to the second pressure plate 5g, and the second pressure plate 5g and the telescopic rod are perpendicular to each other, and the side of the clamping platform 5a close to the sampling tool 4 is fixedly connected with a rock sample storage platform 5d, and a plurality of anti-slip pads are fixedly connected to the surface of the V-shaped groove, and a through hole is provided on the side of the clamping groove close to the rock sample storage platform 5d.

[0048] Example 3

[0049] like Figure 1-9 As shown, the shale oil core freezing sampling device proposed in this embodiment includes a stand 1, a table top is fixedly connected to the top of the stand 1, a feed power unit 2 is fixedly connected to the upper surface of the table top, a rotating power unit 3 is fixedly connected to the top of the feed power unit 2, the rotating power unit 3 is connected to a sampling tool 4, and also includes a clamping unit 5, the clamping unit 5 is fixedly connected to the table top close to the feeding side of the feed power unit 2, the center line of the clamping unit 5 is perpendicular to the axis of the sampling tool 4, and a chip removal unit 7 is fixedly connected to the lower surface of the table top.

[0050] The stand unit 1 includes a stand body 1a, a plurality of pulleys 1b are fixedly connected to the bottom of the stand body 1a, a plurality of hanging rings 1c are fixedly connected to the side of the stand body 1a close to the pulley 1b, a chip removal hole 1d is opened on the table top between the clamping unit 5 and the feed power unit 2, a sensor mounting plate 1e is fixedly connected to the side of the table top close to the sampling tool 4, a sensor is fixedly connected to the sensor mounting plate 1e, and a fixed beam 1g is fixedly connected to the side of the table top away from the feeding direction of the feed power unit 2.

[0051] The feed power unit 2 includes a slide rail seat 2a, a slide table 2b is matched and connected to the slide rail at the top of the slide rail seat 2a, a power head fixing plate 2c is fixedly connected to the top of the slide table 2b, a servo motor 2g is fixedly connected to the side of the slide table 2b away from the feeding direction, a pair of screw support seats 2d are fixedly connected to the slide rail seat 2a, a ball screw 2e is connected between the two screw support seats 2d, a ball screw nut 2f is slidably connected to the ball screw 2e, the ball screw nut 2f is fixedly connected to the slide table 2b, the ball screw 2e is arranged along the length of the slide rail seat 2a, the end of the ball screw 2e away from the feeding direction is connected to the output shaft of the servo motor 2g through a coupling 2h, a telescopic dust cover 2i is fixedly connected to the end of the slide table 2b close to the servo motor 2g, the side of the slide table 2b is fixedly connected to one end of the drag chain 2j, and the other end of the drag chain 2j is fixedly connected to the table top.

[0052] The rotating power unit 3 includes a reducer 3b, the input end of the reducer 3b is fixedly connected to the frequency conversion motor 3a, the output end of the reducer 3b is fixedly connected to the power head 3c, the bottom of the power head 3c is fixedly connected to the upper surface of the slide 2b, a rotating spindle 3e is arranged inside the power head 3c, the rotating spindle 3e is a hollow shaft, the two ends of the rotating spindle 3e pass through the two ends of the power head 3c, the output end of the rotating spindle 3e is fixedly connected to the tool chuck 3d, the head of the tool chuck 3d is fixedly connected to the sampling tool 4, and the input end of the rotating spindle 3e passes through the entire shell of the reducer 3b.

[0053] The input end of the main shaft 3e is sleeved with a gas injection rod 3f, and one end of the gas injection rod 3f away from the main shaft 3e is fixedly connected to the fixed beam 1g.

[0054] The clamping unit 5 includes a clamping platform 5a, and a V-shaped groove is provided on the upper surface of the clamping platform 5a along the length direction. The two sides of the clamping platform 5a are respectively fixedly connected with vertically arranged first cylinders 5b, the top end of the telescopic rod of each first cylinder 5b is hinged to one end of a pressure plate connecting rod 5e, and the other end of the pressure plate connecting rod 5e is fixedly connected to the first pressure plate 5c, the pressure plate connecting rod 5e is hinged to one end of a chain rod 5f, and the other end of the chain rod 5f is fixedly connected to the cylinder body of the first cylinder 5b, and the two ends of the clamping platform 5a on the side close to the feed power unit 2 are respectively fixedly connected with vertically arranged second cylinders, the telescopic rod of the second cylinder is fixedly connected to the second pressure plate 5g, and the second pressure plate 5g and the telescopic rod are perpendicular to each other, and the side of the clamping platform 5a close to the sampling tool 4 is fixedly connected with a rock sample storage platform 5d, and a plurality of anti-slip pads are fixedly connected to the surface of the V-shaped groove, and a through hole is provided on the side of the clamping groove close to the rock sample storage platform 5d.

[0055] The sampling tool 4 is in the shape of a hollow column.

[0056] Example 4

[0057] like Figure 1-10As shown, the shale oil core freezing sampling device proposed in this embodiment includes a stand 1, a table top is fixedly connected to the top of the stand 1, a feeding power unit 2 is fixedly connected to the upper surface of the table top, a rotating power unit 3 is fixedly connected to the top of the feeding power unit 2, the rotating power unit 3 is connected to the sampling tool 4, and also includes a clamping unit 5, the clamping unit 5 is fixedly connected to the table top close to the feeding side of the feeding power unit 2, the center line of the clamping unit 5 is perpendicular to the axis of the sampling tool 4, and a chip removal unit 7 is fixedly connected to the lower surface of the table top.

[0058] The stand unit 1 includes a stand body 1a, a plurality of pulleys 1b are fixedly connected to the bottom of the stand body 1a, a plurality of hanging rings 1c are fixedly connected to the side of the stand body 1a close to the pulley 1b, a chip removal hole 1d is opened on the table top between the clamping unit 5 and the feed power unit 2, a sensor mounting plate 1e is fixedly connected to the side of the table top close to the sampling tool 4, a sensor is fixedly connected to the sensor mounting plate 1e, and a fixed beam 1g is fixedly connected to the side of the table top away from the feeding direction of the feed power unit 2.

[0059] The feed power unit 2 includes a slide rail seat 2a, a slide table 2b is matched and connected to the slide rail at the top of the slide rail seat 2a, a power head fixing plate 2c is fixedly connected to the top of the slide table 2b, a servo motor 2g is fixedly connected to the side of the slide table 2b away from the feeding direction, a pair of screw support seats 2d are fixedly connected to the slide rail seat 2a, a ball screw 2e is connected between the two screw support seats 2d, a ball screw nut 2f is slidably connected to the ball screw 2e, the ball screw nut 2f is fixedly connected to the slide table 2b, the ball screw 2e is arranged along the length of the slide rail seat 2a, the end of the ball screw 2e away from the feeding direction is connected to the output shaft of the servo motor 2g through a coupling 2h, a telescopic dust cover 2i is fixedly connected to the end of the slide table 2b close to the servo motor 2g, the side of the slide table 2b is fixedly connected to one end of the drag chain 2j, and the other end of the drag chain 2j is fixedly connected to the table top.

[0060] The rotating power unit 3 includes a reducer 3b, the input end of the reducer 3b is fixedly connected to the frequency conversion motor 3a, the output end of the reducer 3b is fixedly connected to the power head 3c, the bottom of the power head 3c is fixedly connected to the upper surface of the slide 2b, a rotating spindle 3e is arranged inside the power head 3c, the rotating spindle 3e is a hollow shaft, the two ends of the rotating spindle 3e pass through the two ends of the power head 3c, the output end of the rotating spindle 3e is fixedly connected to the tool chuck 3d, the head of the tool chuck 3d is fixedly connected to the sampling tool 4, and the input end of the rotating spindle 3e passes through the entire shell of the reducer 3b.

[0061] The input end of the main shaft 3e is sleeved with a gas injection rod 3f, and one end of the gas injection rod 3f away from the main shaft 3e is fixedly connected to the fixed beam 1g.

[0062] The clamping unit 5 includes a clamping platform 5a, and a V-shaped groove is provided on the upper surface of the clamping platform 5a along the length direction. The two sides of the clamping platform 5a are respectively fixedly connected with vertically arranged first cylinders 5b, the top end of the telescopic rod of each first cylinder 5b is hinged to one end of a pressure plate connecting rod 5e, and the other end of the pressure plate connecting rod 5e is fixedly connected to the first pressure plate 5c, the pressure plate connecting rod 5e is hinged to one end of a chain rod 5f, and the other end of the chain rod 5f is fixedly connected to the cylinder body of the first cylinder 5b, and the two ends of the clamping platform 5a on the side close to the feed power unit 2 are respectively fixedly connected with vertically arranged second cylinders, the telescopic rod of the second cylinder is fixedly connected to the second pressure plate 5g, and the second pressure plate 5g and the telescopic rod are perpendicular to each other, and the side of the clamping platform 5a close to the sampling tool 4 is fixedly connected with a rock sample storage platform 5d, and a plurality of anti-slip pads are fixedly connected to the surface of the V-shaped groove, and a through hole is provided on the side of the clamping groove close to the rock sample storage platform 5d.

[0063] The chip removal unit 7 includes a chip guide cone groove 7c, the upper surface of which is fixedly connected to the lower surface of the table and arranged corresponding to the chip removal hole 1d, a chip removal pipe 7b is fixedly connected to the lower interface of the chip guide cone groove 7c, a dust suction nozzle 7d is fixedly connected to the side of the chip removal pipe 7b close to the chip guide cone groove 7c, a chip collection box 7a is fixedly connected to the bottom of the chip removal pipe 7b, and the chip collection box 7a is fixedly connected to the stand body 1a. The sampling tool 4 is a hollow column.

[0064] A display control unit 8 is fixedly connected to the stand body 1 a.

Claims

1. A shale oil core freezing sampling device, comprising a stand (1), wherein the top of the stand (1) is fixedly connected to a table, characterized in that: The upper surface of the table is fixedly connected to a feeding power unit (2), the top of the feeding power unit (2) is fixedly connected to a rotating power unit (3), the rotating power unit (3) is connected to a sampling tool (4), and further comprises a clamping unit (5), the clamping unit (5) is fixedly connected to the table near the feeding side of the feeding power unit (2), the center line of the clamping unit (5) is perpendicular to the axis of the sampling tool (4), and the lower surface of the table is fixedly connected to a chip removal unit (7).

2. The shale oil core freezing sampling device according to claim 1, characterized in that: The table unit (1) comprises a table body (1a), a chip removal hole (1d) is provided on the table top between the clamping unit (5) and the feeding power unit (2), a sensor mounting plate (1e) is fixedly connected to the side of the table top close to the sampling tool (4), a sensor is fixedly connected to the sensor mounting plate (1e), and a fixed beam (1g) is fixedly connected to the side of the table top away from the feeding direction of the feeding power unit (2).

3. The shale oil core freezing sampling device according to claim 2, characterized in that: The feed power unit (2) comprises a slide rail seat (2a), the bottom of the slide rail seat (2a) is fixedly connected to the table top, a slide table (2b) is matched and connected to the slide rail at the top of the slide rail seat (2a), a power head fixing plate (2c) is fixedly connected to the top of the slide table (2b), a servo motor (2g) is fixedly connected to the side of the slide table (2b) away from the feeding direction, a pair of screw support seats (2d) are fixedly connected to the slide rail seat (2a), a ball screw (2e) is connected between the two screw support seats (2d), and the ball screw ( A ball screw nut (2f) is slidably connected to the slide (2e), the ball screw nut (2f) is fixedly connected to the slide (2b), the ball screw (2e) is arranged along the length of the slide rail seat (2a), the end of the ball screw (2e) away from the feeding direction is connected to the output shaft of the servo motor (2g) through a coupling, the end of the slide (2b) close to the servo motor (2g) is fixedly connected to a telescopic dust cover (2i), the side of the slide (2b) is fixedly connected to one end of the drag chain (2j), and the other end of the drag chain (2j) is fixedly connected to the table surface.

4. The shale oil core freezing sampling device according to claim 3 is characterized in that: The rotary power unit (3) comprises a reducer (3b), the input end of the reducer (3b) is fixedly connected to a variable frequency motor (3a), the output end of the reducer (3b) is fixedly connected to a power head (3c), the bottom of the power head (3c) is fixedly connected to the upper surface of the slide (2b), a rotary spindle (3e) is arranged inside the power head (3c), the rotary spindle (3e) is a hollow shaft, the two ends of the rotary spindle (3e) pass through the two ends of the power head (3c), the output end of the rotary spindle (3e) is fixedly connected to a tool chuck (3d), the head of the tool chuck (3d) is fixedly connected to a sampling tool (4), and the input end of the rotary spindle (3e) passes through the entire housing of the reducer (3b).

5. The shale oil core freezing sampling device according to claim 4, characterized in that: The input end of the main shaft (3e) is sleeved with a gas injection rod (3f).

6. The shale oil core freezing sampling device according to claim 5, characterized in that: The clamping unit (5) comprises a clamping platform (5a), the upper surface of which is provided with a V-shaped groove along the length direction, and first cylinders (5b) arranged vertically are respectively fixedly connected on both sides of the clamping platform (5a), the top end of the telescopic rod of each first cylinder (5b) is hinged to one end of a pressure plate connecting rod (5e), ​​the other end of the pressure plate connecting rod (5e) is fixedly connected to the first pressure plate (5c), the pressure plate connecting rod (5e) is hinged to one end of a chain rod (5f), and the other end of the chain rod (5f) is hinged to the first pressure plate (5c). The cylinder body of a cylinder (5b) is fixedly connected, and two ends of the clamping platform (5a) close to the feeding power unit (2) are respectively fixedly connected to a second cylinder arranged vertically, the telescopic rod of the second cylinder is fixedly connected to a second pressing plate (5g), and the second pressing plate (5g) and the telescopic rod are perpendicular to each other, and the clamping platform (5a) is fixedly connected to a rock sample storage platform (5d) on the side close to the sampling tool (4), and a plurality of anti-slip pads are fixedly connected to the surface of the V-shaped groove, and a through hole is opened on the side of the clamping groove close to the rock sample storage platform (5d).

7. The shale oil core freezing sampling device according to claim 6, characterized in that: The chip removal unit (7) comprises a chip guide cone groove (7c), the upper surface of the chip guide cone groove (7c) is fixedly connected to the lower surface of the table and arranged corresponding to the chip removal hole (1d), the lower interface of the chip guide cone groove (7c) is fixedly connected to a chip removal pipe (7b), a side of the chip removal pipe (7b) close to the chip guide cone groove (7c) is fixedly connected to a dust suction nozzle (7d), the bottom of the chip removal pipe (7b) is fixedly connected to a chip collection box (7a), and the chip collection box (7a) is fixedly connected to the table frame (1a).

8. The shale oil core freezing sampling device according to claim 7, characterized in that: The sampling tool (4) is in the shape of a hollow column.

9. According to the shale oil core freezing sampling device according to any one of claims 2 to 8, a plurality of pulleys (1b) are fixedly connected to the bottom of the frame body (1a), and a plurality of lifting rings (1c) are fixedly connected to one side of the frame body (1a) close to the pulley (1b).

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