Sample withdrawing and receiving device for offshore drilling sampler

Abstract

The utility model discloses a sample withdrawing and receiving device for an offshore drilling sampler, which comprises a sample withdrawing joint, a water insulation disc, a guide pulley, a core barrel, a guide rope, a sample withdrawing and receiving synchronizer, a sample receiving disc ejector rod, a sample receiving disc, a driving shaft and a sample receiving disc opening shaft, and after the core barrel finishes sampling, the sample withdrawing joint is switched to the top end of the core barrel; the two ends of the sample withdrawing connector are connected with the sample withdrawing and receiving synchronizing device through guide ropes, and the sample withdrawing connector further drives a sample receiving disc ejector rod; the sample receiving disc and the driving shaft are fixedly connected to a sample outlet of the core barrel; and the sample receiving disc opening shaft is connected with the sample receiving disc and the driving shaft. The disturbance to the soil sample in the process of sample returning and manual sample receiving by adopting high-pressure water in the exploration process of offshore wind power engineering can be effectively prevented, and the accuracy of soil layer recording and the sample sealing quality are improved.

Description

Technical Field

[0001] The utility model relates to the field of offshore drilling sampling equipment, in particular to a sample withdrawing and receiving device for an offshore drilling sampler. Background Art

[0002] In recent years, a large number of offshore wind power facilities have been promoted and constructed, with development gradually extending into the deep sea. Unlike drilling sampling in onshore projects, offshore wind power projects involve subsurface soil layers with high moisture content, primarily composed of silt, silt, silt sand, or interbedded layers. This makes sampling and retrieval processes susceptible to disturbance, and inconsistencies between sample collection and retrieval speeds are common, impacting sample quality and the accuracy of subsequent test results. However, a portable and minimally disturbing sampling and retrieval device currently lacks practical applications.

[0003] Based on the above situation, the utility model proposes a sample withdrawing and receiving device for an offshore drilling sampler to effectively solve the above problems. Utility Model Content

[0004] In order to solve the problems existing in the background technology, the utility model provides a sample withdrawing and receiving device for an offshore drilling sampler.

[0005] The utility model adopts the following technical solutions:

[0006] A sample withdrawal and sample receiving device for an offshore drilling sampler comprises a sample withdrawal joint, a water baffle, a guide pulley, a core tube, a guide rope, a sample withdrawal and sample receiving synchronization device, a sample receiving tray top rod, a sample receiving tray and a drive shaft, and a sample receiving tray opening shaft. When the core tube completes sampling, the sample withdrawal joint is switched to the top of the core tube; the sample withdrawal joint has a built-in water baffle, and both ends of the sample withdrawal joint are connected to the sample withdrawal and sample receiving synchronization device through guide ropes, and further drive the sample receiving tray top rod; the sample receiving tray and the drive shaft are connected and fixed to the sample outlet of the core tube; the sample receiving tray opening shaft is connected to the sample receiving tray and the drive shaft.

[0007] Furthermore, the sample receiving plate and the driving shaft are fixed to the sample outlet of the core tube by screw connection through a sample receiving frame fixing frame.

[0008] Furthermore, the sample tray opening shaft is connected to the sample tray and the driving shaft through a sliding bar.

[0009] Furthermore, the sample withdrawal joint is a high-pressure water gun joint, and a guide pulley is provided on the side wall of the sample withdrawal joint, and a small hole with the same diameter as the guide rope is provided at the position of the guide wheel.

[0010] Furthermore, the diameter of the water baffle is variable. The water baffle is composed of four 90° sectors stacked together, and can fit tightly under the impact of water flow. The maximum diameter is consistent with the inner diameter of the core tube.

[0011] Furthermore, a coil spring is provided in the water isolation tray.

[0012] Furthermore, when the upper component of the sample withdrawing and receiving synchronous device is pulled backward, the lower push rod moves forward to push the push rod of the sample receiving tray.

[0013] Furthermore, the cross-sections of the upper and lower parts of the sample tray fixing frame are both semicircular, and the connection between the upper and lower parts is fixed by bolts through a rectangular connecting piece. The central axis of the bolt is provided with a transverse hole for the sample tray top rod to pass through.

[0014] Furthermore, the sample receiving plate and the driving shaft are integrated and have three groups, and each sample receiving plate is composed of two / circular discs.

[0015] Furthermore, the sample receiving tray opening shaft is provided with three layers of sleeves corresponding to the sample receiving tray and the driving shaft, and the front end of each layer of sleeves is connected to the upper and lower 1 / 4 arcs of the sample receiving tray.

[0016] The utility model provides a multi-point riveting mechanism for a new energy electromagnetic cooler cover plate, which can effectively prevent the disturbance of soil samples during the sampling and manual sampling processes using high-pressure water during the survey of offshore wind power projects, thereby improving the accuracy of soil layer cataloging and the quality of sample sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the overall structure diagram of the utility model;

[0018] Figure 2 This is a connection diagram of the core tube, sample receiving rack fixing clamp, sample receiving tray, drive shaft and sample receiving tray opening shaft of the utility model;

[0019] Figure 3 This is a connection diagram of the sleeve sample tray and the drive shaft and the sample tray opening shaft of the utility model;

[0020] Figure 4 This is a connection diagram of the sample removal and receiving synchronization device and the drive shaft of the utility model;

[0021] Figure 5 This is a cross-sectional view of the water isolation tray of the utility model.

[0022] The serial numbers marked in the figure are as follows: 1-sample withdrawal joint, 2-water isolation tray, 3-guide pulley, 4-core tube, 5-guide rope, 6-sample withdrawal and sample connection synchronization device, 7-sample tray push rod, 8-sample rack fixing clamp, 9-sample tray and drive shaft, 10-sample tray opening shaft, 11-sliding bar, 12-bolt hole, 13-first clamp, 14-direction changing push device, 15-second clamp, 16-push rod, 17-sample tray switch, 18-coil spring, 19-blade. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.

[0024] Refer to the attached Figure 1-5 A sample withdrawal and sample receiving device for an offshore drilling sampler comprises a sample withdrawal joint 1, a water baffle 2, a guide pulley 3, a core tube 4, a guide rope 5, a sample withdrawal and sample receiving synchronization device 6, a sample receiving tray top rod 7, a sample receiving tray and a drive shaft 9, and a sample receiving tray opening shaft 10. When the core tube completes sampling, the sample withdrawal joint 1 is connected to the top of the core tube; the sample withdrawal joint 1 has a built-in water baffle 2, and both ends of the sample withdrawal joint 1 are connected to the sample withdrawal and sample receiving synchronization device 6 through the guide rope 5, and further drive the sample receiving tray top rod 7; the sample receiving tray and the drive shaft 9 are connected and fixed to the sample outlet of the core tube 4; the sample receiving tray opening shaft 10 is connected to the sample receiving tray and the drive shaft 9, which ensures the horizontal movement of the sample receiving tray and locks and opens the sample receiving tray.

[0025] The sample receiving plate and the driving shaft 9 are fixed to the sample outlet of the core tube 4 by screw connection through the sample receiving frame fixing frame 8.

[0026] The sample tray opening shaft 10 is connected to the sample tray and the driving shaft 9 through a sliding bar.

[0027] The sample withdrawal joint 1 is a high-pressure water gun joint. A guide pulley is provided on the side wall of the sample withdrawal joint 1. A small hole with the same diameter as the guide rope 5 is provided at the position of the guide wheel. The small hole is designed to have high sealing performance to reduce the overflow of high-pressure water.

[0028] The diameter of the water baffle 2 is variable. The water baffle 2 is composed of four 90° sectors stacked together. It can fit tightly under the impact of water flow, and its maximum diameter is consistent with the inner diameter of the core tube.

[0029] A coil spring 18 is provided inside the water-isolating tray 2 to ensure that the entire tray is in close contact with the inner wall of the pipe.

[0030] When the upper member of the sample receiving and withdrawing synchronous device 6 is pulled backward, the lower push rod moves forward to push the sample receiving tray push rod 7. It can save the guide rope stroke and facilitate the adjustment of the sample receiving tray movement sensitivity.

[0031] The direction-changing pushing device 14 is a pushing device for the push rod 16, which can make the push rod 16 move forward synchronously while the body rope of the guide pulley 3 is pulled.

[0032] The cross-sections of the upper and lower parts of the sample tray fixing frame 8 are both semicircular, and the connection between the upper and lower parts is fixed by bolts through a rectangular connecting piece. The central axis of the bolt is provided with a transverse hole for the sample tray push rod 7 to pass through.

[0033] The sample receiving plate and the driving shaft 9 are integrated and have three groups. The sample receiving plates are composed of two 1 / 4 discs, which are superimposed on each other, and the sample receiving plate on the top moves first to simulate the manual sample receiving action and assist the soil sample to move forward actively.

[0034] Corresponding to the sample receiving tray and the driving shaft 9, the sample receiving tray opening shaft 10 is provided with three layers of sleeves, and the front end of each layer of sleeves is connected to the upper and lower superimposed 1 / 4 arc of the sample receiving tray on the left and right sides, so as to synchronously open the three sample receiving trays and reduce disturbance.

[0035] This device improves the core tube and designs a sample withdrawal switching hole and a closing device near the drill pipe connection end. When the core tube is sampled along with the drill pipe, the joint of the built-in water-blocking plate is installed to the end of the core tube; at the same time, the sample withdrawal rack and the sample withdrawal plate are installed to the front end of the core tube sample outlet, the height of the sample withdrawal plate is kept consistent with the core tube outlet, and the sample withdrawal and sample connection synchronization device is connected to the water-blocking plate. After the soil sample is completely pushed out to the designed length, the bottom of the sample withdrawal plate is gradually opened to transfer the soil sample to the transfer plate.

[0036] like Figure 1 As shown, when the core tube is sampled and removed from the borehole, the drilling joint is replaced with the sample withdrawal joint 1, and the sample receiving plate, drive shaft 9 and sliding bar 11 are installed and fixed through the sample receiving frame fixing clamp 8 using the bolt hole 12, and the sample receiving plate opening shaft 10 is installed and locked.

[0037] like Figure 3 、 Figure 4 As shown, the four blades 19 of the water retaining plate 2 are pressed into the sample withdrawal joint 1 through the compression coil spring 20, the center of which is connected to the sample withdrawal and sample receiving synchronization device 6, and the sample receiving plate push rods 7 on both sides are set to the initial position.

[0038] After installing the equipment according to the above steps, start the high-pressure water pump, and the water-blocking tray 2 moves forward under the push of the water flow, and at the same time drives the sample receiving tray, the driving shaft 9 and the sample receiving tray opening shaft 10 to be pushed out in sequence under the action of the first clamp 13 and the second clamp 15, and synchronously receives the soil sample pushed out of the core barrel; when the soil sample length reaches the set length, that is, the sample receiving tray is completely pushed out, the water-blocking tray 2 stops withdrawing the sample under the action of the guide rope 5; then twist the sample receiving tray switch 17 to open the sample receiving tray to both sides to complete the soil sample transfer.

[0039] Note that the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are readily apparent to those skilled in the art without departing from the scope of the present invention. Therefore, while the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include other equivalent embodiments without departing from the spirit of the present invention. The scope of the present invention is determined by the appended claims.

Claims

1. A sample withdrawing and receiving device for an offshore drilling sampler, characterized in that: The invention comprises a sample withdrawal joint (1), a water barrier (2), a guide pulley (3), a core tube (4), a guide rope (5), a sample withdrawal and sample receiving synchronization device (6), a sample receiving plate top rod (7), a sample receiving plate and a drive shaft (9), and a sample receiving plate opening shaft (10). When the core tube completes sampling, the sample withdrawal joint (1) is connected to the top of the core tube; the sample withdrawal joint (1) is equipped with a water barrier (2); both ends of the sample withdrawal joint (1) are connected to the sample withdrawal and sample receiving synchronization device (6) through the guide rope (5), and further drive the sample receiving plate top rod (7); the sample receiving plate and the drive shaft (9) are connected and fixed to the sample outlet of the core tube (4); and the sample receiving plate opening shaft (10) is connected to the sample receiving plate and the drive shaft (9).

2. The sample withdrawing and receiving device for an offshore drilling sampler according to claim 1, characterized in that: The sample receiving plate and the driving shaft (9) are fixed to the sample outlet of the core tube (4) by screw connection through the sample receiving frame fixing frame (8).

3. The sample withdrawing and receiving device for an offshore drilling sampler according to claim 1, characterized in that: The sample tray opening shaft (10) is connected to the sample tray and the driving shaft (9) via a sliding bar.

4. The sample withdrawing and receiving device for an offshore drilling sampler according to claim 1, characterized in that: The sample withdrawal joint (1) is a high-pressure water gun joint. A guide pulley is provided on the side wall of the sample withdrawal joint (1). A small hole having the same diameter as the guide rope (5) is provided at the position of the guide pulley.

5. The sample withdrawing and receiving device for an offshore drilling sampler according to claim 1, characterized in that: The diameter of the water baffle (2) is variable. The water baffle (2) is formed by stacking four 90° sectors, and the maximum diameter is consistent with the inner diameter of the core tube.

6. The sample withdrawing and receiving device for an offshore drilling sampler according to claim 5, characterized in that: A coil spring (20) is provided in the water isolation tray (2).

7. The sample withdrawing and receiving device for an offshore drilling sampler according to claim 1, characterized in that: When the upper component of the sample withdrawing and receiving synchronization device (6) is pulled backward, the lower push rod moves forward to push the push rod (7) of the sample receiving tray.

8. The sample withdrawing and receiving device for an offshore drilling sampler according to claim 2, characterized in that: The cross-sections of the upper and lower parts of the sample tray fixing frame (8) are both semicircular, and the connection between the upper and lower parts is fixed by bolts through a rectangular connecting piece. The central axis of the bolt is provided with a transverse hole for the sample tray top rod (7) to pass through.

9. The sample withdrawing and receiving device for an offshore drilling sampler according to claim 1, characterized in that: The sample receiving disc and the driving shaft (9) are integrated and have three groups. Each sample receiving disc is composed of two 1 / 4 discs stacked on each other.

10. The sample withdrawing and receiving device for an offshore drilling sampler according to claim 9, characterized in that: The sample receiving plate opening shaft (10) is provided with three layers of sleeves corresponding to the sample receiving plate and the driving shaft (9), and the front end of each layer of sleeves is connected to the upper and lower superimposed 1 / 4 arc of the sample receiving plate.

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