A core tube for complex stratum prospecting

Abstract

The utility model relates to the technical field of core sampling tubes, specifically a core sampling tube for complex strata prospecting, including a barrel, and also including: two semi-cylinders, the two semi-cylinders can be combined into a cylinder, and the two semi-cylinders are arranged in the barrel, and a plurality of reset mechanisms are arranged between the outer side of the semi-cylinder and the barrel; a docking tube, one end of the docking tube is arranged on one end of the barrel, the docking tube and the barrel are coaxially arranged and the two are an integrated structure, and the inner diameter of the docking tube is consistent with the inner diameter of the semi-cylinder; an insert tube, one end of the insert tube is arranged at the other end of the docking tube, the insert tube and the docking tube are an integrated structure and are coaxially arranged. After the sampling of the utility model is completed, each core sampling tube is disassembled in sections. At this time, the two semi-cylinders in the barrel of the core sampling tube are separated from each other, and the sample cannot contact the semi-cylinder, so the sample can be directly poured out without forced removal, thereby ensuring the integrity of the sample.

Description

Technical Field

[0001] The utility model relates to the technical field of core pipes, in particular to a core pipe for prospecting in complex strata. Background Art

[0002] In the field of geological exploration, using coring devices for geological sampling is a very common exploration activity. Specifically, after understanding the general geological conditions, the drill bit is screwed downward, and a coring tube is connected to the drill bit. After reaching a certain depth, the stratigraphic geological sample of the location can be obtained from the coring tube. This method can directly obtain address samples and provide geological engineers with real sample data, which is of great practical significance for studying the stratigraphic geological conditions at the location.

[0003] When the soil is relatively dry, the sample in the core tube fits tightly against the inner wall of the core tube, and the sample is not easy to remove. If it is forcibly removed (such as applying a thrust to one end of the core tube), the sample is easily damaged. Utility Model Content

[0004] Based on the deficiencies in the prior art mentioned in the above background technology, the utility model provides a core sampling tube for prospecting in complex strata.

[0005] The utility model overcomes the above technical problems by adopting the following technical solutions, specifically:

[0006] A coring tube for prospecting in complex strata, comprising a barrel and:

[0007] Two semi-cylinders, the two semi-cylinders can be combined into a cylinder, and the two semi-cylinders are arranged in the cylinder body, and a plurality of reset mechanisms are arranged between the outer side of the semi-cylinders and the cylinder body;

[0008] A docking sleeve, one end of which is arranged on one end of the cylinder body, the docking sleeve and the cylinder body are coaxially arranged and the two are an integral structure, and the inner diameter of the docking sleeve is consistent with the inner diameter of the semi-cylinder;

[0009] An inserting tube, one end of which is arranged on the other end of the docking tube, the inserting tube and the docking tube are an integral structure and are coaxially arranged, and the outer diameter of the inserting tube is consistent with the outer diameter of the semi-cylinder.

[0010] As a further solution of the utility model: the reset mechanism includes a double-section telescopic cylinder, a tension spring and a connecting plate, a limit ring coaxially arranged therewith is fixed to the outer side of one end of the double-section telescopic cylinder, the other end of the double-section telescopic cylinder is fixed to the connecting plate, the connecting plate is fixed to the semi-cylinder, the tension spring is sleeved on the double-section telescopic cylinder, and the two ends of the tension spring are respectively fixed on the connecting plate and the limit ring.

[0011] As a further solution of the utility model: the inner side wall of the cylinder is provided with a slide groove with a T-shaped cross section, a sliding block adapted thereto is slidingly arranged inside the slide groove, and one end of the double-section telescopic cylinder is fixed on the sliding block.

[0012] As a further solution of the utility model: an inclined surface is provided on the inner side of the other end of the insert tube.

[0013] As a further solution of the utility model: a limiting plate is fixed on the outer side of the semi-cylinder.

[0014] As a further solution of the utility model: an outer side of the docking cylinder is provided with an external thread, the other end of the cylinder body is provided with a connecting cylinder integrally formed therewith, and an inner side wall of the connecting cylinder is provided with an internal thread.

[0015] As a further solution of the utility model: both side ends of one of the semi-cylinders are provided with docking strips which are an integral structure therewith, and both side ends of the other semi-cylinder are provided with docking grooves which are compatible with the docking strips.

[0016] After adopting the above structure, the utility model has the following effective effects compared with the prior art:

[0017] After sampling is completed, each core tube is disassembled in sections. At this time, the two semi-cylinders in the barrel of the core tube are separated from each other, and the sample cannot contact the semi-cylinder. The sample can be poured out directly without forced removal, thereby ensuring the integrity of the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 for Figure 1 Schematic cross-sectional view of .

[0020] Figure 3 for Figure 3 A is an enlarged structural diagram of FIG.

[0021] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at B.

[0022] Figure 5 It is a side sectional schematic diagram of the local structure of the utility model.

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the utility model from above.

[0024] In the figure: 1. Cylinder body; 2. Docking cylinder; 3. Insert cylinder; 4. Semi-circular cylinder; 5. Connecting plate; 6. Tension spring; 7. Double-section telescopic cylinder; 8. Limiting ring; 9. Sliding block; 10. Limiting plate; 11. Connecting cylinder; 12. Inclined surface; 13. Docking strip; 14. Slide groove; 15. Reset mechanism. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figures 1 to 6 In the embodiment of the utility model, a coring pipe for prospecting in complex strata includes a barrel 1 and also includes:

[0027] Two semi-cylinders 4, the two semi-cylinders 4 can be combined into one cylinder, and the two semi-cylinders 4 are arranged in the cylinder body 1, and a plurality of reset mechanisms 15 are arranged between the outer sides of the semi-cylinders 4 and the cylinder body 1;

[0028] A docking tube 2, one end of which is arranged on one end of the cylinder 1, the docking tube 2 and the cylinder 1 are coaxially arranged and the two are an integral structure, and the inner diameter of the docking tube 2 is consistent with the inner diameter of the semi-cylinder 4;

[0029] An inserting sleeve 3, one end of which is arranged at the other end of the butt-jointing sleeve 2, the inserting sleeve 3 and the butt-jointing sleeve 2 are an integral structure and are coaxially arranged, and the outer diameter of the inserting sleeve 3 is consistent with the outer diameter of the semi-circular cylinder 4;

[0030] In the utility model, a plurality of coring tubes are connected end to end, and an insert 3 in one of the coring tubes is inserted into another coring tube. The insert 3 meshes the two semi-cylinders 4 with each other, and then the spliced ​​coring tubes are installed on a sampler for sampling. After the sampling is completed, each coring tube is disassembled in sections. At this time, the two semi-cylinders 4 in the barrel 1 of the coring tube are separated from each other, and the sample cannot contact the semi-cylinders 4. The sample can be poured out directly without forced removal, thereby ensuring the integrity of the sample.

[0031] Specifically, the reset mechanism 15 includes a double-section telescopic cylinder 7, a tension spring 6 and a connecting plate 5. A limit ring 8 coaxially arranged therewith is fixed to the outer side of one end of the double-section telescopic cylinder 7, and the other end of the double-section telescopic cylinder 7 is fixed to the connecting plate 5. The connecting plate 5 is fixed to the semi-cylinder 4. The tension spring 6 is sleeved on the double-section telescopic cylinder 7, and the two ends of the tension spring 6 are respectively fixed on the connecting plate 5 and the limit ring 8. When the two semi-cylinders 4 are engaged with each other, the tension spring 6 is stretched and the double-section telescopic cylinder 7 is elongated. It can be seen that the semi-cylinder 4 has a tendency to reset.

[0032] Specifically, the inner wall of the cylinder 1 is provided with a slide groove 14 with a T-shaped cross section, and a slider 9 adapted thereto is slidably arranged inside the slide groove 14, and one end of the double-section telescopic cylinder 7 is fixed on the slider 9. When disassembling, the semi-cylinder 4 slides out along the slide groove 14 with the help of the slider 9 for disassembly.

[0033] Specifically, a slope 12 is provided on the inner side of the other end of the inserting tube 3 , and the slope 12 is provided to better squeeze the semi-cylinder 4 into the inserting tube 3 .

[0034] Specifically, a limiting plate 10 is fixed on the outer side of the semi-cylinder 4 . The limiting plate 10 is designed to limit the moving distance of the semi-cylinder 4 so that the outer diameter of the semi-cylinder 4 can be aligned with the inclined surface 12 .

[0035] Specifically, an outer side of the docking cylinder 2 is provided with an external thread, and the other end of the cylinder body 1 is provided with a connecting cylinder 11 integrally formed therewith, and an inner side wall of the connecting cylinder 11 is provided with an internal thread.

[0036] Specifically, both side ends of one of the semi-cylinders 4 are provided with docking strips 13 which are integrally formed therewith, and both side ends of the other semi-cylinder 4 are provided with docking grooves which are compatible with the docking strips 13 . The arrangement of the docking strips 13 and the docking grooves is used to improve the structural strength of the two semi-cylinders 4 .

[0037] Working principle: connect multiple coring tubes end to end, insert the insert tube 3 in one coring tube into another coring tube, and the two semi-cylinders 4 enter the insert tube 3 along the inclined surface 12 of the insert tube 3. At this time, the two semi-cylinders 4 are meshed with each other, and the docking strip 13 is inserted into the docking groove. When the two semi-cylinders 4 are meshed with each other, the tension spring 6 is stretched and the double-section telescopic cylinder 7 is elongated. It can be seen that the semi-cylinder 4 has a tendency to reset. Then the spliced ​​coring tubes are installed on the sampler for sampling. After the sampling is completed, the coring tubes are disassembled in sections. At this time, the two semi-cylinders 4 in the barrel 1 of the coring tube are separated from each other, and the sample cannot contact the semi-cylinders 4. The sample can be poured out directly without forced removal, thereby ensuring the integrity of the sample.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A coring barrel for complex strata prospecting, comprising a barrel (1), characterized in that: Also includes: Two semi-cylinders (4), the two semi-cylinders (4) can be combined into one cylinder, and the two semi-cylinders (4) are arranged inside the cylinder body (1), and a plurality of reset mechanisms (15) are arranged between the outer sides of the semi-cylinders (4) and the cylinder body (1); A docking sleeve (2), one end of which is arranged on one end of the cylinder (1), the docking sleeve (2) and the cylinder (1) are coaxially arranged and the two are an integral structure, and the inner diameter of the docking sleeve (2) is consistent with the inner diameter of the semi-cylinder (4); An inserting cylinder (3), one end of which is arranged on the other end of the docking cylinder (2), the inserting cylinder (3) and the docking cylinder (2) are an integral structure and are coaxially arranged, and the outer diameter of the inserting cylinder (3) is consistent with the outer diameter of the semi-cylinder (4).

2. A core barrel for complex stratum prospecting according to claim 1, characterized in that: The reset mechanism (15) comprises a double-section telescopic cylinder (7), a tension spring (6) and a connecting plate (5); a limiting ring (8) coaxially arranged therewith is fixed to the outer side of one end of the double-section telescopic cylinder (7); the other end of the double-section telescopic cylinder (7) is fixed to the connecting plate (5); the connecting plate (5) is fixed to the semi-cylinder (4); the tension spring (6) is sleeved on the double-section telescopic cylinder (7), and the two ends of the tension spring (6) are respectively fixed to the connecting plate (5) and the limiting ring (8).

3. A core barrel for complex stratum prospecting according to claim 2, characterized in that: The inner wall of the cylinder (1) is provided with a slide groove (14) with a T-shaped cross section, a sliding block (9) adapted thereto is slidably arranged inside the slide groove (14), and one end of the double-section telescopic cylinder (7) is fixed on the sliding block (9).

4. A core barrel for complex stratum prospecting according to claim 3, characterized in that: The other end of the insert tube (3) is provided with an inclined surface (12) on the inner side.

5. The core barrel for complex stratum prospecting according to claim 1, characterized in that: A limiting plate (10) is fixed on the outer side of the semi-cylinder (4).

6. A core barrel for complex stratum prospecting according to claim 1, characterized in that: The outer side of the docking tube (2) is provided with an external thread, and the other end of the cylinder body (1) is provided with a connecting tube (11) which is an integral structure therewith, and the inner side wall of the connecting tube (11) is provided with an internal thread.

7. A core barrel for complex stratum prospecting according to claim 1, characterized in that: Both side ends of one of the semi-cylinders (4) are provided with docking strips (13) integrally formed therewith, and both side ends of the other semi-cylinder (4) are provided with docking grooves matched with the docking strips (13).

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