CN210768673U

CN210768673U - Semi-closed inner pipe structure and rope coring drilling tool

Info

Publication number: CN210768673U
Application number: CN201921374259.7U
Authority: CN
Inventors: 王坚; 易亚东
Original assignee: Zhuhai Egr Special Drilling Equipment Co ltd
Current assignee: Guangdong Engel Geological Equipment Technology Co ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-06-16
Anticipated expiration: 2029-08-22

Abstract

The utility model discloses a half formula inner tubular structure that closes, including the half pipe of two mutual interlocks, the connection can be dismantled to the tip of two half pipes, and half pipe left and right sides edge is continuous S type, and half pipe' S side edge has concave position and protruding position, and the protruding position of one of them half pipe and the concave position of another half pipe interlock contact each other and retrain each other in the circumference of interlock department, the protrusion direction of protruding position and the axial out of plumb of half pipe. The utility model also discloses a rope coring drilling tool. This inner tube structure adopts half closed structure, cut apart into two half pipes of mutual interlock after uniting two into one original inner tube and half closed pipe sleeve joint structure, with half pipe left and right sides edge design into continuous S type, dislocation or deformation when preventing half pipe and receiving the extrusion, the intermediate position of guaranteeing two half pipes also can tightly the interlock be in the same place, prevent that the rock core from leaking out, improve the rock core rate of taking, easy dismounting, easy operation, pull down behind the inner tube structure, two half pipe slants pull open alright separation to accomplish the action of falling the rock core.

Description

Semi-closed inner pipe structure and rope coring drilling tool

Technical Field

The utility model relates to an engineering geology probing technical field especially relates to inner tubular structure and rope coring drilling tool.

Background

When a traditional rope coring drilling tool drills a soil layer, silt or a broken coring stratum, in order to ensure the core sampling rate and avoid the influence on the original state of the core caused by the damage of the core when the core is toppled over, the inner pipe structure generally adopts a double-layer pipe structure and is mainly formed by mutually sleeving a common inner pipe and two half pipes, and parts such as an inner pipe cap assembly, a one-way valve assembly, an end cap, a check ring, a clamp spring seat, a clamp spring and the like are also required to be assisted to complete the core sampling operation; in addition, the middle part of the semi-closed pipe is easy to be dislocated or deformed in the using process, so that the using effect is influenced, the rock core of sand and soil is lost due to the gap formed by the dislocation of the semi-closed pipe, and the sampling rate is low; in addition, the cost is high, the service life is short due to deformation, the core is inconvenient to disassemble and assemble, and the time is long.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve one of the technical problem that exists among the prior art at least, provide an inner tubular structure and rope coring drilling tool, it can effectively solve dislocation and deformation problem, easy operation, the inner tubular structure dismouting is swift, and the rock core is taken the rate height.

The utility model provides a technical scheme that its technical problem adopted does:

half formula inner tubular structure that closes, including two half pipes of mutual interlock, the connection can be dismantled to the tip of two half pipes, half pipe left and right sides edge is continuous S type, half pipe' S side edge has concave position and protruding position, and the protruding position of one of them half pipe contacts and retrains each other in the circumference of interlock department with the concave position of another half pipe each other, the protruding direction of protruding position is out of plumb with the axial of half pipe.

As an improvement of the technical scheme, the angle between the protruding direction of the convex position and the axial direction of the half pipe is smaller than 45 degrees.

As an improvement of the technical scheme, the end part of the half pipe is provided with an external thread.

The rope coring drilling tool comprises an inner pipe cap assembly, a clamp spring seat and the semi-closed inner pipe structure, wherein the inner pipe cap assembly is detachably connected with the upper ends of two semi-pipes, and the clamp spring seat is detachably connected with the lower ends of the two semi-pipes.

As an improvement of the technical scheme, the lower end of the half pipe is provided with a first external thread, the upper end of the clamp spring seat is provided with a first internal thread, and the first internal thread is connected with the first external thread in a matching mode.

As an improvement of the above technical solution, the upper end of the half pipe has a second external thread, the lower end of the inner pipe cap assembly has a second internal thread, and the second internal thread is in fit connection with the second external thread.

As an improvement of the above technical solution, the inner pipe cap assembly detachably connects the upper ends of the two half pipes through a pipe joint, the upper ends of the half pipes are provided with second external threads, the lower end of the inner pipe cap assembly is provided with third external threads, the lower end of the pipe joint is provided with third internal threads connected with the second external threads in a matching manner, and the upper end of the pipe joint is provided with fourth internal threads connected with the third external threads in a matching manner.

As an improvement of the technical scheme, the lower end of the inner pipe cap assembly is further provided with a one-way valve, and the lower end of the clamp spring seat is provided with a clamp spring.

The beneficial effects of the utility model are that:

this inner tube structure adopts half-closed structure, cut apart into two half pipes of mutual interlock after uniting two into one original inner tube and half-closed pipe sleeve joint structure, design into continuous S type with half pipe left and right sides edge, the protruding position of one of them half pipe and the concave position of another half pipe interlock mutually the contact and mutually retrain in the circumference of interlock department, dislocation or deformation when preventing half pipe from receiving the extrusion, guarantee that the intermediate position of two half pipes also can interlock tightly together, prevent the rock core leakage, improve the rock core rate of takeout, and half pipe' S both ends and inner tube cap assembly, jump ring seat easy dismounting, and easy operation, after dismantling inner tube structure, two half pipes slant pull open alright separation, in order to accomplish the action of falling the rock core, ensure the original state of rock core.

Drawings

The present invention will be further described with reference to the accompanying drawings and specific embodiments, wherein:

FIG. 1 is a schematic structural view of an embodiment of a semi-enclosed inner tube structure of the present invention;

FIG. 2 is a schematic structural view of a first embodiment of a wireline core drill of the present invention;

fig. 3 is a schematic structural view of a second embodiment of the wireline core drill of the present invention.

Detailed Description

Referring to fig. 1, the utility model provides a half formula inner tubular structure that closes, half pipe 1 including two mutual interlocks, half pipe left and right sides edge is continuous S type, and half pipe' S side edge has concave position 11 and protruding position 12.

Protruding position 12 of one of them half pipe 1 and the mutual interlock contact of concave position 11 of another half pipe 1 and the circumference at interlock department retrain each other, protruding direction of 12 is out of plumb with the axial of half pipe 1, concretely, in this embodiment, the angle between protruding direction of 12 and the axial of half pipe 1 is less than 45, lateral edge dislocation or deformation when preventing half pipe 1 from receiving the extrusion, guarantee that the intermediate position of two half pipes 1 also can tightly interlock together, prevent the rock core leakage, two half pipes 1 slant pull open alright separation, in order to accomplish the action of falling the rock core, the original state of guarantee rock core.

In addition, the thickness of the half pipe 1 can be set to be the thickness of the traditional double-layer pipe structure, which can ensure that the rigidity and hardness of the inner pipe structure are enough, in addition, the end part of the half pipe 1 is provided with an external thread, the lower end of the half pipe 1 is provided with a first external thread 13, the upper end of the half pipe 1 is provided with a second external thread 14, which ensures that the end parts of the two half pipes 1 can be detachably connected,

further refer to fig. 2 and 3, the utility model discloses still provide the rope core drill, specifically include inner tube cap assembly 2, jump ring seat 3 and above-mentioned half closed inner tube structure, wherein the inner tube emits the upper end that assembly 2 can dismantle two half-pipes 1 of connection, and jump ring seat 3 can dismantle the lower extreme of connecting two half-pipes 1.

Specifically, the upper end of the clamp spring seat 3 is provided with a first internal thread 31, and the first internal thread 31 is in fit connection with the first external thread 13, that is, the lower ends of the two half pipes 1 are detachably connected with the clamp spring seat 3.

In order to accommodate different types of inner tube cap assemblies 2, there are two embodiments of the present invention.

The first embodiment: in the case that the inner tube cap assembly 2 has a second internal thread 21 at the lower end thereof, the second internal thread 21 is engaged with the second external thread 14, which corresponds to the upper ends of the two half tubes 1 being directly detachably connected to the inner tube cap assembly 2.

The first embodiment: in the case of the inner pipe cap assembly 2 having the third external thread 22 at the lower end, a pipe joint 4 is added, the pipe joint 4 has the third internal thread 41 connected with the second external thread 14 in a matching manner at the lower end, and has the fourth internal thread 42 connected with the third external thread 22 in a matching manner at the upper end, which is equivalent to that the upper ends of the two half pipes 1 are directly detachably connected with the inner pipe cap assembly 2, and the inner pipe cap assembly 2 is detachably connected with the upper ends of the two half pipes 1 through the pipe joint 4.

In addition, the lower end of the inner pipe cap assembly 2 is also provided with a one-way valve 5, and the lower end of the clamp spring seat 3 is provided with a clamp spring 6, so that the traditional parts such as a plug and a gasket are omitted. This rope coring drilling tool misplaces or warp when can preventing half pipe 1 from receiving the extrusion, guarantee that the intermediate position of two half pipes 1 also can tightly the interlock be in the same place, prevent the rock core leakage, improve the rock core rate of taking, and half pipe 1's both ends and inner

tube cap assembly

2, 3 easy dismounting of jump ring seat, and easy operation, after pulling down inner tubular structure, two half pipe 1 slants pull open alright separation, in order to accomplish the action of falling the rock core, the original state of guarantee rock core, it is also high to reduce manufacturing cost, also practice thrift the activity duration, and the life-span is very long.

The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments, and the technical effects of the present invention should be all included in the protection scope of the present invention as long as the technical effects are achieved by any of the same or similar means.

Claims

1. Half closed inner tube structure, its characterized in that: half pipe including two mutual interlocks, the connection can be dismantled to the tip of two half pipes, half pipe left and right sides edge is continuous S type, half pipe' S side edge has concave position and protruding position, and the protruding position of one of them half pipe and the concave position of another half pipe interlock contact each other and the circumference of interlock department retrains each other, the protrusion direction of protruding position and the axial of half pipe are out of plumb.

2. The semi-closed inner tube structure of claim 1, wherein: the angle between the protruding direction of the convex position and the axial direction of the half pipe is less than 45 degrees.

3. The semi-closed inner tube structure of claim 1, wherein: the ends of the half-pipes have external threads.

4. A wireline coring drill, characterized by: the pipe joint comprises an inner pipe cap assembly, a clamp spring seat and the semi-closed inner pipe structure as claimed in any one of claims 1 to 3, wherein the inner pipe cap assembly is detachably connected with the upper ends of the two half pipes, and the clamp spring seat is detachably connected with the lower ends of the two half pipes.

5. A wireline coring drill as set forth in claim 4, wherein: the lower extreme of half pipe has first external screw thread, the upper end of jump ring seat has first internal thread, first internal thread and first external screw thread cooperation are connected.

6. A wireline coring drill as set forth in claim 5, wherein: the upper end of the half pipe is provided with a second external thread, the lower end of the inner pipe cap assembly is provided with a second internal thread, and the second internal thread is connected with the second external thread in a matched mode.

7. A wireline coring drill as set forth in claim 5, wherein: the inner pipe cap assembly is detachably connected with the upper ends of two half pipes through a pipe joint, the upper ends of the half pipes are provided with second external threads, the lower end of the inner pipe cap assembly is provided with third external threads, the lower end of the pipe joint is provided with third internal threads connected with the second external threads in a matched mode, and the upper end of the pipe joint is provided with fourth internal threads connected with the third external threads in a matched mode.

8. A wireline core drill according to any of claims 4-7, characterized in that: the lower extreme of inner tube cap assembly still installs the check valve, the jump ring is installed to the lower extreme of jump ring seat.