CN209799913U

CN209799913U - Core taking pipe assembly capable of being lengthened

Info

Publication number: CN209799913U
Application number: CN201920414505.0U
Authority: CN
Inventors: 李智; 田赟; 陆昕
Original assignee: Chengdu Hami Geotechnical Drilling Equipment Factory
Current assignee: Chengdu Hami Geotechnical Drilling Equipment Factory
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2019-12-17
Anticipated expiration: 2029-03-29

Abstract

The utility model discloses a core pipe subassembly of getting that can prolong, including at least two sets of semigroups pipe that closes, it is equipped with the protection tube to overlap at every group semigroup pipe, still includes the adapter sleeve, the adapter sleeve is used for connecting two adjacent protection tube tip, in the both ends of adapter sleeve stretched into the protection tube, just the internal diameter and the semigroup pipe internal diameter looks adaptation of adapter sleeve, the both ends and the protection tube of adapter sleeve are detachable connection. The utility model arranges the protection tube outside the half-closed tube, which can protect the two half-closed tubes after splicing, so as to reduce the expansion and deformation degree of the half-closed tube during coring; the end parts of two adjacent protection pipes are detachably connected by adopting the connecting sleeve, so that the core taking pipe can be lengthened according to the designed core taking length to obtain a longer core taking pipe assembly; meanwhile, the two ends of the connecting sleeve can limit the end part of the half-closed pipe, so that the half-closed pipe is prevented from axially moving too much in the protective pipe, and the rock core can smoothly enter the adjacent half-closed pipe through the connecting sleeve.

Description

Core taking pipe assembly capable of being lengthened

Technical Field

The utility model relates to a ground is got the core field, concretely relates to core pipe subassembly is got to ground that can prolong.

Background

Coring is the process of sampling rock from the stratum to be drilled in order to know the geological condition of the stratum, and coring is carried out by connecting a coring bit with a hollow drill rod. The coring bit comprises a bit body and a plurality of alloy blades arranged at the front end of the bit body, a group of semi-closed pipes are arranged in the hollow drill rod, two semi-closed pipes in each group are spliced into a round pipe and are clamped when the coring bit is used, and a core enters the semi-closed pipes when coring is carried out. By adopting the semi-closed pipe, the semi-closed pipe is easy to expand and deform during coring, so that the core is unqualified; meanwhile, the existing semi-closed pipe is usually processed and manufactured according to the core length requirement, and when the core length is increased in design, the semi-closed pipe needs to be processed and manufactured again, so that the construction operation is inconvenient, and great resource waste is also caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at: to current semi-closed pipe when using, there is the big deformation that rises and influence the core to and when core length increase is got in the design, the unable problem of adjusting length of semi-closed pipe, provide a core pipe subassembly is got to connecing can form the protection to two semi-closed pipes after the amalgamation, with the big deformation degree that rises that reduces the semi-closed pipe, can get core length according to the design simultaneously and connect long, the operation of being convenient for when the construction, resources are saved is favorable to reducing construction cost.

In order to realize the purpose, the utility model discloses a technical scheme be:

The utility model provides a core pipe subassembly is got to joint growth, includes at least two sets of semigroups pipe, overlaps at every semigroup pipe overcoat and is equipped with the protection tube, still includes the adapter sleeve, the adapter sleeve is used for connecting two adjacent protection tube end portions, in the both ends of adapter sleeve stretched into the protection tube, just the internal diameter and the semigroup pipe internal diameter looks adaptation of adapter sleeve, the both ends and the protection tube of adapter sleeve are detachable connection.

The utility model has the advantages that the at least two groups of half-closed pipes are arranged, and the protection pipes are sleeved outside the half-closed pipes, so that the two half-closed pipes after being spliced can be protected, and the expansion deformation degree of the half-closed pipes during coring can be reduced; the end parts of the two adjacent protection tubes are connected by the connecting sleeve, and the two ends of the connecting sleeve are detachably connected with the protection tubes, so that the core taking tube assembly can be lengthened according to the designed core taking length, the core taking tube assembly is longer, the operation is convenient during construction, the resource is saved, and the construction cost is reduced; simultaneously, the two ends of the connecting sleeve extend into the protective pipe, and the inner diameter of the connecting sleeve is matched with the inner diameter of the semi-closed pipe, so that the two ends of the connecting sleeve can limit the end part of the semi-closed pipe, the semi-closed pipe is prevented from axially shifting too much in the protective pipe, and the rock core can smoothly enter the adjacent combined semi-closed pipe through the connecting sleeve.

as the preferred scheme of the utility model, the both ends and the protection tube of adapter sleeve are threaded connection. Adopt threaded connection for other detachable connections, it is more convenient to use the dismouting.

As the preferred scheme of the utility model, be equipped with on the outer wall of adapter sleeve along radial extension annular arch, it has along axial recess to open on annular arch. The annular bulge is arranged on the outer wall of the connecting sleeve, so that the length of the two ends of the connecting sleeve extending into the protective pipe can be controlled; the annular bulge is provided with an axial groove for wind and water to pass through between the hollow drill rod and the protection pipe.

As the utility model discloses an optimal scheme, annular protrusion sets up for the both ends symmetry of adapter sleeve, and the length that can control the both ends of adapter sleeve and stretch into in the protective tube is unanimous.

As the preferred scheme of the utility model, the protection tube still is equipped with the hanging hole on the outer wall that is close to both ends. After coring, the hanging hole is hooked by the hook to pull the whole core taking pipe assembly out of the hollow drill rod.

As the utility model discloses a preferred scheme is equipped with tenon and mortise respectively on two half close pipes of every group, and it is located half close pipe amalgamation seam both sides respectively. The tenon and the mortise are respectively arranged on the two half-closed pipes of each group, when the two half-closed pipes are spliced into the circular pipe, the tenon and the mortise play a role in positioning between the two half-closed pipes, and dislocation and play of the two half-closed pipes in the axial direction are avoided.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. The utility model has the advantages that the at least two groups of half-closed pipes are arranged, and the protection pipes are sleeved outside the half-closed pipes, so that the two half-closed pipes after being spliced can be protected, and the expansion deformation degree of the half-closed pipes during coring can be reduced; the end parts of the two adjacent protection tubes are connected by the connecting sleeve, and the two ends of the connecting sleeve are detachably connected with the protection tubes, so that the core taking tube assembly can be lengthened according to the designed core taking length, the core taking tube assembly is longer, the operation is convenient during construction, the resource is saved, and the construction cost is reduced; meanwhile, two ends of the connecting sleeve extend into the protective pipe, and the inner diameter of the connecting sleeve is matched with the inner diameter of the half-closed pipe, so that the two ends of the connecting sleeve can limit the end part of the half-closed pipe, the half-closed pipe is prevented from axially shifting too much in the protective pipe, and the rock core can smoothly enter the adjacent combined half-closed pipe through the connecting sleeve;

2. The tenon and the mortise are respectively arranged on the two half-closed pipes of each group, when the two half-closed pipes are spliced into the circular pipe, the tenon and the mortise play a role in positioning between the two half-closed pipes, and dislocation and play of the two half-closed pipes in the axial direction are avoided.

Drawings

Fig. 1 is a schematic view of a extendable coring pipe assembly of the present invention.

FIG. 2 is a schematic diagram of the split of each half-tube.

The labels in the figure are: 1-half-closed pipe, 11-tenon, 12-mortise, 2-protection pipe, 21-hanging hole, 3-connecting sleeve and 31-annular bulge.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

examples

The present embodiments provide an extendable coring tube assembly;

As shown in fig. 1 and 2, the extendable core taking tube assembly in the present embodiment includes two sets of half-closed tubes 1, each set of half-closed tubes being sleeved with a protection tube 2; in order to facilitate the placement of each group of semi-closed pipes into the protection pipe, the inner diameters of two ends of the protection pipe are slightly larger than those of the rest parts of the protection pipe; still include adapter sleeve 3, the adapter sleeve is used for connecting two adjacent protection tube end portions, the both ends of adapter sleeve stretch into in the protection tube, just the internal diameter and the internal diameter looks adaptation of semi-closed pipe of adapter sleeve, the both ends and the protection tube of adapter sleeve are detachable to be connected.

In addition, the core taking pipe assembly is lengthened through the connecting sleeve, and after core taking is finished, the protective pipe (including the half-closed pipe and the core) can be taken out in a segmented mode, namely, the drilling machine does not need to move back far when the protective pipe is taken, and the track stroke of the drilling machine is favorably shortened. Simultaneously, can rise half-closed pipe when soft core gets into half-closed intraductal for the tight state that rises between half-closed pipe and the protection tube, if adopt integral coring pipe subassembly, it is then comparatively difficult to take out half-closed pipe from the protection tube, and this coring pipe subassembly is lengthened through the adapter sleeve, can carry out the segmentation with half-closed pipe ejecting from the protection tube, be favorable to reducing to take out half-closed required power of pipe, be favorable to shortening ejection cylinder stroke on the other hand.

in this embodiment, the two ends of the connecting sleeve 3 are connected with the protecting tube 2 by screw threads. Adopt threaded connection for other detachable connections, it is more convenient to use the dismouting.

In this embodiment, the outer wall of the connecting sleeve 3 is provided with an annular protrusion 31 extending along the radial direction, and the annular protrusion is provided with a groove along the axial direction. The length of the two ends of the connecting sleeve extending into the protective pipe can be controlled by arranging the annular bulge on the outer wall of the connecting sleeve; the annular bulge is provided with an axial groove for wind and water to pass through between the hollow drill rod and the protection pipe.

In this embodiment, the annular protrusions 31 are symmetrically arranged relative to the two ends of the connecting sleeve 3, so that the lengths of the two ends of the connecting sleeve extending into the protection tube can be controlled to be consistent.

In this embodiment, the outer wall of the protection tube 2 near both ends is further provided with a hanging hole 21. After coring, the hanging hole is hooked by the hook to pull the whole core taking pipe assembly out of the hollow drill rod.

In this embodiment, the two half-closed pipes 1 in each group are respectively provided with a tenon 11 and a mortise 12 which are respectively positioned at two sides of the half-closed pipe splicing seam. The tenon and the mortise are respectively arranged on the two half-closed pipes of each group, when the two half-closed pipes are spliced into the circular pipe, the tenon and the mortise play a role in positioning between the two half-closed pipes, and dislocation and play of the two half-closed pipes in the axial direction are avoided.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the principles of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a core pipe assembly is got to extendible, its characterized in that includes at least two sets of semicycle pipes, overlaps at every semicycle pipe of group and is equipped with the protection tube, still includes the adapter sleeve, the adapter sleeve is used for connecting two adjacent protection tube tip, in the protection tube was stretched into at the both ends of adapter sleeve, just the internal diameter and the semicycle pipe internal diameter looks adaptation of adapter sleeve, the both ends and the protection tube of adapter sleeve are detachable connection.

2. The extendable coring tube assembly of claim 1, wherein both ends of the nipple are threadedly connected to a protective tube.

3. The extendable coring tube assembly of claim 1, wherein the outer wall of the coupling sleeve is provided with a radially extending annular projection having an axially directed recess formed therein.

4. The extendable coring tube assembly of claim 3, wherein the annular projections are symmetrically disposed with respect to both ends of the connection sleeve.

5. The extendable coring tube assembly of claim 1, wherein the protective tube further comprises a hang hole on an outer wall proximate both ends.

6. The extendable coring tube assembly of claim 1, wherein each set of two half-close tubes has a tongue and a groove disposed on each side of the half-close tube split seam.