CN210659937U

CN210659937U - Coal mine underground drilling sleeve pipe anti-fault-breakage protection device

Info

Publication number: CN210659937U
Application number: CN201921127964.7U
Authority: CN
Inventors: 王青振; 王安顺; 任邓君; 孙亚岳; 刑介波
Original assignee: Shaanxi Zhengtong Coal Industry Co Ltd
Current assignee: Shaanxi Zhengtong Coal Industry Co Ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-06-02
Anticipated expiration: 2030-03-17

Abstract

The utility model discloses a colliery is drilling sleeve pipe mistake proofing disconnected protection device in pit, including first sleeve pipe and protective case, first sheathed tube right-hand member is provided with protective case, protective case passes through welded connection at first sheathed tube right-hand member, first sleeve pipe passes through welded connection with protective case, protective case's right-hand member is provided with the second sleeve pipe, the utility model discloses in improve first sleeve pipe and second sheathed tube coupling part, inlay the silk and connect the position and add protective case to make first sleeve pipe and second sheathed tube coupling part form a whole, strengthen its shock resistance, increase solid tub of intensity, this protective case processing is simple, and the material acquires easily, convenient operation, especially to rock burst mine and the big mine of water pressure, the device's protective effect is better showing, is preventing first sleeve pipe, the protective case that the water pressure is big simultaneously, The second sleeve and the solid pipe structure are damaged to cause the fault phenomenon, and the practicability is high.

Description

Coal mine underground drilling sleeve pipe anti-fault-breakage protection device

Technical Field

The utility model belongs to the technical field of the underground mine is relevant, concretely relates to colliery is drilling sleeve pipe mistake proofing disconnected protection device in pit.

Background

The casing drilling technology is a drilling technology that during the drilling process, a casing pipe is directly used for replacing a drill string to complete the drilling operation, namely the casing pipe is used for replacing a drill rod and a drill collar to apply torque and drilling pressure to a drill bit, so that the casing pipe is put while drilling is carried out, and the casing pipe is left in a well to complete the well after the drilling is finished.

The existing underground drilling casing technology has the following problems: the existing underground drilling casing pipe has strong destructive power due to the concentrated mine stress caused by rock burst when working, particularly has serious damage to a drilling hole, and often has the condition of damaging a pipe fixing structure or breaking the casing pipe by mistake, particularly the connection part of two casing pipes.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a colliery is borehole sleeve pipe mistake proofing broken protection device in pit to current borehole sleeve pipe that proposes in solving above-mentioned background art takes place the problem of mistake breakage phenomenon because of the rock burst influence at borehole casing joint position when carrying out work.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a colliery is borehole casing mistake proofing disconnected protection device in pit, includes first sleeve pipe and protective case, first sheathed tube right-hand member is provided with protective case, protective case passes through welded connection at first sheathed tube right-hand member, first sleeve pipe passes through welded connection with protective case, protective case's right-hand member is provided with the second sleeve pipe, the second sleeve pipe cup joints the inside at protective case through pegging graft, protective case and second sleeve pipe pass through plug-in connection.

Preferably, the first sleeve comprises a first end cover, a first main body and an internal thread, the first end cover is arranged at the left end of the first main body, the internal thread is arranged inside the right end of the first main body, and the first sleeve is fixedly connected with the protective sleeve through the first main body in a welding mode.

Preferably, the protective sleeve comprises a welding part, a pipe body and an inserting hole, the welding part is arranged at the left end of the pipe body, the inserting hole is formed in the right end of the pipe body, and the protective sleeve is connected with the first sleeve through the welding part in a welding mode.

Preferably, the second sleeve comprises an outer wire, a second main body and a second end cover, the second end cover is arranged at the right end of the second main body, the outer wire is arranged at the left end of the second main body, and the second sleeve is fixedly connected with the first sleeve through the outer wire and the wire buckle.

Preferably, the protective sleeve is of a ring body structure with a hollow interior, the length of the protective sleeve is three meters, the diameter of the cross section of the outer circle of the protective sleeve is three hundred millimeters, and the diameter of the cross section of the inner circle of the protective sleeve is two hundred fifty millimeters.

Preferably, the welding part is of a hollow cylinder structure, the welding part is arranged at the left end of the pipe body through welding, and the welding part is connected with the first sleeve through welding.

Preferably, the first sleeve and the protective sleeve are connected through splicing welding, and the distance between the welding end of the first sleeve and the welding end of the protective sleeve is one point and five meters.

Preferably, the first sleeve and the second sleeve are both in a cylindrical structure, the first sleeve and the second sleeve are connected through a thread buckle, and the lengths of the first sleeve and the second sleeve are the same.

Compared with the prior art, the utility model provides a colliery is drilling sleeve pipe mistake proofing disconnected protection device in pit possesses following beneficial effect:

(1) the utility model discloses in improve the connecting portion of first sleeve pipe and second sleeve pipe, add at the embedded wire connection position and establish protective case to make the connecting portion of first sleeve pipe and second sleeve pipe form an organic whole, strengthen its shock resistance, increase solid tub of intensity, thus solved current drilling sleeve pipe when carrying out work the problem that the drilling sleeve pipe connecting portion takes place the fault-failure phenomenon because of the rock burst influence;

(2) the utility model discloses in this protective case processing is simple, and the material acquires easily, convenient operation, especially to the mine that rock burst mine and water pressure are big, the device's the better showing of protective effect is preventing that first sleeve pipe, second sleeve pipe and solid tubular construction from suffering destruction and taking place the fault phenomenon simultaneously, has stronger practicality.

Drawings

Fig. 1 is a schematic structural view of the casing pipe anti-false-breaking protection device of the present invention;

FIG. 2 is a schematic view of a first sleeve structure according to the present invention;

fig. 3 is a schematic structural view of the protective sleeve of the present invention;

FIG. 4 is a schematic view of a second sleeve structure according to the present invention;

in the figure: 1. a first sleeve; 11. a first end cap; 12. a first body; 13. internal thread; 2. protecting the sleeve; 21. welding; 22. a pipe body; 23. inserting holes; 3. a second sleeve; 31. external silk; 32. a second body; 33. a second end cap.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a coal mine underground drilling casing anti-error protection device comprises a first casing 1 and a protection casing 2, the right end of the first casing 1 is provided with the protection casing 2, the protection casing 2 is connected with the right end of the first casing 1 through welding, the first casing 1 comprises a first end cover 11, a first main body 12 and an inner wire 13, the left end of the first main body 12 is provided with the first end cover 11, the inner wire 13 is arranged inside the right end of the first main body 12, through the arrangement of the inner wire 13, the first casing 1 can be better connected with a second casing 3 under the action of the inner wire 13, the first casing 1 is fixedly connected with the protection casing 2 through the first main body 12, the first casing 1 is connected with the protection casing 2 through welding, the right end of the protection casing 2 is provided with the second casing 3, the second casing 3 is sleeved inside the protection casing 2 through splicing, the second sleeve 3 comprises an outer thread 31, a second main body 32 and a second end cover 33, the right end of the second main body 32 is provided with the second end cover 33, the left end of the second main body 32 is provided with the outer thread 31, the second sleeve 3 can be better connected with the first sleeve 1 under the action of the outer thread 31 by the arrangement of the outer thread 31, the first sleeve 1 and the second sleeve 3 are both in a cylindrical structure, the first sleeve 1 and the second sleeve 3 are connected by thread clamping, the first sleeve 1 and the second sleeve 3 are connected by thread, the first sleeve 1 and the second sleeve 3 can be more tightly connected, the first sleeve 1 and the second sleeve 3 are the same in length, the second sleeve 3 is fixedly connected with the first sleeve 1 by the outer thread 31, the protective sleeve 2 comprises a welding part 21, a pipe body 22 and an inserting hole 23, the left end of the tube body 22 is provided with a welding part 21, the welding part 21 is of a hollow cylinder structure, the welding part 21 is welded at the left end of the tube body 22, so that better connection stability can be achieved, the welding part 21 is arranged at the left end of the tube body 22 through welding, the welding part 21 is connected with the first sleeve 1 through welding, so that better connection stability can be achieved, the right end of the tube body 22 is provided with a plug hole 23, the protective sleeve 2 is connected with the first sleeve 1 through welding through the welding part 21, the first sleeve 1 is connected with the protective sleeve 2 through plug welding, and through welding, so that the first sleeve 1 and the protective sleeve 2 are connected more stably, the distance between the welding end of the first sleeve 1 and the protective sleeve 2 is a little five meters, and the protective sleeve 2 is of a hollow circular ring structure, through being provided with protective case 2 to make first sleeve 1 and second sleeve 3's the position of being connected form a whole, strengthen its shock resistance, increase solid tub intensity, protective case 2's length is three meters, and the cross-sectional diameter of protective case 2's excircle is three hundred millimeters, and the cross-sectional diameter of protective case 2's interior circle is two hundred fifty millimeters, and protective case 2 and second sleeve 3 are through the grafting connection.

The utility model discloses a theory of operation and use flow: after the utility model is installed, when the device is needed to be used, the device is firstly taken out, then the device is placed at the position to be connected, then when the operation of lowering the borehole casing is carried out in the mine, at this time, firstly the protective casing 2 is welded to one end of the first casing 1 containing the inner wire 13 through the welding part 21 on the ground, meanwhile, the length of the protective casing 2 should exceed a little five meters of the lower end of the first casing 1, then when the borehole casing is lowered, one section of the second casing 3 with the outer wire 31 is inserted into the protective casing 2 from the inside of the inserting hole 23 inside the protective casing 2, thus, the first casing 1 and the second casing 3 are connected together through the inner wire 13 and the outer wire 31, and the protective casing 2 can play a protection role in the connection position of the first casing 1 and the second casing 3, thereby, the connection position of the first casing 1 and the second casing 3 forms a whole, strengthen its shock resistance, increase solid tub of intensity, this protective case 2 processing is simple simultaneously, and the material acquires easily, convenient operation, especially to rock burst mine and the big mine of water pressure, the device's protective effect is better showing, is preventing simultaneously that first sleeve 1, second sleeve 3 and solid tub of structure from suffering destruction and taking place the fault phenomenon, has stronger practicality.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a colliery is drilling sleeve pipe mistake proofing disconnected protection device in pit, includes first sleeve pipe (1) and protective case (2), its characterized in that: the right-hand member of first sleeve pipe (1) is provided with protective case (2), protective case (2) are through welded connection at the right-hand member of first sleeve pipe (1), first sleeve pipe (1) is through welded connection with protective case (2), the right-hand member of protective case (2) is provided with second sleeve pipe (3), second sleeve pipe (3) cup joint the inside at protective case (2) through pegging graft, protective case (2) are through pegging graft with second sleeve pipe (3) and are connected.

2. The coal mine underground borehole casing mistake proofing protection device of claim 1, characterized in that: the first sleeve (1) comprises a first end cover (11), a first main body (12) and an inner wire (13), the left end of the first main body (12) is provided with the first end cover (11), the inner wire (13) is arranged inside the right end of the first main body (12), and the first sleeve (1) is fixedly connected with the protective sleeve (2) through the first main body (12) in a welding mode.

3. The coal mine underground borehole casing mistake proofing protection device of claim 1, characterized in that: the protective sleeve (2) comprises a welding part (21), a pipe body (22) and an inserting hole (23), the welding part (21) is arranged at the left end of the pipe body (22), the inserting hole (23) is arranged at the right end of the pipe body (22), and the protective sleeve (2) is connected with the first sleeve (1) through the welding part (21) in a welding mode.

4. The coal mine underground borehole casing mistake proofing protection device of claim 1, characterized in that: the second sleeve (3) comprises an outer wire (31), a second main body (32) and a second end cover (33), the right end of the second main body (32) is provided with the second end cover (33), the left end of the second main body (32) is provided with the outer wire (31), and the second sleeve (3) is fixedly connected with the first sleeve (1) through the outer wire (31) in a threaded manner.

5. The coal mine underground borehole casing mistake proofing protection device of claim 1, characterized in that: the protective sleeve (2) is of a hollow annular structure, the length of the protective sleeve (2) is three meters, the diameter of the cross section of the outer circle of the protective sleeve (2) is three hundred millimeters, and the diameter of the cross section of the inner circle of the protective sleeve (2) is two hundred fifty millimeters.

6. The coal mine underground borehole casing mistake proofing protection device of claim 3, characterized in that: the welding part (21) is of a hollow cylinder structure, the welding part (21) is arranged at the left end of the pipe body (22) through welding, and the welding part (21) is connected with the first sleeve (1) through welding.

7. The coal mine underground borehole casing mistake proofing protection device of claim 1, characterized in that: the first sleeve (1) is connected with the protective sleeve (2) in an inserting and welding mode, and the distance between the welding ends of the first sleeve (1) and the protective sleeve (2) is one point and five meters.

8. The coal mine underground borehole casing mistake proofing protection device of claim 1, characterized in that: the first sleeve pipe (1) and the second sleeve pipe (3) are both of a cylindrical structure, the first sleeve pipe (1) and the second sleeve pipe (3) are connected through screw threads in a clamping mode, and the first sleeve pipe (1) and the second sleeve pipe (3) are identical in length.