Multi-dimensional guide device for coal mine injection head

Abstract

The utility model relates to the technical field of coal mine underground operation equipment, and particularly discloses a multi-dimensional guide device for a coal mine injection head, which comprises a main body frame, an A-direction roller set, a B-direction roller set, a C-direction roller set and a D-direction roller set, the outer diameters of rollers of the A-direction roller set, the B-direction roller set, the C-direction roller set and the D-direction roller set are all along an arc line with the radius R, r is the guide radius of the working oil pipe, the gap between the outer diameters of the A-direction roller and the C-direction roller at the convergent end of the horn-mouth-shaped guide channel is the outer diameter of the oil pipe needing to be guided, and the gap between the outer diameters of the B-direction roller and the D-direction roller at the convergent end of the horn-mouth-shaped guide channel is the outer diameter of the oil pipe needing to be guided. By means of the roller sets in the four-direction space arc design, the requirement that the continuous pipe is guided into the injection head from multiple dimensional directions can be met, the requirement for the multi-dimensional guiding working condition of the underground coal mine injection head is met, and more feasible support is provided for construction of continuous pipe equipment in the underground coal mine environment.

Description

Technical Field

[0001] The utility model relates to the technical field of underground coal mine operation equipment, in particular to a multi-dimensional guiding device for a coal mine injector head. Background Art

[0002] With the continuous development of coiled tubing equipment and its technology, its advantages have attracted attention in more and more other related energy industries. In the coal industry, the prevention and control of coal mine gas disasters is still one of the most important safety works in current gas mines, and pre-drainage of coal seam gas is a necessary measure for gas mines. Hydraulic fracturing is an effective way to enhance the permeability of coal seams and a powerful guarantee for improving the concentration of pre-drained gas. With the mature development of underground coal mine directional drilling technology, directional long boreholes with controllable borehole horizons and trajectories and long borehole lengths are widely used in pre-drainage of coal seam gas, and the demand for coiled tubing directional long borehole segmented hydraulic fracturing technology is increasing rapidly.

[0003] Underground coal mine coiled tubing equipment is mainly used to push tool strings and transmit high-pressure water during operations such as segmented fracturing, perforating, and borehole repair of underground coal mine boreholes. Due to the uncertainty of the height and angle of underground coal mine wellbores, during on-site construction, it is necessary to adjust the angle and height of the injector head according to the actual situation to align with the wellbore to complete the coiled tubing hydraulic fracturing construction. Due to the changes in the height and angle of the equipment during each construction, the orientation of the coiled tubing on the drum entering the guiding device of the injector head will also change each time. Conventional injector head guiding devices are generally single-arc guiding structures, which can only meet the requirement of the coiled tubing entering the injector head at a fixed angle and cannot meet the variable guiding requirements in underground coal mines.

[0004] Therefore, it is necessary to propose an improvement to overcome the defects of the prior art. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problems in the prior art and provide a multi-dimensional guiding device for a coal mine injector head to meet the guiding requirements of the coiled tubing entering the injector head from multiple angles during underground coal mine coiled tubing hydraulic fracturing construction.

[0006] The technical solution of the utility model is as follows:

[0007] A multi-dimensional guiding device for a coal mine injection head, comprising a main body frame, an A-direction roller group including a number of A-direction rollers, the outer diameters of the A-direction rollers being arranged along an arc with a radius of R; a B-direction roller group including a number of B-direction rollers, the outer diameters of the B-direction rollers being arranged along an arc with a radius of R; a C-direction roller group symmetrically arranged with the A-direction roller group, including a number of C-direction rollers, the outer diameters of the C-direction rollers being arranged along an arc with a radius of R; a D-direction roller group symmetrically arranged with the B-direction roller group, including a number of D-direction rollers, the outer diameters of the D-direction rollers being arranged along an arc with a radius of R; where R is the guiding radius of the working oil pipe; the A-direction roller group, B-direction roller group, C-direction roller group and D-direction roller group are all arranged on the main body frame to form a flared guiding channel, and the gap between the outer diameters of the A-direction rollers and C-direction rollers at the converging end of the flared guiding channel is the outer diameter of the oil pipe to be guided, and the gap between the outer diameters of the B-direction rollers and D-direction rollers at the converging end of the flared guiding channel is the outer diameter of the oil pipe to be guided.

[0008] As a preferred technical solution, the main body frame includes two symmetrically arranged arc-shaped fan plates. The arc-shaped fan plates include straight sections and arc sections. The straight sections of the two arc-shaped fan plates are arranged in parallel, and the arc sections of the two arc-shaped fan plates are bent outward with the same radius R. The two straight sections are connected by a connecting plate, and a number of connecting pipes are connected between the two arc sections.

[0009] As a preferred technical solution, the A-direction roller group and the C-direction roller group are fixed on the outer side surfaces of the arc-shaped fan plates. A number of through holes are correspondingly arranged at the positions of the A-direction rollers and C-direction rollers on the arc-shaped fan plates. The A-direction rollers and C-direction rollers extend into the space between the two arc-shaped fan plates through the through holes, and the two ends of the B-direction rollers and D-direction rollers are respectively connected to the two arc-shaped fan plates.

[0010] As a preferred technical solution, an AC roller mounting seat is arranged on the outer side of the arc-shaped fan plate. The A-direction rollers and C-direction rollers are mounted on the AC roller mounting seat. BD roller mounting seats are uniformly arranged along an arc with a radius of R on the symmetry plane of the arc-shaped fan plate. The B-direction rollers and D-direction rollers are mounted on the BD roller mounting seats.

[0011] As a further preferred technical solution, the A-direction roller group includes: A-direction roller Aa, A-direction roller Ab, A-direction roller Ac, A-direction roller Ad; the C-direction roller group includes: C-direction roller Ca, C-direction roller Cb, C-direction roller Cc, C-direction roller Cd; the roller outer diameter gap between the A-direction roller Ad and the C-direction roller Cd is the outer diameter of the oil pipe to be guided.

[0012] As a preferred technical solution, the roller group in the B direction includes: roller Ba in the B direction, roller Bb in the B direction, roller Bc in the B direction, and roller Bd in the B direction; the roller group in the D direction includes: roller Da in the D direction, roller Db in the D direction, roller Dc in the D direction, and roller Dd in the D direction; the outer diameter clearance between roller Bd in the B direction and roller Dd in the D direction is the outer diameter of the oil pipe to be guided.

[0013] As a preferred technical solution, mounting holes are correspondingly arranged on the two arc-shaped fan plates.

[0014] The beneficial effects of the present utility model are as follows:

[0015] A multi-dimensional guiding device for a coal mine injection head of the present utility model, through a roller group with a four-way space arc design, can meet the need for the coiled tubing to be introduced into the injection head from multiple dimensional directions, meet the requirements of the multi-dimensional guiding working conditions of the injection head in the coal mine underground, and provide more feasible support for the construction of coiled tubing equipment in the coal mine underground environment. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall structure of a guiding device for a coal mine injection head of the present utility model;

[0017] Figure 2 is a schematic diagram of the roller group in the A direction and the roller group in the C direction of the present utility model;

[0018] Figure 3 is a schematic diagram of the roller group in the B direction and the roller group in the D direction of the present utility model;

[0019] Among them, 1. Main body frame; 11. Arc-shaped fan plate; 12. AC roller mounting seat; 13. BD roller mounting seat; 2. Roller group in the A direction; 21. Roller Aa in the A direction; 22. Roller Ab in the A direction; 23. Roller Ac in the A direction; 24. Roller Ad in the A direction; 3. Roller group in the B direction; 31. Roller Ba in the B direction; 32. Roller Bb in the B direction; 33. Roller Bc in the B direction; 34. Roller Bd in the B direction; 4. Roller group in the C direction; 41. Roller Ca in the C direction; 42. Roller Cb in the C direction; 43. Roller Cc in the C direction; 44. Roller Cd in the C direction; 5. Roller group in the D direction; 51. Roller Da in the D direction; 52. Roller Db in the D direction; 53. Roller Dc in the D direction; 54. Roller Dd in the D direction; 6. Connecting plate; 7. Connecting pipe; 8. Mounting hole. Detailed Embodiments

[0020] As Figure 1As shown in the figure, a multi-dimensional guiding device for a coal mine injector head of the present utility model includes a main body frame 1, an A-direction roller group 2, a B-direction roller group 3, a C-direction roller group 4, and a D-direction roller group 5. The C-direction roller group 4 is symmetrically arranged with the A-direction roller group 2, and the D-direction roller group 5 is symmetrically arranged with the B-direction roller group 3. The A-direction roller group 2 includes a number of A-direction rollers, the B-direction roller group 3 includes a number of B-direction rollers, the C-direction roller group 4 includes a number of C-direction rollers, and the D-direction roller group 5 includes a number of D-direction rollers. The outer diameters of the A-direction rollers, B-direction rollers, C-direction rollers, and D-direction rollers are all on an arc with a radius of R, where R is the guiding radius of the working oil pipe. The A-direction roller group 2, B-direction roller group 3, C-direction roller group 4, and D-direction roller group 5 are all arranged on the main body frame 1 to form a flared guiding channel. The gap between the outer diameters of the A-direction rollers and C-direction rollers at the converging end of the flared guiding channel is the outer diameter of the oil pipe to be guided, and the gap between the outer diameters of the B-direction rollers and D-direction rollers at the converging end of the flared guiding channel is the outer diameter of the oil pipe to be guided.

[0021] The main body frame 1 includes two symmetrically arranged arc-shaped fan plates 11. The arc-shaped fan plates 11 include straight sections and arc sections. The straight sections of the two arc-shaped fan plates 11 are arranged in parallel, and the arc sections of the two arc-shaped fan plates 11 are bent outward with the same radius R, where R is the guiding radius of the working oil pipe. The two straight sections are welded and connected by a connecting plate 6, and the two arc sections are welded and connected by a number of connecting pipes 7. Two mounting holes 8 are provided at the lower part of the main body frame 1 for connecting and fixing the guiding device to the coal mine injector head.

[0022] AC roller mounting seats 12 are evenly arranged on the outer sides of the arc-shaped fan plates 11, and the A-direction rollers and C-direction rollers are mounted on the AC roller mounting seats 12. Through holes are correspondingly provided at the positions of the A-direction rollers and C-direction rollers on the arc-shaped fan plates 11 to facilitate the extension of the roller bodies of the A-direction rollers and C-direction rollers to the inner side of the arc-shaped fan plates 11, so as to play a normal guiding role inside. As Figure 2 shown in the figure, in this embodiment, the A-direction roller group 2 includes: A-direction roller Aa21, A-direction roller Ab22, A-direction roller Ac23, A-direction roller Ad24. The outer diameters of the A-direction roller Aa21, A-direction roller Ab22, A-direction roller Ac23, and A-direction roller Ad24 are all on an arc with a radius of R, where R is the radius required for oil pipe guiding. The C-direction roller group 4 includes C-direction roller Ca41, C-direction roller Cb42, C-direction roller Cc43, C-direction roller Cd44. The outer diameters of the C-direction roller Ca41, C-direction roller Cb42, C-direction roller Cc43, and C-direction roller Cd44 are all on an arc with a radius of R, where R is the radius required for oil pipe guiding. From the flared guiding channel converging inward, the gap between the outer diameters of the innermost two pairs of rollers, the A-direction roller Ad24 and the C-direction roller Cd44, is the outer diameter of the oil pipe to be guided.

[0023] On the symmetrical plane of the arc-shaped fan plate 11, BD roller mounting seats 13 are uniformly arranged along an arc with a radius of R. B-direction rollers and D-direction rollers are mounted on the BD roller mounting seats 13. The two ends of the B-direction rollers and D-direction rollers are respectively connected to the two arc-shaped fan plates 11, and the B-direction rollers, D-direction rollers, A-direction rollers, and C-direction rollers are arranged alternately. In this embodiment, as Figure 3 shown, the B-direction roller group 3 includes: B-direction roller Ba31, B-direction roller Bb32, B-direction roller Bc33, and B-direction roller Bd34. The outer diameters of the rollers of the B-direction roller Ba31, B-direction roller Bb32, B-direction roller Bc33, and B-direction roller Bd34 are all located on the arc with a radius of R, and R is the radius required for tubing guidance. The D-direction roller group 5 includes: D-direction roller Da51, D-direction roller Db52, D-direction roller Dc53, and D-direction roller Dd54. The outer diameters of the rollers of the D-direction roller Da51, D-direction roller Db52, D-direction roller Dc53, and D-direction roller Dd54 are all located on the arc with a radius of R, and R is the radius required for tubing guidance. It converges inward from the bell mouth guiding channel, and the outer diameter gap between the innermost B-direction roller Bd34 and D-direction roller Dd54 is the outer diameter of the tubing to be guided.

[0024] In summary, the above are only the preferred embodiments of the present utility model and are not used to limit the scope of implementation of the present utility model. That is, all equivalent changes and modifications made to the content within the scope of the patent application of the present utility model shall fall within the technical scope of the present utility model.

Claims

1. A multi-dimensional guide device for a coal mine injection head, characterized in that: include: Main frame (1); The A-direction roller group (2) comprises a plurality of A-direction rollers, the outer diameters of which are arranged along an arc with a radius R; The B-direction roller group (3) comprises a plurality of B-direction rollers, the outer diameters of which are arranged along an arc with a radius R; The C-direction roller group (4) is symmetrically arranged with the A-direction roller group (2), and comprises a plurality of C-direction rollers, wherein the outer diameters of the C-direction rollers are arranged along an arc with a radius R; The D-direction roller group (5) is symmetrically arranged with the B-direction roller group (3), and comprises a plurality of D-direction rollers, wherein the outer diameters of the D-direction rollers are arranged along an arc with a radius R; Where R is the guide radius of the working oil pipe; The A-direction roller group (2), the B-direction roller group (3), the C-direction roller group (4) and the D-direction roller group (5) are all arranged on the main frame (1) to form a bell-shaped guide channel. The gap between the outer diameters of the A-direction roller and the C-direction roller at the convergent end of the bell-shaped guide channel is the outer diameter of the oil pipe to be guided, and the gap between the outer diameters of the B-direction roller and the D-direction roller at the convergent end of the bell-shaped guide channel is the outer diameter of the oil pipe to be guided.

2. A multi-dimensional guide device for a coal mine injection head according to claim 1, characterized in that: The main frame (1) comprises two symmetrically arranged arc-shaped fan plates (11), the arc-shaped fan plates (11) comprising straight segments and arc segments, the straight segments of the two arc-shaped fan plates (11) being arranged in parallel, the arc segments of the two arc-shaped fan plates (11) being bent outward at the same radius R, the two straight segments being connected via a connecting plate (6), and the two arc segments being connected via a plurality of connecting tubes (7).

3. A multi-dimensional guide device for a coal mine injection head according to claim 2, characterized in that: The A-direction roller group (2) and the C-direction roller group (4) are fixed on the outer side surface of the arc-shaped fan plate (11); a plurality of through holes are correspondingly provided at the positions of the A-direction roller and the C-direction roller on the arc-shaped fan plate (11); the A-direction roller and the C-direction roller extend between the two arc-shaped fan plates (11) through the through holes; and the two ends of the B-direction roller and the D-direction roller are respectively connected to the two arc-shaped fan plates (11).

4. A multi-dimensional guide device for a coal mine injection head according to claim 3, characterized in that: An AC roller mounting seat (12) is arranged on the outer side of the arc-shaped sector plate (11), and the A-direction roller and the C-direction roller are mounted on the AC roller mounting seat (12). BD roller mounting seats (13) are evenly arranged along an arc with a radius R on the symmetry surface of the arc-shaped sector plate (11), and the B-direction roller and the D-direction roller are mounted on the BD roller mounting seats (13).

5. A multi-dimensional guide device for a coal mine injection head according to claim 1, characterized in that: The A-direction roller group (2) comprises: A-direction roller Aa (21), A-direction roller Ab (22), A-direction roller Ac (23), and A-direction roller Ad (24); the C-direction roller group (4) comprises: C-direction roller Ca (41), C-direction roller Cb (42), C-direction roller Cc (43), and C-direction roller Cd (44); the roller outer diameter clearance between the A-direction roller Ad (24) and the C-direction roller Cd (44) is the outer diameter of the oil pipe required for the guide.

6. A multi-dimensional guide device for a coal mine injection head according to claim 1, characterized in that: The B-direction roller group (3) comprises: a B-direction roller Ba (31), a B-direction roller Bb (32), a B-direction roller Bc (33), and a B-direction roller Bd (34); the D-direction roller group (5) comprises: a D-direction roller Da (51), a D-direction roller Db (52), a D-direction roller Dc (53), and a D-direction roller Dd (54); and the roller outer diameter clearance between the B-direction roller Bd (34) and the D-direction roller Dd (54) is the outer diameter of the oil pipe required for the guide.

7. A multi-dimensional guide device for a coal mine injection head according to claim 2, characterized in that: Mounting holes (8) are correspondingly provided on the two arc-shaped fan plates (11).

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