A multi-core sealing and limiting straight insertion type screwing butt joint structure for underground coal mine

Abstract

The utility model discloses a kind of multi-core sealing limit straight insertion type screwing butt joint structure for coal mine underground, instrument end probe tube assembly and battery end probe tube assembly of setting axial butt joint;The instrument end probe tube assembly includes first carbon fiber tube, instrument end probe tube first metal piece and instrument end probe tube second metal piece sequentially inserted and set along axial direction, and socket is installed in the non-insertion end portion of instrument end probe tube second metal piece;The battery end probe tube assembly includes battery end probe tube metal piece and second carbon fiber tube sequentially inserted and set along axial direction, and plug is installed in the non-insertion end portion of battery end probe tube metal piece;The plug and socket are inserted and matched.Using this kind of mode can ensure that internal stranded wire phenomenon does not appear when two-section equipment in underground is butted, and after being connected well, it is also not sent into hole measurement that measurement equipment appears flash-off phenomenon when measuring in hole, to finally realize the purpose of stable measurement of measuring equipment in hole in drilling hole.

Description

Technical Field

[0001] This utility model belongs to the field of coal mine underground measuring instrument pushing technology, and relates to a multi-core sealing limit direct insertion screw-tightening docking structure for coal mine underground applications. Background Technology

[0002] Currently, most two-section multi-core measuring instruments used in coal mines employ either threaded connections at both ends or slip ring connections before entering the borehole. The former can lead to internal wire twisting during the rotational connection of the front and rear threads, resulting in power or communication interruptions. The latter can cause intermittent disconnections during measurement, leading to incomplete measurement data. Utility Model Content

[0003] This utility model provides a multi-core sealing and limiting direct insertion screw-tightening docking structure for use in underground coal mines, which solves the shortcomings of existing underground measuring instruments, such as internal wire twisting when the front and rear threads are rotated, which leads to internal power supply or communication interruption, or unstable connection and intermittent disconnection of the equipment in the hole during measurement, resulting in incomplete measurement data of the equipment in the hole.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A multi-core sealing and limiting direct insertion screw-tightening docking structure for underground coal mines, comprising an instrument end probe assembly and a battery end probe assembly with axial docking.

[0006] The instrument end probe assembly includes a first carbon fiber tube, a first metal part of the instrument end probe, and a second metal part of the instrument end probe, which are sequentially inserted along the axial direction. A socket is installed at the non-insertion end of the second metal part of the instrument end probe.

[0007] The battery end probe assembly includes a battery end probe metal part and a second carbon fiber tube that are sequentially inserted along the axial direction, and a plug is installed at the non-inserted end of the battery end probe metal part.

[0008] The plug and socket are connected and mated.

[0009] Optionally, a recessed limiting groove is provided on the wall of the socket mounting end of the second metal part of the instrument probe.

[0010] A protruding limiting ridge is provided on the tube wall of the plug mounting end of the metal part of the battery end probe, and the protruding limiting ridge and the recessed limiting groove are inserted and limited together.

[0011] Optionally, a rotating component is also fitted outside the instrument end probe assembly, and the rotating component connects the docked instrument end probe assembly and battery end probe assembly by means of a threaded connection.

[0012] Optionally, the first carbon fiber tube and the first metal part of the instrument end probe are formed by carbon fiber winding using a mold.

[0013] The metal part of the battery end probe and the second carbon fiber tube are formed by carbon fiber winding using a mold.

[0014] Optionally, the second metal component of the instrument probe includes a first carbon fiber tube connecting end and a socket insertion end connected in sequence, wherein the outer diameter of the first carbon fiber tube connecting end is smaller than the outer diameter of the socket insertion end.

[0015] Optionally, the outer wall of the first carbon fiber tube connection end is provided with a plurality of first sealing ring grooves;

[0016] Multiple second sealing ring grooves are provided around the outer wall of the socket plug end;

[0017] Sealing rings are installed in both the first and second sealing grooves.

[0018] Optionally, a socket flange mounting position is recessed into the end face of the socket plug-in end, and multiple socket screw mounting positions are embedded in the socket flange mounting position.

[0019] Optionally, the battery end probe metal part includes a plug insertion end and a second carbon fiber tube connection end that are axially mated together.

[0020] The end of the plug is threaded with an external thread, and the outer diameter of this section is similar to that of the second carbon fiber tube, but smaller than that of the section without external threads.

[0021] Optionally, a plug flange mounting position is recessed at the end of the plug connector, and multiple plug screw mounting positions are embedded in the plug flange mounting position.

[0022] Optionally, the socket is fixed by a socket mounting flange and socket screws installed on the non-plug end of the second metal part of the instrument probe;

[0023] The plug is secured by a plug mounting flange and plug screws installed on the non-plug end of the metal part of the battery probe.

[0024] Compared with the prior art, the advantages and effects of this utility model are as follows:

[0025] This utility model adopts a multi-core sealing and limiting direct-insertion screw-tightening docking structure design. The instrument-end probe's rear metal component and the carbon fiber tube are formed by carbon fiber winding using a mold, creating the instrument-end outer tube assembly. Similarly, the battery-end probe's front metal component and the carbon fiber tube are formed by carbon fiber winding using a mold, creating the battery-end outer tube assembly. Sealing rings are inserted into the corresponding sealing grooves of the instrument-end probe's rear metal threaded connector. This method ensures both sealing performance and the tensile and bending strength of the measuring equipment's outer tube. The left end of the multi-core sealing and limiting direct-insertion screw-tightening docking structure is assembled with the multi-core sealing and limiting direct-insertion screw-tightening connector. The right end of the plug-in screw-tightening docking structure is horizontally aligned, and the two ends are inserted through the protruding limiting ridge and the recessed limiting groove. The external connecting threads on the outer surface of the metal part at the front end of the battery probe and the internal screw-tightening connecting threads on the inner surface of the rotating part in the middle of the probe are screwed together to form a multi-core sealed limiting direct plug-in screw-tightening docking overall structure in coal mines. This method can ensure that there will be no internal twisting when the two-section equipment is docked in the mine, and that the measuring equipment will not break down when it is sent into the hole for measurement after connection. This ultimately achieves the goal of stable measurement of the measuring equipment in the borehole. Furthermore, the multi-core sealing and limiting direct-insertion screw-tightening docking structure for underground coal mines of this utility model is applicable in actual underground coal mine roadways for connection or secondary re-testing after drilling, thus broadening the application scope of this utility model in underground coal mines. The multi-core sealing and limiting direct-insertion screw-tightening docking structure for coal mine drilling of this utility model has strong overall seismic resistance, excellent and stable connection performance, and does not have problems such as disengagement, water leakage, or poor connection between the front and rear ends. Attached Figure Description

[0026] The accompanying drawings are provided to further understand the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof.

[0027] Figure 1 This is the assembly drawing of the multi-core sealing and limiting direct insertion screw-tightening docking structure for underground coal mines according to this utility model. The lower figure is the front view and the upper figure is the sectional view of AA.

[0028] Figure 2 for Figure 1 Cross-sectional view of the instrument end probe assembly structure;

[0029] Figure 3 for Figure 2 The diagram shows the structure of the second metal component of the instrument end probe. The lower right is the front view, the lower left is the left view, and the upper right is the sectional view of AA.

[0030] Figure 4 for Figure 1 Cross-sectional view of the battery end probe assembly structure;

[0031] Figure 5 for Figure 4 The schematic diagram of the metal component of the battery end probe is shown in the figure. The lower left is the front view, the lower right is the right view, and the upper left is the cross-sectional view of AA.

[0032] Figure label:

[0033] 1-First carbon fiber tube, 2-First metal part of instrument end probe, 3-Rotating part, 4-Second metal part of instrument end probe, 41-First sealing ring groove, 42-Second sealing ring groove, 43-First carbon fiber tube connecting end, 44-Socket insertion end, 45-Socket screw mounting position, 46-Socket flange mounting position, 47-Recessed limiting wide groove, 5-Battery end probe metal part, 51-Plug insertion end, 52-Second carbon fiber tube connecting end, 511-Protruding limiting wide ridge, 512-External thread, 513-Plug flange mounting position, 514-Plug screw mounting position, 6-Second carbon fiber tube, 7-Socket, 71-Socket screw, 72-Socket mounting flange, 8-Plug, 81-Plug screw, 82-Plug mounting flange. Detailed Implementation

[0034] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0035] In this disclosure, "axial direction" refers to the axial direction in which the intermediate shaft assembly or the two-shaft assembly is located. In this disclosure, "upper", "lower", "left" and "right" refer to the orientation shown in the figure. "Top", "bottom" and "side" refer to the top, bottom and perimeter of the figure, respectively. Unless otherwise specified, the above provisions apply to all contents of this disclosure.

[0036] Combination Figure 1-5The multi-core sealing and limiting direct insertion screw-tightening docking structure disclosed in this utility model solves the shortcomings of existing underground measuring instruments, such as internal wire twisting when the front and rear threads are rotated, which leads to internal power supply or communication interruption, or unstable connection and intermittent disconnection of the equipment in the hole during measurement, resulting in incomplete measurement data of the equipment in the hole. This utility model horizontally aligns the left end molecular assembly and the right end molecular assembly of the multi-core sealed limiting direct insertion screw-tightening docking structure. The two ends are inserted and connected by the protruding limiting wide ridge and the recessed limiting wide groove. The external connecting threads designed on the outer surface of the metal part at the front end of the battery probe and the internal tightening connecting threads designed on the inner surface of the rotating part in the middle of the probe are screwed together to form the overall structure of the multi-core sealed limiting direct insertion screw-tightening docking structure in coal mines. This method can ensure that there will be no internal wire twisting when the two-section equipment is docked in the mine, and that the measuring equipment will not break down when it is sent into the hole for measurement after connection. Thus, the goal of stable measurement of the measuring equipment in the borehole is finally achieved.

[0037] Specifically, this utility model's multi-core sealed limiting direct-insertion screw-tightening docking structure for underground coal mines includes an axially connected instrument end probe assembly and a battery end probe assembly. The instrument end probe assembly includes a first carbon fiber tube 1, a first metal part 2 of the instrument end probe, and a second metal part 4 of the instrument end probe, all sequentially inserted along the axial direction. A socket 7 is installed at the non-insertion end of the second metal part 4. The battery end probe assembly includes a battery end probe metal part 5 and a second carbon fiber tube 6, all sequentially inserted along the axial direction. A plug 8 is installed at the non-insertion end of the battery end probe metal part 5. The plug 8 and socket 7 are inserted and mated. This multi-core sealed limiting direct-insertion screw-tightening docking structure design is applicable in actual underground coal mine roadways for connection or secondary re-testing after drilling, broadening the application scope of this utility model in underground coal mines. The multi-core sealed limiting direct-insertion screw-tightening docking structure for coal mine drilling of this utility model has strong overall seismic resistance, superior and stable connection performance, and does not exhibit phenomena such as disengagement, leakage, or unfavorable connection between the front and rear ends.

[0038] In the embodiments of this disclosure, a recessed limiting groove 47 is provided on the wall of the socket mounting end of the second metal part 4 of the instrument end probe; a protruding limiting ridge 511 is provided on the wall of the plug mounting end of the metal part 5 of the battery end probe, and the protruding limiting ridge 511 and the recessed limiting groove 47 are inserted and limited together. The instrument end probe assembly and the battery end probe assembly are horizontally aligned, and the two ends are inserted and connected by the protruding limiting ridge 511 and the recessed limiting groove 47. This method can ensure that there is no internal twisting phenomenon when the two-section downhole equipment is connected, and that there is no flickering phenomenon when the measuring equipment is sent into the hole for measurement after connection, thereby ultimately achieving the purpose of stable measurement of the drilling measuring equipment in the hole.

[0039] In the embodiments of this disclosure, a rotating component 3 is also sleeved outside the instrument-end probe assembly. The rotating component 3 connects the instrument-end probe assembly and the battery-end probe assembly by means of a threaded connection. The external thread 512 designed on the outer surface of the metal part 5 of the battery-end probe is screwed into the internal thread designed on the inner surface of the rotating component 3 in the middle of the probe, forming a multi-core sealed limiting direct insertion screw-tightening overall structure for underground coal mines. This method can ensure that there will be no internal twisting phenomenon when the two-section equipment is connected underground, and that there will be no flashing phenomenon when the measuring equipment is sent into the hole for measurement after connection, thereby ultimately achieving the purpose of stable measurement of the borehole measuring equipment.

[0040] In the embodiments of this disclosure, the first carbon fiber tube 1 and the first metal part 2 of the instrument end probe are formed by carbon fiber winding using a mold; the metal part 5 of the battery end probe and the second carbon fiber tube 6 are formed by carbon fiber winding using a mold. This ensures the integrity and lightweight of the tube structure and facilitates processing.

[0041] In the embodiments of this disclosure, the second metal part 4 of the instrument end probe includes a first carbon fiber tube connecting end 43 and a socket insertion end 44 connected in sequence. The outer diameter of the first carbon fiber tube connecting end 43 is smaller than the outer diameter of the socket insertion end 44. The first metal part 2 of the instrument end probe is also inserted into the first carbon fiber tube connecting end 43. Then, the entire component is prepared on the first metal part 2 of the instrument end probe using a mold carbon fiber winding molding technology. This can increase the service life of the second metal part 4 of the instrument end probe and also enable the mass production of a universal component consisting of the first metal part 2 of the instrument end probe and the first carbon fiber tube 1.

[0042] In the embodiments of this disclosure, the outer wall of the first carbon fiber tube connection end 43 is provided with a plurality of first sealing ring grooves 41; the outer wall of the socket insertion end 44 is provided with a plurality of second sealing ring grooves 42; sealing rings are installed in both the first sealing grooves 41 and the second sealing grooves 42. By installing the sealing rings into the corresponding sealing ring grooves, this method can ensure both sealing performance and the tensile and bending strength of the outer tube of the measuring equipment.

[0043] In the embodiments of this disclosure, a socket flange mounting position 46 is recessed into the end face of the socket plug end 44, and a plurality of socket screw mounting positions 45 are embedded in the socket flange mounting position 46. Installation via flange and screws offers strong versatility and ease of operation.

[0044] In the embodiments of this disclosure, the battery end probe metal part 5 includes a plug insertion end 51 and a second carbon fiber tube connection end 52 that are axially mated together. A section of the plug insertion end 51 is provided with an external thread 512, and the outer diameter of this section is approximately equal to the outer diameter of the second carbon fiber tube 6, but smaller than the outer diameter of the section without external threads. The external thread 512 at the end of the plug insertion end 51 is used for threaded connection with the rotating part 3, axially limiting the two insertion components. Its smaller outer diameter compared to the subsequent section without external threads allows for axial limiting of the rotating part 3.

[0045] In the embodiments of this disclosure, a plug flange mounting position 513 is recessed at the end of the plug insertion terminal 51, and a plurality of plug screw mounting positions 514 are embedded in the plug flange mounting position 513. Installation via flange and screws offers strong versatility and ease of operation.

[0046] In the embodiments of this disclosure, the socket 7 is fixed by a socket mounting flange 72 and a socket screw 71 installed on the non-plug end of the second metal part 4 of the instrument probe; the plug 8 is fixed by a plug mounting flange 82 and a plug screw 81 installed on the non-plug end of the metal part 5 of the battery probe. The flange and screw installation method offers strong versatility and ease of operation.

[0047] This invention ensures that no internal wire twisting occurs during the docking of two-section underground equipment, and that no intermittent breakage occurs during measurement inside the borehole after connection, thus achieving stable measurement within the borehole. Furthermore, the multi-core sealing and limiting direct-insertion screw-tightening docking structure for coal mines is applicable in actual underground coal mine roadway connections or secondary re-measurement after borehole drilling, broadening its application scope in coal mines. The multi-core sealing and limiting direct-insertion screw-tightening docking structure for coal mine drilling exhibits strong overall seismic resistance, superior and stable connection performance, and eliminates issues such as disengagement, leakage, or poor connection between the front and rear sections. After the structure is formed, the assembly structure is first placed on a simulated vibration table for seismic testing, then a 150N push rod tensile test is conducted on a tensile testing table, and finally a 3MPa water pressure test is conducted in a pressure well. Only after ensuring that there is no loosening after the vibration, no loosening of the intermediate connecting threads, and no water leakage in the overall structure can this multi-core sealing limit straight-insertion screw-tightening docking structure be used to connect and connect to downhole drilling measurement equipment.

[0048] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0049] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0050] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A multi-core sealing and limiting straight insertion and screwing butt joint structure in a coal mine underground, characterized in that, Set up axially connected instrument end probe assembly and battery end probe assembly; The instrument end probe assembly includes a first carbon fiber tube (1), an instrument end probe first metal part (2), and an instrument end probe second metal part (4) that are sequentially inserted along the axial direction, and a socket (7) is installed at the non-insertion end of the instrument end probe second metal part (4); The battery end probe assembly includes a battery end probe metal part (5) and a second carbon fiber tube (6) that are sequentially inserted along the axial direction, and a plug (8) is installed at the non-insertion end of the battery end probe metal part (5); The plug (8) and socket (7) are connected and engaged.

2. The coal mine underground multi-core sealing and limiting straight insertion type screwing butt joint structure according to claim 1, characterized in that, A recessed limiting groove (47) is provided on the wall of the socket mounting end of the second metal part (4) of the instrument end probe; A protruding limiting ridge (511) is provided on the tube wall of the plug mounting end of the metal part (5) of the battery end probe. The protruding limiting ridge (511) and the recessed limiting groove (47) are inserted and limited together.

3. The coal mine underground multi-core sealing and limiting straight insertion and screwing butt joint structure according to claim 1 or 2, characterized in that, A rotating component (3) is also fitted outside the instrument end probe assembly. The rotating component (3) connects the docked instrument end probe assembly and battery end probe assembly by means of a threaded connection.

4. The coal mine underground multi-core sealing and limiting straight insertion and screwing butt joint structure according to claim 1 or 2, characterized in that, The first carbon fiber tube (1) and the first metal part (2) of the instrument end probe are formed by carbon fiber winding using a mold; The metal part (5) of the battery end probe and the second carbon fiber tube (6) are formed by carbon fiber winding using a mold.

5. The coal mine underground multi-core sealing and limiting straight insertion and screwing butt joint structure according to claim 1 or 2, characterized in that, The instrument end probe second metal part (4) includes a first carbon fiber tube connecting end (43) and a socket plug-in end (44) connected in sequence. The outer diameter of the first carbon fiber tube connecting end (43) is smaller than the outer diameter of the socket plug-in end (44).

6. The coal mine underground multi-core sealing and limiting straight-plug screwing butt joint structure according to claim 5, characterized in that, The outer wall of the first carbon fiber tube connecting end (43) is provided with multiple first sealing ring grooves (41); The outer wall of the socket plug end (44) is provided with multiple second sealing ring grooves (42); Sealing rings are installed in both the first sealing groove (41) and the second sealing groove (42).

7. The coal mine underground multi-core sealing and limiting straight-plug screwing butt joint structure according to claim 5, characterized in that, The socket plug end (44) is recessed into the end face of the socket flange mounting position (46), and multiple socket screw mounting positions (45) are embedded in the socket flange mounting position (46).

8. The coal mine underground multi-core sealing and limiting straight-plug screwing butt joint structure according to claim 1 or 2, characterized in that, The battery end probe metal part (5) includes a plug insertion end (51) and a second carbon fiber tube connection end (52) that are axially mated together. The end of the plug connector (51) is provided with an external thread (512), and the outer diameter of this part is equivalent to the outer diameter of the second carbon fiber tube (6), which is smaller than the outer diameter of the tube section without external thread.

9. The coal mine underground multi-core sealing and limiting straight-plug screwing butt joint structure according to claim 8, characterized in that, The plug insertion end (51) is recessed to provide a plug flange mounting position (513), and multiple plug screw mounting positions (514) are embedded in the plug flange mounting position (513).

10. The coal mine underground multi-core sealing and limiting straight-plug screwing butt joint structure according to claim 1 or 2, characterized in that, The socket (7) is fixed by a socket mounting flange (72) and socket screws (71) installed on the non-plug end of the second metal part (4) of the instrument end probe; The plug (8) is secured by a plug mounting flange (82) and a plug screw (81) installed on the non-plug end of the battery probe metal part (5).

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