Supporting assembly of fracturing rod for underground hydraulic fracturing of coal mine

Abstract

The utility model discloses a supporting assembly of a fracturing rod for underground hydraulic fracturing of a coal mine, the supporting assembly is suitable for being connected with the fracturing rod of a pushing hole packer in a matched mode, and the supporting assembly comprises a connecting rod, a supporting frame, a locking bolt, a supporting rope body and a distance monitoring piece; the connecting rod is provided with a threaded connecting part and an abutting part, and the threaded connecting part is suitable for being in threaded connection with the fracturing rod; the supporting frame is arranged on the connecting rod in a sleeving mode, at least part of the upper end face of the supporting frame abuts against the lower end face of the abutting part, locking threads are arranged on the supporting frame, and a plurality of fixing lugs are arranged on the peripheral wall of the supporting frame; the locking bolt is in threaded fit with the locking threaded hole to position the position of the connecting rod relative to the support frame; two ends of the supporting rope body are respectively connected with the fixing lugs and the top net; after the supporting assembly is installed, when the change of the vertical distance between the abutting part and the top plate exceeds 50 mm, the distance monitoring piece gives an alarm. According to the supporting assembly, the fracturing rod can be effectively supported, and the hydraulic fracturing operation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine hydraulic fracturing, in particular to a supporting component for a fracturing rod used for underground coal mine hydraulic fracturing. Background Art

[0002] In the related art, during the hydraulic fracturing operation in a coal mine, a drilling rig is usually used to support the fracturing rod that pushes the hole packer, resulting in high operation costs during the application of the hydraulic fracturing technology. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a supporting component for a fracturing rod used for underground coal mine hydraulic fracturing, which has a simple structure, is safe and reliable, can effectively support the fracturing rod, and then changes the current situation of using a drilling rig to support the fracturing rod in the prior art, thereby reducing the waste of resources of the drilling rig and reducing the operation costs during the application of the hydraulic fracturing technology.

[0004] According to an embodiment of the utility model, the supporting component for a fracturing rod used for underground coal mine hydraulic fracturing is adapted to be connected with the fracturing rod for pushing the hole packer in a matching manner to support the fracturing rod. The supporting component includes: a connecting rod, on the axial direction of the connecting rod, one end of the connecting rod is provided with a threaded connection portion, and the threaded connection portion is adapted to be threadedly connected with the fracturing rod. The connecting rod is also provided with a stopping portion, and the stopping portion is sleeved on the side of the connecting rod close to the threaded connection portion. The stopping portion is coaxially arranged with the connecting rod. On a plane perpendicular to the axial direction of the connecting rod, the projection of the connecting rod is located within the projection of the stopping portion; a support frame, the support frame is sleeved on the connecting rod, at least part of the upper end surface of the support frame abuts against the lower end surface of the stopping portion, and the support frame is provided with a locking threaded hole, and the central axis of the locking threaded hole is perpendicular to the central axis of the connecting rod, and the locking threaded hole axially penetrates through the side wall of the support frame; a plurality of fixing ears are arranged at intervals on the outer peripheral wall of the support frame; a locking bolt, the locking bolt is in threaded cooperation with the locking threaded hole to position the relative position of the connecting rod with respect to the support frame; a plurality of support ropes, the support ropes are provided in plurality and are arranged in one-to-one correspondence with the plurality of fixing ears. One end of each support rope is connected to the corresponding fixing ear, and the other end is detachably connected to the top net; a distance monitoring member, the distance monitoring member is arranged on the stopping portion, and the distance monitoring member is used for monitoring the vertical distance between the stopping portion and the roof. When the distance between the stopping portion and the roof changes by more than 50 mm after the installation of the supporting component is completed, the distance monitoring member gives an alarm.

[0005] The supporting component for a fracturing rod used for underground coal mine hydraulic fracturing of the utility model has a simple structure, is safe and reliable, can effectively support the fracturing rod, and then changes the current situation of using a drilling rig to support the fracturing rod in the prior art, thereby reducing the waste of resources of the drilling rig and reducing the operation costs during the application of the hydraulic fracturing technology.

[0006] According to some embodiments of the present utility model, the support frame includes two support plates, and opposite ends of the two support plates are fixedly connected respectively to form a closed-loop structure for sleeving on the connecting rod, and at least a part of the upper end surface of each support plate abuts against the lower end surface of the abutting portion.

[0007] In some embodiments of the present utility model, each support plate is welded to the connecting rod.

[0008] According to some embodiments of the present utility model, first connection portions and second connection portions are respectively provided at two ends of the support rope body, the first connection portion is fixedly connected to the corresponding fixing ear, and the second connection portion is connected to the top net.

[0009] In some embodiments of the present utility model, the fixing ear is formed as a ring, the first connection portion and the second connection portion are respectively formed as metal snap hooks, and the support rope body is snapped onto the corresponding fixing ear through the first connection portion and snapped onto the top net through the second connection portion.

[0010] According to some embodiments of the present utility model, in the axial direction of the connecting rod, the length of the connecting rod is greater than the length of the support frame.

[0011] According to some embodiments of the present utility model, one side of the connecting rod away from the abutting portion is telescopic.

[0012] According to some embodiments of the present utility model, there are multiple locking threaded holes and they are arranged at intervals along the circumferential direction of the connecting rod, and there are multiple locking bolts and they are arranged in one-to-one correspondence with the multiple locking threaded holes.

[0013] According to some embodiments of the present utility model, the support rope body is a steel strand.

[0014] According to some embodiments of the present utility model, the threaded connection portion, the abutting portion and the connecting rod are integrally formed parts.

[0015] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0017] Figure 1 is a schematic diagram of a support assembly supporting a fracturing rod according to some embodiments of the present utility model;

[0018] Figure 2 is a schematic diagram of a connecting rod according to some embodiments of the present utility model;

[0019] Figure 3 It is a partial cross-sectional view of a support assembly according to some embodiments of the present utility model.

[0020] Reference numerals:

[0021] 100, fracturing rod; 200, support assembly; 300, top net;

[0022] 1, connecting rod; 11, threaded connection part; 12, abutting part;

[0023] 2, support frame; 21, locking threaded hole; 22, fixing ear; 23, support plate;

[0024] 3, locking bolt;

[0025] 4, support rope body; 41, first connection part; 42, second connection part;

[0026] 5, distance monitoring member. Detailed implementation manners

[0027] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] The following refers to Figures 1 - 3 Describe the support assembly 200 of the fracturing rod 100 for underground hydraulic fracturing in coal mines according to an embodiment of the present utility model. The support assembly 200 is adapted to be cooperatively connected with the fracturing rod 100 for pushing the hole plugging device to support the fracturing rod 100.

[0031] As Figures 1 - 3 shown, the support assembly 200 of the fracturing rod 100 for underground hydraulic fracturing in coal mines according to an embodiment of the present utility model includes: a connecting rod 1, a support frame 2, a locking bolt 3, a support rope body 4, and a distance monitoring member 5.

[0032] Specifically, in the axial direction of the connecting rod 1, one end of the connecting rod 1 is provided with a threaded connection portion 11, and the threaded connection portion 11 is adapted to be threadedly connected with the fracturing rod 100. The connecting rod 1 is further provided with a stop portion 12, and the stop portion 12 is sleeved on one side of the connecting rod 1 close to the threaded connection portion 11. The stop portion 12 is coaxially arranged with the connecting rod 1. In a plane perpendicular to the axial direction of the connecting rod 1, the projection of the connecting rod 1 is located within the projection of the stop portion 12. It can be seen therefrom that the connecting rod 1 is connected to the fracturing rod 100 through the threaded connection portion 11, and the threaded connection method is simple and reliable, facilitating installation and disassembly.

[0033] The support frame 2 is sleeved on the connecting rod 1. At least part of the upper end surface of the support frame 2 abuts against the lower end surface of the stop portion 12. The support frame 2 is provided with a locking threaded hole 21, and the central axis of the locking threaded hole 21 is perpendicular to the central axis of the connecting rod 1. The locking threaded hole 21 axially penetrates through the side wall of the support frame 2. A plurality of spaced fixed ears 22 are provided on the outer peripheral wall of the support frame 2. The locking bolt 3 is in threaded cooperation with the locking threaded hole 21 to position the connecting rod 1 relative to the support frame 2. It can be seen therefrom that the structural settings of the support frame 2 and the stop portion 12 can support the connecting rod 1 to a certain extent. The settings of the locking bolt 3 and the locking threaded hole 21 can enable the locking bolt 3 to effectively position the position of the connecting rod 1, and can effectively prevent the connecting rod 1 from shaking within the support frame 2.

[0034] There are multiple support ropes 4, which are arranged in one-to-one correspondence with multiple fixing ears 22. One end of each support rope 4 is connected to the corresponding fixing ear 22, and the other end is detachably connected to the top net 300. Since both ends of each support rope 4 are respectively connected to the corresponding fixing ear 22 and the top net 300, it can be further known that the multiple support ropes 4 can lift the fixing ears 22 by connecting to the top net 300, and then lift the support frame 2. The support frame 2 is sleeved on the connecting rod 1, and at least part of the upper end surface of the support frame 2 abuts against the lower end surface of the abutting part 12. Thus, the connecting rod 1 can be effectively lifted and supported. Also, since the connecting rod 1 is connected to the fracturing rod 100 through the threaded connection part 11, it can be known that the support assembly 200 can effectively support the fracturing rod 100, thereby changing the current situation of using a drilling rig to support the fracturing rod 100 in the prior art, reducing the waste of resources of the drilling rig, and reducing the operation cost during the application of the hydraulic fracturing technology.

[0035] The distance monitoring member 5 is arranged on the abutting part 12. The distance monitoring member 5 is used to monitor the vertical distance between the abutting part 12 and the roof. When the vertical distance between the abutting part 12 and the roof changes by more than 50 mm after the support assembly 200 is installed, the distance monitoring member 5 gives an alarm. It can be seen from this that the setting of the distance monitoring member 5 can timely feedback the support effect of the support assembly 200 on the fracturing rod 100 during the hydraulic fracturing operation, making the use of the support assembly 200 safer and more reliable. The alarm can be in the form of emitting sound, emitting light of different colors, or vibrating.

[0036] In summary, it can be known that the support assembly 200 of the embodiment of the present invention can not only effectively support the fracturing rod 100, but also has a simple structure, is safe and reliable.

[0037] The support assembly 200 for the fracturing rod 100 used in underground coal mine hydraulic fracturing of the present invention has a simple structure, is safe and reliable, can effectively support the fracturing rod 100, thereby changing the current situation of using a drilling rig to support the fracturing rod 100 in the prior art, reducing the waste of resources of the drilling rig, and reducing the operation cost during the application of the hydraulic fracturing technology.

[0038] According to some embodiments of the present invention, the support frame 2 includes two support plates 23. The opposite ends of the two support plates 23 are fixedly connected respectively to form a closed-loop structure to be sleeved on the connecting rod 1. At least a part of the upper end surface of each support plate 23 abuts against the lower end surface of the abutting part 12. It can be seen from this that the structure of the support frame 2 is simple and the manufacturing cost is low. At the same time, it can ensure that the upper end surface of the support frame 2 abuts against the lower end surface of the abutting part 12 to support the connecting rod 1.

[0039] In some embodiments of the present utility model, each support plate 23 is welded to the connecting rod 1. Thereby, the reliability of the support frame 2 sleeved on the connecting rod 1 can be ensured. The way that the support frame 2 is sleeved on the connecting rod 1 is simple and reliable.

[0040] According to some embodiments of the present utility model, first connection parts 41 and second connection parts 42 are respectively arranged at two ends of the support rope body 4. The first connection part 41 is fixedly connected to the corresponding fixed ear 22, and the second connection part 42 is connected to the top net 300.

[0041] In some embodiments of the present utility model, the fixed ear 22 is formed as a ring, the first connection part 41 and the second connection part 42 are respectively formed as metal spring buckles, and the support rope body 4 is buckled on the corresponding fixed ear 22 through the first connection part 41 and buckled on the top net 300 through the second connection part 42. It can be seen therefrom that the way that the support rope body 4 is connected to the fixed ear 22 and the top net 300 is simple, reliable, easy to operate and convenient for disassembly.

[0042] According to some embodiments of the present utility model, in the axial direction of the connecting rod 1, the length of the connecting rod 1 is greater than the length of the support frame 2. Thus, when the connecting rod 1 is threadedly connected to the fracturing rod 100, the operator can hold one end of the connecting rod 1 extending out of the support frame 2 for connection, that is, it is convenient for the operator to install and disassemble the connecting rod 1.

[0043] According to some embodiments of the present utility model, one side of the connecting rod 1 away from the abutting part 12 is telescopic. It can be seen therefrom that the length of the connecting rod 1 is adjustable, so that it is not only convenient for the operator to install and disassemble the connecting rod 1, but also convenient for the storage and transportation of the support assembly 200.

[0044] According to some embodiments of the present utility model, there are multiple locking threaded holes 21 which are arranged at intervals along the circumferential direction of the connecting rod 1, and there are multiple locking bolts 3 which are arranged in one-to-one correspondence with the multiple locking threaded holes 21. Thereby, the positioning effect of the locking bolt 3 on the connecting rod 1 can be further improved.

[0045] Specifically, there are two locking threaded holes 21, and the central axes of the two locking threaded holes 21 coincide, and the two locking threaded holes 21 are arranged opposite to each other on the opposite sides of the connecting rod 1. Thereby, the positioning effect of the two locking bolts 3 on the connecting rod 1 can be further improved. The structure of the support assembly 200 is more regular, the force on the connecting rod 1 is more uniform, and thus the structural reliability of the support assembly 200 is improved.

[0046] According to some embodiments of the present utility model, the support rope body 4 is a steel strand. Thereby, the reliability of the support rope body 4 itself can be ensured, and the reliability of the support rope body 4 in lifting and supporting the support frame 2 can be ensured, thereby improving the support effect of the support assembly 200 on the fracturing rod 100. Of course, it should be noted that the support rope body 4 can also be formed into other structural forms, such as a metal chain, as long as the reliability and service life of the support rope body 4 are ensured.

[0047] According to some embodiments of the present utility model, the threaded connection portion 11, the abutting portion 12 and the connecting rod 1 are integrally formed parts. Thereby, the structural strength and reliability of the support assembly 200 can be improved, and at the same time, the production and manufacturing efficiency of the support assembly 200 can be improved.

[0048] According to some embodiments of the present utility model, the abutting portion 12 is formed into a hexagonal nut structure, and the abutting portion 12 is in threaded cooperation with the threaded connection portion 11 to be sleeved on the connecting rod 1. It can be seen from this that the structure of the abutting portion 12 is simple, the source is wide, the cost is low, and it is convenient to replace.

[0049] Other constitutions and operations of the support assembly 200 of the fracturing rod 100 for underground coal mine hydraulic fracturing according to the embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail here.

[0050] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0051] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A support assembly (200) for a fracturing rod (100) used in underground hydraulic fracturing in coal mines, characterized in that, The support assembly (200) is adapted to be cooperatively connected with a fracturing rod (100) for pushing a packer to support the fracturing rod (100), and the support assembly (200) includes: A connecting rod (1). Axially of the connecting rod (1), one end of the connecting rod (1) is provided with a threaded connection portion (11), and the threaded connection portion (11) is adapted to be threadedly connected with the fracturing rod (100). The connecting rod (1) is further provided with a stopping portion (12), and the stopping portion (12) is sleeved on one side of the connecting rod (1) close to the threaded connection portion (11). The stopping portion (12) is coaxially arranged with the connecting rod (1). In a plane perpendicular to the axial direction of the connecting rod (1), the projection of the connecting rod (1) is located within the projection of the stopping portion (12); A support frame (2), and the support frame (2) is sleeved on the connecting rod (1). At least part of the upper end surface of the support frame (2) abuts against the lower end surface of the stopping portion (12). The support frame (2) is provided with a locking threaded hole (21), and the central axis of the locking threaded hole (21) is perpendicular to the central axis of the connecting rod (1). The locking threaded hole (21) axially penetrates through the side wall of the support frame (2); A plurality of spaced fixing ears (22) are provided on the outer peripheral wall of the support frame (2); A locking bolt (3), and the locking bolt (3) is in threaded cooperation with the locking threaded hole (21) to position the connecting rod (1) relative to the support frame (2); Support ropes (4), and there are a plurality of support ropes (4) which are provided in one-to-one correspondence with the plurality of fixing ears (22). One end of each support rope (4) is connected to the corresponding fixing ear (22), and the other end is detachably connected to a top net (300); A distance monitoring member (5), and the distance monitoring member (5) is arranged on the stopping portion (12). The distance monitoring member (5) is used for monitoring the vertical distance between the stopping portion (12) and the roof. When the distance between the stopping portion (12) and the roof changes by more than 50 mm after the support assembly (200) is installed, the distance monitoring member (5) gives an alarm.

2. The support assembly (200) of the fracturing rod (100) for underground coal mine hydraulic fracturing according to claim 1, characterized in that, The support frame (2) includes two support plates (23), and the opposite ends of the two support plates (23) are respectively fixedly connected to form a closed-loop structure to be sleeved on the connecting rod (1). At least a part of the upper end surface of each support plate (23) abuts against the lower end surface of the stopping portion (12).

3. The support assembly (200) of the fracturing rod (100) for underground coal mine hydraulic fracturing according to claim 2, characterized in that, Each support plate (23) is welded to the connecting rod (1).

4. The support assembly (200) of the fracturing rod (100) for underground coal mine hydraulic fracturing according to claim 1, characterized in that, The two ends of each support rope (4) are respectively provided with a first connection portion (41) and a second connection portion (42). The first connection portion (41) is fixedly connected to the corresponding fixing ear (22), and the second connection portion (42) is connected to the top net (300).

5. The support assembly (200) of the fracturing rod (100) for underground hydraulic fracturing in coal mines according to claim 4, characterized in that, The fixed ear (22) is formed in a ring shape, the first connecting portion (41) and the second connecting portion (42) are respectively formed as metal spring buckles, and the support rope body (4) is buckled on the corresponding fixed ear (22) through the first connecting portion (41) and buckled on the top net (300) through the second connecting portion (42).

6. The support assembly (200) of the fracturing rod (100) for underground coal mine hydraulic fracturing according to claim 1, characterized in that, In the axial direction of the connecting rod (1), the length of the connecting rod (1) is greater than the length of the support frame (2).

7. The support assembly (200) of the fracturing rod (100) for underground hydraulic fracturing in coal mines according to claim 1, characterized in that, One side of the connecting rod (1) away from the abutting portion (12) is telescopic.

8. The support assembly (200) of the fracturing rod (100) for underground hydraulic fracturing in coal mines according to claim 1, characterized in that, There are a plurality of the locking threaded holes (21) which are arranged at intervals along the circumferential direction of the connecting rod (1), and a plurality of the locking bolts (3) which are arranged in one-to-one correspondence with the plurality of the locking threaded holes (21).

9. The support assembly (200) of the fracturing rod (100) for underground hydraulic fracturing in coal mines according to claim 1, characterized in that, The support rope body (4) is a steel strand wire.

10. The support assembly (200) of the fracturing rod (100) for underground coal mine hydraulic fracturing according to claim 1, characterized in that, The threaded connecting portion (11), the abutting portion (12) and the connecting rod (1) are integrally formed parts.

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