A new type of longitudinally supported transversely expanded cracked rock pipe

Abstract

The present invention belongs to the technical field of rock expansion fracturing equipment, and discloses a new type of longitudinally supported transversely expanded rock cracking pipe, including a liquid storage pipe with a receiving cavity, wherein the new type of longitudinally supported transversely expanded rock cracking pipe also includes a longitudinal cable arranged in the receiving cavity, the two ends of the longitudinal cable are respectively fixed to the two ends of the liquid storage pipe, and the middle part of the longitudinal cable is separated from the inner wall of the liquid storage pipe. Compared with the related art, the present invention improves the structure of the liquid storage pipe, and separates the middle part of the longitudinal cable from the wall of the liquid storage pipe. With this structure, on the one hand, the longitudinal cable will not limit the transverse expansion of the liquid storage pipe, and the liquid storage pipe can expand freely in the transverse direction, thereby ensuring the rock cracking ability of the rock cracking pipe. On the other hand, the longitudinal cable plays a role in supporting the liquid storage pipe. When the liquid storage pipe expands transversely, the longitudinal cable supports the liquid storage pipe, which can limit the shortening of the length of the liquid storage pipe and ensure the effective rock cracking length of the rock cracking pipe.

Description

Technical Field

[0001] The invention belongs to the technical field of rock expansion fracturing equipment, and in particular relates to a novel longitudinally supported transversely expanding rock fracturing pipe. Background Art

[0002] The gas fracturing tube mainly includes a liquid storage tube and liquid gas filled in the liquid storage tube. It utilizes the liquid gas to vaporize and expand when heated, and then quickly releases high-pressure gas to achieve the purpose of breaking rocks or falling coal. It is widely used in technical fields such as urban renewal, urban construction and mining.

[0003] In the related art, the liquid storage tube includes a plastic tube body and a steel wire rope embedded in the plastic tube body. The steel wire rope and the liquid storage tube are an integrated structure, which is similar to a hydraulic oil pipe embedded with a steel wire rope. The steel wire rope is arranged along the longitudinal direction of the plastic tube body to increase the tensile strength of the liquid storage tube and limit the expansion of the liquid storage tube along its longitudinal direction. The disadvantage of the related art is that the steel wire rope is embedded in the plastic tube body and the two form an integrated structure, which has a high processing and manufacturing cost. In addition, because the steel wire rope and the plastic tube body are an integrated structure, when the two are pulled, if the deformation is not synchronized, the plastic tube body is prone to tearing, which reduces its sealing performance and affects its normal use. Therefore, the material requirements for the plastic tube body are high, and sufficient elasticity must be guaranteed in terms of performance, which increases the cost of raw materials.

[0004] Therefore, it is necessary to provide a new type of longitudinally supported transversely expanded cracked rock pipe to solve the above technical problems. Summary of the invention

[0005] Based on this, the present invention proposes a novel longitudinally supported transversely expanded rock-fracture pipe, which aims to solve the technical problems in the prior art of liquid storage pipes being difficult to process and having high requirements on materials.

[0006] In order to solve the above technical problems, the present invention proposes a new type of longitudinally supported transversely expandable rock cracking pipe, including a liquid storage tube with a receiving cavity, wherein the new type of longitudinally supported transversely expandable rock cracking pipe also includes a longitudinal cable arranged in the receiving cavity, and the two ends of the longitudinal cable are respectively fixed to the two ends of the liquid storage tube, and the middle part of the longitudinal cable is separated from the inner wall of the liquid storage tube.

[0007] Preferably, the liquid storage tube is in the shape of a circular tube as a whole, and there are multiple longitudinal cables, which are distributed in a ring shape with the axis of the liquid storage tube as the center.

[0008] Preferably, the longitudinal cable is a steel wire rope.

[0009] Preferably, the material is made of rubber.

[0010] Preferably, the liquid storage tube includes: a tube body, an upper plug cover and a lower plug cover, the tube body is provided with an upper opening and a lower opening at both ends respectively, the upper plug cover completely covers the upper opening and is fixedly connected to the tube body, the lower plug cover completely covers the lower opening and is fixedly connected to the tube body, the receiving cavity is jointly surrounded by the tube body, the upper plug cover and the lower plug cover, one end of the longitudinal cable is fixed to the upper plug cover, and the other end of the longitudinal cable is fixed to the lower plug cover.

[0011] Preferably, the novel longitudinally supported transversely expanded fractured rock pipe further comprises a flexible connecting ring, and the connecting ring sequentially connects a plurality of the longitudinal cables.

[0012] Preferably, the connecting rings are multiple and spaced apart along the axial direction of the tube body.

[0013] Preferably, the longitudinal cable is a steel wire rope.

[0014] Preferably, the upper plug cover and the tube body are threadedly connected, and the upper plug cover is provided with an inflation hole communicating with the accommodating cavity.

[0015] Preferably, the lower plug cover and the tube body are threadedly connected.

[0016] Compared with the related art, the present invention improves the structure of the liquid storage tube, and separates the middle part of the longitudinal cable from the wall of the liquid storage tube. With this structure, on the one hand, the longitudinal cable will not limit the lateral expansion of the liquid storage tube, and the liquid storage tube can expand freely in the lateral direction, thereby ensuring the rock-breaking ability of the rock-breaking tube. On the other hand, the longitudinal cable plays a role in supporting the liquid storage tube. When the liquid storage tube expands in the lateral direction, the longitudinal cable supports the liquid storage tube, which can limit the shortening of the length of the liquid storage tube and ensure the effective rock-breaking length of the rock-breaking tube.

[0017] In addition, the structure of the present invention can avoid the technical problem that the longitudinal cable is in the liquid storage tube and affects the ductility and elasticity of the liquid storage tube, reduce the material requirements and processing difficulty of the rubber liquid storage tube, and effectively reduce the molding cost of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the present invention in any way. In the accompanying drawings:

[0019] Figure 1 This is a structural front view of a novel longitudinally supported transversely expanded rock fracture pipe according to the present invention;

[0020] Figure 2 For along Figure 1 An enlarged view of the cross-sectional view along line AA;

[0021] Figure 3This is a structural front view of another novel longitudinally supported transversely expanded rock fracture pipe of the present invention;

[0022] Figure 4 For along Figure 3 Enlarged view of the cross-sectional view along line BB.

[0023] In the figure:

[0024] 1. Liquid storage tube, 2. Longitudinal pull rope, 3. Flexible connecting ring, 100. Receiving cavity, 11. Tube body, 12. Upper plug cover, 13. Lower plug cover, 111. Upper opening, 112. Lower opening, 121. Inflation hole. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements, or it can be a "transmission connection", that is, a power connection through various appropriate methods such as belt drive, gear drive or sprocket drive. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See attached Figure 1-2 A novel longitudinally supported transversely expanded cracked rock pipe includes a liquid storage pipe 1 with a receiving chamber 100. The novel longitudinally supported transversely expanded cracked rock pipe of the present invention also includes a longitudinal cable 2 arranged in the receiving chamber 100. The two ends of the longitudinal cable 2 are respectively fixed to the two ends of the liquid storage pipe 1, and the middle part of the longitudinal cable 2 is separated from the inner wall of the liquid storage pipe 1. The liquid storage pipe 1 is made of rubber material. The liquid storage pipe 1 includes: a tube body 11, an upper plug cover 12 and a lower plug cover 13. The two ends of the tube body 11 are respectively provided with an upper opening 111 and a lower opening 112. The upper plug cover 12 completely covers the upper opening 111 and is fixedly connected to the tube body 11. The lower plug cover 13 completely covers the lower opening 112 and is fixedly connected to the tube body 11. The receiving chamber 100 is surrounded by the tube body 11, the upper plug cover 12 and the lower plug cover 13. One end of the longitudinal cable 2 is fixed to the upper plug cover 12, and the other end of the longitudinal cable 2 is fixed to the lower plug cover 13.

[0028] In this embodiment, the longitudinal cable 2 is used to limit the expansion of the liquid storage tube 1 in the longitudinal direction, but the lateral expansion of the liquid storage tube 1 is not limited. Therefore, when the liquid storage tube 1 is placed in the fracture hole and the liquid storage tube 1 is filled with pressurized gas, the liquid storage tube 1 will be supported by the hole wall of the fracture hole under the action of the pressurized gas, even if it expands in the lateral direction, the side wall of the liquid storage tube 1 will be supported by the hole wall of the fracture hole, thereby avoiding excessive expansion of the liquid storage tube 1 and ensuring the safety of the filling process of the liquid storage tube 1. In addition, when the liquid storage tube 1 is triggered, the liquid storage tube 1 will first expand in the lateral direction, so that the expansion force is directly against the hole wall of the fracture hole, cracking the rock, and further ensuring the rock cracking effect.

[0029] When manufacturing the liquid storage tube 1, the longitudinal cable 2 does not need to be embedded in the liquid storage tube 1. It is only necessary to fix the two ends of the longitudinal cable 2 to the two ends of the liquid storage tube 1 (the upper plug cover 12 and the lower plug cover 13), and the middle of the longitudinal cable 2 is separated from the inner wall of the tube body 11. That is, the longitudinal cable 2 and the tube body 11 are separated structures. In this way, the longitudinal cable 2 will not affect the storage tube body 11 when it is pulled, that is, when the tube body 11 and the longitudinal cable 2 are pulled, the deformation of the tube body 11 and the wire rope is not synchronized, which will cause the tube body 11 to be torn. Therefore, the tube body 11 can be made of a material with poor elasticity, which can greatly reduce the raw material cost of the tube body 11.

[0030] According to a specific embodiment of the present invention, the liquid storage tube 1 is in the shape of a circular tube, and there are multiple longitudinal cables 2, which are distributed in a ring shape with the axis of the liquid storage tube 1 as the center. This structure is conducive to forming a uniform tension on the inner wall of the liquid storage tube 1.

[0031] According to a specific embodiment of the present invention, the longitudinal cable 2 is a steel wire rope. It should be noted that the longitudinal cable 2 can be a rope of other structures besides a steel wire rope, such as a cable made of synthetic fiber.

[0032] According to a specific embodiment of the present invention, the upper plug cover 12 and the tube body 11 are connected by threads, and the lower plug cover 13 and the tube body 11 are connected by threads. This structure is conducive to separate production and molding.

[0033] According to a specific embodiment of the present invention, the upper plug cover 12 is provided with an air filling hole 121 communicating with the receiving chamber 100. The air filling hole 121 is used to receive and fix an air filling device (such as an air filling valve) to facilitate filling the liquid storage tube 1 with pressurized gas.

[0034] See attached Figure 3-4According to a specific embodiment of the present invention, a novel longitudinally supported transversely expanded rock cracking pipe of the present invention further includes a flexible connecting ring 3, which sequentially connects a plurality of longitudinal cables 2. The connecting rings are multiple longitudinal cables 2 arranged at intervals along the axial direction of the pipe body 11. The longitudinal cables 2 are steel wire ropes. In this embodiment, the additional flexible connecting ring 3 is used to fix the plurality of longitudinal cables 2 respectively, and the flexible connecting ring 3 and the longitudinal cables 2 form a cylindrical mesh as a whole, which is conducive to further improving the tensile performance and effectively limiting the expansion of the liquid storage pipe 1 in the longitudinal direction.

[0035] Compared with the related art, the present invention improves the structure of the liquid storage tube, and separates the middle part of the longitudinal cable from the wall of the liquid storage tube. With this structure, on the one hand, the longitudinal cable will not limit the lateral expansion of the liquid storage tube, and the liquid storage tube can expand freely in the lateral direction, thereby ensuring the rock-breaking ability of the rock-breaking tube. On the other hand, the longitudinal cable plays a role in supporting the liquid storage tube. When the liquid storage tube expands in the lateral direction, the longitudinal cable supports the liquid storage tube, which can limit the shortening of the length of the liquid storage tube and ensure the effective rock-breaking length of the rock-breaking tube.

[0036] In addition, the structure of the present invention can avoid the technical problem that the longitudinal cable is in the liquid storage tube and affects the ductility and elasticity of the liquid storage tube, reduce the material requirements and processing difficulty of the rubber liquid storage tube, and effectively reduce the molding cost of the product.

[0037] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A novel longitudinally supported transversely expanded rock fracture pipe, comprising a liquid storage pipe with a receiving cavity, characterized in that: The novel longitudinally supported transversely expanded cracked rock pipe further comprises a longitudinal cable arranged in the receiving cavity, the two ends of the longitudinal cable are respectively fixed to the two ends of the liquid storage tube, and the middle part of the longitudinal cable is separated from the inner side wall of the liquid storage tube; The liquid storage tube is in the shape of a circular tube as a whole, and there are a plurality of longitudinal cables, and the plurality of longitudinal cables are distributed in a ring shape with the axis of the liquid storage tube as the center; The novel longitudinally supported transversely expanded fractured rock pipe further comprises a flexible connecting ring, which sequentially connects a plurality of the longitudinal cables.

2. The novel longitudinally supported transversely expanded rock fracture pipe according to claim 1 is characterized in that: The longitudinal cable is a steel wire rope.

3. The novel longitudinally supported transversely expanded rock fracture pipe according to claim 2 is characterized in that: The liquid storage tube is made of rubber material.

4. The novel longitudinally supported transversely expanded rock fracture pipe according to claim 3 is characterized in that: The liquid storage tube includes: a tube body, an upper plug cover and a lower plug cover, the two ends of the tube body are respectively provided with an upper opening and a lower opening, the upper plug cover completely covers the upper opening and is fixedly connected to the tube body, the lower plug cover completely covers the lower opening and is fixedly connected to the tube body, the receiving cavity is surrounded by the tube body, the upper plug cover and the lower plug cover, one end of the longitudinal cable is fixed to the upper plug cover, and the other end of the longitudinal cable is fixed to the lower plug cover.

5. The novel longitudinally supported transversely expanded rock fracture pipe according to claim 4 is characterized in that: The connecting rings are multiple and spaced apart along the axial direction of the tube body.

6. The novel longitudinally supported transversely expanded rock fracture pipe according to claim 4 is characterized in that: The upper plug cover and the tube body are threadedly connected, and the upper plug cover is provided with an inflation hole communicating with the receiving cavity.

7. The novel longitudinally supported transversely expanded fractured rock pipe according to claim 4 is characterized in that: The lower plug cover and the tube body are threadedly connected.

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