Novel longitudinal support transverse expansion rock cracking pipe
Technical Field
The utility model belongs to the technical field of rock expansion fracturing equipment, and particularly relates to a novel longitudinal support transverse expansion rock cracking pipe.
Background
The gas fracturing pipe mainly comprises a liquid storage pipe and liquid gas filled in the liquid storage pipe, the liquid gas is heated, gasified and expanded, and then high-pressure gas is quickly released to break rocks or break coal, so that the gas fracturing pipe is widely applied to the technical fields of urban improvement, urban construction, mine exploitation and the like.
In the related art, the liquid storage pipe comprises a plastic pipe body and a steel wire rope embedded in the plastic pipe body, and the steel wire rope and the liquid storage pipe are of an integrated structure which is similar to a hydraulic oil pipe embedded with the steel wire rope. The steel wire rope is arranged along the longitudinal direction of the plastic pipe body and used for increasing the tensile strength of the liquid storage pipe and limiting the liquid storage pipe to expand along the longitudinal direction of the liquid storage pipe. The related art has the disadvantages that the steel wire rope is embedded into the plastic pipe body and the steel wire rope and the plastic pipe body form an integrated structure, the processing and manufacturing cost is high, and because the steel wire rope and the plastic pipe body are of the integrated structure, when the steel wire rope and the plastic pipe body are pulled, if the deformation is asynchronous, the plastic pipe body is easy to crack, the sealing performance is reduced, and the normal use of the plastic pipe body is influenced, so that the requirement on the material of the plastic pipe body is high, enough elasticity must be ensured in performance, and the raw material cost is increased.
Therefore, there is a need to provide a new and novel longitudinal support transverse expansion fractured rock pipe to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
Based on the technical scheme, the utility model provides a novel longitudinal supporting transverse expansion rock cracking pipe, which aims to solve the technical problems that a liquid storage pipe in the prior art is difficult to process and manufacture and has high requirements on materials.
In order to solve the technical problem, the utility model provides a novel longitudinal support transverse expansion rock cracking pipe which comprises a liquid storage pipe with an accommodating cavity, wherein the novel longitudinal support transverse expansion rock cracking pipe also comprises a longitudinal pull rope arranged in the accommodating cavity, two ends of the longitudinal pull rope are respectively fixed at two ends of the liquid storage pipe, and the middle part of the longitudinal pull rope is separated from the inner side wall of the liquid storage pipe.
Preferably, the whole liquid storage pipe is in a circular tube shape, the longitudinal pull cables are multiple, and the longitudinal pull cables are distributed annularly by taking the axis of the liquid storage pipe as the center.
Preferably, the longitudinal cable is a steel wire rope.
Preferably, the reservoir tube is made of a rubber material.
Preferably, the reservoir tube comprises: the upper opening and the lower opening are respectively arranged at two ends of the pipe body, the upper opening is completely covered by the upper plug cover and is fixedly connected with the pipe body, the lower opening is completely covered by the lower plug cover and is fixedly connected with the pipe body, the accommodating cavity is defined by the pipe body, the upper plug cover and the lower plug cover together, 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.
Preferably, the novel longitudinal support transverse expansion rock cracking pipe further comprises a flexible connecting ring, and the connecting ring is sequentially connected with the plurality of longitudinal inhaul cables.
Preferably, the connecting rings are arranged at intervals along the axial direction of the pipe body.
Preferably, the upper plug cover is in threaded connection with the pipe body, and an inflation hole communicated with the accommodating cavity is formed in the upper plug cover.
Preferably, the lower plug cover is in threaded connection with the pipe body.
Compared with the related art, the structure of the liquid storage pipe is improved, and the middle part of the longitudinal inhaul cable is separated from the pipe wall of the liquid storage pipe. Adopt this structure, on the one hand, vertical cable can not restrict the horizontal inflation of liquid storage pipe, and the liquid storage pipe can be followed horizontal free expansion, has guaranteed the split rock ability of split rock pipe. On the other hand, the vertical cable plays the effect of supporting the liquid storage pipe, and when the liquid storage pipe transversely expanded, the vertical cable supported the liquid storage pipe, can restrict the liquid storage pipe length and shorten, guaranteed the effective rock burst length of splitting the rock pipe.
In addition, by adopting the structure of the utility model, the technical problem that the ductility and the flexibility of the liquid storage pipe are influenced because the longitudinal inhaul cable is positioned in the liquid storage pipe can be avoided. The requirements on the rubber liquid storage pipe material and the processing and manufacturing difficulty are reduced, and the forming cost of the product is effectively reduced.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the utility model in any way, and in which:
FIG. 1 is a front view of the structure of a novel longitudinal support transverse expansion fractured rock pipe of the utility model;
FIG. 2 is an enlarged view of a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a front view of another novel longitudinal support transverse expansion split rock pipe structure of the utility model;
fig. 4 is an enlarged view of a sectional view taken along line B-B of fig. 3.
In the figure:
1. the liquid storage device comprises a liquid storage pipe, 2, a longitudinal inhaul cable, 3, a flexible connecting ring, 100, an accommodating cavity, 11, a pipe body, 12, an upper plug cover, 13, a lower plug cover, 111, an upper opening, 112, a lower opening and 121, an inflation hole.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; the two elements may be mechanically or electrically connected, directly or indirectly connected through an intermediate medium, or connected through the inside of the two elements, or "in transmission connection", that is, connected in a power manner through various suitable manners such as belt transmission, gear transmission, or sprocket transmission. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to the attached drawings 1-2, the novel longitudinal supporting transverse expansion rock cracking pipe comprises a liquid storage pipe 1 with an accommodating cavity 100, and further comprises a longitudinal pull rope 2 arranged in the accommodating cavity 100, two ends of the longitudinal pull rope 2 are respectively fixed to two ends of the liquid storage pipe 1, and the middle of the longitudinal pull rope 2 is separated from the inner side wall of the liquid storage pipe 1. The reservoir 1 is made of a rubber material. The liquid storage pipe 1 includes: the accommodating cavity 100 is defined by the pipe body 11, the upper plug cover 12 and the lower plug cover 13 together, 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.
In this embodiment, restrict the liquid storage pipe 1 through vertical cable 2 along vertical inflation, nevertheless can not restrict the liquid storage pipe 1 to the horizontal inflation, consequently, in putting into the liquid storage pipe 1 and sending the fracture hole, when carrying out pressure gas to the liquid storage pipe 1 and filling the dress, the liquid storage pipe 1 is under pressure gas's effect, even its horizontal inflation, the lateral wall of liquid storage pipe 1 also can be supported by the pore wall that causes the fracture hole, avoids liquid storage pipe 1 excessive inflation, guarantees the safety of liquid storage pipe 1 dress process. In addition, when initiating the liquid storage pipe 1, the liquid storage pipe 1 also can be at first to the lateral expansion, makes the bulging force just to the pore wall of causing the cracked hole, and the cracked rock is further guaranteed to the cracked rock effect.
When manufacturing the liquid storage pipe 1, in the vertical cable 2 need not the embedding liquid storage pipe 1, only need be fixed in the both ends (go up gag 12 and lower gag 13) of liquid storage pipe 1 with the both ends of vertical cable 2, the inside wall separation of the middle part of vertical cable 2 and body 11. That is, vertical cable 2 and body 11 are the structure of separation, so, can not influence storage body 11 when vertical cable 2 is pulled, promptly, when can not appear body 11 and vertical cable 2 and pull, because the deformation of body 11 and wire rope is asynchronous, and lead to the problem that body 11 broke. Therefore, the tube 11 can be made of a material with poor elasticity, and the raw material cost of the tube 11 can be greatly reduced.
According to the embodiment of the utility model, the liquid storage pipe 1 is in a circular pipe shape as a whole, the plurality of longitudinal pulling cables 2 are arranged, and the plurality of longitudinal pulling cables 2 are distributed in a ring shape by taking the axis of the liquid storage pipe 1 as the center. This structure facilitates the formation of uniform tension on the inner wall of the liquid storage tube 1.
According to a particular embodiment of the utility model, the longitudinal cables 2 are steel cables. It should be noted that the longitudinal cable 2 may be a cable of other structure than a steel cable, such as a cable made of synthetic fiber.
According to the embodiment of the present invention, the upper plug 12 is screwed with the tube 11, and the lower plug 13 is screwed with the tube 11. The structure is beneficial to split manufacturing and molding.
According to the embodiment of the present invention, the upper plug 12 is provided with an air filling hole 121 communicated with the receiving cavity 100. The inflation hole 121 is used for receiving and fixing an inflation device (such as an inflation valve) to facilitate filling of the liquid storage tube 1 with pressurized gas.
Referring to fig. 3-4, according to the specific embodiment of the present invention, the novel longitudinal support transverse expansion fractured rock pipe further comprises a flexible connection ring 3, and the connection ring is sequentially connected with a plurality of longitudinal pulling cables 2. The connecting rings are a plurality of rings arranged at intervals along the axial direction of the pipe body 11. In this embodiment, the flexible go-between 3 that increases for fixed many vertical cables 2 respectively, flexible go-between 3 and vertical cable 2 whole form cylindrical netted, do benefit to further improvement tensile properties, effectively restrict liquid storage pipe 1 along vertical inflation.
Compared with the related art, the structure of the liquid storage pipe is improved, and the middle part of the longitudinal inhaul cable is separated from the pipe wall of the liquid storage pipe. Adopt this structure, on the one hand, vertical cable can not restrict the horizontal inflation of liquid storage pipe, and the liquid storage pipe can be followed horizontal free expansion, has guaranteed the split rock ability of split rock pipe. On the other hand, the vertical cable plays the effect of supporting the liquid storage pipe, and when the liquid storage pipe transversely expanded, the vertical cable supported the liquid storage pipe, can restrict the liquid storage pipe length and shorten, guaranteed the effective rock burst length of splitting the rock pipe.
In addition, by adopting the structure of the utility model, the technical problem that the ductility and the flexibility of the liquid storage pipe are influenced because the longitudinal inhaul cable is positioned in the liquid storage pipe can be avoided. The requirements on the rubber liquid storage pipe material and the processing and manufacturing difficulty are reduced, and the forming cost of the product is effectively reduced.
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 utility model, and such modifications and variations fall within the scope defined by the appended claims.