Safe and light type gas fracturing pipe group

Abstract

The utility model relates to a safe and light type gas fracturing pipe set, and relates to the technical field of mining equipment, the safe and light type gas fracturing pipe set comprises a plurality of gas fracturing pipe bodies and a plurality of detonating leads, the number of the detonating leads is two on each gas fracturing pipe body, one end of each detonating lead is fixedly connected to the corresponding gas fracturing pipe body, and the other end of each detonating lead is fixedly connected to the corresponding gas fracturing pipe body. A limiting block is arranged at the upper end of the gas fracturing pipe body and tightly presses the section, close to the gas fracturing pipe body, of the detonating lead to the upper end of the gas fracturing pipe body. A limiting block is arranged at the upper end of the gas fracturing pipe body, a limiting assembly used for fixing the limiting block to the upper end of the gas fracturing pipe body is arranged between the limiting block and the gas fracturing pipe body, the detonating leads are wound around the limiting block, and a winding mechanism used for winding the two detonating leads is arranged above the limiting block. The fracturing pipe has the effect that the situation that the joint of the detonating lead and the top of the fracturing pipe is fractured is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of mining equipment, and in particular to a safe and lightweight gas fracturing pipe group. Background Art

[0002] The gas fracturing pipe group is a new blasting technology used to replace traditional explosive blasting, mainly composed of several gas fracturing pipes connected in series in sequence. The gas fracturing pipe includes components such as an outer pipe, an inner pipe, a detonating wire, and an electro-ignition head. The outer pipe is a straight cylindrical pressure-resistant plastic pipe body, with end caps fixed at both ends, and a circular tubular metal interface is penetrated through the end caps. The inner pipe is a straight cylindrical paper tube, with a high-pressure combustion-promoting pyrotechnic agent placed inside, and plugs are provided at both ends. The detonating wire penetrates through the inner pipe, and after passing through the plugs at both ends respectively, it is fixed on the metal interface and electrically connected to the electro-ignition head. The gas fracturing pipe uses ordinary air and pyrotechnic agent to ignite and blast, and uses the powerful thrust of the gas to complete the blasting operation. The pyrotechnic agent is not an inflammable and explosive item under normal pressure, and each component of the fracturing pipe is a common item, with low cost and simple assembly, and it is not easy to explode during the operation process, greatly improving the safety.

[0003] During the use of the fracturing pipe, it is usually necessary to pre-drill holes on the ground to be blasted in advance, and then the workers need to lift the fracturing pipe and place it in the hole. When the fracturing pipe is lowered to a certain height in the hole, the workers need to pull the detonating wire and continue to lower the fracturing pipe. However, in the related art, the detonating wire is usually directly fixed to the top of the fracturing pipe. Therefore, pulling the detonating wire to lower it will cause a large force at the connection between the detonating wire and the top of the fracturing pipe, and thus it is easy for the connection between the detonating wire and the top of the fracturing pipe to break or be damaged, thereby affecting the use safety of the fracturing pipe. Summary of the Utility Model

[0004] In order to reduce the occurrence of breakage at the connection between the detonating wire and the top of the fracturing pipe, the present application provides a safe and lightweight gas fracturing pipe group.

[0005] The safe and lightweight gas fracturing pipe group provided by the present application adopts the following technical solutions:

[0006] A safe and lightweight gas fracturing pipe group includes a plurality of gas fracturing pipe bodies and a plurality of detonating wires. Two detonating wires are provided on each gas fracturing pipe body, and one end of each detonating wire is fixedly connected to the gas fracturing pipe body. A limiting block is provided at the upper end of the gas fracturing pipe body. The limiting block presses a section of the detonating wire close to the gas fracturing pipe body against the upper end of the gas fracturing pipe body. A limiting component for fixing the limiting block to the upper end of the gas fracturing pipe body is provided between the limiting block and the gas fracturing pipe body. The detonating wire bypasses the limiting block, and a winding mechanism for winding the two detonating wires is provided above the limiting block.

[0007] By adopting the above technical solution, the shape of the detonating wire when the gas fracturing tube body is lifted up by the detonating wire can be changed through the limit block. Therefore, when lifted up, the detonating wire can abut against the limit block, thereby reducing the force transmitted to the connection between the detonating wire and the gas fracturing tube body, thereby reducing the possibility of breakage or breakage at the connection between the two, thereby improving the safety of the fracturing tube.

[0008] Optionally, the limiting assembly includes a plurality of locking bolts, and the locking bolts are threadedly connected to the limiting block and the gas fracturing tube body at the same time.

[0009] By adopting the above technical solution, the rod of the locking bolt can be separated from the gas fracturing tube body or threadedly connected to the gas fracturing tube body by rotating the locking bolt, thereby realizing the removal and fixation of the locking bolt on the gas fracturing tube body.

[0010] Optionally, the winding mechanism includes a limiting wheel, a section of the detonating wire is wound around the limiting wheel, and the winding mechanism also includes a fixing component for mounting the limiting wheel on the gas fracturing tube body.

[0011] By adopting the above technical solution, a section of the detonating wire can be wound around the limiting wheel. Therefore, when the detonating wire is subjected to a pulling force, most of the force transmitted to the connection between the detonating wire and the gas fracturing tube body can be unloaded through the limiting wheel, thereby reducing the possibility of breakage or crushing at the connection between the two.

[0012] Optionally, a limiting groove is provided at one end of the limiting block close to the gas fracturing tube body, the limiting groove corresponds to the detonating wire one by one and a section of the detonating wire is placed in the limiting groove.

[0013] By adopting the above technical solution, the position of the detonating wire can be limited by the limiting groove, and at the same time, the pressure of the limiting block on the detonating wire can be reduced.

[0014] Optionally, an elastic rubber block is fixedly connected to the bottom of the limiting groove.

[0015] By adopting the above technical solution, the friction between the detonating wire and the bottom of the limiting groove can be reduced by the elastic rubber block, which can play a protective role for the detonating wire.

[0016] Optionally, the fixing assembly includes a protective shell, the protective shell is fixedly connected to the gas fracturing tube body, the limiting wheel is rotatably connected in the protective shell, and an outlet tube is passed through and fixedly connected to one end of the protective shell away from the gas fracturing tube body, and the detonating wire is passed through the outlet tube.

[0017] By adopting the above technical solution, the limiting wheel can be fixed by the protective housing while the detonation wire can be protected.

[0018] Optionally, a limiting ring is fixedly connected inside the protective housing. The limiting ring is fixedly connected inside the protective housing, coaxially arranged with the wire outlet pipe and located between the wire outlet pipe and the limiting wheel. The detonation wire passes through the limiting ring.

[0019] By adopting the above technical solution, the two detonation wires can be limited inside the protective housing by the limiting ring, reducing the occurrence of disorder inside.

[0020] Optionally, the protective housing is made of stainless steel.

[0021] By adopting the above technical solution, the protective housing made of stainless steel has a certain strength and strong corrosion resistance.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The force transmitted to the connection between the detonation wire and the gas fracturing tube body can be reduced, thereby reducing the occurrence of fracture or breakage at the connection between the two, and thus improving the use safety of the fracturing tube;

[0024] 2. One section of the detonation wire can be wound around the limiting wheel. Thus, when the detonation wire is subjected to a pulling force, most of the force transmitted to the connection between the detonation wire and the gas fracturing tube body can be removed through the limiting wheel, thereby reducing the occurrence of fracture or breakage at the connection between the two;

[0025] 3. The two detonation wires are limited inside the protective housing by the limiting ring, reducing the occurrence of disorder inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application;

[0027] Figure 2 is a schematic diagram of the structure of the limiting wheel of an embodiment of the present application;

[0028] Figure 3 is a schematic diagram of the structure of the elastic rubber block of an embodiment of the present application.

[0029] In the figure, 1, gas fracturing tube body; 2, detonation wire; 3, limiting block; 31, limiting groove; 32, elastic rubber block; 4, limiting component; 41, locking bolt; 5, winding mechanism; 51, limiting wheel; 52, fixing component; 521, protective housing; 522, wire outlet pipe; 6, limiting ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following will further elaborate on this application in conjunction with the attached Figure 1 - attached Figure 3 drawings, for a more detailed description of this application.

[0031] An embodiment of this application is: a safe and lightweight gas fracturing tube group. Referring to Figure 1 , it includes a plurality of gas fracturing tube bodies 1 and a plurality of detonation wires 2. Only one is drawn in this embodiment. Two detonation wires 2 are provided on each gas fracturing tube body 1, and one end of the detonation wire 2 is fixedly connected to the gas fracturing tube body 1.

[0032] Referring to Figure 1 , Figure 2 and Figure 3 , a limiting block 3 is provided at the upper end of the gas fracturing tube body 1. The limiting block 3 is cylindrical. A limiting groove 31 is opened at one end of the limiting block 3 close to the gas fracturing tube body 1. Two limiting grooves 31 are provided and are communicated with the arc-shaped side wall of the limiting block 3. An elastic rubber block 32 is fixedly connected to the bottom of each limiting groove 31. The limiting groove 31 corresponds to the detonation wire 2 one by one, and a section of the detonation wire 2 is placed in the limiting groove 31 and abuts against the elastic rubber block 32. A limiting component 4 is provided between the limiting block 3 and the gas fracturing tube body 1 for fixing the limiting block 3 at the upper end of the gas fracturing tube body 1.

[0033] The limiting component 4 includes a plurality of locking bolts 41. In this embodiment, two locking bolts 41 are provided. The locking bolts 41 are threadedly connected to the limiting block 3, and the rod part of the locking bolt 41 passes through the limiting block 3 and is threadedly connected to the gas fracturing tube body 1. Thus, the limiting block 3 is fixed at the upper end of the gas fracturing tube body 1, and the limiting block 3 presses a section of the detonation wire 2 close to the gas fracturing tube body 1 against the upper end of the gas fracturing tube body 1.

[0034] Above the limiting block 3, there is a winding mechanism 5 for winding two detonation wires 2. The winding mechanism 5 includes a limiting wheel 51, and the axis of the limiting wheel 51 is perpendicular to the axis of the limiting block 3. A section of the detonation wire 2 is wound around the limiting wheel 51. The winding mechanism 5 further includes a fixing component 52 for installing the limiting wheel 51 on the gas fracturing tube body 1.

[0035] The fixing component 52 includes a protective shell 521, and the protective shell 521 is made of stainless steel. The lower end of the protective shell 521 is fixedly connected to the limiting block 3, and the protective shell 521 is fixed at the upper end of the gas fracturing tube body 1 through the limiting block 3. The limiting wheel 51 is rotatably connected to the inside of the protective shell 521 through its own rotating shaft. A wire outlet pipe 522 is penetrated and fixedly connected to one end of the protective shell 521 away from the gas fracturing tube body 1, and the detonation wire 2 is penetrated through the wire outlet pipe 522.

[0036] Meanwhile, in order to reduce the situation where the two detonation wires 2 are disordered inside the protective housing 521, a limiting ring 6 is fixedly connected inside the protective housing 521. The limiting ring 6 is fixedly connected inside the protective housing 521. The limiting ring 6 is coaxially arranged with the wire outlet pipe 522 and is located between the wire outlet pipe 522 and the limiting wheel 51. The detonation wire 2 is threaded through the limiting ring 6.

[0037] The implementation principle of the embodiment of the present application is as follows: When the gas fracturing pipe body 1 is lifted by the detonation wire 2, since one section of the detonation wire 2 is wound around the limiting wheel 51, when the detonation wire 2 is subjected to a pulling force, most of the force transmitted to the connection between the detonation wire 2 and the gas fracturing pipe body 1 can be removed through the limiting wheel 51. Subsequently, the shape of the detonation wire 2 when the gas fracturing pipe body 1 is lifted by the detonation wire 2 can be changed through the limiting block 3. Furthermore, when lifting, the detonation wire 2 can reduce the force transmitted to the connection between the detonation wire 2 and the gas fracturing pipe body 1 due to abutting against the limiting block 3.

[0038] The embodiments of the present specific implementation manners are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A safe and portable gas fracturing tube set, comprising a plurality of gas fracturing tube bodies (1) and a plurality of detonating wires (2), wherein two detonating wires (2) are arranged on each of the gas fracturing tube bodies (1) and one end of the detonating wires (2) is fixedly connected to the gas fracturing tube body (1), characterized in that: A limit block (3) is provided at the upper end of the gas fracturing tube body (1), and the limit block (3) presses a section of the detonating wire (2) close to the gas fracturing tube body (1) against the upper end of the gas fracturing tube body (1). A limit assembly (4) for fixing the limit block (3) to the upper end of the gas fracturing tube body (1) is provided between the limit block (3) and the gas fracturing tube body (1), and the detonating wire (2) bypasses the limit block (3). A winding mechanism (5) for winding the two detonating wires (2) is provided above the limit block (3).

2. A safe and portable gas fracturing tube assembly according to claim 1, characterized in that: The limiting assembly (4) comprises a plurality of locking bolts (41), and the locking bolts (41) are threadedly connected to the limiting block (3) and the gas fracturing pipe body (1) at the same time.

3. A safe and portable gas fracturing tube set according to claim 1, characterized in that: The winding mechanism (5) comprises a limiting wheel (51), a section of the detonating wire (2) is wound around the limiting wheel (51), and the winding mechanism (5) further comprises a fixing component (52) for mounting the limiting wheel (51) on the gas fracturing tube body (1).

4. A safe and portable gas fracturing tube set according to claim 1, characterized in that: A limiting groove (31) is formed at one end of the limiting block (3) close to the gas fracturing tube body (1); the limiting groove (31) corresponds to the detonating wire (2) one by one, and a section of the detonating wire (2) is placed in the limiting groove (31).

5. A safe and portable gas fracturing tube set according to claim 4, characterized in that: An elastic rubber block (32) is fixedly connected to the bottom of the limiting groove (31).

6. A safe and portable gas fracturing tube set according to claim 3, characterized in that: The fixing assembly (52) comprises a protective shell (521), the limiting wheel (51) is rotatably connected in the protective shell (521), the protective shell (521) is fixedly connected to the gas fracturing tube body (1), an outlet pipe (522) is passed through and fixedly connected to one end of the protective shell (521) away from the gas fracturing tube body (1), and the detonating wire (2) is passed through the outlet pipe (522).

7. A safe and portable gas fracturing tube set according to claim 6, characterized in that: A limiting ring (6) is fixedly connected inside the protective shell (521), the limiting ring (6) is fixedly connected inside the protective shell (521), the limiting ring (6) is coaxially arranged with the outlet pipe (522) and is located between the outlet pipe (522) and the limiting wheel (51), and the detonating wire (2) is inserted into the limiting ring (6).

8. A safe and portable gas fracturing tube set according to claim 6, characterized in that: The protective shell (521) is made of stainless steel.

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