Hollow-wall shaft pipe

Abstract

The utility model provides a hollow wall wellbore pipe, which relates to the field of hollow wall wellbore pipes and comprises a wellbore pipe body, the wellbore pipe body is composed of an inner cylinder pipe layer and an outer cylinder pipe layer, and the outer surface of the inner cylinder pipe layer is connected with the inner surface of the outer cylinder pipe layer through supporting strips. A hollow inner tube cavity is formed between the inner bobbin layer and the outer bobbin layer, a shaping ring block is fixed to the middle of the supporting strip in a penetrating mode, the outer side end of the shaping ring block is in contact with the inner surface of the outer bobbin layer through a first compression-resistant strip, and the inner side end of the shaping ring block is in contact with the outer surface of the inner bobbin layer through a second compression-resistant strip. The utility model solves the problem that the conventional shaft pipe with a hollow wall is easy to locally sink and scale when being impacted by foreign objects.

Description

Technical Field

[0001] The utility model relates to the field of hollow wall wellbore pipes, in particular to a hollow wall wellbore pipe. Background Art

[0002] A shaft pipe is a profile made of steel plate, formed by cold bending or hot forming, used for storing or transporting materials. It is often used in water wells and mines to prevent underground water from being polluted. The hollow wall of the hollow shaft pipe is formed by multiple groups of vertical bars. However, the existing hollow wall shaft pipe is prone to local depression and scaling when impacted by foreign objects. Utility Model Content

[0003] In order to overcome the defects of the prior art, a hollow wall wellbore pipe is provided to solve the problem that the existing hollow wall wellbore pipe is easily locally sunken and scaled due to the impact of foreign objects.

[0004] To achieve the above object, a hollow wall wellbore pipe is provided, comprising: a wellbore pipe body, wherein the wellbore pipe body is composed of an inner tube layer and an outer tube layer.

[0005] The outer surface of the inner tube layer is connected with the inner surface of the outer tube layer through a support bar, a hollow inner tube cavity is arranged between the inner tube layer and the outer tube layer, a shaping ring block is fixed through the middle of the support bar, the outer end of the shaping ring block is in contact with the inner surface of the outer tube layer through a first anti-pressure bar, and the inner end of the shaping ring block is in contact with the outer surface of the inner tube layer through a second anti-pressure bar.

[0006] Furthermore, the outer tube layer is distributed around the outer side of the inner tube layer; and the inner tube layer and the outer tube layer are made of alloy material by hot pressing and shaping.

[0007] Furthermore, the support bars are distributed in the hollow inner tube cavity in a surrounding manner and at equal intervals; and a first anti-compression bar and a first anti-compression bar are arranged between two adjacent groups of support bars.

[0008] Furthermore, the support bar is composed of two groups of trapezoidal bars symmetrically fitted together, and an annular groove is provided on the fitting surface of the support bar; and a shaping ring block passes through the annular groove.

[0009] Furthermore, the outer surface of the inner tube layer and the inner surface of the outer tube layer are respectively bonded with a second anti-compression strip and a first anti-compression strip made of synthetic rubber.

[0010] Furthermore, the shaping ring blocks are equidistantly distributed around the middle of the hollow inner tube cavity.

[0011] Furthermore, the shaping ring block, the first anti-compression strip and the first anti-compression strip constitute an anti-depression structure of the wellbore pipe body.

[0012] The beneficial effect of the utility model lies in that the hollow wall wellbore pipe of the utility model utilizes a shaping ring block to surround the hollow inner tube cavity inside the wellbore pipe body, and supports the hollow wall of the wellbore pipe through the first and second compression strips inside and outside the shaping ring block, thereby effectively resisting the dents and deformation of the surface of the hollow wall wellbore pipe, facilitating the buffering of the impact force on the inner and outer tube walls of the hollow wall wellbore pipe, and improving the compressive strength of the hollow wall wellbore pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the front cross-sectional structure of the hollow wall shaft pipe according to an embodiment of the utility model.

[0014] Figure 2 It is a schematic diagram of the top-view cross-sectional structure of the hollow wall shaft pipe according to an embodiment of the utility model.

[0015] Figure 3 For the utility model embodiment Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0016] Figure 4 It is a schematic diagram of the top cross-sectional structure of the support bar according to an embodiment of the utility model.

[0017] In the figure: 1, wellbore pipe body; 2, inner tube layer; 3, hollow inner tube cavity; 31, support bar; 32, annular groove; 4, outer tube layer; 5, shaping ring block; 51, first anti-compression bar; 52, second anti-compression bar. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4 As shown, the utility model provides a hollow wall wellbore pipe, comprising: a wellbore pipe body 1, the wellbore pipe body 1 is composed of an inner tube layer 2 and an outer tube layer 4,

[0019] The outer surface of the inner tube layer 2 is connected to the inner surface of the outer tube layer 4 through the support bar 31, and a hollow inner tube cavity 3 is arranged between the inner tube layer 2 and the outer tube layer 4. A shaping ring block 5 is fixed through the middle of the support bar 31, and the outer end of the shaping ring block 5 is in contact with the inner surface of the outer tube layer 4 through the first anti-compression bar 51, and the inner end of the shaping ring block 5 is in contact with the outer surface of the inner tube layer 2 through the second anti-compression bar 52.

[0020] Working principle: The shaping ring block 5 surrounds the hollow inner tube cavity 3 inside the wellbore pipe body 1, and supports the hollow wall of the wellbore pipe through the first anti-compression strip 51 and the second anti-compression strip 52 inside and outside the shaping ring block 5, effectively resisting the dent and deformation of the surface of the hollow wall wellbore pipe, facilitating the buffering of the impact force on the inner and outer walls of the hollow wall wellbore pipe, and improving the compressive strength of the hollow wall wellbore pipe.

[0021] In this embodiment, the outer tube layer 4 is distributed around the outer side of the inner tube layer 2; and the inner tube layer 2 and the outer tube layer 4 are made of alloy material by hot pressing and shaping.

[0022] As a preferred embodiment, the inner tube layer 2 and the outer tube layer 4 made of alloy material have excellent strength and are convenient for conveying gas or liquid.

[0023] In this embodiment, the support bars 31 are equidistantly distributed in the hollow inner tube cavity 3 in a surrounding manner; and a first anti-compression bar 51 and a first anti-compression bar 51 are provided between two adjacent groups of support bars 31 .

[0024] As a preferred embodiment, the gap formed by the support bars 31 forms a hollow inner tube cavity 3, which is convenient for meeting certain tube strength standards while saving costs.

[0025] In this embodiment, the support bar 31 is composed of two groups of trapezoidal bars symmetrically fitted together, and an annular groove 32 is formed on the fitting surface of the support bar 31 ; and a shaping ring block 5 penetrates through the annular groove 32 .

[0026] As a preferred embodiment, two groups of support bars 31 of trapezoidal bar structures facilitate the fixing and distribution of the shaping ring block 5 in the hollow inner tube cavity 3, so as to enhance the strength of the wellbore pipe body 1 of the hollow structure.

[0027] In this embodiment, the outer surface of the inner tube layer 2 and the inner surface of the outer tube layer 4 are respectively bonded with a second anti-compression strip 52 and a first anti-compression strip 51 made of synthetic rubber.

[0028] As a preferred embodiment, the second anti-compression strip 52 and the first anti-compression strip 51 made of synthetic rubber can effectively buffer the external impact force on the wellbore pipe body 1, thereby resisting the deformation of the wellbore pipe body 1.

[0029] In this embodiment, the shaping ring blocks 5 are equidistantly distributed around the middle of the hollow inner tube cavity 3 .

[0030] As a preferred embodiment, the shaping ring block 5 is a steel ring block, which is located in the hollow inner tube cavity 3 to play a supporting and pressure-resistant role.

[0031] In this embodiment, the shaping ring block 5 , the first anti-compression strip 51 and the first anti-compression strip 51 constitute an anti-depression structure of the wellbore pipe body 1 .

[0032] As a preferred embodiment, the anti-sag structure of the wellbore pipe body 1 conveniently and effectively resists the sag and deformation of the surface of the hollow wall wellbore pipe, facilitates buffering the impact force on the inner and outer walls of the hollow wall wellbore pipe, and improves the compressive strength of the hollow wall wellbore pipe.

[0033] The hollow wall wellbore pipe of the utility model can effectively solve the problem that the existing hollow wall wellbore pipes are prone to local depression and scaling due to the impact of foreign objects, effectively resist the depression and deformation of the surface of the hollow wall wellbore pipe, facilitate buffering the impact force on the inner and outer walls of the hollow wall wellbore pipe, improve the compressive strength of the hollow wall wellbore pipe, and is suitable for hollow wall wellbore pipes.

Claims

1. A hollow wall wellbore pipe comprising: A wellbore pipe body (1), the wellbore pipe body (1) consisting of an inner tube layer (2) and an outer tube layer (4), characterized in that: The outer surface of the inner tube layer (2) is connected to the inner surface of the outer tube layer (4) through a support strip (31); a hollow inner tube cavity (3) is provided between the inner tube layer (2) and the outer tube layer (4); a shaping ring block (5) is fixedly passed through the middle of the support strip (31); the outer end of the shaping ring block (5) is in contact with the inner surface of the outer tube layer (4) through a first anti-pressure strip (51); and the inner end of the shaping ring block (5) is in contact with the outer surface of the inner tube layer (2) through a second anti-pressure strip (52).

2. A hollow wall wellbore pipe according to claim 1, characterized in that: The outer tube layer (4) is distributed around the outer side of the inner tube layer (2); and the inner tube layer (2) and the outer tube layer (4) are made of alloy material by hot pressing and shaping.

3. A hollow wall wellbore pipe according to claim 1, characterized in that: The support bars (31) are distributed in a surrounding manner and at equal intervals in the hollow inner tube cavity (3); and a first anti-compression bar (51) and a first anti-compression bar (51) are provided between two adjacent groups of support bars (31).

4. A hollow wall wellbore pipe according to claim 1, characterized in that: The support bar (31) is composed of two groups of trapezoidal bars symmetrically fitted together, and an annular groove (32) is provided on the fitting surface of the support bar (31); and a shaping ring block (5) passes through the annular groove (32).

5. A hollow wall wellbore pipe according to claim 1, characterized in that: The outer surface of the inner tube layer (2) and the inner surface of the outer tube layer (4) are respectively bonded with a second anti-compression strip (52) and a first anti-compression strip (51) made of synthetic rubber.

6. A hollow wall wellbore pipe according to claim 1, characterized in that: The shaping ring blocks (5) are distributed equidistantly around the middle of the hollow inner tube cavity (3).

7. A hollow wall wellbore pipe according to claim 1, characterized in that: The shaping ring block (5), the first anti-compression strip (51) and the first anti-compression strip (51) constitute an anti-sag structure of the wellbore pipe body (1).

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