Sheath and pipe

Abstract

The embodiment of the utility model provides a sheath and a pipeline, relates to the technical field of pipeline protection, and improves the smashing resistance of the pipeline. A tube cavity with two open ends is defined by the sheath, the sheath comprises a plurality of via holes, and the via holes penetrate through the sheath in the radial direction of the sheath. The protective sleeve provides physical protection for the pipeline base body, direct damage to the pipeline base body caused by external impact, smashing damage and the like is reduced, and therefore the smashing resistance of the pipeline is improved. In addition, the through holes serve as fixing points, the sheath and the pipeline base body are fixed together, and the stability of the pipeline is improved.

Description

Technical Field

[0001] This application relates to the field of pipeline protection technology, and more particularly to a sheath and a pipeline. Background Technology

[0002] In certain application scenarios, a section of the pipeline cannot be buried underground, and there is a risk that falling rocks from a height could directly hit the surface of the pipeline, causing damage or even puncture.

[0003] Therefore, improving the impact resistance of pipelines has become an urgent problem to be solved. Utility Model Content

[0004] This application provides a sheath and a pipe, designed to protect the pipe substrate, reduce impact damage to the pipe substrate, and improve the pipe's impact resistance.

[0005] An embodiment of the first aspect of this application provides a sheath that encloses a cavity with openings at both ends. The sheath includes a plurality of through holes that penetrate the sheath radially.

[0006] In conjunction with the first aspect, in some implementations of the first aspect, the sheath includes a main body and a splicing part, wherein the splicing part is connected to the two opposite ends of the main body in the circumferential direction.

[0007] In conjunction with the first aspect, in some implementations of the first aspect, the splicing part includes a flexible part and a rigid part stacked radially along the sheath, the rigid part being located on the side of the flexible part closer to the outer wall of the sheath, and the hardness of the rigid part being greater than that of the flexible part.

[0008] In conjunction with the first aspect, in some implementations of the first aspect, multiple vias are arranged at equal distances in the circumferential direction of the sheath with a first distance, and multiple vias are arranged at equal distances in the axial direction of the sheath with a second distance.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the material of the sheath includes alloy steel containing Mn13 or X120Mn12.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, the orthographic projection of the sheath in the axial direction includes an annulus.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the wall thickness of the sheath is greater than or equal to 8 mm and less than or equal to 25 mm.

[0012] An embodiment of the second aspect of this application provides a pipe, the pipe including a pipe base and a sheath provided in any of the above embodiments, the pipe base being located within the cavity of the sheath.

[0013] In conjunction with the second aspect, in some implementations of the second aspect, the pipeline also includes a connecting portion that fills a through hole in the sheath, and the inner wall of the sheath is connected to the outer wall of the pipeline body through the connecting portion.

[0014] In conjunction with the second aspect, in some implementations of the second aspect, the difference between the inner diameter of the sheath and the outer diameter of the pipe base is greater than 0 mm and less than or equal to 5 mm.

[0015] This application provides a sheath that encloses a cavity open at both ends. The sheath includes multiple through holes that penetrate the sheath radially. The sheath provides physical protection for the pipe substrate, reducing direct damage to the pipe substrate from external impacts and crushing, thereby improving the pipe's impact resistance. Furthermore, the through holes serve as fixing points, securing the sheath and the pipe substrate together, thus improving the pipe's stability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 The diagram shown is a cross-sectional view of the sheath provided in an embodiment of this application.

[0018] Figure 2 The image shown is a three-dimensional model diagram of the pipeline provided in an embodiment of this application.

[0019] Figure 3 The diagram shown is a cross-sectional view of the splicing section provided in an embodiment of this application.

[0020] Figure 4 The diagram shown is a cross-sectional view of the connection portion provided in an embodiment of this application.

[0021] Explanation of reference numerals in the attached figures:

[0022] Sheath 1; cavity 2; through hole 3; main body 11; splicing part 12; flexible part 121; rigid part 122; pipe 4; pipe base 41; connecting part 42; bottom layer 421; top layer 422. Detailed Implementation

[0023] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0025] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0026] To protect the pipe substrate and improve the pipe's impact resistance, this application provides a sheath and a pipe. The following will describe various embodiments of the sheath and the pipe in conjunction with the accompanying drawings.

[0027] Figure 1 The diagram shown is a cross-sectional view of the sheath provided in an embodiment of this application. Figure 2 The image shown is a three-dimensional model diagram of a pipeline provided in an embodiment of this application. (Combined with...) Figure 1 and Figure 2 An embodiment of the first aspect of this application provides a sheath 1, which encloses a cavity 2 with openings at both ends. The sheath 1 includes a plurality of through holes 3, which penetrate the sheath 1 radially.

[0028] refer to Figure 1 and Figure 2The sheath 1 can be a hollow cylindrical structure with openings at both ends, which can enclose the pipe base 41. The sheath 1 can provide physical protection and reduce direct damage to the pipe base 41 from external impacts, crushing, etc.

[0029] In some embodiments, the material of the sheath 1 typically has high hardness and toughness, enabling it to absorb and disperse external impact forces, thereby improving the impact resistance of the pipe 4. The sheath 1 can also prevent wear on the pipe base 41 caused by friction, extending the service life of the pipe base 41.

[0030] The sheath 1 has multiple through holes 3 (holes) that penetrate the sheath 1 radially (from the outer surface to the inner surface). These through holes 3 can serve as fixing points, securing the sheath 1 to the pipe base 41 via welding, bolts, rivets, or other fasteners, thus improving overall stability. Furthermore, the through holes 3 facilitate internal inspection and maintenance, ensuring the good condition of the pipe base 41 and allowing for timely detection and handling of potential problems.

[0031] Of course, for other shapes of pipe base 41, such as elliptical pipe base 41, the sheath 1 can also be a hollow elliptical structure, as long as the shape of the sheath 1 matches the shape of the pipe base 41.

[0032] refer to Figure 1 In conjunction with the first aspect, in some implementations of the first aspect, the sheath 1 includes a main body 11 and a splicing part 12, wherein the splicing part 12 is connected to the two opposite ends of the main body 11 in the circumferential direction at opposite ends.

[0033] The main body 11 is the main part of the sheath 1, and is typically a hollow cylindrical structure used to enclose the pipe base 41. The main body 11 provides physical protection, reducing direct damage to the pipe base 41 from external impacts, crushing, etc. The splice 12 is the part that connects the two opposite ends of the main body 11 in the circumferential direction.

[0034] In practical applications, by adjusting the size of the main body 11, the sheath 1 can adapt to pipe bases 41 of different diameters, thus enhancing its versatility.

[0035] In some embodiments, the splice 12 can be formed by welding in the gap between two opposite ends of the main body 11 in the circumferential direction.

[0036] refer to Figures 1 to 3 In conjunction with the first aspect, in some implementations of the first aspect, the splicing part 12 includes a flexible part 121 and a rigid part 122 stacked radially along the sheath 1. The rigid part 122 is located on the side of the flexible part 121 near the outer wall of the sheath 1, and the hardness of the rigid part 122 is greater than the hardness of the flexible part 121.

[0037] The flexible part 121 is the more resilient section of the splicing part 12, and can be made of, for example, 308L stainless steel welding material. The flexible part 121 not only fits tightly against the surface of the pipe base 41, providing excellent sealing performance and preventing moisture, dust, and other impurities from entering the pipe cavity 2, but also absorbs and disperses external impacts and vibrations, reducing direct impact on the pipe base 41 and protecting it from damage. The flexible part 121 can adapt to minor changes in the diameter of the pipe base 41, ensuring a tight fit between the sheath 1 and the pipe base 41.

[0038] The rigid part 122 is the more rigid portion of the splicing part 12, and can be made, for example, from D707 stainless steel welding rods. The rigid part 122 provides the necessary structural strength and rigidity, ensuring that the splicing part 12 will not deform or be damaged when subjected to external impacts. The high hardness and strength of the rigid part 122 effectively resists external impact damage, improving the overall impact resistance of the sheath 1.

[0039] refer to Figure 2 In conjunction with the first aspect, in some implementations of the first aspect, multiple vias 3 are arranged at equal distances in the circumferential direction of the sheath 1 with a first distance, and multiple vias 3 are arranged at equal distances in the axial direction of the sheath 1 with a second distance.

[0040] In some embodiments, the first distance and the second distance may be equal.

[0041] Multiple vias 3 are arranged at equal intervals along the circumference of the sheath 1 with a first distance, that is, multiple vias 3 are evenly distributed with a fixed spacing (first distance) along the circumference of the sheath 1. Multiple vias 3 are also arranged at equal intervals along the axial direction of the sheath 1 with a second distance, that is, multiple vias 3 are evenly distributed with a fixed spacing (second distance) along the axial direction of the sheath 1.

[0042] The evenly distributed vias 3 help to disperse external impact forces and avoid damage caused by concentrated stress in a certain area. The evenly distributed vias 3 make the overall structure of the sheath 1 more balanced and reduce stress concentration that may be caused by uneven distribution. The evenly distributed vias 3 provide more fixing points, improve the connection stability between the sheath 1 and the pipe base 41, and ensure that the sheath 1 will not loosen or fall off.

[0043] In conjunction with the first aspect, in some implementations of the first aspect, the material of the sheath 1 includes alloy steel containing Mn13 or X120Mn12.

[0044] In Mn13, the 13 refers to the 13% mass percentage of Mn. In X120Mn12, the X signifies ultra-high carbon content, 120 indicates that carbon accounts for 1.2% of the mass, and 12 indicates that Mn accounts for 12% of the mass.

[0045] The sheath material 1 provided in this application embodiment has a single-phase austenitic structure at room temperature and has good toughness. Under high impact load, a high-hardness hardened layer will be generated on its surface, thereby resisting impact wear and protecting the pipe substrate 41 from external impacts. It has strong impact resistance.

[0046] Specifically, in the embodiments of this application, the material of the sheath 1 is selected as Mn13 high manganese steel or X120Mn12 high manganese steel. Before being impacted and during the processing and forming process, the microstructure of these two metal materials is austenitic, and their hardness is usually around 200HB. They have the characteristics of low hardness, high toughness, and good processing performance, which can be easily deformed to complete operations such as rolling and tube making, and the processing difficulty is low.

[0047] After being impacted by falling rocks, the surfaces of the two materials undergo a phase transformation, changing from austenite to martensite. After the phase transformation, their hardness will be significantly increased, typically reaching 550HB to 650HB. This significantly improves the wear resistance of the sheath 1 surface, further enhancing its resistance to impact wear. It also provides good corrosion resistance, offering longer-lasting protection in harsh environments.

[0048] In summary, by making the sheath 1 from alloy steel containing Mn13 or X120Mn12, it is possible to make the sheath 1 have good impact resistance, wear resistance and corrosion resistance while keeping the sheath 1 easy to process.

[0049] refer to Figure 1 and Figure 2 In conjunction with the first aspect, in some implementations of the first aspect, the orthographic projection of the sheath 1 in the axial direction includes an annulus.

[0050] In practical applications, the pipe base 41 is usually cylindrical. In order to adapt to the common pipe base 41 shape, this application embodiment provides a sheath 1 with an annular projection pattern in the axial direction, that is, a hollow cylindrical structure, which is suitable for the pipe base 41 commonly used in industrial pipeline systems.

[0051] In conjunction with the first aspect, in some implementations of the first aspect, the wall thickness of the sheath 1 is greater than or equal to 8 mm and less than or equal to 25 mm.

[0052] The wall thickness of the sheath 1 refers to the distance from the outer surface to the inner surface, ranging from 8 mm to 25 mm. The thicker wall provides greater structural strength, enabling the sheath 1 to withstand greater external pressure and impact, further improving the impact resistance of the pipe base 41. The thicker wall also enhances the overall durability of the sheath 1, extending its service life and reducing the need for frequent replacements.

[0053] refer to Figure 2 The second aspect of this application provides a pipe 4, which includes a pipe base 41 and a sheath 1 provided in any of the above embodiments. The pipe base 41 is located within the cavity 2 of the sheath 1. Therefore, the pipe 4 provided in the second aspect of this application has similar beneficial effects to the sheath 1 in the first aspect of the application. The sheath 1 protects the pipe base 41, reduces damage to the pipe base 41, and improves the impact resistance of the pipe base 41.

[0054] Figure 4 The diagram shown is a cross-sectional view of the connection portion provided in an embodiment of this application. Figure 1 , Figure 2 , Figure 4 As shown, in conjunction with the second aspect, in some implementations of the second aspect, the pipe 4 further includes a connecting part 42, which fills the through hole 3 of the sheath 1, and the inner wall of the sheath 1 is connected to the outer wall of the pipe base 41 through the connecting part 42.

[0055] In some embodiments, the connection portion 42 includes a base layer 421 and a cover layer 422 stacked radially along the pipe 4. The cover layer 422 is located on the side of the base layer 421 facing away from the pipe substrate 41, and the hardness of the cover layer 422 is greater than that of the base layer 421.

[0056] The underlayer 421 is a relatively tough film layer in the connecting part 42, and can be made of 308L stainless steel welding material, for example. The beneficial effects of the underlayer 421 are similar to those of the flexible part 121 in the above embodiment. The welding method used for the underlayer 421 can be gas shielded welding to improve welding quality and welding efficiency. The cover layer 422 is the harder part of the connecting part 42, and can be made of D707 stainless steel welding rod, for example. The beneficial effects of the cover layer 422 are similar to those of the rigid part 122 in the above embodiment. The welding method used for the cover layer 422 can be arc welding to improve processing efficiency and reduce processing costs.

[0057] It is understood that this application embodiment uses the example of both the splicing part 12 and the connecting part 42 having a two-layer structure for illustration. However, it should be understood that this application is not limited to this. Depending on the welding process, pipe size, strength requirements, and other parameters, the splicing part 12 and the connecting part 42 may also include three or more welded layers. The newly added welded layers may be located between the flexible part 121 and the rigid part 122 and / or between the underlayer 421 and the cover layer 422.

[0058] In some embodiments, the connection portion 42 can be formed by welding within the through hole 3.

[0059] In this embodiment, the connection part 42 is used to connect the sheath 1 and the pipe base 41, reducing the phenomenon of loosening or shaking of the sheath 1.

[0060] In conjunction with the second aspect, in some implementations of the second aspect, the difference between the inner diameter of the sheath 1 and the outer diameter of the pipe base 41 is greater than 0 mm and less than or equal to 5 mm, which facilitates the fitting of the sheath 1 onto the pipe base 41 and also facilitates the fit between the sheath 1 and the pipe base 41, ensuring the effectiveness of the connection between the sheath 1 and the pipe base 41 by the inner connection part 42 of the through hole 3.

[0061] The embodiments described above are not exhaustive and do not limit the invention to specific examples. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A sheath characterized by, The sheath encloses a lumen open at both ends, and comprises a plurality of through holes penetrating the sheath in a radial direction of the sheath.

2. The sheath of claim 1, wherein, The sheath comprises a main body portion and a splicing portion, and the splicing portion is connected to opposite ends of the main body portion in a circumferential direction.

3. The sheath of claim 2, wherein, The splicing portion comprises a flexible portion and a rigid portion stacked in a radial direction of the sheath, and the rigid portion is located on a side of the flexible portion close to an outer wall of the sheath, and the rigidity of the rigid portion is greater than the rigidity of the flexible portion.

4. The sheath of claim 1, wherein, The plurality of through holes are arranged equidistantly at a first distance in a circumferential direction of the sheath, and the plurality of through holes are arranged equidistantly at a second distance in an axial direction of the sheath.

5. The sheath of claim 1, wherein, The material of the sheath comprises alloy steel containing Mn13 or X120Mn12.

6. The sheath of claim 1, wherein, The sheath comprises a circular ring in an axial projection.

7. The sheath of any one of claims 1-6, wherein, The wall thickness of the sheath is greater than or equal to 8 mm and less than or equal to 25 mm.

8. A pipe, characterized in that Comprise: A pipeline base body; The sheath of any one of claims 1 to 7, wherein the pipeline base body is located in the lumen of the sheath.

9. The pipe of claim 8, wherein, The pipeline further comprises a connecting portion, and the connecting portion fills the through hole of the sheath, and the inner wall of the sheath is connected to the outer wall of the pipeline base body through the connecting portion.

10. The pipe of claim 8, wherein, The difference between the inner diameter of the sheath and the outer diameter of the pipeline base body is greater than 0 mm and less than or equal to 5 mm.

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