Pipeline protection device

Abstract

The utility model relates to the technical field of pipeline protection, in particular to a pipeline protection device. The pipeline protection device comprises a protection pipe and a first buffer assembly. The protection pipe is arranged on the outer wall of the pipeline, and a gap is formed between the protection pipe and the outer wall of the pipeline. The first buffering assembly is arranged on the inner wall of the protection pipe and located in the gap, the first buffering assembly comprises a limiting part, a first buffering part and a first elastic part, the limiting part is arranged on the inner wall of the protection pipe and provided with a containing cavity and an opening which are communicated, the opening faces the first direction, and the first direction is parallel to the radial direction of the protection pipe. The first buffering piece penetrates through the opening and can move in the first direction, the end, located in the gap, of the first buffering piece is used for supporting the pipeline, and the limiting piece is used for limiting deviation of the first buffering piece. The first elastic piece is arranged on the bottom wall of the limiting piece located in the containing cavity and connected with the end, located in the containing cavity, of the first buffering piece. According to the pipeline protection device, the acting force applied to the pipeline by the protection pipe can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline protection, and in particular to a pipeline protection device. Background Art

[0002] Natural gas is generally transported from the mining site or processing plant to the urban gas distribution center or industrial enterprise users by pipeline. Pipeline transportation of natural gas is the only way to transport natural gas in large quantities on land. With the advancement of urbanization, more and more cities are beginning to lay natural gas pipelines.

[0003] However, in the prior art, pipelines for transporting natural gas are usually directly exposed to the outdoors, so the pipelines may be damaged after being impacted by the outside, thereby affecting the safety of transporting natural gas. Utility Model Content

[0004] The application discloses a pipeline protection device, which can play a buffering role after being impacted to protect the pipeline.

[0005] In order to achieve the above objectives, the present application discloses a pipeline protection device, comprising:

[0006] a protective tube, the protective tube being arranged on the outer wall of the pipeline and forming a gap with the outer wall of the pipeline; and

[0007] A first buffer component, which is arranged on the inner wall of the protection tube and located in the gap, and includes:

[0008] A stopper, the stopper is arranged on the inner wall of the protection tube and is provided with a communicating accommodation cavity and an opening, the extension direction of the accommodation cavity and the orientation of the opening are a first direction, and the first direction is parallel to the radial direction of the protection tube;

[0009] a first buffer member, which is passed through the opening and partially accommodated in the accommodating cavity and can move along the first direction, wherein one end of the first buffer member away from the limiting member is used to support the pipeline, and the limiting member is used to limit the displacement of the first buffer member; and

[0010] A first elastic member, wherein the first elastic member is disposed on the bottom wall of the limiting member located in the accommodating cavity and is connected to one end of the first buffer member located in the accommodating cavity.

[0011] Optionally, the first buffer member includes:

[0012] A support portion, the support portion is away from the stopper and is used to support the pipeline, the size of the support portion in the second direction is larger than the size of the opening in the second direction, and the second direction is perpendicular to the first direction;

[0013] a sliding portion, the sliding portion being located in the accommodating cavity, the dimension of the sliding portion in the second direction being larger than the dimension of the opening in the second direction, the first elastic member being connected to an end of the sliding portion away from the opening; and

[0014] A connecting rod is passed through the opening, one end of the connecting rod is connected to the supporting portion, and the other end is connected to one end of the sliding portion facing the opening, and a side surface of the connecting rod abuts against a side wall forming the opening.

[0015] Optionally, the first buffer component further includes:

[0016] a protrusion group, the protrusion group being arranged on a side wall of the limiting member located at the accommodating cavity, the protrusion group comprising a plurality of elastic protrusions, and the plurality of elastic protrusions being arranged along the first direction; and

[0017] A matching piece is arranged on the side wall of the sliding portion and abuts against the elastic protrusion.

[0018] Optionally, the matching component is a roller, and the roller is rotatably disposed on a side wall of the sliding portion, and a rotation axis of the roller is perpendicular to the first direction and perpendicular to the second direction.

[0019] Optionally, two adjacent elastic protrusions in the first direction contact each other.

[0020] Optionally, the shape of the limiting member located on the side wall of the accommodating cavity is cylindrical, the number of the protrusion groups is at least two, and at least two of the protrusion groups are evenly arranged along the circumference of the side wall of the accommodating cavity.

[0021] Optionally, a second buffer component is further included, and the second buffer component is arranged in the gap, and the second buffer component includes:

[0022] A base, the base being arranged on the inner wall of the protection tube;

[0023] a second buffer, the second buffer being spaced apart from the base in the radial direction of the protection tube and being located at a side of the base away from the protection tube, the second buffer being used to support the pipeline; and

[0024] A second elastic member is connected between the base and the second buffer member.

[0025] Optionally, the number of the first buffer components and the number of the second buffer components are both multiple, the multiple first buffer components are evenly spaced along the circumference of the protection tube, and at least one second buffer component is arranged between two adjacent first buffer components.

[0026] Optionally, a mounting tube is further included, wherein the mounting tube is arranged in the gap and fits against an outer wall of the pipeline, and the first buffer member abuts against the outer wall of the mounting tube.

[0027] Optionally, a buffer layer is further included, and the buffer layer is arranged on the outer wall of the protection tube.

[0028] Compared with the prior art, the pipeline protection device provided by the present application has at least the following beneficial effects:

[0029] The pipeline protection device of the present application provides a first buffer component on the inner wall of the protection pipe to buffer the pipeline when the protection pipe is impacted, thereby reducing the force exerted by the protection pipe on the pipeline and avoiding damage to the pipeline due to excessive impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] The present application will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:

[0032] Figure 1 It is a schematic diagram of the structure of the pipeline protection device provided in the embodiment of the present application when it is assembled with the pipeline;

[0033] Figure 2 It is a schematic diagram of the structure of the protective tube, the first buffer assembly and the second buffer assembly provided in an embodiment of the present application when they are assembled;

[0034] Figure 3 A schematic structural diagram of a first buffer assembly provided in an embodiment of the present application;

[0035] Figure 4 An exploded view of the protection tube and the installation tube provided in the embodiment of the present application;

[0036] Figure 5 A schematic diagram of the structure of a connection component provided in an embodiment of the present application.

[0037] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0038] Reference numerals:

[0039] 1-Pipeline protection device;

[0040] 11-protection tube; 111-gap;

[0041] 12-a first buffer component;

[0042] 121-limiting member; 1211-accommodating cavity; 1212-opening;

[0043] 122-first buffer member; 1221-supporting portion; 1222-sliding portion; 1223-connecting rod;

[0044] 123-first elastic member;

[0045] 124-protrusion group; 1241-elastic protrusion;

[0046] 125-matching part;

[0047] 13-second buffer assembly; 131-base; 132-second buffer member; 133-second elastic member;

[0048] 14- Installation pipe;

[0049] 15-connecting assembly; 151-transition plate; 152-fixing block; 153-bolt; 154-nut;

[0050] 16-Mounting plate;

[0051] 17-fixing ring;

[0052] 2- Pipeline. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0054] In this application, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0056] The technical solution of the present application will be further described below in conjunction with specific embodiments and drawings.

[0057] Please also read Figure 1 , Figure 2 and Figure 3 The embodiment of the present application provides a pipeline protection device 1, which includes a protection tube 11 and a first buffer component 12. The protection tube 11 is used to be arranged on the outer wall of the pipeline 2, and a gap 111 is formed between the protection tube 11 and the outer wall of the pipeline 2. The first buffer component 12 is arranged on the inner wall of the protection tube 11 and is located in the gap 111. The first buffer component 12 includes a limiter 121, a first buffer component 122 and a first elastic component 123. The limiter 121 is arranged on the inner wall of the protection tube 11, and is provided with a communicating accommodating cavity 1211 and an opening 1212. The extension direction of the accommodating cavity 1211 and the orientation of the opening 1212 are the first direction (such as Figure 3 The first direction is parallel to the radial direction of the protection tube 11. The first buffer 122 is provided in the opening 1212 and is partially accommodated in the accommodating cavity 1211, and can move along the first direction. The end of the first buffer 122 away from the stopper 121 is used to support the pipeline 2, and the stopper 121 is used to limit the displacement of the first buffer 122. The first elastic member 123 is provided on the bottom wall of the stopper 121 located in the accommodating cavity 1211, and is connected to the end of the first buffer 122 located in the accommodating cavity 1211.

[0058] Typically, the shape of the pipeline 2 for transporting natural gas is cylindrical. In order to ensure that the force between the protective tube 11 and the pipeline 2 is more uniform, the shape of the protective tube 11 in this embodiment is also cylindrical, and the radius of the protective tube 11 is greater than the radius of the pipeline 2. When the protective tube 11 is sleeved on the pipeline 2 and coaxial with the pipeline 2, a gap 111 is formed between the inner wall of the protective tube 11 and the outer wall of the pipeline 2, and the gap 111 is approximately equal in the circumferential direction of the protective tube 11.

[0059] The first buffer member 122 is located in the gap 111 and one end of the first buffer member 122 used to support the pipe 2 may directly abut against the pipe 2 or indirectly abut against the pipe 2, which is not limited here.

[0060] In addition, the first elastic member 123 can be fixedly connected to one end of the first buffer member 122 located in the accommodating cavity 1211, or can be in contact with one end of the first buffer member 122 located in the accommodating cavity 1211, which is not limited here. The first elastic member 123 can be a spring, or other parts with a buffering function, which is not limited here. It should be noted that the first elastic member 123 in the following embodiments is described as a spring, but it does not mean that the first elastic member 123 can only be a spring.

[0061] The first buffer component 12 is arranged on the inner wall of the protection tube 11 and acts on the pipeline 2. When the protection tube 11 is impacted, the first buffer component 12 acts as a buffer between the inner wall of the protection tube 11 and the outer wall of the pipeline 2, thereby reducing the force exerted by the protection tube 11 on the pipeline 2 and avoiding damage to the pipeline 2 due to excessive impact.

[0062] Specifically, the expansion and contraction direction of the first elastic member 123 is parallel to the first direction. It is understandable that when the protection tube 11 is not impacted, the first elastic member 123 may be in a compressed state (but not in an extreme compression state), or in a state of neither stretching nor compression, which is not limited here. When the protection tube 11 is impacted, the protection tube 11 is subjected to a radial component force, so that the impacted area of ​​the protection tube 11 is close to the pipeline 2. At this time, the first elastic member 123 is continuously compressed to achieve a buffering effect, thereby reducing the magnitude of the force applied by the protection tube 11 to the pipeline 2, and avoiding damage to the pipeline 2.

[0063] In addition, the limit member 121 restricts the first buffer member 122 to move only along the first direction, so that the reaction force applied by the first buffer member 122 to the first elastic member 123 can only be along the first direction. In other words, the first buffer member 122 is prevented from applying reaction forces in other directions to the first elastic member 123, thereby preventing the first elastic member 123 from deforming in a direction perpendicular to the first direction, thereby causing the first elastic member 123 to lose its buffering function.

[0064] See also Figure 1 It can be understood that in order to ensure more stable installation, the pipeline protection device 1 provided in this embodiment can also include a mounting plate 16 and two fixing rings 17. The two fixing rings 17 are both arranged on the mounting plate 16 and are respectively sleeved on both ends of the pipeline 2. The protection pipe 11 is arranged between the two fixing rings 17.

[0065] See also Figure 3 In some embodiments, the first buffer member 122 includes a support portion 1221, a sliding portion 1222, and a connecting rod 1223. The support portion 1221 is away from the stop member 121 and is used to support the pipeline 2. The support portion 1221 is in the second direction (eg Figure 3The dimension in the Y direction is larger than the dimension in the second direction of the opening 1212, and the second direction is perpendicular to the first direction. The sliding part 1222 is located in the accommodating cavity 1211, and the dimension in the second direction of the sliding part 1222 is larger than the dimension in the second direction of the opening 1212. The first elastic member 123 is connected to the end of the sliding part 1222 facing away from the opening 1212. The connecting rod 1223 is passed through the opening 1212, and one end of the connecting rod 1223 is connected to the supporting part 1221, and the other end is connected to the end of the sliding part 1222 facing the opening 1212, and the side surface of the connecting rod 1223 abuts against the side wall forming the opening 1212.

[0066] Among them, the size of the support part 1221 in the second direction is larger than the size of the opening 1212 in the second direction, so that even if the compression amount of the first elastic member 123 is large, the support part 1221 will not enter the accommodating cavity 1211 through the opening 1212, ensuring that the support part 1221 is always in the gap 111 to prevent the first buffer member 122 from failing.

[0067] Similarly, the dimension of the sliding portion 1222 in the second direction is greater than the dimension of the opening 1212 in the second direction, so that when the protective tube 11 is not impacted and the first elastic member 123 is in a compressed state (but not in an extreme compression state), the sliding portion 1222 will not enter the gap 111 through the opening 1212, thereby ensuring that the sliding portion 1222 is always in the accommodating cavity 1211 and preventing the first buffer member 122 from failing.

[0068] In addition, the side surface of the connecting rod 1223 abuts against the side wall of the opening 1212 formed by the limiting member 121, so that the side wall of the opening 1212 formed by the limiting member 121 plays a role in limiting the displacement of the connecting rod 1223, so that the connecting rod 1223 can only move along the first direction but cannot be displaced relative to the first direction, thereby making the first buffer member 122 only move along the first direction but cannot be displaced relative to the first direction.

[0069] In some other embodiments, if the first elastic member 123 is continuously in the compressed state, the size of the support portion 1221 in the second direction may also be equal to or smaller than the size of the opening 1212 in the second direction.

[0070] Please continue reading Figure 3 In some embodiments, the first buffer assembly 12 further includes a protrusion group 124 and a matching piece 125. The protrusion group 124 is disposed on the side wall of the stopper 121 located in the accommodating cavity 1211, and the protrusion group 124 includes a plurality of elastic protrusions 1241, and the plurality of elastic protrusions 1241 are arranged along the first direction. The matching piece 125 is disposed on the side wall of the sliding portion 1222 and abuts against the elastic protrusions 1241.

[0071] The elastic protrusion 1241 is made of an elastic material, such as rubber, so that the elastic protrusion 1241 can be deformed under the action of an external force and can return to its original shape after the external force is lost.

[0072] When the sliding portion 1222 moves along the first direction, the matching piece 125 abuts against the elastic protrusion 1241 and forms friction, thereby forming an auxiliary buffering effect.

[0073] In some other embodiments, the matching member 125 may also abut against the side wall of the limiting member 121 located in the accommodating cavity 1211 .

[0074] In some embodiments, the matching member 125 is a roller, which is rotatably disposed on a side wall of the sliding portion 1222 , and a rotation axis of the roller is perpendicular to the first direction and perpendicular to the second direction.

[0075] It should be noted that, in this embodiment, the size of the elastic protrusion 1241 in the second direction gradually increases from the two ends in the first direction to the middle position. In addition, the roller and the limiting member 121 are spaced apart from the side wall of the accommodating cavity 1211, but the spacing between the sliding portion 1222 and the limiting member 121 on the side wall of the accommodating cavity 1211 can be smaller than the maximum size of the elastic protrusion 1241 in the second direction.

[0076] In this embodiment, when the sliding portion 1222 moves along the first direction, rolling friction is generated between the roller and the flexible protrusion, thereby protecting the flexible protrusion and extending the service life of the flexible protrusion.

[0077] In some other embodiments, the fitting member 125 may also be a non-rotating cam.

[0078] In some embodiments, two adjacent elastic protrusions 1241 in the first direction contact each other.

[0079] In this embodiment, two adjacent elastic protrusions 1241 in the first direction contact each other, so that when the roller rolls to one end of one of the elastic protrusions 1241 and does not leave the elastic protrusion 1241, the roller can contact the adjacent elastic protrusion 1241, thereby avoiding the situation where the roller appears suspended without contacting the elastic protrusion 1241, ensuring that the roller can always contact the elastic protrusion 1241 and play an auxiliary buffering role.

[0080] In some other embodiments, a gap may be formed between two adjacent elastic protrusions 1241 in the first direction.

[0081] In some embodiments, the shape of the limiting member 121 located on the side wall of the accommodating cavity 1211 is cylindrical, the number of the protrusion groups 124 is at least two, and the at least two protrusion groups 124 are evenly arranged along the circumference of the side wall of the accommodating cavity 1211.

[0082] At least two groups of protrusion groups 124 are evenly arranged along the axial direction of the side wall of the accommodating cavity 1211, so that the force applied by the protrusion groups 124 to the sliding part 1222 is dispersed and uniform, thereby preventing the sliding part 1222 from deviating during the movement along the first direction.

[0083] In some other embodiments, the number of the protrusion group 124 may also be one.

[0084] See also Figure 2 In some embodiments, the pipeline protection device 1 further includes a second buffer component 13, which is disposed in the gap 111. The second buffer component 13 includes a base 131, a second buffer member 132, and a second elastic member 133. The base 131 is disposed on the inner wall of the protection tube 11. The second buffer member 132 is spaced apart from the base 131 in the radial direction of the protection tube 11 and is located on a side of the base 131 away from the protection tube 11. The second buffer member 132 is used to support the pipeline 2. The second elastic member 133 is connected between the base 131 and the second buffer member 132.

[0085] The second buffer 132 can be similar to the first buffer 122, that is, the second buffer 132 is located in the gap 111 and one end used to support the pipe 2 can directly abut against the pipe 2, or can indirectly abut against the pipe 2, which is not limited here. In addition, when the protective member is not impacted, the distance between the second buffer 132 and the inner wall of the protective member can be smaller than the distance between the first buffer 122 and the inner wall of the protective member, that is, when the protective member is impacted, the first buffer component 12 first plays a buffering role, and the second buffer component 13 then plays a buffering role, thereby extending the service life of the second buffer component 13.

[0086] In some other embodiments, the second elastic member 133 may also be used to directly support the pipeline 2 .

[0087] In some embodiments, the number of first buffer components 12 and the number of second buffer components 13 are both multiple, and the multiple first buffer components 12 are evenly spaced along the circumference of the protective tube 11, and at least one second buffer component 13 is arranged between two adjacent first buffer components 12.

[0088] The multiple first buffer components 12 are evenly spaced along the circumference of the protection tube 11, so that the force exerted by the protection tube 11 on the pipeline 2 can be evenly dispersed, thereby reducing the force borne by a single first buffer component 12. It can be understood that at least one second buffer component 13 is arranged between two adjacent first buffer components 12, which further reduces the force borne by a single first buffer component 12, and also reduces the force borne by a single second buffer component 13, thereby extending the service life of the first buffer component 12 and the second buffer component 13.

[0089] In addition, a plurality of first buffer components 12 are evenly spaced along the circumference of the protection tube 11, which increases the contact points between the protection tube 11 and the pipeline 2, improves the stability of the pipeline 2, and reduces the movement of the pipeline 2 due to external impact.

[0090] In some other embodiments, two adjacent second buffer components 13 may also be located on both sides of two adjacent first buffer components 12 along the circumference of the protection tube 11 .

[0091] See also Figure 4 In some embodiments, the pipeline protection device 1 further includes a mounting tube 14 , which is disposed in the gap 111 and fits against the outer wall of the pipeline 2 , and the first buffer member 122 abuts against the outer wall of the mounting tube 14 .

[0092] In this embodiment, the mounting tube 14 is fitted to the outer wall of the pipe 2, so that one end of the first buffer member 122 located in the gap 111 abuts against the outer wall of the mounting tube 14, that is, the first buffer member 122 indirectly abuts against the pipe 2, which can prevent the first buffer member 122 from directly abutting against the pipe 2, thereby avoiding the force applied by the first buffer member 122 from directly acting on a specific area of ​​the pipe 2.

[0093] Please also read Figure 4 and Figure 5 Exemplarily, the mounting tube 14 includes a first mounting half-tube, a second mounting half-tube and a connecting assembly 15, the connecting assembly 15 includes a transition plate 151, a fixing block 152, a bolt 153 and a nut 154, the transition plate 151 is arranged on the outer wall of the first mounting half-tube, the fixing block 152 is arranged on the surface of the transition plate 151 away from the first mounting half-tube, the bolt 153 passes through the first mounting half-tube, the second mounting half-tube and the transition plate 151, one end of the bolt 153 is connected to the fixing block 152, and the other end is connected to the second mounting half-tube through the nut 154, so that the first mounting half-tube and the second mounting half-tube are detachably connected.

[0094] In some other embodiments, the first buffer member 122 may also directly abut against the outer wall of the pipe 2 .

[0095] In some embodiments, the pipeline protection device 1 further includes a buffer layer (not shown in the figures), which is disposed on the outer wall of the protection pipe 11 .

[0096] The buffer layer may be made of sponge or other materials with buffering effect, which is not limited here.

[0097] The buffer layer is disposed on the outer wall of the protection tube 11, so that the impact force applied to the protection tube 11 indirectly acts on the buffer layer, and the buffer layer can absorb part of the impact force, thereby weakening the impact force applied to the protection tube 11, so as to further improve the buffering effect. In addition, when pedestrians or staff members accidentally collide with the protection tube 11, the buffer layer can also play a role in protecting pedestrians or staff members.

[0098] In some other embodiments, the buffer layer may also be disposed on the outer wall of the pipe 2 .

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A pipeline protection device, characterized in that: include: A protection pipe, the protection pipe is used to be arranged on the outer wall of the pipeline and form a gap between the protection pipe and the outer wall of the pipeline; as well as A first buffer component, which is arranged on the inner wall of the protection tube and located in the gap, and includes: A stopper, the stopper is arranged on the inner wall of the protection tube and is provided with a communicating accommodation cavity and an opening, the extension direction of the accommodation cavity and the orientation of the opening are a first direction, and the first direction is parallel to the radial direction of the protection tube; a first buffer member, which is passed through the opening and partially accommodated in the accommodating cavity and can move along the first direction, wherein one end of the first buffer member away from the limiting member is used to support the pipeline, and the limiting member is used to limit the displacement of the first buffer member; and A first elastic member, wherein the first elastic member is disposed on the bottom wall of the limiting member located in the accommodating cavity and is connected to one end of the first buffer member located in the accommodating cavity.

2. The pipeline protection device according to claim 1, characterized in that: The first buffer member comprises: A support portion, the support portion is away from the stopper and is used to support the pipeline, the size of the support portion in the second direction is larger than the size of the opening in the second direction, and the second direction is perpendicular to the first direction; a sliding portion, the sliding portion being located in the accommodating cavity, the dimension of the sliding portion in the second direction being larger than the dimension of the opening in the second direction, the first elastic member being connected to an end of the sliding portion away from the opening; and A connecting rod is passed through the opening, one end of the connecting rod is connected to the supporting portion, and the other end is connected to one end of the sliding portion facing the opening, and a side surface of the connecting rod abuts against a side wall forming the opening.

3. The pipeline protection device according to claim 2, characterized in that: The first buffer component also includes: a protrusion group, the protrusion group being arranged on a side wall of the limiting member located at the accommodating cavity, the protrusion group comprising a plurality of elastic protrusions, and the plurality of elastic protrusions being arranged along the first direction; and A matching piece is arranged on the side wall of the sliding portion and abuts against the elastic protrusion.

4. The pipeline protection device according to claim 3, characterized in that: The matching component is a roller, and the roller is rotatably disposed on the side wall of the sliding portion. The rotation axis of the roller is perpendicular to the first direction and perpendicular to the second direction.

5. The pipeline protection device according to claim 4, characterized in that: Two of the elastic protrusions adjacent to each other in the first direction are in contact with each other.

6. The pipeline protection device according to claim 3, characterized in that: The shape of the accommodating cavity is cylindrical, the number of the protrusion groups is at least two, and the at least two protrusion groups are evenly arranged along the circumference of the side wall of the accommodating cavity.

7. The pipeline protection device according to any one of claims 1 to 6, characterized in that: The second buffer component is also included, and the second buffer component is arranged in the gap, and the second buffer component includes: A base, the base being arranged on the inner wall of the protection tube; a second buffer, the second buffer being spaced apart from the base in the radial direction of the protection tube and being located at a side of the base away from the protection tube, the second buffer being used to support the pipeline; and A second elastic member is connected between the base and the second buffer member.

8. The pipeline protection device according to claim 7, characterized in that: The number of the first buffer components and the number of the second buffer components are both multiple, and the multiple first buffer components are evenly spaced along the circumference of the protection tube, and at least one second buffer component is arranged between two adjacent first buffer components.

9. The pipeline protection device according to any one of claims 1 to 6, characterized in that: It also includes a mounting tube, which is arranged in the gap and fits with the outer wall of the pipeline, and the first buffer member abuts against the outer wall of the mounting tube.

10. The pipeline protection device according to any one of claims 1 to 6, characterized in that: It also includes a buffer layer, which is arranged on the outer wall of the protection tube.

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