Anti-collision and anti-impact protection device and method for pipeline

Abstract

The invention provides a pipeline anti-collision impact protection device and method.The protection device comprises a protection shell, the protection shell comprises at least one buffer pipe, the buffer pipe comprises a first splicing piece and a second splicing piece which are spliced with each other, and the first splicing piece and the second splicing piece are arranged on the outer side of a target pipeline in a clamped mode and spliced; wherein the buffer pipe comprises an inner pipe and an outer pipe which are connected in a sleeved mode, a buffer cavity is formed between the inner pipe and the outer pipe, the buffer pipe is provided with at least one buffer spring in the buffer cavity, and the two ends of the buffer spring are connected with the outer pipe and the inner pipe respectively. According to the pipeline anti-collision and anti-impact protection device, the spliced buffer pipe is utilized, the buffer pipe can be very conveniently installed on the outer side of the target pipeline, the buffer spring is arranged in the target pipeline, and therefore the protection shell can achieve effective protection against collision and impact of large-weight objects such as external pipelines and supports.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power plant pipeline protection, and particularly relates to a pipeline anti-collision and impact protection device and method. Background Art

[0002] As the main channel for transmitting media in a nuclear power plant, pipelines play a role in connecting various systems and devices, and are an indispensable part of the normal operation of a nuclear power plant. For example, the large-diameter main pipeline of the primary loop is mainly responsible for the circulation of coolant, and is a nuclear safety class I component, which plays a crucial role in the circulation of coolant. Nuclear power plant pipelines not only need to withstand harsh conditions such as high temperature and high pressure, but also need to have characteristics such as corrosion resistance and good sealing performance to ensure the safe and stable operation of the nuclear power plant.

[0003] During the operation of nuclear power plant pipelines, they may be affected by relatively common internal and external vibration loads, such as earthquakes, flow-induced vibrations, valve discharge loads, etc. In addition, during an earthquake, nuclear power plant pipelines also face the risk of being collided and impacted by non-seismic items suspended above. According to the seismic classification, nuclear power plant items are divided into seismic class I, seismic class II, and non-seismic class. Seismic items can withstand the vibration loads brought by earthquakes during an earthquake, but non-seismic items may fall or break due to an earthquake. Therefore, for seismic pipelines, although they will not be damaged by themselves during an earthquake, they may be impacted by falling or broken non-seismic items above. Therefore, it is necessary to protect the seismic pipelines in a nuclear power plant that are vulnerable to collision and impact damage to prevent nuclear safety accidents from occurring.

[0004] Currently, the protection of nuclear power plant pipelines is usually achieved through solutions such as setting dampers, anti-fling limiters, anti-spray baffles, explosion-proof brackets, etc. The above solutions are mainly effective for pipeline vibration and splash protection, etc., but cannot effectively protect against direct collision and impact on pipelines.

[0005] Based on this, the inventors of the present application propose a pipeline anti-collision and impact protection device and method in order to solve one or more of the above technical problems. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the defect that the protection structure of nuclear power pipelines in the prior art cannot effectively protect against direct collision and impact, and provide a pipeline anti-collision and impact protection device and method.

[0007] The present invention solves the above technical problems through the following technical solutions:

[0008] The present invention provides a pipeline anti-collision and impact protection device, which is characterized in that it includes:

[0009] The protective shell includes at least one buffer tube, wherein the buffer tube includes a first splicing piece and a second splicing piece spliced to each other, wherein the first splicing piece and the second splicing piece are clamped on the outside of the target pipeline and spliced; wherein,

[0010] The buffer tube comprises an inner tube and an outer tube which are sleeved together, a buffer cavity is formed between the inner tube and the outer tube, and at least one buffer spring is arranged in the buffer cavity. Two ends of the buffer spring are respectively connected to the outer tube and the inner tube.

[0011] According to an embodiment of the present invention, the protective shell includes at least two buffer tubes, and the at least two buffer tubes are spliced with each other and sleeved on the outside of the target pipeline.

[0012] According to an embodiment of the present invention, a splicing tube and a splicing groove are respectively provided at opposite ends of the buffer tube, and adjacent buffer tubes are spliced by the cooperation of the splicing tube and the splicing groove.

[0013] According to an embodiment of the present invention, the first assembling piece and the second assembling piece are connected by a buckle;

[0014] The buckle is arranged at two opposite ends of the buffer tube, and a strap is arranged on the first splicing piece, and a buckle plate movably matched with the strap is arranged on the second splicing piece;

[0015] Alternatively, a strap is provided on the second assembling piece, and a gusset plate movably matched with the strap is provided on the first assembling piece.

[0016] According to an embodiment of the present invention, the buffer tube is provided with at least two groups of buffer units along its axial direction, and each group of the buffer units is provided with at least two buffer springs along the circumference of the buffer tube.

[0017] According to an embodiment of the present invention, the buffer spring in the first splicing piece is a tension spring, and both ends of the tension spring are connected to the inner tube and the outer tube through hooks;

[0018] The buffer spring in the second splicing piece is a pressure spring, and both ends of the pressure spring are connected to the inner tube and the outer tube by connecting studs;

[0019] Wherein, the first assembling piece is located above the second assembling piece.

[0020] According to an embodiment of the present invention, at least one handle is disposed on the first assembling piece and the second assembling piece of each buffer tube, and the handle is disposed on the outer tube.

[0021] According to an embodiment of the present invention, support mechanisms are further provided at opposite ends of the protective shell. The support mechanisms are circumferentially arranged around the outer circumference of the target pipeline with at least two mounting supports. One end of each mounting support is used to connect to a pipeline support frame, and the other end elastically abuts against the target pipeline.

[0022] According to an embodiment of the present invention, each mounting support includes a mounting plate, an outer sleeve, and an inner sleeve. The mounting plate is used to connect to a pipeline support frame. The inner sleeve is sleeved between the outer sleeves, and an elastic member is arranged inside the inner sleeve;

[0023] One end of the inner sleeve elastically abuts against a backing plate sleeved outside the target pipeline.

[0024] According to an embodiment of the present invention, the support mechanism includes four such mounting supports, and the four mounting supports are used to surround the outside of the target pipeline.

[0025] The present invention also provides a method for protecting a pipeline against collision and impact. Using the pipeline anti-collision and impact protection device as described above, the protection method includes:

[0026] Step 1: Determine the position of the target pipeline;

[0027] Step 2: Install a protective shell at the target pipeline;

[0028] Step 3: Determine whether there are pipeline support frames at both ends of the target pipeline; if there are pipeline support frames, further set up support mechanisms at the pipeline support frames, and protect the target pipeline through the support mechanisms and the protective shell; if there are no pipeline support frames, only use the protective shell to protect the target pipeline.

[0029] The positive and progressive effects of the present invention are as follows:

[0030] For the pipeline anti-collision and impact protection device of the present invention, by using the spliced buffer tube, the buffer tube can be very conveniently installed on the outside of the target pipeline, and a buffer spring is arranged inside the target pipeline. Thus, the protective shell can effectively protect against the collision and impact of large-weight objects such as external pipelines and supports. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and other features, properties, and advantages of the present invention will become more apparent through the following description in conjunction with the drawings and embodiments, where:

[0032] Figure 1 is a schematic structural diagram of the pipeline anti-collision and impact protection device of the present invention;

[0033] Figure 2 is Figure 1Structural schematic diagram of the middle buffer pipe from the axial perspective;

[0034] Figure 3 is Figure 1 Schematic cross-sectional view of the middle buffer pipe;

[0035] Figure 4 is Figure 1 Schematic diagram of the mating structure between the target pipe and the support mechanism in the middle.

[0036] 1. Protective shell;

[0037] 2. Buffer pipe; 21. First splicing part; 22. Second splicing part; 23. Inner pipe; 24. Outer pipe; 241. Handle; 25. Buffer cavity; 26. Buffer unit; 261. Buffer spring; 262. Tension spring; 263. Hook; 264. Pressure spring; 265. Connecting stud; 27. Splicing pipe; 28. Splicing groove; 29. Buckle; 291. Buckle plate; 292. Clamping plate;

[0038] 3. Target pipe;

[0039] 4. Support mechanism; 41. Installation support; 42. Installation plate; 43. Outer sleeve; 44. Inner sleeve; 45. Elastic part; 46. Cushion plate;

[0040] 5. Pipe support frame. Detailed implementation manners

[0041] The present invention will be further described below in conjunction with specific embodiments and the accompanying drawings. More details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention is obviously capable of being implemented in many other different ways than those described herein. Those skilled in the art can make similar generalizations and deductions according to the actual application situation without departing from the connotation of the present invention. Therefore, the protection scope of the present invention should not be limited by the content of this specific embodiment.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above accompanying drawings are intended to cover non-exclusive inclusion.

[0043] Please refer to Figures 1 to 4 , the present invention provides a pipeline anti-collision and impact protection device, including a protective shell 1. The protective shell 1 includes at least one buffer pipe 2. The buffer pipe 2 includes a first splicing part 21 and a second splicing part 22 that are spliced with each other. The first splicing part 21 and the second splicing part 22 are clamped on the outer side of the target pipe 3 and spliced.

[0044] In a nuclear power plant pipeline, the target pipeline 3 is defined as: a pipeline that is itself a seismic-resistant pipeline but may be impacted by a non-seismic item that falls or breaks above it.

[0045] The position of the target pipeline 3 can be determined through preliminary simulator tests or manually, and the specific method is not limited herein.

[0046] To meet the protection requirements of the target pipeline 3 at different positions, the buffer pipe 2 of the present invention is provided as a first splicing member 21 and a second splicing member 22 that are spliced together. Thus, the buffer pipe 2 can be installed at different positions as needed, thereby meeting the protection requirements of the target pipeline 3 at different positions. Moreover, the number of buffer pipes 2 can be correspondingly adjusted according to the axial length of the target pipeline 3, and the specific number of buffer pipes 2 is not limited herein.

[0047] It should be noted that if thermal insulation cotton is provided on the outside of the target pipeline 3, the thermal insulation cotton is regarded as a part of the target pipeline 3, and the thermal insulation cotton will not be removed, but the buffer pipe 2 will be directly installed on the outside of the thermal insulation cotton.

[0048] Please continue to refer to Figure 1 and Figure 2 As shown in, the buffer pipe 2 includes an inner pipe 23 and an outer pipe 24 that are sleeved, a buffer cavity 25 is formed between the inner pipe 23 and the outer pipe 24, and at least one buffer spring 261 is provided in the buffer cavity 25 of the buffer pipe 2. The two ends of the buffer spring 261 are respectively connected to the outer pipe 24 and the inner pipe 23.

[0049] Traditionally, the protection of pipelines generally uses a solid pipe or multiple layers of pipes arranged on the outside of the pipeline. Through the self-characteristics of the material, such as hardness or elasticity, it resists external impacts. In this way, there are problems such as poor energy absorption, large weight, and the risk of brittle failure. For example, when an external impact occurs, the solid pipe or multiple layers of pipes will be impacted at the target position, and most of the loads generated by the impact will still be transmitted to the target pipeline 3, and the protection effect on the target pipeline 3 is relatively poor.

[0050] Based on this, the buffer pipe 2 of the present invention is provided as an inner pipe 23 and an outer pipe 24, and a buffer cavity 25 is provided between the inner pipe 23 and the outer pipe 24. The buffer spring 261 in the buffer cavity 25 is used to absorb energy, which is beneficial to dissipate the impact energy. Moreover, the double-layer structure can disperse the concentrated load to a larger area through deformation, and has a better protection effect on low-frequency and large-mass impacts.

[0051] That is, when an impact occurs, the outer pipe 24 will deform, and the deformation will produce a depression, increasing the stress range at the impact position. Moreover, under the elastic action of the buffer spring 261, the load is further absorbed, thereby achieving a better protection effect.

[0052] Refer toFigure 1 The protective shell 1 includes at least two buffer tubes 2 , and the at least two buffer tubes 2 are spliced with each other and sleeved on the outside of the target pipeline 3 .

[0053] In actual protection, the number and position of the target pipelines 3 are different, and the total length of each target pipeline 3 is also different. Based on this, the buffer tube 2 is set to be spliced to meet the protection requirements of target pipelines 3 of different lengths. Figure 1 Four target pipes 3 are taken as an example for explanation. In actual situations, a corresponding number of buffer pipes 2 can be selected according to the length of the target pipes 3 .

[0054] Specifically, a splicing tube 27 and a splicing groove 28 are respectively provided at opposite ends of the buffer tube 2 , and adjacent buffer tubes 2 are spliced by the cooperation of the splicing tube 27 and the splicing groove 28 .

[0055] In the actual installation process, the splicing tube 27 can be inserted into the splicing groove 28 to install multiple buffer tubes 2. For example, the length of a single buffer tube 2 can be limited to 400mm-800mm. If it exceeds 800mm, it can be spliced by splicing multiple buffer tubes 2.

[0056] After the buffer tubes 2 are spliced, welding can be further used to fix the adjacent buffer tubes 2. Alternatively, welding may not be performed and only splicing is sufficient, thereby facilitating the disassembly and replacement of the spliced tubes 27.

[0057] Optionally, the buffer tube 2 can be made of 0.5-2 mm stainless steel plate with corrosion resistance, high temperature resistance and high strength, so as to meet the stability requirements of long-term use in normal or high temperature environments, not easily deformed or brittle, and able to withstand greater external pressure.

[0058] Please refer to Figure 2 and Figure 3 The first splicing piece 21 and the second splicing piece 22 are connected by a buckle 29; the buckle 29 is arranged at the opposite ends of the buffer tube 2, and a strap 291 is arranged on the first splicing piece 21, and a buckle plate 292 that movably cooperates with the strap 291 is arranged on the second splicing piece 22; or, the strap 291 is arranged on the second splicing piece 22, and the buckle plate 292 that movably cooperates with the strap 291 is arranged on the first splicing piece 21.

[0059] The first splicing piece 21 and the second splicing piece 22 are semicircular in shape, and the two are spliced together to form a columnar cylindrical structure, which can be sleeved outside the target pipe 3.

[0060] During installation, the first assembling piece 21 and the second assembling piece 22 can be wrapped around the target pipe 3 first, and then the first assembling piece 21 and the second assembling piece 22 can be locked by the buckle 29 .

[0061] Using the buckle 29 to connect the first splicing member 21 and the second splicing member 22 is convenient for later disassembly, which is conducive to the maintenance or replacement of the buffer tube 2.

[0062] Please continue to refer to Figure 3 , at least two sets of buffer units 26 are arranged along the axial direction of the buffer tube 2, and at least two buffer springs 261 are arranged circumferentially along the circumference of the buffer tube 2 for each set of buffer units 26. Figure 3 Taking three sets of buffer units 26 as an example for illustration, the specific number of buffer units 26 can be adjusted according to needs and is not limited here.

[0063] Taking three sets of buffer units 26 as an example for illustration, three sets of buffer units 26 are arranged at the opposite ends and the middle of each buffer tube 2. Each set of buffer units 26 includes six buffer springs 261, and three buffer springs 261 are respectively provided on the first splicing member 21 and the second splicing member 22. The number of buffer units 26 and buffer springs 261 is only an example here and is not limited. The number of buffer springs 261 included in the first splicing member 21 and the second splicing member 22 is the same and is indefinite, and can be adjusted according to actual needs.

[0064] The buffer units 26 at the ends can prevent the deformation of the pipe ends or the cracking of the interfaces, while the buffer units 26 in the middle can disperse the bending or torsional loads received in the middle, which is beneficial to ensuring the protective effect of the buffer tube 2 on the target pipe 3.

[0065] It should be noted that the buffer spring 261 in the first splicing member 21 is a tension spring 262, and both ends of the tension spring 262 are connected to the inner tube 23 and the outer tube 24 through hooks 263; the buffer spring 261 in the second splicing member 22 is a compression spring 264, and both ends of the compression spring 264 are connected to the inner tube 23 and the outer tube 24 by connecting studs 265. Among them, the first splicing member 21 is located above the second splicing member 22.

[0066] It can be seen that when the target pipe 3 is laterally collided, one side of the buffer tube 2 may be subjected to tensile force and split. At this time, the tension spring 262 can absorb energy by resisting tensile deformation, preventing the gap of the buffer cavity 25 in the buffer tube 2 from being too large and the structure from failing.

[0067] When the target pipe 3 is subjected to a positive compression impact (along the vertical direction of the target pipe 3), the gap of the buffer tube 2 is compressed, and the compression spring 264 absorbs the impact energy by resisting compression deformation, avoiding the target pipe 3 directly bearing the impact load.

[0068] That is, the tension spring 262 stores energy through elastic deformation and can slowly release it during rebound, extending the impact time and reducing the instantaneous peak load. During the compression process, the compression spring 264 directly consumes energy through plastic deformation, reducing the impact force transmitted to the target pipe 3.

[0069] Through the combined action of the tension spring 262 and the compression spring 264, the gap of the buffer chamber 25 in the buffer pipe 2 can be dynamically adjusted. Under asymmetric impact, the tension spring 262 and the compression spring 264 disperse the concentrated load to a larger area through complementary deformation, avoiding local buckling or fracture.

[0070] Please continue to refer to Figure 3 At least one handle 241 is provided on each of the first splicing member 21 and the second splicing member 22 of each buffer pipe 2, and the handle 241 is provided on the outer pipe 24.

[0071] It can be seen that the number of handles 241 can be one, two or more, which is not limited here. For example, taking two handles 241 as an example, the two handles 241 are arranged at intervals along the axial direction of the buffer pipe 2 and can be located at 1 / 3 and 2 / 3 of the buffer pipe 2 respectively, facilitating the installation and disassembly by the staff.

[0072] Please continue to refer to Figure 1 and Figure 4 At opposite ends of the protective shell 1, a support mechanism 4 is further provided. The support mechanism 4 is circumferentially provided with at least two mounting seats 41 around the outer circumference of the target pipe 3. One end of the mounting seat 41 is used to connect to the pipe support frame 5, and the other end elastically abuts against the target pipe 3.

[0073] If the length of the target pipe 3 is too long, one or more pipe support frames 5 will be arranged along its axis. To improve the support effect of the target pipe 3, the present invention provides a support mechanism 4 at opposite ends of the protective shell 1, installs the support mechanism 4 on the pipe support frame 5, and forms support and fixation for the target pipe 3.

[0074] Specifically, the mounting seat 41 includes a mounting plate 42, an outer sleeve 43 and an inner sleeve 44. The mounting plate 42 is used to connect to the pipe support frame 5. The inner sleeve 44 is sleeved between the outer sleeves 43, and an elastic member 45 is arranged inside the inner sleeve 44; one end of the inner sleeve 44 elastically abuts against a backing plate 46 sleeved outside the target pipe 3.

[0075] It can be seen that an avoidance groove for the target pipe 3 to pass through is formed on the pipe support frame 5. When installing the mounting seat 41, the elastic member 45 can be kept in a semi-compressed state by means of external force, and the mounting seat 41 is installed in the avoidance groove and elastically supports the backing plate 46 sleeved outside the target pipe 3 at one end.

[0076] Among them, the mounting plate 42 can be connected to the pipeline support frame 5 by means of welding, bolts or screws. The mounting support 41 can be used to elastically support the target pipeline 3.

[0077] Optionally, the support mechanism 4 includes four mounting supports 41, and the four mounting supports 41 are used to surround the outside of the target pipeline 3.

[0078] That is to say, a square backing plate 46 can be sleeved outside the target pipeline 3, and one end of the support mechanism 4 can abut against the backing plate 46, thereby elastically supporting the target pipeline 3.

[0079] It can be seen that the protective shell 1 and the support mechanism 4 can be used in cooperation, or only the protective shell 1 can be used to protect the target pipeline 3, which can be specifically adjusted according to the actual installation environment and is not limited here.

[0080] In summary, compared with the protective device for traditional nuclear power plant pipelines that can only protect against vibration and splashes, the protective device proposed by the present invention can effectively protect against the collision and impact of large-weight objects such as external pipelines and supports.

[0081] Moreover, the present invention is provided with the protective shell 1 and the support mechanism 4, which not only play a protective role for the target pipeline 3, but also play a supporting function, and are convenient to install and have better protective performance.

[0082] The present invention also proposes a pipeline anti-collision and impact protection method, which adopts the above-mentioned pipeline anti-collision and impact protection device. The protection method includes:

[0083] Step 1, determine the position of the target pipeline;

[0084] Step 2, install a protective shell at the target pipeline;

[0085] Step 3, determine whether there are pipeline support frames at both ends of the target pipeline; if there are pipeline support frames, further set a support mechanism at the pipeline support frame, and protect the target pipeline through the support mechanism and the protective shell; if there is no pipeline support frame, only use the protective shell to protect the target pipeline.

[0086] It can be seen that the position of the target pipeline in Step 1 can be determined by pre-simulation and experimental research, and the specific method is not limited here.

[0087] Through the above protection method, the present invention can effectively protect the target pipeline under impact and ensure the safe operation of the target pipeline.

[0088] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "attachment", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can also be a mechanical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0089] The present application uses specific terms to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" mean a certain feature, structure, or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that the "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more at different positions in this specification is not necessarily the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the present application can be appropriately combined.

[0090] Although the present invention is disclosed above in preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modifications, equivalent changes, and decorations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention all fall within the protection scope defined by the claims of the present invention.

Claims

1. An anti-collision and impact protection device for pipelines, characterized in that, Comprising: A protective shell including at least one buffer tube, the buffer tube including a first splicing member and a second splicing member spliced with each other, the first splicing member and the second splicing member being clamped on the outer side of the target pipeline and spliced; wherein, The buffer tube includes an inner tube and an outer tube sleeved with each other, a buffer cavity is formed between the inner tube and the outer tube, and at least one buffer spring is arranged in the buffer cavity of the buffer tube, and two ends of the buffer spring are respectively connected to the outer tube and the inner tube.

2. The anti-collision and impact protection device for pipelines according to claim 1, characterized in that, The protective shell includes at least two of the buffer tubes, and at least two of the buffer tubes are spliced with each other and sleeved on the outer side of the target pipeline.

3. The pipeline anti-collision and impact protection device according to claim 2, characterized in that, Splicing pipes and splicing grooves are respectively arranged at opposite ends of the buffer tube, and adjacent buffer tubes are spliced through the cooperation of the splicing pipes and the splicing grooves.

4. The pipeline anti-collision and impact protection device according to claim 1, characterized in that, The first splicing member and the second splicing member are connected by a buckle; The buckle is arranged at opposite ends of the buffer tube, a latch plate is arranged on the first splicing member, and a buckle plate that is movably matched with the latch plate is arranged on the second splicing member; Or, a latch plate is arranged on the second splicing member, and a buckle plate that is movably matched with the latch plate is arranged on the first splicing member.

5. The pipeline anti-collision and impact protection device according to claim 4, characterized in that, At least two groups of buffer units are arranged along the axial direction of the buffer tube, and at least two of the buffer springs are arranged circumferentially around the buffer tube for each group of buffer units.

6. The pipeline anti-collision and impact protection device according to claim 4, characterized in that, The buffer spring in the first splicing member is a tension spring, and two ends of the tension spring are connected to the inner tube and the outer tube through hooks; The buffer spring in the second splicing member is a compression spring, and two ends of the compression spring are connected to the inner tube and the outer tube by connecting studs; Wherein, the first splicing member is located above the second splicing member.

7. The pipeline anti-collision and impact protection device according to claim 1, characterized in that, At least one handle is arranged on the first splicing member and the second splicing member of each buffer tube, and the handle is arranged on the outer tube.

8. The pipeline anti-collision and impact protection device according to claim 1, wherein Support mechanisms are further arranged at opposite ends of the protective shell, and at least two mounting supports are arranged circumferentially around the outer periphery of the target pipeline for the support mechanism, and one end of the mounting support is used for connecting to a pipeline support frame, and the other end elastically abuts against the target pipeline.

9. The pipeline anti-collision and impact protection device according to claim 8, wherein The mounting support includes a mounting plate, an outer sleeve and an inner sleeve, the mounting plate is used for connecting to a pipeline support frame, the inner sleeve is sleeved between the outer sleeves, and an elastic member is arranged in the inner sleeve; One end of the inner sleeve elastically abuts against a backing plate sleeved on the outer side of the target pipeline.

10. The pipeline anti-collision and impact protection device according to claim 8, characterized in that, The support mechanism includes four of the mounting supports, and the four mounting supports are used for surrounding the outer side of the target pipeline.

11. A pipeline anti-collision and impact protection method, characterized in that, Adopting the pipeline anti-collision and impact protection device according to any one of claims 1-10, the protection method includes: Step 1, determining the position of the target pipeline; Step 2, installing a protective shell at the target pipeline; Step 3, determining whether there are pipeline support frames at both ends of the target pipeline; if there are pipeline support frames, further arranging support mechanisms at the pipeline support frames, and protecting the target pipeline through the support mechanisms and the protective shell; if there are no pipeline support frames, only using the protective shell to protect the target pipeline.

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