Conveying pipeline crack arrestor and crack arresting method

Abstract

The embodiment of the invention provides a conveying pipeline crack arrestor and a crack arresting method. The conveying pipeline crack arrestor comprises a base and a pipe cover, the base is detachably covered with the pipe cover, a cavity for containing a conveying pipeline is formed by the pipe cover and the base, the pipe cover is provided with a glue injection opening communicated with the cavity, and the glue injection opening is communicated with the pipe cover. And a glue solution bearing area is formed among the inner wall surface of the pipe cover, the inner wall surface of the base and the conveying pipeline. The injected glue solution is injected into the cavity through the glue injection opening, flows downwards under the action of gravity and fills the glue solution bearing area, the problem that the glue solution drips downwards along with the surface of the pipeline can be prevented, the glue solution is solidified in the crack area of the conveying pipeline, and the crack arrest effect is achieved. Therefore, the conveying pipeline crack arrestor has the advantages of being good in crack arresting effect and capable of reducing glue solution waste.

Description

Technical Field

[0001] The invention relates to the technical field of gas transportation, and in particular to a transportation pipeline crack arrester and a crack arrest method using the same. Background Art

[0002] Pipes are devices used to transport gas, liquid or fluids with solid particles. After being pressurized by blowers, compressors, pumps and boilers, the fluid flows from the high-pressure part of the pipeline to the low-pressure part. It can also be transported by the fluid's own pressure or gravity. After long-term use, the pipeline will crack. Once cracked, the pipeline needs to be replaced, which has the problem of high maintenance costs.

[0003] In the related art, the crack arrester of the CO2 transmission pipeline includes two sections of pipelines, the outer side walls of the two pipelines are sleeved with fixing devices fixed to the pipelines, a connecting plate is provided between the two fixing devices, a filling device for filling the cracks with glue is provided at the center of the connecting plate, a collecting device for collecting the glue is provided between the two fixing devices at the bottom of the pipeline, and then the cracks are filled with glue using the filling device. However, the glue has fluidity, and the glue that has just been filled will not condense in a short time. The glue will flow downward along the surface of the pipeline, causing the glue on both sides of the pipeline to flow downward, resulting in the problem that the cracks on both sides of the pipeline cannot be filled and the glue is wasted. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides a pipeline crack arrester. The pipeline crack arrester has the advantages of good crack arresting effect and reduced glue waste.

[0005] An embodiment of the present invention further provides a method for preventing cracks in a conveying pipeline.

[0006] The conveying pipe crack arrester of an embodiment of the present invention includes a base and a pipe cover, wherein the pipe cover is detachably covered on the base, the pipe cover and the base form a cavity for accommodating the conveying pipe, the pipe cover has a glue injection port connected to the cavity, and a glue bearing area is formed between the inner wall surface of the pipe cover, the inner wall surface of the base and the conveying pipe.

[0007] The crack arrester for the conveying pipeline of the embodiment of the present invention is provided with a base and a pipe cover, and the glue liquid is injected into the cavity through the glue injection port, and the flowing glue liquid flows downward and fills the glue liquid bearing area, which can prevent the glue liquid from flowing downward along the surface of the pipeline, so that the glue liquid solidifies in the crack area of ​​the conveying pipeline, and plays a role in crack arresting. In addition, the crack arrester for the conveying pipeline also avoids the problem that the flowing glue liquid cannot solidify in the crack area, causing the problem of crack arrest failure and the problem of glue liquid waste.

[0008] Therefore, the conveying pipeline crack arrester according to the embodiment of the present invention has the advantages of good crack arrest effect and reduced glue waste.

[0009] In some embodiments, one of the tube cover and the base has a guide groove, and the other of the tube cover and the base has a guide rail, and the guide rail is relatively movably disposed in the guide groove.

[0010] In some embodiments, there are multiple glue injection ports, and the multiple glue injection ports are arranged at intervals along the extension direction of the conveying tube.

[0011] In some embodiments, the tube cover is an arc-shaped plate, and the glue injection port is arranged in the top area of ​​the arc-shaped plate.

[0012] In some embodiments, the conveying pipeline crack stopper further includes a stopper, and the stopper is penetrated on the base and the pipe cover along a direction perpendicular to the axial direction of the conveying pipeline.

[0013] In some embodiments, the base has a first guide groove and a second guide groove, the notch of the first guide groove and the notch of the second guide groove are relatively arranged in a direction perpendicular to the axial direction of the conveying pipe, the upper side walls of the first guide groove and the second guide groove have through holes, the pipe cover is provided with a positioning hole, the stopper includes a positioning plate, a buffer spring and a limiting rod, the positioning plate has a limiting cavity, the positioning plate is arranged on the side wall, and the limiting cavity is connected to the through hole, the buffer spring and the limiting rod are arranged in the limiting cavity, and the buffer spring is arranged in the positioning hole to press the limiting rod.

[0014] In some embodiments, the conveying pipe crack arrester also includes a vibration driving component, the base includes a bottom tube and a mounting seat, a limiting cavity is formed between the bottom tube and the mounting seat, the pipe cover and the bottom tube form a cavity for accommodating the conveying pipe, the vibration driving component is rotatably arranged on the mounting seat along the extension direction of the conveying pipe, and the part of the vibration driving component located in the cavity can be knocked on the bottom tube.

[0015] In some embodiments, the vibration driving member includes a crankshaft and a knocking member, the crankshaft is rotatably disposed on the mounting seat, the knocking member is connected to the bottom tube, and the crank of the crankshaft can drive the knocking member to knock on the bottom tube.

[0016] In some embodiments, the knocking member includes a connecting rod and an arc-shaped knocking plate, a limiting guide rod is provided on the bottom tube, the arc-shaped knocking plate can be slidably passed through the limiting guide rod, and the connecting rod is connected to the side of the arc-shaped knocking plate facing the crankshaft.

[0017] In some embodiments, the arc-shaped striking plate includes a flexible buffer layer and a rigid body layer, the flexible buffer layer faces a side of the bottom tube, and the limiting guide rod is installed on the rigid body layer.

[0018] In some embodiments, the conveying pipeline crack arrester further includes a sealing gasket layer, and the sealing gasket layer is arranged between the base and the matching surface of the pipe cover.

[0019] The crack arresting method of the conveying pipeline of the embodiment of the present invention adopts any one of the above-mentioned conveying pipeline crack arresting devices; comprising the following steps:

[0020] S1. Place the base below the crack of the pipeline, fit the lower end of the pipeline with the inner wall of the base, and fix the pipe cover to the base to wrap the pipeline;

[0021] S2, injecting the glue liquid into the cavity through the glue injection port;

[0022] S3. After the glue solidifies, the tube cover and the base can be removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a crack arrester for a conveying pipeline according to an embodiment of the present invention;

[0024] Figure 2 Another stereoscopic view of the crack arrester for a conveying pipeline according to an embodiment of the present invention;

[0025] Figure 3 It is a schematic diagram of a half-section structure of the connection between the mounting rail and the mounting bar in the crack arrester for the conveying pipeline according to an embodiment of the present invention;

[0026] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 It is a schematic diagram of the half-section structure of the pipeline crack arrester in an embodiment of the present invention.

[0028] Reference numerals:

[0029] Base 1; bottom tube 11; limiting guide rod 111;

[0030] Mounting seat 12; limiting cavity 13; first guide groove 101; second guide groove 102;

[0031] Tube cover 2; glue injection port 21;

[0032] Stopper 3; positioning plate 31; buffer spring 32; limiting rod 33;

[0033] Vibration drive member 4; crankshaft 41; striking member 42; connecting rod 421; arc-shaped striking plate 422;

[0034] Sealing pad layer 5. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0036] Reference below Figure 1-Figure 5 A transmission pipeline crack arrester and a crack arrest method according to an embodiment of the present invention are described.

[0037] The conveying pipeline crack arrester of the embodiment of the present invention includes a base 1 and a pipe cover 2. The pipe cover 2 is detachably covered on the base 1. The pipe cover 2 and the base 1 form a cavity for accommodating the conveying pipeline. The pipe cover 2 has a glue injection port 21 connected to the cavity. A glue bearing area is formed between the inner wall surface of the pipe cover 2, the inner wall surface of the base 1 and the conveying pipeline.

[0038] The crack arrester for the conveying pipeline of the embodiment of the present invention is provided with a base 1 and a pipe cover 2, and the glue is injected into the cavity through the glue injection port 21. The flowing glue flows downward and fills the glue bearing area, which can prevent the glue from flowing downward along the surface of the pipeline, so that the glue solidifies in the crack area of ​​the conveying pipeline, repairs the crack of the conveying pipeline, and plays a role in crack arrest. In addition, the formed cavity can carry the glue, avoid injecting excessive glue, and avoid the problem that the flowing glue cannot solidify in the crack area, causing the problem of crack arrest failure and glue waste.

[0039] Therefore, the conveying pipeline crack arrester according to the embodiment of the present invention has the advantages of good crack arrest effect and reduced glue waste.

[0040] Optionally, the glue injection port 21 is arranged at the top of the pipe crack arrester. The base 1 and the pipe cover 2 both have arc-shaped inner wall surfaces, and the base 1 and the pipe cover 2 form a circular inner cavity.

[0041] Furthermore, the base 1 and the tube cover 2 form a circular cavity, and the cross-sectional area of ​​the circular cavity is 2 mm-3 mm larger than the cross-sectional area of ​​the delivery tube.

[0042] like Figure 2 and Figure 3 As shown, one of the tube cover 2 and the base 1 has a guide groove, and the other of the tube cover 2 and the base 1 has a guide rail, and the guide rail is relatively movably arranged in the guide groove. It can be understood that the tube cover 2 has a guide groove and the base 1 has a guide rail; or the base 1 has a guide groove and the tube cover 2 has a guide rail.

[0043] In the pipeline crack arrester of the embodiment of the present invention, the pipe cover 2 and the base 1 are matched through the guide groove and the guide rail. Therefore, the pipeline crack arrester improves the convenience of the installation process and the stability of the structure.

[0044] Specifically, during installation, the pipe cover 2 and the base 1 are staggered and placed through the corresponding cooperation between the guide groove and the guide rail, and the detachable pipe cover 2 is pushed along the pipeline to move to the upper end of the base 1.

[0045] like Figures 1 to 3 As shown, there are multiple glue injection ports 21, and the multiple glue injection ports 21 are arranged at intervals along the extension direction of the conveying pipe. By providing multiple glue injection ports 21, the problem of poor glue distribution uniformity caused by the glue not flowing after solidification in a certain area can be avoided. Therefore, the conveying pipe crack arrester of the embodiment of the present invention helps to improve the distribution uniformity of the glue layer.

[0046] The pipeline crack arrester of the embodiment of the present invention performs glue filling treatment on the cracks, such as scraping off the unsightly glue liquid after the filling, so as to collect the glue liquid, thereby preventing the glue liquid from being wasted after the scraping. In addition, the effect of uniformly filling the glue liquid is achieved, making the filled glue liquid more beautiful, thereby improving the aesthetics of the pipeline crack repair.

[0047] like Figures 1 to 3 As shown, the pipe cover 2 is an arc-shaped plate, and the glue injection port 21 is arranged in the top area of ​​the arc-shaped plate.

[0048] Furthermore, the pipe cover 2 can be a semicircular plate. Therefore, the pipeline crack arrester of the embodiment of the present invention can improve the convenience of installation.

[0049] like Figure 2 and Figure 3 As shown, the pipeline crack arrester of the embodiment of the present invention further includes a stopper 3, and the stopper 3 is penetrated on the base 1 and the pipe cover 2 along a direction perpendicular to the axial direction of the pipeline.

[0050] The pipeline crack arrester of the embodiment of the present invention can prevent the base 1 and the pipe cover 2 from moving in the axial direction of the pipeline by providing a stopper 3 penetrating the base 1 and the pipe cover 2. Therefore, the pipeline crack arrester of the embodiment of the present invention has the advantage of improving structural stability.

[0051] like Figure 2 and Figure 3As shown, the base 1 has a first guide groove 101 and a second guide groove 102, the notches of the first guide groove 101 and the notches of the second guide groove 102 are relatively arranged in a direction perpendicular to the axial direction of the conveying pipe, the upper side walls of the first guide groove 101 and the second guide groove 102 are provided with through holes, the pipe cover 2 is provided with a positioning hole, the stopper 3 includes a positioning plate 31, a buffer spring 32 and a limiting rod 33, the positioning plate 31 has a limiting cavity 13, the positioning plate 31 is arranged on the side wall, and the limiting cavity 13 is connected to the through hole, the buffer spring 32 and the limiting rod 33 are arranged in the limiting cavity 13, and the buffer spring 32 is inserted into the positioning hole toward the compression limiting rod 33.

[0052] The pipeline crack stopper of the embodiment of the present invention has a first guide groove 101 and a second guide groove 102 through the base 1, and the notch of the first guide groove 101 and the notch of the second guide groove 102 are arranged opposite to each other in a direction perpendicular to the axial direction of the pipeline, and the position of the pipe cover 2 can be limited by the side walls of the first guide groove 101 and the second guide groove 102. Therefore, the pipeline crack stopper has the advantages of simple structure and good stability.

[0053] In addition, the stopper 3 includes a positioning plate 31, a buffer spring 32 and a limiting rod 33. The positioning plate 31 has a limiting cavity 13. The positioning plate 31 is arranged on the side wall, and the limiting cavity 13 is communicated with the through hole. The buffer spring 32 and the limiting rod 33 are arranged in the limiting cavity 13, and the buffer spring 32 is arranged in the positioning hole toward the pressing limiting rod 33, so that the position of the pipe cover 2 can be limited by the limiting rod 33, and the pipe cover 2 does not need to be controlled during the guiding and matching process between the pipe cover 2 and the base 1. Therefore, the pipeline crack stopper has the advantage of high convenience in operation.

[0054] Furthermore, a portion of the limiting rod 33 extends out of the limiting cavity 13 to form a lifting portion. When the pipe cover is removed, the limiting rod 33 can be lifted upward to disengage the limiting rod 33 from the positioning hole.

[0055] like Figure 3 and Figure 5 As shown, the pipeline crack arrester of the embodiment of the present invention also includes a vibration driving component 4, the base 1 includes a bottom tube 11 and a mounting seat 12, a limiting cavity 13 is formed between the bottom tube 11 and the mounting seat 12, the pipe cover 2 and the bottom tube 11 form a cavity for accommodating the conveying pipeline, the vibration driving component 4 is rotatably arranged on the mounting seat 12 along the extension direction of the conveying pipeline, and the part of the vibration driving component 4 located in the cavity can be knocked on the bottom tube 11.

[0056] The pipeline crack arrester of the embodiment of the present invention can control the vibration driving member 4 to rotate and knock the base 1 when adding glue liquid, thereby playing the role of compacting the glue liquid and preventing the formation of holes, so that the glue liquid can fully seal the cracks in the pipeline. Therefore, the pipeline crack arrester of the embodiment of the present invention has the advantage of good crack arrest effect.

[0057] like Figure 3 and Figure 5 As shown, the vibration driving member 4 includes a crankshaft 41 and a knocking member 42 . The crankshaft 41 is rotatably installed on the mounting seat 12 . The knocking member 42 is connected to the bottom tube 11 . The crank of the crankshaft 41 can drive the knocking member 42 to knock on the bottom tube 11 .

[0058] The pipeline crack arrester of the embodiment of the present invention divides the vibration driving member 4 into a crankshaft 41 and a knocking member 42. The crankshaft 41 is rotatably installed on the mounting seat 12. The matching relative structural stability of the crankshaft 41 and the knocking member 42 is high and the knocking effectiveness is good.

[0059] like Figure 3 and Figure 5 As shown, the knocking member 42 includes a connecting rod 421 and an arcuate knocking plate 422 , a limiting guide rod 111 is provided on the bottom tube 11 , the arcuate knocking plate 422 is slidably passed through the limiting guide rod 111 , and the connecting rod 421 is connected to the side of the arcuate knocking plate 422 facing the crankshaft 41 .

[0060] The pipeline crack arrester of the embodiment of the present invention divides the knocking member 42 into a connecting rod 421 and an arc-shaped knocking plate 422. The arc-shaped knocking plate 422 can increase the knocking area of ​​the knocking member 42 on the bottom pipe 11, thereby avoiding the deformation of the bottom pipe 11 due to knocking. In addition, the arc-shaped knocking plate 422 can be slidably arranged on the limiting guide rod 111, thereby avoiding the problem of the arc-shaped knocking plate 422 being deflected during the knocking process, thereby making the arc-shaped knocking plate 422 vibrate only in the up-and-down direction, which can effectively compact the hole.

[0061] Optionally, the limiting guide rod 111 extends in the up-down direction.

[0062] The arc-shaped striking plate 422 includes a flexible buffer layer and a rigid body layer. The flexible buffer layer faces one side of the bottom tube 11 , and the limiting guide rod 111 is installed on the rigid body layer.

[0063] The pipeline crack arrester of the embodiment of the present invention divides the arc-shaped striking plate 422 into a flexible buffer layer and a rigid body layer. The rigid body layer can play a good fixing role for the connecting rod 421, while the flexible buffer layer can play a buffering role when impacting the bottom pipe 11.

[0064] like Figure 1 and Figure 4As shown, the pipeline crack arrester of the embodiment of the present invention further comprises a sealing pad layer 5, and the sealing pad layer 5 is arranged between the mating surfaces of the base 1 and the pipe cover 2. Therefore, the pipeline crack arrester has the advantage of good sealing effect.

[0065] The crack arresting method of the conveying pipeline of the embodiment of the present invention adopts any one of the above-mentioned conveying pipeline crack arresting devices; comprising the following steps:

[0066] S1. Place the base 1 below the crack of the pipeline, fit the lower end of the pipeline with the inner wall of the base 1, and fix the pipe cover 2 and the base 1 to wrap the pipeline;

[0067] S2, injecting the glue into the cavity through the glue injection port 21;

[0068] S3. When the glue solidifies, the tube cover 2 and the base 1 can be removed.

[0069] Therefore, the crack prevention method for the conveying pipeline according to the embodiment of the present invention has the advantages of good crack prevention effect and reduced glue waste.

[0070] Furthermore, the crack prevention method of the conveying pipeline according to the embodiment of the present invention comprises the following steps:

[0071] S1. Place the base 1 under the pipe, with the lower end of the pipe fitting against the inner wall of the base 1, and the pipe cover 2 is placed above the surface of the pipe, with the pipe cover 2 and the base 1 staggered;

[0072] S2. Push the pipe cover 2 along the pipeline, and the pipe cover 2 slides to the upper end of the base 1. The limiting rods 33 at both ends of the pipe cover 2 are inserted into the inside of the mounting rail. When the limiting rods 33 contact the pipe cover 2, the limiting rods 33 are squeezed into the inside of the mounting groove to compress the reset spring. When the pipe cover 2 is completely connected to the base 1, the limiting rods 33 pop out under the action of the reset spring and are inserted into the positioning hole, so that the pipe cover 2 is connected to the base 1.

[0073] S3, the glue is injected into the inner part of the curved surface of the tube cover 2 through the glue injection port 21 in the middle. When the glue comes out through the glue injection ports 21 on both sides, it indicates that the glue is completely filled;

[0074] S4, when adding glue, the vibration driving member 4 is rotated by turning the handle, and the crankshaft 41 is driven to rotate by the turning handle. The crankshaft 41 drives the arc-shaped knocking plate 422 to move up and down repeatedly along the limit guide rod 111 through the connecting rod 421. The arc-shaped knocking plate 422 can knock the inner wall of the bottom tube 11, so that the bottom tube 11 vibrates, and the glue in the cavity is compacted to prevent the formation of holes;

[0075] S5. After the glue solidifies, the positioning plate 31 is moved upward, and the positioning plate 31 drives the limiting rod 33 to move upward through the pull rod. The limiting rod 33 is pulled out from the positioning hole, and the guide rail can be pulled out from the guide groove, so that the base 1 is separated from the pipe cover 2 for turnover use.

[0076] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0077] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0078] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0080] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0081] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A pipeline crack arrester, It is characterized in that include: A base and a tube cover, wherein the tube cover is detachably covered on the base, the tube cover and the base form a cavity for accommodating a delivery pipe, the tube cover has a glue injection port connected to the cavity, and a glue bearing area is formed between the inner wall surface of the tube cover, the inner wall surface of the base and the delivery pipe.

2. The pipeline crack arrester according to claim 1, It is characterized in that One of the tube cover and the base is provided with a guide groove, and the other of the tube cover and the base is provided with a guide rail, and the guide rail is relatively movably arranged in the guide groove; And / or, there are a plurality of the glue injection ports, and the plurality of the glue injection ports are arranged at intervals along the extension direction of the delivery pipe; And / or, the tube cover is an arc-shaped plate, and the glue injection port is arranged in the top area of ​​the arc-shaped plate.

3. The pipeline crack arrester according to claim 2, It is characterized in that It also includes a stopper, which is arranged on the base and the pipe cover along a direction perpendicular to the axial direction of the conveying pipe.

4. The pipeline crack arrester according to claim 3, It is characterized in that The base has a first guide groove and a second guide groove, the notch of the first guide groove and the notch of the second guide groove are arranged relative to each other in a direction perpendicular to the axial direction of the conveying pipe, the upper side walls of the first guide groove and the second guide groove are provided with through holes, the pipe cover is provided with a positioning hole, the stopper includes a positioning plate, a buffer spring and a limit rod, the positioning plate has a limit cavity, the positioning plate is arranged on the side wall, and the limit cavity is connected with the through hole, the buffer spring and the limit rod are arranged in the limit cavity, and the buffer spring is arranged in the positioning hole to press the limit rod.

5. The pipeline crack arrester according to claim 1, It is characterized in that It also includes a vibration driving component, the base includes a bottom tube and a mounting seat, a limiting cavity is formed between the bottom tube and the mounting seat, the pipe cover and the bottom tube form a cavity for accommodating the conveying pipe, the vibration driving component is rotatably arranged on the mounting seat along the extension direction of the conveying pipe, and the part of the vibration driving component located in the cavity can knock on the bottom tube.

6. The pipeline crack arrester according to claim 5, It is characterized in that The vibration driving member comprises a crankshaft and a knocking member, wherein the crankshaft is rotatably arranged on the mounting seat, and the knocking member is connected to the bottom tube, and the crank of the crankshaft can drive the knocking member to knock on the bottom tube.

7. The pipeline crack arrester according to claim 6, It is characterized in that The knocking member includes a connecting rod and an arc-shaped knocking plate. A limiting guide rod is provided on the bottom tube. The arc-shaped knocking plate is slidably inserted into the limiting guide rod. The connecting rod is connected to a side of the arc-shaped knocking plate facing the crankshaft.

8. The pipeline crack arrester according to claim 7, It is characterized in that The arc-shaped striking plate comprises a flexible buffer layer and a rigid body layer, the flexible buffer layer faces one side of the bottom tube, and the limiting guide rod is installed on the rigid body layer.

9. The pipeline crack arrester according to any one of claims 1 to 8, It is characterized in that It also includes a sealing gasket layer, which is arranged between the base and the matching surface of the tube cover.

10. A method for preventing cracks in a conveying pipeline. It is characterized in that A pipeline crack arrester according to any one of claims 1 to 9 is used; comprising the following steps S1. Place the base below the crack of the pipeline, fit the lower end of the pipeline with the inner wall of the base, and fix the pipe cover to the base to wrap the pipeline; S2, injecting the glue liquid into the cavity through the glue injection port; S3. After the glue solidifies, the tube cover and the base can be removed.

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