Pipe-soil Interaction Test Device

Abstract

This specification provides a pipe-soil interaction test device, comprising: a test pipe; a test tank having an accommodation chamber, with a first hole groove provided on the wall surface of the test tank; a baffle mechanism for blocking the first hole groove, the baffle mechanism being arranged outside the accommodation chamber, and the baffle mechanism being provided with a second hole groove communicating with the first hole groove for the end of the test pipe to pass through; a power mechanism, including: a power source assembly; a traction assembly connected to the baffle mechanism and / or the test pipe, and the connection position being outside the accommodation chamber, and driven by the power source assembly, the traction assembly can drive the test pipe to move. This application can reduce the error items in the test and improve the test accuracy.

Description

Technical Field

[0001] The present application relates to the technical field of marine pipeline engineering, and in particular to a pipe-soil interaction testing device. Background Art

[0002] Submarine oil and gas mixed transmission pipelines are important equipment in underwater production systems. Mixed transmission pipelines are often laid bare on the seabed or buried in the seabed soil. The pipelines transport high-temperature and high-pressure oil, gas and water mixtures. Due to the high-temperature and high-pressure mixed transmission body inside the pipeline, huge axial thermal stress is applied to the pipeline, causing the pipeline to lateral buckle to release the huge thermal stress. This thermal buckling often causes large deformation of the pipeline, damages the pipeline structure, and squeezes the surrounding soil. The soil exerts soil resistance on the pipeline, making it unable to deform freely, and generates additional stress inside the pipeline. As this stress continues to accumulate, the pipeline will deform in the direction with less restraint, that is, it has a tendency to buckle.

[0003] It can be seen that the constraint of soil on pipeline is an important factor in maintaining pipeline stability. Therefore, the ability of soil to resist the movement of pipeline is an important indicator for judging whether the pipeline has undergone sudden bending change and determining the post-buckling shape. It can be seen that in-depth research on the mechanism of pipe-soil interaction and soil resistance is of great practical significance for predicting and preventing sudden buckling of pipelines.

[0004] When conducting pipe-soil test, the test pipe is buried in the mud of the test tank, and baffles are set at both ends of the test pipe along its axial direction to prevent mud from leaking out by abutting against the inner wall of the test tank during lateral movement. One end of the V-shaped steel rod is connected to the test pipe, and the other end is connected to the tension and pressure sensor. The other end of the tension and pressure sensor is connected to the force-applying device. The test pipe and the baffle are pulled by the force-applying device to move, and the force of the mud on the test pipe is measured by the tension and pressure sensor in the process.

[0005] During the above test, since the V-shaped steel rod connecting the test pipe is partially buried in the mud, the movement of the steel rod will disturb the soil before the test pipe is moved, affecting the accuracy of the measurement results. In addition, during the movement of the test pipe, the baffle will move together. Since the baffle is in direct contact with the wall of the test tank and the sand, corresponding friction will be generated during the movement. At this time, the result of the soil resistance measurement will be biased, increasing the error of the test result.

[0006] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of this specification and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of this specification. Summary of the invention

[0007] To solve at least one technical problem existing in the prior art, the present application provides a pipe-soil interaction test device, which can reduce the test error term and improve the test accuracy.

[0008] To achieve the above object, the technical solution provided by the present application is as follows:

[0009] A pipe-soil interaction test device includes:

[0010] A test pipe;

[0011] A test tank having an accommodation chamber, and a first hole groove is provided on the wall surface of the test tank;

[0012] A baffle mechanism for blocking the first hole groove, the baffle mechanism is arranged outside the accommodation chamber, and the baffle mechanism is provided with a second hole groove communicating with the first hole groove for the end of the test pipe to pass through;

[0013] A power mechanism, including: a power source assembly; a traction assembly connected to the baffle mechanism and / or the test pipe, and the connection position is outside the accommodation chamber. Driven by the power source assembly, the traction assembly can drive the test pipe to move.

[0014] As a preferred embodiment, the traction assembly includes: a first connecting rod connected to the baffle mechanism; a second connecting rod connected to the test pipe; the first connecting rod and the second connecting rod move synchronously under the drive of the power source assembly.

[0015] As a preferred embodiment, the traction assembly includes: a first driving plate connected to the first connecting rod; a second driving plate connected to the second connecting rod; a tensile and compressive force sensor for connecting the first driving plate and the second driving plate; a traction slider connected to the first driving plate; a traction slide rail cooperating with the traction slider.

[0016] As a preferred embodiment, the baffle mechanism includes: a first baffle and a second baffle, the second baffle is used to fit the first hole groove of the test tank, the second baffle is provided with a first observation part, the first baffle is provided with a connecting piece for connecting the traction assembly; a fixing part arranged between the first baffle and the second baffle.

[0017] As a preferred embodiment, the test tank includes: a side plate having a second observation part, the second observation part corresponds to the first observation part, and the first hole groove is opened on the side plate.

[0018] As a preferred embodiment, the first hole groove is an L-shaped structure.

[0019] As a preferred embodiment, the test device includes: a guiding slider fixedly connected to the baffle mechanism; a guiding slide rail fixedly arranged relative to the guiding slider, and the guiding slide rail has a first state in which its extending direction is parallel to the lateral extending direction of the L-shaped structure and a second state in which its extending direction is parallel to the vertical extending direction of the L-shaped structure.

[0020] As a preferred embodiment, the traction assembly includes a first traction assembly and a second traction assembly. The first traction assembly is used to pull the baffle mechanism and the test pipeline to move along the lateral extending direction of the L-shaped structure, and the second traction assembly is used to pull the baffle mechanism and the test pipeline to move along the vertical extending direction of the L-shaped structure.

[0021] As a preferred embodiment, the test device includes an outer frame, and the outer frame includes: a first frame for installing the first traction assembly; a second frame for installing the second traction assembly; a first displacement sensor is arranged on the first frame, and a second displacement sensor is arranged on the second frame, and the first displacement sensor and the second displacement sensor are used to measure the displacement of the test pipeline.

[0022] As a preferred embodiment, the power source assembly includes: a motor having an output shaft; a coupling connected to the output shaft; a drum provided with a pulling rope, the drum is connected to the coupling, and the pulling rope is connected to the traction assembly; the first frame is provided with a pulley bracket and a pulley for guiding the pulling rope.

[0023] Beneficial effects:

[0024] The pipe-soil interaction test device provided by the embodiment of the present application drives the test pipeline to move through the traction assembly. The traction assembly is connected to the baffle mechanism and / or the test pipeline, and the connection position is located outside the test tank, avoiding the influence of the force between the components at the connection position and the sediment on the measurement result. Moreover, the baffle mechanism is also located outside the test tank, simultaneously avoiding the end effect of the test pipeline and the interference of the baffle mechanism on the sediment, reducing the error items of the test, and improving the test accuracy.

[0025] When the traction assembly is connected to the baffle mechanism and the test pipeline, the traction assembly can drive the synchronous movement of the baffle mechanism and the test pipeline under the drive of the power source assembly, so as to avoid the generation of mutual forces between the baffle mechanism and the test pipeline, and avoid affecting the test result.

[0026] With reference to the following description and the accompanying drawings, specific embodiments of the present application are disclosed in detail, indicating the ways in which the principles of the present application can be employed. It should be understood that the embodiments of the present application are not limited in scope thereby.

[0027] Features described and / or illustrated for one embodiment can be used in the same or similar way in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0028] It should be emphasized that the term "comprising / including" when used herein refers to the presence of features, whole things, steps or components, but does not exclude the presence or addition of one or more other features, whole things, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 Structural schematic diagram of the pipe-soil interaction test device provided for the embodiments of this specification;

[0031] Figure 2 Front view of the pipe-soil interaction test device provided for the embodiments of this specification;

[0032] Figure 3 Top view of the pipe-soil interaction test device provided for the embodiments of this specification;

[0033] Figure 4 Structural schematic diagram of the outer frame provided for the embodiments of this specification;

[0034] Figure 5 Structural schematic diagram of the baffle mechanism provided for the embodiments of this specification;

[0035] Figure 6 Front view of the baffle mechanism provided for the embodiments of this specification;

[0036] Figure 7 Top view of the baffle mechanism provided for the embodiments of this specification;

[0037] Figure 8 Structural schematic diagram of the traction assembly provided for the embodiments of this specification;

[0038] Figure 9 Top view of the traction assembly provided for the embodiments of this specification;

[0039] Figure 10 This is the front view of the traction assembly provided by the embodiment of this specification;

[0040] Figure 11 This is the left view of the traction assembly provided by the embodiment of this specification;

[0041] Figure 12 This is the structural schematic diagram of the power source assembly provided by the embodiment of this specification;

[0042] Figure 13 This is the structural schematic diagram of the test tank provided by the embodiment of this specification.

[0043] Explanation of reference numerals in the drawings:

[0044] 1. Outer frame; 11. Middle horizontal frame; 12. Middle short horizontal frame; 13. Vertical traction slide rail base; 14. Middle vertical square steel; 15. Diagonal brace; 16. Middle horizontal bottom; 17. Second displacement sensor bracket; 18. Slide rail cross brace; 19. Motor side frame; 110. Short bracket; 111. Vertical frame; 112. Short motor base; 113. Motor connection seat; 114. Head cross brace; 115. Connection brace; 116. Bearing seat; 117. Bearing seat base; 118. Pulley bracket; 119. Pulley; 120. First displacement sensor bracket; 121. Sealing frame; 122. Front cross frame; 123. Middle cross brace;

[0045] 2. Test tank; 21. Body; 22. Side plate; 23. First hole slot;

[0046] 3. Baffle mechanism; 31. First baffle; 32. Guide slider; 33. Guide slide rail; 34. Second hole slot; 35. Connector; 36. Second baffle; 37. L-shaped top plate; 38. L-shaped side plate fixing;

[0047] 4. Traction assembly; 41. First connecting rod; 42. Second connecting rod; 43. Tensile and compressive force sensor; 44. Second driving plate; 45. First driving plate; 46. Traction slider; 47. Traction slide rail;

[0048] 5. Power source assembly; 51. Motor; 52. Coupling; 53. Bearing seat; 54. Drum. Detailed implementation manners

[0049] Next, in combination with the drawings and specific implementation manners, the technical solutions of the present invention will be described in detail. It should be understood that these implementation manners are only used to illustrate the present invention and not to limit the scope. After reading the present invention, those skilled in the art's various equivalent modifications of the present invention all fall within the scope defined by this application.

[0050] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0051] The following will be combined with Figures 1 to 13 The pipe-soil interaction test device of the embodiments of this specification will be explained and described. It should be noted that for the convenience of description, in the embodiments of the present invention, the same reference numerals represent the same components. For the sake of brevity, in different embodiments, the detailed description of the same components is omitted, and the descriptions of the same components can be referred to and cited with each other.

[0052] Specifically, taking the Figure 1 shown orientation as a reference, the Figure 1 upward direction shown in Figure 1 is defined as "upper", the Figure 1 downward direction shown in Figure 1 is defined as "lower", the direction facing the reader in Figure 1 is "front", the direction facing away from the reader in Figure 1 is "rear", the

[0053] rightward direction shown in

[0054] is defined as "right", and the Figures 1 to 13 leftward direction shown in

[0055] Figure 1 is defined as "left". It should be understood that these orientations of "upper", "lower", "front", "rear", "left", and "right" are defined for convenience of description. However, these terms expressing relative positional relationships are not restrictive and absolute. The embodiments described below with reference to the drawings are exemplary and are intended to explain this specification and should not be construed as a limitation on the embodiments of this specification.

[0053] Generally speaking, submarine pipelines are prone to generate large axial stresses under high-temperature and high-pressure working environments, and thus buckling occurs. Submarine pipeline buckling is mainly divided into two types: vertical buckling and lateral buckling. This pipe-soil interaction test device can obtain the relationship between soil resistance and pipeline displacement by exploring lateral pipe-soil interaction, vertical pipe-soil interaction, and axial pipe-soil interaction. Specifically, by driving the pipeline to move laterally, vertically, and axially to obtain the pipeline displacement, and recording the soil resistance during this process.

[0054] As Figures 1 to 13 shown, this specification provides a pipe-soil interaction test device, including: a test pipeline, a test tank 2, a baffle mechanism 3, and a power mechanism.

[0055] The test tank 2 has a body 21, and the body 21 is provided with a containing chamber for filling mud and sand. A first hole groove 23 is provided on the wall of the test tank 2 for the test pipe to extend out. The test pipe is an axial structure, which has two opposite ends, namely a first end and a second end. Corresponding to the structure of the test pipe, there can be two first holes 23, which are respectively provided on two opposite walls of the test tank 2. During the test, the test pipe can be passed into the test tank 2 through one first hole groove 23, and pass out of the test tank 2 from another first hole groove 23, and the ends of the test pipe are both located outside the containing chamber.

[0056] In this way, the disturbance of sediment by the end effect of the test pipe can be avoided. The end effect is that during the movement of the pipe, part of the soil around the end will be disturbed at the same time. Since the soil is disturbed, the original existing form of the soil is destroyed, thereby affecting the force on the pipe. In order to avoid this effect, a first hole groove 23 is set on the wall of the test tank 2 to allow the two ends of the test pipe to extend.

[0057] When the test pipe moves axially, it moves from the first end to the second end, that is, along Figure 1 When the test pipe moves vertically, it moves along the height direction of the test tank 2, that is, along Figure 1 When the test pipe moves sideways, it moves in a direction perpendicular to the height direction and the axial direction, that is, along the Figure 1 Left and right movement as shown.

[0058] The first hole groove 23 has a certain extension direction, which at least ensures that the test pipe can move laterally or vertically. In one embodiment, the first hole groove 23 is an L-shaped structure, so that the first hole groove 23 has both a lateral extension direction and a vertical extension direction, and the lateral extension direction enables the test pipe to move laterally, and the vertical extension direction enables the test pipe to move vertically. Of course, in other possible embodiments, the first hole groove 23 can be other types of structures, not limited to the L-shaped structure.

[0059] Due to the presence of the first hole groove 23 on the wall of the test tank 2, the sand filled in the test tank 2 will leak out of the hole groove, affecting the test process. Therefore, it is necessary to block the first hole groove 23 to prevent the sand from leaking out of the hole groove, while not affecting the movement of the test pipe. Figures 5 to 7As shown, by providing a baffle mechanism 3 to block the first hole slot 23, the baffle mechanism 3 is arranged outside the accommodation chamber and is provided with a second hole slot 34 communicating with the first hole slot 23 for the end of the test pipeline to pass through. During the test, by driving at least one of the baffle mechanism 3 and the test pipeline, the baffle mechanism 3 and the test pipeline can be driven together so that when the test pipeline moves, the baffle mechanism 3 blocks the first hole slot 23 to prevent sediment from leaking out.

[0060] In this embodiment, by arranging the baffle mechanism 3 outside the test tank 2 and providing a second hole slot 34 on the baffle mechanism 3, the test pipeline can axially move by passing through the first hole slot 23 and the second hole slot 34 in sequence without any axial restriction. The second hole slot 34 is specifically a circular hole, and its size matches that of the test pipeline. When the test pipeline passes through the second hole slot 34, the part communicating with the first hole slot 23 has been blocked by the test pipeline. The size of the baffle mechanism 3 needs to be larger than the first hole slot 23 to always keep the first hole slot 23 blocked during the movement.

[0061] At the same time, the baffle mechanism 3 is arranged outside the accommodation chamber, so it will not have direct contact with the sediment in the test tank 2. There will also be no frictional force with the sediment during the movement, which can reduce the error terms of the test. Corresponding to the first hole slot 23, two baffle mechanisms 3 can be provided to respectively block the first hole slots 23 on both sides of the test tank 2.

[0062] As Figures 1 to 3 shown, the power mechanism includes: a power source assembly 5; a traction assembly 4 connected to the baffle mechanism 3 and / or the test pipeline, and the connection position is located outside the accommodation chamber. Driven by the power source assembly 5, the traction assembly 4 can drive the test pipeline to move. When the traction assembly 4 is connected to the baffle mechanism 3 or the test pipeline, there must be a connection position between the two. Compared with the common situation where the components connecting the test pipeline are also partially buried in the sediment, there must be a certain resistance to the steel pipe by the sediment in the vertical and lateral displacement directions, introducing error terms into the test process. However, in this application, by setting the connection position outside the accommodation chamber, the influence of the force between the components at the connection position and the sediment on the measurement result can be avoided.

[0063] In this embodiment, as Figures 8 to 11 shown, the traction assembly 4 includes: a first connecting rod 41 connected to the baffle mechanism 3; a second connecting rod 42 connected to the test pipeline; the first connecting rod 41 and the second connecting rod 42 move synchronously under the drive of the power source assembly 5.

[0064] Specifically, a connecting member 35 may be provided on the baffle mechanism 3 for connecting the first connecting rod 41. A threaded structure may be provided at the end of the first connecting rod 41, and a corresponding threaded hole is provided on the connecting member 35. The second connecting rod 42 is connected to the test pipeline. A threaded structure may be provided at the end of the second connecting rod 42, and a corresponding threaded hole is provided at the end of the test pipeline.

[0065] If only the test pipeline or only the baffle mechanism 3 is driven to move, although the baffle mechanism 3 and the test pipeline as a whole can be driven to move, compared with only driving the test pipeline to move, the overall weight will increase. Moreover, due to the existence of the second hole groove 34, there will inevitably be extrusion between the baffle mechanism 3 and the test pipeline. The above factors lead to errors in the test results. To eliminate these errors, in this embodiment, the baffle mechanism 3 and the test pipeline are respectively pulled by the first connecting rod 41 and the second connecting rod 42, and the first connecting rod 41 and the second connecting rod 42 move synchronously to drive the baffle mechanism 3 and the test pipeline to move synchronously. Compared with the method of driving the whole by driving the test pipeline alone or driving the baffle mechanism 3 alone, the mutual force between the baffle mechanism 3 and the test pipeline can be avoided, and the influence on the test results can be avoided.

[0066] Furthermore, corresponding to the number of the baffle mechanisms 3, two first connecting rods 41 and two second connecting rods 42 are respectively provided, that is, the two first connecting rods 41 pull the baffle mechanisms 3 on both sides of the test groove 2 to move, and the two second connecting rods 42 pull the two ends of the test pipeline to move.

[0067] In one embodiment, as Figures 8 to 10 shown, the traction assembly 4 includes: a first driving plate 45 connected to the first connecting rod 41; a second driving plate 44 connected to the second connecting rod 42; a tensile and compressive force sensor 43 for connecting the first driving plate 45 and the second driving plate 44; a traction slider 46 connected to the first driving plate 45; and a traction slide rail 47 cooperating with the traction slider 46.

[0068] Specifically, as Figure 9 shown, the traction slider 46 is connected to the traction slide rail 47 through the opening groove on the traction slide rail 47. The first driving plate 45 is connected to the traction slider 46 by bolts. The second driving plate 44 is connected to the traction slider 46 by bolts. The tensile and compressive force sensor 43 is connected to the first driving plate 45 and the second driving plate 44 by threads. The first connecting rod 41 is connected to the first driving plate 45 and the connecting member 35 of the baffle mechanism 3 by threads. The second connecting rod 42 is connected to the second driving plate 44 and the test pipeline by threads.

[0069] Alternatively, in some possible embodiments, the traction slider 46 and the traction slide rail 47 are replaced by the transmission mode between a lead screw and a lead screw nut. The lead screw nut can drive the first drive plate 45 to move on the lead screw, and then pull the second drive plate 44 to move on the lead screw.

[0070] When the power source assembly 5 drives the first drive plate 45 to move directionally along the traction slide rail 47, the first drive plate 45 drives the baffle mechanism 3 to move through the first connecting rod 41. At the same time, the first drive plate 45 drives the second drive plate 44 to move, and the second drive plate 44 drives the test pipeline to move synchronously through the second connecting rod 42.

[0071] In this embodiment, as Figure 5 and Figure 6 shown, the baffle mechanism 3 includes: a first baffle 31 and a second baffle 36. The second baffle 36 is used to fit the first hole groove 23 of the test tank 2, and the second baffle 36 is provided with a first observation part; a fixing part arranged between the first baffle 31 and the second baffle 36. The first observation part can be a transparent window arranged on the second baffle 36 to facilitate the operator to observe the sediment form in the test tank 2. The second baffle 36 can be made of a transparent material and is arranged to fit the wall surface of the test tank 2 to block the first hole groove 23, while the first baffle 31 outside the second baffle 36 is used for positioning and connecting with the traction assembly 4.

[0072] As Figure 5 and Figure 7 shown, the fixing part can include an L-shaped top plate 37 and an L-shaped side plate fixing 38. By adjusting the position of the L-shaped top plate 37 on the L-shaped side plate fixing 38, the position of the second baffle 36 can be adjusted, so that the second baffle 36 can be closely attached to the outer wall of the test tank 2 to prevent sediment leakage, and at the same time, it is convenient to observe the change of sediment during the movement of the test pipeline. Then, the first baffle 31 is pulled by the traction assembly to drive the entire baffle mechanism 3 to move.

[0073] Corresponding to the second baffle 36, in order to be able to observe the test situation inside the test tank 2, as Figure 13 shown, the test tank 2 includes: a side plate 22 having a second observation part. The second observation part corresponds to the first observation part, and the first hole groove 23 is opened on the side plate 22. The second observation part can be a transparent window arranged on the side plate 22 and corresponds to the first observation part to facilitate the operator to observe the sediment form in the test tank 2. The side plate 22 can be made of a transparent material, can be welded to the side opening of the main body 21, and the first hole groove 23 is arranged on the side plate 22.

[0074] Further, the pipe-soil interaction test device further includes: a guiding slider 32 fixedly connected to the baffle mechanism 3; a guiding slide rail 33 fixedly arranged relative to the guiding slider 32, the guiding slide rail 33 having a first state in which its extending direction is parallel to the lateral extending direction of the L-shaped structure and a second state in which its extending direction is parallel to the vertical extending direction of the L-shaped structure.

[0075] During installation, connect the guiding slider 32 to the guiding slide rail 33 through the opening groove on the guiding slide rail 33, connect the first baffle 31 to the guiding slider 32 by bolts, connect the L-shaped side plate fixing 38 to the first baffle 31 by bolts, connect the L-shaped top plate 37 to the L-shaped side plate fixing 38 by bolts and nuts, attach the second baffle 36 to the L-shaped top plate 37, and connect the connecting member 35 to the first baffle 31 by bolts. When the guiding slide rail 33 is in the first state and its extending direction is parallel to the lateral extending direction of the L-shaped structure, when the guiding slider 32 moves along the guiding slide rail 33, the test pipe and the baffle mechanism 3 move laterally; when the guiding slide rail 33 is in the second state and its extending direction is parallel to the vertical extending direction of the L-shaped structure, when the guiding slider 32 moves along the guiding slide rail 33, the test pipe and the baffle mechanism 3 move vertically. The transformation between the first state and the second state can be achieved by directly rotating the guiding slide rail 33 by 90°.

[0076] Alternatively, in some possible embodiments, the guiding slider 32 and the guiding slide rail 33 are replaced by the transmission mode between a lead screw and a lead screw nut, and the lead screw nut can drive the entire baffle mechanism 3 to move on the lead screw.

[0077] In order to drive the test pipe to move laterally and vertically, the traction assembly 4 includes a first traction assembly and a second traction assembly. The first traction assembly is used to pull the baffle mechanism 3 and the test pipe to move along the lateral extending direction of the L-shaped structure, and the second traction assembly is used to pull the baffle mechanism 3 and the test pipe to move along the vertical extending direction of the L-shaped structure.

[0078] Specifically, the first traction assembly can be arranged in the lateral direction of the test pipe, and the second traction assembly can be arranged in the vertical direction of the test pipe. At least two connection holes can be provided at the end of the test pipe for connecting the second connecting rod 42 of the first traction assembly and the second connecting rod 42 for connecting the second traction assembly. At the same time, two connecting members 35 can be provided on the first baffle 31 of the baffle mechanism 3, one for connecting the first connecting rod 41 of the first traction assembly and the other for connecting the first connecting rod 41 of the second traction assembly.

[0079] The first traction assembly and the second traction assembly are driven by the power source assembly 5 to drive the test pipeline to move in the corresponding direction. In one embodiment, as Figure 12 shown, the power source assembly 5 includes: a motor 51 having an output shaft; a coupling 52 connected to the output shaft; a drum 54 provided with a pulling rope, the drum 54 is connected to the coupling 52, and the pulling rope is connected to the traction assembly 4.

[0080] The motor 51 can be a reduction motor or a servo motor. First, one end of the coupling 52 is connected to the output shaft of the motor 51. One end of the drum 54 can be connected with a bearing seat 53, and the other end is connected to the coupling 52. When the motor 51 rotates, it drives the drum 54 to rotate through the coupling 52. During the rotation of the drum 54, the pulling rope can be tightened, thereby pulling the first drive plate 45 in the traction assembly 4 to move. At the same time, the first drive plate 45 drives the second drive plate 44 to move, so as to drive the synchronous movement of the test pipeline and the baffle mechanism 3.

[0081] In this embodiment, as Figure 2 and Figure 4 shown, the test device further includes an outer frame 1, and the outer frame 1 includes: a first frame for installing the first traction assembly; a second frame for installing the second traction assembly; a first displacement sensor is arranged on the first frame, and a second displacement sensor is arranged on the second frame. The first displacement sensor and the second displacement sensor are used to measure the displacement of the test pipeline.

[0082] Specifically, when assembling the first frame, the short bracket 110 can be welded to the slide rail cross brace 18 and the motor side frame 19, the sealing frame 121 can be welded to the motor side frame 19, the first displacement sensor bracket 120 is bolted to the slide rail cross brace 18, the vertical frame 111 is welded to the motor side frame 19 and the front cross frame 122, the diagonal brace 15 is welded to the vertical frame 111 and the short motor seat 112, the short motor seat 112 is welded to the motor side frame 19 and the motor connecting seat 113, the head cross brace 114 is welded to the motor connecting seat 113 and the connecting brace 115, the bearing seat base 117 is welded to the motor connecting seat 113 and the connecting brace 115, the bearing seat 116 is welded to the bearing seat base 117, the pulley bracket 118 is welded to the diagonal brace 15 and the vertical frame 111, and the pulley 119 is bolted to the pulley bracket 118.

[0083] The first displacement sensor bracket 120 is used to mount the first displacement sensor. The bearing seat base 117 is used to mount the bearing seat 53 in the power source assembly 5. The slide rail cross brace 18 and the short bracket 110 are used to mount the traction slide rail 47 in the first traction assembly. Components such as the short motor base 112, the motor connection seat 113, and the head cross brace 114 cooperate to mount the motor 51 in the power source assembly 5.

[0084] The pulley bracket 118 is used to mount the pulley 119. The pulley 119 can provide a guiding function for the pulling rope on the drum 54. The pulling rope is connected to the first driving plate 45 or the tension and compression sensor 43 via the pulley 119 to pull the traction assembly 4.

[0085] When assembling the second frame, weld the diagonal brace 15 to the middle vertical square steel 14 and the middle horizontal bottom 16, weld the middle vertical square steel 14 to the middle horizontal bottom 16 and the middle short horizontal frame 12, weld the vertical traction slide rail base to the middle vertical square steel 14, connect the middle horizontal frame 11 and the middle short horizontal frame 12 by bolts, and connect the second displacement sensor bracket 17 and the middle horizontal frame 11 by bolts.

[0086] The second displacement sensor bracket 17 is used to mount the second displacement sensor. The vertical traction slide rail base is used to mount the traction slide rail 47 in the second traction assembly. After the first frame and the second frame are assembled, connect the middle horizontal frame 11 of the first frame and the front horizontal frame 122 of the second frame by bolts through the middle cross brace 123.

[0087] When it is necessary to drive the test pipeline to move laterally by using the first traction assembly, first turn on the data acquisition instrument system to ensure that the tension and compression sensor 43 and the first displacement sensor are working properly. Then start the motor 51. The rotation of the motor 51 drives the drum 54 to rotate through the coupling 52, and then pulls the first driving plate 45 in the first traction assembly to move directionally along the traction slide rail 47. The first driving plate 45 drives the baffle mechanism 3 to move through the first connecting rod 41. At the same time, the first driving plate 45 drives the second driving plate 44 to move through the tension and compression sensor 43, and the second driving plate 44 drives the test pipeline to move synchronously through the second connecting rod 42. Meanwhile, the tension and compression sensor 43 and the first displacement sensor have transmitted the real-time measured data back to the data acquisition instrument system. After the test is completed, turn off the data acquisition instrument system.

[0088] When it is necessary to drive the test pipeline to move vertically by using the second traction assembly, the pulling rope wound around the drum 54 needs to bypass the pulley bracket 118 and the pulley 119 on the second frame and then be connected to the tension and compression sensor 43 or the first driving plate 45 of the second traction assembly, and then the power source assembly 5 drives the second traction assembly to move.

[0089] When the test pipeline moves axially, remove the middle cross brace 123, remove the first connecting rod 41 and the second connecting rod 42 in the first traction assembly, and then place the second frame on one side of the test tank 2 after rotating it 90 degrees clockwise. Then take another section of wire rope, connect one end to the left end of the tensile and compressive force sensor 43 in the first traction assembly, and connect the other end to the test pipeline. Then start the power source assembly 5 to drive the first traction assembly to move axially. The wire rope connected to the left end of the tensile and compressive force sensor 43 pulls the test pipeline to move, thereby measuring the relationship between the soil resistance and the pipeline displacement.

[0090] In this embodiment, the outer frame 1 can freely combine the tests of the test pipeline in three directions: vertical, lateral, and axial. The components can be converted and used in different directions, which can reduce the test cost.

[0091] The above embodiments are only for illustrating the technical concept and features of the present application, and their purpose is to enable those who are familiar with this technology to understand the content of the present application and implement it accordingly, and should not be used to limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

[0092] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of" describing a combination should include the identified elements, components, parts, or steps, as well as other elements, components, parts, or steps that do not substantially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combinations of elements, components, parts, or steps herein also contemplates embodiments consisting essentially of these elements, components, parts, or steps. By using the term "may" herein, it is intended to indicate that any of the attributes described as "may" included are optional.

[0093] Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The disclosure of the articles "a" or "an" used to describe an element, component, part, or step does not mean to exclude other elements, components, parts, or steps.

[0094] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and many applications other than the examples provided will be apparent to those skilled in the art upon reading the above description. For the sake of comprehensiveness, all articles and references, including patent applications and published disclosures, are incorporated herein by reference.

Claims

1. A pipe-soil interaction test device, characterized in that, Comprising: A test pipeline; A test tank having a receiving chamber, with a first hole groove provided on the wall surface of the test tank; A baffle mechanism for blocking the first hole groove, the baffle mechanism being provided outside the receiving chamber, and the baffle mechanism being provided with a second hole groove communicating with the first hole groove for the end of the test pipeline to pass through; A power mechanism, including: a power source assembly; a traction assembly connected to the baffle mechanism and / or the test pipeline, and the connection position is outside the receiving chamber. Driven by the power source assembly, the traction assembly can drive the test pipeline to move; The baffle mechanism includes: a first baffle and a second baffle, the second baffle is used to fit the first hole groove of the test tank, the second baffle is provided with a first observation part, the first baffle is provided with a connecting piece for connecting the traction assembly; a fixing part provided between the first baffle and the second baffle; The first hole groove is an L-shaped structure; The test device includes: a guiding slider fixedly connected to the baffle mechanism; a guiding slide rail fixedly arranged relative to the guiding slider, and the guiding slide rail has a first state in which its extending direction is parallel to the horizontal extending direction of the L-shaped structure and a second state in which its extending direction is parallel to the vertical extending direction of the L-shaped structure; The traction assembly includes a first traction assembly and a second traction assembly. The first traction assembly is used to pull the baffle mechanism and the test pipeline to move along the horizontal extending direction of the L-shaped structure, and the second traction assembly is used to pull the baffle mechanism and the test pipeline to move along the vertical extending direction of the L-shaped structure; The test device includes an outer frame, and the outer frame includes: a first frame for installing the first traction assembly; a second frame for installing the second traction assembly; a first displacement sensor is provided on the first frame, and a second displacement sensor is provided on the second frame. The first displacement sensor and the second displacement sensor are used to measure the displacement of the test pipeline; the outer frame can freely combine the tests of the test pipeline in three directions: vertical, lateral, and axial.

2. The pipe-soil interaction test device according to claim 1, characterized in that, The traction assembly includes: a first connecting rod connected to the baffle mechanism; a second connecting rod connected to the test pipeline; the first connecting rod and the second connecting rod move synchronously under the drive of the power source assembly.

3. The soil-pipe interaction test device according to claim 2, wherein, The traction assembly includes: a first driving plate connected to the first connecting rod; a second driving plate connected to the second connecting rod; a tension and compression sensor for connecting the first driving plate and the second driving plate; a traction slider connected to the first driving plate; a traction slide rail cooperating with the traction slider.

4. The pipe-soil interaction test device according to claim 1, wherein, The test tank includes: a side plate having a second observation part, the second observation part corresponding to the first observation part, and the first hole groove is opened on the side plate.

5. The soil-pipe interaction test device according to claim 1, characterized in that, The power source assembly includes: a motor having an output shaft; a coupling connected to the output shaft; a drum provided with a pulling rope, the drum being connected to the coupling, and the pulling rope being connected to the traction assembly; the first frame is provided with a pulley bracket and a pulley for guiding the pulling rope.

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