Anti-seismic connecting device and displacement compensation method

Abstract

This invention relates to an anti-seismic connection device and displacement compensation method for connecting a first pipe and a second pipe. The device includes a flexible inner liner, a bending constraint assembly, a reversing assembly, end bearing members, and at least one closed bearing band. The flexible inner liner forms an independent fluid channel; the rigid framework of the two bending zones disperses lateral displacement into multiple small-angle rotations; and the fixed-length constraint of the closed bearing band causes the two bending zones to automatically form curvatures in opposite directions. This effectively absorbs relative lateral displacement while maintaining the pipes at both ends in a substantially parallel configuration. Simultaneously, the closed bearing band independently bears the axial load, separating the fluid sealing function from the mechanical load-bearing function. This avoids the flexible inner liner bearing both fluid pressure and axial tension simultaneously, solving the technical problems of concentrated local deformation of flexible elements, uncontrollable double curvature formation, and coupling of axial load and watertight function.

Description

Technical Field

[0001] This invention relates to the field of seismic connection technology for electromechanical pipelines in modular buildings, and specifically to a seismic connection device and displacement compensation method. Background Technology

[0002] Modular data centers typically integrate computing power, power supply and distribution, cooling and auxiliary electromechanical systems into multiple independent modules. The main equipment, pipelines and control systems are prefabricated and installed in the factory, and then transported to the project site for module assembly and system connection.

[0003] For data centers using water-cooling systems, a complete cooling circulation system needs to be established between adjacent modules through cooling water supply and return pipes; the main cooling water pipes inside the modules are usually made of steel, stainless steel or other rigid metal pipes; after the modules are assembled on site, the rigid cooling water pipes in adjacent modules need to cross the module boundary area to form a connection.

[0004] Under normal operating conditions, the rigid tubes on both sides are basically coaxial or nearly coaxial. However, under seismic action, adjacent modules may be misaligned vertically, horizontally or obliquely due to differences in their inertial response, support conditions, connection deformation and structural vibration characteristics.

[0005] Since the rigid pipes on both sides are fixed inside their respective modules, when an earthquake causes the two modules to shift relative to each other, the rigid pipes on both sides usually maintain the original posture of their respective modules, and their pipe axes may still be basically parallel, but their spatial positions have been misaligned. Therefore, the real problem faced by the connection of cooling water pipes between modules is not simply the deflection of the pipe angle, but the lateral misalignment between the two rigid pipes whose end postures remain basically unchanged.

[0006] If two rigid pipes are directly connected using ordinary flanges, short rigid pipes, or other rigid methods, when the module undergoes relative lateral displacement, the displacement will be concentrated into shear force, bending moment, and local tensile force at the connection point, which can easily cause weld cracking, short pipe bending, flange damage, and seal failure. For data centers, cooling water leakage may not only cause cooling system failure but may also endanger servers, UPS, power distribution equipment, and other critical equipment.

[0007] Existing engineering projects typically use rubber flexible joints, metal corrugated compensators, flexible hoses, ball joints, sliding joints, or multi-joint pipe connection structures to absorb displacement. These structures can achieve a certain degree of axial expansion, angular displacement, or lateral offset, but they still have problems such as concentrated local deformation of flexible elements, lack of passive coupling between the two bending areas, excessive mechanical functions of flexible seals, and difficulty in controlling the end posture.

[0008] Therefore, it is necessary to propose a seismic connection device that can mechanically couple two curved regions, absorb lateral displacement while keeping the rigid tubes at both ends essentially parallel, and separate the fluid sealing function from the main mechanical load-bearing function. Summary of the Invention

[0009] The purpose of this invention is to overcome the defects of the prior art and provide a seismic connection device and displacement compensation method to solve the problems of deformation concentration, uncontrollable hypercurvature formation, axial load and watertight function coupling, and insufficient adaptability to multi-directional misalignment when two rigid tubes are laterally misaligned due to earthquakes in the prior art.

[0010] To achieve the above objectives, the present invention provides a seismic connection device and a displacement compensation method for connecting a first pipeline and a second pipeline, characterized in that it includes: The flexible inner liner has its two ends sealed to the first pipe and the second pipe respectively, forming a continuous fluid channel; A bending constraint component is disposed on the periphery of the flexible inner liner, including a first bending area and a second bending area arranged sequentially along the axial direction of the flexible inner liner. Each of the first bending area and the second bending area includes at least two rigid frames arranged around the flexible inner liner, and the adjacent rigid frames can rotate relative to each other. A reversing assembly is disposed between the first bending region and the second bending region; The end bearing members are respectively located at the end of the first bending zone away from the reversing assembly and at the end of the second bending zone away from the reversing assembly; And at least one closed load-bearing band, which forms a closed path along the end load-bearing member, the first bending zone, the reversing assembly and the second bending zone; The closed path is configured to extend along the first circumferential side in the first bending zone, be redirected by a reversing assembly to the second circumferential side in the second bending zone opposite to the first circumferential side, and return to the first bending zone via the reversing assembly; when the first pipe and the second pipe undergo lateral relative displacement, the fixed-length constraint of the closed bearing band causes the first bending zone and the second bending zone to form bends in opposite directions to absorb the lateral relative displacement; the closed bearing band also constitutes an axial force transmission path independent of the flexible inner liner, used to bear at least part of the axial load generated by the internal pressure of the flexible inner liner.

[0011] By adopting this technical solution, an independent fluid channel is formed through the flexible inner liner, the lateral displacement is dispersed into multiple small-angle rotations through the rigid skeleton of the two bending zones, and the fixed-length constraint of the closed load-bearing band causes the two bending zones to automatically form curvatures in opposite directions. This effectively absorbs relative lateral displacement while keeping the pipes at both ends basically parallel. At the same time, the closed load-bearing band independently bears the axial load from the flexible inner liner, separating the fluid sealing function from the mechanical load-bearing function. This avoids the flexible inner liner bearing both fluid pressure and axial tension at the same time, solving the technical problems of local deformation concentration of flexible elements, uncontrollable double curvature formation, and coupling of axial load and watertight function.

[0012] Furthermore, the closed load-bearing band intersects between the first circumferential side of the first bending zone and the second circumferential side of the second bending zone, and between the second circumferential side of the first bending zone and the first circumferential side of the second bending zone, respectively, so that the closed path is in a spatial figure-eight shape.

[0013] By adopting this technical solution, the same closed load-bearing band can both force the bending directions of the two bending zones to be always opposite and form a continuous axial force transmission loop, thus integrating the functions of bending coupling and axial load bearing.

[0014] Furthermore, the commutation assembly includes a commutation wheel; The closed load-bearing belt bypasses the reversing wheel to achieve circumferential switching.

[0015] By adopting this technical solution, the sliding friction when the closed load-bearing belt turns is transformed into rolling friction, thereby reducing frictional resistance and wear.

[0016] Furthermore, the closed load-bearing band includes at least a first closed load-bearing band and a second closed load-bearing band, which are offset from each other around the axis of the flexible inner liner, and are used to respond to lateral displacement in different directions.

[0017] By adopting this technical solution, the connecting device can respond to the lateral displacement components in at least two directions, thereby achieving spatial hypercurvature compensation and expanding the displacement adaptation range.

[0018] Furthermore, a guide structure is provided on the rigid frame; The closed load-bearing band is inserted into the guide structure and can slide relative to the rigid frame.

[0019] By adopting this technical solution, the guide structure can limit the extension path of the closed load-bearing band and prevent it from deviating, while allowing the closed load-bearing band to slide freely on the rigid frame.

[0020] Furthermore, the rigid frame is provided with mutually cooperating scale portions and guide grooves; The scale portion is slidably embedded in the guide groove to guide the relative rotation between adjacent rigid frames.

[0021] By adopting this technical solution, the scale section and the guide groove work together to provide motion guidance for the relative rotation of adjacent rigid skeletons, prevent the rigid skeletons from deflecting, keep the rotation axes of each rigid skeleton consistent, and ensure that the bending trajectory in the bending area is controllable.

[0022] Furthermore, at least one of the scale portion and the rigid skeleton is provided with a limiting surface for abutting against each other when the first pipe and the second pipe approach each other to a predetermined extent, so as to limit the axial compression stroke.

[0023] By adopting this technical solution, a rigid stop is formed, allowing the axial compressive load to be transferred through the rigid frame, which can protect the flexible inner liner.

[0024] Furthermore, the flexible inner liner is fixedly connected to the first and second pipes only at its two axial ends, and the middle part of the flexible inner liner is axially movable relative to at least part of the rigid frame.

[0025] By adopting this technical solution, the flexible inner liner can slide relative to the rigid frame during bending, avoiding strain concentration caused by the rotation of the external rigid frame, thereby improving the fatigue life of the flexible inner liner.

[0026] Furthermore, a support ring is provided on the inner side of the rigid frame to radially support the flexible inner liner.

[0027] By adopting this technical solution, the support ring can provide support for the flexible inner liner, preventing the flexible inner liner from collapsing under the action of internal fluid pressure, while not affecting the axial free sliding of the flexible inner liner, thus taking into account both support and decoupling functions.

[0028] Furthermore, a corner limiting mechanism is provided between the rigid frames to limit the maximum relative rotation angle between adjacent rigid frames, so that the actual bending radius of the flexible inner liner is not less than the preset minimum allowable bending radius.

[0029] By adopting this technical solution, damage to the flexible inner liner caused by excessive bending can be avoided, thereby improving the safety of the device.

[0030] Furthermore, the closed load-bearing belt is provided with a pre-tensioning mechanism for adjusting the initial tension of the closed load-bearing belt.

[0031] By adopting this technical solution, the initial tension can ensure that the bending zone is in a stable initial straight state during normal operation, eliminate the difference between the tight and loose sides, and make the hyperbola response more rapid and consistent when vibration occurs.

[0032] Furthermore, the first pipe and the second pipe are cooling water pipes within two adjacent modular data center modules, respectively.

[0033] By adopting this technical solution, the problem of lateral misalignment compensation of rigid cooling water pipes between data center modules during earthquakes can be solved, preventing cooling water leakage from damaging critical equipment such as servers.

[0034] The present invention also provides a displacement compensation method using a seismic-resistant connection device, comprising: The two ends of the flexible inner liner are respectively sealed and connected to the first pipe and the second pipe; When the second pipe undergoes lateral displacement relative to the first pipe, the fixed-length constraint of the closed bearing band causes the first and second bending areas to automatically form bends in opposite directions to absorb the lateral displacement. During the bending process in the first and second bending zones, the closed load-bearing band bears at least part of the axial load generated by the internal pressure of the flexible inner liner. The flexible inner liner maintains a fluid-sealed connection between the first and second pipes.

[0035] By adopting this technical solution, the automatic formation of two bending zones in opposite directions is achieved through the fixed-length constraint of the closed load-bearing belt. No electricity, sensors, or active control system are required, and it can still work reliably under extreme conditions of power outage caused by earthquakes. At the same time, the axial load is borne by the closed load-bearing belt, and the fluid is kept sealed and connected by the flexible inner liner, so that the cooling water system always maintains normal operation during the entire displacement compensation process.

[0036] Compared with the prior art, the present invention has the following advantages: 1. By generating small-angle rotations sequentially through multiple rigid frames, the lateral displacement is dispersed in batches along the first and second bending zones, reducing the risk of large-angle bending at a single point and improving the fatigue life and reliability of the connecting device.

[0037] 2. By using a closed fixed-length load-bearing belt and a reversing component, the first bending zone and the second bending zone are coupled in path length. This allows for automatic double curvature compensation without relying on motors, sensors, or active control, resulting in a simple and reliable structure.

[0038] 3. The two bending zones in opposite directions form an S-shaped compensation state, which allows the two rigid tubes to be laterally misaligned while maintaining a basically parallel posture, which is consistent with the actual working conditions of the seismic response of adjacent modules in a modular data center.

[0039] 4. The flexible inner liner is mainly responsible for fluid pressure bearing and sealing, while the closed load-bearing belt, end load-bearing components and rigid frame are mainly responsible for axial load, limiting and bending trajectory control. The functions of each component are clearly defined and the reliability is high.

[0040] 5. The closed load-bearing band serves both to couple the bending directions of the two bending zones and to form an axial mechanical load-bearing path between the load-bearing components at both ends. It is a multi-purpose and compact structure.

[0041] 6. Through two sets of orthogonal closed fixed-length closed bearing zones, it can respond to two mutually perpendicular lateral displacement components respectively, and jointly adapt to oblique seismic displacement.

[0042] 7. The maximum deformation of the flexible inner liner can be limited by the external mechanical structure, avoiding the need for the flexible material itself to reach its limit before a limiting effect is achieved, thus ensuring high safety. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the overall structure of the seismic connection device of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the seismic connection device of the present invention; Figure 3 This is a side view of the rigid frame structure in the seismic connection device of the present invention; Figure 4 This is a front view schematic diagram of the rigid frame structure in the seismic connection device of the present invention; Figure 5 This is a side view of the reversing component in the seismic connection device of the present invention; Figure 6 This is a schematic diagram of the closed bearing band closure path in the seismic connection device of the present invention.

[0044] Explanation of reference numerals in the attached drawings: 10, First pipe; 20, Second pipe; 30, Flexible inner liner; 40, First end support member; 50, Second end support member; 60, First bending zone; 70, Second bending zone; 80, Reversing assembly; 81, Reversing assembly body; 84, Reversing wheel; 85, Reversing wheel axle; 90, Rigid frame; 91, Frame body; 92, Upper scale portion; 93, Lower scale portion; 94, Left scale portion; 95, Right scale portion; 96, Guide groove; 97, Anti-detachment limiting portion; 98, Limiting surface; 100, Closed support band; 130, Support ring; 190, First module; 200, Second module. Detailed Implementation

[0045] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0046] Please refer to the appendix. Figure 1An anti-seismic connection device for connecting a first pipe 10 and a second pipe 20 includes a flexible inner liner 30, a bending restraint assembly, a reversing assembly 80, an end bearing member, and at least one closed bearing band 100.

[0047] The two ends of the flexible inner liner 30 are respectively sealed to the first pipe 10 and the second pipe 20, forming a continuous fluid channel between the first pipe 10 and the second pipe 20. The flexible inner liner 30 adopts a flexible tubular structure, which can maintain the sealed delivery of internal fluid when it is bent and deformed. Its two ends can be fixedly connected to the rigid pipe through flange connection, crimp connection or other known sealing connection methods.

[0048] The bending constraint assembly is disposed on the periphery of the flexible inner liner 30, including a first bending region 60 and a second bending region 70 arranged sequentially along the axial direction of the flexible inner liner 30; the first bending region 60 is disposed near the first pipe 10, and the second bending region 70 is disposed near the second pipe 20; both the first bending region 60 and the second bending region 70 include at least two rigid frames 90 arranged around the flexible inner liner 30, and adjacent rigid frames 90 can rotate relative to each other; each rigid frame 90 is arranged sequentially along the axial direction, and adjacent frames can rotate relative to each other, and the small rotation angles of each frame are superimposed along the axial direction, so that the bending region as a whole forms a continuous bending shape.

[0049] The reversing assembly 80 is disposed between the first bending zone 60 and the second bending zone 70 to change the circumferential position of the closed load-bearing belt 100.

[0050] The end bearing member includes a first end bearing member 40 and a second end bearing member 50; the first end bearing member 40 is disposed at the end of the first bending zone 60 away from the reversing component 80, and the second end bearing member 50 is disposed at the end of the second bending zone 70 away from the reversing component 80; the first end bearing member 40 is fixedly connected to the first pipe 10, and the second end bearing member 50 is fixedly connected to the second pipe 20; the end bearing member serves as the end reversing support point of the closed bearing band 100 path on the one hand, and transmits the axial force of the closed bearing band 100 to the pipe on the other hand.

[0051] The closed load-bearing band 100 is a closed annular band with certain tensile strength and fixed length characteristics. The closed load-bearing band 100 forms a closed path along the end load-bearing member 40, the first bending zone 60, the reversing assembly 80, and the second bending zone 70. Specifically, it starts from the first end load-bearing member 40, extends along the first circumferential side of the first bending zone 60 to the reversing assembly 80, reverses direction through the reversing assembly 80 to the second circumferential side of the second bending zone 70 opposite to the first circumferential side, and continues to extend to the second end load-bearing member 50. After reversing direction through the second end load-bearing member 50, it returns along the first circumferential side of the second bending zone 70 to the reversing assembly 80. Then it reverses direction through the reversing assembly 80 to the second circumferential side of the first bending zone 60 and returns to the first end load-bearing member 40, forming a closed loop. The closed load-bearing band passes through the guide structure provided on each rigid frame 90 and can slide freely within it.

[0052] When the first pipe 10 and the second pipe 20 undergo lateral relative displacement, the fixed-length constraint of the closed load-bearing band 100 causes the first bending zone 60 and the second bending zone 70 to bend in opposite directions to absorb the lateral relative displacement. Specifically, when the second pipe 20 is laterally misaligned relative to the first pipe 10, the effective path length on a certain circumferential side of the first bending zone 60 increases and the effective path length on the relative circumferential side decreases. This length change is transmitted to the relative circumferential side of the second bending zone 70 after being reversed by the reversing component 80, so that the second bending zone 70 forms a curvature opposite to that of the first bending zone 60, and finally forms an S-shaped double curvature compensation shape.

[0053] The closed load-bearing band 100 also forms an axial force transmission path independent of the flexible inner liner 30, and is used to bear at least part of the axial load generated by the internal pressure of the flexible inner liner 30. When there is fluid pressure inside the flexible inner liner 30, the axial tensile force generated at both ends is transmitted through the closed load-bearing band 100 to the first end load-bearing member 40 and the second end load-bearing member 50, rather than being borne by the flexible inner liner 30 itself. This achieves the structural separation of the fluid sealing function and the mechanical load-bearing function.

[0054] Please refer to the appendix. Figure 6 The closed load-bearing band 100 intersects between the first circumferential side of the first bending zone 60 and the second circumferential side of the second bending zone 70, and between the second circumferential side of the first bending zone 60 and the first circumferential side of the second bending zone 70, respectively, so that the closed path is spatially figure-eight shaped. This path configuration can more reliably ensure that the two bending zones produce curvatures in opposite directions, and the same closed load-bearing band 100 forms the optimal force path between the two functions of bending coupling and axial force transmission.

[0055] Please refer to the appendix. Figure 5The reversing assembly 80 includes a reversing assembly body 81 and a reversing wheel 84 disposed thereon. The reversing wheel 84 is rotatably mounted on the reversing assembly body 81 via a reversing wheel shaft 85. The closed support belt 100 bypasses the reversing wheel 84 to achieve circumferential switching. The reversing wheel 84 may be at least one of a guide roller, a sprocket, or a pulley to reduce the frictional resistance when the closed support belt turns.

[0056] Please refer to the appendix. Figure 5-6 To accommodate seismic displacements in different directions, the seismic connection device can be equipped with multiple closed load-bearing bands 100. Taking two as an example: a first closed load-bearing band and a second closed load-bearing band. The first closed load-bearing band is set in the first lateral direction to respond to lateral displacements in the first direction. The second closed load-bearing band is deflected relative to the first closed load-bearing band around the axis of the flexible inner liner 30, for example, deflected by about 90°, and is set in the second lateral direction, which is basically perpendicular to the first lateral direction, to respond to lateral displacements in the second direction. The two sets of closed load-bearing bands 100 have the same path structure, but their circumferential positions are different. When an oblique combined displacement occurs, the two sets of closed load-bearing bands work simultaneously to jointly limit the spatial posture of the rigid frame 90 and achieve spatial hypercurvature compensation.

[0057] Please refer to the appendix. Figure 3 Each rigid frame 90 is provided with a guide structure; the guide structure can be a through hole or groove opened on the frame body 91, or it can be a guide sleeve, guide ring or other components separately provided on the frame; the closed bearing band 100 passes through the guide structure, and the inner wall of the guide structure and the closed bearing band 100 are clearance fit, so that the closed bearing band 100 can slide freely relative to the rigid frame 90 along its own length direction; in this way, when the rigid frames 90 rotate relative to each other, the closed bearing band 100 can slide in the guide structure to adapt to the local change of the path length, and will not generate additional constraints due to the rotation of the frame; the inner wall of the guide structure can be provided with at least one of the following: low friction bushing, roller guide, spherical guide sleeve or arc guide hole, to reduce sliding friction.

[0058] Please refer to the appendix. Figure 3Each rigid frame 90 has a mating scale portion and a guide groove 96 between adjacent rigid frames. Specifically, each rigid frame 90 includes a frame body 91, and the outer periphery of the frame body 91 is provided with a plurality of scale portions distributed circumferentially (e.g., upper scale portion 92, lower scale portion 93, left scale portion 94, and right scale portion 95). Each adjacent rigid frame 90 is provided with a corresponding guide groove 96, and the scale portion is slidably embedded in the guide groove 96. When the adjacent rigid frames 90 rotate relative to each other, the scale portion on the outer side of the bend is withdrawn from the guide groove 96, and the scale portion on the inner side of the bend is further inserted into the guide groove 96, thereby guiding the relative rotation direction between the adjacent rigid frames 90 and ensuring that the rotation axis of each frame is consistent. An anti-detachment limiting portion 97 may also be provided in the guide groove 96 to prevent the scale portion from completely detaching from the guide groove 96.

[0059] Please refer to the appendix. Figure 4 A limiting surface 98 is provided on the scale portion or the rigid frame 90; specifically, the limiting surface 98 is located at the root of the scale portion or at the bottom of the guide groove 96; when the first pipe 10 and the second pipe 20 are subjected to external force and move closer to each other and reach the predetermined compression stroke, the limiting surfaces 98 between adjacent rigid frames 90 abut against each other to form a rigid stop, thereby limiting the axial compression stroke; at this time, the axial compression load is directly transmitted between the outer rigid frames 90 through the limiting surface 98, and will not be transmitted to the flexible inner liner 30, thus avoiding damage to the flexible inner liner 30 due to excessive compression.

[0060] The flexible inner liner 30 forms a fixed sealing connection with the first pipe 10 and the second pipe 20 only at its two axial ends. In the middle part of the flexible inner liner 30, that is, the part located within the first bending area 60 and the second bending area 70, relative axial movement between the flexible inner liner 30 and the rigid frame 90 is allowed. Specifically, a gap is left between the outer wall of the flexible inner liner 30 and the inner wall of the rigid frame 90, or a sliding fit structure is provided between the flexible inner liner 30 and the rigid frame 90, so that the flexible inner liner 30 can slide freely along the axial direction inside the rigid frame 90. This arrangement avoids the local rotation of the rigid frame 90 directly forcing the flexible inner liner 30 to bend at a large angle at the corresponding position, making the bending deformation of the flexible inner liner 30 more uniform.

[0061] Please refer to the appendix. Figure 2The rigid frame 90 has a support ring 130 on its inner side for radial support of the flexible inner liner 30. The support ring 130 is an annular support that surrounds the outer periphery of the flexible inner liner 30. Its inner diameter is adapted to the outer diameter of the flexible inner liner 30 to provide radial support for the flexible inner liner 30. The support ring 130 can be fixedly installed on the inner wall of the rigid frame 90 or integrally formed with the rigid frame 90. When there is fluid pressure inside the flexible inner liner 30, the support ring 130 can prevent the flexible inner liner 30 from excessive radial expansion or collapse, while not affecting the axial sliding of the flexible inner liner 30 relative to the rigid frame 90.

[0062] Please refer to the appendix. Figure 4 A corner limiting structure is provided between the rigid frames 90 to limit the maximum relative rotation angle between adjacent rigid frames 90. The corner limiting structure can be formed by the maximum insertion position of the scale part, the fitting gap between the scale part and the guide groove 96, and the anti-detachment limiting part 97. By setting the corner limiting structure, the actual bending radius of the flexible inner liner 30 under the maximum designed lateral displacement state is not less than its preset minimum allowable bending radius. In other words, the existence of the corner limiting structure ensures that under the extreme displacement condition, the bending degree of the flexible inner liner 30 is always within the safe range that its material can withstand, and the maximum deformation of the flexible inner liner 30 is actively limited by the outer mechanical frame.

[0063] The closed load-bearing band 100 is equipped with a pre-tensioning mechanism for adjusting the initial tension of the closed load-bearing band. The pre-tensioning mechanism can be set at the end load-bearing member or at any appropriate position on the path of the closed load-bearing band 100. The pre-tensioning mechanism can be in the form of screw adjustment, spring adjustment or wedge adjustment. The pre-tensioning mechanism applies a predetermined initial tension to the closed load-bearing band so that each bending zone is in a stable initial straight state during normal operation, ensuring that the two bending zones can respond quickly when an earthquake occurs.

[0064] Please refer to the appendix. Figure 1 The first pipe 10 and the second pipe 20 are cooling water pipes in two adjacent modular data center modules, respectively. Specifically, the first pipe 10 is located in the first module 190 and the second pipe 20 is located in the second module 200. The seismic connection device is set across the boundary area between the two modules, with one end connected to the first pipe 10 and the other end connected to the second pipe 20. When the two modules undergo relative lateral displacement under seismic action, the seismic connection device absorbs the displacement through the hyperbolic compensation of the two bending areas, maintaining the continuity and sealing of the cooling water pipes.

[0065] The present invention also provides a displacement compensation method, which uses the seismic connection device described in any of the above embodiments to compensate for the lateral displacement of a rigid pipeline.

[0066] First, the two ends of the flexible inner liner 30 are sealed and connected to the first pipe 10 and the second pipe 20 respectively, so that a continuous fluid channel is formed between the first pipe 10 and the second pipe 20; under normal operating conditions, the first pipe 10 and the second pipe 20 are basically coaxial.

[0067] When the second pipe 20 undergoes lateral displacement relative to the first pipe 10, the first bending zone 60 bends first, creating a difference in the effective path length between its relative circumferential sides. Since the total path length of the closed bearing band is constant, this length difference is transmitted to the opposite circumferential side of the second bending zone 70 through the reversing component 80. Utilizing the fixed-length constraint of the closed bearing band, the second bending zone 70 automatically bends in the opposite direction to the first bending zone 60. The two bending zones together form an S-shaped hyperbolic compensation configuration, absorbing lateral relative displacement while the pipes at both ends remain essentially parallel.

[0068] During the bending compensation process, the flexible inner liner 30 bends continuously with the first bending zone 60 and the second bending zone 70, always maintaining the sealed connection of the internal fluid channel; at the same time, the axial separation load generated by the internal fluid pressure of the flexible inner liner 30 is borne by the outer path of the closed bearing band, rather than by the flexible inner liner 30 itself, thereby protecting the flexible inner liner 30 and extending its service life.

[0069] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A seismic-resistant connection device for connecting a first pipe and a second pipe, characterized in that, include: The flexible inner liner has its two ends sealed to the first pipe and the second pipe respectively, forming a continuous fluid channel; A bending constraint component is disposed on the periphery of the flexible inner liner, including a first bending area and a second bending area arranged sequentially along the axial direction of the flexible inner liner. Each of the first bending area and the second bending area includes at least two rigid frames arranged around the flexible inner liner, and the adjacent rigid frames can rotate relative to each other. A reversing assembly is disposed between the first bending region and the second bending region; The end bearing members are respectively located at the end of the first bending zone away from the reversing assembly and at the end of the second bending zone away from the reversing assembly; And at least one closed load-bearing band, which forms a closed path along the end load-bearing member, the first bending zone, the reversing assembly and the second bending zone; The closed path is configured to extend along the first circumferential side in the first bending zone, be redirected by a reversing assembly to the second circumferential side in the second bending zone opposite to the first circumferential side, and return to the first bending zone via the reversing assembly; when the first pipe and the second pipe undergo lateral relative displacement, the fixed-length constraint of the closed bearing band causes the first bending zone and the second bending zone to form bends in opposite directions to absorb the lateral relative displacement; the closed bearing band also constitutes an axial force transmission path independent of the flexible inner liner, used to bear at least part of the axial load generated by the internal pressure of the flexible inner liner.

2. The seismic connection device according to claim 1, characterized in that, The closed load-bearing band intersects between the first circumferential side of the first bending zone and the second circumferential side of the second bending zone, and between the second circumferential side of the first bending zone and the first circumferential side of the second bending zone, respectively, so that the closed path is in a spatial figure-eight shape.

3. The seismic connection device according to claim 1, characterized in that, The reversing assembly includes a reversing wheel; The closed load-bearing belt bypasses the reversing wheel to achieve circumferential switching.

4. The seismic connection device according to claim 1, characterized in that, The closed load-bearing band includes at least a first closed load-bearing band and a second closed load-bearing band. The first closed load-bearing band and the second closed load-bearing band are offset from each other around the axis of the flexible inner liner, and are used to respond to lateral displacement in different directions.

5. The seismic connection device according to claim 1, characterized in that, A guide structure is provided on the rigid frame; The closed load-bearing band is inserted into the guide structure and can slide relative to the rigid frame.

6. The seismic connection device according to claim 1, characterized in that, The rigid frame is provided with mutually cooperating scales and guide grooves; The scale portion is slidably embedded in the guide groove to guide the relative rotation between adjacent rigid frames.

7. The seismic connection device according to claim 6, characterized in that, At least one of the scale portion and the rigid frame is provided with a limiting surface for abutting against each other when the first pipe and the second pipe approach each other to a predetermined extent, so as to limit the axial compression stroke.

8. The seismic connection device according to claim 1, characterized in that, The flexible inner liner is fixedly connected to the first and second pipes only at its two axial ends, and the middle part of the flexible inner liner can move relative to the rigid frame in the axial direction.

9. The seismic connection device according to claim 8, characterized in that, The rigid frame has a support ring on its inner side for radially supporting the flexible inner liner.

10. The seismic connection device according to claim 1, characterized in that, An angle limiting mechanism is provided between the rigid frames to limit the maximum relative rotation angle between adjacent rigid frames, so that the actual bending radius of the flexible inner liner is not less than the preset minimum allowable bending radius.

11. The seismic connection device according to claim 1, characterized in that, The closed load-bearing belt is equipped with a pre-tensioning mechanism for adjusting the initial tension of the closed load-bearing belt.

12. The seismic connection device according to any one of claims 1-11, characterized in that, The first pipe and the second pipe are cooling water pipes in two adjacent modular data center modules, respectively.

13. A displacement compensation method using the seismic connection device according to any one of claims 1-12, characterized in that, include: The two ends of the flexible inner liner are respectively sealed and connected to the first pipe and the second pipe; When the second pipe undergoes lateral displacement relative to the first pipe, the fixed-length constraint of the closed bearing band causes the first and second bending areas to automatically form bends in opposite directions to absorb the lateral displacement. During the bending process in the first and second bending zones, the closed load-bearing band bears at least part of the axial load generated by the internal pressure of the flexible inner liner. The flexible inner liner maintains a fluid-sealed connection between the first and second pipes.

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