A marine low-temperature pipe clamp with anti-deformation function

Abstract

The utility model relates to ship low temperature pipeline support technical field especially, it is a kind of marine low temperature pipe pipe clamp with anti-deformation function, solve the problem that the existing marine low temperature pipe pipe clamp loses clamping function due to plastic deformation of pipe clamp caused by thermal expansion and cold shrink under low temperature working condition.A kind of marine low temperature pipe pipe clamp with anti-deformation function, including pipeline and several external frames being arranged in the outer ring of pipeline, the inner top and inner bottom of each external frame are all provided with the transverse plate being contacted with the side wall of pipeline, the side of two transverse plates mutually far away is all provided with the sliding assembly being connected with the inner wall of external frame, the transverse plate of bottom and sliding assembly sliding fit, the transverse plate of top is slidably connected with adjacent sliding assembly by elastic extension component.The utility model cooperates by elasticity and sliding structure, effectively absorbs displacement stress generated by thermal expansion and cold shrink, prevents pipe clamp plastic deformation, ensures long-term stable clamping.

Description

Technical Field

[0001] This utility model relates to the field of marine cryogenic pipeline support technology, and in particular to a marine cryogenic pipe clamp with anti-deformation function. Background Technology

[0002] Marine cryogenic pipe clamps are key structural components used to secure and support pipelines transporting cryogenic media (such as liquid ammonia and liquefied natural gas) on ships. Their main function is to ensure the stable and safe operation of cryogenic pipelines under complex vibration, swaying, and temperature change conditions during ship navigation. Since cryogenic media are typically stored and transported in environments tens of degrees below zero Celsius, the pipeline material will experience significant axial displacement due to thermal expansion and contraction. This places extremely high demands on the structural strength, elastic recovery capability, and long-term clamping stability of the clamps.

[0003] Existing marine cryogenic pipe clamps generally employ rigid or semi-rigid designs in practical applications. While these provide initial clamping force, the clamps are susceptible to plastic deformation due to continuous tensile or compressive stress caused by axial displacement resulting from thermal expansion and contraction of the cryogenic pipeline. Once the pipeline temperature rises and its dimensions recover, the deformed clamps often fail to spring back synchronously, leading to a significant gap between them and the pipeline wall, thus losing their effective clamping function. This problem not only exacerbates pipeline swaying and support failure during ship navigation but can also lead to serious consequences such as pipeline fatigue cracking, joint leaks, and even system shutdown. Furthermore, frequent replacement of deformed clamps significantly increases ship maintenance costs and operational risks. Utility Model Content

[0004] The purpose of this utility model is to provide a marine cryogenic pipe clamp with anti-deformation function, which solves the problem that existing marine cryogenic pipe clamps generally adopt rigid or semi-rigid structural designs in practical applications. Although they can provide initial clamping force, when the cryogenic pipeline undergoes axial displacement due to thermal expansion and contraction, the clamp body is easily subjected to continuous tensile or compressive stress and undergoes plastic deformation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A marine cryogenic pipe clamp with anti-deformation function includes a pipe and several outer frames arranged around the outer ring of the pipe. Each outer frame has a horizontal plate at its inner top and inner bottom that contacts the side wall of the pipe. Each of the two horizontal plates has a sliding component connected to the inner wall of the outer frame on its opposite side. The bottom horizontal plate slides with the sliding component, and the top horizontal plate slides with the adjacent sliding component through an elastic extension component. Both ends of the horizontal plate are connected to a side contact structure through a sliding tensioning structure, and the side contact structure fits against the outer wall of the pipe.

[0007] Preferably, the side contact structure includes a sliding rod and an inclined side rod. Both ends of the cross plate are provided with sliding grooves adapted to the sliding rod. One end of the side rod is fixedly connected to the end of the sliding rod. One end of the sliding rod is connected to the inner wall of the sliding groove through an elastic element. The side wall of the side rod fits against the side wall of the pipe.

[0008] Preferably, the sliding assembly includes a slide rail and a mounting plate connected to the side wall of the outer frame, wherein the mounting plate is slidably engaged with the slide rail via a sliding block.

[0009] Preferably, the elastic element includes a tension spring disposed inside the sliding groove, one end of which is connected to the end of the sliding rod and the other end is connected to the inner wall of the sliding groove.

[0010] Preferably, the elastic extension assembly includes two sleeves and a plurality of compression springs. One end of each sleeve is connected to an adjacent mounting plate, and the other end is slidably connected to a telescopic rod. The telescopic rod is connected to an adjacent cross plate. One end of each compression spring is connected to an adjacent mounting plate, and the other end is connected to an adjacent cross plate.

[0011] Preferably, a support frame is provided on both sides of the bottom of several outer frames, and the top of the support frame is fixedly connected to the bottom of the outer frame with bolts.

[0012] This utility model has the following beneficial effects:

[0013] By designing a structure that combines the top horizontal plate with the elastic extension component, the pipe clamp is able to actively absorb and release axial displacement during thermal expansion and contraction cycles. This significantly reduces stress concentration caused by rigid constraints and fundamentally prevents irreversible plastic deformation of the pipe clamp body. Secondly, the sliding fit between the bottom horizontal plate and the sliding component, along with the adaptive fit of the side contact structure achieved through a sliding tensioning structure, together form a multi-directional flexible support system. This not only ensures the uniformity and continuity of the clamping force but also effectively mitigates the impact of vibration and swaying during ship navigation on the stability of the pipe clamp-pipe connection. Thirdly, since the entire clamping system can automatically return to its initial clamping state after temperature cycling, no manual intervention or component replacement is required, significantly reducing maintenance frequency and downtime, and lowering ship operating costs. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the side rod and sliding rod structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the mounting plate and sliding block structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the sliding groove and tension spring structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the sleeve and telescopic rod structure of this utility model.

[0020] In the diagram: 1. Pipe; 2. Outer frame; 3. Sliding assembly; 4. Horizontal plate; 5. Elastic extension assembly; 6. Side rod; 7. Sliding rod; 8. Mounting plate; 9. Sliding block; 10. Slide rail; 11. Sliding groove; 12. Tension spring; 13. Sleeve; 14. Telescopic rod; 15. Compression spring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] Example 1

[0023] Please see Figure 1-5 As shown, a marine cryogenic pipe clamp with anti-deformation function in this embodiment includes a pipe 1 and several outer frames 2 arranged around the outer ring of the pipe 1. Each outer frame 2 has a horizontal plate 4 that contacts the side wall of the pipe 1 at its inner top and inner bottom. Each side of the two horizontal plates 4 that are far apart from each other is provided with a sliding component 3 that is connected to the inner wall of the outer frame 2. The bottom horizontal plate 4 is slidably engaged with the sliding component 3, and the top horizontal plate 4 is slidably engaged with the adjacent sliding component 3 through an elastic extension component 5. Both ends of the horizontal plate 4 are connected to a side contact structure through a sliding tensioning structure, and the side contact structure is in contact with the outer wall of the pipe 1.

[0024] In practical operation, this marine cryogenic pipe clamp with anti-deformation function effectively addresses the axial displacement problem caused by thermal expansion and contraction of cryogenic pipelines through its unique structural design. Specifically, when the pipe 1 contracts, its overall size shortens, and the outer wall of the pipe 1 exerts an inward pulling force on the horizontal plate 4 in contact with it. The top horizontal plate 4 is connected to the upper sliding component 3 through an elastic extension component 5. This elastic extension component 5 provides appropriate expansion and contraction space, allowing the top horizontal plate 4 to change appropriately with the pipe 1 while maintaining the contact pressure on the pipe 1. The bottom horizontal plate 4 slides with the lower sliding component 3 and can slide freely in the vertical direction within the outer frame 2 to adapt to the displacement changes of the pipe 1 without generating rigid constraints. At the same time, the side contact structure connected to both ends of the horizontal plate 4 through the sliding tensioning structure always maintains a contact state with the outer wall of the pipe 1. When the pipe 1 undergoes axial or slight radial displacement, the side contact structure can be adaptively adjusted through the sliding tensioning structure to ensure that the clamping force is evenly distributed and that the clamp body does not undergo plastic deformation due to local stress concentration. When the temperature of the pipe 1 changes, the elastic force of the elastic component 5 drives the top horizontal plate 4 to follow the change of the pipe. With the cooperation of the bottom horizontal plate 4 and the side contact structure, dynamic displacement is achieved, so that the entire clamping system fits tightly against the outer wall of the pipe 1, and completes the continuous, stable and effective clamping of the pipe 1, avoiding gaps or loosening.

[0025] Example 2

[0026] Please see Figure 1-5 As shown in this embodiment, a marine cryogenic pipe clamp with anti-deformation function has a side contact structure including a sliding rod 7 and an inclined side rod 6. Both ends of the horizontal plate 4 are provided with sliding grooves 11 that are adapted to the sliding rod 7. One end of the side rod 6 is fixedly connected to the end of the sliding rod 7, and one end of the sliding rod 7 is connected to the inner wall of the sliding groove 11 through an elastic element. The side wall of the side rod 6 is in contact with the side wall of the pipe 1. Specifically, through the setting of the sliding rod 7, the inclined side rod 6, the sliding grooves 11 at both ends of the horizontal plate 4, and the tension spring 12, when the pipe 1 undergoes axial or slight radial displacement due to thermal expansion and contraction, the side rod 6 moves synchronously with the outer wall of the pipe 1, causing the sliding rod 7 to slide in the sliding groove 11. The tension spring 12 then extends and retracts to provide a continuous pull force, so that the side rod 6 is always tightly in contact with the side wall of the pipe 1, achieving the effect of maintaining uniform clamping force and preventing local loosening and stress concentration under multi-directional displacement conditions.

[0027] The elastic element includes a tension spring 12 disposed inside the sliding groove 11. One end of the tension spring 12 is connected to the end of the sliding rod 7, and the other end is connected to the inner wall of the sliding groove 11. Specifically, through the tension spring 12 disposed inside the sliding groove 11, with one end connected to the end of the sliding rod 7 and the other end connected to the inner wall of the sliding groove 11, when the side rod 6 is pushed by the displacement of the pipe 1, the tension spring 12 is stretched and stores elastic potential energy. When the pipe 1 retracts or resets, the tension spring 12 releases energy to pull the sliding rod 7 back to its original position, so that the side rod 6 automatically returns to its initial contact state, achieving the function of self-adaptive reset of the side contact structure and maintaining effective clamping for a long time.

[0028] Example 3

[0029] Please see Figure 1-5 As shown in the figure, a marine cryogenic pipe clamp with anti-deformation function in this embodiment includes a sliding assembly 3 comprising a slide rail 10 connected to the side wall of the outer frame 2 and a mounting plate 8. The mounting plate 8 slides in cooperation with the slide rail 10 via a sliding block 9. Specifically, through the arrangement of the slide rail 10, the mounting plate 8 and the sliding block 9, the mounting plate 8 slides smoothly in the vertical direction along the slide rail 10 via the sliding block 9, providing stable guiding support for the horizontal plate 4, while avoiding lateral offset or jamming, thereby improving the movement accuracy and structural reliability of the horizontal plate 4, and ensuring that it smoothly responds to the dimensional changes of the pipe 1 during the thermal cycle.

[0030] The elastic extension assembly 5 includes two sleeves 13 and several compression springs 15. One end of the sleeve 13 is connected to the adjacent mounting plate 8, and the other end is slidably connected to a telescopic rod 14, which is connected to the adjacent horizontal plate 4. One end of the compression spring 15 is connected to the adjacent mounting plate 8, and the other end is connected to the adjacent horizontal plate 4. Specifically, the elastic extension assembly 5, composed of two sleeves 13, a telescopic rod 14, and several compression springs 15, is configured such that one end of the sleeve 13 is connected to the mounting plate 8, and the other end is slidably connected to the telescopic rod 14, which is connected to the horizontal plate 4. The compression springs 15 are connected to the mounting plate 8 and the horizontal plate 4 at both ends, respectively. When the pipe 1 heats up and expands, the top horizontal plate 4 moves upward, causing the telescopic rod 14 to slide within the sleeve 13, while simultaneously compressing or stretching the compression springs 15 to absorb axial deformation energy. When the pipe 1 cools down and contracts, the compression springs 15 release their elastic force to push the horizontal plate 4 back to its original position, achieving the effect of buffering thermal stress, preventing permanent deformation caused by rigid stress on the top structure, and ensuring the reversibility and long-term stability of the clamping system.

[0031] Support frames are provided on both sides of the bottom of several outer frames 2. The top of the support frames is fixedly connected to the bottom of the outer frame 2 with bolts. Specifically, the support frames provided on both sides of the bottom of several outer frames 2, and the top of the support frames is fixedly connected to the bottom of the outer frame 2 with bolts, provide a stable mounting base for the entire pipe clamp structure and firmly fix the outer frame 2 to the hull structure. This effectively disperses vibration loads and additional forces caused by thermal deformation, thereby enhancing the overall structural rigidity and preventing the pipe clamp from shifting or overturning. This further improves the safety and reliability of the cryogenic pipeline system in the complex operating environment of the ship.

[0032] In actual operation, the marine cryogenic pipe clamp with anti-deformation function effectively addresses the axial and minute radial displacement problems caused by thermal expansion and contraction of the cryogenic pipeline 1 through the coordinated cooperation of various structural components. When the pipeline 1 is in a cryogenic working condition, such as when transporting liquid ammonia at a temperature of approximately -38°C, its material shrinkage causes the overall length to shorten. At this time, the outer wall of the pipeline 1 applies an inward pulling force to the horizontal plate 4 in contact with it. The top horizontal plate 4 is connected to the upper sliding assembly 3 through an elastic extension assembly 5. The elastic extension assembly 5 consists of two sleeves 13, a telescopic rod 14, and several compression springs 15. One end of the sleeve 13 is fixed to the mounting plate 8, and the other end is slidably connected to the telescopic rod 14, which is connected to the top horizontal plate 4. The two ends of the compression springs 15 are respectively connected to the mounting plate 8 and the horizontal plate 4. When pipe 1 expands, the top horizontal plate 4 moves upward, causing the telescopic rod 14 to slide within the sleeve 13, while simultaneously stretching or compressing the spring 15, thereby absorbing axial deformation energy and maintaining the contact pressure on pipe 1. The bottom horizontal plate 4 directly slides with the lower sliding assembly 3, which includes a slide rail 10 fixed to the side wall of the outer frame 2 and a mounting plate 8 slidably connected to the slide rail 10 via a sliding block 9, allowing the bottom horizontal plate 4 to slide freely in the vertical direction, avoiding excessive stress due to rigid constraints. At the same time, both ends of the horizontal plate 4 are provided with sliding grooves 11, and sliding rods 7 are provided in the sliding grooves 11. One end of the sliding rod 7 is connected to the inner wall of the sliding groove 11 via a tension spring 12, and the other end is fixedly connected to an inclined side rod 6. The side wall of the side rod 6 is always in contact with the outer wall of pipe 1. When pipe 1 undergoes axial or slight radial displacement, the side rod 6 moves accordingly. The sliding rod 7 is pushed to slide within the sliding groove 11, and the tension spring 12 is stretched and stores elastic potential energy, continuously providing a pull force to ensure that the side rod 6 is tightly attached to the pipe 1. When the temperature of the pipe 1 drops, the compression spring 15 releases the stored elastic energy, pushing the top horizontal plate 4 to reset downwards. At the same time, the tension spring 12 pulls the sliding rod 7 back to its original position, so that the side rod 6 is once again attached to the pipe 1. The bottom horizontal plate 4 also returns to its initial position under the action of gravity and system balance. The entire clamping system thus achieves automatic reset and continuous effective clamping. In addition, several outer frames 2 are provided with support frames on both sides of the bottom. The top of the support frame is fixedly connected to the bottom of the outer frame 2 by bolts, providing a stable installation base for the entire pipe clamp structure, firmly anchoring the outer frame 2 to the hull structure, effectively dispersing the vibration, swaying load and additional force caused by thermal deformation generated during ship navigation, and preventing the overall displacement, loosening or overturning of the pipe clamp.

[0033] The beneficial effects of this technical solution comprehensively cover and precisely solve the core problems of existing marine cryogenic pipe clamps, such as easy deformation, clamping failure, frequent maintenance, and insufficient safety. First, through the cooperation of the top horizontal plate 4 and the elastic extension component 5 composed of sleeve 13, telescopic rod 14, and compression spring 15, the axial displacement of the pipe 1 due to thermal expansion and contraction is effectively buffered and energy absorbed, avoiding the plastic deformation caused by repeated stress in traditional rigid structures, and significantly improving the fatigue resistance and long-term stability of the pipe clamp. Second, the bottom horizontal plate 4 achieves smooth vertical sliding through the slide rail 10, sliding block 9, and mounting plate 8 in the sliding component 3, which provides reliable guidance and eliminates the risk of lateral jamming, ensuring that the horizontal plate 4 can still smoothly respond to changes in the size of the pipe 1 under complex working conditions. Third, the side contact structure, through the linkage design of sliding rod 7, inclined side rod 6, sliding groove 11, and tension spring 12, can maintain a uniform and continuous clamping force when the pipe 1 undergoes multi-directional small displacement, preventing local loosening or stress concentration, and effectively protecting the outer wall of the pipe 1 from wear or damage. Fourth, tensioning As a key elastic element, spring 12 not only provides dynamic tension during displacement but also drives the side structure to automatically reset after temperature cycling, ensuring the reversibility and long-term effectiveness of the clamping function and significantly reducing the need for manual intervention. Fifth, the combination of compression spring 15 and sleeve 13-telescopic rod 14 structure in elastic extension component 5 has both guiding and energy storage functions, enhancing the system's impact resistance while ensuring motion accuracy. Finally, the support frames set on both sides of the bottom of the outer frame 2 are firmly connected to the hull by bolts, greatly enhancing the structural rigidity and vibration resistance of the entire pipe clamp system, effectively resisting complex dynamic loads during ship navigation, and preventing pipe 1 from shaking, support failure, or even leakage accidents caused by overall loosening. It is especially suitable for cryogenic fuel transportation scenarios with high safety requirements such as liquid ammonia, providing solid technical support for the safe, efficient, and low-maintenance operation of green shipping and clean energy ships.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A marine cryogenic pipe clamp with anti-deformation function, characterized in that, include: The pipe (1) and several outer frames (2) are arranged around the outer ring of the pipe (1). Each outer frame (2) has a horizontal plate (4) at its inner top and inner bottom that contacts the side wall of the pipe (1). The two horizontal plates (4) are provided with a sliding component (3) connected to the inner wall of the outer frame (2) on the side away from each other. The bottom horizontal plate (4) is slidably engaged with the sliding component (3). The top horizontal plate (4) is slidably engaged with the adjacent sliding component (3) through an elastic extension component (5). Both ends of the horizontal plate (4) are connected to a side contact structure through a sliding tensioning structure. The side contact structure is in contact with the outer wall of the pipe (1).

2. The marine cryogenic pipe clamp with anti-deformation function according to claim 1, characterized in that, The side contact structure includes a sliding rod (7) and an inclined side rod (6). Both ends of the horizontal plate (4) are provided with sliding grooves (11) that are adapted to the sliding rod (7). One end of the side rod (6) is fixedly connected to the end of the sliding rod (7). One end of the sliding rod (7) is connected to the inner wall of the sliding groove (11) through an elastic element. The side wall of the side rod (6) is in contact with the side wall of the pipe (1).

3. A marine cryogenic pipe clamp with anti-deformation function according to claim 1, characterized in that, The sliding assembly (3) includes a slide rail (10) connected to the side wall of the outer frame (2) and a mounting plate (8), the mounting plate (8) being slidably engaged with the slide rail (10) via a sliding block (9).

4. A marine cryogenic pipe clamp with anti-deformation function according to claim 2, characterized in that, The elastic element includes a tension spring (12) disposed inside the sliding groove (11), one end of which is connected to the end of the sliding rod (7) and the other end is connected to the inner wall of the sliding groove (11).

5. A marine cryogenic pipe clamp with anti-deformation function according to claim 3, characterized in that, The elastic extension assembly (5) includes two sleeves (13) and several compression springs (15). One end of the sleeve (13) is connected to an adjacent mounting plate (8), and the other end is slidably connected to a telescopic rod (14). The telescopic rod (14) is connected to an adjacent horizontal plate (4). One end of the compression spring (15) is connected to an adjacent mounting plate (8), and the other end is connected to an adjacent horizontal plate (4).

6. A marine cryogenic pipe clamp with anti-deformation function according to claim 5, characterized in that, Support frames are provided on both sides of the bottom of several of the outer frames (2), and the top of the support frames is fixedly connected to the bottom of the outer frames (2) with bolts.

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