A vibration resistant support hanger for LNG flexible pipe

Abstract

The application discloses an anti-vibration support hanger for an LNG flexible pipeline and relates to the technical field of pipeline support equipment. The support hanger comprises a bottom plate, a support plate, first to fourth connecting flanges connected in sequence, and a height adjusting assembly, an angle adjusting assembly and a pipeline clamp assembly. The height adjusting assembly is used for realizing accurate height adjustment and vertical vibration reduction through a support cylinder, a limiting sliding cylinder, an adjusting screw rod and a first compression spring. The angle adjusting assembly is used for realizing angle adjustment through cooperation of an arc-shaped adjusting groove and a fixing hole. The pipeline clamp assembly is used for realizing flexible constraint and auxiliary vibration reduction of the pipeline through a lower clamp, an upper clamp, an extrusion block and a second compression spring. The inner side of the clamp and the surface of the extrusion block are provided with a buffer layer. The application has the functions of flexible height and angle adjustment, double vibration reduction, reliable sealing and pipeline protection, has high adaptability, stable operation, convenient installation and maintenance, and can effectively guarantee long-term safe operation of the LNG flexible pipeline.

Description

Technical Field

[0001] This application relates to the field of pipeline support equipment technology, and in particular to a vibration-resistant support for LNG flexible pipelines. Background Technology

[0002] Liquefied natural gas (LNG), as a clean and efficient energy source, requires dedicated flexible pipelines for storage, transportation, and end-use applications. LNG flexible pipelines possess a certain degree of flexibility, adapting to conditions such as equipment displacement, temperature deformation, and foundation settlement. However, during transportation, they are prone to vibration due to factors such as medium flow pulsation, equipment vibration transmission, and external environmental disturbances. Prolonged vibration not only leads to loosening of pipeline joints and seal failure, causing LNG leaks and other safety hazards, but also exacerbates pipeline fatigue wear and shortens its service life. Therefore, vibration-resistant supports and hangers are necessary to reliably constrain and buffer the vibration of LNG flexible pipelines.

[0003] Existing LNG flexible pipeline supports are mostly fixed structures, only providing basic support for the pipeline. They are difficult to adjust flexibly according to on-site installation space, pipeline laying angle, and height requirements, resulting in poor adaptability. While some adjustable supports have the ability to adjust the foundation height, the adjustment accuracy is low, the structural stability is insufficient, and there is a lack of targeted vibration-resistant design, relying solely on simple spring structures for cushioning. Furthermore, the contact between the pipeline and the clamps is mostly rigid, which easily generates friction and wear during vibration, damaging the pipeline's outer protective layer and further exacerbating safety risks. Utility Model Content

[0004] This utility model addresses the aforementioned problems in the existing technology by providing a vibration-resistant support for LNG flexible pipelines.

[0005] The objective of this utility model is mainly achieved through the following solution:

[0006] An anti-vibration support for LNG flexible pipelines includes a base plate connected to an installation plane, a support plate vertically disposed on the upper surface of the base plate, a first connecting flange disposed on the upper surface of the support plate, a second connecting flange detachably and fixedly connected to the upper surface of the first connecting flange, a height adjustment assembly disposed on the upper surface of the second connecting flange, an angle adjustment assembly disposed on the upper surface of the height adjustment assembly, and a pipe clamp assembly disposed on the upper surface of the angle adjustment assembly.

[0007] The height adjustment assembly includes a support cylinder, the bottom of which is fixedly installed on the upper surface of the second connecting flange. The support cylinder is hollow inside and open at the top. A limiting slide cylinder that can move up and down is slidably connected inside the support cylinder. The upper part of the limiting slide cylinder extends out of the support cylinder and is fixedly connected to a third connecting flange.

[0008] The angle adjustment assembly includes a fourth connecting flange, which is coaxially arranged with the third connecting flange.

[0009] The pipe clamp assembly includes a lower clamp and an upper clamp. The lower clamp is detachably and fixedly connected to the fourth connecting flange. The upper clamp is fixedly installed above the lower clamp, and an installation cavity for securing the pipe is formed between the lower clamp and the upper clamp.

[0010] Preferably, the top edge of the support cylinder extends outward with a connecting plate, and the upper surface of the connecting plate is detachably and fixedly connected with a top cover by locking bolts. A limiting sliding hole is opened in the middle of the top cover, and the upper part of the limiting sliding cylinder extends out of the support cylinder through the limiting sliding hole. The size of the limiting sliding cylinder is adapted to the size of the limiting sliding hole, and a sealing ring is provided on the inner wall of the limiting sliding hole.

[0011] Preferably, the upper sidewall of the support cylinder is symmetrically provided with two vertically arranged adjustment elongated holes on the left and right, and the inside of the support cylinder is slidably connected to a limiting slide plate, the size of which is adapted to the internal size of the support cylinder;

[0012] The sidewall of the limiting slide plate is symmetrically provided with two left and right adjustment ears. The two adjustment ears extend out of the support cylinder through corresponding adjustment elongated holes on both sides, and the size of the adjustment ears is adapted to the size of the adjustment elongated holes.

[0013] The limiting slide plate has an insertion hole in the middle. The bottom of the limiting slide cylinder extends into the lower part of the limiting slide plate through the insertion hole. The size of the insertion hole is adapted to the size of the limiting slide cylinder. A first compression spring is sleeved on the lower part of the limiting slide cylinder. The upper surface of the first compression spring abuts against the lower surface of the limiting slide plate, and the lower surface of the first compression spring abuts against the bottom of the support cylinder.

[0014] The side wall of the limiting slide cylinder is further extended outward by a limiting plate, the lower surface of which abuts against the upper surface of the limiting slide plate.

[0015] Preferably, two adjusting screws are symmetrically arranged between the connecting plate and the top cover. The upper part of the adjusting screw passes through the connecting plate and the top cover, and the adjusting screw is fixed to the connecting plate and the top cover by two locking nuts.

[0016] The lower part of the adjusting screw passes through the adjusting ear plate, and the adjusting screw is fixed to the adjusting ear plate by two adjusting nuts.

[0017] Preferably, gaskets are provided between the upper locking nut and the upper surface of the top cover, between the lower locking nut and the lower surface of the connecting plate, and between the upper and lower adjusting nuts and the upper and lower surfaces of the adjusting ear plate.

[0018] Preferably, the edge of the third connecting flange is provided with a plurality of arc-shaped adjustment grooves evenly circumferentially along its axis, and the arc-shaped adjustment grooves are coaxially arranged with the third connecting flange;

[0019] The side wall of the fourth connecting flange is provided with a plurality of fixing holes evenly distributed around its axis. The positions of the fixing holes correspond to the positions of the arc-shaped adjustment grooves. The third connecting flange and the fourth connecting flange are fixed by locking bolts passing through the fixing holes and the arc-shaped adjustment grooves.

[0020] Preferably, both the lower and upper clamps have connecting ear plates extending outward on their left and right sides, and the lower and upper clamps are fixed by locking bolts passing through the two connecting ear plates.

[0021] Preferably, the bottom center of the lower clamp is provided with a notch, and the bottom of both sides of the notch is provided with fixing plates. A fixing base is provided between the bottoms of the two fixing plates. The fixing base is provided with fixing elongated holes on both the left and right sides. The fixing elongated holes are open on the outside, and the fixing base is fixed to the fourth connecting flange by locking bolts passing through the third connecting flange, the fourth connecting flange and the fixing elongated holes.

[0022] Preferably, a sliding cavity is formed between the two fixed plates, and at least two vertical sliding grooves are provided on both the left and right sides of the sliding cavity. The top of the sliding groove is open, and a pressing block is slidably connected in the sliding cavity. Limiting slide strips are provided on both the left and right sides of the pressing block. The limiting slide strips are slidably connected in the sliding groove, and a second compression spring is provided between the bottom of the pressing block and the upper surface of the fixed base.

[0023] Preferably, the upper surface of the extrusion block has an arc-shaped structure, and the upper surface of the extrusion block and the inner walls of the upper and lower clamps are provided with a buffer layer.

[0024] In summary, compared with the prior art, the present invention has the following beneficial technical effects:

[0025] (1) This utility model is flexible and adaptable. It integrates a height adjustment component and an angle adjustment component. The height adjustment can achieve precise lifting and lowering of the limit slide cylinder through the cooperation of the adjustment screw, adjustment ear plate and limit slide plate to meet different installation height requirements. The angle adjustment can achieve the rotation adjustment of the pipe clamp component through the cooperation of the arc adjustment groove and the fixing hole to adapt to LNG flexible pipes with different laying angles. At the same time, the fixing long hole on the fixing base can achieve fine adjustment in the horizontal direction, which greatly improves the on-site adaptability of the support and hanger.

[0026] (2) This utility model adopts a double compression spring buffer design. The first compression spring can absorb the vertical vibration energy of the pipeline, and the second compression spring forms elastic support for the pipeline through the compression block, further buffering the vibration displacement. Under the synergistic effect, it can effectively weaken the transmission of vibrations of different frequencies and directions, and avoid the loosening of pipeline joints and sealing failure. At the same time, the buffer layer can not only absorb vibration energy, but also reduce pipeline wear and ensure the long-term stable operation of LNG flexible pipeline.

[0027] (3) The present invention has reliable sealing and protection and long service life: the top cover of the support cylinder and the sealing ring of the inner wall of the limiting sliding hole form a reliable sealing structure, which can effectively block external dust from entering the internal adjustment mechanism from the top, and avoid the parts from rusting and jamming; the gaskets between each nut and the contact parts can disperse pressure, prevent loosening, and improve structural stability.

[0028] (4) This utility model is easy to install and has low maintenance costs. Most of the components are connected by detachable methods such as flanges and bolts, which facilitates on-site installation, debugging and disassembly maintenance. The opening and closing structure of the pipe clamp assembly can quickly realize the installation and disassembly of the pipe, which is convenient to operate. The overall structure is compact, the parts are highly interchangeable, and the subsequent maintenance and replacement costs are low. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is the front view of this utility model;

[0031] Figure 3 This is an exploded view of the present invention;

[0032] Figure 4 This is a schematic diagram of the internal structure of the support cylinder in this utility model;

[0033] Figure 5 yes Figure 1 Enlarged view of point A in the middle.

[0034] Reference numerals: 1-Base plate, 2-Support plate, 3-First connecting flange, 4-Second connecting flange, 5-Support cylinder, 6-Limiting slide cylinder, 7-Third connecting flange, 8-Fourth connecting flange, 9-Lower clamp, 10-Upper clamp, 11-Connecting plate, 12-Top cover, 13-Limiting slide hole, 14-Sealing ring, 15-Adjusting elongated hole, 16-Limiting slide plate, 17-Adjusting ear plate, 18-Insertion hole, 19-First compression spring, 20-Limiting plate, 21-Adjusting screw, 22-Locking nut, 23-Adjusting nut, 24-Washer, 25-Arc-shaped adjusting groove, 26-Fixing hole, 27-Connecting ear plate, 28-Fixing plate, 29-Fixing base, 30-Fixing elongated hole, 31-Sliding cavity, 32-Sliding groove, 33-Extrusion block, 34-Limiting slide bar, 35-Second compression spring. Detailed Implementation

[0035] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.

[0036] like Figure 1-3 As shown, this utility model discloses a technical solution: a vibration-resistant support for LNG flexible pipelines, including a base plate 1 connected to an installation plane, a support plate 2 vertically arranged on the upper surface of the base plate 1, a first connecting flange 3 arranged on the upper surface of the support plate 2, and a second connecting flange 4 detachably and fixedly connected to the upper surface of the first connecting flange 3; a height adjustment component is installed on the upper surface of the second connecting flange 4, an angle adjustment component is installed on the upper surface of the height adjustment component, and a pipe clamp component is installed on the upper surface of the angle adjustment component; in this embodiment, the base plate 1 is made of Q235 steel plate, and has 4 fixing holes, which are fixedly connected to the installation plane (such as equipment foundation, wall support) by expansion bolts; the support plate 2 is vertically welded to the center of the upper surface of the base plate 1, and the top of the support plate 2 is welded and fixed to the first connecting flange 3; the first connecting flange 3 and the second connecting flange 4 are detachably connected by 4 M12 locking bolts.

[0037] like Figure 4As shown, the height adjustment assembly includes a support cylinder 5, a limiting slide cylinder 6, a third connecting flange 7, a connecting plate 11, a top cover 12, a limiting slide plate 16, an adjusting ear plate 17, a first compression spring 19, an adjusting screw 21, a locking nut 22, an adjusting nut 23, and a washer 24. The support cylinder 5 is made of seamless steel pipe, hollow inside with an opening at the top, and welded to the center of the upper surface of the second connecting flange 4 at the bottom; the connecting plate 11 is an annular steel plate, integrally formed on the top edge of the support cylinder 5; the top cover 12 is a circular steel plate, with the diameter of the central limiting sliding hole 13 matching the outer diameter of the limiting sliding cylinder 6, and the inner wall of the limiting sliding hole 13 is inlaid with a fluororubber sealing ring 14, which can effectively prevent external dust from entering the support cylinder 5 from the top, while ensuring the sealing and smoothness of the limiting sliding cylinder 6 when it moves up and down. The upper surface of the connecting plate 11 is detachably fixed to the top cover 12 by locking bolts; the limiting sliding cylinder 6 is made of seamless steel pipe, with the lower part extending into the support cylinder 5 and the upper part passing through the limiting sliding hole 13 and then welded to the third connecting flange 7; the limiting slide plate 16 is a circular steel plate, slidably connected to the inside of the support cylinder 5, with the diameter of the central insertion hole 18 matching the outer diameter of the limiting sliding cylinder 6, and two adjusting ear plates 17 symmetrically welded on both sides of the limiting slide plate 16, extending out of the adjusting elongated hole 15 on the side wall of the support cylinder 5. The first compression spring 19 is sleeved on the lower part of the limiting slide cylinder 6, with its upper and lower ends abutting against the lower surface of the limiting slide plate 16 and the bottom of the inner wall of the support cylinder 5, respectively; the limiting plate 20 is an annular steel plate, welded to the side wall of the limiting slide cylinder 6, and located above the limiting slide plate 16, so as to realize the linkage between the limiting slide plate 16 and the limiting slide cylinder 6.

[0038] The first compression spring 19 mentioned above is made of high-strength alloy spring steel (such as 60Si2MnA), which has excellent elastic restoring performance, fatigue resistance and material damping characteristics. Its elastic coefficient is designed to match the low-frequency pulsating vibration frequency of the LNG flexible pipeline (normal vibration frequency 1-10Hz).

[0039] The adjusting screw 21 is an M16 high-strength screw, symmetrically arranged on both sides of the support cylinder 5. The upper part passes through the connecting plate 11 and the top cover 12 and is fixed by two locking nuts 22. The lower part passes through the adjusting ear plate 17 and is fixed by two adjusting nuts 23. Each nut and the contacting part is provided with an elastic metal washer 24, which can increase the contact area, disperse the locking pressure of the nut, prevent the parts from being deformed by pressure, and at the same time have a certain buffering effect, reducing the impact of vibration on the locking performance of the nut and preventing the nut from loosening. By rotating the adjusting nut 23, the limiting slide plate 16 can be moved up and down along the adjusting elongated hole 15, thereby driving the limiting slide cylinder 6 to rise and fall synchronously, realizing the precise adjustment of the support height. The adjustment range can be flexibly set according to the length of the adjusting elongated hole 15 to meet different installation height requirements. The locking nut 22 can fix the adjusting screw 21, prevent the position from shifting after adjustment, and improve the structural stability.

[0040] The angle adjustment assembly includes a third connecting flange 7 and a fourth connecting flange 8. The third connecting flange 7 has four arc-shaped adjustment grooves 25 evenly distributed around its circumference. The central angle of the arc-shaped adjustment grooves 25 can be set according to the actual angle adjustment requirements, preferably from 0-40°. The fourth connecting flange 8 has four fixing holes 26 at corresponding positions. M12 locking bolts are used to pass through the fixing holes 26 and the arc-shaped adjustment grooves 25 to fix them together, allowing the angle to be adjusted by rotating around the axis. After loosening the locking bolts, the fourth connecting flange 8 can rotate around the axis of the third connecting flange 7 to adjust the angle of the pipe clamp assembly, adapting to LNG flexible pipelines with different laying angles. After adjustment, tightening the locking bolts will fix the assembly. The operation is convenient and the positioning is reliable.

[0041] like Figure 5 As shown, the pipe clamp assembly includes a lower clamp 9, an upper clamp 10, connecting lugs 27, a fixing plate 28, a fixing base 29, a compression block 33, a limiting slide bar 34, and a second compression spring 35. Both the lower clamp 9 and the upper clamp 10 are arc-shaped structures, with connecting lugs 27 welded to both sides and fixed with M16 locking bolts. This detachable connection facilitates pipe installation and removal, and allows for flexible adjustment of the clamp's tightness according to the pipe diameter, ensuring reliable pipe restraint. The lower clamp 9 has a notch at its bottom, with vertical fixing plates 28 welded to the bottom of both sides. A fixing base 29 is welded between the bottoms of the two fixing plates 28. The fixing base 29 is a rectangular steel plate with elongated fixing holes 30 on its left and right sides. The outer openings of the elongated fixing holes 30 are fixed to the third connecting flange 7 and the fourth connecting flange 8 with M12 locking bolts. The elongated fixing holes 30 allow for fine-tuning of the pipe clamp assembly in the horizontal direction, facilitating precise alignment with the pipe position and improving installation convenience.

[0042] Specifically, a sliding cavity 31 is formed between the two fixed plates 28. At least two vertical sliding grooves 32 are provided on both the left and right sides of the sliding cavity 31. The top of the sliding grooves 32 is open. A pressing block 33 is slidably connected inside the sliding cavity 31. The upper surface of the pressing block 33 is arc-shaped. Limiting slides 34 are provided on both the left and right sides of the pressing block 33. The limiting slides 34 are slidably connected within the sliding grooves 32. A second compression spring 35 is provided between the bottom of the pressing block 33 and the upper surface of the fixed base 29. The second compression spring 35 works in conjunction with the first compression spring 19 to further enhance the vertical vibration resistance of the support. Simultaneously, the pressing block 33 provides elastic support to the bottom of the pipe, buffering vertical displacement during pipe vibration. The cooperation between the limiting slides 34 and the sliding grooves 32 ensures the stability of the pressing block 33's vertical movement and prevents displacement.

[0043] The aforementioned second compression spring 35 is made of 60Si2MnA alloy spring steel. This parameter is suitable for the bottom support load and normal small-amplitude vibration (1-10Hz) of the LNG flexible pipeline. It can achieve elastic support while rapidly attenuating the amplitude through its own material damping and contact surface friction. Specifically, when adapting to DN50 pipeline, the elastic coefficient of the first compression spring 19 is 1.5N / mm and the elastic coefficient of the second compression spring 35 is 0.5N / mm; when adapting to DN80 pipeline, the elastic coefficient of the first compression spring 19 is 2.5N / mm and the elastic coefficient of the second compression spring 35 is 0.8N / mm; when adapting to DN100 pipeline, the elastic coefficient of the first compression spring 19 is 3.5N / mm and the elastic coefficient of the second compression spring 35 is 1.2N / mm.

[0044] Specifically, a polyurethane rubber composite buffer layer is attached to the upper surface of the extrusion block 33 and the inner walls of the lower clamp 9 and the upper clamp 10. The buffer layer is made of polyurethane foam and rubber composite material, which has excellent elasticity, wear resistance and low temperature resistance. At the same time, it avoids rigid friction between the pipe and the clamp, protects the outer protective layer of the pipe, further absorbs the vibration energy of the pipe, and improves the vibration resistance effect.

[0045] The installation and adjustment process in this embodiment is as follows:

[0046] 1. Foundation fixing: Fix the base plate 1 to the designated installation position with expansion bolts to ensure that the installation is firm and level.

[0047] 2. Component assembly: Connect the first connecting flange 3 and the second connecting flange 4 in sequence, and assemble the height adjustment component, angle adjustment component and pipe clamp component layer by layer to ensure that the connection of each component is reliable and that the limit slide 6 and limit slide plate 16 move smoothly.

[0048] 3. Height adjustment: According to the installation height requirements of the LNG flexible pipeline, rotate the adjusting nut 23 to drive the limiting slide plate 16 to move up and down along the adjusting elongated hole 15, thereby driving the limiting slide cylinder 6 and the pipeline clamp assembly to rise and fall synchronously. After adjusting to the target height, tighten the adjusting nut 23 and the locking nut 22 to achieve height fixation.

[0049] 4. Angle adjustment: Loosen the locking bolts between the third connecting flange 7 and the fourth connecting flange 8, rotate the fourth connecting flange 8 to a position that matches the pipe laying angle, and tighten the locking bolts to complete the angle fixing.

[0050] 5. Pipeline installation: Open the upper clamp 10, place the LNG flexible pipeline between the lower clamp 9 and the compression block 33, adjust the pipeline to the appropriate position, close the upper clamp 10, tighten the locking bolts on the connecting ear plate 27, and complete the pipeline fixing.

[0051] In this embodiment, during use, the first compression spring 19 and the second compression spring 35 work together to absorb the vertical vibration energy of the pipeline, the buffer layer reduces pipeline wear and assists in vibration reduction, and the sealing ring 14 prevents impurities from entering the interior of the support cylinder 5. The overall structure is stable and has excellent vibration resistance, which can effectively ensure the safe operation of the LNG flexible pipeline.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vibration-resistant support for LNG flexible pipelines, comprising a base plate (1) connected to an installation plane, wherein a support plate (2) is vertically provided on the upper surface of the base plate (1), characterized in that: The upper surface of the support plate (2) is provided with a first connecting flange (3), and the upper surface of the first connecting flange (3) is detachably and fixedly connected with a second connecting flange (4); the upper surface of the second connecting flange (4) is equipped with a height adjustment component, the upper surface of the height adjustment component is equipped with an angle adjustment component, and the upper surface of the angle adjustment component is equipped with a pipe clamp component. The height adjustment assembly includes a support cylinder (5), the bottom of which is fixedly installed on the upper surface of the second connecting flange (4). The support cylinder (5) is hollow inside and open at the top. A limiting slide cylinder (6) that can move up and down is slidably connected inside the support cylinder (5). The upper part of the limiting slide cylinder (6) extends out of the support cylinder (5) and is fixedly connected to a third connecting flange (7). The angle adjustment assembly includes a fourth connecting flange (8), which is coaxially arranged with the third connecting flange (7); The pipe clamp assembly includes a lower clamp (9) and an upper clamp (10). The lower clamp (9) is detachably and fixedly connected to the fourth connecting flange (8). The upper clamp (10) is fixedly installed above the lower clamp (9), and an installation cavity for binding the pipe is formed between the lower clamp (9) and the upper clamp (10).

2. The vibration-resistant support for LNG flexible pipelines according to claim 1, characterized in that: The top edge of the support cylinder (5) extends outward to provide a connecting plate (11). The upper surface of the connecting plate (11) is detachably and fixedly connected to a top cover (12) by a locking bolt. A limiting sliding hole (13) is provided in the middle of the top cover (12). The upper part of the limiting sliding cylinder (6) extends out of the support cylinder (5) through the limiting sliding hole (13). The size of the limiting sliding cylinder (6) is adapted to the size of the limiting sliding hole (13). A sealing ring (14) is provided on the inner wall of the limiting sliding hole (13).

3. The vibration-resistant support for LNG flexible pipelines according to claim 2, characterized in that: The upper sidewall of the support cylinder (5) is symmetrically provided with two vertically arranged adjustment elongated holes (15) on the left and right. The support cylinder (5) is slidably connected to a limiting slide plate (16), and the size of the limiting slide plate (16) is adapted to the internal size of the support cylinder (5). The sidewall of the limiting slide plate (16) is symmetrically provided with two left and right adjustment ear plates (17). The two adjustment ear plates (17) extend out of the support cylinder (5) through the corresponding adjustment elongated holes (15) on both sides, and the size of the adjustment ear plate (17) is adapted to the size of the adjustment elongated hole (15). The limiting slide plate (16) has an insertion hole (18) in the middle. The bottom of the limiting slide cylinder (6) extends into the lower part of the limiting slide plate (16) through the insertion hole (18). The size of the insertion hole (18) is adapted to the size of the limiting slide cylinder (6). The lower part of the limiting slide cylinder (6) is fitted with a first compression spring (19). The upper surface of the first compression spring (19) abuts against the lower surface of the limiting slide plate (16), and the lower surface of the first compression spring (19) abuts against the bottom of the support cylinder (5). The side wall of the limiting slide (6) is further extended outward by a limiting plate (20), the lower surface of the limiting plate (20) abutting against the upper surface of the limiting slide (16).

4. The vibration-resistant support for LNG flexible pipelines according to claim 3, characterized in that: Two adjusting screws (21) are symmetrically arranged between the connecting plate (11) and the top cover (12). The upper part of the adjusting screw (21) passes through the connecting plate (11) and the top cover (12), and the adjusting screw (21) is fixed to the connecting plate (11) and the top cover (12) by two locking nuts (22). The lower part of the adjusting screw (21) passes through the adjusting ear plate (17), and the adjusting screw (21) and the adjusting ear plate (17) are fixed by two adjusting nuts (23).

5. A vibration-resistant support for LNG flexible pipelines according to claim 4, characterized in that: Gaskets (24) are provided between the upper locking nut (22) and the upper surface of the top cover (12), between the lower locking nut (22) and the lower surface of the connecting plate (11), and between the upper and lower adjusting nuts (23) and the upper and lower surfaces of the adjusting ear plate (17).

6. The vibration-resistant support for LNG flexible pipelines according to claim 1, characterized in that: The edge of the third connecting flange (7) is provided with a plurality of arc-shaped adjustment grooves (25) evenly circumferentially along its axis, and the arc-shaped adjustment grooves (25) are coaxially arranged with the third connecting flange (7); The side wall of the fourth connecting flange (8) is provided with a plurality of fixing holes (26) evenly circumferentially along its axis. The position of the fixing holes (26) corresponds to the position of the arc-shaped adjustment groove (25). The third connecting flange (7) and the fourth connecting flange (8) are fixed by locking bolts passing through the fixing holes (26) and the arc-shaped adjustment groove (25).

7. The vibration-resistant support for LNG flexible pipelines according to claim 1, characterized in that: The lower clamp (9) and the upper clamp (10) are provided with connecting ear plates (27) extending outward on both the left and right sides, and the lower clamp (9) and the upper clamp (10) are fixed by locking bolts passing through the upper and lower connecting ear plates (27).

8. A vibration-resistant support for LNG flexible pipelines according to claim 7, characterized in that: The bottom center of the lower clamp (9) is provided with a notch, and the bottom of both sides of the notch is provided with a fixing plate (28). A fixing base (29) is provided between the bottoms of the two fixing plates (28). The left and right sides of the fixing base (29) are provided with fixing elongated holes (30). The outer side of the fixing elongated holes (30) is open, and the fixing base (29) and the fourth connecting flange (8) are fixed by locking bolts passing through the third connecting flange (7), the fourth connecting flange (8) and the fixing elongated holes (30).

9. A vibration-resistant support for LNG flexible pipelines according to claim 8, characterized in that: A sliding cavity (31) is formed between the two fixed plates (28). At least two vertical sliding grooves (32) are provided on the left and right sides of the sliding cavity (31). The top of the sliding groove (32) is open. A pressing block (33) is slidably connected in the sliding cavity (31). Limiting slide strips (34) are provided on the left and right sides of the pressing block (33). The limiting slide strips (34) are slidably connected in the sliding groove (32). A second compression spring (35) is provided between the bottom of the pressing block (33) and the upper surface of the fixed base (29).

10. A vibration-resistant support for LNG flexible pipelines according to claim 9, characterized in that: The upper surface of the extrusion block (33) has an arc-shaped structure, and the upper surface of the extrusion block (33) and the inner walls of the upper clamp (10) and the lower clamp (9) are provided with a buffer layer.

Images