A skid-mounted hydrogen pipeline system vibration and stress simulation test support

Abstract

The utility model discloses a pry mounted hydrogen pipeline system vibration and stress simulation test support relates to pipeline support technical field, including at least two support bars and drive assembly, the top of support bar is provided with the connecting piece for with the flange screw connection of hydrogen pipeline, the bottom fixed connection of support bar has the sliding plate, through the collaborative movement mechanism of drive piece drive straight guide groove and curved drive groove inner sliding rod, realizes the synchronous linkage and accurate regulation of multiple support bars, through the rotation of drive board control of single drive piece, through the geometric cooperation of curved drive groove and straight guide groove, convert the translation into the linear motion of each support bar, ensure that the multiple point displacement is synchronous, and the trajectory is consistent, compared with traditional independent adjustment mode, has improved the regulation accuracy and operating efficiency significantly, and single person operation can complete the multiple support point cooperative positioning quickly, avoids the pipeline deformation or connection damage because of uneven stress.

Description

Technical Field

[0001] This utility model relates to the field of pipeline support technology, specifically a skid-mounted hydrogen pipeline system vibration and stress simulation test support. Background Technology

[0002] A skid-mounted vibration and stress simulation test bracket for hydrogen pipeline systems is an integrated, mobile test support device specifically designed for the research and verification of high-pressure hydrogen pipeline systems. This bracket is integrated onto one or more standard skid-mounted bases via a modular structure, enabling overall hoisting and rapid positioning. It is suitable for dynamic performance testing in laboratories, pilot-scale platforms, and field conditions.

[0003] In existing technologies, when conducting vibration and stress simulation tests on hydrogen pipeline systems, multiple independent support brackets are typically used to fix and support different positions of the pipeline. These brackets are mostly fixed-height or manually adjustable structures, lacking a linkage mechanism between the support points. Operators must adjust the height and angle of each bracket individually and tighten the locking bolts. The adjustment process is cumbersome and time-consuming, and it is difficult to ensure the consistency of the spatial position and stress state of multiple support points. Due to the lack of synchronous control, asynchronous displacement and uneven loading of the support rods often occur, resulting in additional bending stress or uneven loading on the flange connection surface during pipeline installation. This not only affects the test accuracy but may also cause sealing failure or damage to the connectors.

[0004] To address this, we propose a skid-mounted test stand for simulating vibration and stress in hydrogen pipeline systems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a skid-mounted vibration and stress simulation test bracket for hydrogen pipeline systems, which can effectively solve the problems in the background technology.

[0006] Technical solution

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a skid-mounted vibration and stress simulation test bracket for a hydrogen pipeline system, comprising at least two support rods and a drive assembly. The top of the support rod is provided with a connector for threaded connection with a flange of the hydrogen pipeline. A sliding plate is fixedly connected to the bottom of the support rod. Sliding rods are fixedly connected to the upper and lower ends of the sliding plate. The drive assembly is slidably connected to the sliding rods and the sliding plate, respectively.

[0008] Furthermore, the drive assembly includes a mounting bracket, a drive plate is rotatably connected to the top of the mounting bracket, the upper and lower ends of the sliding rod are slidably connected to the mounting bracket and the drive plate respectively, and drive components are provided on the mounting bracket and the drive plate.

[0009] Furthermore, the outer surface of the mounting bracket is provided with multiple rectangular grooves, and the sliding plate is slidably connected to the inner wall of the rectangular grooves.

[0010] Furthermore, the bottom of the mounting bracket is provided with a straight guide groove matching the number of support rods, and the drive plate is provided with a curved drive groove matching the number of support rods. The upper and lower ends of the sliding rod are respectively in contact with the inner walls of the straight guide groove and the curved drive groove.

[0011] Furthermore, the driving component includes a worm gear fixedly connected to the top of the driving plate and a worm rotatably connected to the inner wall of the mounting bracket. The worm gear meshes with the worm, and a driving handle is fixedly connected to one end of the worm.

[0012] Furthermore, the connector includes a connecting rod, a first nut, and a second nut. The connecting rod has a threaded portion in the middle. The threaded portion of the connecting rod passes through the first nut, the support rod, and the second nut in sequence. One end of the connecting rod is fixedly connected to a connecting piece, which is threadedly connected to the flange of the hydrogen pipeline.

[0013] Beneficial effects

[0014] Compared with the prior art, this utility model provides a skid-mounted test bracket for vibration and stress simulation of hydrogen pipeline systems, which has the following advantages:

[0015] This invention relates to a skid-mounted hydrogen pipeline system vibration and stress simulation test bracket. The bracket utilizes a drive component to activate a coordinated motion mechanism between a straight guide groove and a sliding rod within a curved drive groove. This mechanism enables synchronous linkage and precise adjustment of multiple support rods. By controlling the rotation of the drive plate with a single drive component, and through the geometric cooperation of the curved drive groove and the straight guide groove, translational motion is converted into linear motion of each support rod. This ensures synchronous displacement and consistent trajectory across multiple points. Compared to traditional independent adjustment methods, this significantly improves adjustment accuracy and operational efficiency. A single operator can quickly complete the coordinated positioning of multiple support points, avoiding pipeline deformation or connection damage caused by uneven stress. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of the skid-mounted hydrogen pipeline system vibration and stress simulation test bracket provided by this utility model;

[0017] Figure 2 A schematic diagram of the state of the skid-mounted hydrogen pipeline system vibration and stress simulation test bracket provided by this utility model;

[0018] Figure 3 This is a disassembled schematic diagram of the skid-mounted hydrogen pipeline system vibration and stress simulation test bracket provided by this utility model.

[0019] Figure 4A schematic diagram of the support rod provided by this utility model.

[0020] The following are the labels in the diagram: 1. Support rod; 2. Sliding plate; 3. Sliding rod; 4. Connecting rod; 5. First nut; 6. Second nut; 7. Connecting piece; 8. Mounting bracket; 9. Rectangular groove; 10. Straight guide groove; 11. Drive plate; 12. Curved drive groove; 13. Worm gear; 14. Worm. Detailed Implementation

[0021] To make the technical means, creative features, and achieved objectives and effects of this utility model readily understandable, the present utility model will be further described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] To address the shortcomings of existing technologies, such as Figure 1-4 As shown, this utility model provides a skid-mounted vibration and stress simulation test bracket for hydrogen pipeline systems, which is particularly suitable for fatigue durability testing of high-pressure hydrogen pipelines under thermal vibration coupling conditions. The device includes at least two symmetrically arranged support rods 1 and an integrated drive component, which can realize multi-degree-of-freedom dynamic support and controlled displacement loading of the flange connection point of the hydrogen pipeline, simulating the composite stress state caused by factors such as thermal expansion and vibration excitation in actual operation.

[0023] Each support rod 1 has a connector at its top for connecting to the flange of the hydrogen pipeline. The connector can move spatially with the support rod 1 as a whole, thereby applying a controllable mechanical load to the pipeline. A sliding plate 2 is fixedly connected to the bottom of the support rod 1. The sliding plate 2 is a high-strength metal plate structure, and sliding rods 3 are vertically fixed at its upper and lower ends. The sliding rods 3 extend in the vertical direction and serve as a guide element for driving force transmission.

[0024] The drive assembly includes a cylindrical mounting bracket 8, which is made of high-strength aluminum alloy or welded steel structure, and has good rigidity and deformation resistance. A drive plate 11 is slidably connected to the top of the mounting bracket 8. The drive plate 11 can be rotated in the horizontal plane under the control of the drive component. The upper end of the sliding rod 3 is slidably connected to the drive plate 11, and the lower end is slidably connected to the mounting bracket 8, forming a stable double-end guide structure to ensure straightness and stability during the movement.

[0025] On the outer surface of the mounting bracket 8, multiple rectangular slots 9 are vertically oriented. The number of rectangular slots 9 corresponds one-to-one with the support rod 1. The sliding plate 2 is embedded in the rectangular slot 9 and forms a sliding fit with its inner wall to achieve stable guidance and limiting of the support rod 1 in the vertical direction and prevent lateral sway.

[0026] A straight guide groove 10, matching the number of support rods 1, is provided through the bottom of the mounting bracket 8. The straight guide groove 10 is a through hole structure with its axis perpendicular to the horizontal plane, used to guide the lower end of the sliding rod 3 to slide vertically. The same number of curved drive grooves 12 are provided through the drive plate 11. The axis of the curved drive groove 12 is arranged in an arc or oblique direction, which can convert the axial rotation of the drive plate 11 into the linear motion trajectory of the sliding rod 3. The upper and lower ends of the sliding rod 3 are respectively attached to the inner walls of the straight guide groove 10 and the curved drive groove 12. When the drive plate 11 moves, the sliding rod 3 keeps sliding vertically in the straight guide groove 10, while its upper end slides along an arc path in the curved drive groove 12, thereby driving the support rod 1 to move towards or away from the axis of the mounting bracket 8.

[0027] The drive mechanism adopts a high-precision worm gear 13 and worm 14 transmission mechanism, including a worm gear 13 fixedly connected to the top of the drive plate 11 and a worm 14 rotatably installed on the inner wall of the mounting bracket 8. The worm gear 13 and worm 14 mesh with each other to form a self-locking transmission system, ensuring that the device maintains a stable posture when there is no drive input. One end of the worm 14 extends to the outside of the mounting bracket 8 and is fixedly connected to a drive handle. The operator can precisely control the movement position and speed of the drive plate 11 by manually rotating the handle, so as to achieve fine adjustment of pipeline displacement loading. This structure does not require an external power source, is inherently safe, and is suitable for hydrogen energy testing environments with high explosion-proof levels.

[0028] The connector is used to reliably connect the support rod 1 to the hydrogen pipeline flange. It includes a connecting rod 4, a first nut 5, and a second nut 6. The connecting rod 4 is a stepped shaft structure with an external thread in its middle. This thread passes through the first nut 5, the mounting hole on the support rod 1, and the second nut 6 in sequence. The connecting rod 4 is firmly fixed to the support rod 1 by a double-nut locking method to prevent loosening. One end of the connecting rod 4 extends out of the support rod 1 and is fixedly connected to a connecting piece 7. The connecting piece 7 is an L-shaped or circular metal plate with through holes that match the bolt holes of the hydrogen pipeline flange. The connecting piece 7 is fixedly connected to the flange by bolts to achieve rigid coupling between the pipeline and the support. A ball joint or universal joint structure can be set between the connecting piece 7 and the connecting rod 4 to accommodate small angular deviations of the flange surface and improve installation adaptability.

[0029] 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 illustrative of the 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.

Claims

1. A skid-mounted test stand for vibration and stress simulation of a hydrogen pipeline system, characterized in that: It includes at least two support rods (1) and a drive assembly. The top of the support rod (1) is provided with a connector for threaded connection with a flange of a hydrogen pipeline. The bottom of the support rod (1) is fixedly connected to a sliding plate (2). The upper and lower ends of the sliding plate (2) are fixedly connected to sliding rods (3). The drive assembly is slidably connected to the sliding rods (3) and the sliding plate (2) respectively.

2. The skid-mounted hydrogen pipeline system vibration and stress simulation test bracket according to claim 1, characterized in that: The drive assembly includes a mounting bracket (8), a drive plate (11) is rotatably connected to the top of the mounting bracket (8), and the upper and lower ends of the sliding rod (3) are slidably connected to the mounting bracket (8) and the drive plate (11) respectively. The mounting bracket (8) and the drive plate (11) are provided with drive components.

3. The skid-mounted hydrogen pipeline system vibration and stress simulation test bracket according to claim 2, characterized in that: The outer surface of the mounting bracket (8) is provided with multiple rectangular grooves (9), and the sliding plate (2) is slidably connected to the inner wall of the rectangular grooves (9).

4. The skid-mounted hydrogen pipeline system vibration and stress simulation test bracket according to claim 3, characterized in that: The bottom of the mounting bracket (8) is provided with a straight guide groove (10) matching the number of support rods (1), and the drive plate (11) is provided with a curved drive groove (12) matching the number of support rods (1). The upper and lower ends of the sliding rod (3) are respectively attached to the inner walls of the straight guide groove (10) and the curved drive groove (12).

5. The skid-mounted hydrogen pipeline system vibration and stress simulation test bracket according to claim 4, characterized in that: The driving component includes a worm wheel (13) fixedly connected to the top of the drive plate (11) and a worm (14) rotatably connected to the inner wall of the mounting bracket (8). The worm wheel (13) meshes with the worm (14), and a drive handle is fixedly connected to one end of the worm (14).

6. The skid-mounted hydrogen pipeline system vibration and stress simulation test bracket according to claim 5, characterized in that: The connector includes a connecting rod (4), a first nut (5) and a second nut (6). The connecting rod (4) has a threaded part in the middle. The threaded part of the connecting rod (4) passes through the first nut (5), the support rod (1) and the second nut (6) in sequence. One end of the connecting rod (4) is fixedly connected to a connecting piece (7). The connecting piece (7) is threadedly connected to the flange of the hydrogen pipeline.

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