Pipe clamp test tool

Abstract

The invention relates to the technical field of pipe clamp test devices, and provides a pipe clamp test tool which comprises a tool body, a force application plate and a spring force application structure. The tool body is of a submarine pipeline simulation structure and is matched with a to-be-tested pipe clamp so that the to-be-tested pipe clamp can clamp and bind the to-be-tested pipe clamp. The force application plate can be attached to the axial end face of the pipe clamp in the axial direction and can axially move relative to the tool body, and it is guaranteed that axial force is transmitted without deviation. The spring force application structure and the tool body are relatively fixed and connected with the force application plate, and continuous and controllable axial force can be applied. Through the structural arrangement, the tool body is a simulation structure of the submarine pipeline, the installation state of the to-be-tested pipe clamp can be attached to the actual working state of the submarine pipeline, the spring force application structure is matched to be a pure mechanical structure, and a test can be carried out in water without additional watertight design. The axial anti-sliding test of the pipe clamp in the water environment fitting the actual working condition can be realized, and the accuracy and authenticity of the detection result of the axial anti-sliding performance of the pipe clamp are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of pipe clamp testing equipment, and more particularly to a pipe clamp testing fixture. Background Technology

[0002] In the field of underwater engineering such as offshore oil and gas development and deep-sea mining, the back-mounted pipe clamp is a key connecting component that needs to be firmly fixed to the outside of the main pipe to bear the weight and external forces of the service pipeline, umbilical cable and other auxiliary structures. Its axial anti-slip performance directly determines the operational safety of the underwater pipeline system.

[0003] In the existing technology, pipe clamps need to be tested to verify their axial anti-slip reliability. However, conventional pipe clamp testing devices mostly rely on complex structures such as electronic tensile sensors. The sealing design of such devices is difficult and costly, and they cannot be used directly in water. This results in the test environment being out of sync with the actual working scenario of the pipe clamp, and the test results are difficult to truly reflect the anti-slip performance under underwater working conditions. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a pipe clamp testing fixture.

[0005] This invention provides a pipe clamp testing fixture, comprising: a fixture body adapted to a pipe clamp to be tested for clamping and binding; a force-applying plate axially attached to the axial end face of the pipe clamp to be tested, the force-applying plate being axially movable relative to the fixture body; and a spring-applying structure fixed relative to the fixture body, the spring-applying structure being connected to the force-applying plate, and the spring-applying structure being able to apply an axial force to the force-applying plate.

[0006] According to a pipe clamp testing fixture provided by the present invention, the spring force application structure includes: a first connecting assembly connected to the fixture body; a second connecting assembly connected to the force application plate; a force application spring disposed between the first connecting assembly and the second connecting assembly; and an adjustment mechanism connected between the first connecting assembly and the second connecting assembly and used to adjust the deformation of the force application spring.

[0007] According to a pipe clamp testing fixture provided by the present invention, the spring force application structure further includes a guide rod, which is disposed between the first connecting assembly and the second connecting assembly and sleeved inside the force application spring.

[0008] According to a pipe clamp testing fixture provided by the present invention, the adjusting mechanism includes: an adjusting screw connected between the first connecting assembly and the second connecting assembly; and an adjusting nut connected to the adjusting screw and used to adjust the deformation of the force-applying spring.

[0009] According to a pipe clamp testing fixture provided by the present invention, the first connecting assembly includes: a connecting seat, the connecting seat being connected to the fixture body; and a first connecting plate, the first connecting plate being connected to the connecting seat.

[0010] The second connecting component includes: a second connecting plate connected to the force-applying plate; and a limiting plate disposed between the first connecting plate and the second connecting plate.

[0011] One end of the adjusting screw is located on the side of the first connecting plate away from the limiting plate and the adjusting nut is installed thereon. The other end of the adjusting screw moves through the first connecting plate and is fixedly connected to the limiting plate and the second connecting plate. The force-applying spring is located between the first connecting plate and the limiting plate.

[0012] According to the present invention, a pipe clamp testing fixture is provided, wherein the guide rod includes a guide screw, one end of which is connected to the first connecting plate, and the other end of which passes through the force-applying spring and is connected to the limiting plate.

[0013] According to the present invention, a pipe clamp testing fixture is provided, wherein there are multiple force springs, and the multiple force springs are arranged in a ring around the central axis of the adjusting screw between the first connecting plate and the limiting plate, and each force spring is respectively equipped with a guide rod.

[0014] According to the present invention, a pipe clamp testing fixture further includes a lifting eye screw, which can be inserted into the cable through hole of the pipe clamp to be tested, so as to apply a circumferential force to the pipe clamp to be tested via the lifting eye screw.

[0015] According to the present invention, a pipe clamp testing fixture further includes a fixing seat, which is connected to the fixture body and is adapted to a vibration device for connection with the vibration device to perform vibration testing.

[0016] According to the present invention, a pipe clamp testing fixture is provided, wherein the force-applying spring is a rectangular metal spring.

[0017] The pipe clamp testing fixture provided by this invention includes a fixture body, a force-applying plate, and a spring-loaded force-applying structure. The fixture body is a simulated structure of a subsea pipeline, with its shape and outer diameter consistent with the actual subsea main pipe to which the pipe clamp under test is fitted. This provides a clamping and binding foundation consistent with the actual subsea installation scenario, ensuring that the installation state of the pipe clamp conforms to the actual working conditions. The force-applying plate can precisely fit along the axial direction to the axial end face of the pipe clamp under test and has the freedom to move axially relative to the fixture body, ensuring that the axial force can be directly and without offset transmitted to the pipe clamp. The spring-loaded force-applying structure remains relatively fixed to the fixture body while establishing a stable connection with the force-applying plate. It can apply a continuous and controllable axial force to the force-applying plate through its own elastic deformation, thereby transmitting the axial load to the pipe clamp under test through the force-applying plate, ultimately achieving the axial anti-slip performance test of the pipe clamp in a simulated subsea pipeline scenario.

[0018] With this structural design, the fixture body is a simulation of the subsea pipeline, which allows the installation state of the pipe clamp under test to conform to its actual working state on the seabed. Combined with the spring force application structure, which is a purely mechanical structure, the test can be carried out in water without additional watertight design. Thus, it is possible to realize the axial anti-slip test of the pipe clamp in a water environment that conforms to the actual working conditions, effectively improving the accuracy and authenticity of the test results of the axial anti-slip performance of the pipe clamp. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the pipe clamp testing fixture provided by the present invention. Figure 1 Among them, the pipe clamp test fixture is in the test state of axial anti-slip performance of pipe clamp.

[0021] Figure 2 This is a schematic diagram of the pipe clamp testing fixture provided by the present invention. Figure 2 .

[0022] Figure 3 This is a schematic diagram of the pipe clamp testing fixture provided by the present invention. Figure 3 .

[0023] Figure 4 This is a schematic diagram of the pipe clamp testing fixture provided by the present invention. Figure 4 Among them, the pipe clamp test fixture is in the state of testing the circumferential anti-slip performance of the pipe clamp.

[0024] Figure 5This is a partial structural schematic diagram of the pipe clamp testing fixture provided by the present invention.

[0025] Reference numerals: 100, tooling body; 200, force-applying plate; 310, connecting seat; 320, first connecting plate; 330, second connecting plate; 340, limiting plate; 350, force-applying spring; 360, adjusting screw; 370, adjusting nut; 380, guide rod; 400, lifting eye screw; 500, fixed seat. Detailed Implementation

[0026] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0029] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate different embodiments or examples and features of different embodiments or examples described in this specification to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] The following is combined Figures 1 to 5 This invention describes a pipe clamp testing fixture provided in an embodiment of the invention. It should be understood that the following description is merely an illustrative embodiment of the invention and does not constitute any particular limitation on the invention.

[0032] Embodiments of the present invention provide a pipe clamp testing fixture, such as... Figures 1 to 3 As shown, it includes: a tooling body 100, which is adapted to the pipe clamp to be tested for clamping and binding; a force-applying plate 200, which can be axially attached to the axial end face of the pipe clamp to be tested and can move axially relative to the tooling body 100; and a spring force-applying structure, which is fixed relative to the tooling body 100, connected to the force-applying plate 200, and can apply axial force to the force-applying plate 200.

[0033] In other words, the pipe clamp testing fixture provided by this invention includes a fixture body 100, a force-applying plate 200, and a spring-loaded force-applying structure. The fixture body 100 is a simulated structure of a subsea pipeline, with its shape and outer diameter consistent with the actual subsea main pipe to which the pipe clamp under test is fitted. This provides a clamping and binding foundation consistent with the actual subsea installation scenario, ensuring that the installation state of the pipe clamp conforms to the actual working conditions. The force-applying plate 200 can precisely fit along the axial direction to the axial end face of the pipe clamp under test and has the freedom to move axially relative to the fixture body 100, ensuring that the axial force can be directly and without offset transmitted to the pipe clamp. The spring-loaded force-applying structure remains relatively fixed to the fixture body 100 and establishes a stable connection with the force-applying plate 200. It can apply a continuous and controllable axial force to the force-applying plate 200 through its own elastic deformation, thereby transmitting the axial load to the pipe clamp under test through the force-applying plate 200, ultimately achieving the axial anti-slip performance test of the pipe clamp in a simulated subsea pipeline scenario.

[0034] With this structural design, the tooling body 100 is a simulated structure of a submarine pipeline, which allows the installation state of the pipe clamp under test to conform to its actual working state on the seabed. Combined with the spring force application structure, which is a purely mechanical structure, it can be tested in water without additional watertight design. Thus, it is possible to realize the axial anti-slip test of the pipe clamp in a water environment that conforms to the actual working conditions, effectively improving the accuracy and authenticity of the axial anti-slip performance test results of the pipe clamp.

[0035] In one embodiment of the present invention, the spring force-applying structure includes: a first connecting component connected to the tooling body 100; a second connecting component connected to the force-applying plate 200; a force-applying spring 350 disposed between the first connecting component and the second connecting component; and an adjusting mechanism connected between the first connecting component and the second connecting component and used to adjust the deformation of the force-applying spring 350.

[0036] Furthermore, in one embodiment of the present invention, the spring force-applying structure further includes a guide rod 380, which is disposed between the first connecting component and the second connecting component and sleeved inside the force-applying spring 350.

[0037] In other words, the spring-applying structure includes a first connecting assembly, a second connecting assembly, a force-applying spring 350, and an adjusting mechanism. The first connecting assembly is stably connected to the tooling body 100, providing a reliable mounting support for the entire spring-applying structure and ensuring it remains relatively fixed to the tooling body 100, preventing positional shift during force application. The second connecting assembly is stably connected to the force-applying plate 200, serving as a relay structure for axial force transmission, receiving the force from the spring-applying structure and transmitting it to the force-applying plate 200. The force-applying spring 350, positioned between the first and second connecting assemblies, utilizes its elastic deformation characteristics to generate an axial elastic force, and is the core component for applying axial force to the force-applying plate 200. The adjustment mechanism is connected between the first connecting component and the second connecting component. The adjustment mechanism can change the relative distance between the first connecting component and the second connecting component through its own structural adjustment, thereby realizing flexible adjustment of the deformation of the force spring 350. By adjusting the compression or tension of the force spring 350, the magnitude of the axial force applied to the force plate 200 can be adjusted as needed to meet the test requirements of applying different axial loads to the pipe clamps of different specifications and adapt to various axial anti-slip test conditions.

[0038] Based on the above-described embodiments, the spring force-applying structure further includes a guide rod 380, which passes between the first connecting assembly and the second connecting assembly and is coaxially sleeved inside the force-applying spring 350. The purpose of the guide rod 380 is to effectively guide and constrain the expansion and contraction process of the force-applying spring 350, preventing irregular deformation problems such as radial offset, lateral bending, and torsion during axial compression or tension. This ensures that the force-applying spring 350 always performs stable expansion and contraction along the axial direction, guaranteeing that the axial force generated by the force-applying spring 350 can act accurately and without deviation between the first and second connecting assemblies. This ensures that the axial force transmitted to the force-applying plate 200 is accurately oriented, preventing the force-applying plate 200 from being skewed due to spring deformation offset. This effectively avoids localized stress concentration in the tested pipe clamp during testing, further improving the stability of the axial anti-slip test and the accuracy of the test data.

[0039] In one embodiment of the present invention, the force-applying spring 350 is a rectangular metal spring.

[0040] For example, the rectangular metal spring is made of high-strength metal materials (such as spring steel and stainless steel), and its cross-section is rectangular, unlike conventional circular cross-section springs. The two ends of the rectangular metal spring respectively mate with the first and second connecting components in the spring force-applying structure. During assembly, it is ensured that the spring's extension / contraction direction is consistent with the axial force transmission direction. Under the action of the adjustment mechanism, the deformation is adjusted, thereby applying a stable axial force to the force-applying plate 200. Considering the underwater testing requirements of this fixture, the selected rectangular metal spring has also undergone anti-corrosion treatment. The surface can be coated with protective layers such as zinc or chrome plating, enabling it to adapt to the humid underwater environment and avoiding problems such as rust and elasticity decay caused by long-term immersion, ensuring the structural stability and performance reliability of the spring during testing.

[0041] The rectangular cross-section structure of the rectangular metal spring gives it higher radial stiffness. Compared with conventional circular springs, it is less likely to undergo irregular deformations such as radial offset and lateral bending during axial expansion and contraction. It can always expand and contract stably along the axial direction, ensuring the precise direction of the applied axial force. This further enhances the guiding and limiting effect of the guide rod 380, avoids test errors caused by force offset, and improves the data accuracy of the pipe clamp axial anti-slip test.

[0042] The rectangular metal spring is made of high-strength metal and has undergone anti-corrosion treatment. It has excellent water resistance and corrosion resistance, and can work stably for a long time in a humid underwater environment, extending the service life of the tooling and reducing the maintenance and replacement costs of the test tooling.

[0043] The rectangular spring made of metal has a stable force characteristic curve. Its deformation and output axial force have a precise linear correspondence. With the adjustment mechanism to precisely adjust the deformation, the magnitude of the axial force can be quantitatively controlled. This can meet the axial anti-slip test requirements of pipe clamps of different load levels and provide a reliable force guarantee for the quantitative evaluation of pipe clamp performance.

[0044] Rectangular metal springs have a larger moment of inertia and superior structural strength compared to conventional circular springs. They can withstand greater axial loads without permanent deformation, making them suitable for testing scenarios involving large-scale, high-load-bearing subsea pipe clamps.

[0045] In one embodiment of the present invention, the first connecting component includes: a connecting seat 310, which is connected to the tooling body 100; and a first connecting plate 320, which is connected to the connecting seat 310.

[0046] The second connecting component includes: a second connecting plate 330, which is connected to the force-applying plate 200; and a limiting plate 340, which is disposed between the first connecting plate 320 and the second connecting plate 330.

[0047] One end of the adjusting screw 360 is located on the side of the first connecting plate 320 away from the limiting plate 340 and is fitted with an adjusting nut 370. The other end of the adjusting screw 360 moves through the first connecting plate 320 and is fixedly connected to the limiting plate 340 and the second connecting plate 330. The force spring 350 is located between the first connecting plate 320 and the limiting plate 340.

[0048] In one embodiment of the present invention, the guide rod 380 includes a guide screw, one end of which is connected to the first connecting plate 320, and the other end of which passes through the force-applying spring 350 and is connected to the limiting plate 340.

[0049] Specifically, such as Figures 1 to 3 and Figure 5 As shown, the first connecting component of the spring-applying structure includes a connecting seat 310 and a first connecting plate 320. The connecting seat 310 is securely connected to the tooling body 100, providing a reliable installation support base for the entire spring-applying structure. The first connecting plate 320 is fixedly connected to the connecting seat 310, together forming the connection support end between the spring-applying structure and the tooling body 100. Correspondingly, the second connecting component of the spring-applying structure includes a second connecting plate 330 and a limiting plate 340. The second connecting plate 330 is fixedly connected to the force-applying plate 200, serving as the force transmission end for the spring-applying structure to transmit axial force to the force-applying plate 200. The limiting plate 340 is adapted to be disposed between the first connecting plate 320 and the second connecting plate 330, forming an axial limiting structure for the force-applying spring 350, providing stable abutment support for the force-applying spring 350.

[0050] One end of the adjusting screw 360 extends to the side of the first connecting plate 320 away from the limiting plate 340, and an adjusting nut 370 is installed at this end. The other end of the adjusting screw 360 moves through the through hole opened on the first connecting plate 320 and is fixedly connected to the limiting plate 340 and the second connecting plate 330, so that the limiting plate 340 and the second connecting plate 330 form an integral structure without relative displacement, and can be subjected to force and move axially synchronously. The force-applying spring 350 is adapted to be disposed between the first connecting plate 320 and the limiting plate 340. One end of the force-applying spring 350 abuts against the end face of the first connecting plate 320 facing the limiting plate 340, and the other end abuts against the end face of the limiting plate 340 facing the first connecting plate 320. By turning the adjusting nut 370 in the forward or reverse direction, the adjusting screw 360 can be driven to move axially relative to the first connecting plate 320, thereby changing the distance between the first connecting plate 320 and the limiting plate 340, thereby achieving precise adjustment of the deformation of the force-applying spring 350, and thus controlling the magnitude of the axial force applied to the force-applying plate 200 as needed.

[0051] The guide rod 380 adopts a guide screw structure. One end of the guide screw is fixedly connected to the first connecting plate 320, and the other end extends axially, passing through the internal hollow area of ​​the force spring 350, and then is securely connected to the limiting plate 340. The guide screw and the force spring 350 are coaxially sleeved. A suitable gap is reserved between the inner wall of the force spring 350 and the outer wall of the guide screw. This gap will not hinder the axial expansion and contraction deformation of the force spring 350, and can rely on the structural characteristics of the guide screw to form a reliable radial constraint on the deformation direction of the force spring 350, ensuring the expansion and contraction stability of the force spring 350.

[0052] In this pipe clamp testing fixture, the axial displacement of the adjusting screw 360, adjusted by turning the adjusting nut 370, is the adjustment amount of the distance between the first connecting plate 320 and the limiting plate 340. This adjustment amount is simultaneously the deformation of the force-applying spring 350. According to Hooke's Law, the formula for calculating the axial elastic force is: F = k·ΔL; where F is the axial force applied to the force-applying plate 200 by the force-applying spring 350 after being transmitted through the structure; k is the elastic coefficient of the force-applying spring 350, which is a fixed value; and ΔL is the axial deformation of the force-applying spring 350. This formula allows for direct and accurate calculation of the specific value of the axial force applied during the test, realizing the quantitative control of the axial test force and meeting the different load test requirements of pipe clamps of different specifications.

[0053] For the connection between the connecting seat 310 and the tooling body 100, the first connecting plate 320 and the connecting seat 310, the second connecting plate 330 and the force application plate 200, the guide screw and the first connecting plate 320 and the limiting plate 340, conventional fixed connection methods such as welding and bolt fastening can be selected according to actual usage requirements, or detachable connection methods such as threaded engagement can be selected. All conventional connection methods can achieve the usage function and effect of this structure.

[0054] In one embodiment of the present invention, such as Figure 1 As shown, there are multiple force springs 350, which are arranged in a ring around the central axis of the adjusting screw 360 between the first connecting plate 320 and the limiting plate 340, and each force spring 350 is respectively equipped with a guide rod 380.

[0055] The ring array arrangement of the force-applying springs 350 is uniformly and symmetrically distributed around the adjusting screw 360. The spacing between each force-applying spring 350 is equal, and the force radius is consistent. When the adjusting screw 360 drives the limiting plate 340 to move axially, all force-applying springs 350 can synchronously generate the same deformation. The extension and contraction deformation of each force-applying spring 350 remains highly consistent, preventing excessive force or uneven deformation of a single spring. At the same time, each force-applying spring 350 is independently equipped with a guide rod 380. Each guide rod 380 synchronously forms radial limiting and guiding constraints on the corresponding force-applying spring 350. The extension and contraction direction of each force-applying spring 350 can be precisely defined, ensuring that all force-applying springs 350 extend and contract stably along the axial direction without interfering with or affecting each other.

[0056] The total axial force generated by the synchronous deformation of multiple springs at 350° can still be calculated using Hooke's Law; the total axial force F is... 总 The formula for calculating the sum of the 350° spring force of a single applied spring is: F 总 =n·k·ΔL; where F 总 The formula represents the total axial force applied by multiple force-applying springs 350; n is the number of force-applying springs 350; k is the elastic coefficient of a single force-applying spring 350; and ΔL is the axial deformation of a single force-applying spring 350. This formula allows for precise calculation of the total axial force under a multi-spring arrangement, enabling both quantitative and precise control of the force value and adaptation to different load levels in pipe clamp testing by increasing or decreasing the number of springs and adjusting the spring spacing.

[0057] In this embodiment, each force-applying spring 350 is selected from the same model with consistent specifications and elastic coefficients to ensure consistency in force and deformation. The dimensions and lengths of each guide rod 380 are also matched accordingly to ensure that the guiding and limiting effect on each force-applying spring 350 is the same. The number of ring arrays of force-applying springs 350 can be flexibly adjusted according to the actual test load requirements, all of which can achieve the technical effect of this structure and are within the design scope of this structure.

[0058] With this structural design, multiple force-applying springs 350 are arranged in a uniform ring array, which can achieve uniform distribution and superposition of axial force, making the total axial force applied to the force-applying plate 200 more stable. The force is evenly distributed across all areas of the force-applying plate 200, preventing the force-applying plate 200 from tilting or shifting due to excessive force on a single point or side. The axial force can be uniformly transmitted to the test clamp without deviation, completely solving the problem of local stress concentration that is easy to occur when applying force with a single spring, and greatly improving the uniformity and stability of axial force application. Each force-applying spring 350 is independently equipped with a guide rod 380, and multiple guide rods 380 simultaneously form radial constraints, which can accurately limit the deformation direction of each force-applying spring 350, ensuring that all force-applying springs 350 extend and contract stably along the axial direction, further enhancing the accuracy of the force application direction. By superimposing the elastic forces of multiple springs to form a total axial force, a larger test load can be obtained without using large-specification, large-size single springs. This not only meets the high-load testing requirements of heavy-duty pipe clamps but also adapts to low-load testing conditions by adjusting the number of springs, significantly expanding the load adaptability range of the test fixture. The flexibility and applicability of the structure are significantly improved. Multiple springs deform and are stressed synchronously, and the deformation and stress value of a single spring are distributed, greatly reducing the working load of each spring. This effectively avoids plastic deformation and elastic decay caused by long-term high-load deformation of a single spring, extending the overall service life of the force-applying spring 350. At the same time, the arrangement of multiple springs forms a redundant structure, so the temporary failure of a single spring will not cause the fixture to malfunction, improving the reliability of the test fixture.

[0059] In one embodiment of the present invention, such as Figure 4 As shown, the pipe clamp test fixture also includes: a lifting eye screw 400, which can be inserted into the cable hole of the pipe clamp to be tested, so as to apply circumferential force to the pipe clamp to be tested via the lifting eye screw 400.

[0060] In the above embodiment, a lifting eye screw 400 is added. Through flexible structural adaptation, the tooling can be easily switched between axial anti-slip performance testing and circumferential anti-slip performance testing to meet multi-dimensional testing requirements.

[0061] During circumferential anti-slip performance testing, the spring force-applying structure and force-applying plate 200 originally used for axial testing were disassembled to avoid interference from the spring force-applying structure with the circumferential test, ensuring that the test environment is only suitable for the application and transmission of circumferential force. After switching, the eye screw 400 was inserted into the cable hole of the pipe clamp under test. This cable hole is used to fix the secondary pipe or umbilical cable. The eye screw 400 and the cable hole are assembled with a clearance fit, which ensures that the eye screw 400 can be stably inserted and positioned without causing deformation of the cable hole of the pipe clamp due to interference fit, while also leaving sufficient room for the transmission of circumferential force.

[0062] For example, the eye screw 400 includes a screw body and two eye rings. The screw body is a rigid metal rod with sufficient structural strength to withstand tensile loads during circumferential testing without bending or deformation. The two eye rings are fixedly installed at both ends of the screw body. The eye rings have a closed-loop structure and a smooth polished surface to prevent wear on the connecting parts of the force-applying equipment during force application. The eye rings are connected to the screw body by welding or high-strength bolts to ensure connection strength and eliminate the risk of eye rings falling off or loosening during testing.

[0063] After the lifting screw 400 is stably inserted into the cable hole of the pipe clamp, connect the connecting parts of the external force application device to the lifting rings at both ends of the screw body. Then, start the force application device to apply a smooth and continuous tension to the lifting rings at both ends, with the direction of the tension consistent with the circumferential anti-slip force direction of the pipe clamp. Monitor the tension value in real time through the force application device, and observe the displacement state of the pipe clamp relative to the tooling body 100 until the pipe clamp slips. Record the maximum tension value at this time to complete the test of the circumferential anti-slip performance of the pipe clamp.

[0064] With this structural design, the axial and circumferential anti-slip performance testing of the pipe clamp can be flexibly switched with simple disassembly and assembly, without the need for multiple sets of special tooling, effectively improving the overall utilization rate of tooling and reducing testing costs.

[0065] In one embodiment of the present invention, such as Figures 1 to 5 As shown, the pipe clamp test fixture also includes a fixed base 500, which is connected to the fixture body 100 and is adapted to the vibration equipment for vibration testing.

[0066] Specifically, the mounting base 500 can be integrally formed from high-strength metal sheet. The mounting base 500 is fixedly connected to the bottom of the tooling body 100 through a stable connection method such as bolt fastening and welding. The mounting base 500 has reserved connection interfaces (such as bolt hole groups, snap-fit ​​structures, etc.) adapted to the vibration equipment. The specifications and dimensions of the connection interface match the output end of mainstream vibration equipment, and can be directly and precisely connected to the worktable or output shaft of the vibration equipment without the need for additional adapter components.

[0067] During vibration composite condition testing, the pipe clamp to be tested is clamped and tied to the fixture body 100 according to the actual seabed installation state. Subsequently, the entire fixture is fixedly connected to the vibration equipment through the connection interface reserved in the fixing seat 500, ensuring that the vibration direction transmitted by the vibration equipment is consistent with the vibration direction actually borne by the seabed pipeline. According to the test requirements, vibration parameters, including vibration frequency, vibration amplitude, and vibration duration, are set through the vibration equipment control system. These parameters can be adjusted based on actual seabed working condition data (such as wave impact, ocean current disturbance, and vibration data caused by equipment operation) to achieve accurate simulation of different seabed vibration scenarios.

[0068] By setting a fixed base 500, it can be stably and properly connected to external vibration equipment, accurately simulating various vibration environments of the pipe clamp under actual working conditions on the seabed, filling the gap of traditional static testing. It can also be flexibly combined with axial force and circumferential force structures to carry out composite working condition tests combining vibration and load, comprehensively verifying the actual anti-slip performance of the pipe clamp. The test results are more in line with engineering practice and have higher reference value.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pipe clamp testing fixture, characterized in that, include: Tooling body (100), the tooling body (100) is adapted to the pipe clamp to be tested, so as to clamp and bind the pipe clamp to be tested; The force-applying plate (200) is axially attached to the axial end face of the pipe clamp to be tested, and the force-applying plate (200) is axially movable relative to the tooling body (100). A spring-applying structure is fixed relative to the tooling body (100), the spring-applying structure is connected to the force-applying plate (200), and the spring-applying structure can apply an axial force to the force-applying plate (200).

2. The pipe clamp testing fixture according to claim 1, characterized in that, The spring force-applying structure includes: A first connecting component is connected to the tooling body (100); A second connecting component is connected to the force-applying plate (200); A force-applying spring (350) is disposed between the first connecting assembly and the second connecting assembly; An adjustment mechanism is connected between the first connecting component and the second connecting component and is used to adjust the deformation of the force-applying spring (350).

3. The pipe clamp testing fixture according to claim 2, characterized in that, The spring force-applying structure also includes: A guide rod (380) is disposed between the first connecting assembly and the second connecting assembly and is sleeved inside the force-applying spring (350).

4. The pipe clamp testing fixture according to claim 3, characterized in that, The adjustment mechanism includes: An adjusting screw (360) is connected between the first connecting assembly and the second connecting assembly; Adjusting nut (370), which is connected to adjusting screw (360) and used to adjust the deformation of force spring (350).

5. The pipe clamp testing fixture according to claim 4, characterized in that, The first connection component includes: A connecting seat (310) is connected to the tooling body (100); A first connecting plate (320) is connected to the connecting seat (310); The second connection component includes: The second connecting plate (330) is connected to the force-applying plate (200); A limiting plate (340) is disposed between the first connecting plate (320) and the second connecting plate (330); One end of the adjusting screw (360) is located on the side of the first connecting plate (320) away from the limiting plate (340) and the adjusting nut (370) is installed thereon. The other end of the adjusting screw (360) moves through the first connecting plate (320) and is fixedly connected to the limiting plate (340) and the second connecting plate (330). The force-applying spring (350) is located between the first connecting plate (320) and the limiting plate (340).

6. The pipe clamp testing fixture according to claim 5, characterized in that, The guide rod (380) includes: A guide screw, one end of which is connected to the first connecting plate (320), and the other end of which passes through the force-applying spring (350) and is connected to the limiting plate (340).

7. The pipe clamp testing fixture according to claim 5, characterized in that, The number of force-applying springs (350) is multiple. The multiple force-applying springs (350) are arranged in a ring around the central axis of the adjusting screw (360) between the first connecting plate (320) and the limiting plate (340), and each force-applying spring (350) is respectively equipped with a guide rod (380).

8. The pipe clamp testing fixture according to claim 1, characterized in that, The pipe clamp testing fixture also includes: A lifting eye screw (400) is inserted into the cable through hole of the test clamp to apply a circumferential force to the test clamp via the lifting eye screw (400).

9. The pipe clamp testing fixture according to claim 1, characterized in that, The pipe clamp testing fixture also includes: A fixed base (500) is connected to the tooling body (100), and the fixed base (500) is adapted to the vibration equipment to connect with the vibration equipment for vibration testing.

10. The pipe clamp testing fixture according to any one of claims 2 to 9, characterized in that, The force-applying spring (350) is a rectangular metal spring.

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