Thermal barrier support assembly for long specimen combined and energized testing

Abstract

The utility model discloses a kind of temperature insulation support assemblies for long test piece comprehensive parallel test, applied to the comprehensive test system of multiple vibration test benches sharing an environmental simulation box.The temperature insulation support assembly is one-to-one corresponding with vibration test bench, and is arranged in straight line along X-axis direction, for positioning and supporting test piece in environmental simulation box, while isolating the environment in box to protect vibration table.Each group of temperature insulation support assemblies includes ball head bearing, water-cooling adapter, flexible temperature insulation structure and clamp for clamping test piece in turn from bottom to top;Ball head bearing is fixed on the top of dynamic ring of platform body.The assembly is also provided with temperature insulation cover, at least coated around ball head bearing, its lower end is sealingly fixed with the bottom plate of environmental simulation box, and the upper end is sealingly connected with flexible temperature insulation structure.The utility model not only realizes reliable support to long test piece, but also effectively blocks the adverse effects of temperature and humidity and other conditions in environmental simulation cavity on vibration table.

Description

Technical Field

[0001] This utility model relates to the field of environmental and vibration testing equipment, specifically to a thermal insulation support assembly for integrated and shunt testing of long specimens. Background Technology

[0002] In the field of deep-sea oil and gas exploration and development, directional drilling equipment is a key piece of equipment, and its reliability directly affects operational safety and efficiency. This type of equipment contains numerous long structural components, some reaching tens of meters in length, and their performance and lifespan under the coupled high temperature, high pressure, and complex vibration environments of the deep sea are crucial. To verify its reliability, it is necessary to simulate these harsh operating conditions through testing.

[0003] For long specimens like these, simultaneous excitation of multiple vibration test benches is currently the most effective testing method. However, a key technical bottleneck in conducting multi-bench parallel excitation tests under high-temperature environments lies in the support structure connecting the vibration benches and the high-temperature environmental chamber. This structure must simultaneously meet the following requirements: supporting and fixing the long specimens, transmitting vibration excitation, and isolating the high-temperature environment to protect the temperature-sensitive vibration bench equipment.

[0004] Currently, the main technical challenge in this field is that existing support structures struggle to simultaneously achieve both efficient thermal insulation and reliable mechanical properties. On one hand, if thermal insulation is prioritized, the structure's stiffness and strength are often insufficient, making it difficult to reliably support long specimens and effectively transfer complex vibration loads from multiple coordinated vibrations, potentially leading to specimen instability or distorted vibration transmission. On the other hand, if mechanical support is prioritized, rigid connections can create significant thermal bridging effects, failing to effectively block heat transfer from the high-temperature environment to the vibration table, seriously threatening the safe operation of the vibration table and affecting the accuracy of experimental data.

[0005] Therefore, how to overcome the limitations of existing technologies and resolve the contradiction between the "temperature insulation" and "support" of the support structure in the high-temperature and excitation test of long specimens has become a key technical problem that urgently needs to be solved in this field. This is crucial for promoting the development of reliability testing technology for high-end deep-sea equipment. Utility Model Content

[0006] The purpose of this invention is to provide a thermal insulation support assembly for integrated and excited testing of long specimens.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A thermal insulation support assembly for combined excitation and shunt testing of long specimens is applied in a combined testing system. The system includes multiple vibration test benches for conducting combined excitation and shunt testing, and an environmental simulation chamber simultaneously connected above each of the vibration test benches. The interior of the environmental simulation chamber is a sealed environmental simulation cavity, and its length is greater than the length of the specimen simultaneously positioned above each vibration test bench. The vibration test bench is equipped with a thermal insulation support assembly for positioning and supporting the specimen. The thermal insulation support assembly is sealed and thermally insulated from the bottom plate of the environmental simulation chamber. The thermal insulation support assembly is provided in multiple sets, and is set one-to-one with the vibration test bench, and each of the thermal insulation support assemblies is set in the same straight line in the X-axis direction; Each thermal insulation support assembly includes, in order from bottom to top, a ball bearing, a water-cooled adapter, a flexible thermal insulation structure, and a clamp for clamping the specimen; The ball bearing is fixed to the top of the moving ring of the platform. It also includes a thermal insulation cover, which is at least placed around the periphery of the ball bearing, and is sealed and fixed to the upper surface of the base plate below it, and is sealed and fitted with the flexible thermal insulation structure above it.

[0008] A further technical solution is that the flexible thermal insulation structure includes a thermal insulation plate and a thermal insulation film positioned on the thermal insulation plate; the thermal insulation plate is fixed to the top of the water-cooled adapter, and the outer edge of the thermal insulation film is positioned at the upper part of the ball-head thermal insulation cover.

[0009] In a further technical solution, the water-cooled adapter has an inlet and an outlet on its side, and an internal water flow channel for cooling the water-cooled adapter.

[0010] In a further technical solution, the water-cooling adapter is tapered, wider at the top and narrower at the bottom.

[0011] In a further technical solution, the side of the water-cooled adapter is provided with multiple heat dissipation fins.

[0012] In a further technical solution, the bottom plate of the environmental simulation chamber is provided with clearance holes corresponding to the thermal insulation support assembly.

[0013] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0014] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0015] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0016] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0017] The working principle and advantages of this utility model are as follows: This utility model discloses a thermal insulation support assembly for integrated shunt testing of long specimens. It serves two purposes: supporting the specimen and isolating the environment within the environmental simulation chamber to prevent adverse effects of environmental factors on the vibration test bench.

[0018] The thermal insulation support assembly includes a ball bearing, a water-cooled adapter, a flexible thermal insulation structure, and a thermal insulation cover. Through the combined design of these four components, it achieves the following technical effects under combined vibration and environmental testing modes: The ball bearing design endows the assembly with multi-degree-of-freedom self-aligning capability while transmitting vibrations, effectively compensating for alignment errors between multiple vibration tables and during the installation of long specimens. This not only ensures that vibration excitation can be accurately transmitted axially to the long specimen, avoiding lateral stress or bending moment caused by misalignment, but also ensures the reliable positioning of the long specimen at each support point, laying the foundation for obtaining accurate and consistent test data.

[0019] The thermal insulation cover is designed for testing temperatures (especially extreme temperatures) inside the environmental simulation chamber. Through its thermal insulation properties, it blocks most of the heat from entering, significantly reducing the temperature load transferred to the supporting structure below.

[0020] The water-cooled adapter addresses the residual heat from the insulation cover and the heat generated by the vibration table itself. It actively removes heat via external circulating water, ensuring the moving coil of the vibration table remains within a safe temperature range. This not only prevents equipment damage due to overheating but also ensures the temperature field within the environmental simulation chamber is unaffected by the table's temperature, thereby improving the accuracy of the test data.

[0021] The flexible thermal insulation structure, as a key component connecting the two, not only achieves a reliable seal at the bottom of the environmental simulation chamber, ensuring the stability of the temperature and humidity environment, but its flexibility also ensures that the mechanical vibrations generated by the vibration table can be transmitted to the specimen with almost no loss. This perfect balance between the contradiction between "static sealing" and "dynamic vibration" is a prerequisite for the effective operation of the other two components. Attached Figure Description

[0022] Appendix Figure 1 This is a schematic diagram of the system structure of an embodiment of the present utility model; Appendix Figure 2 This is a top view of the system according to an embodiment of the present utility model; Appendix Figure 3 for Figure 1A schematic diagram of the AA-direction cross-section; Appendix Figure 4 for Figure 3 Enlarged view of point A in the middle; Appendix Figure 5 for Figure 4 Enlarged view at point I; Appendix Figure 6 This is a schematic diagram of the ball bearing in an embodiment of the present utility model; Appendix Figure 7 This is a schematic diagram of the water-cooled adapter in an embodiment of this utility model; Appendix Figure 8 This is a schematic diagram of the clamp in an embodiment of the present utility model; Appendix Figure 9 This is a schematic diagram of the ball-head heat insulation cover in an embodiment of this utility model; Appendix Figure 10 This is a schematic diagram of a vibration test bench after it has been moved, according to one embodiment of the present invention.

[0023] In the attached diagrams: 1. Horizontal base; 2. Environmental simulation chamber; 21. Environmental simulation cavity; 26. Base plate; 27. Clearance hole; 3. Vibration test bench; 31. Moving coil of the bench; 4. Specimen; 6. Thermal insulation support assembly; 61. Ball bearing; 62. Tapered water-cooled adapter; 63. Flexible thermal insulation structure; 631. Thermal insulation plate; 632. Thermal insulation film; 64. Clamp; 65. Ball head thermal insulation cover. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0025] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0026] See appendix Figure 1 , Figure 2 As shown, this embodiment discloses a thermal insulation support assembly for a combined excitation test of a long specimen, which is applied to a combined test system. The system includes multiple vibration test benches 3 for conducting combined excitation tests, which are set on a horizontal base 1, and an environmental simulation chamber 2 that is simultaneously attached above each of the vibration test benches 3. The interior of the environmental simulation chamber is a sealed environmental simulation cavity 21, the length of which is greater than the length of the specimen 4 that is simultaneously positioned above each vibration test bench 3.

[0027] like Figures 3-5As shown, the vibration test bench 3 is equipped with a thermal insulation support assembly 6 for positioning and supporting the specimen 4. The thermal insulation support assembly 6 is sealed and thermally insulated from the bottom plate 26 of the environmental simulation chamber 2.

[0028] Multiple sets of the thermal insulation support components 6 are provided and are arranged one-to-one with the vibration test bench 3. Each thermal insulation support component 6 is arranged in a straight line in the X-axis direction and is used for positioning support of the specimen 4 (long specimen).

[0029] Each thermal insulation support assembly 6 includes ball bearings 61 connected sequentially from bottom to top (see...). Figure 6 ), conical water-cooled adapter 62 (see Figure 7 ), flexible thermal insulation structure 63 and clamp 64 (see) Figure 8 ), used to clamp rod-shaped specimen 4.

[0030] The ball bearing 61 is fixed to the moving ring 31 of the test bench and is used for mechanical decoupling when multiple (dual) vibration test benches are tested in parallel.

[0031] Also includes the ball head insulation cover 65 (see Figure 9 The ball head insulation cover 65 is installed around the conical water-cooled adapter 62 and the ball head bearing 61, and is sealed and fixed to the upper surface of the base plate 26 below, and is sealed and fitted with the flexible thermal insulation structure 63 above. The ball head insulation cover 65 is used to isolate the temperature (such as high temperature) in the environmental simulation chamber 2 to avoid adverse effects on the ball head bearing 61.

[0032] The flexible thermal insulation structure 63 includes a thermal insulation plate 631 and a thermal insulation film 632 positioned on the thermal insulation plate 631. Figure 4 , Figure 5 As shown, the insulation plate 631 is fixed to the top of the conical water-cooled adapter 62, and the outer edge of the insulation film 632 is positioned at the upper part of the ball-shaped insulation cover 65. This design can achieve both thermal insulation and sealing of the gap between the insulation plate 631 and the ball-shaped insulation cover 65, and flexible connection between the insulation plate 631 and the ball-shaped insulation cover 65.

[0033] Preferably, the heat insulation film 632 can be made of heat-resistant silicone rubber, which is a material of existing technology and will not be described in detail in this case.

[0034] Preferably, the conical water-cooled adapter 62 has an inlet and an outlet on its side, and has a water flow channel inside for cooling the water-cooled adapter (not shown in the figure).

[0035] The tapered water-cooling adapter 62 is designed to be wider at the top and narrower at the bottom to ensure effective support for the specimen 4. Multiple heat dissipation fins can be provided on its side to increase the heat dissipation area of ​​the air-cooled system. Combined with the superimposed water cooling system, this further ensures the heat dissipation effect and provides sufficient structural strength for the tapered water-cooling adapter 62 to meet its support requirements.

[0036] In practice, the temperature and flow rate of the circulating water can be adjusted according to design requirements or the real-time detected temperature at the bottom of the water-cooled adapter. During operation, the water-cooled adapter is connected to external circulating water. Both the temperature inside the upper environmental simulation chamber 21 and the temperature of the moving coil 31 of the lower vibration test bench 3 can be carried away by the external circulating water through the water-cooled adapter. This prevents temperature transfer to the moving coil 31 during high-temperature testing, thus avoiding overheating of the vibration test bench 3 and potential malfunctions or damage. It also ensures that the temperature inside the environmental simulation chamber 21 is not affected by the temperature of the moving coil 31.

[0037] The environmental simulation chamber 2 has a clearance hole 27 on its bottom plate 26 corresponding to the thermal insulation support assembly. The bottom plate 26 is made of a pressure-bearing plate with an insulation layer, providing thermal insulation, pressure resistance, and load-bearing capacity. The diameter of the clearance hole 27 on the bottom plate 26 can be flexibly configured according to requirements. In some embodiments, the bottom plate 26 can be designed to be detachable from the bottom of the chamber.

[0038] Preferred, such as Figure 10 As shown, at least one of the vibration test benches 3 is driven and its position is adjustable along the X-axis via a guide rail. This design is intended to accommodate the requirements of parallel vibration tests on specimens 4 of different lengths. The base plate 26 can be configured as a multi-piece assembly, with seals at the joints to ensure a tight seal after the vibration test bench 3 has been moved.

[0039] Preferably, a heating device (such as a heating wire) can be directly installed inside the environmental simulation chamber 2 of the present invention. Since the heating device is relatively conventional and its installation location does not have special requirements, it is not shown in the diagram of the chamber. In addition, besides high-temperature testing, the environmental tests of the present invention can also simulate other environmental tests such as low temperature and humidity by setting up other corresponding equipment. Therefore, the present invention is not limited to the type of environmental test.

[0040] In summary, the design of the thermal insulation support component brings the following synergistic value: 1. Comprehensive protection: From high-temperature source isolation to heat dissipation through conduction paths and temperature control of core components, a multi-layered and three-dimensional temperature protection system is formed.

[0041] 2. Ensuring test accuracy: It not only protects the equipment but also ensures the purity of the vibration excitation and the stability of the temperature field, laying a solid foundation for obtaining true and reliable test data.

[0042] 3. Improve system reliability: Through division of labor and cooperation, the adverse effects of high temperature environment on precision vibration table are minimized, which greatly enhances the robustness and service life of the entire composite test system.

[0043] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A thermal insulation support assembly for combined excitation and shunt testing of long specimens, characterized in that: The system is applied to a comprehensive testing system, which includes multiple vibration test benches for conducting tandem excitation tests, and an environmental simulation chamber simultaneously mounted on top of each vibration test bench; the interior of the environmental simulation chamber is a sealed environmental simulation cavity, and its length is greater than the length of the specimen simultaneously positioned on top of each vibration test bench. The vibration test bench is equipped with a thermal insulation support assembly for positioning and supporting the specimen. The thermal insulation support assembly is sealed and thermally insulated from the bottom plate of the environmental simulation chamber. The thermal insulation support assembly is provided in multiple sets, and is set one-to-one with the vibration test bench, and each of the thermal insulation support assemblies is set in the same straight line in the X-axis direction; Each thermal insulation support assembly includes, in order from bottom to top, a ball bearing, a water-cooled adapter, a flexible thermal insulation structure, and a clamp for clamping the specimen; The ball bearing is fixed to the top of the moving ring of the platform. It also includes a thermal insulation cover, which is at least placed around the periphery of the ball bearing, and is sealed and fixed to the upper surface of the base plate below it, and is sealed and fitted with the flexible thermal insulation structure above it.

2. The thermal insulation support assembly for integrated shunt testing of long specimens according to claim 1, characterized in that: The flexible thermal insulation structure includes a thermal insulation board and a thermal insulation film positioned on the thermal insulation board; The insulation plate is fixed to the top of the water-cooled adapter, and the outer edge of the insulation film is positioned at the upper part of the ball-head insulation cover.

3. The thermal insulation support assembly for integrated shunt testing of long specimens according to claim 1, characterized in that: The water-cooled adapter has an inlet and an outlet on its side, and an internal water flow channel for cooling the adapter.

4. The thermal insulation support assembly for integrated shunt testing of long specimens according to claim 1, characterized in that: The water-cooled adapter is tapered, wider at the top and narrower at the bottom.

5. The thermal insulation support assembly for integrated shunt testing of long specimens according to claim 4, characterized in that: The water-cooled adapter has multiple heat dissipation fins on its side.

6. The thermal insulation support assembly for integrated shunt testing of long specimens according to claim 1, characterized in that: The bottom plate of the environmental simulation chamber has clearance holes corresponding to the thermal insulation support assembly.

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