Manufacturing method and system of spherical pressure-resistant structure suitable for implosion protection of deep-sea submersible

Abstract

The present invention provides a method and system for manufacturing a spherical pressure-resistant structure suitable for implosion protection in deep-sea submersibles. This method relates to the field of deep-sea submersibles and includes: a method for manufacturing the spherical pressure-resistant structure through compression molding, and a testing method for testing its performance based on both the structural performance indicators and its protective effectiveness in simulated deep-sea environments. This method overcomes the difficulty of traditional methods in meeting manufacturing requirements. This method enables the manufacture of a pressure-resistant structure suitable for implosion protection in deep-sea submersibles, meeting requirements for roundness, smoothness, fit, and structural performance. Furthermore, through experimental testing, the improved implosion protection provided by the pressure-resistant structure is visually verified, laying the foundation for its practical application in submersibles. This invention is of great significance to the design and manufacture of deep-sea submersibles.

Description

Technical Field

[0001] The present invention relates to the technical field of deep-sea pressure-resistant structure manufacturing and performance testing, and in particular to a method for manufacturing a spherical pressure-resistant structure suitable for implosion protection of deep-sea submersibles. Background Art

[0002] As a technical equipment necessary for exploration, deep-sea submersibles, with their important component - pressure-resistant structure, provide protection for the safety of personnel and equipment.

[0003] To further develop deep-sea resources, advanced deep-sea submersibles are needed to carry out exploration missions. However, the high-pressure working environment of the deep sea places high demands on the structural pressure resistance. Furthermore, the enormous pressure differential between the inside and outside of the hollow spherical structure creates the risk of implosion. During an implosion, the hydrostatic pressure of the flow field is converted into fluid kinetic energy. When the airflow compresses the internal air cavity to its minimum, the air inside rebounds outward, generating a shock wave far greater than the ambient pressure, resulting in catastrophic consequences. Therefore, multiple factors must be considered when designing and manufacturing deep-sea submersibles.

[0004] In terms of design and material selection, by combining two materials and laying fiber prepreg on the outside of the pressure-resistant liner, it is possible to meet the pressure-bearing requirements of deep-sea submersibles while also achieving implosion protection. In terms of structural form, the spherical structure, with its perfectly symmetrical geometry, evenly distributes the external forces of water throughout the structure, making it considered an ideal shape for deep-sea submersible flotation devices. Therefore, the use of a spherical pressure-resistant structure combining prepreg and liner in actual submersibles is considered a preferred solution.

[0005] However, the deep-sea working environment requires an ideal hollow sphere, which is difficult to meet with conventional manufacturing solutions. In traditional processing solutions, carbon fiber winding requires a fulcrum. However, for spherical pressure-resistant structures, the fulcrum position is difficult to find, which will make the roundness of the overall structure difficult to control. At the same time, the fit between the lining and the prepreg, and between the prepreg layers, and the smoothness of the overall structure are also difficulties that have yet to be solved in previous processing solutions. At the same time, the application object of this spherical pressure-resistant structure is deep-sea submersibles. First of all, it needs to have pressure resistance that meets the pressure of the deep-sea working environment. At the same time, there are also requirements for the protection performance of the structure itself in the event of a deep-sea implosion.

[0006] In summary, it is necessary to propose a manufacturing method for implosion-resistant pressure structures suitable for deep-sea submersibles. This method, while meeting the requirements of the deep-sea working environment, also meets the requirements for roundness, smoothness, fit, and protective performance. Furthermore, the manufactured structure can be tested as required to achieve overall performance evaluation. This solution has important engineering reference value for the design and manufacture of deep-sea submersibles.

[0007] A Chinese patent application, publication number CN117465640A, discloses a lightweight composite spherical pressure-resistant structure and deep-sea submersible for deep-sea implosion protection. The structure comprises a hollow ceramic sphere inner liner and a CFRP outer layer, which coats the outer surface of the hollow ceramic sphere inner liner. The CFRP outer layer forms a ceramic-CFRP composite spherical pressure-resistant structure. However, the patent only proposes a novel structural concept and does not provide a manufacturing method for the structure. Furthermore, the patent does not demonstrate actual manufacturing or propose a set of testing methods for the structure.

[0008] Existing solutions suffer from the following drawbacks: During actual manufacturing, the hollow ceramic sphere lining and the CFRP outer layer do not fit tightly enough; the CFRP outer layer can be uneven due to entanglement of fiber bundles; and the roundness of the overall structure is difficult to control. Furthermore, because this structure is intended for deep-sea submersibles, which are subject to high ambient pressure and a high risk of implosion, these deficiencies will significantly impact final performance. Furthermore, after manufacturing, a performance testing protocol is required to evaluate the structural performance. However, no testing protocol exists to assess the performance of this pressure-resistant structure, both intrinsically and in terms of its implosion protection, suitable for deep-sea submersibles.

[0009] Therefore, it is necessary to propose a new technical solution to improve the above technical problems. Summary of the Invention

[0010] In view of the defects in the prior art, the purpose of the present invention is to provide a method and system for manufacturing a spherical pressure-resistant structure for implosion protection of deep-sea submersibles.

[0011] According to the present invention, a method for manufacturing a spherical pressure-resistant structure for implosion protection of a deep-sea submersible is provided, which is manufactured by compression molding and specifically comprises the following steps:

[0012] Step S1: prepreg cutting; Step S2: prepreg laying; Step S3: pre-vacuum treatment; Step S4: polishing; Step S5: performance test;

[0013] The step S5 includes: performing performance testing from two aspects: performance indicators of the structure itself and protection effect in a simulated deep-sea environment; the performance indicators of the structure itself include the roundness, smoothness and fit of the overall structure.

[0014] Preferably, the step S1 includes:

[0015] Cut the prepreg and lay it in eight equal parts; lay it in multiple layers. The range is: 5≤ ≤10, increase the cutting area of ​​each layer through gradient way to ensure the roundness of the overall structure;

[0016] Eight-eighth prepreg cut area of ​​the first prepreg layer close to the lining for:

[0017]

[0018] Close to the lining Eight equal parts of the prepreg cutting area for:

[0019]

[0020] in, is the radius of the inner hollow sphere, is the total number of prepreg layers laid, is the total thickness of the prepreg layer.

[0021] Preferably, the step S2 includes: firstly evenly applying epoxy resin on the lining, and then paving the prepreg.

[0022] Preferably, hydrostatic pressurization is used to simulate the pressure in a deep-sea working environment;

[0023] Assume the actual operating depth of the deep-sea submersible , then the static pressure of the water around the pressure-resistant structure under the operating water depth is for:

[0024]

[0025] in, is the fluid density, is the acceleration due to gravity;

[0026] The experimental hydrostatic pressure reached by hydrostatic pressurization is for:

[0027]

[0028] This simulates the pressure in the actual deep-sea working environment.

[0029] Preferably, for the implosion protection spherical pressure-resistant structure suitable for deep-sea submersibles, the peak dynamic pressure captured by the pressure sensor is , the actual peak pressure reached for:

[0030]

[0031] in, The experimental hydrostatic pressure achieved by hydrostatic pressurization;

[0032] For the spherical structure with the same lining, the peak dynamic pressure captured by the pressure sensor is , the actual peak pressure reached for:

[0033]

[0034] Pressure peak reduction rate for implosion protection effect To evaluate, the calculation formula is:

[0035]

[0036] Pressure peak reduction rate The larger it is, the better the implosion protection.

[0037] The manufacturing system of the spherical pressure-resistant structure for implosion protection of deep-sea submersibles provided by the present invention realizes the manufacturing of the spherical pressure-resistant structure for implosion protection of deep-sea submersibles by compression molding, and specifically includes the following modules:

[0038] Module M1: Prepreg cutting; Module M2: Prepreg laying; Module M3: Pre-vacuum treatment; Module M4: Polishing treatment; Module M5: Performance testing;

[0039] The module M5 includes: realizing performance testing from two aspects: performance indicators of the structure itself and protection effect in a simulated deep-sea environment; the performance indicators of the structure itself include the roundness, smoothness and fit of the overall structure.

[0040] Preferably, the module M1 includes:

[0041] Cut the prepreg and lay it in eight equal parts; lay it in multiple layers. The range is: 5≤ ≤10, increase the cutting area of ​​each layer through gradient way to ensure the roundness of the overall structure;

[0042] Eight-eighth prepreg cut area of ​​the first prepreg layer close to the lining for:

[0043]

[0044] Close to the lining Eight equal parts of the prepreg cutting area for:

[0045]

[0046] in, is the radius of the inner hollow sphere, is the total number of prepreg layers laid, is the total thickness of the prepreg layer.

[0047] Preferably, the module M2 includes: firstly evenly applying epoxy resin on the lining, and then laying the prepreg.

[0048] Preferably, hydrostatic pressurization is used to simulate the pressure in a deep-sea working environment;

[0049] Assume the actual operating depth of the deep-sea submersible , then the static pressure of the water around the pressure-resistant structure under the operating water depth is for:

[0050]

[0051] in, is the fluid density, is the acceleration due to gravity;

[0052] The experimental hydrostatic pressure reached by hydrostatic pressurization is for:

[0053]

[0054] This simulates the pressure in the actual deep-sea working environment.

[0055] Preferably, for the implosion protection spherical pressure-resistant structure suitable for deep-sea submersibles, the peak dynamic pressure captured by the pressure sensor is , the actual peak pressure reached for:

[0056]

[0057] in, The experimental hydrostatic pressure achieved by hydrostatic pressurization;

[0058] For the spherical structure with the same lining, the peak dynamic pressure captured by the pressure sensor is , the actual peak pressure reached for:

[0059]

[0060] Pressure peak reduction rate for implosion protection effect To evaluate, the calculation formula is:

[0061]

[0062] Pressure peak reduction rate The larger it is, the better the implosion protection.

[0063] Compared with the prior art, the present invention has the following beneficial effects:

[0064] (1) The lightweight composite spherical pressure-resistant structure for deep-sea implosion protection provided by the present invention improves the manufacturing scheme commonly used in current engineering. It realizes a manufacturing method of the spherical pressure-resistant structure for implosion protection suitable for deep-sea submersibles by a molding method, and realizes a detection method for performance testing from two aspects: the performance index of the structure itself and the protection effect in a simulated deep-sea environment. It overcomes the problem that traditional methods are difficult to meet manufacturing requirements. Through testing, it visually verifies the improvement effect of the implosion protection of the pressure-resistant structure, laying a foundation for its practical application in submersibles.

[0065] (2) The manufacturing scheme proposed in the present invention can successfully manufacture a physical structure, and has passed the test of the detection method. On the basis of meeting the requirements of roundness, smoothness and fit, it has improved the pressure peak reduction rate and has a good implosion protection effect. The method of the present invention is simple and has a significant protection effect, achieving multiple functions such as feasibility and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0067] Figure 1 This is the overall framework diagram of the present invention;

[0068] Figure 2 Schematic diagram of the cutting method of the prepreg into eight equal parts in the invention;

[0069] Figure 3 Schematic diagram of the combination of the lining and 5 layers of prepreg in the invention;

[0070] Figure 4 A diagram of the spherical pressure-resistant structure for implosion protection suitable for deep-sea submersibles manufactured in the invention;

[0071] Figure 5 Schematic diagram of the pressure-time curve with and without protection at 15 MPa in the invention. DETAILED DESCRIPTION

[0072] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0073] Example 1

[0074] The present invention provides a method for manufacturing a spherical pressure-resistant structure suitable for deep-sea submersibles, which aims to solve the problem that traditional methods are difficult to achieve the manufacturing requirements of spherical pressure-resistant structures suitable for deep-sea submersibles, as well as the lack of corresponding performance testing methods. Figure 1 As shown, it specifically includes: a method for manufacturing a spherical pressure-resistant structure for implosion protection suitable for deep-sea submersibles by a molding method, and a detection method for realizing performance testing from two aspects: the performance indicators of the structure itself and the protection effect in a simulated deep-sea environment.

[0075] The wall thickness S1 of the hollow ceramic spherical pressure-resistant structure should be selected based on the actual operating water depth. When a deep-sea submersible is operating, the operating water depth h of the submersible must be determined. This embodiment uses the Mariana Trench, the deepest known ocean, as an example, with an operating depth of 11,000 meters.

[0076] The manufacturing method of the spherical pressure-resistant structure suitable for implosion protection of deep-sea submersibles comprises the following steps: S1 prepreg cutting; S2 prepreg laying; S3 pre-vacuum treatment; and S4 polishing treatment.

[0077] Step S1: Before processing, the prepreg is cut into eight equal parts and laid out. Figure 2 As shown, multiple layers are laid, and the number of layers n is in the range of 5≤n≤10. The roundness of the overall structure is ensured by gradually increasing the cutting area S of each layer.

[0078] The cutting area S of each layer is selected according to the designed number of layers n. In this embodiment, n=5 is the designed number of layers. The radius r of the lining hollow ball is 92 mm, the total number of prepreg layers is 5, and the total thickness of the prepreg layer is is 1.5 mm. Figure 3 shown.

[0079] The first layer of prepreg close to the lining is defined as "layer 1", the second layer of prepreg is defined as "layer 2", the third layer of prepreg is defined as "layer 3", the fourth layer of prepreg is defined as "layer 4", and the fifth layer of prepreg is defined as "layer 5".

[0080] "1 layer" prepreg cutting area divided into eight equal parts for:

[0081] =13375.3 mm2(1)

[0082] "2-layer" prepreg cutting area divided into eight equal parts for:

[0083] =13462.4 mm2(2)

[0084] "3-layer" prepreg cutting area divided into eight equal parts for:

[0085] =13549.7mm2(3)

[0086] "4-layer" prepreg cutting area divided into eight equal parts for:

[0087] =13637.4 mm2(4)

[0088] "5-layer" prepreg cutting area divided into eight equal parts for:

[0089] =13725.3mm2(5)

[0090] Step S2: Before laying the layers, evenly apply epoxy resin on the lining and then lay the prepreg. This ensures the fit between the lining and the prepreg.

[0091] In step S3, after each layer is laid, a pre-vacuum treatment is performed to ensure the fit between the prepreg layers and the overall roundness. This process is repeated to finally achieve multi-layer processing.

[0092] After the multi-layer processing is completed, step S4 performs a polishing process to meet the surface smoothness requirements of the implosion protection spherical pressure-resistant structure suitable for deep-sea submersibles.

[0093] Finally, the manufacturing Figure 4 The figure shown is a spherical pressure-resistant structure suitable for implosion protection of deep-sea submersibles.

[0094] The detection method of the implosion protection spherical pressure-resistant structure applicable to deep-sea submersibles comprises: realizing performance testing from two aspects: performance index of the structure itself and protection effect under simulated deep-sea environment.

[0095] The performance indicators of the structure of the detection method are the roundness, smoothness and fit of the overall structure. The dimensions of the overall structure were calibrated and measured using a vernier caliper, and it was found that the overall roundness, fit and smoothness were good.

[0096] The method of simulating the deep-sea environment is to use hydrostatic pressurization to simulate the pressure in the deep-sea working environment.

[0097] The actual operating water depth of the deep-sea submersible is h; in this embodiment, the operating water depth is 1500m, and the static pressure of the water around the pressure-resistant structure under the operating water depth is for:

[0098] (6)

[0099] The experimental hydrostatic pressure reached by hydrostatic pressurization is for:

[0100] (7)

[0101] This simulates the pressure in the actual deep-sea working environment.

[0102] The structure was subjected to a pressure test by applying hydrostatic pressure to 15 MPa and found to remain stable. Next, a comparative experiment was conducted with a spherical structure with the same lining to evaluate the protective performance. The peak dynamic pressure captured by the pressure sensor was .

[0103] For the implosion protection spherical pressure-resistant structure suitable for deep-sea submersibles proposed in the present invention, the peak dynamic pressure captured by the pressure sensor is For the spherical structure with the same lining, the peak dynamic pressure captured by the pressure sensor is The schematic diagram of the relationship between pressure and time is as follows: Figure 5 .

[0104] Implosion protection effect available pressure peak reduction rate To evaluate, substitute the calculation formula:

[0105] = (8)

[0106] Pressure peak reduction rate reached , which proves that the implosion protection effect is good. Based on the above analysis, it can be seen that the technical solution of the present invention has good impact resistance and protection effect.

[0107] The manufacturing method for an implosion-resistant spherical pressure-resistant structure provided by this invention improves upon the commonly used manufacturing and testing methods in current engineering projects. Furthermore, the following conclusions can be drawn: Through five steps (S1: prepreg cutting; S2: prepreg laying; S3: pre-vacuum treatment; S4: polishing; and S5: performance testing), the method overcomes the difficulties encountered in traditional manufacturing methods in achieving satisfactory roundness, smoothness, and fit. The resulting embodiment demonstrates outstanding structural performance and implosion-resistant properties. Clearly, this invention provides a novel approach to deep-sea pressure-resistant structure manufacturing and holds significant significance for the design, manufacture, and testing of deep-sea submersibles and their associated deep-sea pressure-resistant structures.

[0108] In summary, the lightweight composite spherical pressure-resistant structure for deep-sea implosion protection described in this embodiment improves upon commonly used manufacturing methods in current engineering applications. This method utilizes a compression molding process to achieve a spherical pressure-resistant structure suitable for deep-sea submersible implosion protection. Furthermore, a testing method is developed to measure the performance of the structure itself and its effectiveness in simulated deep-sea environments. This overcomes the difficulties encountered by traditional methods in meeting manufacturing requirements. Experimental testing demonstrates that this embodiment can successfully produce a physical structure based on the manufacturing scheme. Furthermore, the testing method demonstrates that the structure, while meeting requirements for roundness, smoothness, and fit, achieves an improved peak pressure reduction rate and demonstrates superior implosion protection. This embodiment utilizes a simple method, achieves significant protection results, and achieves multiple benefits, including feasibility and safety.

[0109] Example 2

[0110] The present invention also provides a manufacturing system for an implosion-proof spherical pressure-resistant structure suitable for deep-sea submersibles. The manufacturing system for an implosion-proof spherical pressure-resistant structure suitable for deep-sea submersibles can be realized by executing the process steps of the manufacturing method for an implosion-proof spherical pressure-resistant structure suitable for deep-sea submersibles. That is, those skilled in the art can understand the manufacturing method for an implosion-proof spherical pressure-resistant structure suitable for deep-sea submersibles as a preferred embodiment of the manufacturing system for an implosion-proof spherical pressure-resistant structure suitable for deep-sea submersibles.

[0111] The manufacturing system of the spherical pressure-resistant structure for implosion protection of deep-sea submersibles provided by the present invention realizes the manufacturing of the spherical pressure-resistant structure for implosion protection of deep-sea submersibles by compression molding, specifically comprising the following steps:

[0112] Module M1: Prepreg cutting; Module M2: Prepreg laying; Module M3: Pre-vacuum treatment; Module M4: Polishing treatment; Module M5: Performance testing;

[0113] The module M5 includes: realizing performance testing from two aspects: performance indicators of the structure itself and protection effect in a simulated deep-sea environment; the performance indicators of the structure itself include the roundness, smoothness and fit of the overall structure.

[0114] The module M1 includes:

[0115] Cut the prepreg and lay it in eight equal parts; lay it in multiple layers. The range is: 5≤ ≤10, increase the cutting area of ​​each layer through gradient way to ensure the roundness of the overall structure;

[0116] Eight-eighth prepreg cut area of ​​the first prepreg layer close to the lining for:

[0117]

[0118] Close to the lining Eight equal parts of the prepreg cutting area for:

[0119]

[0120] in, is the radius of the inner hollow sphere, is the total number of prepreg layers laid, is the total thickness of the prepreg layer.

[0121] The module M2 includes: firstly evenly applying epoxy resin on the lining, and then laying the prepreg.

[0122] Use hydrostatic pressurization to simulate the pressure in deep-sea working environment;

[0123] Assume the actual operating depth of the deep-sea submersible , then the static pressure of the water around the pressure-resistant structure under the operating water depth is for:

[0124]

[0125] in, is the fluid density, is the acceleration due to gravity;

[0126] The experimental hydrostatic pressure reached by hydrostatic pressurization is for:

[0127]

[0128] This simulates the pressure in the actual deep-sea working environment.

[0129] For the implosion protection spherical pressure-resistant structure suitable for deep-sea submersibles, the peak dynamic pressure captured by the pressure sensor is , the actual peak pressure reached for:

[0130]

[0131] in, is the experimental hydrostatic pressure achieved by hydrostatic pressurization;

[0132] For the spherical structure with the same lining, the peak dynamic pressure captured by the pressure sensor is , the actual peak pressure reached for:

[0133]

[0134] Pressure peak reduction rate for implosion protection effect To evaluate, the calculation formula is:

[0135]

[0136] Pressure peak reduction rate The larger it is, the better the implosion protection.

[0137] Those skilled in the art will appreciate that, in addition to implementing the system, device, and various modules provided by the present invention in purely computer-readable program code, it is entirely possible to implement the same program in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, embedded microcontrollers, and the like by logically programming the method steps. Therefore, the system, device, and various modules provided by the present invention can be considered a hardware component, and the modules included therein for implementing various programs can also be considered structures within the hardware component; the modules for implementing various functions can also be considered both software programs for implementing the method and structures within the hardware component.

[0138] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A method for manufacturing a spherical pressure-resistant structure suitable for implosion protection of deep-sea submersibles, characterized in that: The manufacturing of a spherical pressure-resistant structure suitable for implosion protection of deep-sea submersibles is achieved by compression molding, specifically including the following steps: Step S1: prepreg cutting; Step S2: prepreg laying; Step S3: pre-vacuum treatment; Step S4: polishing; Step S5: performance test; Step S5 includes: performing performance testing on the structure itself and its protection effect in a simulated deep-sea environment; the performance indicators of the structure itself include the roundness, smoothness and fit of the overall structure; The step S1 comprises: Cut the prepreg and lay it in eight equal parts; lay it in multiple layers. The range is: 5≤ ≤10, increase the cutting area of ​​each layer through gradient way to ensure the roundness of the overall structure; Eight-eighth prepreg cut area of ​​the first prepreg layer close to the lining for: Close to the lining Eight equal parts of the prepreg cutting area for: in, is the radius of the inner hollow sphere, is the total number of prepreg layers laid, is the total thickness of the prepreg layer.

2. The method for manufacturing a spherical pressure-resistant structure for implosion protection suitable for deep-sea submersibles according to claim 1, characterized in that: The step S2 includes: firstly evenly applying epoxy resin on the lining, and then paving the prepreg.

3. The method for manufacturing a spherical pressure-resistant structure for implosion protection suitable for deep-sea submersibles according to claim 1, characterized in that: Use hydrostatic pressurization to simulate the pressure in deep-sea working environment; Assume the actual operating depth of the deep-sea submersible , then the static pressure of the water around the pressure-resistant structure under the operating water depth is for: in, is the fluid density, is the acceleration due to gravity; The experimental hydrostatic pressure reached by hydrostatic pressurization is for: This simulates the pressure in the actual deep-sea working environment.

4. The method for manufacturing a spherical pressure-resistant structure for implosion protection suitable for deep-sea submersibles according to claim 3, characterized in that: For the implosion protection spherical pressure-resistant structure suitable for deep-sea submersibles, the peak dynamic pressure captured by the pressure sensor is , the actual peak pressure reached for: in, is the experimental hydrostatic pressure achieved by hydrostatic pressurization; For the spherical structure with the same lining, the peak dynamic pressure captured by the pressure sensor is , the actual peak pressure reached for: Pressure peak reduction rate for implosion protection effect To evaluate, the calculation formula is: Pressure peak reduction rate The larger it is, the better the implosion protection.

5. A manufacturing system for a spherical pressure-resistant structure for implosion protection of a deep-sea submersible, characterized in that: The manufacturing of spherical pressure-resistant structures suitable for deep-sea submersibles’ implosion protection is achieved through compression molding, specifically including the following modules: Module M1: Prepreg cutting; Module M2: Prepreg laying; Module M3: Pre-vacuum treatment; Module M4: Polishing treatment; Module M5: Performance testing; The module M5 includes: realizing performance testing from two aspects: performance indicators of the structure itself and protection effect in a simulated deep-sea environment; the performance indicators of the structure itself include the roundness, smoothness and fit of the overall structure; The module M1 includes: Cut the prepreg and lay it in eight equal parts; lay it in multiple layers. The range is: 5≤ ≤10, increase the cutting area of ​​each layer through gradient way to ensure the roundness of the overall structure; Eight-eighth prepreg cut area of ​​the first prepreg layer close to the lining for: Close to the lining Eight equal parts of the prepreg cutting area for: in, is the radius of the inner hollow sphere, is the total number of prepreg layers laid, is the total thickness of the prepreg layer.

6. The manufacturing system of the spherical pressure-resistant structure for implosion protection of deep-sea submersibles according to claim 5, characterized in that: The module M2 includes: firstly evenly applying epoxy resin on the lining, and then laying the prepreg.

7. The manufacturing system of the spherical pressure-resistant structure for implosion protection of deep-sea submersibles according to claim 5, characterized in that: Use hydrostatic pressurization to simulate the pressure in deep-sea working environment; Assume the actual operating depth of the deep-sea submersible , then the static pressure of the water around the pressure-resistant structure under the operating water depth is for: in, is the fluid density, is the acceleration due to gravity; The experimental hydrostatic pressure reached by hydrostatic pressurization is for: This simulates the pressure in the actual deep-sea working environment.

8. The manufacturing system of the spherical pressure-resistant structure for implosion protection suitable for deep-sea submersibles according to claim 7, characterized in that: For the implosion protection spherical pressure-resistant structure suitable for deep-sea submersibles, the peak dynamic pressure captured by the pressure sensor is , the actual peak pressure reached for: in, is the experimental hydrostatic pressure achieved by hydrostatic pressurization; For the spherical structure with the same lining, the peak dynamic pressure captured by the pressure sensor is , the actual peak pressure reached for: Pressure peak reduction rate for implosion protection effect To evaluate, the calculation formula is: Pressure peak reduction rate The larger it is, the better the implosion protection.

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