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

Abstract

The invention provides a manufacturing method and system suitable for an implosion protection spherical pressure-resistant structure of a deep-sea submersible vehicle, relates to the field of deep-sea submersible vehicles, and comprises the steps that the manufacturing method of the implosion protection spherical pressure-resistant structure is achieved through a compression molding method; the invention also provides a detection method for realizing performance test from two aspects of performance indexes of the structure and a protection effect under a simulated deep sea environment. According to the manufacturing method, the problem that manufacturing requirements are difficult to meet through a traditional method is solved, manufacturing of the implosion protection pressure-resistant structure suitable for the deep-sea submersible vehicle can be achieved through the method, the requirements for roundness, smoothness, fitness and structural performance are met, the implosion protection improving effect of the pressure-resistant structure is visually verified through experimental testing, and the manufacturing method is suitable for popularization and application of the implosion protection pressure-resistant structure. And a foundation is laid for practical application to submersible vehicles. The method is of great significance to design and manufacturing of the deep sea submersible.

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 manufacturing method of a spherical pressure-resistant structure suitable for implosion protection of a deep-sea submersible. Background Art

[0002] As a technical equipment necessary for exploration, deep-sea submersibles have an important component - pressure-resistant structure, which provides protection for the safety of personnel and equipment.

[0003] To further develop deep-sea resources, advanced deep-sea submersibles are needed to complete exploration missions. However, the high-pressure working environment of the deep sea places high demands on the pressure resistance of the structure. There is also a risk of implosion due to the huge pressure difference between the deep sea and the inside and outside of the hollow spherical structure. During the implosion process, the hydrostatic pressure of the flow field is converted into fluid kinetic energy. When the airflow compresses the internal air cavity to a minimum, the internal air will rebound outward, generating a shock wave far greater than the ambient pressure, resulting in catastrophic consequences. Therefore, multiple factors need to be considered when designing and manufacturing deep-sea submersibles.

[0004] In terms of design and material selection, by combining the two materials and laying fiber prepreg outside the pressure-resistant lining, it is possible to achieve an implosion protection effect while meeting the pressure-bearing function of deep-sea submersibles. In terms of structural morphology, the spherical structure can evenly distribute the external force of water on the structure due to its perfectly symmetrical geometric shape, and is considered to be the ideal shape for the flotation device of deep-sea submersibles. Therefore, using a spherical pressure-resistant structure that combines prepreg and lining on an actual submersible is considered to be a better solution.

[0005] However, the deep-sea working environment's demand for an ideal hollow sphere is difficult to meet with conventional manufacturing solutions. In traditional processing solutions, carbon fiber winding requires a fulcrum. However, for a spherical pressure-resistant structure, 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, 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 spherical pressure-resistant structure is applied to 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 the implosion protection pressure-resistant structure suitable for deep-sea submersibles, which meets the requirements of the deep-sea working environment, the roundness, smoothness, fit and protection performance of the pressure-resistant structure, and the manufactured structure is tested as required to achieve overall performance evaluation. This scheme has important engineering reference value for the design and manufacture of deep-sea submersibles.

[0007] The existing Chinese patent application document with publication number CN117465640A discloses a lightweight composite spherical pressure-resistant structure and a deep-sea submersible for deep-sea implosion protection, including a hollow ceramic sphere liner and a CFRP outer layer, wherein the CFRP outer layer is coated on the outer surface of the hollow ceramic sphere liner, and the two cooperate to form a ceramic-CFRP composite spherical pressure-resistant structure. However, the patent only proposes the concept of a new structure, but does not provide a manufacturing method for the structure, nor does it manufacture a physical object and propose a set of test and detection methods for the structure.

[0008] The existing scheme has the following defects: during actual manufacturing, the hollow ceramic ball lining and the CFRP outer layer are not tightly fitted; the CFRP outer layer is not smooth enough due to the entanglement of the fiber bundles; the roundness of the overall structure is difficult to control. Because the application scenario of this structure is deep-sea submersibles, it has the characteristics of high environmental pressure and high risk of implosion. The existence of the above-mentioned deficiencies will have a great impact on the final performance. At the same time, after the processing and manufacturing are completed, it is necessary to propose a corresponding performance testing plan to evaluate the structural performance. However, there is no experimental test plan for the performance of this pressure-resistant structure suitable for deep-sea submersibles and the implosion protection performance.

[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 object of the present invention is to provide a method and system for manufacturing a spherical pressure-resistant structure for implosion protection of a deep-sea submersible.

[0011] According to the manufacturing method of the implosion protection spherical pressure-resistant structure suitable for deep-sea submersibles provided by the present invention, the manufacturing of the implosion protection spherical pressure-resistant structure suitable for deep-sea submersibles is realized by compression molding, specifically comprising the following steps:

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

[0013] The step S5 includes: implementing 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 roundness, smoothness and fit of the overall structure.

[0014] Preferably, the step S1 comprises:

[0015] The prepreg is cut and laid out in eight equal parts; multiple layers are laid out, and the number of layers n is in the range of 5≤n≤10. The roundness of the overall structure is ensured by increasing the cutting area S of each layer in a gradient manner;

[0016] The first prepreg layer close to the lining is divided into eight equal parts: 1 for:

[0017]

[0018] Eight-eighth prepreg cutting area S of the nth layer close to the lining n for:

[0019]

[0020] Among them, r is the radius of the liner hollow sphere, n is the total number of prepreg layers laid, and N is the total thickness of the prepreg layer.

[0021] Preferably, the step S2 comprises: 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 that the actual operating depth of the deep-sea submersible is h, then the static pressure of the water around the pressure-resistant structure under the operating depth condition is P water for:

[0024] P water = ρgh

[0025] Where ρ is the fluid density and g is the gravitational acceleration;

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

[0027] P test =P water

[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 P result1 , then the actual peak pressure P max1 for:

[0030] P max1 =P test +P result1

[0031] Among them, P test 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 P result2 , then the actual peak pressure P max2for:

[0033] P max2 =P test +P result2

[0034] The implosion protection effect is evaluated by the pressure peak reduction rate a, and the calculation formula is:

[0035]

[0036] The greater the pressure peak reduction rate a is, the better the implosion protection effect is.

[0037] The manufacturing system of the spherical pressure-resistant structure for implosion protection applicable to deep-sea submersibles provided by the present invention realizes the manufacturing of the spherical pressure-resistant structure for implosion protection applicable to deep-sea submersibles by means of 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 test;

[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 comprises:

[0041] The prepreg is cut and laid in eight equal parts; 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 increasing the cutting area S of each layer in a gradient manner;

[0042] The first prepreg layer close to the lining is divided into eight equal parts: 1 for:

[0043]

[0044] Eight-eighth prepreg cutting area S of the nth layer close to the lining n for:

[0045]

[0046] Among them, r is the radius of the liner hollow sphere, n is the total number of prepreg layers laid, and N is the total thickness of the prepreg layer.

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

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

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

[0050] P water = ρgh

[0051] Where ρ is the fluid density and g is the gravitational acceleration;

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

[0053] P test =P water

[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 P result1 , then the actual peak pressure P max1 for:

[0056] P max1 =P test +P result1

[0057] Among them, P test 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 P result2 , then the actual peak pressure P max2 for:

[0059] P max2 =P test +P result2

[0060] The implosion protection effect is evaluated by the pressure peak reduction rate a, and the calculation formula is:

[0061]

[0062] The greater the pressure peak reduction rate a is, the better the implosion protection effect is.

[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. The manufacturing method of the spherical pressure-resistant structure for implosion protection suitable for deep-sea submersibles is realized by a molding method, and the detection method is realized by two aspects: the performance index of the structure itself and the protection effect in a simulated deep-sea environment. The problem that the traditional method is difficult to meet the manufacturing requirements is overcome, and the improvement effect of the implosion protection of the pressure-resistant structure is intuitively verified through testing, laying a foundation for its practical application to submersibles.

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

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

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

[0068] Figure 2 A schematic diagram of a method for cutting a prepreg into eight equal parts in the invention;

[0069] Figure 3 It is a schematic diagram of the combination of the inner lining and 5 layers of prepreg in the invention;

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

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

[0072] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments 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 of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0073] Example 1

[0074] The present invention provides a method for manufacturing a spherical pressure-resistant structure for implosion protection suitable for deep-sea submersibles, aiming to solve the problem that traditional methods are difficult to meet the manufacturing requirements of spherical pressure-resistant structures for implosion protection suitable for deep-sea submersibles, and the problem of 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 means of compression molding, 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 according to the actual operating water depth. When a deep-sea submersible is operating, the operating water depth h of the deep-sea submersible needs to be given; this embodiment takes the Mariana Trench, the deepest sea known so far, as the actual working condition, and the operating water depth is 11,000 m.

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

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

[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 liner hollow ball is 92 mm, the total number of prepreg layers is 5, and the total thickness N of the prepreg layer is 1.5 mm. Figure 3 shown.

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

[0080] "1 layer" eight-divided prepreg cutting area S 1 for:

[0081]

[0082] The area S of the prepreg cut into eight equal parts for "2 layers" 2 for:

[0083]

[0084] The area S of the prepreg cut into eight equal parts for "3 layers" 3 for:

[0085]

[0086] The “4-layer” prepreg cutting area S is divided into eight equal parts 4 for:

[0087]

[0088] The “5-layer” prepreg cutting area S is divided into eight equal parts 5 for:

[0089]

[0090] Step S2: Before laying the layers, evenly apply epoxy resin on the lining, and then lay the prepreg, so as to ensure 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, and this process is repeated to finally achieve multi-layer processing.

[0092] Step S4: After the multi-layer processing is completed, polishing is performed to meet the surface smoothness requirements of the spherical pressure-resistant structure for implosion protection of deep-sea submersibles.

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

[0094] The detection method of the implosion protection spherical pressure-resistant structure suitable for 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 index of the structure of the detection method is the roundness, smoothness and fit of the overall structure. The size of the overall structure is calibrated and measured by a vernier caliper, and it is found that the overall roundness, fit and smoothness are 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, then the static pressure P of the water around the pressure-resistant structure under the operating water depth condition water for:

[0098] P water =ρgh=15MPa (6)

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

[0100] P test =P water =15MPa (7)

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

[0102] The structure was tested for pressure resistance by hydrostatic pressure up to 15 MPa and found to remain stable. Next, a comparative experiment with a spherical structure with the same lining was conducted to evaluate the protection performance. The peak dynamic pressure captured by the pressure sensor is P result .

[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 P result1 For the spherical structure with the same lining, the peak dynamic pressure captured by the pressure sensor is P result2 The schematic diagram of the relationship between pressure and time is shown in the following figure: Figure 5 .

[0104] The implosion protection effect can be evaluated by the pressure peak reduction rate a, which is substituted into the calculation formula:

[0105]

[0106] The pressure peak reduction rate a reached 80%, proving that the implosion protection effect was 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 of the implosion-protected spherical pressure-resistant structure provided by the present invention improves the manufacturing and testing schemes commonly used in current engineering projects, and the following conclusions can also be obtained: through five steps of S1 prepreg cutting; S2 prepreg paving; S3 pre-vacuum treatment; S4 polishing treatment; S5 performance test, the problem that the roundness, smoothness and fit in the traditional manufacturing scheme are difficult to meet the requirements is solved. The processed embodiment has outstanding performance in its own structural performance and implosion protection performance. Obviously, the present invention provides a new solution for the manufacture of deep-sea pressure-resistant structures, which is of great significance to the design, manufacture and detection of deep-sea submersibles and 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 the manufacturing scheme commonly used in current engineering, realizes the manufacturing method of the implosion protection spherical pressure-resistant structure suitable for deep-sea submersibles by the method of compression molding, and realizes the detection method of performance testing from two aspects of the performance index of the structure itself and the protection effect in the simulated deep-sea environment, which overcomes the problem that the traditional method is difficult to achieve the manufacturing requirements. It can be seen from the experimental test that this embodiment can successfully manufacture the physical structure according to the manufacturing scheme, and pass the test of the detection method. The structure manufactured by this embodiment improves the pressure peak reduction rate on the basis of meeting the requirements of roundness, smoothness and fit, and has a good implosion protection effect. The method adopted in this embodiment is concise, the protection effect is significant, and multiple functions such as feasibility and safety are achieved.

[0109] Example 2

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

[0111] According to the manufacturing system of the implosion protection spherical pressure-resistant structure suitable for deep-sea submersibles provided by the present invention, the manufacturing of the implosion protection spherical pressure-resistant structure suitable for deep-sea submersibles is realized by 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 test;

[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 comprises:

[0115] The prepreg is cut and laid in eight equal parts; 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 increasing the cutting area S of each layer in a gradient manner;

[0116] The first prepreg layer close to the lining is divided into eight equal parts: 1 for:

[0117]

[0118] Eight-eighth prepreg cutting area S of the nth layer close to the lining n for:

[0119]

[0120] Among them, r is the radius of the liner hollow sphere, n is the total number of prepreg layers laid, and N is the total thickness of the prepreg layer.

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

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

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

[0124] P water = ρgh

[0125] Where ρ is the fluid density and g is the gravitational acceleration;

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

[0127] P test =P water

[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 P result1 , then the actual peak pressure P max1 for:

[0130] P max1 =P test +P result1

[0131] Among them, P test 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 P result2 , then the actual peak pressure P max2 for:

[0133] P max2 =P test +P result2

[0134] The implosion protection effect is evaluated by the pressure peak reduction rate a, and the calculation formula is:

[0135]

[0136] The greater the pressure peak reduction rate a is, the better the implosion protection effect is.

[0137] Those skilled in the art know that, in addition to implementing the system, device and its various modules provided by the present invention in a 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 and embedded microcontrollers by logically programming the method steps. Therefore, the system, device and its various modules provided by the present invention can be considered as a hardware component, and the modules included therein for implementing various programs can also be considered as structures within the hardware component; the modules for implementing various functions can also be considered as both software programs for implementing the method and structures within the hardware component.

[0138] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A method for manufacturing a spherical pressure-resistant structure suitable for implosion protection of a deep-sea submersible, characterized in that: The manufacturing of a spherical pressure-resistant structure suitable for implosion protection of a deep-sea submersible is achieved by compression molding, specifically comprising the following steps: Step S1: prepreg cutting; Step S2: prepreg laying; Step S3: pre-vacuum treatment; Step S4: polishing treatment; Step S5: performance test; The step S5 includes: implementing 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 roundness, smoothness and fit of the overall structure.

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 S1 comprises: The prepreg is cut and laid in eight equal parts; 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 increasing the cutting area S of each layer in a gradient manner; The cutting area S1 of the first prepreg layer close to the lining is divided into eight equal parts: Eight-eighth prepreg cutting area S of the nth layer close to the lining n for: Among them, r is the radius of the liner hollow sphere, n is the total number of prepreg layers laid, and N is the total thickness of the prepreg layer.

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: The step S2 comprises: firstly evenly applying epoxy resin on the lining, and then paving the prepreg.

4. 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 that the actual operating depth of the deep-sea submersible is h, then the static pressure of the water around the pressure-resistant structure under the operating depth condition is P water for: P water =ρgh Where ρ is the fluid density and g is the gravitational acceleration; The experimental hydrostatic pressure P reached by hydrostatic pressurization is test for: P test =P water This simulates the pressure in the actual deep-sea working environment.

5. The method for manufacturing a spherical pressure-resistant structure for implosion protection suitable for deep-sea submersibles according to claim 4, 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 P result1 , then the actual peak pressure P max1 for: P max1 =P test +P result1 Among them, P test 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 P result2 , then the actual peak pressure P max2 for: P max2 =P test +P result2 The implosion protection effect is evaluated by the pressure peak reduction rate a, and the calculation formula is: The greater the pressure peak reduction rate a is, the better the implosion protection effect is.

6. A manufacturing system for a spherical pressure-resistant structure for implosion protection of a deep-sea submersible, characterized in that: The manufacturing of the implosion protection spherical pressure-resistant structure suitable for deep-sea submersibles is realized by compression molding, which specifically includes the following modules: Module M1: prepreg cutting; Module M2: prepreg laying; Module M3: pre-vacuum treatment; Module M4: polishing treatment; Module M5: performance test; 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.

7. The manufacturing system of the spherical pressure-resistant structure for implosion protection suitable for deep-sea submersibles according to claim 6, characterized in that: The module M1 comprises: The prepreg is cut and laid in eight equal parts; 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 increasing the cutting area S of each layer in a gradient manner; The cutting area S1 of the first prepreg layer close to the lining is divided into eight equal parts: Eight-eighth prepreg cutting area S of the nth layer close to the lining n for: Among them, r is the radius of the liner hollow sphere, n is the total number of prepreg layers laid, and N is the total thickness of the prepreg layer.

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

9. The manufacturing system of the spherical pressure-resistant structure for implosion protection suitable for deep-sea submersibles according to claim 6, characterized in that: Use hydrostatic pressurization to simulate the pressure in deep-sea working environment; Assume that the actual operating depth of the deep-sea submersible is h, then the static pressure of the water around the pressure-resistant structure under the operating depth condition is P water for: P water =ρgh Where ρ is the fluid density and g is the gravitational acceleration; The experimental hydrostatic pressure P reached by hydrostatic pressurization is test for: P test =P water This simulates the pressure in the actual deep-sea working environment.

10. The manufacturing system of the spherical pressure-resistant structure for implosion protection suitable for deep-sea submersibles according to claim 9, 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 P result1 , then the actual peak pressure P max1 for: P max1 =P test +P result1 Among them, P test 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 P result2 , then the actual peak pressure P max2 for: P max2 =P test +P result2 The implosion protection effect is evaluated by the pressure peak reduction rate a, and the calculation formula is: The greater the pressure peak reduction rate a is, the better the implosion protection effect is.

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